raw wastewater

It was most advantageous to the coagulation that made the raw influent wastewater acidify 20 hours.

对猪场废水酸化20h对混凝最为有利.

After adding no-digested piggery wastewater ( raw wastewater) to digested piggery wastewater in the influent, the reactor performance was significantly improved with COD removal higher than 80% and NH~+_4-N removal up to 99%.

在猪场废水厌氧消化液中添加部分未经厌氧消化的猪场废水（原水），处理系统的处理效率明显提高，COD去除率高于80%，出水COD降到250~350mg/L；

Discussions concentrated primarily on the fundamental condition and influencing factors of WWTP design, such as the ingredient and flow of raw wastewater and effluent, sewer systems and planned age.

首先对污水处理厂设计基本条件及影响因素，如进出水水质、水量、管网系统及规划年限等进行了分析；

Jar test for color removal of printing and dyeing wastewater with iron particle showed that main factor connecting with color removal are raw wastewater pH, dosage ratio of iron to water, reaction time, aeration, raw wastewater color and type of dye.

铁屑静态烧杯脱色实验表明，影响脱色的主要因素有：废水pH值、铁水投配比、反应时间、曝气、原水色度和染料种类。

The results showed that the denitrification capability of the BSAS process was better than SCAS process, due to enhancement of adsorbing measure, and let the return sludge mixed with raw wastewater under anaerobic condition for less than 30 min.

结果表明，后者具有更好的脱氮能力。BSAS工艺采用强化吸附手段让回流污泥与原水在缺氧条件下混合（30min），促进贮存物质的积累，加速内源反硝化作用。