High-concentration organic wastewater resource utilization method

An organic wastewater, high-concentration technology, applied in chemical instruments and methods, water pollutants, waste fuels, etc., can solve the problems of raising the cost of environmental treatment of enterprises, large investment in pollution treatment facilities, and high operating costs, and achieve equipment investment costs. The effect of reducing the cost of operation and treatment, reducing environmental risks, and preventing air pollution

Inactive Publication Date: 2019-04-05
南京馥安投资管理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The basic idea of ​​these technical routes is to treat high-concentration wastewater as pollutants, resulting in large investment in pollution control faciliti

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0016] Example 1

[0017] Organic waste liquid from a fine chemical plant, COD: 100,000 mg / L PH is neutral, and organic matter is mainly petroleum ether, phenol and other substances. The COD is concentrated to more than 400,000 mg by evaporative concentration, and the distillation condensate is discharged into the plant's biochemical system for processing.

[0018] Add the dried fly ash and straw powder to the concentrated solution and continue to stir until a viscous mixture is formed so that the water content is less than 85%; the mixture is transported to the drying and dehydration equipment to reduce the water content in the mixture to less than 5% , To form a solid powder, condense and collect the removed water, and send it to the factory sewage treatment system for treatment after reaching the standard for discharge or reuse. The prepared solid powder is made into solid particles with an extrusion granulator, and then packed in bags and transported to a qualified unit for in...

Example Embodiment

[0019] Example 2

[0020] An organic waste liquid containing ammonium sulfate. The waste liquid is the residual liquid after the ammonium sulfate is recovered through two distillations. The COD is 1.23 million mg / L, the ammonia nitrogen is 34,000 mg / L, and the pH is 3.3. Solid waste.

[0021] Add calcium oxide into the stirred tank that has been put into the waste liquid, continue to stir, and a large amount of ammonia will be released. When the PH is greater than 7 and no ammonia is released, stop adding calcium oxide. The ammonia is collected through the pipeline to the absorption tower, and dilute sulfuric acid is used. Collect and generate ammonium sulfate. This part of the collected liquid is sent back to the ammonium sulfate production system of the factory through a pipeline to realize the recycling of ammonia. Mix the waste liquid with neutral pH after deamination with dry fly ash and straw powder to form a viscous semi-fluid dynamic mixture with a water content of about 4...

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Abstract

The invention provides a high-concentration organic wastewater resource utilization method. High-concentration organic wastewater is combined to flyash, straw powder and the like to form solid granular fuel, organic matters in the wastewater is changed into fuel, resourceful utilization is realized, and energy conservation and consumption reduction are facilitated. Environmental risks are greatlyreduced, high-concentration organic wastewater is harmlessly changed into granular fuel, the possibility of leakage of concentrated wastewater in a delivering process is completely eradicated, and furthermore, atmospheric pollution caused by dust is prevented. Compared with wet type oxidation, supercritical and direct incineration, the high-concentration organic wastewater resource utilization method has the advantage that equipment investment and running treatment costs for production enterprises to treat the high-concentration wastewater are greatly reduced.

Description

technical field [0001] The invention belongs to the fields of environmental protection and chemical industry, and in particular relates to a resource utilization method of high-concentration organic wastewater. Background technique [0002] In the production process of fine chemical industry, high-concentration organic wastewater is often produced. For these wastewater, people have developed many solutions to control the pollution of organic wastewater. For the treatment of high-concentration organic wastewater, Fenton oxidation-precipitation-biochemical, incineration, wet oxidation-biochemical, supercritical-biochemical, precipitation-press filtration-landfill, electrocatalytic oxidation / ozone catalysis are usually used at present Oxidation - biochemical and other process routes, and there are already many successful cases available for inquiry. However, evaluating these means from the technical and economic aspects is not the most suitable for all high-concentration waste...

Claims

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Application Information

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IPC IPC(8): C10L5/46C02F9/10C02F101/30
CPCC02F1/04C02F1/281C02F1/285C02F1/66C02F9/00C02F2101/30C10L5/46Y02E50/10Y02E50/30
Inventor 吴孟德
Owner 南京馥安投资管理有限公司
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