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

Multi-section tubular type sludge rapid thermal hydrolysis treatment process

A treatment process, thermal hydrolysis technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of high unit investment cost, large floor area, and large number of equipment, etc. Achieve the effect of less equipment, less power equipment and low investment

Inactive Publication Date: 2016-11-23
深圳市利赛环保科技有限公司
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned various hydrothermal treatment processes have problems such as large number of equipment, large floor area, high unit investment cost, and poor reliability. To solve these problems, a multi-stage tubular sludge rapid thermal hydrolysis process has been developed.

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
  • Multi-section tubular type sludge rapid thermal hydrolysis treatment process
  • Multi-section tubular type sludge rapid thermal hydrolysis treatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0053] Embodiment 2. In the fast-packed tubular hydrothermal reactor, the reaction temperature is 180° C., and the residence time is 10 min. Other reaction conditions are the same as in Embodiment 1. As a result of the reaction, total solids (TS) were removed by 5.6%, total organic solids (TVS) were removed by 10%, suspended solids (SS) were dissolved by 18%, and supernatant COD (SCOD) was 33000 mg / L. The solids content of the dewatered cake was 51%.

Embodiment 3

[0054] Embodiment 3. In the fast-packed tubular hydrothermal reactor, the reaction temperature is 190° C., and the residence time is 10 min. Other reaction conditions are the same as in Embodiment 1. As a result of the reaction, total solids (TS) were removed by 7.2%, total organic solids (TVS) were removed by 15%, suspended solids (SS) were dissolved by 26%, and supernatant COD (SCOD) was 45000 mg / L. The solids content of the dewatered cake was 62%.

Embodiment 4

[0055] Embodiment 4. In the fast-packed tubular hydrothermal reactor, the reaction temperature is 170° C., the residence time is 10 min, and other reaction conditions are the same as in Embodiment 1. As a result of the reaction, total solids (TS) were removed by 5.7%, total organic solids (TVS) were removed by 10.2%, suspended solids (SS) were dissolved by 15.7%, and supernatant COD (SCOD) was 29500 mg / L. The solids content of the dewatered cake was 43%.

[0056] Example 5. The raw sludge at 20°C is mixed and preheated with flash steam for the first time at the inlet of the raw sludge pump, the residence time is 5min, and the temperature rises to 75°C; The second mixing preheating, the residence time is 4min, and the temperature rises to 118°C; then the third mixing and heating is carried out in the secondary static mixer with the mixed steam, the residence time is 6min, and the temperature rises to 172°C; The hydrothermal reactor maintains the temperature for 5 minutes, and ...

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 multi-section tubular type sludge rapid thermal hydrolysis treatment process. The method includes the steps of sending sludge into a crude sludge pump to be primarily mixed with and preheated by flashing steam, pumping the preheated object into a first-stage dynamic mixer to be secondarily mixed with and preheated by raw material steam, making the secondarily mixed and preheated sludge automatically flow into a second-stage static mixer under excess pressure to be finally mixed with and heated by mixed steam coming from a steam ejector, making the tertiarily mixed and heated sludge automatically flow into a rapid-assembled tubular type hydrothermal reactor under excess pressure for reaction, making the sludge meeting the reaction requirements enter a flash tank to be flashed, and further conducting dehydrating or direct anaerobic digestion on the flashed sludge. By means of the process, through a large amount of latent heat generated by directly mixing steam and sludge, the sludge is heated till cells are broken and cytosol is dissolved out, and therefore the dehydrating performance and anaerobic digestion performance of the sludge are changed. The high-grade steam is subjected to flashing heat transferring, so the utilization efficiency of the steam is the highest.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a treatment method for excess sludge in a sewage treatment plant. Background technique [0002] In recent years, with the popularization of urban sewage treatment facilities, the improvement of treatment capacity and the deepening of treatment degree, the amount of sludge generated has increased sharply at a rate of 10% per year. Sludge has complex components, high water content, difficult dehydration, high concentration of organic matter, pathogenic microorganisms, heavy metal ions and other harmful substances, and is often accompanied by stench. If it is not properly treated, it will cause serious secondary pollution and endanger the ecology. environment and human health. [0003] At present, the sludge treatment technology routes mainly include: sludge thermal drying, sludge concentration, sludge mechanical dehydration, sludge anaerobic digestion, sludge aerobic dige...

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 Applications(China)
IPC IPC(8): C02F11/00
Inventor 马随涛邱向阳吴强李焕承李晨
Owner 深圳市利赛环保科技有限公司
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