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

A combined process and device for denitrification of sewage with automatic circulation

A combined process and automatic circulation technology, applied in the direction of reflux water treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as high concentration, inability to achieve complete denitrification, and uneconomical denitrification facilities

Active Publication Date: 2017-12-05
BEIJING UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, due to the small volume and high concentration of the digested liquid, the denitrification facilities are extremely uneconomical due to the complicated process, and at the same time, the purpose of complete denitrification cannot be achieved

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 combined process and device for denitrification of sewage with automatic circulation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] Such as figure 1 As shown, the structural principle diagram of the sewage denitrification combined process and device for automatic circulation flow of the present invention is provided, which consists of an aeration column 2, a reaction column 7, an inflow pipe 6, a return pipe 12, and an aeration head 3 Composed of the air supply pipe 4, the inside of the aeration column 2 and the reaction column 7 are both cavities, and the upper end of the aeration column 2 is provided with a water inlet 1, and the sewage to be purified enters the aeration column 2 through the water inlet 1. The aeration head 3 is set at the bottom of the inner cavity of the aeration column 2, and the aeration head 3 is connected with the air supply pipe 4, and is used to blow air into the aeration column 2, aerate the sewage, and dissolve and saturate the sewage of oxygen. ...

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 a combined sewage denitrification process and device having an automatic cyclic flowing function. The combined sewage denitrification process comprises the steps that (a) sewage aeration, (b) automatic sewage circulation, (c) organic matter consumption, (d) nitrosation reaction, (e) anaerobic ammonia oxidation reaction, (f) electrochemical reduction reaction and (g) re-oxygenating. The sewage denitrification device comprises an aeration column, a reaction column, an inflow pipe, a backflow pipe and an aeration head and is characterized in that the two ends of the inflow pipe are respectively communicated with the top of the aeration column and the bottom of the reaction column, a sludge layer and a packing layer are arranged in the reaction column, a heterotrophic bacterial colony, a nitrosobacteria colony and an anaerobic ammonium oxidation bacterium colony exist in the sludge layer, and the packing layer consists of reduced scrap iron. The process and device can completely remove a nitrogen element in sewage through nitrous-anaerobic ammonia oxidation cyclic process and scrap iron reduction reaction, meanwhile achieve automatic cyclic flowing of a water body and have the advantages of adopting few mechanical devices and being simple in flow, low in energy consumption and remarkable in beneficial effect.

Description

technical field [0001] The present invention relates to a combined process and device for denitrification of sewage with automatic circulating flow, more specifically, to a process combination of aeration and oxygenation, nitrosation-ANAMMOX denitrification, and electrochemical reduction reaction. And it has the function of automatic circulation of water body to realize the process and device of completely removing nitrogen in sewage. Background technique [0002] Nitrogen source pollutants in water bodies are one of the main causes of water environment pollution, and they mainly exist in the form of ammonia and nitrate. Therefore, nitrogen substances in sewage have always been the focus of environmental protection workers to remove them. Until today, the traditional method is denitrification, and the emerging process is anaerobic ammonium oxidation method. The traditional removal method requires huge energy consumption and input of chemicals, not only the process is compl...

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): C02F9/14C02F101/16
CPCC02F1/4608C02F3/301C02F9/00C02F2101/16C02F2301/04C02F2301/08
Inventor 戚伟康杨晓进戚伟健于中振许杰胡汉君
Owner BEIJING UNIV OF TECH
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