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Song W.-C.,Beijing University of Technology | Song W.-C.,Shandong Water and Wastewater Monitoring Center | Li X.,Beijing University of Technology | Jia R.-B.,Shandong Water and Wastewater Monitoring Center | And 2 more authors.
Beijing Gongye Daxue Xuebao/Journal of Beijing University of Technology | Year: 2015

To select the process for source water with organic micro-pollution, the annual changes of organic content, specific ultraviolet absorbance (SUVA), disinfection by products formation potential(DBPFP), molecular mass distribution, taste and odor were all analyzed in a micro-polluted reservoir, which took water from the downstream of the Yellow River. Results showed that the organic contents changed slightly throughout the year, and the average of oxygen consumption, UV254, DOC were 2.32 mg/L, 0.045 cm-1, 2.32 mg/L, respectively. However, the SUVA was higher; small organic molecules was the most, mainly to 70% of it (<3 ku); DBPFP was also higher, and THMs accounted for 94.6% of DBPFP, with CHCl3 accounted for 77%. The 2-methylisoborneol (2-MIB) concentration changed with season, which accorded to the alcohol content and metabolized by Cyanobacteria, such as Planktonema, Oscillatoria, etc. The organics characteristics of the reservoir water were associated with HRT of the process of sand setting, storage from the Yellow River and its sources of organic matters. Ozone biological activated carbon process was appropriate to be used for treatment. ©, 2015, Beijing University of Technology. All right reserved. Source


Song W.C.,Beijing University of Technology | Song W.C.,Shandong Water and Wastewater Monitoring Center | Li X.,Beijing University of Technology | Sun S.H.,Shandong Water and Wastewater Monitoring Center | And 2 more authors.
Journal of Residuals Science and Technology | Year: 2015

Sole use of polymeric aluminum ferric chloride (PAFC) and its combination with composite polymeric aluminum ferric chloride/poly-dimethyl-diallyl- ammonium chloride coagulant (PAFC-PDMDAAC), chlorine dioxide (ClO2) and composite potassium permanganate (PPC) were tested for treating retrieved water from the Yellow river during the period of low temperature and low turbidity. Such tests were carried out under full load operation in a water plant with conventional process. Results showed that the combined use of PPC and PAFC-PDMDAAC was more effective in treating influent with low temperature and low turbidity than the other coagulants. The turbidity, oxygen consumption, total trihalomethanes (THM) and absorbable organic halogens (AOX) in the effluent were compared with effluent under the sole treatment of PAFC, reduced by 76.8%, 14.2%, 60.8% and 19.4%, respectively. The operation cost, however, was only increased by 0.024 yuan/m3, denoting that it is a cost-effective method. © 2015 DEStech Publications, Inc. Source

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