摘要
对玉米深加工废水的二级处理出水进行了BAF+混凝淀联合工艺处理试验研究,得到最佳试验条件:水力负荷为0.5m^3/(m^2.h),容积负荷为2.37kg/(m^3.d),气水比为2.4:1,水温为20—25℃,滤料层高度为2.0m;PAC投加量为25mg/L,联合PAM投加量为0.5mgL。在最佳条件下,CODQ、TN、TP、SS去除率分别达到7613%、67.8%、90.6%、93.3%,处理出水符合《淀粉工业水污染物排放标准》(GB25461-L2010)的要求。
The experimental research on the treatment of wastewater from maize deep processing by biological aeration filter(BAF) combined with chemical coagulation process has been accomplished. The optimum conditions are as follows : hydraulic loading is 0.5 m^3/(m^2. h), volume loading 2.37 kg/(m^3. d), gas-water ratio 2.4:1, water temperature 20-25 ℃ ,filter media height 2.0 m;PAC dosing quantity 25 mg/L,and combined PAM dosing quantity 0.5 mg/L. Un- der the optimal conditions ,the removing rates of CODcr is 76.3% ,TN removing rate 67.8% ,TP removing rate 90.6% and SS removing rate 93.3%. The treated effluent meets the requirements of the Discharge Standard of Water Pollutants for Starch Industry (GB 2546182010).
出处
《工业水处理》
CAS
CSCD
北大核心
2013年第10期20-22,共3页
Industrial Water Treatment
基金
国家水体污染控制与治理科技重大专项(2009ZX07208-006-02)
关键词
玉米深加工废水
曝气生物滤池
混凝沉淀
maize deep processing wastewater
biological aeration filter
coagulation sedimentation