水生植物滤床对猪场养殖废水的深度处理研究  

TERTIARY TREATMENT OF SWINE WASTEWATER USING AQUATIC PLANT FILTER BED

作　　者：董健[1,2] 刘超翔[1] 王振[1,2] 高春芳[1,2] 李鹏宇[3] 黄栩[1] 

机构地区：[1]中国科学院城市环境研究所,福建厦门361021 [2]中国科学院研究生院,北京100049 [3]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《水处理技术》2012年第9期54-58,共5页Technology of Water Treatment

基　　金：中国科学院知识创新工程重要方向项目(KZCX2-YW-451);福建省区域重大科技项目(2010N3004);厦门市科技计划项目(3502Z20112018)

摘　　要：为探究水生植物滤床系统深度处理畜禽废水的效能,采用水蕹菜作为滤床植物,在不同水力负荷下处理养猪场废水的二级出水。试验于温室内进行,控制进水COD和NH4+-N、TP的质量浓度分别为200 mg/L和120、10 mg/L,水力负荷分别为0.025、0.050、0.075m3/(m2.d),温度为25～30℃。经过3个月的连续运行,结果表明,在水力负荷0.025m3/(m2.d)时有最好的废水处理效果,对TN、TP、NH4+-N和COD的去除率分别达到39.7%、57.4%、67.9%和54.3%。其中,氮素的去除主要通过硝化-反硝化途径去除,植物吸收作用不及1%,而总磷的减少除了植物根系的截留作用,植物的同化作用也占有较大比重。水生植物滤床在合适的水力负荷下能够有效的深度净化猪场养殖废水,同时可利用水蕹菜回收部分氮磷,具有一定的经济效益。A laboratory scale aquatic plant filtery was used to treat the artificial secondary effluent of swine wastewater at different water loading. The system was planted with Ipomoea aquatica Forsk, the influent concentration of COD, and NH4＋-N, TP were controlled at 200 mg/L, and 100, 1Q mg/L under hydraulic loading rate （HLR） of 0.025, 0.050 and 0.075 m3/（m2od）. The experiment was conducted in the glasshouse with temperature controlled at 25-30 ℃. After 3 months＇ operation, the results above showed the effluent under 0.025 m3/（m2o d） had the lowest pollution content and the removal rate of TN, TP, NH4＋-N and COD were 39.7%, 57.4%, 67.9% and 54.3%, respectively. Nitrogen was removed mainly by nitrification-denitrification process, less than 1% content of nitrogen was absorbed by plant. However, the plant＇s absorption played an important role in removing phosphorus although the major pathway was still filtration. In all, that APFB could effectively purify the secondary effluent of swine wastewater under appropriate HLR, in addilion, a certain amount of nitrogen and phosphorus could be recycled through the growth oflpomoea aquatica Forsk, which may produce economic benefits.

关 键 词：水生植物滤床 养猪废水 水蕹菜 氮磷去除 

分 类 号：X703.1[环境科学与工程—环境工程] X712