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Growth characteristics and sewage purifying effect of amphibious banyan in const ructed wetland Study on purification of nitrogen and phosphorous in Deyeuxia angustifolia simulated experiment in Sanjiang Plain,China Optimized adsorption of soil Cr (VI) by humic acid The Hydrolysis of Edible Gelatine and Formaldehyde-Removal Activity of It’s Hydrolysate Optimization of ultrafiltration technology for Xiangdan Injection Effects of sludge/soil ratio on the remediation of PAH-contaminated sludge by smooth bromegrass Nitrogen and phosphorus removal and N2O emission from domestic sewage in floating-bed plant systems