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Method for treating phenol and cyanide wastewater produced by gas generation furnace

A technology of gas generator and treatment method, which is applied in biological water/sewage treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problem of unstable treatment effect of biochemical treatment method, large investment in coal-water slurry preparation system, Deal with high cost problems, achieve obvious economic and environmental benefits, avoid inhibition, and reduce pollution

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

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Problems solved by technology

The biochemical treatment method has unstable treatment effect and high cost; although the separate incineration method has a good treatment effect, the treatment cost is high; the coal-water slurry preparation system of the coal-water slurry treatment method has a large investment, and many manufacturers do not have this system, so it is difficult implement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Example 1: Treating 1m per day 3 Phenol cyanide wastewater (pH8.2, COD Cr 8500mg / L, volatile phenol 910mg / L, CN - 4.2mg / L, T-N115mg / L), reduced by iron-aluminum-manganese composite powder (add 5g of iron-aluminum-manganese composite powder per liter of wastewater, time 4h, 25℃, CO 2 Pressure 0.1MPa), hydrolysis acidification (24h, pH6.0), aerobic biochemical (12h) and activated carbon biological filter tower (hydraulic load is 40m 3 / m 2 .d. The total thickness of activated carbon is 2m). The effluent quality is COD Cr 72mg / L, CN - 0.12mg / L, volatile phenol 0.24mg / L, T-N17mg / L.

Embodiment 2

[0008] Example 2: Treating 20m per day 3 Phenol cyanide wastewater (pH8.3, COD Cr 8000mg / L, volatile phenol 860mg / L, CN - 3.9mg / L, T-N101mg / L), reduced by iron-aluminum-manganese composite powder (add 10g of iron-aluminum-manganese composite powder per liter of wastewater, time 2h, 45℃, CO 2 Pressure 0.3MPa), hydrolysis acidification (8h, pH8.0), aerobic biochemical (8h) and porous ceramsite biological filter tower (hydraulic load is 100m 3 / m 2 .d. The total thickness of porous ceramsite is 4m). The effluent quality is COD Cr 59mg / L, CN - 0.11mg / L, volatile phenol 0.18mg / L, T-N12mg / L.

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Abstract

The invention relates to a method for treating phenol and cyanide wastewater produced by a gas generation furnace. The method comprises the following steps of filtering, CO2 (carbon dioxide) pressurizing and reduction by iron, aluminum and manganese composite powder, settling, hydrolytic acidification, aeration, biological filter tower and the like. The method has the advantage that the treated wastewater can stably reach standard and then be drained.

Description

Technical field [0001] The invention relates to a method for treating phenol cyanide wastewater produced by a gasifier. Background technique [0002] Gas is a kind of fuel widely used in production and life. It is made from coal through a series of chemical reactions in the gas generator. In the process of preparing cold gas, phenol cyanide wastewater (waste water containing phenol and cyanide) will inevitably be produced. If the wastewater is directly discharged into the environment, it will cause serious pollution to the environment. The current treatment methods of phenol cyanide wastewater mainly include biochemical treatment methods, separate incineration methods, coal water slurry treatment methods, and raw materials mixed into drying towers. The treatment effect of the biochemical treatment method is unstable and the cost is high; although the treatment effect of the single incineration method is very good, the treatment cost is very high; the coal water slurry preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30C02F101/34C02F101/18
CPCC02F1/66C02F1/705C02F3/30C02F3/34C02F9/00C02F2001/007C02F2003/001C02F2003/003C02F2101/18C02F2101/345C02F2101/40C02F2301/046C02F2301/08
Inventor 龙炳清刘澜冯莎莎
Owner SICHUAN NORMAL UNIV
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