高盐度水产品加工废水治理工艺研究

Study on Treatment of High Salt Aquatic Products Processing Wastewater

使用海水进行水产品加工的企业所排放的废水盐度、氨氮浓度高,在此环境下,微生物的活性受到影响,增长速度慢,产率系数低,处理难度较大,文章结合工程实例介绍了“水解酸化+两级生物接触氧化”处理高盐度水产品加工废水的运行效果,结果表明:对Cl^-浓度平均8000mg/L的高盐度水产品加工废水,系统对COD、SS、氨氮的去除率分别超过了88%、90%、85%,出水COD、SS、氨氮分别低于100mg/L、70mg/L、15mg/L,出水完全可以达到《污水综合排放标准》(GB8978-1996)一级排放标准。

The concentration of salt and NH3 - N in wastewater from Aquatic Products Processing company which used seawater during the course of the product. Under this circumstance, the activity of microorganism is influenced, the increase rapidity of microorganism is slow, the production quotiety of microorganism is low. It is diffcuh for us to treat the Aquatic Products Processing wastewater. Performance case and processing result using ＂hydrolydic acidification ＋ biological contact oxidation process＂ for treating high salt aquatic products processing wastewater is introduced. The results show that COD, SS, NH3 - N in treated water can meet the nation discharge standards（ GB8978 - 1996）, with 88%, 90% and 85% of removal rate respectively, when the concentration of Cl^- is 8000mg/L, COD, SS, NH3 - N in treated water is 100mg/L, 70mg/L and lJmg/L respectively.