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Treatment method of acetone butanol and ethanol total solvent production wastewater

A total solvent and waste water technology, which is applied in the field of waste water treatment in the production of Bingding total solvent, can solve the problems of difficult discharge of waste water and high concentration, and achieve obvious economic and environmental benefits, avoid pollution, and reduce treatment costs.

Inactive Publication Date: 2017-05-31
SICHUAN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the waste water contains persistent organic pollutants (including benzene ring and (or) heterocyclic organic matter), especially when fresh sweet potatoes are used as the main raw material, the concentration of persistent organic pollutants is relatively high, resulting in biological treatment of the waste water. Wastewater is difficult to discharge stably

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: Treat 1m every day 3 Bingding total solvent wastewater (component: COD Cr 39000 mg / L, T-N40.8 mg / L, SS29000mg / L T-P4.2mg / L, chromaticity 720), 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 78mg / L, T-N6.8mg / L, T-P0.2mg / L, chromaticity 26.

Embodiment 2

[0008] Embodiment 2: Treat 5m every day 3 Bingding total solvent wastewater (component: COD Cr 41000 mg / L, T-N38.5mg / L, SS31500mg / L, T-P4.7mg / L, chroma 760), 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 81mg / L, T-N6.5mg / L, T-P0.2mg / L, chromaticity 27.

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Abstract

The invention provides a treatment method of acetone butanol and ethanol total solvent production wastewater. The method comprises work procedures of liquid-solid separation, CO2 pressurization iron powder reduction, anaerobic treatment, aerobic treatment, biological filtration tower treatment and the like; the treated wastewater can be stably discharged in a standard reaching manner.

Description

technical field [0001] The invention relates to a method for treating waste water produced by using sweet potato as the main raw material to produce the total solvent of acetin. Background technique [0002] Acetone, butanol, and ethanol are collectively referred to as the total solvent of acetone, which is an important raw material for medicine, pesticide, plastic, paint, national defense and light industry. In the early days, the total solvent of acetone was mainly produced from petroleum. In recent years, the use of biomass fermentation to produce acetin total solvent has become a development trend. Sweet potato is one of the main raw materials for the production of Bingding total solvent, and 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 environmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/36
CPCC02F1/66C02F1/705C02F3/02C02F3/28C02F3/34C02F9/00C02F2003/001C02F2003/003C02F2103/36C02F2301/046C02F2301/08C02F2303/24Y02E50/30
Inventor 龙炳清公培宝姜鹏飞
Owner SICHUAN NORMAL UNIVERSITY
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