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

Device for integrating baffling denitrification and dephosphorization and COD degradation

A denitrification phosphorus removal and integrated device technology, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the impact of denitrification phosphorus accumulation bacteria, baffle reactor Stir unevenly and other problems to reduce impact, avoid excessive phosphorus absorption and excessive phosphorus release under anaerobic conditions, and achieve low equipment costs

Active Publication Date: 2015-11-25
SINOPEC YANGZI PETROCHEM +1
View PDF5 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the existing baffle plate reactor will have an impact on the denitrifying phosphorus accumulating bacteria when the water inlet is abnormal and the nitrate nitrogen of the return sludge is too high; Disadvantages of unevenness

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
  • Device for integrating baffling denitrification and dephosphorization and COD degradation
  • Device for integrating baffling denitrification and dephosphorization and COD degradation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The petrochemical wastewater after air flotation treatment (CODcr is 330mg / L, ammonia nitrogen concentration is 30mg / L, TP is 5mg / L) enters the first anaerobic compartment (2) through the water inlet (1), and is mixed with the return sludge The pH is around 7 to degrade COD and remove refluxed nitrate nitrogen. Then flow into the second anaerobic compartment (3) and adjust the pH to about 7.5 by adding lye, and the denitrifying phosphorus-accumulating bacteria perform anaerobic phosphorus release and degrade COD to synthesize energy and store it in the body. After the separation of mud and water in the middle sedimentation compartment (4), the sludge overflows to the anoxic compartment (6), with an excess ratio of 30%; while the supernatant enters the nitrification compartment (5). The pH of the supernatant entering the nitrification cell (5) is adjusted to about 8.0, and the nitrifying bacteria oxidize the ammonia nitrogen in the supernatant to nitrate nitrogen, etc., ...

Embodiment 2

[0035] Processing method is as embodiment 1. .The specific operating indicators are:

[0036] The CODcr of petrochemical wastewater after air flotation treatment is 230mg / L, the concentration of ammonia nitrogen is 20mg / L, the concentration of TP is 3mg / L, the water temperature is 30°C, and the pH value is 7.0.

[0037] The measured COD of the effluent is 40mg / L, the concentration of ammonia nitrogen is only 1mg / L, the concentration of TN is 3.5mg / L, and the concentration of TP is 0.3mg / L. The removal rates of COD, ammonia nitrogen and TP are respectively 83%, 95%, and 90%. , the effluent reaches the first-class A standard stipulated by the state.

Embodiment 3

[0039] Processing method is as embodiment 1. .The specific operating indicators are:

[0040] The CODcr of petrochemical wastewater after air flotation treatment is 430mg / L, the concentration of ammonia nitrogen is 44mg / L, the concentration of TP is 7mg / L, the water temperature is 30°C, and the pH value is 7.0.

[0041] The measured COD of the effluent is 48mg / L, the concentration of ammonia nitrogen is only 2mg / L, the concentration of TN is 6.5mg / L, and the concentration of TP is 0.4mg / L. The removal rates of COD, ammonia nitrogen and TP are respectively 89%, 95%, and 94%. , the effluent reaches the first-class A standard stipulated by the state.

[0042] This device adopts the theory of denitrification phosphorus removal, which not only solves the problem of insufficient carbon source caused by substrate competition in the traditional biological phosphorus removal process, but also avoids the contradiction between the sludge age mismatch between nitrifying bacteria sludge a...

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 device for integrating baffling denitrification and dephosphorization and COD degradation. The device comprises a reaction chamber, a transmission module and an oxygen supply module, wherein the reaction chamber comprises a first anaerobic cell, a second anaerobic cell, a mid-sedimentation cell, a nitrification cell, an anoxic cell, an aerobic cell and an end-sedimentation cell; the cells are separated by overflow partition plates; the transmission module comprises a sludge surpassing member and a sludge return member; and the oxygen supply module is composed of aerating equipment and two gas distributing pipes. The device disclosed by the invention has the benefits that as double anaerobic cells are designed with buffer functions, the impact effect of inflow abnormality and overhigh nitric nitrogen of return sludge on denitrifying phosphate-accumulating organisms is reduced, oxygen brought into a water inflow process is avoided, absolute anaerobism of the second anaerobic cell is ensured, and the stability and efficiency of the device disclosed by the invention in the treatment process are improved.

Description

technical field [0001] The invention relates to an integrated treatment device for realizing denitrification phosphorus removal and COD degradation by using a baffle plate reactor for industrial waste water. Background technique [0002] With the increasingly stringent national environmental protection policies and standards and the vigorous promotion of the current circular economy, industrial wastewater must be treated to meet the standards before it can be discharged. At present, there are many treatment methods for industrial wastewater, such as A / O, A2 / O, SBR, CASS, UCT, MUCT, VIP, JHB, and oxidation ditch. Although these traditional nitrogen and phosphorus removal processes can remove nitrogen and phosphorus in wastewater, However, microorganisms such as nitrifying bacteria, denitrifying bacteria, and phosphorus accumulating bacteria have contradictions and competitions in terms of organic load, sludge age, and carbon source requirements. It is difficult to obtain stab...

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
IPC IPC(8): C02F9/14
Inventor 王哲明韩萍芳黄勇陆嘉昂罗翔袁大亮王桂林吕效平章继龙徐宁郭玉旗任继明
Owner SINOPEC YANGZI PETROCHEM
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