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An integrated device for baffle denitrification phosphorus removal and cod degradation

A technology of denitrification and phosphorus removal, integrated device, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Phosphorus bacteria impact and other problems, to avoid the effects of excessive phosphorus absorption and excessive phosphorus release under anaerobic conditions, reduce the impact effect, and avoid the effects of biological phase confusion

Active Publication Date: 2017-07-07
SINOPEC YANGZI PETROCHEM +1
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  • 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

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  • An integrated device for baffle denitrification phosphorus removal and cod degradation
  • An integrated device for baffle denitrification phosphorus removal and cod degradation

Examples

Experimental program
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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 3 mg / L, the water temperature is 30°C, and the pH value is 7.0.

[0037] The measured COD of the effluent was 40 mg / L, the concentration of ammonia nitrogen was only 1 mg / L, the concentration of TN was 3.5 mg / L, and the concentration of TP was 0.3 mg / L. The removal rates of COD, ammonia nitrogen and TP were respectively 83% and 95%. 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 7 mg / L, the water temperature is 30°C, and the pH value is 7.0.

[0041] The measured COD of the effluent was 48 mg / L, the concentration of ammonia nitrogen was only 2 mg / L, the concentration of TN was 6.5 mg / L, and the concentration of TP was 0.4 mg / L. The removal rates of COD, ammonia nitrogen and TP reached 89% and 95% respectively. 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 bacteri...

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Abstract

The invention discloses an integrated device for baffle denitrification phosphorus removal and COD degradation, which includes a reaction chamber, a transmission module and an oxygen supply module, wherein the reaction chamber includes a first anaerobic compartment, a second anaerobic compartment, Medium sinking cell, nitrification cell, anoxic cell, aerobic cell and final sinking cell, each cell is separated by an overflow partition, and the transmission module includes a sludge overtaking component and a sludge return component, The oxygen supply module consists of aeration equipment and 2 air distribution pipes. Beneficial effects of the present invention Adopt the double anaerobic chamber with buffer function design, reduce the impact of abnormal water inflow and high nitrate nitrogen of return sludge on denitrifying phosphorus accumulating bacteria, and avoid the impact of denitrifying phosphorus accumulating bacteria Oxygen ensures the absolute anaerobic of the second anaerobic compartment, and improves the stability and high efficiency of the treatment process of the device of the present invention.

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

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Application Information

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Patent Type & Authority Patents(China)
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
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