Abstract:
Bio-sludge could adsorbed both Cu+2 and Zn+2 from the wastewater. Both resting and autoclaved bio-sludge showed Cu+2 adsorption yields of 13.56% and 16.02% higher than that of Zn+2. Both adsorbed Cu+2 and Zn+2 could be eluted from the bio-sludge by washing with 0.1N HNO3 solution. The elution yield was 78.14?0.27%. By using sequencing batch reactor (SBR) system, both organic matters and heavy metals. The Cu+2, Zn+2, COD, BOD5 and TKN removal efficiencies of SBR system with synthetic wastewater under MLSS of 4,500 mg/l and HRT of 3 days were 95.65?0.23%, 93.24?0.07%, 92.84?0.2%, 98.42?0.36% and 65.41?5.66%, respectively. However, the removal efficiencies with industrial estate wastewater were quite low. To increase the removal efficiencies in the industrial estate wastewater, the glucose had to be supplemented. The Cu+2, Zn+2, COD, BOD5 and TKN removal efficiencies of the system with glucose supplemented industrial estate wastewater were 80.87?0.79%, 75.13?1.28%, 96.72?0.14%, 97.78?0.33% and 82.25?0.25%, respectively.