Lead zinc ore dressing wastewater treatment device and treatment method
A technology of beneficiation wastewater and treatment device, applied in biological treatment device, water/sewage treatment, water treatment parameter control, etc., can solve the problems of poor treatment effect and high cost of lead-zinc beneficiation wastewater
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Embodiment 1
[0073] Introduce the lead-zinc ore dressing wastewater into the pretreatment reaction tank, stir at 100r / min, and expose CO 2 , the aeration rate is 0.3g / L wastewater, the aperture of the aerator is 1 μm, the aeration time is 1min, and the pH is adjusted to 9.5; after standing for 3h, the clear liquid enters the aerobic biological reaction tank 200.
[0074] Aerobic biological treatment reactor sludge load is 0.5kg COD Cr / (kg MLSS·d), air aeration adopts 8 groups Microporous aerator, service area 0.16m 2 / piece, its oxygen utilization rate is 20%; the aerobic biological reaction tank 200 stays for 10-12h, the biochemical index of the reactor is the same as that of the acclimation period, half of the water after biological treatment enters the ion exchange device for desalination after secondary precipitation .
[0075] The ion exchange device is filled with anion exchange resin, the resin volume is 80L, and the residence time is 30min. The biochemical effluent is rinsed ...
Embodiment 2
[0077] The pretreatment and biological treatment steps are the same as in Example 1. 90% of the biologically treated wastewater enters the ion exchange device for desalination, and the effluent from the ion exchange column is mixed with the remaining 10% biochemically treated effluent and used as mineral processing water.
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