Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

City sewage treating process and system

A technology for urban sewage and treatment methods, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Simple, short hydraulic retention time, saving construction investment

Inactive Publication Date: 2005-12-14
高斌 +2
View PDF0 Cites 23 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, sewage treatment plants need to occupy a large amount of arable land, which also confuses governments at all levels, especially the land in large and medium-sized cities is very expensive. It is obviously not suitable for my country's national conditions to use the same low-load treatment method as in developed countries.
Therefore, many sewage treatment plants can afford to be built but cannot be operated.

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
  • City sewage treating process and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The technical solution and other beneficial effects of the present invention will be apparent through the detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

[0033] The embodiment of the urban sewage treatment system shown in the accompanying drawings includes a coarse grid 1, a middle grid 2, a water collection pump room 3, a fine grid 15, a mixed reaction grit chamber 4, an inclined tube sedimentation tank 5, and an air flotation removal tank. Oil pond 6, nitrification pond 7, denitrification pond 8, sand filter pond 9 and ultraviolet ray disinfection pond 10, they are connected successively through sewage pipeline, on the pipeline before sewage enters water collecting pump room 3 and sewage enters fine grid 15, Each is provided with a metering pump 11 and a metering pump 12 for adding flocculant and coagulant aid respectively.

[0034]Among them, the air flotation degreasing tank 6 is provided wi...

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 present invention discloses city sewage treating process and system. The city sewage treating process includes interception with coarse and middle grating to eliminate large suspended matter and the following steps: throwing flocculent before sewage flows into collecting pump house; throwing coagulant aid after sewage flows out of collecting pump house; treating in mixing and reacting silt basin; solid-liquid separation in settling pond; treating in nitrifying pond and denitrifying pond and filtering in sand filter. The process can treat mixed city sewage of industry waste water and domestic sewage and with BOD / COD in 0.15-0.3, can eliminate phosphate and nitrogen simultaneously. The present invention has short retention period, short technological process, small covered area and convenient management.

Description

technical field [0001] The invention relates to a method and system for treating urban sewage, in particular to a method and system for treating sewage with low biochemical coefficient and short hydraulic retention time. Background technique [0002] my country is already a resource-deficient country in the world, and the available water resources per capita are less than 1 / 4 of the world's average, and the distribution is extremely uneven. With the rapid economic development in recent decades, most cities in my country are short of water. The problem is becoming more and more prominent, and water shortage has become a bottleneck problem that restricts the sustainable development of many cities' economies. At the same time, because the development of water pollution control methods and treatment technologies, and the investment in treatment facilities are relatively lagging behind, most urban sewage is directly discharged without any treatment, and nearly 85% of the discharge...

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): C02F9/14
Inventor 高斌李利军高腾霄
Owner 高斌
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
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