Sewage treatment system and sewage treatment method
A sewage treatment system and sewage treatment method technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of appropriate dosing, small particles, and difficulty in overcoming sedimentation and other issues to achieve the effect of improving efficiency
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Embodiment 1
[0021] Example 1 Sewage treatment system
[0022] Such as figure 1 As shown, the sewage treatment system consists of a flocculation tank and a sedimentation tank.
[0023] The flocculation tank is as follows: the upper end of the tank body I (1) is provided with a sewage inlet (2) and a reaction water outlet (3), and one end of the sewage inlet (2) in the tank body I (1) is provided with 3 baffles Ⅰ(4) in turn divides the pool body (1) into chamber I(5), chamber II(6), chamber III(7) and chamber IV(8), and the upper end of chamber I(5) is provided with a sodium hydroxide inlet (9), the upper end of chamber II (6) or chamber III (7) is provided with calcium chloride inlet (10), the upper end of chamber IV (8) is provided with aluminum chloride inlet (11), and chamber IV (8) is provided with Stirring device (12).
[0024] Described settling tank is: the upper end of pond body II (13) is provided with reaction water inlet (14), and reaction water inlet (14) one end is provided...
Embodiment 2
[0026] Embodiment 2 sewage treatment method
[0027] Adopt the sewage treatment system of embodiment 1, method is as follows:
[0028] 1. Flocculation treatment: The sewage enters the flocculation tank through the sewage inlet (2), enters the chamber IV (8) through the chamber I (5), chamber II (6) and chamber III (7) in turn, and enters the chamber IV (8) through the sodium hydroxide inlet (9 ) into sodium hydroxide to adjust the pH to be 8-9, send into 20% calcium chloride aqueous solution by weight percentage through calcium chloride inlet (10), produce foamy, in chamber IV (8), through aluminum chloride The inlet (11) is fed with 10% aluminum chloride aqueous solution by weight, stirred to produce a large amount of flocculent matter, and the reaction water containing the flocculent matter is sent into the sedimentation tank through the reaction water outlet (3).
[0029] 2. Sedimentation treatment: the reaction water containing flocculated substances enters the pool body ...
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