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Method for treating sweet potato alcohol wastewater

A technology of alcohol wastewater and treatment methods, which is applied in natural water treatment, multi-stage water treatment, water/sewage treatment, etc., to achieve the effects of improving efficiency, reducing carbon emissions, and reducing treatment costs

Inactive Publication Date: 2017-05-24
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the problem of current sweet potato alcohol wastewater treatment method, the purpose of this invention is to seek the treatment method of the sweet potato alcohol wastewater that can be discharged up to the standard stably, it is characterized in that sweet potato alcohol wastewater is carried out liquid-solid separation, and the separated wastewater enters the adjustment tank, separates solid feed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: Treat 1m every day 3 Sweet potato alcohol wastewater (component: COD Cr 38500 mg / L, T-N42.2m / L, SS28000mg / L, T-P4.5mg / L, chromaticity 750), after liquid-solid separation, iron powder reduction (1h, 40℃, CO 2 Pressure 0.6MPa, adding iron powder 15g per liter of wastewater), anaerobic (pH8.5, 72h, 25℃~35℃), aerobic (4h) and biological filter tower (total thickness of porous ceramsite packing layer 1m, hydraulic load 50m 3 / m 2 .d) COD of effluent after treatment Cr It is 58mg / L, T-N7.2mg / L, T-P0.2mg / L, chromaticity 25.

Embodiment 2

[0008] Embodiment 2: Treat 5m every day 3 Sweet potato alcohol wastewater (component: COD Cr 40500 mg / L, T-N45.1m / L, SS31500mg / L, T-P4.2mg / L, chroma 780), after liquid-solid separation, iron powder reduction (2.5h, 25℃, CO 2 Pressure 0.1MPa, adding iron powder 5g per liter of wastewater), anaerobic (pH7.0, 24h, 35℃~55℃), aerobic (6h) and biological filter tower (total thickness of activated carbon packing layer 2m, hydraulic load 150m 3 / m 2 .d) COD of effluent after treatment Cr It is 62mg / L, T-N7.6mg / L, T-P0.2mg / L, chromaticity 27.

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Abstract

The invention discloses a method for treating sweet potato alcohol wastewater. The method comprises the steps of liquid-solid separation, iron powder reduction under the conditions of CO2 pressurization, anaerobic treatment, aerobic treatment and biofilter treatment and the like. The treated wastewater can stably meet the standard and be discharged.

Description

technical field [0001] The invention relates to a treatment method of sweet potato alcohol wastewater. Background technique [0002] Sweet potato is one of the main raw materials for the production of alcohol. The pollutant COD concentration in the organic wastewater produced by its production is high, the composition is complex, and the treatment is difficult. If the wastewater is not treated and directly discharged into the environment, it will cause serious pollution to the environment. At present, the treatment method of sweet potato alcohol wastewater is mainly biological treatment. Since sweet potato alcohol wastewater contains persistent organic pollutants (including benzene rings and (or) heterocyclic organic compounds), especially when fresh sweet potatoes are used as the main raw material, the concentration of persistent organic pollutants is high, resulting in biological treatment. It is difficult for sweet potato alcohol wastewater to be discharged stably. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/36C02F101/30
CPCC02F1/66C02F1/705C02F3/02C02F3/28C02F3/34C02F9/00C02F2001/007C02F2003/001C02F2003/003C02F2101/30C02F2103/36C02F2301/046C02F2301/08C02F2303/24
Inventor 龙炳清匡茜熹陈亚平
Owner SICHUAN NORMAL UNIVERSITY
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