摘要
为解决剩余污泥的处置问题,研究好氧-沉淀-厌氧(OSA)工艺和投加化学解偶联剂工艺的控制过程和减量效果。实验结果表明:OSA工艺控制负荷为1.4 kg/(m3·d)时,污泥减量率可达30%;污泥负荷为3.6 kg/(m3·d)时,投加化学解偶联剂工艺的污泥减量率可达50%。但由于化学解偶联剂易发生失效导致成本增加,且解偶联剂会使污泥沉降变差,对污水正常运行产生较大影响,故推荐OSA工艺为污泥减量化技术途径,可减少污泥量(按含水率85%计)6 kt/a,减少污泥处置费用约420万元/a。
In order to solve the disposal problem of excess sludge,the control process and sludge reduction effects of Oxic-Settling -Anaerobic （OSA）process and dosing of chemicaluncoupler process were studied.Result showed that for OSA process,the sludge reduction rate could reach 30% at the control load of 1.4 kg/（m^3 ·d）,and for dosing of chemicaluncoupler process,the sludge reduction rate could reach 50% at the control load of 3.6 kg/（m^3 ·d）.However,chemical uncoupler are likely to lose effectiveness and lead to increase of cost,in addition,uncoupler may worsen the settlement of sludge and thereby exert great effects on normal operation of waste water,so OSA process was recommended as the technological route for sludge reduction,which could reduce sludge by 6 kt/a （calculating with water content of 85%）and reduce expenses on sludge disposal by about RMB 4.2 million/a.
出处
《石油化工技术与经济》
2015年第4期35-38,共4页
Technology & Economics in Petrochemicals
