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Nowadays the speed of urbanization is fast in China. And the quantity of sewage discharged from cities and towns is increased year by year. When sewage is treated, a large number of complex components of sludge will be produced inevitably at the same time. If effective treatment is not taken up timely, it would became a direct or potential threat for environmental. In this article, we discuss several...
There are a lot of problems in designing the small towns' drainage pipelines. A reasonable selection of design velocity has really important practical significance. Through the discussion of theoretical analysis and engineering examples which is concluded that the limited design current velocity standard (5m/s) could be broken in small mountain towns when new type engineering plastics drainage pipelines...
Cassava starch industrial wastewater has some characteristics such as high concentration of organic pollutant, high concentration of suspended solids and low pH value etc. If the wastewater is treated by anaerobic process, it is necessary to choose reasonable methods of pretreatment among Coagulation and precipitation, flotation and hydrolysis acidification etc. Full hydrolysis acidification is the...
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