HABR-CASS组合工艺处理棉机织物印染废水的研究

Treatment of cotton woven fabrics printing and dyeing wastewater by HABR-CASS combined process

采用HABR-CASS组合工艺进行棉机织物印染废水处理的中试研究。结果表明,在HABR厌氧池、CASS反应池的水力停留时间分别为24、12 h的条件下,系统对CODCr、BOD5、氨氮、SS的总去除率分别为90.4%、95.5%、87.0%、87.5%,各污染物出水平均质量浓度分别为67.5、13.8、6.9、38.0 mg/L,出水色度为33.0倍,总去除率为95.0%,均低于DB 44/26—2001《广东省水污染排放限值》第Ⅱ时段一级排放标准限值。

A pilot-scale study on HABR-CASS combined process treating cotton woven fabrics printing and dyeing wastewater was carried out.The results showed that,under the condition that the HRT of HABR anaerobic tank and CASS reaction tank were 24 and 12 h respectively,the removal rates of CODCr,BOD5,ammonia nitrogen and SS were 90.4%,95.5%,87.0% and 87.5% respectively,and the mass concentration of the above pollutants in the effluent water were 67.5,13.8,6.9 and 38.0 mg/L respectively,the colority of the effluent water was 33.0 times with total removal rate of 95.0%.The average effluent concentration of each pollutant met the first grade discharge standard of 2nd phase in DB 44/26—2001 Guangdong sewage discharge standards.