Wastewater

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Highly toxic azo dyes in wastewater from textile industry can now be removed through an eco-friendly method.

A new eco-friendly method could soon be available to address pollution due to azo dyes in wastewater from textile units. 

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A new technique makes use of minuscule particles of the yellow metal and their property to change colour in the presence of metal particles such as lead.

Gold, the favourite metal of Indian women, is increasingly becoming popular among scientists as well, though for a different reason. A group of Indian researchers has used gold nanoparticles to develop a simple method to detect lead in wastewater.

The new technique makes use of specially-produced minuscule particles of the yellow metal, and the property of gold nanoparticles to change colour when they ‘bunch-up’ in the presence of metal particles such as lead because of their optical properties. 

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A partnership between Biome, ACWADAM and WIPRO brought stakeholders together to map Sarjapur's aquifer.

The problem of Bengaluru’s water is well known. The demand for water tankers skyrockets during the summer months, when municipal and borewell water supplies run dry, and many of the city’s lakes, actually man-made tanks, lie neglected and polluted.

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A new method for removing chromium-6, a highly toxic heavy metal, from waste water has been developed by a group of scientists from India and Ethiopia.

Heavy metal poisoning is a growing concern in many parts of the country. A new method for removing chromium-6, a highly toxic heavy metal, from waste water has been developed by a group of scientists from India and Ethiopia. They claim it to be low-cost and safe.

The new method uses water hyacinth, a weed known for its ability to spread rapidly over water bodies. It is used for cleansing polluted water bodies owing to its remarkable capacity of absorbing pollutants. 

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Researchers have developed a slurry photocatalytic membrane reactor to remove harmful drugs from hospital wastewater to make it safer for the environment.

Hospital wastewater, which includes drugs, is a major environmental problem. A group of researchers from Belgium and India has developed a novel method of treating wastewater to get rid of such harmful substances from hospital waste.

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Hi i am working for a project in ETP. Our effluent contains a TDS of 3000 ppm while after equalisation - that is after addition of lime and alum - our TDS increases to 4500 ppm giving our outlet TDS to be 5000 ppm. In this project we haven't installed any tertiary process. It consists of simple equalisation tank, primary clarifier, surface aeration , secondary clarifier followed by sand filter and carbon filter. after addiiton of lime our ph is 11.5 and after addition of alum we maintain a ph of 10.5. Please suggest me some solution for this problem.

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There is a higher BOD and COD rate. Capacity of kitchen waste-water is 5 m3/day. Could someone please suggest me how to treat this waste-water and what is the reason for too much rate of BOD & COD?

BOD: 4100 mg/L

COD: 7000 mg/L

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As cities spread wide, grey infrastructure projects flout green norms to provide affordable housing for all.

Far in the distance, towards the edge of Noida and Greater Noida flows the Hindon river amidst clusters of modern highrise buildings. A few years ago, the landscape here was more countrified and quite distinct from the low rise neghbourhoods of Delhi dotted with its numerous parks and abundant institutional spaces. 

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Govt says out of 445 river stretches, 275 are polluted

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Hello Sir/Madam, I wanted to know about ground water recharge using waste water. Is it alright to do it? I'm running a commercial kitchen on my terrace and all its washing water( no solid objects ) goes into the sewer. Is it alright to have a recharge pit near the borewell and redirect the washed water into it for ground water recharge. My bore is 80 feet deep . Please give me some dimensions for the pit and what all goes into the pit. Can I have the pit next to my bore? Thanks & Regards, Karthikeyan Karuppiah.

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