The decoloration method of the effluent from bleaching and washing plants is primarily studied by reduction with reductants.

采用还原脱色法对制浆中段废水的脱色进行了初步研究。

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Because of complex component, high load of pollutant and large sewage capacity, the washing and bleaching effluent of straw pulp has become the focus in pollution controlling.

麦草浆造纸中段废水成分复杂，污染物负荷高，在造纸废水中占有较大的比重，是污染治理的重点。

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The ultimate measure for decreasing discharge amount and chroma of washing & bleaching effluent of pulping is to adopt newtechnologies in water conservation and pollution control.

降低制浆中段废水的排放量和色度的根本性措施是采用节水减污新技术。

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