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Anaerobic treatment of high sulphate containing pharmaceutical wastewater

Lookup NU author(s): Shreeshivadasan Chelliapan, Dr Paul Sallis



This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).


The effect of different organic loading rate (OLR) to an anaerobic reactor performance and sulphate reduction was investigated. Sulphate concentration in the feed varied from 100 to 3000 mg.L-1 and up to 97% removal efficiency was observed at OLR 0.43 - 1.23 kg COD.m(-3).d(-1). However, the removal efficiency showed some decline (to 53 - 67% removal) at OLR 1.53 - 3.73 kg COD.m(-3).d(-1), probably due to high sulphate concentration in the feed during this period. At a reactor OLR of 1.86 kg COD.m(-3).d(-1) (HRT 4 d), the soluble COD reduction was around 70 - 75%. Nevertheless, when the OLR was increased to 2.48 - 3.73 kg COD.m(-3).d(-1), the COD removal efficiency decreased to 45%. The microbial aspects of sulphate reducing bacteria (SRB) results indicated that sulfidogenic bacteria, such as Desulfovibrio, had contributed substantially to the treatment process (around 16 - 36% when the reactor was operated at OLR 0.86 - 2.98 kg COD.m(-3).d(-1)).

Publication metadata

Author(s): Chelliapan S, Sallis PJ

Publication type: Article

Publication status: Published

Journal: Journal of Scientific & Industrial Research

Year: 2015

Volume: 74

Issue: 9

Pages: 526-530

Print publication date: 01/09/2015

Acceptance date: 26/05/2015

Date deposited: 27/04/2016

ISSN (print): 0022-4456

ISSN (electronic): 0975-1084

Publisher: National Institute of Science Communication and Information Resources (NISCAIR)