Treatment device for phenolic resin production wastewater

Abstract

The invention relates to a treatment device for phenolic resin production wastewater. The treatment device comprises a regulating tank, a catalytic condensation tank, an extraction tank, a neutralizing tank, an advanced oxidation tank, an anaerobic tank, an aerobic tank, a quick sand filter tank and a clear water tank, wherein the catalytic condensation tank comprises a mixing and stirring zone and a solid accumulation zone, a catalytic condensation tank water inlet pipe is arranged at the bottom of the mixing and stirring zone, a phosphoric acid addition gauge and a formaldehyde addition gauge are arranged at the middle-upper part, and a stirrer is arranged in the middle of the mixing and stirring zone; the extraction tank comprises an extraction stirring zone and an extraction separationzone, and an extraction tank inlet is formed in the bottom of the extraction stirring zone and communicated with a catalytic condensation tank water outlet pipe; the neutralizing tank is equipped with an alkali liquor addition gauge; the advanced oxidation tank comprises an aeration oxidation zone and a sedimentation zone, and an ozone aeration disc is arranged at the bottom of the aeration oxidation zone; the anaerobic tank comprises a facultative zone, an anoxic zone and an anaerobic zone separated by baffles; the aerobic tank is equipped with a water distribution cone and an oxygen measurement regulator; the quick sand filter tank comprises a water distribution zone, a sand washing zone and a sand filter zone.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment device for waste water from phenolic resin production. Background technique [0002] There are two main sources of phenolic resin wastewater, one part is the water produced during the condensation process of phenol and aldehyde, and the other part is about 63% of the water contained in the raw material formaldehyde. Phenolic resin wastewater usually has the following characteristics: (1) complex composition and high chemical oxygen demand; (2) many highly toxic substances; (3) poor biodegradability. If the wastewater with high concentration of phenolic resin is discharged directly without treatment, the impact on the environment will be huge and far-reaching. The degradation and treatment of high-concentration phenolic resin wastewater has attracted widespread attention from various countries. For example, the US National Environmental Protection Age...

AI Technical Summary

Problems solved by technology

From the perspective of comprehensive management, it is difficult to achieve stable, reliable, safe and economical purposes for the treated wastewater by using any treatment method alone.

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