摘要
采用水解酸化池和两级复合生物滤池工艺处理盐化工工业废水。挂膜在启动29 d后成功。在水力负荷为0.37～0.74 m/h(不包括回流)、回流比为100%以及气水比为3∶1的条件下,COD、NH3-N、TN和SS的出水浓度(去除率)分别为78 mg/L(60%)、1.05 mg/L(93.4%)、18.9 mg/L(63.8%)和4.9 mg/L(94.5%),达到设计标准,实现了对盐化工工业废水的二级生物处理。装置具备一定的抗负荷能力,在实验范围内水力负荷(0.37～0.74 m/h)的增加有利于污染物的去除;通过工艺沿程水质记录,分析了COD、NH3-N、TN和SS在水解酸化区、一级缺氧/好氧区及二级缺氧/好氧区的贡献。
A hydrolysis acidification reactor and two-stage of combined biological filter （CBF） were used iq the treatment of salt chemical industrial wastewater. The start-up of the process succeeded after 29 days. Operating parameters were as follows ： hydraulic loading rate of 0.37 - 0.74 m/h （ not including backflow） , recirculation ratio of 100% and gas-water ratio of 3： 1. In terms of water quality, the average concentration and the removal efficiencies of COD, NH3-N, TN and SS were 78 mg/L （60%）, 1.05 mg/L （93.4%）, 18.9 mg/L （63.8 % ） and 4.9 mg/L （94.5 % ） , respectively, which met secondary biological treatment requirements of salt chemical industrial wastewater. This process was of higher resistance to loading, and the increasing of the hydraulic loading rate （0.37 -0.74 m/h） benefited the removal of pollutants. Based on the recording of the pollutant concentration along the process, removals of COD, NH3-N, TN and the SS were discussed in hydrolysis acidification area, first-stage anoxic/aerobie area and second-stage anoxic/aerobic area.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第4期1411-1416,共6页
Chinese Journal of Environmental Engineering
关键词
复合生物滤池
水解酸化脱氮
可生化性
盐化工工业废水
combined biological filter （CBF）
hydrolysis acidification
denitrogenation
biodegradability
salt chemical industrial wastewater
