Integrated vertical high-concentration sulfate wastewater treatment device

Abstract

The invention discloses an integrated vertical high-concentration sulfate wastewater treatment device. The device comprises a hydrolytic acidification reaction section, a hydrogen sulfide stripping section, a methanogenesis reaction section and a tank body, wherein the hydrolytic acidification reaction section is arranged at the lower section of the tank body, and includes a bottom water distribution pipe used for uniformly distributing high-concentration sulfate wastewater and a first filler layer used for providing a growth environment for sulfate reducing bacteria; the hydrogen sulfide stripping section is arranged at the middle section of the tank body and comprises a stripping pipeline and a gas collecting part; and the methanogenesis reaction section is arranged at the upper sectionof the tank body and comprises a second filler layer for providing a growth environment for methanogens and an effluent weir arranged along the circumference of the tank body. According to the invention, the anaerobic reaction is divided into the hydrolytic acidification reaction section and the methanogenesis reaction section, and the hydrogen sulfide stripping section is additionally arranged between the hydrolytic acidification reaction section and the methanogenesis reaction section, so that the inhibition effect of hydrogen sulfide on methanogens is weakened, the activity of the methanogens is guaranteed, and the treatment effect on high-concentration sulfate wastewater is improved.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an integrated vertical high-concentration sulfate wastewater treatment device. Background technique [0002] High-concentration sulfate wastewater mainly comes from two types of industrial production wastewater: one is mining wastewater containing sulfate; the other is wastewater discharged from fermentation, pharmaceuticals and light industries. The sulfate concentration contained in these waste water exceeds 1000mg / L, even reaches 5000mg / L. If it cannot be effectively removed, it will affect the biochemical treatment effect of the waste water on the one hand, and on the other hand, the sulfate discharged with the waste water will have a great impact on the environment, especially It will cause salinization of the land. [0003] The invention patent with application number CN201510027825.7 discloses a high-efficiency anaerobic reactor resistant to high-concentration sulfate ...

AI Technical Summary

Problems solved by technology

The sulfate concentration contained in these waste water exceeds 1000mg / L, even reaches 5000mg / L. If it cannot be effectively removed, it will affect the biochemical treatment effect of the waste water on the one hand, and on the other hand, the sulfate discharged with the waste water will have a great impact on the environment, especially cause land salinization

[0003] The invention patent with application number CN201510027825.7 discloses a high-efficiency anaerobic reactor resistant to high-concentration sulfate and its method for treating wastewater. The invention is a desulfurization jet anaerobic reactor combined with liquid internal circulation and gas external circulation. , its wastewater treatment process includes high-efficiency anaerobic reaction system, H 2 S removal system and return gas pipeline system, separated H 2 S is oxidized by complex iron into sulfur elemental resources for reuse, and H is removed 2 After the gas of S enters the reactor through the return air pipe, it can promote the H 2 The removal of S, the treated wastewater is discharged from the reactor through the outlet weir, and the stripping of hydrogen sulfide can be realized through the recycling of methane gas to improve the efficiency of anaerobic reaction, and at the same time, the resource recovery of elemental sulfur and methane gas can be realized; However, air aeration is adopted during the implementation of the invention, which easily introduces air into the reactor, which affects the effect of the anaerobic reaction, and the treatment facility of the invention occupies a large area and the process flow is relatively complicated

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