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以石油裂化催化剂废水为研究对象,采用电絮凝作为废水的预处理单元,研究CANON工艺的启动及脱氮性能.结果表明:电絮凝对原水浊度的去除率达到98.7%±1.2%,对COD去除率达到32.3%±4.5%.利用人工模拟高氨氮废水成功启动CANON工艺,TN去除率最高达到62.0%,TN去除负荷最高达到0.19 kg·m~(-3)·d~(-1)(以N计).使用石油裂化催化剂废水对微生物进行了驯化,经过108 d的运行,微生物成功驯化。利用CANON工艺处理石油裂化催化剂废水,COD去除率为40.9%±13.2%,TN去除率为67.3%±12.7%,TN去除速率为(0.07±0.02)kg·m~(-3)·d~(-1)(以N计).反应器出水COD<100 mg·L-1,NH_4~+-N<10 mg·L~(-1),满足石油化工企业污水的排放标准(GB8978—1996).
Taking the petroleum cracking catalyst wastewater as the research object, the electro-flocculation was used as the pretreatment unit of the wastewater to study the start-up and denitrification performance of the CANON process.The results showed that the removal efficiency of the turbidity of the raw water reached 98.7% ± 1.2% The removal rate reached 32.3% ± 4.5% .Using artificial simulated high ammonia nitrogen wastewater to start CANON process, the removal rate of TN was up to 62.0% and the TN removal load was up to 0.19 kg · m -3 · d -1 Measured in N.) The microorganisms were domesticated using petroleum cracking catalyst wastewater and the microorganisms were successfully domesticated after 108 days of operation. The removal rate of COD was 40.9% ± 13.2%, TN removal rate was 67.3% ± 12.7% and TN removal rate was (0.07 ± 0.02) kg · m -3 (-3) · d ~ -1) (in terms of N). The effluent COD of the reactor is less than 100 mg · L-1 and NH_4 ~ + -N is less than 10 mg · L -1, which meets the emission standards for wastewater from petrochemical enterprises (GB8978-1996) .