Effect of Electrocoagulation on Physico-Chemical Characteristics of UASB Reactor Treated Urban Wastewater: A Batch Study

Applicability of electrocoagulation (EC) process for post-treatment of UASB reactor-treated municipal wastewater was investigated. Tests were conducted with batch reactor. Effect of current density and electrolysis time on the physico-chemical quality of UASB effluent has been studied. Variation in effluent COD, turbidity, TSS, TKN, NH3-N, nitrate, phosphate and final pH were studied at varying current and time. Overall observation revealed positive effect of time and applied voltage on the EC process. Faster removal observed at either higher current or for more treatment time. Reduction in electrical conductivity shows removal on dissolved ions from the effluent. Final pH variation was on 0.15 unit for studied range of time and current.