A method for reducing the content of soluble impurities in wastewater by utilizing a gas-liquid impact mixing reaction system

A technology of reaction system and impurity content, applied in chemical instruments and methods, water/sewage treatment, biological water/sewage treatment, etc., to achieve the effects of easy popularization and application, fast update speed, and no secondary pollution

Active Publication Date: 2020-01-24
湖南西林环保材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the existing treatment of COD, BOD, S 2- The defective that the method that etc. polluted waste water treatment exists, the object of the present invention is to provide a kind of simple, low-cost, efficient reduction COD, BOD, ammonia nitrogen, S 2- The method of equal impurity content, the method has no secondary pollution, the device is simple, and can be used on a large scale

Method used

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  • A method for reducing the content of soluble impurities in wastewater by utilizing a gas-liquid impact mixing reaction system

Examples

Experimental program
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Effect test

Embodiment 1

[0032] This embodiment adopts a gas-liquid impact mixing reaction system, using air as the main raw material, specifically including the following steps:

[0033] (1) Introduce the waste water to be treated with a COD content of 1100mg / L into the circulation pipeline, turn on the circulating water pump, and make the waste water to be treated (flow rate about 10m 3 / h, the flow rate is about 2m / s) through the liquid impact tube and spray down into the circulating liquid storage tank, so that the cycle is carried out;

[0034] (2) Determine the required air volume of about 5000m 3 / h, the flow rate is about 12m / s;

[0035] (3) Turn on the blower and blow the clean natural air that has been dedusted into the circulating fluid storage tank from the blowing branch pipe;

[0036] (4) Adjust the air flow to 5000m 3 / h or so, so that the air and the waste water to be treated form a turbulent flow zone (foam reaction zone) within a certain range of the gas-liquid contact interface, ...

Embodiment 2

[0039] This embodiment adopts a gas-liquid impact mixing reaction system, with air and ozone as the main raw materials, specifically including the following steps:

[0040] (1) will S 2- The waste water to be treated with a content of 15mg / L is introduced into the circulation pipeline, and the circulating water pump is turned on to make the waste water to be treated (flow rate about 10m 3 / h, the flow rate is about 2m / s) is sprayed downwards into the circulating liquid storage tank through the liquid impact tube, and the sprayed wastewater returns to the circulating liquid storage tank after reaction, and the cycle is carried out like this;

[0041] (2) Determine the required air volume of about 5000m 3 / h, the flow rate is about 12m / s;

[0042] (3) Turn on the blower and the ozone generating device, and blow the air containing about 0.5% ozone into the circulating fluid storage tank from the blowing branch pipe;

[0043] (4) Adjust the air flow to 5000m 3 / h or so, so tha...

Embodiment 3

[0046] This embodiment adopts a gas-liquid impact mixing reaction system, using air as the main raw material, specifically including the following steps:

[0047] (1) Set the BOD content to 950mg / L and S 2- Content is 9.5mg / L waste water to be treated is introduced in the circulation pipe, and sodium hypochlorite (about 0.5%) is added in the water tank. Turn on the circulating water pump to make the waste water to be treated (flow rate about 10m 3 / h, the flow rate is about 2m / s) is sprayed downwards into the circulating liquid storage tank through the liquid impact tube, and the sprayed wastewater returns to the circulating liquid storage tank after reaction, and the cycle is carried out like this;

[0048] (2) Turn on the blower and blow the clean natural air that has been dedusted into the circulating fluid storage tank from the blowing branch pipe;

[0049] (3) Adjust the air flow to 5000m 3 / h, the flow rate is about 10m / s, so that the air and the waste water to be tre...

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Abstract

The invention discloses a method for reducing the content of soluble impurities in waste water by using an air-liquid impact mixing reaction system. The air-liquid impact mixing reaction system is used for treating waste water containing COD, BOD, ammonia-nitrogen, S<2-> and other impurities; the reaction system comprises a circulation solution storage case, a liquid impact tube, an air blowpipe, a circulating water pump, an air supplying device, etc.; the circulating water pump and the air supplying device are started, and the waste water is introduced from a water inlet and ejected from the lower end of the liquid impact tube at a high speed and impacts a baffle plate; air or ozone-containing air is ejected from a branch air blowpipe at a high speed and impacts the baffle plate; a foam reaction zone is formed due to high-speed impact mixing of the air and the liquid; reacted clear water flows into an overflow groove and is discharged from a water outlet; and reacted gases are directly discharged from a gas outlet. The method is easy, low in cost, capable of highly efficiently reducing the contents of COD, BOD, ammonia-nitrogen, S<2-> and other impurities in the waste water, free of secondary pollution, simple in used devices and suitable for large-scale application.

Description

technical field [0001] The invention relates to a method for purifying impurities in wastewater, in particular to a method for efficiently removing COD, BOD, ammonia nitrogen, S 2- The method for equal pollutant content belongs to the technical field of waste water treatment. Background technique [0002] Chemical oxygen demand (COD), biochemical oxygen demand (BOD), ammonia nitrogen, S 2- Pollutants such as desulfurization and other pollutants are one of the pollutants that cause water pollution, such as desulfurization wastewater from coal-fired power plants, resulting in decline or even deterioration of water quality, affecting the environment and water safety. [0003] At present, the methods for removing COD and other pollutants in wastewater are mainly aeration method, chemical method and electrochemical method, etc. The main disadvantage of aeration method is that the removal efficiency of COD and other pollutants is low, which affects energy consumption and removal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/74C02F1/76C02F1/78C02F3/34
CPCC02F1/72C02F1/722C02F1/74C02F1/76C02F1/78C02F3/34
Inventor 王平山王定华傅湘龙成小玲
Owner 湖南西林环保材料有限公司
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