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Treatment method of wastewater produced from C-D total solvent production

A technology for total solvent and waste water, which is applied in the field of treatment of waste water from the production of total solvent of acetonitrile, can solve the problems of high concentration and it is difficult to discharge the waste water stably up to the standard, and achieves the effects of avoiding pollution, obvious economic and environmental benefits, and improving efficiency.

Inactive Publication Date: 2017-05-17
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, chroma 720), after liquid-solid separation, iron-aluminum-zinc composite powder reduction (1h, 40℃, CO 2 Pressure 0.6MPa, adding iron-aluminum-zinc composite powder 15g per liter of wastewater), anaerobic (pH8.5, 72h, 25°C-35°C), 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 44mg / L, T-N5.3mg / L, T-P0.2mg / L, chromaticity 10.

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-aluminum-zinc composite powder reduction (2.5h, 25℃, CO 2 Pressure 0.1MPa, adding 5g of iron-aluminum-zinc composite powder 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 46mg / L, T-N5.0mg / L, T-P0.2mg / L, chromaticity 12.

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Abstract

The invention discloses a treatment method of wastewater produced from C-D total solvent production. The treatment method comprises the procedures of liquid-solid separation, CO2 pressurized iron-aluminum-zinc composite powder reduction, anaerobic treatment, aerobiotic treatment and biofiler treatment. The treated wastewater can be stably discharged up to the standard.

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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IPC IPC(8): C02F9/14C02F103/36C02F101/32
CPCC02F1/66C02F1/705C02F3/02C02F3/28C02F3/34C02F9/00C02F2003/001C02F2003/003C02F2101/322C02F2103/36C02F2301/046C02F2301/08Y02E50/30
Inventor 龙炳清张滔刘文
Owner SICHUAN NORMAL UNIVERSITY