UC知道环境工程毕业设计摘要翻译
来源：百度知道 编辑：UC知道 时间：2024/06/16 14:54:12
钢铁工业炼焦工艺中产生大量酚氰废水，这种废水中含有高浓度的酚、氰化物、氨氮、油类等物质，COD高达2000mg/L以上，若直接排放，将会给环境造成极大的危害。目前，国内外大多数焦化厂酚氰废水采用好氧生化处理法，它具有处理量大、运行费用低，去除污染物效率高的优点。本设计根据废水中污染物的特性及排放要求，选取普通活性污泥法工艺。预处理阶段，采用重力隔油法和气浮法除去大量石油类物质。生化处理阶段，由于废水的COD含量较高，且含有氰化物等有毒物质，采用二段曝气法除去大量有机污染物，使废水达到《污水综合排放标准》(GB 8978－1996)三级排放标准。污泥处理阶段，采用重力浓缩池来降低污泥含水率，并通过污泥脱水间进一步处理，使得污泥含水率大大降低。
不要什么在线翻译的～～谢谢
In the iron and steel industry coking craft produces the massive phenol cyanogen waste water, in this kind of waste water includes the highly concentrated phenol, the cyanide, the ammonia nitrogen, materials and so on oil class, COD reaches as high as above 2000mg/L, if discharges directly, will cause the enormous harm to the environment. At present, the domestic and foreign majority coking plant phenol cyanogen waste water uses the oxygen biochemistry processing law, it has the process load to be big, the operating cost is low, elimination pollutant efficiency high merit. In this design basis waste water pollutant characteristic and emissions request, selection ordinary active sludge law craft. The pretreatment stage, uses the gravity to separate the oil law to float the law friendly except the massive petroleum class material. Biochemistry processing stage, because the waste water COD content is high, and includes the cyanide and so on toxic substance, uses two section of aeration