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

Advanced treatment process of high ammonia nitrogen wastewater based on short-cut nitrification and denitrification

A short-range nitrification and advanced treatment technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, aerobic and anaerobic process treatment, etc., can solve the problems of complicated operation and maintenance, high capital investment and operation cost , to achieve the effect of economic flexibility, saving operating energy consumption, and improving the stability of effluent water quality

Active Publication Date: 2019-09-03
YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For example, the Chinese invention patent application document with the application publication number of CN104528934A discloses a short-range nitrification-denitrification denitrification membrane bioreactor and its sewage treatment process. Nitrogen, but the infrastructure investment and operating costs are high, and the operation and maintenance are more complicated
[0006] Another example is that the Chinese invention patent application document with the application publication number CN105692900A discloses a short-range nitrification-denitrification intermittent aeration sequence batch biological reaction device and a method for treating high ammonia nitrogen sewage. A control method to achieve stable short-cut nitrification within the country, but it does not involve the advanced treatment of high-ammonia nitrogen sewage

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
  • Advanced treatment process of high ammonia nitrogen wastewater based on short-cut nitrification and denitrification
  • Advanced treatment process of high ammonia nitrogen wastewater based on short-cut nitrification and denitrification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Take the effluent from a biogas digester of a pig farm in Jiaxing City (average COD concentration is 3532mg / L, BOD 5 / COD is between 0.25-0.35, ammonia nitrogen concentration is 923mg / L, total nitrogen concentration is 1489mg / L, SS is 2.3g / L, pH 7.8-8.3) as an example.

[0048] The wastewater is first lifted from the regulating tank to the coagulation sedimentation tank to remove suspended solids and large particles. The coagulation and sedimentation uses PAC as a coagulant with a dosage of 100mg / L, and PAM as a coagulant aid with a dosage of 12mg / L. L, SS of coagulation sedimentation water≤1000mg / L.

[0049] The effluent of coagulation and sedimentation enters the first-stage intermittent aeration SBR by gravity, and adopts a step-by-step water intake mode (such as figure 2 As shown in the upper picture), every 12h is an operation cycle, the operation hydraulic retention time is set to 2d, and the volume load is 0.46kg NH 4 + -N / m 3 d, the aeration frequency is 4,...

Embodiment 2

[0063] Take the landfill leachate (average COD concentration of 1963mg / L, BOD 5 / COD between 0.18-0.25, ammonia nitrogen concentration of 1310mg / L, total nitrogen concentration of 1550mg / L, SS of 2.7g / L, pH 8.1-8.7) as an example.

[0064] The wastewater is first lifted from the regulating tank to the coagulation sedimentation tank to remove suspended solids and large particles, and the coagulation sedimentation uses FeSO 4 As a coagulant, the dosage is 300mg / L, PAM is used as a coagulant aid, the dosage is 8mg / L, and the SS of the coagulation and sedimentation water is ≤1000mg / L.

[0065] The coagulation and sedimentation effluent plus carbon source control COD / TN is about 3, and enters the first-stage intermittent aeration SBR in a self-flowing manner, and the mode is the same as that of embodiment 1 (such as figure 2 As shown in the upper picture), the operating hydraulic retention time is 3.5d, and the volume load is 0.37kg NH 4 + -N / m 3 d. Level 1 intermittent aerat...

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 process for high-ammonia-nitrogen sewage based on shortcut nitrification and denitrification. The process comprises the steps of firstly carrying out two-stage shortcut nitrification and denitrification treatment on pretreated high-ammonia-nitrogen sewage; and carrying out advanced treatment on effluent after two-stage shortcut nitrification and denitrification treatment and directly discharging the effluent, wherein advanced treatment comprises at least one of biological filtration treatment, advanced oxidation treatment and membrane biological treatment. According to the advanced treatment process for the high-ammonia-nitrogen sewage based on shortcut nitrification and denitrification, advanced treatment of the high-ammonia-nitrogen sewage is achieved and the treated effluent meets the up-to-standard discharge standard.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a high-ammonia-nitrogen sewage advanced treatment process based on short-range nitrification and denitrification. Background technique [0002] The problem of water pollution has been paid more and more attention by people, and the eutrophication of water body is getting worse day by day. The main cause of eutrophication is the massive discharge of N and P. The state included 10% reduction of ammonia nitrogen emissions into the binding targets, and in April 2015, it further released the "Water Pollution Prevention and Control Action Plan" (Water Ten Articles), proposing that by 2020, the Yangtze River, the Yellow River, the Pearl River, the Songhua River, and the Huaihe River The proportion of water quality in the seven major river basins such as Haihe River, Liaohe River, etc. is good (meeting or better than Class III) will reach more than 70%; by 2030, the proportion o...

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): C02F9/14C02F3/30C02F101/16C02F101/30
Inventor 刘锐宋小燕陈吕军
Owner YANGTZE DELTA REGION INST OF TSINGHUA UNIV ZHEJIANG
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