Treatment method of high-salinity organic wastewater

A technology for organic wastewater and treatment methods, which is applied in water/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc. It can solve the problems of low ratio of BOD to COD, difficult to apply to large factories, difficult to handle requirements, etc. , to achieve the effect of reducing the difficulty of biochemical treatment, suitable for popularization and application, and reducing the difficulty of treatment

Inactive Publication Date: 2017-06-13
山西翔宇化工有限公司
View PDF7 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In modern fine chemical production, a large amount of high-salt wastewater is often produced. The COD of this wastewater is as high as 20,000 mg/L, the salinity is 8%-15%, and the pH is strong acid or alkaline. Due to the ratio of BOD to COD Very low, cannot be treated by traditional biochemical methods or cannot reach emission standards after treatment
High salt will dehydrate microbial cells and cause cell protoplasm separation, resulting in inhibition and toxicity. At the same time, it will increase the density of wastewater, causing activated sludge to float and lose, which seriously affects the effect of biochemical treatment.
The treatment of high salinity and organic matter wastewater has long been a difficult problem to solve. At present, there are many methods for the treatment of saline wastewater, such as biochemical degradation, ion exchange, electrolysis, evaporation, membrane method, etc., but due

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for treating high-salt organic wastewater, comprising the steps of:

[0024] 1) Take 1000mL of high-salt wastewater, filter to remove impurities, and then pass through the resin adsorption column at a speed of 0.5BV / h.

[0025] 2) After the adsorption is completed, take the adsorption solution and test it. The COD removal rate is 99%. The resin is first washed with 2BV of water, then analyzed with 2BV of methanol, the analysis solution is collected, and then the resin column is rinsed with 3BV of water.

[0026] 3) After neutralization, the adsorption liquid is evaporated and concentrated with an evaporator until white crystalline salt is washed out, then cooled and filtered, the appearance of the salt is white, the purity is 95%, and the COD of the evaporated water meets the biochemical standard after testing.

[0027] 4) After the distilled water is biochemically treated by the biochemical small test equipment, the pH of the wastewater is 6-9, the COD is less...

Embodiment 2

[0029] A method for treating high-salt organic wastewater, comprising the steps of:

[0030] 1) After the high-salt wastewater enters the 1# homogeneous tank, the floating objects on the surface are salvaged.

[0031] 2) After passing the above wastewater through the filter, it enters the resin column at a rate of 1BV / h for adsorption, and the adsorption liquid enters the 2# homogeneous pool for use. After the resin is saturated, first use 2BV soft water to clean the resin column, and then use 1BV of methanol solution is used to analyze the resin column, and the analysis solution is returned to the workshop for use, and then 4BV of soft water is used to clean the resin column, of which the first 0.5BV is returned to the workshop for recycling, and the rest is used as the next washing solution.

[0032] 3) The waste water in the 2# homogeneous pool enters the four-effect evaporator at a rate of 1.1m³ / h. The evaporator evaporates and concentrates to obtain high-concentration mot...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a treatment method of high-salinity organic wastewater, and belongs to the field of wastewater treatment. The problem of wastewater containing high salinity and high organic matters is mainly solved, and the method adopts a combined way of resin adsorption, multi-effect or MVR evaporation and biochemical treatment to carry out the wastewater treatment, so that the removal rate of salt and the removal rate of COD both reach 99.5% or more; by adopting resin adsorption, effective components in the wastewater can be recycled to a great extent, and meanwhile, the contents of organic matters in the salt can be reduced, and the subsequent biochemical cost also can be reduced; by evaporation desalination, the salt content in the wastewater can be reduced to ensure that the wastewater can be subjected to biochemical treatment; a continuous treatment way can be adopted, and the method has a flow process, is easy to operate, is convenient to maintain, is large in treatment capacity, and is suitable for being popularized and applied.

Description

technical field [0001] The invention relates to the technical field of fine chemical wastewater treatment, and more specifically, relates to a treatment method for high-salt organic wastewater. Background technique [0002] In modern fine chemical production, a large amount of high-salt wastewater is often produced. The COD of this wastewater is as high as 20,000 mg / L, the salinity is 8%-15%, and the pH is strong acid or alkaline. Due to the ratio of BOD to COD It is very low, and cannot be treated by traditional biochemical methods or cannot meet the emission standards after treatment. High salt will dehydrate microbial cells and cause cell protoplasm separation, resulting in inhibition and toxicity. At the same time, it will increase the density of wastewater, causing activated sludge to float and lose, seriously affecting the effect of biochemical treatment. The treatment of high salinity and organic matter wastewater has long been a difficult problem to solve. At presen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C02F9/14
CPCC02F9/00C02F3/00C02F1/285C02F1/04C02F1/041
Inventor 张建军原俊武
Owner 山西翔宇化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap