1000td线路板废水处理工程设计.doc
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- 1000 td 线路板 废水处理 工程设计
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1、摘要本毕业设计的课题是1000吨/日线路板废水处理工艺设计,各类进水水质状况如下:有机废水CODCr=1800mg/L,SS=900mg/L,流量为120 m3/d;含络合物的废水CODCr=300mg/L,Cu=50mg/L,流量为 180m3/d;含铜离子废水Cu2+=80mg/L,CODCr=300mg/L,流量为 640m3/d;含氰化物废水CN=100-200mg/L,CODCr=250mg/L,流量为60m3/d。处理后出水达到广东省地方标准水污染物排放限值(DB44/26-2001)二时段一级标准,即pH=6-9;CODCr=90mg/L;SS=20mg/L;Cu2+=0.5mg
2、 /L;CN=0.3mg/L。线路板生产废水,以重金属铜离子污染为主,废水种类复杂,PH变化大,应先分别收集,单独预处理后再集中处理。络合物的处理用化学置换法,但条件许可的话也可用稀释混合法,这样可节约药剂,降低成本。有机物废液经酸化中和反应后,流入调节池,再进行混凝沉淀处理。线路板废水的污泥含有铜等贵重金属,可回收变废为宝。针对线路板废水的这些特点,本设计采用分类处理的物化沉淀为主工艺处理线路板废水。该方法具有工艺简单,处理效果好,构造简单,便于操作和维护等优点,是处理线路板废水的理想工艺,经过处理后的出水各项指标均达到广东省水污染物排放限值一级标准。关键词:线路板废水,分类处理,预处理,物
3、化沉淀AbstractThe lesson of this graduate design is the process design for 1000 ton/day circuit pl- ank wastewater.The quality of the influent organic wastewater is: CODCr=1800 mg/L,SS=900 mg/L,Q=120 m3/d; The quality of the influent wastewater that contain chel- ated copper is: CODCr=300mg/L,Cu=50mg/L
4、,Q= 180m3/d;The quality of the influentwastewater that contain copper ion is: Cu2+=80mg/L,CODCr=300mg/L,Q=640m3/d.Thequality of the influent wastewater that contain cyanide is:CN=100-200mg/L,CODCr=250mg/L, Q=60m3/d. As a result, the quality of the discharged water can meet theGuangdong province emis
5、sion limits of municipal sewage and B emission standardlimits .The quality of the effluent water is: pH=6-9;CODCr=90mg/L;SS=20mg/L;Cu2+=0.5mg /L;CN=0.3mg/L. The circuit plank manufacturing waste water, which heavy metals copper ions pollution is main,its composition is complicate and its PH varies v
6、ery big. Should be collected separately after pretreatment centralized. Handling complex chemical replacement, if the conditions permit, the dilution mixing method could also be used, such savings Pharmacy, reduce costs. Acidification by organic waste and in response and then regulate the inflow poo
7、l and then coagulation treatment. PCB wastewater sludge containing copper and other precious metals, recyclable waste to treasure. According to these characteristicseses of the circuit plank waste water, this design adopts the mathod that classification handles and precipitation handles for the main
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