CN213037613U - Domestic sewage treatment system - Google Patents
Domestic sewage treatment system Download PDFInfo
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- CN213037613U CN213037613U CN202020072048.4U CN202020072048U CN213037613U CN 213037613 U CN213037613 U CN 213037613U CN 202020072048 U CN202020072048 U CN 202020072048U CN 213037613 U CN213037613 U CN 213037613U
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Abstract
A domestic sewage treatment system comprises a water inlet treatment device, an aeration grit chamber, an anaerobic tank MBBR (moving bed biofilm reactor) tank, an ultraviolet sterilization tank and a biogas residue treatment system; the aeration grit chamber is provided with a feeding hole and a discharging hole, the water outlet of the water inlet treatment device is connected with the feeding hole of the aeration grit chamber, a discharging pipeline of the aeration grit chamber is provided with a branch, the branch I is connected to the water inlet of the anaerobic tank, and the branch II is connected to an external biogas residue treatment system through a biogas residue conveying pipeline; a biogas collecting tank is connected above the anaerobic tank; the water outlet of the anaerobic tank is connected to the MBBR tank; and a water outlet of the MBBR tank is connected with the ultraviolet sterilization tank. Has the advantages that: by using the aeration grit chamber, the dual purposes of precipitation collection and one-tank construction of an aerobic environment are realized; the anaerobic tank is provided with the methane gas collecting tank to realize methane collection, and the MBBR tank has the characteristics of small occupied area, low maintenance cost and the like, and the ultraviolet sterilization tank is arranged to realize sterilization of the treated sewage.
Description
Technical Field
The utility model relates to a sewage treatment field, concretely relates to domestic sewage treatment system.
Background
The domestic sewage is a general name of sewage discharged into a town sewage system by urban sewage, the urban domestic sewage mainly comprises starch, cellulose, protein, mineral oil and the like, the chemical oxygen demand, total nitrogen, biological oxygen demand and total phosphorus of the substances are higher, and the urban domestic sewage still has the phenomenon that the total phosphorus and the total nitrogen exceed the standard even through secondary biochemical treatment and primary physical treatment, so that if the water flows into a river, the water resource nutrient content is possibly exceeded the standard, and red tide is caused; the domestic sewage comprises toilet sewage, intercepted rainwater and other sewage types, is collected by a municipal drainage pipe network and is conveyed to a sewage treatment plant for treatment, a large amount of solid waste and particle suspended matters are often accompanied in the domestic sewage, the existence of the solid waste can influence the sewage treatment operation, odor can be generated in the decomposition process of the solid waste which is easy to decompose, the solid waste which is not easy to decompose can easily cause pipeline blockage after entering the next treatment flow along with a pipeline, the treatment effect is influenced, the domestic sewage contains organic matters containing starch, cellulose, protein, mineral oil and the like, the problem of water eutrophication is solved due to the existence of the organic matters, bacteria are also easy to breed in the sewage, and the bacterial pollution risk exists due to the breeding of a large amount of bacteria, therefore, the domestic sewage treatment system can effectively filter the solid waste and simultaneously effectively control the content of the organic matters in the sewage, ensuring the sewage treatment quality.
The existing sewage treatment is generally carried out by an AAO process, which is a short name of anaerobic-anoxic-aerobic combined process and consists of three sections of biological treatment devices. The difference between the single-stage AO process and the single-stage AO process lies in that an anaerobic reactor is arranged at the front stage, and aims to degrade and remove part of refractory organic matters in the wastewater through an anaerobic process, further improve the biodegradability of the wastewater, provide a carbon source suitable for a denitrification process for a subsequent anoxic stage, and finally achieve the purpose of efficiently removing COD, BOD, N and P.
The prior AAO system has the technical defects of long sewage treatment period, large occupied area, high energy consumption, no treatment measures for bacteria in water and the like, so that the popularization of the prior sewage treatment system is limited.
SUMMERY OF THE UTILITY MODEL
The utility model provides a domestic sewage treatment system to prior art's not enough, this sewage treatment system has effectively simplified current sewage treatment system's process flow, has that area is little, the energy consumption is low and can effectively exterminate the characteristics of bacterium in the water.
The utility model relates to a domestic sewage treatment system which comprises a water inlet treatment device, an aeration grit chamber, an anaerobic tank, an MBBR tank, an ultraviolet sterilization tank and a biogas residue treatment system;
the aeration grit chamber is provided with a feeding hole and a discharging hole, the water outlet of the water inlet treatment device is connected with the feeding hole of the aeration grit chamber, the discharging pipeline of the aeration grit chamber is provided with a branch, the branch I is connected to the water inlet of the anaerobic tank, and the branch II is connected to an external biogas residue treatment system through a biogas residue conveying pipeline;
a biogas collecting tank is connected above the anaerobic tank; the water outlet of the anaerobic tank is connected to the MBBR tank; and a water outlet of the MBBR tank is connected with the ultraviolet sterilization tank.
Further, an aeration device is arranged in the MBBR tank.
Further, the water treatment device comprises:
and the grid pool is connected with the domestic sewage outlet pipe and is used for removing floaters and suspended matters in the domestic sewage.
And the water inlet of the adjusting tank is connected with the grid tank, and the water outlet of the adjusting tank is connected with the aeration grit chamber and is used for adjusting the pH value and the water quality in the domestic sewage.
Technical scheme's beneficial effect lies in: the dual-purpose characteristics of one pool of sediment collection and aerobic environment construction are realized by using the aeration grit chamber; the biogas collection tank is arranged on the anaerobic tank, so that biogas is collected, and the effective utilization of sewage is improved; by the arrangement of the MBBR tank, the construction investment, the occupied area and the maintenance cost are low; through setting up the ultraviolet sterilization pond, realized the sterilization to the sewage after handling, further ensured the quality of water of discharging sewage, effectively protected the environment.
Drawings
Figure 1 is the utility model discloses a domestic sewage treatment system schematic diagram.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to specific examples.
The utility model relates to a domestic sewage treatment system which comprises a water inlet treatment device, an aeration grit chamber, an anaerobic tank, an MBBR tank, an ultraviolet sterilization tank and a biogas residue treatment system; the aeration grit chamber is provided with a feeding hole and a discharging hole, the water outlet of the water inlet treatment device is connected with the feeding hole of the aeration grit chamber, the discharging pipeline of the aeration grit chamber is provided with a branch, the branch I is connected to the water inlet of the anaerobic tank, and the branch II is connected to an external biogas residue treatment system through a biogas residue conveying pipeline; a biogas collecting tank is connected above the anaerobic tank; the water outlet of the anaerobic tank is connected to the MBBR tank; and a water outlet of the MBBR tank is connected with the ultraviolet sterilization tank. And an aeration device is arranged in the MBBR tank.
The water inlet treatment device comprises a grid pool, which is connected with a domestic sewage outlet pipe and is used for removing floating objects and suspended matters in the domestic sewage. And the water inlet of the adjusting tank is connected with the grid tank, and the water outlet of the adjusting tank is connected with the aeration grit chamber and is used for adjusting the pH value and the water quality in the domestic sewage.
The utility model discloses an use the aeration grit chamber, on the one hand carry out sedimentation treatment once more to the sewage after the water treatment facilities handles, further purification treatment quality of water, on the other hand, the aeration grit chamber is equivalent to good oxygen pond. The aeration grit chamber realizes dual purposes.
For effectively improving the utilization ratio of sewage, one of the characteristics of the utility model is that the methane gas collecting tank is connected above the anaerobic tank, and the methane generated by sewage treatment can be effectively collected by the methane gas collecting tank, thereby providing combustible fuel for users.
The utility model discloses a another characteristics are as good oxygen pond for using the MBBR pond, fill through the MBBR suspended biological filler and generate novel good oxygen pond, make advantages such as whole domestic sewage treatment system debugging cycle is short, load capacity is strong, the energy consumption is low, the small investment, operation management is simple and convenient, play water stabilization of water quality. After the aerobic treatment of the aeration grit chamber and the anaerobic treatment of the anaerobic tank, the sewage passes through the MBBR tank again, so that the sewage treatment efficiency can be effectively improved.
MBBR has traditional fluidized bed and biological contact oxidation method both advantages concurrently, is a novel efficient sewage treatment method, relies on the aeration in the aeration tank and the lifting action of rivers to make the carrier be in fluidized state, and then forms suspension growth's activated sludge and attached growth's biomembrane, and this just makes moving bed biomembrane use whole reactor space, and full play adheres to looks and suspension looks biology both superiority, makes it raise the advantage and keeps away the shortcoming, mutual complementation. Unlike previous packings, suspended packings are called "mobile biofilms" because they are able to come into contact with the sewage many times.
The main advantages of the domestic sewage treatment system by using the MBBR tank include high treatment load; the whole oxidation tank has small volume, reduces the capital investment, does not need sludge reflux equipment and backwashing equipment in the MBBR process, reduces the equipment investment, is simple and convenient to operate, and reduces the running cost of sewage; the whole MBBR technology has low sludge yield, reduces the sludge treatment cost, does not need a filler bracket in the MBBR, is directly added, and saves the installation time and the cost.
The utility model discloses an another key point lies in having set up the ultraviolet sterilization pond, the setting up of ultraviolet sterilization pond has realized further guaranteeing to discharge the quality of water of sewage to the sterilization of handling back sewage, has effectively protected the environment.
The domestic sewage treatment system provided by the utility model is described in detail above, and the principle and the implementation mode of the application are explained by applying the embodiment in the text, and the description of the above embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.
Claims (4)
1. A domestic sewage treatment system is characterized by comprising a water inlet treatment device, an aeration grit chamber, an anaerobic tank, an MBBR tank, an ultraviolet sterilization tank and a biogas residue treatment system;
the aeration grit chamber is provided with a feeding hole and a discharging hole, the water outlet of the water inlet treatment device is connected with the feeding hole of the aeration grit chamber, a discharging pipeline of the aeration grit chamber is provided with a branch, the branch I is connected to the water inlet of the anaerobic tank, and the branch II is connected to an external biogas residue treatment system through a biogas residue conveying pipeline;
a biogas collecting tank is connected above the anaerobic tank; the water outlet of the anaerobic tank is connected to the MBBR tank;
and a water outlet of the MBBR tank is connected with the ultraviolet sterilization tank.
2. The domestic sewage treatment system of claim 1, wherein an aeration device is arranged in the MBBR tank.
3. The sewage treatment system of claim 1, wherein the water treatment apparatus comprises: and the grid pool is connected with a domestic sewage outlet pipe.
4. A domestic sewage treatment system according to claim 3 wherein: the water inlet treatment device comprises: and the water inlet of the adjusting tank is connected with the grid tank, and the water outlet of the adjusting tank is connected with the aeration grit chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020072048.4U CN213037613U (en) | 2020-01-14 | 2020-01-14 | Domestic sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020072048.4U CN213037613U (en) | 2020-01-14 | 2020-01-14 | Domestic sewage treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213037613U true CN213037613U (en) | 2021-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020072048.4U Active CN213037613U (en) | 2020-01-14 | 2020-01-14 | Domestic sewage treatment system |
Country Status (1)
| Country | Link |
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| CN (1) | CN213037613U (en) |
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2020
- 2020-01-14 CN CN202020072048.4U patent/CN213037613U/en active Active
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