Dec 11, 2020 · The dissolved air flotation method is used to treat papermaking wastewater to achieve a closed cycle and solve a series of problems such as sludge, scale and slime mold produced in the process of wastewater circulation. The removal rate of CODcr, BOD5, and SS is 84.3%, 79.4%, 98%, and the effluent color is low, clear and transparent, and can be ...
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