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A method of strengthening SBR to realize stable nitrosation by using adsorbent ammonia nitrogen material

A technology for adsorbing ammonia and stabilizing ammonia, which is applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc. It can solve the problems of reducing nitrosation rate, high energy consumption, and harsh operating conditions. Achieve the effects of high processing efficiency, low investment cost and simple method

Active Publication Date: 2020-12-22
SOUTH CHINA UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to achieve nitrosation, people generally control high temperature and low dissolved oxygen to inhibit nitrite oxidizing bacteria and then achieve nitrosation, but this method has the disadvantages of harsh operating conditions, high energy consumption, and easy reduction of nitrosation rate and conversion to complete nitration.

Method used

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  • A method of strengthening SBR to realize stable nitrosation by using adsorbent ammonia nitrogen material
  • A method of strengthening SBR to realize stable nitrosation by using adsorbent ammonia nitrogen material
  • A method of strengthening SBR to realize stable nitrosation by using adsorbent ammonia nitrogen material

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Effect test

Embodiment 1

[0031] A kind of method utilizing the material of adsorbing ammonia nitrogen to strengthen SBR stable nitrosation, comprises the following steps:

[0032] (1) Inoculate the mature nitrification sludge (MLSS: 3500mg / L) into the SBR reactor (volume 5L), and then add 10g / L to the SBR reactor (add 10g of ammonia nitrogen adsorption material per 1L of ammonia nitrogen wastewater) The material for adsorbing ammonia nitrogen (artificially synthesized zeolite powder), the concentration of ammonia nitrogen in the influent water is 200mg / L, the pH of the solution in the SBR reactor is controlled to be 7.5, and the biochemical reaction is carried out at room temperature with continuous aeration (DO is controlled above 1mg / L). When more than half of the ammonia nitrogen in the wastewater is converted into nitrous nitrogen, stop the aeration, let it settle for 0.5h, and discharge part of the water in the SBR reactor (part of the water is 50% of the wastewater volume in the SBR reactor). to...

Embodiment 2

[0039] A kind of method utilizing the material of adsorbing ammonia nitrogen to strengthen SBR stable nitrosation, comprises the following steps:

[0040](1) Inoculate the mature nitrification sludge (MLSS is 3500mg / L) into the SBR reactor (volume 5L), and then add 50g / L to the SBR reactor (add 50g of ammonia nitrogen adsorption material per 1L of ammonia nitrogen wastewater) The material for adsorbing ammonia nitrogen (natural zeolite powder), the concentration of ammonia nitrogen in the influent water is 600mg / L, the pH of the solution in the SBR reactor is controlled to be 8 (sodium bicarbonate / sodium carbonate buffer solution controls the pH to be 8), continuous aeration is at room temperature Carry out biochemical reaction, DO is controlled at about 2mg / L, when half or more of the ammonia nitrogen in the wastewater is converted into nitrous nitrogen, stop the aeration, let it settle for 1.5 hours, and discharge part of the water in the SBR reactor (part of the water is 60...

Embodiment 3

[0047] A kind of method utilizing the material of adsorbing ammonia nitrogen to strengthen SBR stable nitrosation, comprises the following steps:

[0048] (1) Inoculate the mature nitrification sludge (MLSS is 3500mg / L) into the SBR reactor (volume 5L), and then add 100g / L to the SBR reactor (add 100g of ammonia nitrogen adsorption material per 1L of ammonia nitrogen wastewater) The material for adsorbing ammonia nitrogen (natural zeolite powder), the concentration of ammonia nitrogen in the influent water is 1000mg / L, the pH of the solution in the SBR reactor is controlled to 9 (sodium bicarbonate / sodium carbonate buffer solution controls the pH to 9), continuous aeration is at room temperature Carry out biochemical reaction, DO is controlled at about 3mg / L, when half or more of the ammonia nitrogen in the wastewater is converted into nitrous nitrogen, stop the aeration, let it settle for 2 hours, and discharge part of the water in the SBR reactor (part of the water is SBR 65...

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Abstract

The invention belongs to the technical field of ammonia nitrogen wastewater treatment, and discloses a method for realizing stable nitrosation by an ammonia nitrogen adsorption material via reinforcing an SBR. The method is characterized in that (1) nitrification sludge is inoculated into an SBR reactor; the ammonia nitrogen adsorption material is added; water is input; the pH is controlled; aeration is performed; when one half or more of ammonia nitrogen in wastewater is converted into nitrite, the aeration stops; static settlement is performed; partial water is discharged out; one reaction period is completed; (2) inlet water is replenished into the SBR reactor discharging partial water; the pH is controlled; the aeration is performed; when one half or more of ammonia nitrogen in the wastewater is converted into nitrite, the aeration stops; static settlement is performed; partial water is discharged out; another one reaction period is completed; circulation is performed in such a way; when the nitrosation rate reaches 90 percent or higher, the condition that the nitrosation domestication is succeeded is shown; continuous operation is performed for a plurality of reaction periods; the stable nitrosation is realized. The method has the advantages that the method is simple; the nitrosation is high; the nitrosation is stably realized.

Description

technical field [0001] The invention belongs to the technical field of environmental protection ammonia nitrogen wastewater treatment, and relates to a method for stabilizing nitrosation of ammonia nitrogen wastewater, in particular to a method for strengthening SBR to stabilize nitrosation by using a material for adsorbing ammonia nitrogen. Background technique [0002] At present, ammonia nitrogen wastewater treatment methods include ammonia stripping method, ammonia adsorption method, ion exchange method, break point chlorination method and other physicochemical methods and conventional nitrification and denitrification biological denitrification method. Compared with these methods, the new biological denitrification method has the advantages of good treatment effect, low energy consumption, carbon source saving, and no secondary pollution. It is the most economical denitrification method. The new biological nitrogen removal technology marked by short-range nitrification-...

Claims

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Application Information

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IPC IPC(8): C02F3/12C02F101/16
CPCC02F3/1226C02F3/1263C02F2101/16Y02W10/10
Inventor 汪晓军陈婧陈振国冯兴会
Owner SOUTH CHINA UNIV OF TECH
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