CN213680265U

CN213680265U - Biological mineral composite sewage treatment device

Info

Publication number: CN213680265U
Application number: CN202022004536.4U
Authority: CN
Inventors: 蒋平荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-07-13
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a biological mineral composite sewage treatment device, which comprises a sewage concentration tank and a sewage treatment tank which are connected in sequence, wherein the sewage treatment tank is provided with an aeration zone, a multi-surface flow guide zone, a sedimentation zone, a mineral substance filtering zone and a sterilization zone in sequence along the water flow direction; wherein: an aeration pipe is arranged at the bottom of the aeration zone; the multi-surface flow guide area is provided with water baffles which are arranged in a staggered mode, the water baffles and the side walls of the multi-surface flow guide area form a zigzag wave-shaped water flow channel, and the water baffles are arranged in parallel; the mineral substance filtering area is internally provided with volcanic rocks; and an infrared emission device is arranged on the side wall of the sterilization area. The utility model discloses a treater sewage treatment efficiency is high, the expense is low.

Description

Biological mineral composite sewage treatment device

Technical Field

The utility model relates to a sewage treatment device, in particular to a biological mineral composite sewage treatment device.

Background

In China, water environment pollution and water eutrophication are very serious, and with the coming of relevant policies such as 'ten pieces of water' in China, sewage discharge standards are continuously improved in more and more areas so as to relieve the pressure of urban sewage on the environment. Many areas have continuously improved sewage discharge standards, and some areas have improved the discharge standards of sewage treatment plants to the A standard of the GB18918-2002 primary standard, particularly for controlling nitrogen, phosphorus and organic matters, wherein TN is less than or equal to 15mg/L, ammonia nitrogen is less than or equal to 5mg/L, and total phosphorus is less than or equal to 0.5mg/L, COD is less than or equal to 50mg/L, BOD5 is less than or equal to 10 mg/L. However, the conventional sewage treatment method generally uses chemicals to remove COD, BOD, nitrogen and phosphorus in the sewage, and the excessive nitrogen and phosphorus still occur after multi-layer filtration. The treatment method has the advantages of large early-stage investment, large occupied area, easy secondary pollution caused by chemicals, regular replacement of filter screen cloth, addition of chemicals and high cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a biological mineral composite sewage treatment ware, this treater need not to add chemicals, low cost, and the treatment effect is good.

The technical scheme provided by the utility model is a biological mineral composite sewage treatment device, which comprises a sewage concentration tank and a sewage treatment tank which are connected in sequence, wherein the sewage treatment tank is provided with an aeration zone, a multi-surface flow guide zone, a sedimentation zone, a mineral substance filtering zone and a sterilization zone in sequence along the water flow direction; wherein:

an aeration pipe is arranged at the bottom of the aeration zone;

the multi-surface flow guide area is provided with water baffles which are arranged in a staggered mode, the water baffles and the side walls of the multi-surface flow guide area form a zigzag wave-shaped water flow channel, and the water baffles are arranged in parallel;

the mineral substance filtering area is internally provided with volcanic rocks;

and an infrared emission device is arranged on the side wall of the sterilization area.

The sewage concentrated tank discharges the collected sewage to an aeration zone of the sewage treatment tank, the sewage firstly enters the aeration zone, an aeration pipe is arranged at the bottom of the aeration zone, and the aeration pipe leads air to the bottom of the tank, namely, the aeration zone is equivalent to an aerobic zone, nitrobacteria in the sewage consume organic matters under the action of oxygen and convert ammonia nitrogen into N03-N. The sewage flows to a multi-surface diversion area continuously, the oxygen content in the sewage is low, the multi-surface diversion area is equivalent to an anoxic area, the denitrifying bacteria are heterotrophic anaerobic bacteria, and N03-N is converted into an N2 discharge system while organic matters are consumed.

The volcanic rocks are arranged in the mineral substance filtering area, so that microorganisms and heavy metals in sewage can be effectively adsorbed and filtered. The infrared device of the sterilization area performs final sterilization treatment on the sewage and then discharges the sewage to the outside through a water outlet of the sterilization area.

A grid vertical to the water flow direction is arranged in the sewage concentration tank and is positioned between the water inlet and the water outlet of the tank body. The function of the grating is to intercept large suspended matters in the sewage.

And a drain pipe leading to a water inlet of the multi-surface diversion area is arranged at an outlet of the sewage concentration tank. As the organic matters in the sewage in the aeration zone are consumed by the aerobic bacteria in a large quantity, the organic matters in the sewage flowing to the multi-surface flow guide zone are insufficient, and the carbon source which is needed for the propagation of the denitrifying bacteria can not be sufficiently provided, thereby influencing the denitrification effect, leading the effluent of the sewage concentration tank to the water inlet of the multi-surface flow guide zone directly, supplementing the carbon source in the multi-surface flow guide zone and improving the denitrification effect.

The water outlet of the multi-surface diversion area is provided with a water return pipe leading to the water inlet of the aeration area. The sewage in the multi-surface flow guide area flows back to the water inlet of the aeration area, because the sewage in the sewage concentration tank directly flows into the water inlet of the multi-surface flow guide area, ammonia nitrogen in the sewage cannot be absorbed and utilized by denitrifying bacteria, and the sewage needs to flow back to the aeration area to be converted into N03-N by aerobic nitrifying bacteria, and then flows into the multi-surface flow guide area to be converted into N2, so that effective denitrification is realized.

And a sludge return pipe leading to a water inlet of the aeration zone is arranged at the bottom of the sedimentation zone. The water inlet of the aeration zone is the water inlet of the sewage treatment tank, and the purpose of refluxing the sludge in the settling zone is to supplement mature activated sludge for the system and improve the treatment effect of the aeration zone.

And a sludge discharge pipe leading to the outside is also arranged at the bottom of the settling zone. Aged sludge at the bottom of the settling zone needs to be discharged out of the system in time, otherwise, sludge expansion is caused, and the treatment effect of the system is reduced.

Compared with the prior art, the utility model discloses a treater sewage treatment cost is low, effectual.

Drawings

Fig. 1 is a top view of the present invention;

the reference numbers in the figures are: 1. a sewage concentration tank; 2. a sewage treatment tank; 3. an aeration zone; 4. a multi-surface flow guide area; 5. a settling zone; 6. a mineral filtration zone; 7. a sterilization area; 8. an aeration pipe; 9. a water baffle; 10. a grid; 11. a drain pipe; 12. a water return pipe; 13. a mud returning pipe; 14. a sludge discharge pipe.

Detailed Description

The following examples are further illustrative of the present invention with reference to the accompanying drawings, but are not intended to limit the present invention.

As shown in fig. 1, a biomineral composite sewage treatment device comprises a sewage concentration tank 1 and a sewage treatment tank 2 which are connected in sequence, wherein the sewage treatment tank 2 is provided with an aeration zone 3, a multi-surface flow guide zone 4, a sedimentation zone 5, a mineral substance filtering zone 6 and a sterilization zone 7 in sequence along a water flow direction; wherein:

an aeration pipe 8 is arranged at the bottom of the aeration zone 3;

the multi-surface diversion area 4 is provided with water baffles 9 which are arranged in a staggered manner, the water baffles 9 and the side walls of the multi-surface diversion area form zigzag wave-shaped water flow channels, and the water baffles 9 are arranged in parallel;

the mineral substance filtering area 6 is internally provided with volcanic rocks;

and an infrared emission device is arranged on the side wall of the sterilizing area 7.

The sewage centralized pool 1 discharges the collected sewage to an aeration zone 3 of a sewage treatment pool 2, the sewage firstly enters the aeration zone 3, an aeration pipe 8 is arranged at the bottom of the aeration zone 3, and air is introduced to the pool bottom through an aeration pipe 9, namely, the aeration zone 3 is equivalent to an aerobic zone, nitrobacteria in the sewage consume organic matters under the action of oxygen, and ammonia nitrogen is converted into N03-N. The sewage flows to the multi-surface diversion area 4 continuously, the oxygen content in the sewage is low, the multi-surface diversion area 4 is equivalent to an anoxic area, the denitrifying bacteria are heterotrophic anaerobic bacteria, and N03-N is converted into an N2 discharge system while organic matters are consumed.

The mineral substance filtering area 6 is internally provided with volcanic rocks, so that microorganisms and heavy metals in sewage can be effectively adsorbed and filtered. The infrared device of the sterilization area 7 carries out the final sterilization treatment on the sewage and then discharges the sewage to the outside through the water outlet of the sterilization area 7.

A grating 10 vertical to the water flow direction is arranged in the sewage concentration tank 1, and the grating 10 is positioned between a water inlet and a water outlet of the tank body. The purpose of the grating 10 is to intercept large suspended matter in the sewage.

And a water outlet of the sewage concentration tank 1 is provided with a water discharge pipe 11 leading to a water inlet of the multi-surface flow guide area 4. As the organic matters in the sewage in the aeration zone 3 are consumed by the aerobic bacteria in a large amount, the organic matters in the sewage flow to the multi-area flow guide zone 4 are insufficient, and sufficient carbon sources which are needed for the propagation of denitrifying bacteria cannot be provided, thereby affecting the denitrification effect, the effluent of the sewage concentration tank 1 is directly led to the water inlet of the multi-area flow guide zone 4, the carbon sources in the multi-area flow guide zone 4 are supplemented, and the denitrification effect is improved.

The water outlet of the multi-surface flow guide area 4 is provided with a water return pipe 12 leading to the water inlet of the aeration area 3. The sewage at the water outlet of the multi-surface diversion area 4 flows back to the water inlet of the aeration area 3, because the sewage in the sewage concentration tank 1 directly flows into the multi-surface diversion area 4, ammonia nitrogen in the sewage cannot be absorbed and utilized by denitrifying bacteria in the multi-surface diversion area 4, and the sewage needs to flow back to the aeration area 3 again to be converted into N03-N by aerobic nitrifying bacteria firstly and then to flow into the multi-surface diversion area 4 to be converted into N2, so that effective denitrification is realized.

The bottom of the settling zone 5 is provided with a mud return pipe 13 leading to the water inlet of the aeration zone 4. The water inlet of the aeration zone 4 is the water inlet of the sewage treatment tank 2, and the purpose of refluxing the sludge in the sedimentation zone 4 is to supplement mature activated sludge for the system, so that the treatment effect of the aeration zone 4 is improved.

The bottom of the settling zone 5 is also provided with a sludge discharge pipe 14 leading to the outside. Aged sludge at the bottom of the settling zone 5 needs to be discharged out of the system in time, otherwise, sludge expansion is caused, and the treatment effect of the system is reduced.

The sewage treatment device of the utility model is used for treating the urban domestic sewage, and the detected water can reach the first class A standard in the discharge Standard of pollutants for urban Sewage treatment plants (GB 18918-2002). The specific indexes are detailed in the following table:

Claims

1. biological mineral composite sewage treatment ware which characterized in that: the device comprises a sewage concentration tank and a sewage treatment tank which are connected in sequence, wherein the sewage treatment tank is sequentially provided with an aeration zone, a multi-surface flow guide zone, a sedimentation zone, a mineral substance filtering zone and a sterilization zone along the water flow direction; wherein:

an aeration pipe is arranged at the bottom of the aeration zone;

2. The biomineral composite sewage processor of claim 1, characterized in that: a grid vertical to the water flow direction is arranged in the sewage concentration tank and is positioned between the water inlet and the water outlet of the tank body.

3. The biomineral composite sewage processor of claim 1, characterized in that: and a water outlet of the sewage concentration tank is provided with a drain pipe communicated with a water inlet of the multi-surface flow guide area.

4. The biomineral composite sewage processor as claimed in claim 3, wherein: the water outlet of the multi-surface diversion area is provided with a water return pipe leading to the water inlet of the aeration area.

5. The biomineral composite sewage processor of claim 1, characterized in that: and a sludge return pipe leading to a water inlet of the aeration zone is arranged at the bottom of the sedimentation zone.

6. The biomineral composite sewage processor of claim 1, characterized in that: and a sludge discharge pipe leading to the outside is also arranged at the bottom of the settling zone.