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Method for treating waste water of 1,4-butanediol production

A technology for production wastewater and treatment method, applied in 1 field, can solve the problems of large floor space, insignificant treatment effect, and many control points, so as to ensure continuity and stability, avoid pollution of water sources or rivers, and be easy to manage and maintain. Effect

Inactive Publication Date: 2009-08-05
CHINA CHENGDA ENG +1
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Problems solved by technology

Its disadvantages are: first, the process is complicated, and there are many control points; second, the organic matter in the 1,4-butanediol production wastewater is basically a low-molecular chain substance, and the treatment effect in the anaerobic section and the anoxic section Not obvious; third, it occupies a large area and the one-time investment cost is high

Method used

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  • Method for treating waste water of 1,4-butanediol production

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Embodiment Construction

[0008] The waste water from 1,4-butanediol production first flows through the mechanical grille to remove large floating objects and larger particles, and then enters the regulating tank, where a submersible mixer is installed for continuous stirring to fully mix the raw water evenly. The waste water is sent to the SBR reactor through the lift pump for treatment, and a cycle is completed through aeration, sedimentation, decanting, and idle processes; in the aerobic aerobic stage, organic matter is degraded by aerobic microorganisms, and the DO concentration in this stage is controlled at 3- 4mg / L, the DO online monitor is interlocked with the frequency converter of the Roots blower to ensure the concentration of DO. The ORP online monitor is used to judge the redox capacity of the aerobic stage, that is, the processing capacity of the SBR reactor; During the idle period, the submersible mixer is automatically started to stir, and the anaerobic + anoxic reaction is performed, an...

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Abstract

A treatment method for 1,4-butanediol production wastewater, which belongs to the wastewater treatment method. The 1,4-butanediol production wastewater first flows through a mechanical grid to remove large floating objects, then enters a regulating tank, and passes through a submersible mixer. Stir evenly, send the wastewater into the SBR reactor through the lifting pump for treatment, and complete a cycle of aeration, sedimentation, decanting, and idle processes. When the concentration of the MLSS online monitor is greater than 8000mg / L, the hydraulic sludge discharge angle will be automatically opened When the concentration of MLSS is less than 4000mg / L, the sludge discharge angle valve will be automatically closed, the sludge will be removed by pressure filtration, the filter cake will be transported outside, the pressure filtration water will be returned to the adjustment tank for further processing, and the water will be discharged into the monitoring tank. Under the monitoring of the COD on-line monitor in the monitoring pool, if it reaches the national "Comprehensive Wastewater Discharge Standard" GB8978-1996 first-level discharge standard, it will be discharged, otherwise the monitoring pump will be automatically started and sent back to the adjustment pool for further treatment. The present invention can treat highly toxic, High-concentration organic wastewater, with small investment, quick results, stable effluent quality, easy management and operation, can fully realize automatic control.

Description

Technical field: [0001] The invention relates to a wastewater treatment method, in particular to a treatment method for 1,4-butanediol production wastewater. Background technique: [0002] The current popular technology is to set up pre-sedimentation tank + regulating tank + anaerobic tank + anoxic tank + aerobic tank + secondary sedimentation tank to treat 1,4-butanediol production wastewater. Its disadvantages are: first, the process is complicated, and there are many control points; second, the organic matter in the 1,4-butanediol production wastewater is basically a low-molecular chain substance, and the treatment effect in the anaerobic section and the anoxic section Not obvious; third, it occupies a large area and the one-time investment cost is high. Invention content: [0003] The object of the present invention is to provide a kind of treatment method of 1,4-butanediol production waste water, utilize this method to treat 1,4-butanediol production waste water toxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F3/30C02F1/66C02F11/12C02F103/36
Inventor 蒋晓明高云生金庆林杨昌力潘家兴
Owner CHINA CHENGDA ENG
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