Waste Water Treatment - Electrooxidation

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Electrochemical Technology For water and wastewater treatment

Transcript of Waste Water Treatment - Electrooxidation

Page 1: Waste Water Treatment - Electrooxidation

Electrochemical Technology

For water and wastewater treatment

Page 2: Waste Water Treatment - Electrooxidation

Water & Wastewater treatment technology focused venture.

Engaged in:

• Research and Development of Electrochemical process based water and wastewater solutions.

• Development of Chemical free disinfection, sanitation and cleaning process for industries, hospitals, hotels and domestic applications.

• Development of Chemical free laundry and cleaning application.

Sector focus:

• Chemical, Pharmaceutical, Food processing and Dairy

• Medical and Hospitality industry

• Low cost water disinfection and sanitation in slums & rural areas

About XH2O Solutions

Page 3: Waste Water Treatment - Electrooxidation

About Presentation

• Bottlenecks of conventional water treatment technologies

• De-bottlenecking water treatment with Electrochemical AOP

• Introduction to Electrochemical AOP reactor

• Reactions inside the Electrochemical reactor

• Case studies

• Comparison of Electrochemical AOP with other AOP process

• Complementary – not competing

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Bottlenecks of conventional water treatment process

• Conventional methods include – Biological process, Membrane filtration, Carbon adsorption, Alum dosing etc.

• Conventional processes are unable to meet the complexity of present day chemical / organic treatment.

• Unable to remove color, bio-refractory organics, solvents, SS to required extent.

• Requires huge space and infrastructure.

• Long holding / retention times

• Sensitive to shock loads

• Capacity bottleneck – cannot be changed as and when needed

• Secondary issues like solid waste and concentrate generation

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De-bottlenecking wastewater treatment using Electrochemical AOP

1. Electrochemical AOP system unselectively destroys organics in wastewater

2. Process generates no solid waste

3. Effective for destruction of bio-refractory organics

4. Effective for destruction of color

5. Improves the efficiency of Aerobic process, enhances methane generation in An-aerobic process.

Salient features:

a. Requires very less space

b. Can fit the existing process easily

c. Easily scalable

d. Distributed treatment possible

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Efficient generation of mixed oxidant

ElectroOxidation reactor - Working principle

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CETP wastewater

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Ammonical Nitrogen and COD

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Direct Dye wastewater

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Pesticide wastewater

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Pesticide wastewater -2: High COD

Initial COD – 30,000 ppm

Final COD – 2200 ppm

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Glycerol in 25% NaCl solution

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Comparison of Electrooxidation with other Advanced Oxidation process

• Electrooxidaiton operates at neutral pH – as compared to other AOP process requiring acidic pH.

• Radicals in Electrooxidation needs no additional activators – as compared to Iron in fenton, peroxide in Ozonation.

• Electrooxidation activates inorganics like chloride, sulfate in wastewater to : generate secondary radicals – Other AOP are unable to generate such secondary oxidants.

• Most of the radical generation is in-situ, needing hardly any additional chemical storage.

• Operates at normal Voltages – unlike hundreds of voltage of Ozone generation.

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Complementary to conventional process

A – Bio refractory organics

B – BOD

C – CO2

Combined Electrooxidation and Biological

treatment1. Making use of best of both worlds

2. Opens new avenues for Electrooxidation process

3. A unique solution to handle shock loads in biological system