加压与常压条件下生物接触氧化工艺性能比较  

PERFORMANCE COMPARISON BETWEEN PRESSURIZED AND NORMAL BIOLOGICAL CONTACT OXIDATION PROCESSES

作　　者：张勇[1] 张林生[2] 夏明芳[3] 张显球[1] 王风贺[1] 

机构地区：[1]南京师范大学环境工程系,江苏南京210042 [2]东南大学环境工程系,江苏南京210096 [3]江苏省环境科学研究院,江苏南京210029

出　　处：《环境工程》2008年第1期35-37,共3页Environmental Engineering

摘　　要：试验比较加压生物接触氧化法与同等条件下常规生物接触氧化法的运行参数及性能，研究表明，加压条件下生物接触氧化法性能有较大提高。在P=0．3MPa条件下，最佳HRT为1．0h左右，当CODcr容积负荷不超过15kg／（m^3·d），维持DO为4-5mg／L，则CODcr去除率为80％-95％，出水CODcr低于100mg／L，气水比仅需（1-4）：1。同等条件下常压生物接触氧化法气水比为10：1，HRT为1．5-2．0h，可承受的CODcr容积负荷为5．3kg（m^3·d）。The running parameters and performance were compared between pressurized and normal biological contact oxidation process in this paper.The studies showed that the performance of pressurized biological contact oxidation process improved remarkably.When controlled the pressure as 0.3 MPa and the volume load under 15 kg COD_Cr/(m3·d),the likely HRT was about 1.0 h,the COD_Cr removed rate could reach 80-95 percent,and the COD_Cr of effluent was below 100 mg/L.In that condition,the dissolved oxygen was about 4-5 mg/L,and the air-water ratio was only(1-4)∶1.In same condition the normal biological contact oxidation process air-water ratio was 10∶1,HRT was about 1.5-2.0 h,and the volume load which could bear was only 5.3 kg COD_Cr/(m3·d).

关 键 词：压力 生物接触氧化 气水比 容积负荷 溶解氧 

分 类 号：X703[环境科学与工程—环境工程] TQ085[化学工程]