Method for treating etherifying phenol-contained wastewater
A treatment method and technology for phenol wastewater, applied in chemical instruments and methods, water/sewage multi-stage treatment, extraction water/sewage treatment, etc. Effect
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Embodiment 1
[0019] Add 600kg of aviation kerosene, 100kg of isobutyl ketone, 100kg of N,N-dimethylacetamide and 200kg of n-octanol into the reactor, stir and pack for later use. At 30°C, add 100ml of etherified phenol-containing wastewater with a volatile phenol concentration of 6000mg / L and a chemical oxygen demand concentration of 50000mg / L into a 250ml reaction bottle, adjust the pH to 2-3 with hydrochloric acid, and add 50ml of the prepared Complex extraction agent-PN, after fully stirring, pour it into a separatory funnel, and let it stand to separate layers. The extracted lower layer etherified phenolic waste water was separated out, and the measured volatile phenol was 105 mg / l and COD was 1142 mg / l. Adjust the pH value of etherified phenol-containing wastewater to 6-9, and then carry out biochemical and other treatment processes to meet the discharge standards. Add the remaining extraction agent from the layering in the extraction test to a 250ml reaction bottle, add 30ml of 10% ...
Embodiment 2
[0021] Add 800kg of aviation kerosene, 10kg of isobutyl ketone, 10kg of N,N-dimethylacetamide and 180kg of n-octanol into the reactor, stir and pack for later use. At 40°C, add 100ml of etherified phenol-containing wastewater with a volatile phenol concentration of 6000mg / L and a chemical oxygen demand concentration of 50000mg / L into a 250ml reaction bottle, adjust the pH to 2-3 with hydrochloric acid, and add 80ml of complex extraction Agent-PN, after fully stirring, pour into a separatory funnel, and let stand to separate layers. The etherified phenolic wastewater extracted from the lower layer was separated, and the measured volatile phenol was 95mg / l and COD was 987mg / l. Adjust the pH value of etherified phenol-containing wastewater to 6-9, and then carry out biochemical and other treatment processes to meet the discharge standards. Add the remaining extraction agent from the layering in the extraction test into a 250ml reaction bottle, add 30ml of 25% by mass sodium hydr...
Embodiment 3
[0023] Add 750kg of aviation kerosene, 50kg of isobutyl ketone, 50kg of N,N-dimethylacetamide and 150kg of n-octanol into the reactor, stir and pack for later use. At 50°C, add 100ml of etherified phenol-containing wastewater with a volatile phenol concentration of 6000mg / L and a chemical oxygen demand concentration of 50000mg / L into a 250ml reaction bottle, adjust the pH to 2-3 with hydrochloric acid, and add 100ml of complex extraction Agent-PN, after fully stirring, pour into a separatory funnel, and let stand to separate layers. The etherified phenolic wastewater extracted from the lower layer was separated, and the measured volatile phenol was 92mg / l and COD was 989mg / l. Adjust the pH value of etherified phenol-containing wastewater to 6-9, and then carry out biochemical and other treatment processes to meet the discharge standards. Add the remaining extraction agent from the layering in the extraction test into a 250ml reaction bottle, add 30ml of 30% by mass sodium hyd...
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