Filter back washing water recovery processing method and membrane filtration system thereof
A technology for backwashing water and recycling treatment, which is applied in the directions of water/sewage multi-stage treatment, light water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of water quality safety, risk, impact load, etc., and achieve Effects of reducing water purification load, stabilizing water quality, and improving water quality safety
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[0022] The present invention is described below in conjunction with embodiment:
[0023] The method for recovering and treating backwash water in a filter tank of the present invention includes A: a pretreatment process, B: a membrane filtration process, and C: a disinfection process.
[0024] The A: The purpose of the pretreatment process is to remove particulate matter and reduce the load of pollutants entering subsequent units. It can be used in both batch recovery and continuous recovery. The more commonly used methods are sedimentation, micro-sand assisted sedimentation or air flotation. The pretreatment process can be used alone, but when the sedimentation effect is not good when used alone, a coagulant can be added during the pretreatment, the purpose of which is to help improve the separation effect. It has been proved that the proper application of pretreatment can obtain satisfactory turbidity and particle removal rate, including two insects. The preferred coagulan...
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