Check patentability & draft patents in minutes with Patsnap Eureka AI!

A system and method for advanced treatment of crushed coal pressurized gasification wastewater

A crushed coal pressurized gasification and advanced treatment technology, which is applied in the direction of oxidized water/sewage treatment, multi-stage water treatment, water/sewage treatment, etc. Use and other issues to achieve the effect of improving biodegradability, improving efficiency, and reducing consumption

Inactive Publication Date: 2018-09-25
BEIJING SOUND ENVIRONMENTAL ENG +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a two-stage advanced ozone oxidation for the problem that the conventional "pretreatment + biochemical treatment" cannot effectively remove the refractory organic matter in the crushed coal pressurized gasification wastewater, and the effluent cannot meet the standard discharge or further reuse Advanced treatment system and method for crushed coal pressurized gasification wastewater combined with biochemical treatment

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
  • A system and method for advanced treatment of crushed coal pressurized gasification wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Use the crushed coal pressurized gasification wastewater advanced treatment system of the present invention to treat a certain coal gasification wastewater, and the treatment capacity is 1.0m 3 / h, the temperature is 30°C; the first-stage filter device adopts sand filter; the ozone dosage of the ozone catalytic oxidation device is 160mg ozone / L wastewater, and the hydraulic retention time is 40min; the hydraulic retention time of the first-stage BAF is 4h, and the air compressor is used Aeration, the air-to-water ratio is 6; the secondary filter device adopts sand filter; the ozone dosage of the ultraviolet / ozone reaction device is 100mg ozone / L wastewater, the hydraulic retention time is 40min, and the ultraviolet power is 1.68kW; the secondary BAF hydraulic retention The time is 2 hours, the air compressor is used for aeration, and the air-water ratio is 2. The COD of the water to be treated is 302mg / L. After the ozone catalytic oxidation treatment, the COD is reduced...

Embodiment 2

[0043] A certain coal gasification wastewater is treated with the crushed coal pressurized gasification wastewater advanced treatment system of the present invention, and the treatment capacity is 1m 3 / h, the temperature is 25°C; the primary filter device adopts sand filter; the ozone dosage of the ozone catalytic oxidation device is 140mg ozone / L wastewater, and the hydraulic retention time is 1h; the hydraulic retention time of the primary BAF is 3h, and the air compressor is used Aeration, the air-water ratio is 5; the secondary filter device adopts sand filter; the ozone dosage of the UV / ozone reaction device is 120mg ozone / L wastewater, the hydraulic retention time is 1h, and the UV power is 1.96kW; the secondary BAF hydraulic retention The time is 3 hours, the air compressor is used for aeration, and the air-water ratio is 2.5. The COD of the water to be treated is 290mg / L. After the ozone catalytic oxidation treatment, the COD is reduced to 132mg / L. After the first-lev...

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 an advanced treatment system and method for crushed coal pressurized gasification waste water, and belongs to the field of waste water treatment. The system comprises a first-stage filter lift pump, a first-stage filter device, an ozone catalytic oxidation reaction device, a No.1 buffer water tank, a first-stage biological aerated filter (BAF) lift pump, a first-stage BAF system, a No.2 buffer water tank, a second-stage filter lift pump, a second-stage filter device, an ultraviolet and ozone reaction device, a No.3 buffer water tank, a second-stage BAF lift pump, a second-stage BAF system and a product water tank which are connected in sequence. According to the system, organic substances which are difficult to degrade are removed through ozone catalytic oxidation, and the biodegradability of the waste water is improved; biodegradable organic substances subjected to ozone oxidation are removed through microorganisms in the first-stage BAF system; the ultraviolet and ozone reaction device improves the biodegradability of the waste water again through photolysis hydroxyl free radicals, and the biodegradable organic substances subjected to oxidation are removed through the second-stage BAF system. By means of two-stage oxidation and biochemical treatment, the ozone dosage is low, the aeration quantity is low, the treatment effect is good, the operating cost is low, and operation is easy.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to an advanced treatment system and method for pressurized gasification waste water of crushed coal. Background technique [0002] my country's energy structure, which is rich in coal, lacks oil and lacks gas, determines that the development of coal chemical industry using the advantages of relatively abundant coal resources in my country has become a feasible means to solve energy problems, and the preparation of synthesis gas is the most important thing in the development of coal chemical industry. The pulverized coal pressurized gasification process (represented by Lurgi furnace) has mature technology, relatively low investment and operating costs, and is widely used in coal gasification, especially coal-to-natural gas. However, the main problem that restricts the application of this technology is the waste water treatment of crushed coal pressurized gasification. Many coal g...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/32C02F1/725C02F1/78C02F3/02C02F9/00C02F2301/08
Inventor 邢林林闫少辉姜安平王凯
Owner BEIJING SOUND ENVIRONMENTAL ENG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com