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Study on Pretreatment Technology before Ultrafiltration of Yangtze River Raw Water

Xu Lanzhen

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Abstract

The short purification process with submerged ultrafiltration membrane technology as the core was used in the reconstruction of Lujing Waterworks in Nantong City.The influence of pretreatment of Yangtze River raw water with flocculant on the subsequent ultrafiltration process was investigated.The results show that adding coagulant into the raw water can effectively delay the increase of transmembrane pressure(TMP),thus prolonging the filtration cycle.PAC is better than PFS in delaying the increase of TMP.

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What this paper is about

The short purification process with submerged ultrafiltration membrane technology as the core was used in the reconstruction of Lujing Waterworks in Nantong City.The influence of pretreatment of Yangtze River raw water with flocculant on the subsequent ultrafiltration process was investigated.The results show that adding coagulant into the raw water can effectively delay the increase of transmembrane pressure(TMP),thus prolonging the filtration cycle.PAC is better than PFS in delaying the increase of TMP.

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Available abstract

The short purification process with submerged ultrafiltration membrane technology as the core was used in the reconstruction of Lujing Waterworks in Nantong City.The influence of pretreatment of Yangtze River raw water with flocculant on the subsequent ultrafiltration process was investigated.The results show that adding coagulant into the raw water can effectively delay the increase of transmembrane pressure(TMP),thus prolonging the filtration cycle.PAC is better than PFS in delaying the increase of TMP.

Key concepts: Ultrafiltration (renal), Raw water, Filtration (mathematics), Yangtze river, Flocculation, Raw material, Environmental science, Environmental engineering

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