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Method for treating organic matter in high-salinity industrial wastewater

A technology for industrial wastewater and high salinity, applied in water/sewage treatment, multi-stage water/sewage treatment, oxidized water/sewage treatment, etc., can solve the problem of increased osmotic pressure of microbial cells, secondary pollution, and large amounts of iron and carbon Solve problems such as sludge, achieve convenient operation and maintenance, reduce ozone consumption, and reduce wastewater treatment costs

Active Publication Date: 2021-11-16
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 method for treating organic matter in high-salinity industrial wastewater of the present invention comprises the following steps: (1) the chloride ion concentration of the industrial wastewater is 80-100g / L, the pH value is 11-14, and the TOC content is lower than 110mg / L; (2) Use hydrochloric acid to adjust the pH value of the industrial wastewater to within the range of 4 to 10; (3) Use activated carbon to absorb some organic matter in the industrial wastewater, and keep the industrial wastewater in the activated carbon device for 90 to 180 minutes; (4) Use ozone The oxidation process continues to process the organic matter in the industrial wastewater, and the industrial wastewater treated in step (3) is introduced into the ozone reaction device, and ozone is introduced into the wastewater to react for at least 20 minutes; the positive effect of the present invention is: the adsorption-oxidation combined The organic matter in high-salinity industrial wastewater is treated by technology, which greatly reduces the amount of ozone and can effectively reduce the cost of wastewater treatment; and the operation and maintenance are convenient; the quality of the effluent can meet the discharge standards stipulated by the state.

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 Patents(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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