利用固液分离技术对规模化奶牛场的粪污治理

针对规模化奶牛场的粪污处理问题,利用了固液分离技术,对奶牛场内环境治理,尤其是圈舍内的清粪环节进行减量化改进。从技术角度上优化畜舍内的环境质量,从而弥补国内外现有畜禽养殖业中粪污治理模式中的弱项。本文以天津和润畜牧养殖有限责任公司的规模化奶牛场为试验点,对其产生的粪污进行技术化固液分离,分离后的固体粪便经发酵、晾晒后可作为奶牛的卧床垫料而重复利用。污水经稀释匀浆后储存于贮水池,在采用固液分离技术后,每天的产污水量下降了22%,粪污总量约下降21%。通过技术改进,固液分离处理后的粪污中,总悬浮颗粒物占比降低,污水中总氮和总磷含量降低,化学需氧量（COD）和生化需氧量（BOD）降低60%以上,水质得到提升。固液分离技术可为规模化养殖业提供更加便捷高效的处理粪污、降低污染物含量的产业化排污模式,使规模化养殖产品更加安全健康,同时也可以使人民的日常饮食得到安全保障。

Treatment of Manure in Large-Scale Dairy Farms with Solid-Liquid Separation Technology

Aiming at the problem of manure treatment in large-scale dairy farms, this project uses solid-liquid separation technology to reduce and improve the environmental management of the farm,especially the manure removal process in the pen. Optimize the environmental quality in the livestock house from a technical point of view, so as to make up for the weaknesses of the existing domestic and foreign livestock and poultry breeding industry manure treatment models. In this study, the Tianjin Herun Livestock Farm was used as a test site to carry out technical solid-liquid separation of the manure produced. The separated solid manure can be reused as a bed mattress for dairy cows after fermentation and drying. After the sewage is diluted and homogenized,it is stored in a storage tank. After the use of solid-liquid separation technology, the daily sewage production has been reduced by 22%,and the total amount of manure has been reduced by approximately 21%. Through technical improvements,the proportion of total suspended particulate matter in the manure after solid-liquid separation treatment is reduced,the total nitrogen and total phosphorus content in the sewage is reduced,COD and BOD are reduced by more than 60%, and the water quality is improved. The solid-liquid separation technology can provide a more convenient and efficient industrial sewage disposal mode for the large-scale aquaculture industry to treat manure and reduce the content of pollutants,so that the large-scale aquaculture products are safer and healthier,and it can also ensure the safety of the people's daily diet.