Cadmium wastewater treatment method
A treatment method and wastewater technology, applied in water/sewage treatment, biological water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problem that wastewater cannot effectively remove cadmium, and achieve a good effect of cadmium removal
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Embodiment 1
[0031] The present embodiment provides a kind of processing method of cadmium waste water, and described method comprises:
[0032] In this embodiment, waste water with a cadmium concentration of 550 mg / L and 800 mg / L is used as a sample for treatment:
[0033] 1. The cadmium wastewater enters the coarse screen and the fine screen to treat the residue;
[0034] In addition to heavy metal pollutants, wastewater also contains a large amount of solid dregs, nitrogen and phosphorus and other harmful substances. In order to avoid the influence of solid dregs and nitrogen and phosphorus during the cadmium removal process, the dross and nitrogen and phosphorus are removed through the grid before cadmium removal. ;
[0035] The dross is removed successively through the coarse screen and the fine screen, and then the cadmium wastewater enters the biochemical pool, and the activated sludge is used to remove COD, BOD, and BOD in the water 5 , SS and various forms of nitrogen and phosph...
Embodiment 2
[0044] Compared with Example 1, use double DTC modified chitosan and mushroom-based activated carbon adsorbent to adsorb cadmium synergistically; the addition of mushroom-based activated carbon adsorbent is 18mg / L.
[0045] Specifically, the present embodiment provides a treatment method for cadmium wastewater, the method comprising:
[0046] 1. Cadmium wastewater (cadmium content 800mg / L) enters the coarse screen and fine screen to treat the residue;
[0047] In addition to heavy metal pollutants, wastewater also contains a large amount of solid dregs, nitrogen and phosphorus and other harmful substances. In order to avoid the influence of solid dregs and nitrogen and phosphorus in the process of cadmium removal, the dregs and nitrogen and phosphorus should be removed before cadmium removal;
[0048] The dross is removed successively through the coarse screen and the fine screen, and then the cadmium wastewater enters the biochemical pool, and the activated sludge is used to ...
Embodiment 3
[0058] Compared with Example 2, the cadmium wastewater after using double DTC modified chitosan and mushroom-based activated carbon adsorbent to co-adsorb cadmium was added to the calcitropic Nodoc biofilm reactor.
[0059] Specifically, the present embodiment provides a treatment method for cadmium wastewater, the method comprising:
[0060] 1. Cadmium wastewater (cadmium content 800mg / L) enters the coarse screen and fine screen to treat the residue;
[0061] In addition to heavy metal pollutants, wastewater also contains a large amount of solid dregs, nitrogen and phosphorus and other harmful substances. In order to avoid the influence of solid dregs and nitrogen and phosphorus during the cadmium removal process, the dross and nitrogen and phosphorus are removed through the grid before cadmium removal. ;
[0062] The dross is removed successively through the coarse screen and the fine screen, and then the cadmium wastewater enters the biochemical pool, and the activated slu...
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Abstract
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