摘要
采用铁炭微电解深度处理工艺处理以制革废水为主要成分的园区污水厂二级生化处理出水,通过正交试验及单因素优化试验确定了主要影响因素和最优微电解条件。结果表明:铁炭微电解的影响因素从大到小依次为铁炭比>反应时间>pH值。生化出水平均CODCr=116 mg/L时,在反应时间1.5 h、pH=5的最佳运行条件下,自制铁炭材料(Fe/C=3/1)和所购铁炭颗粒商品成品的微电解出水平均CODCr分别为45 mg/L和50 mg/L,出水CODCr满足《城镇污水处理厂污染物排放标准》(GB 18918—2002)中的一级B排放标准(60 mg/L),自制铁炭材料的微电解运行成本约为0.28元/t。
Ferric-carbon microelectrolysis treatment processes were applied for advanced treatment of biologically treated effluent of tannery wastewater in an industrial park. Priority of impact factors and their optimal conditions were studied with an orthogonal experiment and a single impact factor experiment. The results show that the priority of impact factors for ferric-carbon microelectrolysis treatment processes is Fe/C ratio〉reaction time〉pH. The self-made ferric-carbon （Fe/C=3/1）and the purchased ferric-carbon granule products decrease the average CODcr from 116 mg/L to 45 mg/L and 50 mg/L, respectively, under the condition of 1.5 h of reaction duration and pH 5. Treated water both meet the B level in first grade of the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （GB 18918--2002）. Running cost for self-made ferric-carbon is 0.28 yuan/t.
出处
《净水技术》
CAS
2012年第5期37-41,共5页
Water Purification Technology
基金
桐乡市科技计划项目(201002029)
嘉兴市科技计划(2011AZ1015-1)
关键词
铁炭微电解
深度处理
制革废水
影响因素
ferric-carbon microelectrolysis advanced treatment tannery wastewater impact factors
