CN-121974487-A - Anaerobic ammonia oxidizing bacteria carrier for ammonia nitrogen treatment of garbage penetrating fluid, preparation method and reactor thereof

CN121974487ACN 121974487 ACN121974487 ACN 121974487ACN-121974487-A

Abstract

The application provides an anaerobic ammonia oxidation bacteria carrier for garbage permeation liquid ammonia nitrogen treatment, which comprises a nutrition core ball, a slow-release regulating layer and an adhesion layer, wherein the nutrition core ball is used for providing nitrogen source precursors and microelements necessary for supporting growth of anaerobic ammonia oxidation bacteria, the slow-release regulating layer is used for regulating release rate of the nutrition core ball and preventing local nutrition concentration from being too high to inhibit growth of the anaerobic ammonia oxidation bacteria, and the adhesion layer is used for providing adhesion sites of the anaerobic ammonia oxidation bacteria, so that the anaerobic ammonia oxidation bacteria secrete extracellular polymers and form biological films. The application also provides a preparation method of the anaerobic ammonia oxidation bacteria carrier for the garbage permeation liquid ammonia nitrogen treatment. The application also provides a reactor containing the anaerobic ammonia oxidation bacteria carrier for the nitrogen treatment of the garbage infiltration liquid ammonia. The anaerobic ammonia oxidation bacteria carrier can improve the activity and growth rate of anaerobic ammonia oxidation bacteria, and further shorten the starting time of an anaerobic ammonia oxidation reactor.

Inventors

ZHANG CHENBIN
DUAN ZHIPENG
ZHAO LEI

Assignees

宁夏中科国通新能源有限公司

Dates

Publication Date: 20260505
Application Date: 20251230

Claims (10)

1. An anaerobic ammonia oxidizing bacteria carrier for garbage infiltration liquid ammonia nitrogen treatment is characterized by comprising the following components from inside to outside: The nutrition core ball is used for providing nitrogen source precursors and microelements required by the growth of the loaded anaerobic ammonium oxidation bacteria; the slow-release regulating and controlling layer is used for controlling the release rate of the nutrition core ball, and preventing the growth of anaerobic ammonia oxidizing bacteria from being inhibited due to the overhigh local nutrition concentration; and the adhesion layer is used for providing adhesion sites of the anaerobic ammonia oxidation bacteria so that the anaerobic ammonia oxidation bacteria secrete extracellular polymers and form a biological film.
2. The anaerobic ammonium oxidation bacteria carrier for treating ammonia nitrogen in garbage penetrating fluid according to claim 1, wherein the nutrient core ball comprises active carbon, nutrient salt, calcium carbonate and binding agent, and the nutrient salt contains nitrogen source precursors and microelements.
3. The anaerobic ammonium oxidation bacteria carrier for treating ammonia nitrogen in garbage penetrating fluid according to claim 1, wherein the slow-release regulating layer comprises chitosan, sodium alginate and calcium alginate, and the chitosan, sodium alginate and calcium alginate form a gel layer rich in micropores.
4. The anaerobic ammonia oxidizing bacteria carrier for ammonia nitrogen treatment of garbage penetrating fluid according to claim 1, wherein the adhesion layer is polyurethane sponge.
5. The method for preparing an anaerobic ammonium oxidation bacterial carrier for treating ammonia nitrogen in garbage penetrating fluid according to claim 1, which is characterized by comprising the following steps: step 1, kneading and extruding the nutrient solution, the activated carbon, the calcium carbonate and the binder into balls, and drying to obtain the nutrition core balls; step 2, immersing the nutrition core balls into a mixed solution of chitosan and sodium alginate, taking out the nutrition core balls, immersing the nutrition core balls into a Ca 2+ solution for crosslinking to form a slow-release regulating layer; And 3, embedding the nutrition core balls coated with the slow-release regulating layer into pores of the polyurethane sponge, and fixing the nutrition core balls through hot-press molding to obtain the anaerobic ammonia oxidizing bacteria carrier.
6. The method of claim 5, wherein the mixed solution of chitosan and sodium alginate contains a predetermined concentration of a soluble salt, and the soluble salt has the same composition as the nutrient solution.
7. The method according to claim 5, wherein the preparation steps of the nutritional core ball are as follows: step 11, pouring ammonium salt, nitrite and trace element salt into water according to a preset concentration and stirring to prepare nutrient solution; Step 12, adding a binder into the nutrient solution and uniformly stirring to form a mixed solution with certain viscosity, and uniformly mixing the activated carbon and the calcium carbonate according to a predetermined mass ratio to form mixed powder; Step 13, mixing the mixed solution and the mixed powder, and continuously stirring and kneading until the mixed solution and the mixed powder become mud balls; and 14, extruding the mixed mud ball into balls by an extruder, and drying to obtain the nutrition core balls.
8. The method of claim 7, wherein the binder is beta-cyclodextrin.
9. The method of claim 8, wherein the mass ratio of the activated carbon to the calcium carbonate to the beta-cyclodextrin is (45-55): 35-45): 10-20.
10. An anaerobic ammonia oxidation reactor for garbage infiltration liquid ammonia nitrogen treatment, which is characterized by comprising the anaerobic ammonia oxidation bacteria carrier according to any one of claims 1-4.

Description

Anaerobic ammonia oxidizing bacteria carrier for ammonia nitrogen treatment of garbage penetrating fluid, preparation method and reactor thereof Technical Field The application relates to the technical field of garbage treatment, in particular to an anaerobic ammonia oxidizing bacteria carrier for garbage permeation liquid ammonia nitrogen treatment, a preparation method and a reactor thereof. Background The landfill leachate is wastewater difficult to treat with complex components and high pollutant concentration, and is characterized by high ammonia nitrogen concentration, low C/N ratio and large amount of toxic and harmful substances. The traditional nitrification-denitrification process for treating the wastewater has the problems of large carbon source addition amount, high energy consumption, large sludge yield, limited denitrification efficiency and the like. Anaerobic ammoxidation is used as a novel biological denitrification technology, and provides a solution with great potential for treating landfill leachate by the remarkable advantages of no need of organic carbon source, low oxygen consumption, low sludge yield and the like. However, anaerobic ammonia oxidation bacteria (AnAOB) are sensitive to environmental conditions, the growth rate is slow, the generation period is as long as 10-15 days, and the starting time of an anaerobic ammonia oxidation reactor under normal temperature conditions is generally as long as 3-6 months for common heterotrophic bacteria only for several hours. Disclosure of Invention In view of the above, the application provides an anaerobic ammonia oxidation bacteria carrier for garbage permeation liquid ammonia nitrogen treatment, which can shorten the starting time of an anaerobic ammonia oxidation reactor. The application also provides a preparation method of the anaerobic ammonia oxidation bacteria carrier for the liquid ammonia nitrogen treatment of the garbage permeation. The application also provides a reactor containing the anaerobic ammonia oxidation bacteria carrier for the nitrogen treatment of the garbage infiltration liquid ammonia. An anaerobic ammonia oxidizing bacteria carrier for garbage infiltration liquid ammonia nitrogen treatment comprises the following components from inside to outside: The nutrition core ball is used for providing nitrogen source precursors and microelements required by the growth of the loaded anaerobic ammonium oxidation bacteria; the slow-release regulating and controlling layer is used for controlling the release rate of the nutrition core ball, and preventing the growth of anaerobic ammonia oxidizing bacteria from being inhibited due to the overhigh local nutrition concentration; and the adhesion layer is used for providing adhesion sites of the anaerobic ammonia oxidation bacteria so that the anaerobic ammonia oxidation bacteria secrete extracellular polymers and form a biological film. The preparation method of the anaerobic ammonia oxidation bacteria carrier for the nitrogen treatment of the garbage infiltration liquid ammonia comprises the following steps: step 1, kneading and extruding the nutrient solution, the activated carbon, the calcium carbonate and the binder into balls, and drying to obtain the nutrition core balls; step 2, immersing the nutrition core balls into a mixed solution of chitosan and sodium alginate, taking out the nutrition core balls, immersing the nutrition core balls into a Ca 2+ solution for crosslinking to form a slow-release regulating layer; And 3, embedding the nutrition core balls coated with the slow-release regulating layer into pores of the polyurethane sponge, and fixing the nutrition core balls through hot-press molding to obtain the anaerobic ammonia oxidizing bacteria carrier. An anaerobic ammonia oxidation reactor for garbage infiltration liquid ammonia nitrogen treatment comprises an anaerobic ammonia oxidation bacteria carrier. The anaerobic ammonia oxidation bacteria carrier has the technical effects that the nutrient core ball provides nutrient substances, the slow-release regulating layer regulates the release rate of the nutrient core microsphere, the adhesion layer provides adhesion sites, and continuous nutrition and stable nutrition environment can be provided for the anaerobic ammonia oxidation bacteria, so that the activity and the growth rate of the anaerobic ammonia oxidation bacteria carrier are improved, and the starting time of an anaerobic ammonia oxidation reactor is shortened. The anaerobic ammonia oxidation reactor has low field planting rate, and the nutrition core ball in the carrier can provide targeted nutrition to attract the anaerobic ammonia oxidation bacteria to field plant on the surface of the carrier, so that the starting time of the anaerobic ammonia oxidation reactor is shortened. Detailed Description Embodiments of the present application will be described in detail below. The following examples are only for more clearly illustrating the technical asp