Device for improving water purification efficiency of ultra-filtration membrane by performing pre-treatment of activating persulphate by ferrous ions and application method thereof
A technology for activating persulfate and ferrous ions, used in chemical instruments and methods, oxidized water/sewage treatment, water/sewage treatment, etc. Contaminant removal and other issues, to achieve the effect of improving water purification efficiency, easy operation, and enhanced removal
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specific Embodiment approach 1
[0024] Specific implementation mode one: combine figure 1 Describe this embodiment, the device of ferrous ion activated persulfate pretreatment in this embodiment to improve the water purification performance of ultrafiltration membrane consists of raw water pipeline 6, ferrous ion dosing device 1, persulfate dosing device 2, oxidation mixing Condensation reaction tank 3, sedimentation tank 4 and ultrafiltration membrane module 5; said raw water pipeline 6 is provided with ferrous ion dosing device 1 and persulfate dosing device 2 in sequence along the water flow direction, and said raw water pipeline The outlet of 6 is connected with the water inlet of the oxidative coagulation reaction tank 3, the water outlet of the oxidative coagulation reaction tank 3 is connected with the water inlet of the sedimentation tank 4, and the water outlet of the sedimentation tank 4 is connected with the ultrafiltration The water inlets of the membrane modules 5 are connected to each other.
specific Embodiment approach 2
[0025] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the water inlet of the sedimentation tank 4 is set at the lower part of the sedimentation tank 4 , and the water outlet of the sedimentation tank 4 is set at the upper part of the sedimentation tank 4 . Others are the same as the first embodiment.
specific Embodiment approach 3
[0026] Specific embodiment 3: The difference between this embodiment and specific embodiment 1 or 2 is that the sedimentation tank 4 is a flat flow sedimentation tank, an inclined tube sedimentation tank, an inclined plate sedimentation tank or a high-density sedimentation tank. Others are the same as those in Embodiment 1 or 2.
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