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Quick starting method of SBR (Sequencing Batch Reactor) for synchronously denitrifying and removing phosphor

A technology for simultaneous denitrification and phosphorus removal, and rapid start-up. It is applied in chemical instruments and methods, bacteria, water/sludge/sewage treatment, etc., to improve the effluent effect and shorten the start-up time.

Inactive Publication Date: 2014-02-19
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, although my country's urban sewage treatment rate has been greatly improved, the problem of eutrophication caused by nitrogen and phosphorus in slow-flowing water is still becoming more and more serious. Phosphorus discharge standard

Method used

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  • Quick starting method of SBR (Sequencing Batch Reactor) for synchronously denitrifying and removing phosphor

Examples

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Effect test

Embodiment 1

[0026] The SBR system was operated under anaerobic / aerobic conditions, with instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 3 hours, sedimentation for 1 hour, and drainage for 1.5 hours. In the aerobic stage, the DO concentration in the water was kept at 2-4mg / L, and in the anaerobic stage, the DO concentration in the water was less than 0.2mg / L. The water temperature was controlled at 20-25°C, and the pH value was adjusted to 7-8. Run 20d. The removal rate of ammonia nitrogen reaches 90%, and the removal rate of TP reaches 70%;

[0027] Change the operation mode of the system to: instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 1.5 hours, anoxic stirring for 1.5 hours, aerobic aeration for 0.5 hours, sedimentation for 1 hour, and drainage for 1 hour. In the aerobic and anaerobic phases, the DO concentration and water temperature remain unchanged, and the slu...

Embodiment 2

[0032] The SBR system was operated under anaerobic / aerobic conditions, with instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 3 hours, sedimentation for 1 hour, and drainage for 1.5 hours. In the aerobic stage, the DO concentration in the water was kept at 2-4mg / L, and in the anaerobic stage, the DO concentration in the water was less than 0.2mg / L. The water temperature was controlled at 20-25°C, and the pH value was adjusted to 7-8. Run 30d. The removal rate of ammonia nitrogen reaches 99%, and the removal rate of TP reaches 80%. Change the operation mode of the system to: instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 1.5 hours, anoxic stirring for 1.5 hours, aerobic aeration for 0.5 hours, sedimentation for 1 hour, and drainage for 1 hour. In the aerobic and anaerobic phases, the DO concentration and water temperature remain unchanged, and the sludge is di...

Embodiment 3

[0036] The SBR system was operated under anaerobic / aerobic conditions, with instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 3 hours, sedimentation for 1 hour, and drainage for 1.5 hours. In the aerobic stage, the DO concentration in the water was kept at 2-4mg / L, and in the anaerobic stage, the DO concentration in the water was less than 0.2mg / L. The water temperature was controlled at 20-25°C, and the pH value was adjusted to 7-8. Run 25d. The removal rate of ammonia nitrogen reaches 95%, and the removal rate of TP reaches 78%.

[0037] Change the operation mode of the system to: instantaneous water inflow for 5 minutes, anaerobic stirring for 2.5 hours, aerobic continuous aeration for 1.5 hours, anoxic stirring for 1.5 hours, aerobic aeration for 0.5 hours, sedimentation for 1 hour, and drainage for 1 hour. In the aerobic and anaerobic phases, the DO concentration and water temperature remain unchanged, and the slu...

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Abstract

The invention discloses a quick starting method of an SBR (Sequencing Batch Reactor) for synchronously denitrifying and removing phosphor, and belongs to the field of sewage treatment. The quick starting method using a batch-injection chronological sequencing batch reactor comprises the following steps: (1), operating the SBR system under an anaerobic / aerobiotic alternation condition, and domesticating and enriching phosphorus-accumulating bacteria, so that the phosphorus-accumulating bacteria intake phosphor under the aerobiotic condition and release phosphor under the anaerobic condition; removing phosphate in water by removing mud; (2), changing an operating way of the system, and enriching denitrifying phosphate-accumulating organisms; increasing an anoxic zone and shortening the aeration time, so that the denitrifying phosphate-accumulating organisms utilize an intracellular carbon source and use nitrate / nitrite as an electron acceptor to intake phosphor; (3), adding a compound fungicide into the reaction, so that biological enhancement is repeatedly coupled with anaerobic / aerobiotic / anoxic / aerobiotic starting method, DPB (Denitrifying Phosphorus-removal Bacteria) are effectively proliferated, glycogen accumulating organisms are restrained, the starting time of the reactor is shortened, and the water outlet effect is improved. The starting way disclosed by the invention operates about 50 days in total, can be used for saving about 30 days and saving the aeration time by about 30% in comparison with an anaerobic / aerobiotic / anoxic starting method.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a method for quickly starting an SBR for synchronous denitrification and dephosphorization. Background technique [0002] In recent years, although my country's urban sewage treatment rate has been greatly improved, the problem of eutrophication caused by nitrogen and phosphorus in slow-flowing water is still becoming more and more serious. Phosphorus emission standards. Although the traditional sewage biochemical treatment process can effectively reduce the BOD in sewage 5 and SS, but only 10% to 20% of nitrogen and phosphorus in sewage can be removed. Therefore, new nitrogen and phosphorus removal technology and effective operation control technology are applied in sewage treatment process to achieve its stability, high efficiency and low consumption. operation is particularly important. [0003] Nitrogen and phosphorus removal processes mainly include SBR process,...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/34C12N1/20
Inventor 杨辉任晶张宇杨继刚赵萌鲁思涵刘昌昊
Owner SHENYANG JIANZHU UNIVERSITY
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