【摘要】：電鍍行業(yè)作為當(dāng)今地球上三大污染工業(yè)之一,對人類的生存環(huán)境和身體健康造成了很大的危害,電鍍產(chǎn)業(yè)園的建立可以整合各中小電鍍企業(yè),通過集中“收集—管理—治理”能夠有效地解決電鍍行業(yè)對環(huán)境所造成的污染問題。同時隨著電鍍產(chǎn)業(yè)的不斷發(fā)展,排放量變大且成分也愈加復(fù)雜,環(huán)保政策日趨嚴(yán)格,廢水的污染問題已經(jīng)嚴(yán)重制約了我國電鍍企業(yè)自身的生存和發(fā)展。所以,對綜合電鍍廢水的處理技術(shù)和運行研究尤為必要。本文主要以某電鍍產(chǎn)業(yè)園的電鍍廢水為研究對象,掌握每個鍍種的生產(chǎn)工藝及廢水產(chǎn)生來源,對廢水采取分類收集、分質(zhì)處理的原則的進行治理,其中各類含重金屬離子廢水采用離子交換法吸附去除,之后采取不同的措施回收相應(yīng)重金屬;對于一般脫脂廢水和染色廢水采用氧化和氣浮絮凝法處理;對于乳化脫脂廢水采用電解法和氣浮絮凝法處理;酸鋅廢水和酸堿廢水采用氣浮絮凝法去除;含氰廢水采用兩級氧化處理;焦銅廢水采取氯化銅破絡(luò)去除;以上經(jīng)過預(yù)處理的各類廢水進行匯集,經(jīng)過絮凝沉淀池和CASS池進一步的處理。通過對產(chǎn)業(yè)園污水處理站的運行調(diào)試,并對運行期間處理效果進行分析,可以得到:對于各種重金屬的處理去除率達到了99%以上;廢水的出水平均COD去除率達到91.1%;廢水的出水平均TP去除率達到98.9%;廢水的出水平均氨氮去除率為89.6%。出水達到《電鍍污染物排放標(biāo)準(zhǔn)》(GB21900-2008)表三特別排放標(biāo)準(zhǔn)。對于廢水產(chǎn)生的各類污泥采用板框壓濾機和疊螺機脫水,泥餅外運至有資質(zhì)的單位處置。
[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.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X781.1

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