Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High-concentration organic wastewater treatment system and method

A technology for organic wastewater treatment and organic wastewater, applied in water/sewage treatment, biological water/sewage treatment, neutralized water/sewage treatment, etc., can solve the problem of increasing the input cost of cleaning activated carbon, cumbersome separation of carbon and water, secondary pollution, etc. problems, to achieve the effects of saving pharmaceutical costs, increasing processing pressure, and reducing usage

Pending Publication Date: 2018-08-10
JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the activated carbon with saturated adsorption cannot be recycled, it will not only increase the input cost of cleaning activated carbon, but also cause serious waste of resources, and may cause secondary pollution at the same time.
At present, the research on activated carbon for wastewater treatment mainly focuses on powdered activated carbon, and the separation of carbon and water in the later stage is relatively cumbersome.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High-concentration organic wastewater treatment system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 The high-concentration organic wastewater treatment system shown includes a regulating tank, a continuous hydrothermal oxidation system, an anaerobic reaction system, an aerobic reaction system, and an activated carbon adsorption system connected in sequence through liquid pipelines; among them, the activated carbon adsorption system passes solid The pipeline connects the aerobic reaction system, the intermittent wet oxidation system and the activated carbon washing system in sequence to form an activated carbon circulation treatment loop; the effluent part of the activated carbon adsorption system is directly discharged, and part of it is introduced into the activated carbon washing system as washing water; the activated carbon washing system and the intermittent wet type The liquid generated by the oxidation system is collected and directly introduced into the regulating tank through the liquid pipeline. The pipeline between the adjustment tank and th...

Embodiment 2

[0044] Adopt the system described in embodiment 1 to process the method for high-concentration organic waste water:

[0045] The waste water to be treated is: the production waste water of a chemical plant, the pH value is 6.63, and the COD is 20800mg / L.

[0046] Treatment steps: import the waste water to be treated into the adjustment tank, add 30% sodium hydroxide lye according to the actual situation, adjust the pH of the waste water to 9, stir evenly, and put the water on the pipeline between the adjustment tank and the continuous hydrothermal oxidation system Add 2% copper nitrate solution to the dosing mixer according to the demand to keep the catalyst mass concentration at 0.1%, and then introduce a continuous hydrothermal oxidation system; the continuous hydrothermal oxidation system controls the reaction temperature to 280 ° C, and oxygen is used as the oxidant The oxygen purity is 94%, the oxidation coefficient is 0.9, the reaction pressure is 7MPa, and the reaction ...

Embodiment 3

[0058] Adopt the system described in embodiment 1 to process the method for high-concentration organic waste water:

[0059] The waste water to be treated is: the production waste water of a chemical factory, the pH value is 9, and the COD is 41100mg / L.

[0060] Treatment steps: import the wastewater to be treated into the regulating tank, stir evenly, add 2% copper nitrate solution to the catalyst mass concentration in the dosing mixer on the pipeline between the regulating tank and the continuous hydrothermal oxidation system according to the demand Keep it at 0.2%, and introduce a continuous hydrothermal oxidation system; the continuous hydrothermal oxidation system controls the reaction temperature at 300°C, the oxygen purity is 94%, the oxidation coefficient is 0.95, the reaction pressure is 8MPa, and the reaction time is 2h. The COD conversion rate of wastewater treated by the oxidation system is 83.7%, the biodegradability of the effluent is 0.5, and the pH is 7.9; the ...

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 discloses a high-concentration organic wastewater treatment system, which comprises a regulating tank, a continuous hydrothermal oxidation system, an anaerobic reaction system, an aerobic reaction system and an activated carbon adsorption system in sequential communication through a liquid pipeline. The activated carbon adsorption system is communicated with the aerobic reaction system, an intermittent wet oxidation system and an activated carbon washing system sequentially through a solid pipeline to form an activated carbon cyclic treatment loop. Effluent of the activated carbon adsorption system is partially directly discharged out and partially guided into the activated carbon washing system to serve as water for washing. Liquid generated by the activated carbon washing system and liquid generated by the intermittent wet oxidation system are collected and then directly guided into the regulating tank through the liquid pipeline. The invention further discloses a method for treating high-concentration organic wastewater by the high-concentration organic wastewater treatment system. By an integral process, the wastewater COD removal rate is larger than 99.8%, high-concentration organic wastewater treatment, catalyst partial recovery and disposal and intermediate product utilization can be effectively realized, and system safety effluent and sludge stable treatment can be guaranteed.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a high-concentration organic wastewater treatment system and method. Background technique [0002] High-concentration organic wastewater generally refers to wastewater containing relatively high concentrations of organic matter discharged from industries such as food, papermaking, and pesticides. Usually, the COD content of wastewater is above 2000 mg / L. These high-concentration organic wastewaters usually contain a large amount of carbohydrates, fats, fibers, etc., and some high-concentration organic wastewaters are even accompanied by strong biological toxicity. If these wastewaters are not properly treated, they will easily cause serious damage to the ecological environment. Threat to human health. [0003] Wet Air Oxidation (WAO) is a hydrothermal oxidation process proposed in the 1950s to effectively treat high-concentration, toxic and harmful wastewater. This process use...

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): C02F9/14C02F101/30
CPCC02F9/00C02F2303/16C02F2101/30C02F1/283C02F3/30C02F3/106C02F1/725C02F1/727C02F1/66
Inventor 刘树洋公彦猛陆嘉昂姜伟立王未常闻捷
Owner JIANGSU PROVINCIAL ACAD OF ENVIRONMENTAL SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com