[Combined bio-process for treatment of municipal wastewater containing Cu2+].
A combined bioprocess consisting of biosorption section with P. putida 5-x cell as biosorbent followed by a SBR is developed to treat Cu2+ containing municipal wastewater. The optimal preparing technique of P. putida 5-x cell as biosorbent is studied. Under the optimal condition, adsorption capacity of the P. putida 5-x cell to Cu2+ reached 87.3 mg x g(-1). The performance of the combined bioprocess for treating Cu2+ containing wastewater is assessed. The experimental results indicate that after treatment by the biosorption section, the Cu2+ concentration in wastewater reduced to the level that did not inhibit COD removal efficiency of subsequent SBR activated sludge process, although it still affectes the COD adsorption capacity of activated sludge. In terms of COD removal, the biosorption section is efficient for reducing Cu2+ concentration to provide biodegradable wastewater for subsequent SBR activated sludge process.
Wu
Xiao-lin
XL
Department of Chemistry, Tongji University, Shanghai 200092, China.
Wang
Lei
L
Gao
Yan
Y
Su
Yao-dong
YD
Li
Feng-ting
FT
D000327:Adsorption; D001673:Biodegradation, Environmental; D002681:China; D002947:Cities; D003300:Copper / Q000032:analysis*; D016958:Pseudomonas putida / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods
D014874:Water Pollutants, Chemical; D003300:Copper