InspectAPedia® FREE Encyclopedia of Building & Environmental Construction, Diagnosis, Maintenance & Repair |
Question? Just ask us! InspectAPedia
|
Use of Ozone for Drinking Water Disinfection
- POST a QUESTION or COMMENT about the limitations of reliance only on disinfection to make drinking water potable or safe.
Ozone water treatment for disinfection or purification:
This article describes the use of ozone or ozonization to remove contaminants from drinking water or from septic effluent discharge. We include recent research citing interesting findings including the apparent ability of ozone treatment of water to remove trace levels of pesticides, endocrine disruptors & other chemicals.
InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.
- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?
Is Ozone for Drinking Water Disinfection an Effective Method?
William Glaze (1987) discussed the combination of use of ozone with other methods for water disinfection and in a separate article (Glaze 1987) also reviewed the chemistry of drinking water treatment or wastewater treatment using ozone as well as hydrogen peroxide and UV light, comparing these systems. The authors summarized the history of use of ozone for water treatment:
Ozone came into use as a drinking-water disinfectant as early as 1906 at the Bon Voyage plant in Nice, France; since then more than 1000 facilities throughout Europe have adopted the practice. Some use ozone as the primary or sole disinfectant; others use it as an oxidant for the contrl of flora, odor, and color and to reuce the manganese and iron content of drinking water. Lately [1986] engineers at European water plants are finding that preozonation enhances the flocculation of suspended particles in surface waters, and its use for this purpose is expanding.
[By1986] ... the use of ozone in North America, however, [had] only recently begun to gain acceptance. According to Rice, the number of ozonation plants in the United States [had] increased from five in 1977 to 20 in 1984. During the same period, the number of plants in Canada increased from 23 to nearly 50. - Glaze (1987)
By 1998, ten years later ozone water treatment was widely discussed, and we find Camel reviewing additional treatment steps that can be required:
... In fact, oxidants may be added at several points throughout the treatment: pre-oxidation, intermediate oxidation or final disinfection. So, the numerous effects of chemical oxidation are discussed along the water treatment: removal of inorganic species, aid to the coagulation-floculation process, degradation of organic matter and disinfection.
Of prime importance in potable water production is the removal of organic matter (natural humic substances, as well as micropollutants, especially pesticides) to avoid degradation of the distributed water (mainly bad odors and tastes; formation of disinfection by-products such as trihalomethanes; microbial regrowth in the distribution system).
... As a matter of fact, complete mineralization hardly occurs during the process; as a consequence, further treatment (i.e. sand or granular activated carbon filtration) is required to improve the distributed water quality, and to meet the drinking water regulations.
In noting the effectiveness of ozone for drinking water purification, Lazarova (1999) pointed out that there was considerable variation in the effectiveness of the more traditional use of chlorination as a water disinfectant depending on the beginning water quality:
Chlorination/dechlorination and advanced disinfection processes (UV irradiation, ozonation, membrane filtration) have been reviewed in terms of their efficiency, regrowth potential, design parameters, experimental set-up, scale-up and industrial experiences. Existing results show the great influence of water quality, in particular of suspended matter concentration and organic content.
... The critical analysis of the literature data and experimental results highlights UV irradiation as an effective and competitive advanced disinfection process.
Ozonation is a viable solution in case of higher requirements for water quality including virus and protozoa removal.
Ultrafiltration is a highly efficient process producing an excellent quality and totally disinfected effluent, particularly recommended for groundwater recharge and potable wastewater reuse.
The choice between these advanced disinfection technologies depends on wastewater quality, existing standards, specific reuse applications and wastewater treatment work capacity. - Lazarova (1999)
Kasprzyk-Hordern (2003) explained catalytic ozonation as a "new means of contaminants removal" in the laboratory with implications for more general water treatment:
This paper presents a review of catalytic ozonation and methods of enhancing molecular ozone reactions in water treatment. It is also an attempt to propose general ideas about mechanisms governing catalytic ozone reactions.
Catalytic ozonation is a new means of contaminants removal from drinking water and wastewater. Its application is mainly limited to laboratory use. However, due to successful results further investigation is to be carried out. The majority of models proposed represent more of a speculative approach to the problem than a hypothesis based on experimental data.
It is therefore useful to provide a summary of the accomplishments concerning catalytic ozonation and methods of enhancing molecular ozone reactions that were published so far. A survey of the application of several homo- and heterogeneous catalysts, their activity and the parameters influencing the efficiency of catalytic systems is presented here as a short overview, the aim of which is to raise awareness of possible new approaches to water purification. - Kasprzyk-Hordern (2003)
Ozone Treatment of Drinking Water to Remove Trace Levels of Chemical Contaminants
An important difference between ozone treatment of drinking water and possibly wastewater and the use of chlorination in those applications is the possibility that the oxidizing effects of ozone in water may improve the removal of chemical contaminants, not just biological ones.
Robeck (1967) discussed the removal of pesticides from water using ozone treatments, and more recently, Broséus (2009) explains efforts to remove trace levels of pharmaceuticals and other chemicals from water:
This study investigates the oxidation of pharmaceuticals, endocrine disrupting compounds and pesticides during ozonation applied in drinking water treatment. In the first step, second-order rate constants for the reactions of selected compounds with molecular ozone (kO3)(kO3) were determined in bench-scale experiments at pH 8.10: caffeine (650 ± 22 M−1 s−1), progesterone (601 ± 9 M−1 s−1), medroxyprogesterone (558 ± 9 M−1 s−1), norethindrone (2215 ± 76 M−1 s−1) and levonorgestrel (1427 ± 62 M−1 s−1).
Compared to phenolic estrogens (estrone, 17β-estradiol, estriol and 17α-ethinylestradiol), the selected progestogen endocrine disruptors reacted far slower with ozone.
In the second part of the study, bench-scale experiments were conducted with surface waters spiked with 16 target compounds to assess their oxidative removal using ozone and determine if bench-scale results would accurately predict full-scale removal data.
Overall, the data provided evidence that ozone is effective for removing trace organic contaminants from water with ozone doses typically applied in drinking water treatment.
Ozonation removed over 80% of caffeine, pharmaceuticals and endocrine disruptors within the CT value of about 2 mg min L−1. As expected, pesticides were found to be the most recalcitrant compounds to oxidize. Caffeine can be used as an indicator compound to gauge the efficacy of ozone treatment.
WELL DISINFECTANT pH ADJUSTMENT may also be necessary for effective water disinfection.
Ozone Water Treatment Effectiveness Research
- Also see citations atReferences or Citations
- Camel, Vand, and A. Bermond. "The use of ozone and associated oxidation processes in drinking water treatment." Water Research 32, no. 11 (1998): 3208-3222.
- Glaze, William H. "Drinking-water treatment with ozone." Environmental science & technology 21, no. 3 (1987): 224-230.
- Kim, B. R., J. E. Anderson, S. A. Mueller, W. A. Gaines, and A. M. Kendall. "Literature review—efficacy of various disinfectants against< i> Legionella</i> in water systems." Water Research 36, no. 18 (2002): 4433-4444.
- Reynolds, Kelly A., Kristina D. Mena, and Charles P. Gerba. "Risk of waterborne illness via drinking water in the United States." Reviews of environmental contamination and toxicology. Springer New York, 2008. 117-158.
- Rice, Rip G., C. Michael Robson, G. Wade Miller, and Archibald G. Hill. "Uses of ozone in drinking water treatment." Journal (American Water Works Association) (1981): 44-57.
- Richardson, S. D., A. D. Thruston Jr, T. V. Caughran, P. H. Chen, T. W. Collette, K. M. Schenck, B. W. Lykins Jr, Ch Rav-Acha, and V. Glezer. "Identification of new drinking water disinfection by-products from ozone, chlorine dioxide, chloramine, and chlorine." In Environmental Challenges, pp. 95-102. Springer Netherlands, 2000.
...
Continue reading at REVERSE OSMOSIS WATER TREATMENT or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.
Or see these
Recommended Articles
Suggested citation for this web page
OZONE for WATER DISINFECTION at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.
Or see this
INDEX to RELATED ARTICLES: ARTICLE INDEX to WATER TREATMENT SYSTEMS
Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia
Ask a Question or Search InspectApedia
Try the search box just below, or if you prefer, post a question or comment in the Comments box below and we will respond promptly.
Search the InspectApedia website
Note: appearance of your Comment below may be delayed: if your comment contains an image, photograph, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. Apologies for the delay.
Only one image can be added per comment but you can post as many comments, and therefore images, as you like.
You will not receive a notification when a response to your question has been posted.
Please bookmark this page to make it easy for you to check back for our response.
Our Comment Box is provided by Countable Web Productions countable.ca
Citations & References
In addition to any citations in the article above, a full list is available on request.
- Am Water Works Res, F., Bruno Langlais, David A. Reckhow, and Deborah R. Brink. Ozone in water treatment: application and engineering. CRC press, 1991.
- Andreozzi, Roberto, Vincenzo Caprio, Amedeo Insola, and Raffaele Marotta. "Advanced oxidation processes (AOP) for water purification and recovery." Catalysis today 53, no. 1 (1999): 51-59.
Abstract
All advanced oxidation processes (AOP) are characterised by a common chemical feature: the capability of exploiting the high reactivity of HO radicals in driving oxidation processes which are suitable for achieving the complete abatement and through mineralization of even less reactive pollutants. The different AOP are considered and critically presented according to their specific features with reference, whenever possible, to their real applications for water pollution abatement. The experimental apparatus and working procedures which can be adopted for carrying out waste water treatments by AOP application are examined. Some remarks upon treatment economics are provided on the basis of the main parameters affecting the AOP costs. - Andrzejewski, Przemysław, Barbara Kasprzyk-Hordern, and Jacek Nawrocki. "The hazard of N-nitrosodimethylamine (NDMA) formation during water disinfection with strong oxidants." Desalination 176, no. 1 (2005): 37-45.
- Arnold, Benjamin F., and John M. Colford Jr. "Treating water with chlorine at point-of-use to improve water quality and reduce child diarrhea in developing countries: a systematic review and meta-analysis." American journal of tropical medicine and hygiene 76, no. 2 (2007): 354-364.
- Broséus, R., S. Vincent, K. Aboulfadl, A. Daneshvar, S. Sauvé, B. Barbeau, and M. Prévost. "Ozone oxidation of pharmaceuticals, endocrine disruptors and pesticides during drinking water treatment." Water research 43, no. 18 (2009): 4707-4717.
Abstract:
This study investigates the oxidation of pharmaceuticals, endocrine disrupting compounds and pesticides during ozonation applied in drinking water treatment. In the first step, second-order rate constants for the reactions of selected compounds with molecular ozone (kO3)(kO3) were determined in bench-scale experiments at pH 8.10: caffeine (650 ± 22 M−1 s−1), progesterone (601 ± 9 M−1 s−1), medroxyprogesterone (558 ± 9 M−1 s−1), norethindrone (2215 ± 76 M−1 s−1) and levonorgestrel (1427 ± 62 M−1 s−1). Compared to phenolic estrogens (estrone, 17β-estradiol, estriol and 17α-ethinylestradiol), the selected progestogen endocrine disruptors reacted far slower with ozone. In the second part of the study, bench-scale experiments were conducted with surface waters spiked with 16 target compounds to assess their oxidative removal using ozone and determine if bench-scale results would accurately predict full-scale removal data. Overall, the data provided evidence that ozone is effective for removing trace organic contaminants from water with ozone doses typically applied in drinking water treatment. Ozonation removed over 80% of caffeine, pharmaceuticals and endocrine disruptors within the CT value of about 2 mg min L−1. As expected, pesticides were found to be the most recalcitrant compounds to oxidize. Caffeine can be used as an indicator compound to gauge the efficacy of ozone treatment. - Camel, Vand, and A. Bermond. "The use of ozone and associated oxidation processes in drinking water treatment." Water Research 32, no. 11 (1998): 3208-3222. Abstract:
his paper summarizes the main applications of ozonation and associated oxidation processes in the treatment of natural waters (surface and ground waters) for drinking water production. In fact, oxidants may be added at several points throughout the treatment: pre-oxidation, intermediate oxidation or final disinfection. So, the numerous effects of chemical oxidation are discussed along the water treatment: removal of inorganic species, aid to the coagulation-floculation process, degradation of organic matter and disinfection. Of prime importance in potable water production is the removal of organic matter (natural humic substances, as well as micropollutants, especially pesticides) to avoid degradation of the distributed water (mainly bad odors and tastes; formation of disinfection by-products such as trihalomethanes; microbial regrowth in the distribution system). Consequently, this point has been particularly detailed in this paper. As a matter of fact, complete mineralization hardly occurs during the process; as a consequence, further treatment (i.e. sand or granular activated carbon filtration) is required to improve the distributed water quality, and to meet the drinking water regulations. - Glaze, William H. "Drinking-water treatment with ozone." Environmental science & technology 21, no. 3 (1987): 224-230.
- Glaze, William H., Joon-Wun Kang, and Douglas H. Chapin. "The chemistry of water treatment processes involving ozone, hydrogen peroxide and ultraviolet radiation." (1987): 335-352.
Abstract:
Advanced oxidation processes are defined as those which involve the generation of hydroxyl radicals in sufficient quantity to affect water purification. The theoretical and (practical yield of OH from O3 at high pH, 03/H202, O3/UV and H202/UV systems is reviewed. New data is presented which illustrates the importance of direct photolysis in the O3/UV process, the effect of the H202:03 ratio in the O3/H202 process, and the impact of the low extinction coefficient of H202 in the H202/UV process. - Johnson, Clayton J., and Philip C. Singer. "Impact of a magnetic ion exchange resin on ozone demand and bromate formation during drinking water treatment." Water Research 38, no. 17 (2004): 3738-3750.
- Jyoti, K. K., and A. B. Pandit. "Ozone and cavitation for water disinfection." Biochemical Engineering Journal 18, no. 1 (2004): 9-19.
- Kasprzyk-Hordern, Barbara, Maria Ziółek, and Jacek Nawrocki. "Catalytic ozonation and methods of enhancing molecular ozone reactions in water treatment." Applied Catalysis B: Environmental 46, no. 4 (2003): 639-669.
Abstract:
This paper presents a review of catalytic ozonation and methods of enhancing molecular ozone reactions in water treatment. It is also an attempt to propose general ideas about mechanisms governing catalytic ozone reactions. Catalytic ozonation is a new means of contaminants removal from drinking water and wastewater. Its application is mainly limited to laboratory use. However, due to successful results further investigation is to be carried out. The majority of models proposed represent more of a speculative approach to the problem than a hypothesis based on experimental data. It is therefore useful to provide a summary of the accomplishments concerning catalytic ozonation and methods of enhancing molecular ozone reactions that were published so far. A survey of the application of several homo- and heterogeneous catalysts, their activity and the parameters influencing the efficiency of catalytic systems is presented here as a short overview, the aim of which is to raise awareness of possible new approaches to water purification. - Lazarova, V., Ph Savoye, M. L. Janex, E. R. Blatchley III, and M. Pommepuy. "Advanced wastewater disinfection technologies: state of the art and perspectives." Water Science and Technology 40, no. 4 (1999): 203-213.
- Langlais, Bruno Langlais, David A. Reckhow, and Deborah R. Brink. Ozone in water treatment: application and engineering. CRC press, 1991. Am Water Works Res, F.,
- Peeters, JOHAN E., E. Ares Mazas, Willy J. Masschelein, I. Villacorta Martiez de Maturana, and Emile Debacker. "Effect of disinfection of drinking water with ozone or chlorine dioxide on survival of Cryptosporidium parvum oocysts." Applied and environmental microbiology 55, no. 6 (1989): 1519-1522. Abstract:
Demineralized water was seeded with controlled numbers of oocysts of Cryptosporidium parvum purified from fresh calf feces and subjected to different treatments with ozone or chlorine dioxide. The disinfectants were neutralized by sodium thiosulfate, and neonatal mice were inoculated intragastrically and sacrificed 7 days later for enumeration of oocyst production. Preliminary trials indicated that a minimum infection level of 1,000 oocysts (0.1-ml inoculum) per mouse was necessary to induce 100% infection. Treatment of water containing 10(4) oocysts per ml with 1.11 mg of ozone per liter (concentration at time zero [C0]) for 6 min totally eliminated the infectivity of the oocysts for neonatal mice. A level of 2.27 mg of ozone per liter (C0) was necessary to inactivate water containing 5 x 10(5) oocysts per ml within 8 min. Also, 0.4 mg of chlorine dioxide per liter (C0) significantly reduced infectivity within 15 min of contact, although some oocysts remained viable. - Richardson, S. D., A. D. Thruston Jr, T. V. Caughran, P. H. Chen, T. W. Collette, K. M. Schenck, B. W. Lykins Jr, Ch Rav-Acha, and V. Glezer. "Identification of new drinking water disinfection by-products from ozone, chlorine dioxide, chloramine, and chlorine." In Environmental Challenges, pp. 95-102. Springer Netherlands, 2000.
- Robeck, Gordon G., Kenneth A. Dostal, Jesse M. Cohen, and James F. Kreissl. "Effectiveness of Water Treatment Processes in Pesticide Removal (PDF)." Journal-American Water Works Association 57, no. 2 (1965): 181-199.
Abstract:
This article discusses the effectiveness of water treatment processes in coping with relatively small concentrations of pesticides in raw water. Duplicate pilot water treatment plants at the Taft Center were used to evaluate the effectiveness of conventional and auxiliary treatment processes. The methods and procedures used included: the chromatographic method; solubility and incidental loss; coagulation and filtration; chlorine; potassium permanganate; ozone; powdered activated carbon; and, granular activated carbon. - Schoenen, D. "Role of disinfection in suppressing the spread of pathogens with drinking water: possibilities and limitations." Water research 36, no. 15 (2002): 3874-3888.
- Scott, Jon P., and David F. Ollis. "Integration of chemical and biological oxidation processes for water treatment: review and recommendations." Environmental Progress 14, no. 2 (1995): 88-103.
- Shin, Gwy-Am, and Mark D. Sobsey. "Inactivation of norovirus by chlorine disinfection of water." Water research 42, no. 17 (2008): 4562-4568.
- Sobsey, Mark D., Sanitation Water, and World Health Organization. "Managing water in the home: accelerated health gains from improved water supply/prepared by Mark D. Sobsey." (2002).
- Xu, Xiaoming, Philip S. Stewart, and Xiao Chen. "Transport limitation of chlorine disinfection of Pseudomonas aeruginosa entrapped in alginate beads." Biotechnology and bioengineering 49, no. 1 (1996): 93-100.
- Peter Andrey Smith, "A Quest for Even Safer Drinking Water", The New York Times, 27 August 2013, p. D3
- Dr. Omar Amin, of the Tempe AZ Parasitology Center, corresponded with one of our readers asking about peroxide: "You can use hydrogen peroxide if you want to but we do not have a track record of percentage dilution". Dr. Amin has done research for the US military and for the CDC.
- Potable Aqua® emergency drinking water germicidal tablets are produced by the Wisconsin Pharmacal Co., Jackson WI 53037. 800-558-6614 pharmacalway.com
- Wilderness Medical Society has advice about boiling water for consumption
- Princeton University - www.princeton.edu
- "Bacteria in Drinking Water" - "Chlorine," Karen Mancl, water quality specialist, Agricultural Engineering, Ohio State University Extension. Mancl explains factors affecting the effectiveness of chlorine in water as a means to destroy bacteria and other microorganisms. OSU reports as follows:
Chlorine kills bacteria, including disease-causing organisms and the nuisance organism, iron bacteria. However, low levels of chlorine, normally used to disinfect water, are not an effective treatment for giardia cysts. A chlorine level of over 10 mg/1 must be maintained for at least 30 minutes to kill giardia cysts. -- http://ohioline.osu.edu/b795/index.html is the front page of this bulletin.
- Crystal Clear Supply provides portable ceramic water filter purifiers and portable reverse osmosis water treatment equipment - see http://www.crystalclearsupply.com/category_s/7.htm
- "Do Iodine Water Purification Tablets Provide an Effective Barrier against Cryptosporidium parvum?", Starke, Jeffrey A., Bowman, Dwight D., Labare, Michael, Fogarty, Elizabeth A., and others, Military Medicine, 25 October 2001 [possibly a later version of this article appeared in 2005 -DF] http://www.amsus.org/military medicine/milmed.htm
- "Drinking Water Safety in Emergencies", University of Minnesota extension, extension.umn.edu/info-u/nutrition/BJ646.html
- FDA Warning about drinking hydrogen peroxide: www.truthorfiction.com/rumors/h/hydrogen-peroxide.htm This article cites a 2003 entry in Journal of Food and Science on using Hy.Perox to sterilize vegetables, referring to E.coli - NOT to Giardia.
- www.epa.gov/ogwdw/mdbp/pdf/alter/chapt_2.pdf provides an article on use of disinfectants for water treatment
- This patent application for UV light sterilization www.patentstorm.us/patents/6565803.html Lists good references on water purification for Giardia et als
- Giardia exposure limits for drinking water: see www.mass.gov/dep/water/drinking/standards/giardia.htm is the current regulatory exposure limit (your minimum target for sterilization)
- U.S. Army Field Manual 21-10, Field Hygiene and Sanitation, 1988, web search 07/02/2010, original source: http://www.enlisted.info/field-manuals/fm-21-10-field-hygiene-and-sanitation.shtml
The purpose of this manual is to assist individual soldiers, unit commanders, leaders and field sanitation teams in preventing disease and environmental injuries. The manual provides information on preventive medicine measures (PMM) to the individual soldier as well as essential information for the unit commander, unit leaders, and the unit field sanitation team on applying unit level PMM. - Wikipedia on history of use of hydrogen peroxide: Information on Hydrogen peroxide as a sterilant is in Wikipedia at en.wikipedia.org/wiki/Sterilization_(microbiology) HO2 has been used for a long time, including by vaporization for sterilizing freeze dryers.
- Potable Aqua® emergency drinking water germicidal tablets are produced by the Wisconsin Pharmacal Co., Jackson WI 53037. 800-558-6614 pharmacalway.com
- Principles and Practice of Disinfection, Preservation and Sterilization (Hardcover)
by A. D. Russell (Editor), W. B. Hugo (Editor), G. A. J. Ayliffe (Editor), Blackwell Science, 2004. ISBN-10: 1405101997, ISBN-13: 978-1405101998.
"This superb book is the best of its kind available and one that will undoubtedly be useful, if not essential, to workers in a variety of industries. Thirty-one distinguished specialists deal comprehensively with the subject matter indicated by the title ... The book is produced with care, is very readable with useful selected references at the end of each chapter and an excellent index. It is an essential source book for everyone interested in this field. For pharmacy undergraduates, it will complement the excellent text on pharmaceutical microbiology by two of the present editors."
The Pharmaceutical Journal: "This is an excellent book. It deals comprehensively and authoritatively with its subject with contributions from 31 distinguished specialists. There is a great deal to interest all those involved in hospital infection ... This book is exceptionally well laid out. There are well chosen references for each chapter and an excellent index. It is highly recommended." The Journal of Hospital Infection.: "The editors and authors must be congratulated for this excellent treatise on nonantibiotic antimicrobial measures in hospitals and industry ... The publication is highly recommended to hospital and research personnel, especially to clinical microbiologists, infection-control and environmental-safety specialists, pharmacists, and dieticians."
New England Journal of Medicine: City Hospital, Birmingham, UK. Covers the many methods of the elimination or prevention of microbial growth. Provides an historical overview, descriptions of the types of antimicrobial agents, factors affecting efficacy, evaluation methods, and types of resistance. Features sterilization methods, and more. Previous edition: c1999. DNLM: Sterilization--methods. - Handbook of Disinfectants and Antiseptics, Joseph M. Ascenzi (Editor), CRC, 1995, ISBN-10: 0824795245 ISBN-13: 978-0824795245 "The evaluation of chemical germicides predates the golden age of microbiology..." -
This well-focused, up-to-date reference details the current medical uses of antiseptics and disinfectants -- particularly in the control of hospital-acquired infections -- presenting methods for evaluating products to obtain regulatory approval and examining chemical, physical, and microbiological properties as well as the toxicology of the most widely used commercial chemicals. - When Technology Fails, Matthew Stein, Chelsea Green Publisher, 2008,493 pages. ISBN-10: 1933392452 ISBN-13: 978-1933392455, "... how to find and sterilize water in the face of utility failure, as well as practical information for dealing with water-quality issues even when the public tap water is still flowing". Mr. Stein's website is www.whentechfails.com/
- "Bacteria in Drinking Water" - "Chlorine," Karen Mancl, water quality specialist, Agricultural Engineering, Ohio State University Extension. Mancl explains factors affecting the effectiveness of chlorine in water as a means to destroy bacteria and other microorganisms. OSU reports as follows:
Chlorine kills bacteria, including disease-causing organisms and the nuisance organism, iron bacteria. However, low levels of chlorine, normally used to disinfect water, are not an effective treatment for giardia cysts. A chlorine level of over 10 mg/1 must be maintained for at least 30 minutes to kill giardia cysts. -- http://ohioline.osu.edu/b795/index.html is the front page of this bulletin.
- CHLORINE IN DRINKING WATER - Does Chlorine in Drinking Water Harm the Septic Tank? - Septic Tank Cleaning Advice
- Ohio State University article on the concentration of chlorine necessary to act as an effective disinfectant, and the effects of the water's pH and temperature: See http://ohioline.osu.edu/b795/b795_7.html for details.
- Extreme Lead Poisoning Symptoms Suggested by Feb 2006 NY Times Article on Kosovo Roma Camps
- WELL CHLORINATION & SHOCKING - Procedure for Shocking a Well to (temporarily or maybe longer) "Correct" Bacterial Contamination
- Crystal Clear Supply provides portable ceramic water filter purifiers and portable reverse osmosis water treatment equipment - see http://www.crystalclearsupply.com/category_s/7.htm
- Handbook of Disinfectants and Antiseptics, Joseph M. Ascenzi (Editor), CRC, 1995, ISBN-10: 0824795245 ISBN-13: 978-0824795245 "The evaluation of chemical germicides predates the golden age of microbiology..." -
This well-focused, up-to-date reference details the current medical uses of antiseptics and disinfectants -- particularly in the control of hospital-acquired infections -- presenting methods for evaluating products to obtain regulatory approval and examining chemical, physical, and microbiological properties as well as the toxicology of the most widely used commercial chemicals. - Potable Aqua® emergency drinking water germicidal tablets are produced by the Wisconsin Pharmacal Co., Jackson WI 53037. 800-558-6614 pharmacalway.com
- Principles and Practice of Disinfection, Preservation and Sterilization (Hardcover)
by A. D. Russell (Editor), W. B. Hugo (Editor), G. A. J. Ayliffe (Editor), Blackwell Science, 2004. ISBN-10: 1405101997, ISBN-13: 978-1405101998.
"This superb book is the best of its kind available and one that will undoubtedly be useful, if not essential, to workers in a variety of industries. Thirty-one distinguished specialists deal comprehensively with the subject matter indicated by the title ... The book is produced with care, is very readable with useful selected references at the end of each chapter and an excellent index. It is an essential source book for everyone interested in this field. For pharmacy undergraduates, it will complement the excellent text on pharmaceutical microbiology by two of the present editors."
The Pharmaceutical Journal: "This is an excellent book. It deals comprehensively and authoritatively with its subject with contributions from 31 distinguished specialists. There is a great deal to interest all those involved in hospital infection ... This book is exceptionally well laid out. There are well chosen references for each chapter and an excellent index. It is highly recommended." The Journal of Hospital Infection.: "The editors and authors must be congratulated for this excellent treatise on nonantibiotic antimicrobial measures in hospitals and industry ... The publication is highly recommended to hospital and research personnel, especially to clinical microbiologists, infection-control and environmental-safety specialists, pharmacists, and dieticians."
New England Journal of Medicine: City Hospital, Birmingham, UK. Covers the many methods of the elimination or prevention of microbial growth. Provides an historical overview, descriptions of the types of antimicrobial agents, factors affecting efficacy, evaluation methods, and types of resistance. Features sterilization methods, and more. Previous edition: c1999. DNLM: Sterilization--methods. - U.S. Army Field Manual 21-10, Field Hygiene and Sanitation, 1988, web search 07/02/2010, original source: http://www.enlisted.info/field-manuals/fm-21-10-field-hygiene-and-sanitation.shtml
The purpose of this manual is to assist individual soldiers, unit commanders, leaders and field sanitation teams in preventing disease and environmental injuries. The manual provides information on preventive medicine measures (PMM) to the individual soldier as well as essential information for the unit commander, unit leaders, and the unit field sanitation team on applying unit level PMM. - When Technology Fails, Matthew Stein, Chelsea Green Publisher, 2008,493 pages. ISBN-10: 1933392452 ISBN-13: 978-1933392455, "... how to find and sterilize water in the face of utility failure, as well as practical information for dealing with water-quality issues even when the public tap water is still flowing". Mr. Stein's website is www.whentechfails.com/
- Our recommended books about building & mechanical systems design, inspection, problem diagnosis, and repair, and about indoor environment and IAQ testing, diagnosis, and cleanup are at the InspectAPedia Bookstore. Also see our Book Reviews - InspectAPedia.
- In addition to citations & references found in this article, see the research citations given at the end of the related articles found at our suggested
CONTINUE READING or RECOMMENDED ARTICLES.
- Carson, Dunlop & Associates Ltd., 120 Carlton Street Suite 407, Toronto ON M5A 4K2. Tel: (416) 964-9415 1-800-268-7070 Email: info@carsondunlop.com. Alan Carson is a past president of ASHI, the American Society of Home Inspectors.
Thanks to Alan Carson and Bob Dunlop, for permission for InspectAPedia to use text excerpts from The HOME REFERENCE BOOK - the Encyclopedia of Homes and to use illustrations from The ILLUSTRATED HOME .
Carson Dunlop Associates provides extensive home inspection education and report writing material. In gratitude we provide links to tsome Carson Dunlop Associates products and services.
 | HOME | ABOUT | ASK a QUESTION | CONTACT | CONTENT USE POLICY | DESCRIPTION | POLICIES | PRIVACY | |
| © 2024 - 1985 Publisher InspectApedia.com - Daniel Friedman | |||||||||