Abstract:

With the wastewater treatment project of a taurine production enterprise in Hubei as a case study, this paper analyzed the production process and wastewater quality characteristics of the enterprise, the targeted treatment process of “hydrolysis acidification+pre anoxic+aerobic biochemistry+post anoxic+secondary sedimentation” was adopted. When the average influent COD, ammonia nitrogen, and total nitrogen were 956.8, 50.6, 99.1 mg/L, respectively, the average effluent COD, ammonia nitrogen, and TN were 73.6, 1.6, 12.2 mg/L, respectively, with the average removal rates could reach 92.3%, 96.9%, and 87.7%, respectively. The effluent water quality was stable and meet the limits of water pollutants for newly built enterprises in the Chemical Synthesis Pharmaceutical Industry Water Pollutant Discharge Standard(GB 21904-2008). By adopting tapered aeration and fan frequency conversion control, energy consumption was significantly reduced, and the operating cost was 1.60 CNY/m³.

Key words: taurine production wastewater, rear anoxia tank, sulphide, ammonia nitrogen, tapered aeration

摘要：

湖北某牛磺酸生产企业废水处理工程，从企业生产工艺和废水水质特点出发，有针对性地采用“水解酸化+前缺氧+好氧生化+后缺氧+二沉”工艺处理该企业生产废水。进水平均COD、氨氮、总氮分别为956.8、50.6、99.1 mg/L时，出水平均COD、氨氮、总氮分别为73.6、1.6、12.2 mg/L，COD、氨氮、总氮平均去除率可分别达到92.3%、96.9%、87.7%，出水水质稳定，达到《化学合成类制药工业水污染物排放标准》（GB 21904—2008）中新建企业水污染物排放浓度限值。采用渐减曝气和风机变频控制，能耗显著降低，单位水量运行费用为1.60元/m³。

关键词: 牛磺酸生产废水, 后缺氧池, 硫化物, 氨氮, 渐减曝气

CLC Number: 

• X703