含氰高浓度有机废水毕业设计

摘要：含氰高浓度有机废水在化工废水中占有一定比例，属难处理废水之一。该废水的企业主要以制药和印染企业居多，由于此废水对地表水污染十分严重，国家已明令严禁直接排放。氰乙酸甲酯是一种印染医药中间体，其生产废水成分复杂、有机物浓度高、废水中含有少量的氰化物的特点，通过对比论证，在使用 NaClO 氯化法破氰后，进一步采纳 UASB 厌氧处理和 BAF 好氧处理的组合工艺进行生化处理。经过工艺计算和经济核算，结果表明：系统工艺选择参数合理，操作简单，运行稳定，出水水质达到《污水综合排放标准》（GB8978-1996）的一级标准。关键词：氰化物 次氯酸钠 UASB BAFAbstract:High concentrations of organic waste water contained CN- holds some proportion in chemical waste water ， and its treatment progress is a difficulty in industrial waste water treatment. The pollution of this kind of waste water, which is in the majority charged by medicinal and textile industry enterprises, is extremely serious to surface water. As a result, the national public proclaim that this kind of waste strictly prohibited directly discharging.CNCH2COOCH3 is a kind of medicinal and textile intermedia , the waste water discharged by the production of CNCH2COOCH3 often contains a lot of compounds and always gets high organic density , it also contains certain concentration of cyanide .Being contrasted among some popular methods of chemical water treatment, the treatment craft that author chooses is :first, use NaClO to remove the CN- in the water, than pick the treatment of UASB, at last, use BAF treatment that the water passed by may reach the standard. Through craft computation and economic check, the author think chosen of the treatment is available. Water which is treated by the method can meet the sewage discharging standards.Key words: cyanide hypochlorous natrium UASB BAF目 录1．总论。。。。。。。。。。。。。。。。。。。。。。。...