某电镀产业园污水处理站调试与运行研究

发布时间：2018-07-15 08:26

【摘要】：电镀行业作为当今地球上三大污染工业之一,对人类的生存环境和身体健康造成了很大的危害,电镀产业园的建立可以整合各中小电镀企业,通过集中“收集—管理—治理”能够有效地解决电镀行业对环境所造成的污染问题。同时随着电镀产业的不断发展,排放量变大且成分也愈加复杂,环保政策日趋严格,废水的污染问题已经严重制约了我国电镀企业自身的生存和发展。所以,对综合电镀废水的处理技术和运行研究尤为必要。本文主要以某电镀产业园的电镀废水为研究对象,掌握每个镀种的生产工艺及废水产生来源,对废水采取分类收集、分质处理的原则的进行治理,其中各类含重金属离子废水采用离子交换法吸附去除,之后采取不同的措施回收相应重金属;对于一般脱脂废水和染色废水采用氧化和气浮絮凝法处理;对于乳化脱脂废水采用电解法和气浮絮凝法处理;酸锌废水和酸碱废水采用气浮絮凝法去除;含氰废水采用两级氧化处理;焦铜废水采取氯化铜破络去除;以上经过预处理的各类废水进行汇集,经过絮凝沉淀池和CASS池进一步的处理。通过对产业园污水处理站的运行调试,并对运行期间处理效果进行分析,可以得到:对于各种重金属的处理去除率达到了99%以上;废水的出水平均COD去除率达到91.1%;废水的出水平均TP去除率达到98.9%;废水的出水平均氨氮去除率为89.6%。出水达到《电镀污染物排放标准》(GB21900-2008)表三特别排放标准。对于废水产生的各类污泥采用板框压滤机和叠螺机脱水,泥饼外运至有资质的单位处置。
[Abstract]:The electroplating industry, as one of the three major polluting industries on the earth today, has caused great harm to the living environment and health of human beings. The establishment of electroplating industry parks can integrate the small and medium-sized electroplating enterprises. Centralized collection-management-treatment can effectively solve the environmental pollution caused by electroplating industry. At the same time, with the continuous development of electroplating industry, the emissions become larger and more complex, environmental protection policies become more and more strict, the pollution of wastewater has seriously restricted the survival and development of electroplating enterprises in China. Therefore, it is necessary to study the treatment technology and operation of comprehensive electroplating wastewater. In this paper, the electroplating wastewater of a certain electroplating industry park is taken as the research object, the production process of each plating seed and the source of the waste water are grasped, and the waste water is treated by the principle of classified collection and quality treatment. The wastewater containing heavy metal ions is removed by ion exchange method, and different measures are taken to recover the corresponding heavy metals, and the general degreasing wastewater and dyeing wastewater are treated by oxidation and floatation flocculation. The emulsifying and degreasing wastewater was treated by electrolysis and floatation flocculation, zinc acid wastewater and acid-base wastewater were removed by air floatation flocculation method, cyanide wastewater was treated by two-stage oxidation, copper caramel wastewater was removed by cupric chloride. All kinds of pre-treated wastewater were collected and further treated by flocculation sedimentation tank and Cass tank. Through debugging the sewage treatment station in Industrial Park and analyzing the effect of treatment during operation, it can be concluded that the removal rate of heavy metals is over 99%; The average COD removal rate of effluent was 91.1%, the average TP removal rate of wastewater was 98.9%, and the average ammonia nitrogen removal rate of effluent was 89.66%. The effluent reaches the special discharge standard of table 3 (GB 21900-2008). The sludge produced by waste water is dewatered by plate and frame filter press and screw folding machine, and the mud cake is transported to a qualified unit for disposal.
【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X781.1

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