CN215712458U

CN215712458U - MBBR septic tank sewage treatment system

Info

Publication number: CN215712458U
Application number: CN202121770016.2U
Authority: CN
Inventors: 黄勇; 欧群飞
Original assignee: Chengdu Filtrascale Technology Co ltd
Current assignee: Chengdu Filtrascale Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-02-01
Anticipated expiration: 2031-07-29

Abstract

The utility model relates to the technical field of sewage treatment, in particular to an MBBR septic tank sewage treatment system, aiming at improving the denitrification effect of septic tank sewage, reducing the addition of medicaments, increasing the filtering effect and improving the quality of effluent; include along sewage water inflow direction set gradually and through the pipeline intercommunication each other: a grating tank, an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an electric flocculation tank, a sedimentation tank and a filtering tank; a water inlet pipe is arranged at the front end of the grating pool; an equipment room is arranged beside the filtering tank; a water outlet pipe and a disinfection mechanism for disinfecting and sterilizing the outlet water of the water outlet pipe are arranged in the equipment room; a sludge return pipeline is arranged between the sedimentation tank and the anaerobic tank; an aeration device is arranged in the aerobic tank; a nitrifying liquid return pipeline is arranged between the aerobic tank and the anoxic tank; the anaerobic tank, the anoxic tank and the aerobic tank are internally provided with a plurality of MBBR suspended fillers in a suspended manner; and a fiber filter cloth rotary disc filter is arranged in the filter tank.

Description

MBBR septic tank sewage treatment system

Technical Field

The utility model relates to the technical field of septic tank sewage treatment, in particular to an MBBR septic tank sewage treatment system.

Background

Still contain more domestic sewage except excrement and urine in the septic tank sewage, domestic sewage mainly includes: in a conventional sewage treatment system, few components based on septic tank sewage are subjected to system analysis, so that targeted arrangement is not performed, the sewage treatment effect is poor, and secondary pollution is easily caused by discharge; three main points of attention are paid to septic tank sewage: firstly, the addition of a flocculating agent is reduced or avoided as much as possible in a flocculation stage, so that secondary pollution is prevented, and secondly, the sludge age of activated sludge is improved, and the denitrification effect is increased; thirdly, the components of the domestic sewage are complex, and the filtering effect is improved.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model provides an MBBR septic tank sewage treatment system, aiming at performing systematic treatment on septic tank sewage, improving the denitrification effect, reducing the addition of medicaments, increasing the filtering effect and improving the effluent quality.

According to the embodiment of the utility model, the sewage treatment system of the MBBR septic tank comprises the following components which are sequentially arranged along the sewage inlet direction and are mutually communicated through pipelines: a grating tank, an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an electric flocculation tank, a sedimentation tank and a filtering tank; a water inlet pipe is arranged at the front end of the grating pool; an equipment room is arranged beside the filtering tank; a water outlet pipe and a disinfection mechanism for disinfecting and sterilizing the outlet water of the water outlet pipe are arranged in the equipment room; a sludge return pipeline is arranged between the sedimentation tank and the anaerobic tank; an aeration device is arranged in the aerobic tank; a nitrifying liquid return pipeline is arranged between the aerobic tank and the anoxic tank; the anaerobic tank, the anoxic tank and the aerobic tank are internally provided with a plurality of MBBR suspended fillers in a suspended manner; and a fiber filter cloth rotary disc filter is arranged in the filter tank.

Preferably, be provided with two sets of water level lifting equipment in the equalizing basin, water level lifting equipment meets with the pipeline for in sewage lifting to the anaerobism pond in the equalizing basin.

Preferably, a liquid level meter is arranged in the regulating reservoir.

Preferably, the sedimentation tank is an inclined tube sedimentation tank.

Preferably, the device also comprises a sludge tank which is arranged independently; the sludge tank is used for containing flocs fished out of the electric flocculation tank.

Preferably, the aperture of the filter cloth of the fiber filter cloth rotary disc filter is 10-1000 μm.

Preferably, the disinfection mechanism is an ultraviolet disinfection device.

Preferably, monitoring elements are arranged in the grid tank, the adjusting tank, the anaerobic tank, the anoxic tank, the aerobic tank, the electric flocculation tank, the sedimentation tank and the filtering tank; the monitoring element includes: one or more of a COD monitoring probe, a flowmeter, a turbidity monitor, an oxygen dissolving instrument, an ammonia nitrogen probe, a pH monitor and an electromagnetic flowmeter.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model prevents a plurality of MBBR suspended fillers in the anaerobic tank, the anoxic tank and the aerobic tank in a suspending way, overcomes the defects that a fixed bed reactor needs regular back flushing, a fluidized bed reactor needs to fluidize a carrier, a submerged biological filter tank needs to clean a filter material and replace an aerator, and has complex operation; an electric flocculation method is used in a flocculation section, and can remove a large amount of pollutants by precipitation through single operation without adding chemicals for flocculation, so that secondary pollution is reduced, and the electric flocculation method has obvious environmental and economic advantages for industrial, civil and municipal projects; the fiber filter cloth rotary disc filter is used as filtering equipment in the filtering tank, and the effluent quality of the fiber filter cloth rotary disc filter is good and stable. The fiber filter cloth rotary disc filter adopts the filter disc to wrap filter cloth to replace the sand filter material of the traditional filter tank, the aperture of the filter cloth is very small, and micro particles with the particle size of micron (mum) grade can be intercepted, so the effluent quality and the effluent stability are superior to those of the granule filter tank.

Drawings

FIG. 1 is a plan view of an embodiment of the present invention;

FIG. 2 is a process flow diagram of an embodiment of the present invention.

In the above drawings: 1. a grid tank; 2. a regulating tank; 21. a water level raising device; 22. a liquid level meter; 3. an anaerobic tank; 4. an anoxic tank; 5. an aerobic tank; 51. an aeration device; 6. an electric flocculation tank; 7. a sedimentation tank; 8. a filtration tank; 81. a fiber filter cloth rotary disc filter; 9. a device room; 91. an ultraviolet ray sterilizing device; 10. a sludge tank; 011. a water inlet pipe; 012. a water outlet pipe; 013. a monitoring element; 014. a sludge return line; 015. a nitrifying liquid reflux pipeline; 016. MBBR suspended filler.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the embodiments.

As shown in fig. 1-2: the utility model provides a MBBR septic tank sewage treatment system, includes that it sets gradually and communicates each other through the pipeline along sewage direction of intaking: the device comprises a grid tank 1, an adjusting tank 2, an anaerobic tank 3, an anoxic tank 4, an aerobic tank 5, an electric flocculation tank 6, a sedimentation tank 7 and a filtering tank 8; the front end of the grid tank 1 is provided with a water inlet pipe 011, and the front end of the water inlet pipe 011 is connected with the septic tank; an equipment room 9 is arranged beside the filtering tank 8; a water outlet pipe 012 is arranged in the equipment room 9, the water outlet pipe 012 is used for discharging the treated sewage, and a disinfection mechanism for disinfecting and sterilizing the water outlet of the water outlet pipe 012 is also arranged in the equipment room 9; a sludge return pipeline 014 is arranged between the sedimentation tank 7 and the anaerobic tank 3 and is used for returning sludge in the sedimentation tank 7 to the anaerobic tank 3; an aeration device 51 is arranged in the aerobic tank 5; a nitrifying liquid backflow pipeline 015 is arranged between the aerobic tank 5 and the anoxic tank 4, and backflow liquid in the aerobic tank 5 flows back into the anoxic tank 4; the anaerobic tank 3, the anoxic tank 4 and the aerobic tank 5 are internally provided with the MBBR suspended filler 016 and the MBBR suspended filler 016 in a plurality of suspended manner, so that the defects that a fixed bed reactor needs regular back flushing, a fluidized bed reactor needs to fluidize a carrier, a submerged biological filter is blocked and the filter material needs to be cleaned and an aerator needs to be replaced in a complex operation are overcome, and compared with an activated sludge method, the sludge age is longer, more nitrobacteria can be kept, and a better denitrification effect is achieved; and a fiber filter cloth rotary disc filter 81 is arranged in the filter tank 8, and the effluent quality of the fiber filter cloth rotary disc filter 81 is good and stable. The fiber filter cloth rotary disc filter 81 adopts a filter disc to wrap filter cloth outside to replace a sand filter material of a traditional filter tank, the aperture of the filter cloth is very small, and tiny particles with the particle size of several micrometers (mum) can be intercepted, so the effluent quality and the effluent stability are superior to those of a granular filter tank.

As shown in fig. 2: two sets of water level lifting equipment 21 are arranged in the adjusting tank 2, the water level lifting equipment 21 is connected with a pipeline and used for lifting sewage in the adjusting tank 2 into the anaerobic tank 3, in the embodiment, the absolute elevations of the grid tank 1 and the adjusting tank 2 are smaller than those of other working sections, so that the water level lifting equipment 21 is arranged, the water level lifting equipment 21 is specifically a sewage lifting pump, and the two sets are arranged for one standby.

As shown in fig. 2: be provided with level gauge 22 in the equalizing basin 2, level gauge 22 is used for the water level condition of record equalizing basin 2, and in this embodiment, level gauge 22 specifically is floater formula level gauge 22.

As shown in fig. 2: the sedimentation tank 7 is an inclined tube sedimentation tank 7, and the inclined tube sedimentation tank 7 has the advantages that the laminar flow principle is utilized, so that the processing capacity of the sedimentation tank 7 is improved; the settling distance of the particles is shortened, so that the settling time is shortened; the sedimentation area of the sedimentation tank 7 is increased, thereby improving the treatment efficiency.

As shown in fig. 1-2: in the embodiment, a sludge tank 10 is also independently arranged; the sludge tank 10 is used for containing flocs fished out from the electric flocculation tank 6, and the flocs are fixed and treated in a centralized way to avoid pollution.

As shown in fig. 2: the aperture of the filter cloth of the fiber filter cloth rotary disc filter 81 is 10-1000 μm.

As shown in fig. 2: the disinfection mechanism is an ultraviolet disinfection device 91 for killing bacteria and harmful microorganisms in the water discharged from the water outlet pipe 012.

As shown in fig. 2: monitoring elements 013 are arranged in the grid tank 1, the adjusting tank 2, the anaerobic tank 3, the anoxic tank 4, the aerobic tank 5, the electric flocculation tank 6, the sedimentation tank 7 and the filtering tank 8; the monitoring element 013 includes: COD monitor probe, flowmeter, turbidity monitor, dissolved oxygen appearance, ammonia nitrogen probe and pH monitor, the combination between one or more in the electromagnetic flow meter, for example in this embodiment, just be provided with the electromagnetic flow meter in anaerobism pond 3 and oxygen deficiency pond 4, can set up according to monitoring element 013's function and characteristic certainly, monitoring element 013 helps the staff to master the particular case of treatment facility, the adjustment of being convenient for.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a MBBR septic tank sewage treatment system which characterized in that includes and sets gradually and communicate each other through the pipeline along sewage direction of intaking: a grating tank, an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank, an electric flocculation tank, a sedimentation tank and a filtering tank; a water inlet pipe is arranged at the front end of the grating pool; an equipment room is arranged beside the filtering tank; a water outlet pipe and a disinfection mechanism for disinfecting and sterilizing the outlet water of the water outlet pipe are arranged in the equipment room; a sludge return pipeline is arranged between the sedimentation tank and the anaerobic tank; an aeration device is arranged in the aerobic tank; a nitrifying liquid return pipeline is arranged between the aerobic tank and the anoxic tank; the anaerobic tank, the anoxic tank and the aerobic tank are internally provided with a plurality of MBBR suspended fillers in a suspended manner; and a fiber filter cloth rotary disc filter is arranged in the filter tank.

2. The MBBR septic tank sewage treatment system of claim 1, wherein two sets of water level elevating devices are provided in the conditioning tank, and the water level elevating devices are connected to the pipeline for elevating the sewage in the conditioning tank into the anaerobic tank.

3. The sewage treatment system of the MBBR septic tank of claim 1 or 2, wherein a liquid level meter is arranged in the adjusting tank.

4. The MBBR septic tank sewage treatment system of claim 1, wherein said settling tank is a sloped tube settling tank.

5. The MBBR septic tank sewage treatment system of claim 1, further comprising an independently disposed sludge tank; the sludge tank is used for containing flocs fished out of the electric flocculation tank.

6. The MBBR septic tank sewage treatment system of claim 1, wherein said fibrous filter cloth disc filters have a filter cloth pore size of 10-1000 μm.

7. The MBBR septic tank sewage treatment system of claim 1, wherein said disinfecting means is an ultraviolet disinfecting device.

8. The MBBR septic tank sewage treatment system of claim 1, wherein monitoring elements are arranged in the grid tank, the adjusting tank, the anaerobic tank, the anoxic tank, the aerobic tank, the electrocoagulation tank, the sedimentation tank and the filtering tank; the monitoring element includes: one or more of a COD monitoring probe, a flowmeter, a turbidity monitor, an oxygen dissolving instrument, an ammonia nitrogen probe, a pH monitor and an electromagnetic flowmeter.