Hi All,
Which water treatment disinfectant chemical disinfects all types pathogens in unsafe water? The water treatment chemical must not leave a harmful residual and should not take the treated water off WHO guideline parameters for safe drinking water.
Regards
Justin
I may sound like a broken record but ozone is a powerful oxidant and disinfectant. Used in drinking water for over a hundred years around the world. It is a molecular form of oxygen. If the water to be treated is pre-filtered (it may not need to be) then ozone will kill all microbial pathogens and leave no obvious residues. You can make it in situ; either by electrolysing the water (simple power source eg batteries or PV are enough to provide power), or using a conventional air-fed ozone generator and dissolution device. I can give you more advice if you need it.
Published by Peter Barratt, Research & Development Director at Oxi-Tech Solutions Limited
Negative for ozone is that it does not leave a residual so microbes can regrow. Forget about electrolysis.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Hi Jo. Absolutely agree with the 'no residual' comment, but the electrolytic method has been commercialised by us and definitely works, I can assure you! We have even spec'd some systems for small community water projects, although our main market is CIP. Best. Peter
Published by Peter Barratt, Research & Development Director at Oxi-Tech Solutions Limited
T&T Eco offer a chemical free treatment.
our Aquasmart Ultra is a superb, clean & safe option.
www.tandteco.com/products/t7-aquasmart-ultra
Contact me: mike@tandteco.com
Published by Mike Page
Chlorine is the best effective, inexpensive, readily available, easy to use all around disinfectant. It works for just about everything except cryptosporidia. Fair for Giardia. Water should be filtered to low turbidity . That will remove crypto and Giardia and will allow most effective use of chlorine. The TOC content determines the DBP production. Low TOC = low DBPs. Ozone is more potent, but it has a lot of drawbacks in costs, need for pretreatment, no disinfectant residual, hard to manage, high energy demand.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Chlorine is the best effective, inexpensive, readily available, easy to use all around disinfectant. It works for just about everything except cryptosporidia. Fair for Giardia. Water should be filtered to low turbidity . That will remove crypto and Giardia and will allow most effective use of chlorine. The TOC content determines the DBP production. Low TOC = low DBPs. Ozone is more potent, but it has a lot of drawbacks in costs, need for pretreatment, no disinfectant residual, hard to manage, high energy demand.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
The most potent disinfectant & yet safe for all flora & fauna; removal of heavy metals is a Herbal Solutions. Contact Mr. Ninad Deshpande ++91 90229 44264 http://www.accede.net.in ninad@accedea.net.in To know better on this Solution read Sewage Water to Drinking Water - EcoTec Process https://www.linkedin.com/pulse/sewage-water-drinking-ecotec-process-rajesh-menon
Published by Rajesh Menon, Founder at Clean Environmental Technologies (CET®)
Re Rajasegar's comment: THMs are NOT carcinogenic in lifetime animal studies dosed in water. Starting with chloroform, they did give tumors is the older rat and mouse studies dosed in corn oil. This has been known for many years, The last lifetime study on bromodichloromethane in 2006 at 700 mg/L gave NO tumors. So, the cancers were an artifact of the test design. WHO Guidelines are based upon non carcinogenicity effects at high doses.
Many water people are not up to date on the science.
I am about to publish a study in Dose-Response Journal of bladder cancer incidence in 8 countries since THMs were discovered and regulated- ( I wrote that regulation in the US while at USEPA)-over 40 years. The bladder cancer incidence rate has been flat--no change. In the US and Canada where THMs are about 1/3 what they were in the 1970's ,
So, use chlorine judiciously. It's easy, and cheap and it works.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
Ozone would fit your description better than most
Published by Peter Barratt, Research & Development Director at Oxi-Tech Solutions Limited
Hi Justin,
Eventhough many technologies and chemicals are available, Chlorine in the form of liquid or gas is most commonly used for disinfecting drinking water. However trihalomethane which is carcinogenic is produced as byproduct of chlorine.
Alternate is co2 gas or UV rays.
Published by rajasegar radhakrishnan, Tata Consulting Engineers Limited - Assistant General Manager (Environmental Engineering)
To ensure disinfection you need combined flittrition and chemical or heat and chemical to ensure al pathegones
Published by Sami Almatari, Water & Sanitation Engineer at SFD
Depending on the composition of your source water, I'd recommend CLO2. IF Bromide is not present. It causes the least amount of DBP formation of all oxidation chemicals but must be generated onsite and you do need a residual dose of chlorine for distribution purposes.
Published by Jean Arenas, Sales and Marketing Professional with Water, Signage and Telecom Experience
There is no need for chemicals of any kind! https://tzenvirohealth.wixsite.com/filtermedia
Published by Anthony Reid Harvey
Mr. Lajul. It is easy to produce chlorine from electrolysis of seawater. The problem is it also produces a lot of bromate from the bromide in teh seawater.
Published by Joseph Cotruvo, President at Joseph Cotruvo & Associates, Water , Environment and Public Health
You can separate bromine from chlori e...
Published by PATRICK OLOYA LAJUL, Dr
You can separate bro.in from chlone
Published by PATRICK OLOYA LAJUL, Dr
Chlorine gas administration plenty effectual from the electrolysis of sea water!
Published by PATRICK OLOYA LAJUL, Dr
Good Afternoon Mr. Nwaogwugwu,
I note you are located in Nigeria. As a germicide, the least cost, most effective and most readily available form of disinfection is chlorine. Chlorination destroys bacteria, virus, protozoa...it is not effective against cysts.
Additional benefits include chlorine will precipitate iron and manganese and will oxidize tannins and hydrogen sulfide (from naturally ocurring gas and / or dead and dying bacteria).
Consult with Mr. Simon Bokor, President Aquathin Ghana http://aquathinghana.com/ and Mr. Gordon Bastiaans, President Aquathin South Africa www.aquathin.co.za .
Warmest regards,
FOR THE BEST TASTE IN LIFE &
38 Years Pure Excellence
...into another Quarter Century re-inventing the water industry !
Think Aquathin...AquathinK !
( visit the all new www.aquathin.com )
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Alfred J. Lipshultz
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Published by Alfred Lipshultz, President at Aquathin Corp.
Every disinfection system has its drawbacks and you have to decide on what works best for your intake water. Ozone is great, but could lead to bromate violations if you have bromide (if you are required to monitor for bromate). UV is great if you control your turbidity since bacteria can hide in particles. Chlorine is an excellent traditional one, but forms DBPs that you may have to monitor depending on where you are. Disinfection in general will be easier with some sort of pretreatment to reduce the load of organics that can create a demand for disinfectants or affect UV efficacy. A good approach will be to identify the regulations applicable to your area and decide on the best affordable technology.
Published by Adam Eyring
You Have Four ways to disinfect water
1- using of Ozone
2- using of Hydrogen peroxide
3- UV
4- Filteration using Filter with pores 0.45 microns (Bacterial filter)
Or you can use the following (I recommend that)
1-chlorine injection
2- Carbon filter to remove the Chlorine, smell, taste
3- Micron Filter
4- UV lamp
5- Ozone
Then after you fill the bottles or containers with ozonated water leave it for 8 hours to make sure Ozone turns to oxygen and become not harmful
Published by Mohamed Abdella, Chemist
Justin, You could forget about chemicals altogether, were you to explore the use of silver treated media of granulated ceramics: http://tzenvirohealth.wixsite.com/filtermedia
Look for more about this at the WHO Household Water Newsletter, Issue 49 ...scrolling down under Announcements and Requests to: About TAM Ceramics Water Filter Media
Published by Anthony Reid Harvey
Contact me if you are interested in Ozone Nanobubble.
Published by Hiroshi Sasaki, Director for Overseas Business Development at ANZAIKANTESU,Co,Ltd
Sodium Hypo chlorite generator. check our website www.pristinewater.in
Published by Ravi Chandran, Managing Director at Pristine Water
Sodium hypochlorite is not safe and carcinogenic .
It will leave residual in the water.
Published by Mohamed Abdella, Chemist
I would use Ozone.
Published by Daryl Gates, Heavens Mist Mineral Water - Owner
Dear Daryl!
I think we need to use some purification systems for water desinfection. For example our ELECTROMAGNETIC MILL AVS-150. The unit operates on the principle of transforming the energy of electromagnetic field into other forms of energy.
The units can be efficiently used for
production of multicomponent emulsiosn and suspensions,
acceleration of production of finely dispersed mixtures,
activation of materials both in dry form and dispersed in water,
leading to improcved properties of resin and decreased vulcanizing time;
acceleration of heat treatment,
production of protein material from yeast cells;
improvement of microbiological stability of food products and activation of yeast in bread baking;
improvement of crude products and finished products from meat and fish;
intensification of extraction processes, including production of broth, juice, pectin etc;
production of suspensions and emulsion of increased microbiological safety in food production without the used of staibilizers and increase of product output.
And also I agree that Ozone disinfection is perfect.
Published by Anna Morynets