The large quantity of toxic and harmful sewage with complex components and high density, which is discharged in the course of the coal gas production, is a kind of hard-treated industrial sewage.
在煤气生产过程中排出大量有毒有害污水，其水量大、成分复杂、浓度高，是一种很难处理的工业污水。
The used wastewater contains soluble organic matters, suspended solids, inorganic substances, etc. , that it can only be discharged after being treated and meeting the drainage requirements.
使用过的生活污水中含有可溶性有机物质、悬浮物、无机物等，需经污水处理达标后才能排放。
Treated wastewater is then treated according to normal water treatment technique to remove COD, and discharged.
降解处理后的废水最后用常规水处理技术去除COD后排放。
The feces discharged by large scale pig farm were sold and used by themselves as organic fertilizer, and the waste water treated by traditional anaerobic fermentation process.
规模化猪场的粪渣主要作为有机肥外卖或自用处理，而污水主要采用传统厌氧发酵工艺处理。
The liquid sludge water discharged from waterworks has to be treated. The sludge discharge of waterworks could be divided into two parts: the liquid sludge water and the solid dry sludge.
实施自来水厂排泥水处理，首先需要确定自来水厂的污泥量，就此将污泥量分为排泥水量和干污泥量。
The results show that the purity of molybdenum disulfide can be assured, useful elements can be recovered, and wastewater yielded during production can be discharged after being treated simply.
结果表明，二硫化钼的纯度可得到保证，而且有价元素可得到回收，生产过程中产生的废水经简单处理后可达标排放。
Reclamation of mixed treated wastewater discharged from iron and steel enterprises is an effective way to reduce water consumption.
钢铁企业外排综合废水的处理回用是降低吨钢耗新水量的有效途径。
Backwash water is either discharged to the sew or settled with the supernatant return to the front of the plant and the sludge treated in some acceptable manner.
反冲洗水排放到下水道或者沉淀，沉淀上清夜回到水厂前区且泥以某种可以接受的方式处理。
Oily wastewater with great capacity and complex component was hard to be treated, which would seriously polluted plants, soil, and water when it was discharged into environment.
含油废水水量大、水质复杂，难生物降解，进入环境对植物、土壤、水体等形成很严重的污染，被公认为难处理的工业废水。
Oily wastewater with great capacity and complex component was hard to be treated, which would seriously polluted plants, soil, and water when it was discharged into environment.
含油废水水量大、水质复杂，难生物降解，进入环境对植物、土壤、水体等形成很严重的污染，被公认为难处理的工业废水。
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