A kind of sapphire wafer polishing waste liquid sewage treatment method
A sewage treatment method and sapphire wafer technology, which are applied in the fields of energy wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problem of slow natural water removal, secondary environmental pollution, and acid pollution. and other problems, to achieve the effect of prolonging the period of sludge cleaning, obvious direct economic benefits, and reducing organic matter components
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Embodiment 1
[0028] Collect the flushing sewage from washing the machine tool and the ground and introduce it into the adjustment pool, adjust the ratio of sapphire wafer polishing waste water to flushing sewage in the adjustment pool at a ratio of 1:15, until the pH is 8-9, and the flocculant 1 is selectively polymerized Aluminum chloride is configured as a 0.5% aqueous solution and stored in a flocculant tank. The average treatment water volume of sapphire wafer polishing waste water is 5t / h, SS is 6800mg / L, and the addition amount of flocculant 1 aqueous solution is 5Kg / h, ( The amount of flocculant 1 added is about 10mg / Kg sewage), after mixing in the mixer, it enters the mechanical acceleration clarifier, and the flocculant 2 selects polyacrylamide, which is configured as a 0.5% aqueous solution and stored in the flocculant tank. The addition amount of the agent 2 aqueous solution is 10Kg / h, (the addition amount of the flocculant 2 is about 20mg / Kg sewage), and the flocculant reacts wi...
Embodiment 2
[0032]Collect the washing water from washing the machine tool and the ground and introduce it into the adjustment pool, and adjust it according to the ratio of sapphire wafer polishing waste water to washing water at a ratio of 1:20 in the adjustment pool until the pH is 8-9, and the flocculant 1 is selectively polymerized Aluminum chloride is configured as a 0.5% aqueous solution and stored in a flocculant tank. The average treatment water volume of sapphire wafer polishing waste water is 5t / h, SS is 6800mg / L, and the addition amount of flocculant 1 aqueous solution is 5Kg / h, ( The amount of flocculant 1 added is about 10mg / Kg sewage), after mixing in the mixer, it enters the mechanical acceleration clarifier, flocculant 2 selects polyacrylamide with a solid molecular weight of 14 million, configures it into a 0.2% aqueous solution, and stores In the flocculant tank, the addition amount of the flocculant 2 aqueous solution is 7.5Kg / h, (the addition amount of the flocculant 2 i...
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