Wuhan Liangzihu Water Plant is the first large-scale flat-emergency dual-purpose water plant in China.It takes plain lakes as its water source,with emergency water supply scale of 500 000 m3/d and daily water supply scale of 200 000 m3/d.Dual membrane technology is also a-dopted in the water purification process.The pilot test results show that for raw water character-ized by low turbidity,high organic and seasonal high algae,the use of precipitation-O3-BAC-UF-partial NF process,effluent water quality is good,stable operation.O3-BAC can effectively allevi-ate NF membrane organic pollution,and UF has a good control of turbidity,both of which have a positive effect on the overall stable operation of the process.Based on the pilot test results,Liangz-ihu Water plant carried out the process design,in which the scale of NF is 100 000 m3/d,CODMn can be maintained at about 1.5 mg/L under daily working conditions,and can be kept within 3 mg/L under emergency conditions.Carbon dioxide is added to the raw water to reduce the residual alumi-num content and control possible UF membrane contamination.
关键词
城市平急两用水厂/超滤/纳滤/中试
Key words
Urban daily-emergency dual use water plant/Ultrafiltration/Nanofiltration/Pilot
维普
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