通过杯罐试验研究了造纸中段废水混凝预处理的效能和影响因素。

The treatment efficiency and effect factors of coagulation pretreatment of bleaching wastewater from pulp making process was studied by jar test.

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通过实验室试验，全面考察了自然有机物对地下水化学氧化及混凝除铁的影响。

By experimenting in the laboratory, the effects of natural organic matter on both oxidative and coagulation removal of iron from groundwater were researched.

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通过大量的烧杯试验，对各种混凝剂的净水效果及经济价值进行比较，同时，也对混凝沉淀后滤后水做了一些研究。

Through a large number of beaker tests, we have compared their purifying effects and economic worth, and bioflocculation is better.

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