| 摘要(英) |
Looking at the domestic carbamate pesticide manufacturing process often add organic chemicals, Therefore, the outsourcing process wastewater and removal comprehensive wastewater often contain toluene, methanol, isopropyl alcohol, sodium carbonate and trace toxic substances . Two stocks differences wastewater with a variety of organic chemicals contained in the high and low concentration, mostly treated by chemical coagulation and aerobic activated sludge treatment method compared the effectiveness of different treatment ideal. In this study, upflow anaerobic sludge blanket (UASB) in series with activated sludge (AS) module, real carbamate pesticide plant wastewater treatment, start running under the control of the relevant operating parameters, to explore the effectiveness of COD removal of the module.
Research on the use of fructose in food industry wastewater treatment process of anaerobic sludge and chemical sludge soap were domesticated. UASB reactor sludge started planting seed main operating parameters of wastewater into the stream flow: 4 ml / min, the flow of wastewater reflux : 4 ml / min, hydraulic retention time: 150hr, into the flow of wastewater COD load: 507 mg / L, pH: 7.2, temperature: 26 ~ 29 ℃, MLSS: 34,300 mg / L. The activated sludge began planting seed start main operating parameters are: wastewater into the stream flow: 4 ml / min, hydraulic retention time: 150hr, DO: 2 ~ 3 mg / L, temperature: 25 ~ 28 ℃, MLSS: 2,280 mg / L. Integrated with process wastewater from a different level to improve the inflow COD COD load to 8,430 mg / L, the set of modules average effluent COD is 52 mg / L, COD removal efficiency of 99.4% can be maintained for better removal efficiency of COD, and comply with effluent discharge standards EPA announced 100 mg / L or less regulation surface requirements. By statistical real plant wastewater COD concentration average range is 1,000 ~ 8,000 mg / L, this method can prove there is sufficient capacity to handle carbamate pesticide comprehensive process wastewater.
Outsourcing COD removal of wastewater into the stream load range of 560 ~ 2,790 mg / L, the entire module average effluent COD value of 269 mg / L, COD removal efficiency of 81%, due to inability to meet effluent discharge standards EPA announcement 100 mg / L or less face regulatory requirements, so the whole story can only be maintained outside the current removal manner. By outsourcing statistics real plant wastewater COD removal average concentration range is 50,000 ~ 150,000 mg / L, can prove that this method is not sufficient capacity to handle the outsourcing carbamate pesticide waste removal.
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| 參考文獻 |
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