The utility model relates to a sewage treatment system of a pig farm, which is characterized in that the sewage treatment system comprises a grid catchment pool, a rotary micro-filter, a primary sedimentation pool, a pre-acidification regulating pool, a UASB anaerobic reaction pool, an A/O aerobic biochemical pool, a secondary sedimentation pool, a biological contact oxidation pool, a coagulation thickening pool and a decolorizing unit connected sequentially, and the UASB anaerobic reaction pool is described There are gas, solid and liquid three phase separators in the tank. Beneficial effect: * the utility model reduces the pollution load of pig farms daily discharged into the ground water body. The daily emissions of major pollutants were predicted to decrease by CODCr 2T, SS 1t. It can effectively improve the local ecological environment, improve the water environment quality of the regional watershed, realize the centralized control and treatment of pollutants, and greatly reduce the pollution load. The decolorization unit can significantly enhance the chroma index.
【技术实现步骤摘要】
养猪场的污水处理系统
本技术属于污水处理系统,尤其涉及一种养猪场的污水处理系统。
技术介绍
随着畜牧业的发展,畜产废水排放量日益增加,对农业生态环境和水体环境产生的负面影响也日益严重。养猪场污水主要是猪的排泄物(猪尿及部分猪粪)和猪舍冲洗水的混合物。据有关部门测算:一头猪日排泄粪尿按6kg计,年产粪尿达2.5t。一个千头猪场日排泄粪尿达6t,年排量达2500t。如果用水冲式清粪,一头猪日排污量约为200kg,年排污水达1万多吨。污水中悬浮物、有机物及氨氮含量均较高,其中五日生化需氧量BOD5介于600~7000mg/L,化学需氧量COD浓度可达13000~17000mg/L。目前,养猪场主要采用干清粪的工艺,部分采用水泡粪工艺,污水中猪粪的含量较高,悬浮物较高。废水种主要含粪便,饲料残渣高COD有机污染物和各类细菌。生化性能良好。日水量相对稳定,时变化系数较大。养猪场对工厂周围流域的水环境质量、水质影响极大,中厌氧池钢混结构池体阻力大;最终出水色度过高,感官效果差的不足,畜禽养殖业污染物排放标准(GB18596-2001)并未对养殖废水排放色度进行强制要求。但色度 ...
【技术保护点】
1.一种养猪场的污水处理系统,其特征是:包括依次连接的格栅集水池、旋转微滤机、初沉池、预酸化调节池、UASB厌氧反应池、A/O好氧生化池、二沉池、生物接触氧化池、混凝浓缩池及脱色单元,所述UASB厌氧反应池内设有气、固、液三相分离器。
【技术特征摘要】
1.一种养猪场的污水处理系统,其特征是:包括依次连接的格栅集水池、旋转微滤机、初沉池、预酸化调节池、UASB厌氧反应池、A/O好氧生化池、二沉池、生物接触氧化池、混凝浓缩池及脱色单元,所述UASB厌氧反应池内设有气、固、液三相分离器。2.根据权利要求1所述的养猪场的污水处理系统,其特征是:所述UASB厌氧反应池内壁设有环氧树脂加强防腐层。3.根据权利要求1所述...
【专利技术属性】
技术研发人员:王安民,席力蒙,张云程,
申请(专利权)人:金大地新能源天津集团股份有限公司,
类型:新型
国别省市:天津,12
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