CN-224212514-U - High ammonia nitrogen wastewater treatment device based on zeolite and MBR combined process

CN224212514UCN 224212514 UCN224212514 UCN 224212514UCN-224212514-U

Abstract

The utility model discloses a high ammonia nitrogen wastewater treatment device based on a zeolite and MBR combined process, which comprises an adjusting tank, a biochemical reaction tank, an MBR membrane tank, a reflux tank and a water producing tank, wherein the biochemical reaction tank is divided into an anoxic zone and an aerobic zone by a first partition board, a diving stirrer is arranged in the anoxic zone, an aeration device is arranged in the aerobic zone, zeolite particles are filled in the anoxic zone, a grid mesh for intercepting the zeolite particles is arranged at an overflow port of the aerobic zone, an MBR membrane component is arranged in the MBR membrane tank, the adjusting tank is connected with the biochemical reaction tank through a lifting pump and a lifting pipeline, the anoxic zone, the aerobic zone, the MBR membrane tank and the reflux tank are sequentially overflowed and connected, the reflux tank is connected with the anoxic zone through a reflux pump and an external reflux pipeline, and the MBR membrane component is connected with the water producing tank through a water producing pump and a water producing pipe. The device can improve the treatment efficiency and the treatment effect of ammonia nitrogen wastewater and improve the quality of effluent.

Inventors

DUAN XUEYING
CHEN MING
WU KELIANG
WANG HUAILIN
GUAN XIAOLIN
MA HAO

Assignees

江苏凯米膜科技股份有限公司
江苏凯米膜装备科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250527

Claims (10)

1. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process is characterized by comprising a biochemical reaction tank (3), an MBR membrane tank (4), a reflux tank (5) and a water producing tank (6), wherein the biochemical reaction tank (3) is divided into an anoxic zone (3 a) and an aerobic zone (3 b) by a first partition plate (3 c), a submersible stirrer (3 g) and zeolite particles (3 e) are arranged in the anoxic zone (3 a), the zeolite particles (3 e) are in a fluidized state under the action of the stirrer, an aeration device (3 h) is arranged in the aerobic zone (3 b), a grid (3 i) for intercepting the zeolite particles (3 e) is arranged at an overflow port of the aerobic zone (3 b), an MBR membrane component (4 a) is arranged in the MBR membrane tank (4), the anoxic zone (3 a), the aerobic zone (3 b), the MBR membrane tank (4) and the reflux tank (5) are sequentially connected in an overflow mode, and the reflux tank (5) is connected with the anoxic zone (3 a) through a reflux pump (5 a) and an external reflux pipeline, and the MBR membrane component (4 a) is connected with the water producing pipe (6).
2. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, further comprising a regulating tank (2), wherein the regulating tank (2) is connected with the biochemical reaction tank (3) through a lifting pump (2 a) and a lifting pipeline, and a grid tank (1) is arranged on the water inlet side of the regulating tank (2).
3. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, further comprising a cyclone separator (9) and a chemical regeneration tank (10), wherein an inlet of the cyclone separator (9) is connected with the biochemical reaction tank (3) and the MBR membrane tank (4) through a first sludge pump (9 a) and a second sludge pump (9 b) respectively, a top outlet of the cyclone separator (9) is connected with the MBR membrane tank (4) and the biochemical reaction tank (3) through a third sludge pump (9 c) and a fourth sludge pump (9 h) respectively, a bottom outlet of the cyclone separator (9) is connected with the biochemical reaction tank (3) and the chemical regeneration tank (10) through pipelines respectively, and zeolite in the chemical regeneration tank (10) returns to the biochemical reaction tank (3) after chemical regeneration.
4. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1 or 3, further comprising a first dosing system, wherein the first dosing system comprises an acid liquid storage tank (7) and an acid adding pump (7 a), and the acid liquid storage tank (7) is respectively connected with a water producing port of the membrane assembly (4 a), the MBR membrane tank (4) and the chemical regeneration tank (10) through the acid adding pump (7 a) and a pipeline.
5. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, wherein the aerobic zone (3 b) is provided with a mixed liquor reflux pump (3 f), and the aerobic zone (3 b) is connected with the anoxic zone (3 a) through the mixed liquor reflux pump (3 f) and an inner reflux pipe.
6. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, wherein the aerobic zone (3 b) is divided into a first aerobic zone and a second aerobic zone by a partition plate (3 d), and the first aerobic zone and the second aerobic zone are communicated with each other through the bottom of the partition plate (3 d).
7. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 6, wherein the bottom of the aerobic zone (3 b) and the side wall of the second aerobic zone are both provided with an aerator (3 k), the bottom of the MBR membrane component (4 a) is provided with a membrane scrubbing aeration device, and the membrane scrubbing aeration device and the aerator (3 k) share one set of aeration device (3 h).
8. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, wherein the water producing tank (6) is connected with the water producing port of the membrane assembly (4 a) through a backwash pump (6 a) and a backwash pipe.
9. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process according to claim 1, further comprising a second dosing system, wherein the second dosing system comprises an alkali liquor storage tank (8) and an alkali adding pump (8 a), and the alkali liquor storage tank (8) is connected with a water producing port of the membrane assembly (4 a) through the alkali adding pump (8 a) and a pipeline.
10. The high ammonia nitrogen wastewater treatment device based on the zeolite and MBR combined process as claimed in claim 1, wherein the zeolite particles (3 e) are artificial zeolite or natural zeolite, and the particle size of the zeolite particles is 2-3 mm.

Description

High ammonia nitrogen wastewater treatment device based on zeolite and MBR combined process Technical Field The utility model relates to the technical field of wastewater treatment, in particular to a high ammonia nitrogen wastewater treatment device based on a zeolite and MBR combined process. Background The high-concentration ammonia nitrogen wastewater is directly discharged and has great harm, but the treatment difficulty and the cost are high, and the treatment methods widely used at present are a break point chlorination method, a stripping method, a chemical precipitation method, a biological method and an adsorption method. The method of adding chlorine at the break point and chemical precipitation needs to add a medicament into the wastewater, and has the defects of secondary pollution to the environment and poor economical efficiency. Biological methods and adsorption methods are favored in the field of treating ammonia nitrogen wastewater because of the advantages of environmental protection, low cost, simplicity, easiness in operation and the like, but the biological methods have the defects of unsatisfactory treatment effect, large occupied area and the like, and the adsorption methods have the defect of reduced treatment capacity caused by rapid saturation of the adsorbent. Disclosure of utility model In order to solve the problems, the utility model provides a high ammonia nitrogen wastewater treatment device based on a zeolite and MBR combined process. The technical scheme adopted by the utility model is as follows: A high ammonia nitrogen wastewater treatment device based on a zeolite and MBR combined process comprises a biochemical reaction tank, an MBR membrane tank, a reflux tank and a water producing tank, wherein the biochemical reaction tank is divided into an anoxic zone and an aerobic zone by a first partition board, a submerged agitator and zeolite particles are arranged in the anoxic zone, the zeolite particles are in a fluidized state under the action of the agitator, an aeration device is arranged in the aerobic zone, a grid for intercepting the zeolite particles is arranged at an overflow port of the aerobic zone, an MBR membrane module is arranged in the MBR membrane tank, the anoxic zone, the aerobic zone, the MBR membrane tank and the reflux tank are sequentially and overflowed and connected, the reflux tank is connected with the anoxic zone through a reflux pump and an external reflux pipeline, and the MBR membrane module is connected with the water producing tank through a water producing pump and a water producing pipe. Further, the biochemical reaction device also comprises an adjusting tank and a grid tank, wherein the adjusting tank is connected with the biochemical reaction tank through a lifting pump and a lifting pipeline, and the grid tank is arranged on the water inlet side of the adjusting tank. The adjusting tank is used for adjusting water quantity and water quality, the grid tank is used for intercepting larger impurities of particles, the load of a subsequent treatment unit is lightened, and subsequent treatment equipment is protected. Further, the device also comprises a cyclone separator and a chemical regeneration tank, wherein an inlet of the cyclone separator is connected with the biochemical tank and the MBR membrane tank through a first sludge pump and a second sludge pump respectively, a top outlet of the cyclone separator is connected with the MBR membrane tank and the biochemical tank through a third sludge pump and a fourth sludge pump respectively, a bottom outlet of the cyclone separator is connected with the biochemical tank and the chemical regeneration tank through pipelines respectively, and zeolite in the chemical regeneration tank returns to the biochemical tank after chemical regeneration. In order to prevent a small amount of zeolite entering the MBR membrane tank through a grid from adversely affecting the membrane assembly, a cyclone separator is arranged on the sludge discharge pipeline of the biochemical tank and the MBR membrane tank so as to separate sludge from zeolite. When the system is in normal operation, a valve and a second sludge pump on a sludge discharge pipeline of the MBR membrane tank are opened, the valve and the first sludge pump on the sludge discharge pipeline of the biochemical tank are closed, sludge in the MBR membrane tank enters the cyclone separator to be separated, the separated sludge returns to the MBR membrane tank through a third sludge pump, the separated zeolite enters the chemical regeneration tank, when the zeolite adsorbent needs to be subjected to chemical regeneration, the valve and the second sludge pump on the sludge discharge pipeline of the MBR membrane tank are closed, the valve and the first sludge pump on the sludge discharge pipeline of the biochemical tank are opened, the sludge in the biochemical tank enters the cyclone separator to be separated, the separated sludge returns to the bioche