Studied on the Treatment Technology of the Cow Wastewater Jian Fangling,Hou Yanhui,Liu Hui (Zhongkai Environment Science and Technology Research Centre,Guangzhou 510225) Liu Guangtuan (The Animal Group Company of Guangdong Province,Guangzhou 510640). Abstract:The treatment technology of the wastewater from the cow farm was studied in this paper.It showed that by means of the coagulator JF-1,CODcr of the water coagulated fell from 2010mg/L to 563mg/L-691mg/L,NH3-N fell from 70mg/L to 25mg/L~33mg/L, CM fell from 180 degree to 40~70 degree.The technology of the coagulation-aerobic biological treatment was the good,because its not only satisfied with the drainage standards of the state,but also its technology was simple,the cost of the project and working were low and management was easy. Key words:cow wastewater,coagulation,aerobic biological treatment 1 前言 奶牛在进食时排放的粪便大多用于牧草施肥;在运动时排放的粪便被直接回收,用于水产养殖;而在挤奶时排放的粪便则用水冲洗,以便保证挤奶间的清洁卫生[1~3]。其排放的废水中CODcr、NH3-N含量高,对环境污染严重,需进一步处理才能达标排放[3~6]。目前,由于处理工艺落后,处理效果不理想,离达标排放还有相当一段距离。为了提高奶牛场废水处理效果,使之达标排放,我们根据实地调查、试验研究和以前的实践经验[3~8],对奶牛场废水的处理工艺进行了研究,现将试验结果报告如下。 2 材料与方法 2.1 试验材料 试验废水:取自广东某奶牛场未经处理的原废水,其理化性质见表1。 表1 奶牛场废水理化性质 |