文档介绍：学号:
毕业设计
( 届)
题目: 某生物工程有限公司
工业用酶制剂废水处理工艺设计
学生:
学院(系): 专业班级:
校内指导教师: 专业技术职务:
校外指导老师: 专业技术职务:
摘要:本设计为某酶制剂废水处理设计。设计程度为初步设计。酶制剂废水水质的主要特点是含有大量的有机物,属高浓度有机废水,故其生化需氧量也较大。该酶制剂废水的处理水量为1000m3/d,不考虑远期发展。原污水中各项指标为: COD浓度为15000mg/L,SS浓度为500mg/L,氨氮浓度为20 mg/L。要求处理后的排放水要严格达到国家三级排放标准。
经分析知该处理水质属易生物降解又无明显毒性的废水,可采用两级生物处理以使出水达标。一级处理主要采用物理法,用来去除污水中的悬浮物质和无机物。二级处理主要采用生物法,包括厌氧生物处理法中的UASB法和好氧生物处理法中的SBR法,可有效去除污水中的BOD、COD。
整个工艺具有总投资少,处理效果好,工艺简单,占地面积省,运行稳定,能耗少的优点。
关键词:酶制剂废水处理高浓度有机废水 UASB法 SBR法
Abstract:This design is one enzyme preparation water treatment. The degree of the design is in a preliminary phase. The main distinguishing feature of the enzyme preparation waste water is that it contains the anic matters, so it belongs to the high anic waste water, therefore its biochemical oxygen demand is also high.
The water which needs to treatment in the treatment plant is 1000, regardless of the specified future development. Various target in the raw waste water is: the concentration of COD is 15000mg/L, the concentration of SS is 500mg/L, the concentration of ammonia is 200mg/L. The wastewater could be treated to meet the third level of the national discharge standard.
After the analysis, the quality of this processing water belongs to the waste water that easy biology degrade and not have the obvious poison, could use two levels of biological treatments to treat the water. First level o