CN110642379A

CN110642379A - Novel municipal sewage process with nitrogen and phosphorus removal functions

Info

Publication number: CN110642379A
Application number: CN201910933826.6A
Authority: CN
Inventors: 李洋
Original assignee: Beijiaoyuan Ecological Environment Technology Beijing Co Ltd
Current assignee: Beijiaoyuan Ecological Environment Technology Beijing Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-01-03

Abstract

The invention discloses a novel municipal sewage process with nitrogen and phosphorus removal functions, which belongs to the technical field of sewage treatment and comprises a water inlet system, a fluidization system, a water outlet system and a precipitation system; the fluidization system comprises a stirrer and an aeration system; the water inlet system is intake and is passed through the inlet tube through the intake pump and insert to the anaerobism pond, and the anaerobism pond flows in the oxygen deficiency MBBR pond through the basin nature, and the oxygen deficiency MBBR pond flows in the oxygen boosting MBBR pond according to the pipeline nature, and the delivery port is in the pipeline inserts to two heavy ponds, reduces the energy consumption, the nitrogen and phosphorus removal can the reinforce, and is effectual.

Description

Novel municipal sewage process with nitrogen and phosphorus removal functions

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a novel municipal sewage process with nitrogen and phosphorus removal functions.

Background

The traditional activated sludge process can achieve higher organic matter removal and carbon removal efficiency simply, so that most of China, especially urban sewage treatment plants designed and constructed in early stages, adopt the traditional activated sludge process. With the increasing attention of human beings on the problem of environmental protection, the discharge amount of sewage is rapidly increased, the requirements for sewage treatment are increasingly strict, countries in the world including China put forward increasingly higher requirements on sewage treatment rate and sewage treatment standards, and the traditional process is difficult to meet the continuously improved requirements on the aspects of treatment versatility, high efficiency, stability and economic rationality. Therefore, the method has wide practical significance for improving and transforming the early-built sewage treatment plant, improving the sewage treatment capacity of the sewage treatment plant and improving the economic benefit of the system.

The traditional activated sludge process is a primary sedimentation tank-CMAS tank-secondary sedimentation tank, wherein the CMAS tank has an inner ring structure and an outer ring structure, the inner ring is a sludge recovery area, the outer ring is an aeration area and runs in a plug flow mode, and the process has the defects that the active recovery area is arranged on a sludge return path, the space utilization rate is low, an anoxic section is not available, complete denitrification cannot be realized, the total nitrogen of effluent is mainly nitrate nitrogen, and the anaerobic section is not available, so that almost no biological phosphorus removal capability exists. The sludge aging can occur when the water temperature is low in winter, the sludge expands in summer, the output of the residual sludge is gradually increased, the treatment is troublesome, the cost is high, and the effluent is difficult to reach the standard.

Disclosure of Invention

The invention aims to provide a novel municipal sewage processing liquid with nitrogen and phosphorus removal functions to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a new technology of municipal administration sewage with nitrogen and phosphorus removal, includes water intake system, fluidization system, effluent system and sedimentation system, water intake system includes intake chamber, inlet tube and water pump, fluidization system includes agitator, aeration systems, the intake chamber is connected the inlet tube, the intake chamber passes through the inlet tube through the intake pump and inserts to the anaerobism pond, the anaerobism pond naturally flows in to oxygen deficiency MBBR pond through the pipeline, agitating unit is established to oxygen deficiency MBBR pond, it has suspended filler to fill in the oxygen deficiency MBBR pond, oxygen deficiency MBBR pond water outlet department establishes the interception screen cloth, oxygen deficiency MBBR pond naturally flows in the oxygen enrichment MBBR pond through the pipeline, it has suspended filler to fill in the oxygen enrichment MBBR pond, the bottom in the oxygen enrichment MBBR pond is provided with the aeration pipe, be provided with the aeration head on the aeration pipe, the aeration union coupling is in the aeration main pipe outside the oxygen enrichment MBBR pond, the aeration main pipe is connected with the air compressor machine, an intercepting screen is arranged at the water outlet of the oxygen-enriched MBBR tank, and the water outlet is connected into a secondary sedimentation tank through a pipeline.

As a further preferable embodiment of the present invention: the suspended filler in the MBBR tank of the biochemical system uses novel magnetic nano Fe3O4 and food-grade high-density polyethylene as raw materials.

As a further preferable embodiment of the present invention: in the fluidization system, the number of the water pumps is reduced to ensure normal workload, and the water pumps are used for reducing power consumption.

As a further preferable embodiment of the present invention: the stirring device comprises a driving motor, a support bearing, a stirring shaft and a stirring paddle, wherein the stirring shaft is fixed on an output shaft of the driving motor, the lower end of the stirring shaft is fixedly connected with the support bearing, the stirring paddle which is arranged intermittently is fixed on the stirring shaft, and the support bearing is arranged at the bottom of the oxygen-enriched MBBR pool and the oxygen-deficient MBBR pool.

As a further preferable embodiment of the present invention: the aeration pipe is of an annular structure, and 6 aeration heads with the diameter of 5cm are arranged on the aeration pipe.

Compared with the prior art, the invention has the beneficial effects that: the invention can improve the denitrification and dephosphorization effect of the sewage treatment system, when the sewage treatment system is used for sewage treatment, the sewage in the water inlet tank firstly enters the anaerobic tank on the outer ring of the main reaction tank and flows into the anoxic MBBR tank filled with the suspended filler on the inner ring, thereby preventing sludge loss, relieving sludge expansion, simultaneously allowing microorganisms to grow on the surface of the filler and not to be easily taken away by water, moreover, the stirring device is arranged in the anoxic MBBR tank, so that bubbles can be continuously collided, and simultaneously the filler and the sewage are in a completely mixed state under the stirring state, thereby greatly improving the treatment effect and efficiency, meanwhile, the sewage treatment system is provided with the oxygen-enriched MBBR tank, because of the existence of the suspended carrier filler of the oxygen-enriched MBBR tank, the occupied area of structures can be reduced, the investment is saved, the sewage treated by the anaerobic tank of the sewage treatment system sequentially passes through the anoxic MBBR tank and the oxygen-enriched MBBR tank and then is settled by the secondary sedimentation tank, the oxygen-, the treatment effect can be improved, and the filler is easy to float on the water surface after the filler is added into the oxygen-enriched MBBR tank, so that the aeration device is arranged at the bottom of the oxygen-enriched MBBR tank, the filler can be fully fluidized, and the filler can be fully exerted. This sewage treatment system's oxygen deficiency MBBR pond is provided with agitating unit, can make mud and sewage fully contact the mixture, avoids the layering of feed liquid in the pond to improve the anaerobism efficiency of nitrifying.

Detailed Description

The present invention will be further described with reference to the following examples.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.

The invention provides a novel municipal sewage process with nitrogen and phosphorus removal functions, which comprises a water inlet system, a fluidization system, a water outlet system and a precipitation system, wherein the water inlet system comprises a water inlet tank, a water inlet pipe and a water pump, and the fluidization system comprises a stirrer and an aeration system. The inlet tube is connected to the intake chamber, the intake chamber passes through the intake pipe through the intake pump and inserts to the anaerobism pond, anaerobism pond warp tube way nature flows in to oxygen deficiency MBBR pond, agitating unit is established in the oxygen deficiency MBBR pond, it has the suspension filler to fill in the oxygen deficiency MBBR pond, oxygen deficiency MBBR pond water outlet department establishes the interception screen cloth, oxygen deficiency MBBR pond warp tube way nature flows in oxygen boosting MBBR pond, it has the suspension filler to fill in the oxygen boosting MBBR pond, bottom in the oxygen boosting MBBR pond is provided with the aeration pipe, be provided with the aeration head on the aeration pipe, the aeration union coupling has the aeration person in charge who is in outside the oxygen boosting MBBR pond, the aeration person in charge is connected with the air compressor machine, oxygen boosting MBBR pond water outlet department establishes the interception screen cloth, the water outlet is inserted to two.

Specifically, the suspended filler in the MBBR tank of the biochemical system uses novel magnetic nano Fe3O4 and food-grade high-density polyethylene as raw materials.

Specifically, in the fluidization system, the number of water pumps is reduced to ensure normal workload, and the water pumps are used for reducing power consumption.

Concretely, agitating unit includes driving motor, support bearing, (mixing) shaft and stirring rake, be fixed with the (mixing) shaft on driving motor's the output shaft, the lower extreme and the support bearing of (mixing) shaft are connected fixedly, be fixed with the stirring rake of intermittent type range on the (mixing) shaft, at driving motor during operation, driving motor drive (mixing) shaft rotates, and then drives the stirring rake and stir sewage and mix, support bearing is all installed to the bottom of the pond in oxygen boosting MBBR pond, oxygen deficiency MBBR pond.

Specifically, the aeration pipe is of an annular structure, and 6 aeration heads with the diameter of 5cm are arranged on the aeration pipe.

The working principle of the invention is as follows: when the sewage treatment system is used for sewage treatment, sewage in the water inlet tank firstly enters the anaerobic tank on the outer ring of the main reaction tank, flows into the anoxic MBBR tank filled with suspended filler at the inner ring, meanwhile, the stirring device arranged in the anoxic MBBR tank starts to work, the stirring shaft is driven by the driving motor to rotate, and then the stirring paddle is driven to rotate, continuous collision is carried out on generated bubbles, and meanwhile, the filler and the sewage are in a complete mixing state under the stirring state.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The new municipal sewage process with nitrogen and phosphorus removal is characterized by comprising a water inlet system, a fluidization system, a water outlet system and a precipitation system, wherein the water inlet system comprises a water inlet tank, a water inlet pipe and a water pump, the fluidization system comprises a stirrer and an aeration system, the water inlet tank is connected with the water inlet pipe, the water inlet tank is connected to an anaerobic tank through the water inlet pipe by a water inlet pump, the anaerobic tank naturally flows into an anoxic MBBR tank through a pipeline, the anoxic MBBR tank is provided with a stirring device, the anoxic MBBR tank is filled with suspended fillers, an interception screen is arranged at the water outlet of the anoxic MBBR tank, the anoxic MBBR tank naturally flows into an oxygen-enriched MBBR tank through a pipeline, the oxygen-enriched MBBR tank is filled with suspended fillers, the bottom in the oxygen-enriched MBBR tank is provided with an aeration pipe, the aeration head is arranged on the aeration pipe, and the aeration pipe is connected with an aeration main pipe outside the oxygen, the aeration main pipe is connected with an air compressor, an interception screen is arranged at the water outlet of the oxygen-enriched MBBR tank, and the water outlet is connected into a secondary sedimentation tank through a pipeline.

2. The novel municipal sewage treatment process with nitrogen and phosphorus removal functions as claimed in claim 1, wherein the suspended filler in the MBBR tank of the biochemical system uses novel magnetic nano Fe3O4 and food-grade high-density polyethylene as raw materials.

3. The novel municipal sewage treatment process with nitrogen and phosphorus removal function according to claim 1, wherein the number of water pumps in the fluidization system is reduced to ensure normal work load for reducing power consumption.

4. The new municipal sewage technology with nitrogen and phosphorus removal functions as claimed in claim 1, wherein the stirring device comprises a driving motor, a support bearing, a stirring shaft and stirring paddles, the stirring shaft is fixed on an output shaft of the driving motor, the lower end of the stirring shaft is fixedly connected with the support bearing, the stirring shaft is fixedly provided with the stirring paddles which are arranged intermittently, and the support bearings are installed at the bottoms of the oxygen-enriched MBBR tank and the oxygen-deficient MBBR tank.

5. The novel municipal sewage treatment process with nitrogen and phosphorus removal functions as claimed in claim 1, wherein the aeration pipe is of an annular structure, and 6 aeration heads with the diameter of 5cm are arranged on the aeration pipe.