COD Reduction Using Modified Effluent Treatment Flowsheet for Waste Water
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 2, Issue 4
Abstract
The manufacturing process of DASDA (4, carried out mainly by Sulfonation followed by Oxidation and Reduction. In this process iron powder and hydrochloric acid produces large quantity of solid ferrous chloride which is hazardous solid problem during the waste water treatment. After oxidation is carried out the filtrate contains 1.2 4’-dinitrostilbene 2, 2’ – disulphonic acid) which goes along with the waste water stream to effluent treatment plant and increases COD level. The cost of treatment of effluent to decrease the COD adds up to cost of production. Moreover, time required for treatment also slows down the production. As there is no replacement of this process one can either recover DNSDA or nullify its effect before COD increases in the effluent stream. Here experiments have been carried out and it has been shown that how cheap adsorbents such as activated carbon and lignite powder can drastically decrease the COD levels. With a change in conventional effluent treatment flowsheet the COD is reduced substantially at the first stage facilitating further treatment. These results will help all the small and medium scale in required in present equipment setup. We are trying to approach a cleaner production method which is more suitable method in order to get a clean manufacturing process with reduced waste.
Authors and Affiliations
Krunal S. Ramanandi
Keywords
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