Fluoride & Arsenic Removal Systems

Effective Fluoride and Arsenic Removal Using Electrochlorination Technology

Fluoride and Arsenic removal system

Arsenic or Fluoride in drinking water cause various health problems.There are many ways to remove the same from drinking water.

Pristine Water and NEERI (National Environmental Research Institute, Government of India) have developed a technique which can easily remove contaminants in drinking water using the process of Electrocoagulation

  • The same process is successfully used to remove Arsenic and Fluoride from water.
  • This system uses the latest technology in the process of Electrocoagulation and not only reduces the content of contaminants to acceptable limits but also disinfects water.
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Easy to operate and maintain

Pristine Water's E-Coagulation Electrolytic Arsenic or Fluoride removal systems are very easy to operate and maintain. It follows a simple electrolytic process to filter out the impurities from water

  • This system consists majorly of Aluminum electrodes.
  • When direct current (DC) passes through the electrodes, electrolysis takes place.
  • During this process, the electrodes produce Aluminum Hydroxide. These Hydroxides make the impurities coagulate along with the Fluorides and form flocs. These flocs settle in the tank and are filtered using a multi-grade filter.

The AC is converted to DC by the rectifier provided in our panel. In remote areas where power supply is not available or not continuous, we offer a Solar Energy based system as well.

System design

System Design

We offer two types of systems.

Each system is designed based on a number of factors like the inlet water quality, flow rate, inlet arsenic and fluoride concentration, and the presence of other inorganic acids that could affect the coagulation.
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Batch Systems

A Batch Arsenic / Fluoride Removal System treats the inlet water / wastewater in one or several 'batch' tanks of various sizes.

  • The batch tanks serve as the reaction tank as well as the flocculation and settling tank.
  • The solids from the batch tanks are then filtered and disposed off appropriately.
  • Batch systems are suitable for smaller flow rates and can range up to 45 cubic meters per day.

Continuous Systems

Continuous Arsenic / Fluoride Removal System are usually used to treat larger flow rates of water / wastewater

  • This system utilizes reaction tanks, flocculation tank, and then a settling tank followed by filtration.
  • The design of the system depends on the inlet fluoride concentration as well as the presence of other inorganic acids that can lower the pH significantly.
  • These are more suitable for larger volumes of contaminated water.

Notes:

We also offer the solar powered variant for the arsenic and fluoride removal system with Photovoltaic Panels and Battery.

This has been especially designed for use in remote areas where electricity is either unavailable or is not continuously available.

Why choose Pristine Water's E-Coagulation Arsenic / Iron Removal Systems

Technical Details

In the process of Electrocoagulation, oxidation reaction occurs which causes dissolution of the anode. Aqueous Al3+ species are formed. The electrode reactions are outlined below:

Anodes: Al(s) → Al3+ +3e-
Cathodes: 2H2O +2e- → H2(g) +2OH-

The H2 bubbles float and hence drive the flotation process. The Al3+ ions further react to form a solid Al(OH)3 precipitate:

Al3+ + 3H2O <-> Al(OH)3(s) + 3H+

The basic principle of the process is adsorption of Arsenic and fluoride at precipitated Al.

Al(OH)3 as depicted in reaction:
Al(OH)3 + xF- → Al(OH)3- xFx + xOH-

electro coagulation ionization icon

Industries using E Coagulation Arsenic / Iron Removal Systems

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