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Nan Wei, Yunhong Shi, Guangxue Wu, Hongying Hu, Yihui Wu and Hui Wen
Tertiary denitrification of the secondary effluent in wastewater treatment plants is necessary to control the eutrophication of receiving water bodies. Two denitrifying biofilters (DNBF), one packed with quart sand with sizes of 2?4 mm (DNBFS) and the ot...
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