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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 facilities and high operating costs in the treatment process, which greatly increases the cost of environmental treatment for enterprises and causes waste of resources.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0018] Add the dry fly ash and straw powder into the concentrate, and keep stirring until a viscous mixture is formed, so that the water content is less than 85%; the mixture is sent to the drying dehydration equipment, so that the water content in the mixture is reduced to below 5% , to form solid powder, condense and collect the removed water, and send it to the factory sewage treatment system for up-to-standard treatment before discharge or reuse. The produced solid powder is made into solid granules by extrusion granulation machine, bagged and transported to a qualified unit for incineration.

Embodiment 2

[0020] An organic waste liquid containing ammonium sulfate, the waste liquid is the raffinate after recycling ammonium sulfate through 2 distillations, the COD is 1.23 million mg / L, the ammonia nitrogen is 34,000 mg / L, and the pH is 3.3, which is normal by the third party test solid waste.

[0021] Add calcium oxide to the stirred tank that has been put into the waste liquid, keep stirring, and a large amount of ammonia is released. When the pH is greater than 7 and no ammonia is released, stop adding calcium oxide. Ammonium sulfate is collected and ammonium sulfate is generated, and this part of the collected liquid is sent back to the ammonium sulfate production system of the factory through pipelines to realize the recycling of ammonia. Mix the waste liquid with neutral pH after deamination, dry fly ash and straw powder to form a viscous semi-fluid dynamic mixture with a water content of about 45%. The mixture is transported to the drying and dehydration equipment to make t...

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PUM

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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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