alexa Perspectives on Biological Treatment of Tannery Effluent
ISSN: 2475-7675

Advances in Recycling & Waste Management
Open Access

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Review Article

Perspectives on Biological Treatment of Tannery Effluent

Sabumon PC*

School of Mechanical and Building Sciences, VIT University, Chennai, Tamil Nadu, India

*Corresponding Author:
PC Sabumon
Professor, Environmental Engineering Division
School of Mechanical and Building Sciences
VIT University, Chennai Campus
Chennai-600 127, Tamil Nadu, India
Tel: 914439931048
Fax: 914439932555
E-mail: [email protected]/[email protected]

Received January 25, 2016; Accepted March 01, 2016; Published March 08, 2016

Citation: Sabumon PC (2016) Perspectives on Biological Treatment of Tannery Effluent. Adv Recycling Waste Manag 1:104. doi:10.4172/2475-7675.1000104

Copyright: © 2016 Sabumon PC. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Leather processing is an important economic activity around the world and uncontrolled release of tannery effluents to natural water bodies causes environmental degradation and increases health risks to human beings. The treatment of tannery effluent is a complex technological challenge because of the presence of high concentrations of organic and inorganic pollutants of both conservative and non conservative nature. In this review paper information relevant to tannery effluents and its prospective on biological treatment processes and other recent potential biological processes are discussed. Emphasis is laid on the removal of organic matter (COD/BOD), NH4-N and sulphide/sulphate from tannery effluent. Though the aerobic process is efficient in treating tannery effluent, it requires an extended aeration time at low organic loading rates and thereby increasing the overall treatment cost. Anaerobic process is not effective because of sulphide inhibition problems. Sulphide inhibition control is essential for successful anaerobic treatment of tannery effluent. Sequencing Batch Reactor (SBR) and membrane reactor technologies are found to be effective for removal of organic matter and ammonia, but they are having very high operational cost. A recent development is the employment of alternate electron acceptor/donor already present in tannery effluent for simultaneous removals of COD/BOD, NH4-N and sulphide/sulphate with possibility of elemental sulphur recovery at higher organic loading rates. The recent development shows possibility of high rate treatment of tannery effluent in an alternate and an effective way suitable to both developing and developed countries.

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