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畜禽粪水已成为上海市郊的主要污染源。利用畜禽粪水与沼液作蔬菜地下渗灌施肥,有灌溉、施肥、污水处理、防止土壤次生盐渍化、不占地、节肥省本、生产洁净蔬菜等综合功能。研究了畜禽粪水与沼液蔬菜渗灌施肥的基本条件(CODcr<2000mg/L)、管材管径(DN55mm)、间距(2m左右)、深度(0.40m)、滤材(砻糠)及厚度(0.05m)、有压渗灌等成套应用技术,渗灌增产20.9±7.3%,增收19656.0±996元人民币/hm2·a,土壤自净去除率CODcr为88.0±5.0%,排放水CODcr为130.5±65.8mg/L,对地面水、地下水基本无影响。故经济、环境、社会、生态效益俱优。
Livestock and poultry manure has become a major source of pollution in the suburbs of Shanghai. The use of livestock and poultry manure and biogas slurry for underground infiltration of fertilizers, irrigation, fertilization, sewage treatment to prevent soil secondary salinization, does not occupy, saving the province, the production of clean vegetables and other integrated functions. The basic conditions (CODcr <2000mg / L), pipe diameter (DN55mm), spacing (about 2m), depth (0.40m) (0.05m) and complete set of applied technologies such as pressure seepage irrigation. The infiltration irrigation increased production by 20.9 ± 7.3% and increased income by 19656.0 ± 996 RMB / hm2 · a. Soil self-purification removal rate CODcr was 88. 0 ± 5.0%, CODcr of discharged water was 130.5 ± 65.8mg / L, which had no effect on surface water and groundwater. Therefore, economic, environmental, social, ecological benefits are all excellent.