无极县制革废水处理厂工艺调试  

Process Commissioning of Wuji County Tannery Wastewater Treatment Plant

作　　者：熊建英[1,2] 

机构地区：[1]上海市政工程设计研究总院<集团>有限公司,上海200092 [2]复旦大学环境科学与工程系,上海200433

出　　处：《中国给水排水》2015年第12期114-119,共6页China Water & Wastewater

摘　　要：河北省无极县制革废水处理采用粗格栅＋细格栅沉砂池＋调节预曝气＋混凝初沉＋水解＋两级AO工艺，调试运行结果表明，预曝气＋混凝初沉可去除28．2％的COD，水解池可去除18％～29％的COD，两级AO系统可去除44．5％的COD；预曝气可去除43．6％～49％的硫化物、混凝初沉可去除29．8％～41．2％的硫化物、水解＋两级A0系统可去除91．9％-97．1％的硫化物。两级AO生物反应池对NH，一N的平均去除率为55．6％～94．7％，对TN的平均去除率仅为35．5％。在进水量为1．5×10^4m^3／d条件下，出水COD≤250mg／L、NH3-N≤35mg／L、硫化物≤1．0mg／L，基本达到预期目标。硝化污泥接种驯化是硝化启动的关键。The combined process of coarse bar screen, fine bar screen, grit chamber, equahzahon and pre-aeration tank, coagulation and primary settling tank, hydrolysis tank and two-stage A/O bioreactor was used in Wuji County Tannery Wastewater Treatment Plant. After the process commissioning, the average removal rate of COD was 28.2% by pre-aeration and coagulation, 18% to 29% by hydrolysis and 44.5% by two-stage A/O bioreactor. The average removal rate of sulfide was 43.6% to 49% by pre-aeration, 29.8% to 41.2% by coagulation and 91.9% to 97.1% by hydrolysis and two-stage A/O bioreactor. The average removal rate of NH3 - N by two-stage A/O bioreactor was 55.6% to 94.7% , while the average removal rate of TN was only 35.5%. At an influent rate of 15 000 m3/d, the effluent concentrations of COD, NH3 - N and sulfide were less than or equal to 250 mg/L, 35 mg/L and 1.0 mg/ L, respectively, which achieved the expected objectives. The inoculation of nitrifying sludge was the key to start the nitrification system.

关 键 词：制革废水 预曝气 两级AO生物反应池 污泥接种 

分 类 号：X794[环境科学与工程—环境工程]