Pretreatment device applying magnetic coagulation to reuse water of printed circuit board wastewater
A printed circuit board and pretreatment device technology, which is applied in water/sewage treatment, water/sewage multi-stage treatment, water/sewage treatment equipment, etc., can solve the problem of inability to treat fine particles of wastewater, insufficient treatment, and affecting water quality, etc. question
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[0017] see figure 1 , the present invention provides a technical solution: a magnetic coagulation applied to printed circuit board wastewater reuse water pretreatment device, including a wastewater storage tank 1, the left end of the wastewater storage tank 1 is fixed with a raw water inflow pipe 2, the main reaction mechanism as follows:
[0018]
[0019] Since the flocculant PAC does not only interact with PO during the dosing reaction 4 3- It reacts, and also reacts with the alkalinity in water to form Al(OH) 3 , causing a lot of waste of medicine. Therefore, a reflux reaction system is added to the magnetic flocculation system to re-react the wasted chemicals, which can greatly save the cost of chemicals.
[0020] The reaction mechanism of saving the trial dose of medicine is as follows:
[0021]
[0022] In addition to the main phosphorus removal reaction when adding PAC, a part of the flocculation reaction occurs. The mechanism of the flocculation reaction is rel
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