Method for anaerobic ammonia oxidation treatment of low-concentration ammonia nitrogen wastewater

A low-concentration ammonia nitrogen and anaerobic ammonia oxidation technology, applied in the field of ammonia nitrogen wastewater treatment

Active Publication Date: 2009-09-09
GUANGDONG INST OF MICROORGANISM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Anaerobic Baffled Reactor (ABR) consists of a downflow chamber, a baffle, an upflow chamber, an exhaust port and a water outlet. It is a new type of high-efficiency anaerobic re

Method used

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  • Method for anaerobic ammonia oxidation treatment of low-concentration ammonia nitrogen wastewater

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Experimental program
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Effect test

Embodiment 1

[0016] Inoculate the anaerobic sludge of the landfill leachate treatment plant and river sediment in the anaerobic baffle reactor at a ratio of 3:1, the concentrations of ammonia nitrogen and nitrite nitrogen are both 10mg / L, and the pH is 7.8 (Regulated with hydrochloric acid or sodium hydroxide, the same below) the ammonia nitrogen waste water enters the anaerobic baffle reactor 3 through the water inlet storage bottle 1, controls 0.33L / h with the constant flow peristaltic pump 2 between 1 and 3 The hydraulic retention time of the water is 48h, and the reaction temperature is controlled at 25°C. The treated wastewater is discharged from the water outlet 8, and the biogas is discharged from the exhaust port 7. After 3 months, the anaerobic ammonium oxidation in the anaerobic baffle reactor Bacteria become the dominant flora, and the removal rate of ammonia nitrogen and nitrite nitrogen reaches 80% for 5 consecutive days, indicating that the anaerobic baffled reactor has been s...

Embodiment 2

[0019] Inoculate the anaerobic sludge of the landfill leachate treatment plant and river sediment in the anaerobic baffle reactor at a ratio of 3:1, the concentrations of ammonia nitrogen and nitrite nitrogen are both 20mg / L, and the pH is 8.3 The ammonia nitrogen waste water enters the anaerobic baffle reactor 3 through the water storage bottle 1, and the constant flow peristaltic pump 2 between 1 and 3 is used to control the water volume to 0.33L / h, the hydraulic retention time is 48h, and the reaction temperature is controlled at After 3 months at 30°C, the anammox bacteria become the dominant bacterial group, and the removal rates of ammonia nitrogen and nitrite nitrogen reach 80% for 5 days, which means that the anaerobic baffled reactor has been successfully started;

[0020] After the reactor is successfully started, the ammonia nitrogen wastewater with an ammonia nitrogen concentration of 31.3mg / L, a nitrite nitrogen concentration of 34.9mg / L, and a pH of 8.3 enters 3 t...

Embodiment 3

[0022] Inoculate the anaerobic sludge of the landfill leachate treatment plant and river sediment in the anaerobic baffle reactor at a ratio of 3:1, the concentrations of ammonia nitrogen and nitrite nitrogen are both 15mg / L, and the pH is 8.0 The ammonia nitrogen waste water enters the anaerobic baffle reactor 3 through the water storage bottle 1, and the constant flow peristaltic pump 2 between 1 and 3 is used to control the water volume to 0.33L / h, the hydraulic retention time is 48h, and the reaction temperature is controlled at After 3 months at 28°C, the anammox bacteria became the dominant bacterial group, and the removal rates of ammonia nitrogen and nitrite nitrogen reached 80% for 5 days, indicating that the anaerobic baffled reactor had been successfully started;

[0023] The ammonia nitrogen concentration is 48.7mg / L, the nitrite nitrogen concentration is 49.5mg / L, and the ammonia nitrogen waste water that pH is 8.0 enters the anaerobic baffle reactor 3 through the ...

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Abstract

The invention relates to a method for the anaerobic ammonia oxidation treatment of low-concentration ammonia nitrogen wastewater. The method is characterized in that sludge containing anaerobic bacteria is inoculated into an anaerobic traverse baffle reactor under an anaerobic condition; the alkalescent ammonia nitrogen wastewater with 10 to 20mg/L of the concentrations of ammonia nitrogen and nitrite nitrogen enters the anaerobic traverse baffle reactor by an inlet water storage bottle, and a constant-current peristaltic pump is used for controlling the hydraulic stay time to be from 24 hours to 48 hours and the reaction temperature to be from 25 DEG C to 30 DEG C; if anaerobic ammonium oxidation bacteria become dominant flora and both the removal rates of the ammonia nitrogen and nitrite nitrogen reach 80 percent for 5 days, the anaerobic traverse baffle reactor is successfully started; then, other low-concentration ammonia nitrogen wastewater enters the anaerobic traverse baffle reactor by the inlet water storage bottle, and the hydraulic stay time is controlled to be from 12 hours to 48 hours; and finally, both the removal rates of the ammonia nitrogen and the nitrite nitrogen can reach about 80 percent.

Description

technical field [0001] The invention relates to a method for treating ammonia-nitrogen wastewater, in particular to a method for anaerobic ammonium oxidation treatment of low-concentration ammonia-nitrogen wastewater through an anaerobic baffle reactor. Background technique [0002] The environment is the basis for the survival and development of human beings. However, with the acceleration of industrialization and urbanization, excessive ammonia nitrogen enters the water body, seriously polluting the water body environment. According to the different ammonia nitrogen content, ammonia nitrogen wastewater can be divided into high concentration ammonia nitrogen wastewater (concentration greater than 500mg / L), medium concentration ammonia nitrogen wastewater (concentration range 50-500mg / L) and low concentration ammonia nitrogen wastewater (concentration range less than 50mg / L). kind. Among them, low-concentration ammonia nitrogen wastewater mainly comes from urban domestic se...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F101/16
CPCY02E50/30
Inventor 曾国驱朱月琪许玫英孙国萍
Owner GUANGDONG INST OF MICROORGANISM
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