乳制品公司液态奶废水处理工艺综述
[摘要]由于乳制品废水含有乳蛋白、碳水化合物等多种有机物,废水的可生化性较好,但生物降解较慢,所需处理时间比较长,且在污水处理中,易在各阶段产生不同的臭气。乳制品废水作为典型的工业废水,若未经处理或处理不当直接排入水体势必对环境造成危害,因此废水须经处理达标排放。目前国内对乳制品废水的处理主要以好氧工艺为主,但一般达不到出水水质的要求。本项目以某液态奶废水处理工程为例,介绍了调节——水解酸化——厌氧——反硝化——接触氧化——BAF 工艺的应用。
[关键词]乳制品废水;发展进程;处理工艺
Methods Review of Dairy Companyrsquo;s Liquid Milk Wastewater
Abstract:As dairy wastewater contains a variety of organic compounds such as milk protein and carbohydrate, it has good biodegradability but slow biodegradation and requires a long time of treatment. In addition, in sewage treatment, it is easy to produce different odor at each stage.Dairy wastewater, as a typical industrial wastewater, is bound to cause harm to the environment if it is discharged into the water body without treatment or improper treatment.At present, the treatment of dairy wastewater mainly by aerobic process, but generally can not meet the requirements of effluent quality.Taking a liquid milk wastewater treatment project as an example, this project introduces the application of regulating - hydrolytic acidification - anaerobic - denitrification - contact oxidation - BAF process.
Keywords: Dairy wastewater; research progress; treatment technology
1前言
近年来,随着人民生活水平的提高,乳制品已经成为人们生活中的必需品,其种类已经从传统的牛奶、奶粉、奶酪扩展到免疫奶等技术含量较高的乳制品,在乳制品工业迅速发展的同时,其废水的排放量也在逐年增加。据统计,2012年我国乳制品年产量达2289万t,是1995年产量的43倍,在乳制品加工生产过程中,尤以生产液态奶的废水产生量居多。乳制品废水作为典型的工业废水,若未经处理或处理不当直接排入水体势必对环境造成危害,因此废水须经处理达标排放。
2乳制品废水的分布特点
以上是毕业论文文献综述,课题毕业论文、任务书、外文翻译、程序设计、图纸设计等资料可联系客服协助查找。