Water Purification in Flooded Areas

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What can be the possible solutions to purify turbid water in flooded areas for emergency action?

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22 Answers

  1. By creating emergency dam, is the best way to treat it. Because the flooded water is in motion, it wont be easy to treat it while is in motion. Best way is to allow water to settle. before you can control turbidity.

    Thank you,

    Mangena P

  4. Dear prabina, 

    As per our experience, 

    The best solution during emergency times like flood time. 

    Better go with Portable water purification system. 

    Sand filter+carbon filter+ cartridge filter + UV 

    Through this system we ll get drinkable water during emergency times 

    Thanks 

  5. Dear prabina, 

    As per our experience, 

    The best solution during emergency times like flood time. 

    Better go with Portable water purification system. 

    Sand filter+carbon filter+ cartridge filter + UV 

    Through this system we ll get drinkable water during emergency times 

    Thanks 

    1 Comment

  7. Good question Pratibha your thinking is positive now a days many countries e.g. East India, China etc. are facing problems of Flood. most of the people die with drinking polluted water. In flood area leaved huge number of victims with deficiency of water, food, energy and transportation. Lack of potable water is one of the most serious problems, since it is the most vital factor or human life. Since water is relatively heavy goods to be delivered with wrecked transportation system, mass-supplying effective water purification system to the victims would be practical.

     The system should satisfy following conditions:

    1.   Low cost and easy to make;
    2.  Easy to transport, install and operate;
    3. Small energy consumption (or powered by renewable energy, inexpensive batteries or human power which are easily accessible on the user’s places);
    4. Outdoor usable;
    5.  High credibility, especially on sterilization aspect. Some appropriate technologies, such as charcoal filtering water purifiers are one of good candidate.

    The following water treatment methods for application at household level generally are recommended to reduce faecal contamination of drinking water:

    1. Simple water purifier (ceramic water filter) can be used in flooded area and can be supplied by government & local authorities.
    2. Water storage at household level is a simple method to improve the water quality. Plain sedimentation however can only partly remove turbidity and faecal coliforms – the common indicator used to quantify the degree of faecal pollution. The main health risk associated with household water storage is the risk of recontamination through inappropriate handling practices.
    3.  Boiling of water kills viral, parasitic and bacterial pathogens.
    4. Water pasteurisation achieves the same effect as boiling at temperatures of only 70°C-75°C, but requires a longer exposure time of approximately 10 minutes.
    5.   Water filtration by simple household filters, such as ceramic candle filters, stone and sand filters,
    6.  Water disinfection with chlorine/H2O2/Iodine tablets are used to kill microorganisms (bacteria and viruses),
    7.   Solar water disinfection (SODIS) is a simple water treatment method using solar radiation (UV-A light and temperature) to destroy pathogenic bacteria and viruses present in the water.

    Regards,

    Prem Baboo

  9. We have already solve this promblem

    send your requirement to

    p.bulsing@pureleau.nl and I send you our solution

    1 Comment

    1. Dear Peter Bulsing,

      Thank you for ​sharing your ​contact details ​with prabina shrestha.

      However, if you ​would share ​additional ​details about ​solutions
      (​products and ​services) for ​the issue, ​others who have ​similar problem ​could see it ​and benefit ​from it.  ​

      Best regards, 
      Duško

  10. Dear Prabina，

    Technical speaking, your question is not for daily water treatment or water treatment plant (WTP).

    As you said 'flood area and emergency condition', you need portable water treatment system and its capacity should be equal and less than 1,000 m3/day. The possible solutions and its providers are easy to be found the professional Website.

     

    BR,

     

    Wu Hao 

    1 Comment

  11. Hi Prabina, 

    Ultrafiltration or microfiltration cartridges composed of hollow fiber membranes is a solution to emergency action in flooded ares : the cartridges can be used by anyone to produce the water for a family every day . It as small, light, easy to use and provide clarified and desinfected water from any ressource. The cartridge can be easily cleaned to be used for months. please contact me for details i.duchemin@polymem.fr

  15. Prabina,

    We offer solar based water treatment that has been used by other NGOs and military for specifically the same type of application. You can read about it more about more at our website at http://www.solutionsrecovery.com/wastewater-treatment-products/solar-powered-water-treatment/. 

    1 Comment

  16. Our device produces a chlorine based disinfectant that only uses common salt.  It is powered by a rechargeable battery and on-board solar panel (or USB).  It provides consistently strong disinfectant, automatic dosing and designed to military standards - extremely durable.  It will last ten years and has no replacement parts.  You can store it for long periods of time and then use it immediately.  It is not a filter but will sterilize just about any source of fresh water and it will not clog.  It has been deployed world-wide by leading NGOs.  The H2gO website is www.aquaresearchllc.com.  We also have larger community based systems.  

  17. Dear Prabina, if you are in the area of Chitwan / Nawalparasi, we could supply you with clean water right now. Check out www.facebook.com/nexuscenter1 or www.nexus-center.ch 

    If you are looking for a longterm solution, there are various options. I am happy to provide additional info if needed. 

    For short term, it might be late now anyway. Locally you could contact any NGO who might help you e.g. SDC or Helvetas from Switzerland who are active in Nepal. Also Heifer International is trying to help in Banke area and others. 

    Otherwise you could check mobile systems from Lifesaver, Katadyn, Lifestraw or larger mobile systems such as the Aquifier from Trunz Water Systems. But until they arrive in Nepal, it could be too late.

    Our shops are currently struggling with a lack of Jars. We run our of stock... So if you have jars, we can provide you with water! 

    Best regards and all the best,

    Lars

    1 Comment

  18. Good Morning Prabina;

    The Aquathin Antimicrobial AquaShield has effectively performed for removal of turbidity and destruction of bacteria and virus.  http://www.aquathin.com/sites/default/files/aquathin%20reverse%20osmosis%20aquashield%20filter.pdf 

    Aquathin South Africa and Aquathin d'Haiti have many applications including test data for cholera.

    Warmest regards,

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  19. Hi Prabina;

    I suspect what you need is both something that will work in disaster like situations, can give clean water for a community, is portable, easy to install and operate. 

    I used to use one such product that was a UF based manual backwash unit. Depending on turbidity levels it could produce 500-700L per hour. Note as a UF based unit it will not remove things dissolved in the water but will remove most bacteria and a good amount of the viral load as well as the turbidity. the unit requires about a metre of head pressure to operate so the water to be cleaned will have to be raised above the unit.

    Let me know if interested and i will connect you to a supplier in India.

    Sanjay

     

    2 Comments

    2. Hi sanjay

      I am looking for low cost and easy technology that can be caried out in community. Can I get the details on UF based manual backwash unit that you mentioned?

      3 Comment replies

  20. What you are looking for is a situation dealing with disaster management. A simple method in the area of disaster to treat the water and provide to the immediate survivors. 

    Firstly, considering the water would be turbid it needs a special zeolite based powder to settle the turbidity. This treatment can be carried out manually at site. No equipment required. 

    The second step is to disinfect the water to eradicate microbial contamination in the water. This is done with the dispenser units and our precursor chemical Purojal DW at site. A very simple backpack unit that requires 15 W power at site. This backpack unit can be set up at the disaster site within minutes and the system can start disinfecting the water for treatment in matters of minutes. 

    If you require more details you can contact me at advenvtech@gmail.com. 

    1 Comment

  21. Dear Prabina Shrestha.  Hollow Fiber   MF/UF membrane  equipment is very good solution.