Method for treating phenolic wastewater in high-concentration hydrochloric acid
A treatment method and technology for phenolic wastewater, applied in water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult wastewater treatment, high operating cost, and complicated process, and achieve The effect of the treatment effect is stable
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[0027] Example 1
[0028] A chemical company generated in the production process wastewater ultraviolet absorbers, hydrochloric acid content of 20.5%, phenol content is 300mg / L, the method adopted for processing, particularly the processing steps are as follows:
[0029] Step 1): The waste water was heated to 70 ℃, thermostat,
[0030] Step 2): In the reaction kettle adding a phenol formaldehyde solution, 1.1 times the dosage of phenol waste water quality, sustained response 4H;
[0031] Step 3): The product of the reaction step after pressure filtration with a filter press.
[0032] Step 4): The filter press filtrate treatment using a resin column, the resin column height to diameter ratio of 10: 1, flow rate operation 1.5BV / h.
[0033] After this treatment method, the end of the effluent phenol content is 0.5 mg / L, content of 20.5% hydrochloric acid, hydrochloric acid may be recycled to the production reuse.
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[0034] Example 2
[0035] A chemical company generated in the production process wastewater ultraviolet absorbers, hydrochloric acid content of 20%, phenol content is 350mg / L, the method adopted for processing, particularly the processing steps are as follows:
[0036] Step 1): The waste water was heated to 70 ℃, thermostat,
[0037] Step 2): In the reaction kettle adding a phenol formaldehyde solution, 1.2 times the dosage of phenol waste water quality, sustained response 4H;
[0038] Step 3): The product of the reaction step after pressure filtration with a filter press.
[0039] Step 4): The filter press filtrate treatment using a resin column, the resin column height to diameter ratio of 10: 1, flow rate operation 1.5BV / h.
[0040] After this treatment method, the end of the effluent phenol content is 0.8 mg / L, content 20% hydrochloric acid, hydrochloric acid may be recycled to the production reuse.
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