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Method for treating organic matter in high-salinity industrial wastewater

An industrial wastewater, high salinity technology, applied in water/sewage treatment, neutralized water/sewage treatment, oxidized water/sewage treatment, etc. It can reduce the consumption of ozone, reduce the cost of wastewater treatment, and facilitate operation and maintenance.

Active Publication Date: 2018-06-19
SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This is mainly because the salt content greater than 2% will lead to an increase in the osmotic pressure of microbial cells, dehydration and fragmentation of microbial cells, inhibition of microbial growth and enzymatic action, thereby reducing the treatment effect on high-salinity wastewater
In addition, iron-carbon is also used to treat organic matter in high-salinity industrial wastewater, but it usually can only treat 50% of organic matter, and will produce a large amount of iron-carbon slag, forming secondary pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A method for treating organic matter in high-salinity industrial wastewater, comprising the following steps:

[0020] (1) The chloride ion concentration of the high-salinity industrial wastewater is between 80 and 100 g / L, the pH value is between 11 and 14, and the TOC content is lower than 110 mg / L (DB 31 / 199-2009 Comprehensive Wastewater Discharge Standard The required value for TOC is 20mg / L).

[0021] (2) Use hydrochloric acid to adjust the pH value of high-salinity industrial wastewater to 6.7.

[0022] (3) Use a peristaltic pump to continuously inject the pH-adjusted wastewater into an activated carbon column filled with 30g of coal-based activated carbon with a particle size of 1-5mm. The water inlet is equipped with a filter plate to filter the particulate matter in the wastewater, and the wastewater enters from the bottom of the activated carbon column for adsorption treatment; the high-salinity industrial wastewater stays in the activated carbon column for 90...

Embodiment 2

[0025] A method for treating organic matter in high-salinity industrial wastewater, comprising the following steps:

[0026] (1) The chloride ion concentration of the high-salinity industrial wastewater is between 80 and 100 g / L, the pH value is between 11 and 14, and the TOC content is lower than 110 mg / L (DB 31 / 199-2009 Comprehensive Wastewater Discharge Standard The required value for TOC is 20mg / L).

[0027] (2) Use hydrochloric acid to adjust the pH value of high-salinity industrial wastewater to 4.

[0028] (3) Use a peristaltic pump to continuously inject the pH-adjusted wastewater into an activated carbon column filled with 30g of coal-based activated carbon with a particle size of 1-5mm. The water inlet is equipped with a filter plate to filter the particulate matter in the wastewater, and the wastewater enters from the bottom of the activated carbon column for adsorption treatment; the high-salinity industrial wastewater stays in the activated carbon column for 130 ...

Embodiment 3

[0031] A method for treating organic matter in high-salinity industrial wastewater, comprising the following steps:

[0032] (1) (same as embodiment 1).

[0033] (2) Use hydrochloric acid to adjust the pH value of high-salinity industrial wastewater to 10.

[0034] (3) Use a peristaltic pump to continuously inject the pH-adjusted wastewater into an activated carbon column filled with 30g of coal-based activated carbon with a particle size of 1-5mm. The water inlet is equipped with a filter plate to filter the particulate matter in the wastewater, and the wastewater enters from the bottom of the activated carbon column for adsorption treatment; the high-salinity industrial wastewater stays in the activated carbon column for 180 minutes; For salinity industrial wastewater, the measured TOC content is 41.9mg / L, and the removal rate is 61%.

[0035] (4) Use the ozone oxidation process to further treat the organic matter in the high-salinity industrial wastewater treated in step ...

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Abstract

The invention discloses a method for treating organic matter in high-salinity industrial wastewater. The method comprises the steps as follows: (1) the industrial wastewater has the chlorine ion concentration of 80-100 g / L, the pH value of 11-14 and the TOC content lower than 110 mg / L; (2) the pH value of the industrial wastewater is adjusted to 4-10 with hydrochloric acid; (3) part of organic matter in the industrial wastewater is adsorbed with activated carbon, and the industrial wastewater stays in an activated carbon device for 90-180 min; (4) the organic matter in the industrial wastewater is continuously treated with an ozonation technology, the industrial wastewater treated in the step (3) is guided to an ozone reaction device, and ozone is introduced into wastewater to react for atleast 20 min. The method has the active effects as follows: the organic matter in the high-salinity industrial wastewater is treated with an adsorption-oxidation combined technology, so that the consumption of ozone is greatly reduced, and the wastewater treatment cost can be effectively reduced. The method is convenient to operate and maintain. The effluent quality can meet the nation-specifiedemission standard.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for treating organic matter in high-salinity industrial wastewater. Background technique [0002] High-salinity industrial wastewater is a type of industrial wastewater, and the pollutants in the wastewater need to be treated before they can be discharged. Most of the existing treatment methods for organic matter in high-salinity industrial wastewater are anaerobic biological treatment. The anaerobic biological method is to treat high-salinity industrial wastewater by cultivating salt-tolerant bacteria. It has a better treatment effect on industrial wastewater with a salt content lower than 2%, but it has a better treatment effect on industrial wastewater with a higher salt content. The effect of wastewater treatment is not ideal. This is mainly because the salt content greater than 2% will lead to an increase in the osmotic pressure of microbial cells, de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F101/30
CPCC02F1/001C02F1/283C02F1/66C02F1/78C02F9/00C02F2101/30
Inventor 罗西子王琴张寒陈春玥张利华李译文周珉
Owner SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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