Water treatment method and device for reducing membrane pollution
A water treatment and membrane pollution technology, applied in water/sewage treatment, water/sludge/sewage treatment, permeation/dialysis water/sewage treatment, etc., to simplify the structure, reduce the equipment footprint, and high promotion and application value Effect
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Embodiment 1
[0027] A device for water treatment method for reducing membrane fouling, such as figure 1 As shown, the device includes a coagulation tank 1 and a filter device 2; the top of the coagulation tank 1 is provided with a coagulant inlet and a potential adjustment port 17, an agitator 14 is provided inside, and a water inlet pipe 11 and a first discharge pipe are connected at the bottom. The empty pipe 13 is connected with the water outlet pipe 12 on the side wall; the filter device 2 is connected with the other end of the water outlet pipe 12, and the bottom is connected with the second emptying pipe 23, and a membrane module 21 is arranged inside, and the clear liquid outlet of the membrane module 21 is connected with the filter The filtrate outlet 22 of the device 2 is connected, and the membrane hole in the membrane module 21 is 30nm;
[0028] Wherein, the coagulant inlet is communicated with the coagulant medicine box 16 for adding coagulant to the coagulation tank 1;
[002...
Embodiment 2
[0037] Utilize the device among the embodiment 1 to carry out water treatment, wherein the membrane module 21 in the filtration layer device is replaced into the membrane module that membrane hole is 60nm, and specific method comprises the following steps:
[0038] Pass into the water to be treated (the river water in the embodiment 1) in the coagulation tank 1 by water inlet pipe 11, when the liquid level in the coagulation tank 1 reaches the position of 2 / 3 of the height of the coagulation tank 1, stop feeding to the coagulation tank 1 Feed into the water to be treated in the coagulation tank 1, then add ferric chloride to the water to be treated for coagulation according to the addition of 5 mg / L through the coagulant medicine box 16, and control the coagulation by adjusting the rotating speed of the agitator 14 and the coagulation time. When the particle size meter 15 shows that the particle size of the coagulated particles reaches 180nm, slowly add NaOH solution to the coa...
Embodiment 3
[0041] Utilize the device among the embodiment 1 to carry out water treatment, wherein the membrane module 21 in the filtration layer device is replaced into the membrane module that membrane hole is 80nm, and specific method comprises the following steps:
[0042] In the coagulation tank 1, feed water to be treated (river water in embodiment 1) through the water inlet pipe 11, and when the liquid level in the coagulation tank 1 reached the position of 2 / 3 of the coagulation tank 1 height, stop feeding to the coagulation tank 1 Pass into the water to be treated in the coagulation tank 1, then add PAC (polyaluminium chloride) to the water to be treated by the coagulant medicine box 16 according to the addition of 10mg / L to carry out coagulation, by adjusting the rotating speed and mixing speed of the agitator 14 The coagulation time controls the particle size of the coagulation particles. When the particle size meter 15 shows that the particle size of the coagulation particles r...
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