上庄河污染河水原位生物修复试验  

An in situ remediation test for polluted water in the Shangzhuang River

作　　者：褚淑祎[1] 陈小敏 潘国武 肖继波[1] 

机构地区：[1]浙江农林大学环境与资源学院,浙江临安311300 [2]浙江省温州市龙湾区温瑞塘河管理委员会,浙江温州325000

出　　处：《浙江农林大学学报》2014年第1期105-110,共6页Journal of Zhejiang A&F University

基　　金：国家水体污染控制与治理重大科技专项(2008ZX07101-006-08);浙江省重大科技专项(2009C03006-3);浙江省温州市招投标项目(F-GB 2011061301 19;Z100602217)

摘　　要：采用渔网、浮水植物（李氏禾Leersia hexandr,粉绿狐尾藻Myriophyllum aquaticum）和生物漂带构建软隔离区,结合人工增氧对浙江省温州市上庄河经雨水管排放污水进行原位处理.结果表明：污水化学需氧量、氨氮、总氮和总磷分别为100.20～178.80,10.50～17.89,12.15～21.47和2.19～3.17 mg·L-1,处理后主体河段溶解氧、化学需氧量和总磷平均为5.50,34.3和0.29 mg·L-1,达GB 3838-2002《地表水环境质量标准》之V类水标准;氨氮和总氮平均为3.41和4.43 mg·L-1.软隔离区内氮的去除主要为植物吸收氨氮,氨氮和总氮的平均去除率达70.26％和71.41％,曝气区好氧微生物的硝化作用使氨氮和总氮进一步下降20.51％和5.74％;总磷的去除主要通过软隔离区内植物的吸收作用和曝气区微生物的同化作用,原位修复处理后总磷平均降至0.29 mg·L-1,去除率达88.1％.The objective of this work is to find a feasible approach for in situ remediation of main sources of river pollution. An isolated research area constructed of fishing nets, floating plants(Leersia hexandra, and Myriophyllum aquaticum), and biological belts coupled with artificial aeration was used for in situ remediation of sewage from rainwater pipes in the Shangzhuang River, Zhejiang Province. Water samples were collected every day and analyzed for water quality properties including dissolved oxygen(DO), chemical oxygen demand(COD), ammonium nitrogen(NH4-N), total nitrogen(TN), and total phosphorus(TP) over a 100-day period. Results showed that when sewage concentrations were COD(100.20-178.80 mg·L-1), NH4-N(10.50-17.89 mg·L-1), TN(12.15-21.47 mg·L-1), and TP(2.19-3.17 mg·L-1), average after-treatment concentrations(in mg·L-1) for the main section dropped to DO of 5.50, COD of 34.3, and TP of 0.29, which were the fifth class for the national surface water quality standard; whereas NH4-N was 3.41 mg·L-1and TN was 4.43 mg·L-1. In the isolated research area, floating plants were directly responsible for N losses due to uptake of NH4-N with the removal efficiencies of NH4-N reaching 70.26% and TN being 71.41%. However, in the aerated field, N loss was mainly attributed to nitrification of bacteria, which accounted for 20.51% removal of NH4-N and 5.74% removal of TN; uptake of floating plants and assimilation of bacteria removed TP with concentrations dropping to 0.29 mg·L-1and removal efficiency reaching 88.1%. Thus, the isolated area constructed of fishing nets, floating plants, and biological belts coupled with artificial aeration could be an alternative for in situ remediation of main sources of river pollution. [Ch, 6 fig. 16 ref.]

关 键 词：生态学 上庄河 污染河水 原位生物修复 李氏禾 粉绿狐尾藻 

分 类 号：X703.1[环境科学与工程—环境工程] X173