A kind of resourceful utilization of coal chemical waste gas and waste water to prepare the method for sodium bisulfate
A technology of coal chemical wastewater and sodium bisulfate, which is applied in the direction of sulfate/bisulfate preparation, etc., to achieve the effect of saving energy and improving resource utilization rate
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specific Embodiment approach 1
[0029] Specific embodiment one: a kind of resource utilization of coal chemical industry waste gas and waste water of the present embodiment prepares the method for sodium bisulfate, and it is carried out according to the following steps:
[0030] 1. Regulating pool: the coal chemical industry wastewater is passed into the regulating pool to adjust the effluent water volume and stabilize the water quality;
[0031] 2. Passivation process: Calcium oxide, magnesium, sodium carbonate, coagulant and coagulant aid are added to the coal chemical wastewater. The dosage of the calcium oxide is 100-150 mg / L; the carbonic acid The dosage of sodium is 60-70mg / L; the dosage of the coagulant is 50mg / L-100mg / L; the dosage of the coagulant is 0.5-1.0mg / L; the dosage of the magnesium agent and SiO in coal chemical wastewater 3 2- The mass ratio is 12:1; among them, the hardness of the effluent is less than 50mg / L, and the silicon is less than 25mg / L;
[0032] 3. Multi-media filtration: pas...
specific Embodiment approach 3
[0061] Embodiment 3: This embodiment differs from Embodiment 1 in that the structure of the nanofiltration membrane includes a roll-type nanofiltration membrane, a disc tube-type nanofiltration membrane, or a vibrating membrane. Others are the same as in the first embodiment.
specific Embodiment approach 4
[0062] Embodiment 4: The difference between this embodiment and Embodiment 1 is that the coagulant described in step 2 is polyferric chloride or ferrous sulfate, and the coagulation aid is polyacrylamide. Others are the same as Embodiment 1. .
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