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The biological purification device that combined the aeration-ship technology and biological contact oxidation was applied to the eutrophic river water treatment of Dongfeng channel in Zhengzhou. The removal efficiency of combined packing and elastic packing to chemical oxygen demand, NH3-N, TP in different dissolved oxygen (DO) and hydraulic loading showed that combined packing performance was better...
One of China largest river, Songhua River was polluted due to the explosion at a PetroChina factory in Jilin province in 2005. A full scale test was carried out to investigate the removal of nitrobenzene in the raw water from polluted Songhua River. The removal and control effects of nitrobenzene by using Powered Activated Carbon (PAC) absorption and Granular Activated Carbon (GAC) filtration as emergent...
Study on coagulation-microfiltration combination process for treatment of Luan river water was carried out. The experimental results showed that when the dosage of FeCl3 was 35 mg/L, the removal of turbidity was above 95%, the organic matter was above 50%, and recovery of membrane flux reached 81% for the combination process. On the other hand, among the four coagulants (FeCl3, Polymeric Ferric Sulfate,...
In order to reveal the effect of powdered activated carbon (PAC) pretreatment on Ultrafiltration (UF) membrane filtration performance, PAC-UF system treating Yangtze River water was studied. The results showed: 41.46% of UV254, 31.94% of CODMn, 38.44% of DOC, and 54.69% of THMFP were removed in the PAC-UF system. VHA and CHA could be removed effectively by PAC, which decreased risks of membrane fouling...
Nitrogen and phosphorus are the chief pollutants of our aquatic systems which may be resulted from different contamination sources and could cause serious environmental and ecological problems. Effective approaches for removing nitrogen and phosphorus from an aquatic system, particularly from surface water, is called for imminently. A new in-situ remediation measure of constructed floating islands...
Two different granular activated carbon (GAC) filters were utilized to investigate the removal efficiency of bromate and natural organic matters (NOM) during the transition from fresh GAC to the biological activated carbon (BAC). The removal efficiency of bromate, nitrate, UV254, DOC, and trihalomethane formation potential (THMFP) in GAC filter apparently decreased during the transition from fresh...
The Yellow River in China is being polluted with artificial pollution, which brings great challenges to drinking water treatment plants along the Yellow River. The conventional treatment processes could not ensure satisfactory quality of drinking water, and the innovative processes are crucial for the achievement of the newly issued drinking water standard (GB5749-2006).Ultra filtration (UF) technology...
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