Coal gasification waste water biochemical treatment equipment and method

A technology for coal gasification wastewater and biochemical treatment, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, biological water/sewage treatment, etc. It can adapt to problems such as small scope, and achieve the effect of inhibiting membrane pollution, low sludge load and good water quality.

Active Publication Date: 2010-08-25
ENN ENVIROTECH CO LTD
View PDF3 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of the existing technology are: high requirements for raw water pretreatment, often need to dilute the raw water, low COD load and ammonia nitrogen load, long residence time, insufficient treatment depth, low COD removal rate and ammonia nitrogen removal rate, low investment And high operating costs, small adaptability to ammonia nitrogen, insufficient impact capacity, unstable system operation, and high alkalinity consumption for high ammonia nitrogen wastewater

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
  • Coal gasification waste water biochemical treatment equipment and method
  • Coal gasification waste water biochemical treatment equipment and method
  • Coal gasification waste water biochemical treatment equipment and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] An actual coal gasification wastewater influent COD: 8600mg / l; influent ammonia nitrogen: 893.41mg / l; influent volatile phenol: 1530mg / l; The residence time of the treatment unit is 15 hours, the residence time of the anoxic biochemical treatment unit is 12 hours, the residence time of the primary aerobic biochemical treatment unit is 20 hours, the residence time of the secondary aerobic biochemical treatment unit is 20 hours, and the residence time of the membrane bioreaction unit is 13 hours), The average concentration of activated sludge is: 6000mg / l, the air-water ratio is 100, the pH value has been maintained between 7.2 and 7.7, and the wastewater treatment effect shown in Table 1 has been obtained under the condition of above 20°C.

[0084] Table 1

[0085] water quality index

raw water

Anaerobic biochemical treatment unit effluent

Anoxic biochemical treatment unit effluent

Primary aerobic biochemical treatment unit effluent

Secondary...

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 provides coal gasification waste water biochemical treatment equipment and a method. The equipment comprises an anaerobic biochemical treatment unit, an anoxic biochemical treatment unit, a one-grade or multiple-grade aerobic biochemical treatment unit and a membrane biological response unit which are communicated in sequence. In addition, the aerobic biochemical treatment unit is also communicated with the anoxic biochemical treatment unit, and the membrane biological response unit is communicated with the anoxic biochemical treatment unit; each biochemical treatment unit has the characteristics of biochemistry and slurry and water separation integration. The coal gasification waste water biochemical treatment equipment and the method have high COD load and high ammonia nitrogen load and can realize high COD removal rate and high ammonia nitrogen removal rate.

Description

technical field [0001] The invention relates to a biochemical treatment device and method for coal gasification wastewater. Background technique [0002] Coal gasification wastewater (including coking wastewater) is a kind of refractory organic wastewater with high COD (chemical oxygen demand) and high ammonia nitrogen. At present, the treatment technology of coal gasification wastewater generally consists of three parts: pretreatment, biochemical treatment and advanced treatment. Biochemical treatment is the main treatment method for removing COD and ammonia nitrogen pollutants from coal gasification wastewater. The biochemical treatment methods used in the treatment of coal gasification wastewater are mainly A / O process (anoxic / aerobic process) and A 2 / O (anaerobic anoxic / aerobic process) process, SBR process is also applied. The main problems of the existing technology are: high requirements for raw water pretreatment, often need to dilute the raw water, low COD load ...

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): C02F9/14C02F1/44C02F3/34C02F3/30
Inventor 于振生李超伟张宝库雷金环李立敏
Owner ENN ENVIROTECH CO LTD
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