Infocus: Sustainable Approach for Effluent Treatment in Chemical Industry

Sustainable Technosolutions for Environmental Protection (STEP) Pvt. Ltd. was established in 2010. Since the last 6 years STEP has worked in process audit; water and wastewater audit/management/treatment and infrastructure projects. Three of the concepts are listed below: 1) New generation of floccu...

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Bibliographic Details
Published in:Chemical industry digest (Mumbai) 2017-02
Main Authors: Mishra, Dhiraj, Gaikwad, Mitesh, Dhanawade, Sayali, Palekar, M G
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Advantages
Audits
Case studies
Chemical industry
Chemical oxygen demand
Cost estimates
Efficiency
Effluents
Environmental protection
Sewage treatment
Solvents
Sustainability
Waste treatment equipment
Wastewater
Water treatment
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Summary:Sustainable Technosolutions for Environmental Protection (STEP) Pvt. Ltd. was established in 2010. Since the last 6 years STEP has worked in process audit; water and wastewater audit/management/treatment and infrastructure projects. Three of the concepts are listed below: 1) New generation of flocculants to reduce COD/TSS 2) Adsorption-separation technology to recover and reuse a chemical from effluent 3) Novel Gas-Liquid reactor, Downflow Gas Contactor (DGC) for effluent treatment These concepts have shown encouraging results in lab and pilot plant. Use of new generation flocculants for wastewater treatment is a sustainable approach because the chemical consumption is less, and chemical oxygen demand (COD) & total suspended solid (TSS) removal efficiency is more, at a lower cost. Case study I Chemical Company In Case I, effluent treatment was done of a commodity & specialty chemicals manufacturing company. Case study II Specialty Chemical company In this case effluent treatment was tested on ingredients for personal care & food manufacturing company. D is given in Table 4. [...]using D, the monthly cost of flocculant would reduce by almost 50% with advantage of increased removal of TSS and COD. B) Adsorption- separation to recover and reuse a chemical from effluent Adsorption- separation technology is widely used for purification of intermediates & APIs in pharmaceutical industry, biochemicals & natural products, and for removal of metal. 4) Ammonical nitrogen reduced from 93 ppm to Conclusion Based on the above case studies, DGC seems to be an interesting option wherein the effluent treatment to reduce COD/BOD could be done...
ISSN:0971-5266