Micro-electrolysis catalysis strengthening hydrolytic acidification reactor

Abstract

The invention provides a micro-electrolysis catalysis strengthening hydrolytic acidification reactor. The micro-electrolysis catalysis strengthening hydrolytic acidification reactor is characterized by comprising a water distribution and gas distribution area, a hydrolytic acidification area, a two-phase separation area and a catalysis strengthening micro-electrolysis area from the bottom up. The reactor provided by the invention is uniform in water distribution, uniform and controllable in gas distribution, unlikely to blockage and high in liquid and solid separation effect and shock load resistance, effectively improves the biodegradability of wastewater, and is suitable for treatment of recalcitrant sewage; trials show that the water inflow COD can be up to 50,000 mg / l, and the COD removal rate can reach 41%.

Description

technical field [0001] The invention belongs to the technical field of waste water treatment, in particular to a reactor for hydrolytic acidification and multi-metal catalytic micro-electrolysis. Background technique [0002] At present, due to the complex water quality and large volume of industrial wastewater, especially in textile printing and dyeing, metallurgical electroplating, papermaking and other industries; some wastewater COD>10000mg / L even contains some heavy metals and radioactive substances, if directly discharged, it will cause great pollution to surface water . [0003] Most industrial wastewater has low biodegradability. The traditional hydrolytic acidification biological method is used to pre-treat wastewater, which is helpful to improve the biodegradability of wastewater, but the treatment effect is limited. If multi-metal catalyzed micro-electrolysis is assisted, The divalent iron ions produced by micro-electrolysis are beneficial to the growth of hyd...

AI Technical Summary

Problems solved by technology

[0002] At present, due to the complex water quality and large volume of industrial wastewater, especially in textile printing and dyeing, metallurgical electroplating, papermaking and other industries; some wastewater COD>10000mg / L even contains some heavy metals and radioactive substances, if directly discharged, it will cause great pollution to surface water

[0003] Most industrial wastewater has low biodegradability. The traditional hydrolytic acidification biological method is used to pre-treat wastewater, which is helpful to improve the biodegradability of wastewater, but the treatment effect is limited. If multi-metal catalyzed micro-electrolysis is assisted, The divalent iron ions produced by micro-electrolysis are beneficial to the growth of hydrolytic acidification bacteria, and the hydrogen ions produced by hydrolytic acidification and the hydroxide ions produced by multi-metal catalyzed micro-electrolysis are neutralized to promote the reaction and make the possibility of macromolecular substance chain breaking Increase, so that the biodegradability of wastewater has been greatly improved, creating a good environment for the subsequent wastewater treatment process

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