CN215975459U - Small-size sewage treatment system of buried reinforced concrete structure entirely - Google Patents

Small-size sewage treatment system of buried reinforced concrete structure entirely Download PDF

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CN215975459U
CN215975459U CN202122635430.9U CN202122635430U CN215975459U CN 215975459 U CN215975459 U CN 215975459U CN 202122635430 U CN202122635430 U CN 202122635430U CN 215975459 U CN215975459 U CN 215975459U
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tank
sewage
area
membrane
treatment system
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孙政
李玉胜
白华清
王先涛
金芷琪
陆振飞
魏业香
贺阳
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Southwest Municipal Engineering Design and Research Institute of China
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Southwest Municipal Engineering Design and Research Institute of China
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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Abstract

The utility model provides a small sewage treatment system of a fully-buried reinforced concrete structure, which comprises a box body, a pretreatment area and a biochemical treatment area, wherein the box body is pre-buried underground; the pretreatment area is provided with a physical filtering device for filtering particle impurities and oil stains in the sewage, and the downstream of the pretreatment area is connected with a biochemical treatment area; the biochemical treatment area comprises an anaerobic tank, an anoxic tank, an aerobic tank and a membrane tank, wherein the anaerobic tank, the anoxic tank, the aerobic tank and the membrane tank are used for sewage to flow through in sequence, and a first return pipeline is arranged between the membrane tank and the aerobic tank, so that sludge in the membrane tank flows back to the aerobic tank, and the concentration of the sludge is adjusted; a second return pipeline is arranged between the aerobic tank and the anoxic tank, so that the nitrified liquid in the sewage of the aerobic tank flows back to the anoxic tank for denitrification and denitrification denitrogenation; the downstream of the membrane pool is also communicated with a disinfection pool; the sewage treatment system has high sewage treatment efficiency, the pretreatment area and the biochemical treatment area are both arranged in the box body, the occupied area is small, and the appearance landscape is good.

Description

Small-size sewage treatment system of buried reinforced concrete structure entirely
Technical Field
The utility model relates to the field of sewage treatment, in particular to a small-sized sewage treatment system of a fully-buried reinforced concrete structure.
Background
Patent CN105502824A discloses an intensive integrated small sewage treatment station, and each functional section of the treatment station adopts an integrated design, so that the occupied area is saved; however, in the sewage treatment process of the treatment station, a physical filtration process is lacked, so that the treatment burden of a subsequent biochemical treatment process is easily increased, and in addition, in the biochemical treatment process, sewage passes through functional areas such as an anaerobic tank, an anoxic tank and an aerobic tank in sequence and unidirectionally, so that the sewage (or sludge) treatment efficiency is not thorough.
In view of the above, there is a need for an improved integrated wastewater treatment system of this type.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the background art and provides a small sewage treatment system with a fully-buried reinforced concrete structure.
The embodiment of the utility model is realized by the following technical scheme:
a small sewage treatment system with a fully-buried reinforced concrete structure comprises a box body which is pre-buried underground, and a pretreatment area and a biochemical treatment area which are arranged in the box body; a physical filtering device is arranged in the pretreatment area and is used for filtering and removing particle impurities and oil stains in the sewage, and the downstream of the pretreatment area is connected with the biochemical treatment area;
the biochemical treatment area comprises an anaerobic tank, an anoxic tank, an aerobic tank and a membrane tank, wherein sewage flows through the anaerobic tank, the anoxic tank, the aerobic tank and the membrane tank in sequence, and a first return pipeline is arranged between the membrane tank and the aerobic tank and used for returning sludge in the membrane tank to the aerobic tank; a second return pipeline is arranged between the aerobic tank and the anoxic tank and is used for returning the nitrified liquid in the sewage of the aerobic tank to the anoxic tank for denitrification reaction; the downstream of the membrane tank is communicated with a disinfection tank for disinfecting and discharging sewage in the disinfection tank.
Preferably, at least one group of membrane modules for filtering are detachably arranged in the membrane pool; the sewage treatment system also comprises an auxiliary tank area, and an off-line cleaning tank for cleaning the membrane module is arranged in the auxiliary tank area.
Preferably, the sewage treatment system further comprises an auxiliary space area arranged in the box body, and equipment and a dosing room are arranged in the auxiliary space area;
the off-line cleaning pool and the disinfection pool are respectively connected with a group of medicament pumping devices through pipelines, and the plurality of medicament pumping devices are arranged in the equipment and the dosing room.
Preferably, the attached pond area is also provided with a sludge storage pond, and the downstream of the membrane pond is communicated with the sludge storage pond and used for periodically discharging sludge in the membrane pond into the sludge storage pond;
the side wall of the sludge storage tank is provided with a plurality of supernatant discharge pipes with different heights, and after sludge in the sludge storage tank is clarified, the supernatant in the sludge storage tank is discharged in a layered mode.
Preferably, the physical filtering device comprises an inlet channel, a grit chamber, an oil separation tank and an adjusting tank;
the water inlet channel is communicated with a sewage source, and an artificial grating and a mechanical grating are sequentially arranged in the water inlet channel along the sewage flowing direction and are used for filtering floating objects and large-aperture particles in sewage; the downstream of the water inlet channel is communicated with the grit chamber, and the grit chamber is used for filtering large-specific gravity particulate matters in sewage;
the downstream of the grit chamber is communicated with the oil separation tank, and the oil separation tank is used for filtering floating oil on the surface layer of the sewage; the downstream of the oil separation tank is communicated with the adjusting tank, the adjusting tank is used for adjusting the water quantity and water of sewage, and the adjusting tank is connected with the anaerobic tank through a sewage lifting pump.
Preferably, in the box body, the pretreatment area and the biochemical treatment area are arranged side by side, the water inlet channel is positioned at the first end of the pretreatment area, the adjusting tank is positioned at the second end of the pretreatment area, and the grit chamber and the oil separation tank are positioned between the water inlet channel and the adjusting tank;
the anaerobism pond is located the second end in biochemical treatment district, the disinfection pond is located the first end in biochemical treatment district, and oxygen deficiency pond, good oxygen pond and membrane pond are located anaerobism pond and disinfection pond between for the sewage flow path that flows through pretreatment district and biochemical treatment district is the letter "U" type.
Preferably, the auxiliary space area and the pretreatment area are oppositely arranged at two sides of the biochemical treatment area, the auxiliary space area is also provided with a channel entering the box body, and the channel is provided with a stair connected with the bottom of the auxiliary space area.
Preferably, a blower device and an ion deodorization system are further arranged in the auxiliary space area.
The sewage treatment method of the small-sized sewage treatment system with the fully-buried reinforced concrete structure comprises the following steps:
s1, enabling the sewage to flow through a pretreatment area, and filtering and removing oil stains, floating objects and particulate matters in the sewage through a physical filtering device;
s2, enabling the sewage to sequentially flow through an anaerobic pool, an anoxic pool, an aerobic pool and a membrane pool of the biochemical treatment area, performing nitrogen and phosphorus removal on the sewage, enabling the sludge to flow back through a first return pipeline to maintain the sludge concentration of the biochemical treatment area, and enabling the sewage to flow back to the anaerobic pool through a second return pipeline to perform denitrification and nitrogen removal fully; decomposing organic matters in the sewage by the aerobic tank, and then flowing into the membrane tank;
s3, discharging the clear liquid filtered out by the membrane tank after passing through the disinfection tank for disinfection.
Preferably, the sewage treatment method further comprises the step of off-line cleaning the membrane tank: s4, after the membrane tank runs for a period, hoisting the membrane modules in the membrane tank to an offline cleaning tank in a set for offline alkaline cleaning.
The technical scheme of the embodiment of the utility model at least has the following advantages and beneficial effects:
(1) in the sewage treatment system, the pretreatment area firstly filters floating materials, oil stains and particle impurities in the sewage, and the anaerobic pool, the anoxic pool and the aerobic pool in the biochemical treatment area sequentially remove phosphorus and nitrogen compounds in the sewage and decompose organic matters in the sewage; in addition, the sludge in the membrane tank is returned to the aerobic tank through the first return pipeline, so that the sludge concentration in the biochemical treatment area can be adjusted conveniently, and the organic matters in the sludge can be decomposed fully; the nitrified substances in the sewage of the aerobic tank flow back to the anoxic tank through the second return pipeline to perform denitrification reaction and discharge the nitrides, so that the treatment effect on phosphorus and nitrogen compounds and organic substances in the sewage is good, and the sewage is convenient to discharge after reaching the standard.
(2) The sewage treatment system adopts a reinforced concrete box type structural design, the structural strength is high, and the pretreatment area and the biochemical treatment area are both arranged in the box body, so that the structure miniaturization of the whole set of treatment system is facilitated; meanwhile, when the sewage treatment system is installed in a pre-embedded mode, the durability is good, the occupied area is saved, and the appearance landscape is good.
Drawings
FIG. 1 is a schematic view of the structure of a sewage treatment system of the present invention;
icon: 1-box, 10-channel, 100-stair, 2-pretreatment area, 20-water inlet channel, 200-water inlet pipe, 21-grit chamber, 22-oil separation chamber, 23-regulation chamber, 230-sewage lifting pump, 231-overflow pipe, 3-biochemical treatment area, 30-anaerobic chamber, 31-anoxic chamber, 32-aerobic chamber, 320-microporous aerator, 321-second return pipe, 322-blower device, 33-membrane chamber, 330-membrane module, 331-first return pipe, 332-produced water self-priming pump, 4-auxiliary space area, 40-device and medicine-adding room, 400-ion deodorization system, 410-in-situ cleaning pump, 41-water inlet instrument room, 42-water outlet instrument room, 50-submersible stirrer, 6-an auxiliary tank area, 60-a disinfection tank, 600-a water outlet pipe, 61-an off-line cleaning tank and 62-a sludge storage tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Referring to fig. 1, a small sewage treatment system of a fully-buried reinforced concrete structure comprises a box body 1 pre-buried underground, and a pretreatment area 2, a biochemical treatment area 3, an auxiliary space area 4 and an auxiliary pool area 6 which are arranged in the box body 1; the box body 1 is of a reinforced concrete structure, and compared with a traditional steel structure or a glass fiber reinforced plastic structure, the box body 1 of the reinforced concrete structure has the advantages of being low in cost, high in structural strength and good in durability, is more suitable for being embedded and installed, saves occupied area and is good in appearance landscape.
The box body 1 is provided with a channel 10 in the auxiliary space area 4, and the channel 10 is provided with a downward stair 100 so that a worker can conveniently enter the channel.
The pretreatment area 2, the biochemical treatment area 3, the auxiliary space area 4 and the auxiliary tank area 6 are integrally arranged in the tank body 1, the whole sewage treatment process is completely concentrated in each functional area in the tank body 1, the structure is more compact, the miniaturization of a sewage treatment system is facilitated, the sewage treatment system is mostly used for the treatment capacity of 30-600 tons/day, and for example, a series of sewage treatment systems with different treatment capacity parameters such as 30 tons/day, 50 tons/day, 80 tons/day, 100 tons/day, 150 tons/day, 200 tons/day, 250 tons/day, 300 tons/day, 400 tons/day, 500 tons/day and the like are designed according to the design scheme of the sewage treatment system, so that the sewage treatment system is suitable for sewage treatment work in rural and rural areas and towns.
The first embodiment is as follows:
this example illustrates the structure and operation of the sewage treatment system of the present invention, taking a typical sewage treatment system with a sewage treatment capacity of 250 tons/day as an example.
Referring to fig. 1, the right side of fig. 1 is a pretreatment area 2, a physical filtering device is arranged in the pretreatment area 2 for filtering particle impurities and oil stains in sewage, and the downstream of the pretreatment area 2 is connected with a biochemical treatment area 3.
Specifically, the physical filtering device of the pretreatment zone 2 includes an inlet channel 20, a grit chamber 21, an oil separation chamber 22 and a regulating tank 23, wherein the inlet channel 20 is communicated with a sewage source through an inlet pipe 200.
Follow sewage flow direction and set gradually artifical grid and mechanical grid in the inlet channel 20, artifical grid (hole 10mm) and mechanical grid (hole 3mm) dual filtration strain floater and large aperture particulate matter in the sewage, the low reaches intercommunication of inlet channel 20 grit chamber 21, grit chamber 21 is used for filtering the large proportion particulate matter in the sewage.
The downstream of grit chamber 21 with oil interceptor 22 intercommunication, oil interceptor 22 is used for the oil slick on filtering sewage top layer, and the sewage that the lower floor does not contain the oil slick in oil interceptor 22 flows into equalizing basin 23, equalizing basin 23 is used for the water yield and the water regulation of sewage, and the passing through sewage lift pump 230 of equalizing basin 23 with the anaerobism pond 30 is connected.
The plane area and the volume size of the adjusting tank 23 are far larger than the size areas of the ditch 20, the grit chamber 21 and the oil separation tank 22, and the adjusting tank is not easily influenced by the inflow change of the sewage with the peak flow or the peak concentration, so that the sewage has stable water quantity and uniform water quality before biochemical treatment, a submersible stirrer 50 is arranged in the adjusting tank 23, and an overflow pipe 231 is arranged on the side wall of the adjusting tank 23; the inlet channel 20, the grit chamber 21, the oil separation tank 22 and the adjusting tank 23 are all rectangular grid structures in the overlooking direction, the structure is more compact, and the waste of space is avoided.
The biochemical treatment area 3 is arranged at the side of the pretreatment area 2, the biochemical treatment area 3 comprises an anaerobic pool 30, an anoxic pool 31, an aerobic pool 32 and a membrane pool 33, sewage flows through the anaerobic pool 30, the sewage is pumped into the anaerobic pool 30 by a sewage lifting pump 230 arranged in the regulating pool 23, in the anaerobic pool 30, phosphorus and nitrogen are decomposed by anaerobic microorganisms, an anoxic environment is created in the anoxic pool 31, the growth of anoxic microorganisms is facilitated, denitrification reaction is carried out in the anoxic pool 31, and nitric acid and nitrous acid compounds are converted into nitrogen or nitride to be discharged; suspended matters, ammonia nitrogen, total nitrogen, phosphorus, pH value and other indexes in the sewage reach specified values, and the aerobic tank 32 decomposes and nitrifies microorganisms and then flows into the membrane tank 33.
Wherein, a first return pipeline 331 is arranged between the membrane tank 33 and the aerobic tank 32, so as to return the sludge in the membrane tank 33 to the aerobic tank 32 and maintain the sludge concentration of the biochemical treatment system; a second return pipeline 321 is arranged between the aerobic tank 32 and the anoxic tank 31, so that the nitrified liquid in the sewage in the aerobic tank 32 flows back to the anoxic tank 31 for denitrification reaction; the downstream of the membrane tank 33 is communicated with a disinfection tank 60 for disinfecting the sewage in the disinfection tank 60 and discharging the sewage through a water outlet pipe 600.
At least one group of membrane assemblies 330 for filtering is detachably arranged in the membrane tank 33, in this embodiment, two groups of membrane assemblies 330 are arranged, the sewage treatment system further comprises an auxiliary tank body area 6, and an off-line cleaning tank 61 and a sludge storage tank 62 for cleaning the membrane assemblies 330 are arranged in the auxiliary tank body area 6.
The auxiliary space zone 4 is internally provided with equipment and a dosing room 40, the aerobic tank 32 is internally provided with a microporous aerator 320, the microporous aerator 320 is connected with a blowing device 322, and the blowing device 322 is arranged in the equipment and dosing room 40, so that the maintenance and the management are convenient.
The off-line cleaning tank 61 and the disinfection tank 60 are respectively connected with a group of medicament pumping devices through pipelines, and the plurality of medicament pumping devices are arranged in the equipment and the dosing room 40.
In the cleaning arrangement of the membrane module 330, two modes of online cleaning and offline cleaning are provided:
mode one, online cleaning: set up sodium hypochlorite in the equipment of the subsidiary space district 4 of side and add medicine room 40 and throw the pump, insert sodium hypochlorite into the inlet tube of membrane cisterna 33, when needing on-line cleaning, produce water self priming pump 332 and shut down, sodium hypochlorite gets into the membrane module through the product water pipe of membrane module 330 to wash with alkaline membrane module 330.
And in the second mode, after a certain period of operation, off-line backwashing is required. The membrane module 330 is hoisted by the equipment, and the membrane module 330 is hoisted out in a set and put into the off-line cleaning tank 61. Through the sodium hypochlorite pump that throws that sets up in equipment and medicine workshop 40, send into off-line washing pond 61 with sodium hypochlorite, carry out the off-line and wash with alkaline. The waste liquid after cleaning is pumped by a movable submersible sewage pump through a pump pit in an off-line cleaning pool 61.
Referring to fig. 1, the auxiliary space region 4 is disposed on the left side of the biochemical treatment region 3, the auxiliary tank region 6 is disposed on the lower side of the biochemical treatment region 3, the device and dosing room 40, the water inlet meter room 41 and the water outlet meter room 42 are disposed in the auxiliary space region 4, and the water inlet meter and the water outlet meter are disposed in different spaces, so that management and maintenance are facilitated.
An ion deodorization system 400 and a ventilation system are further arranged in the equipment and medicine adding workshop 40, and a normal position cleaning pump 410 is further arranged for cleaning the whole pipeline.
An attached disinfection tank 60, an off-line cleaning tank 61 and a sludge storage tank 62 are arranged in the auxiliary tank body area 6, wherein the downstream of the membrane tank 33 is communicated with the sludge storage tank 62 for periodically discharging sludge in the membrane tank 33 into the sludge storage tank 62; the side wall of the sludge storage tank 62 is provided with a plurality of supernatant discharge pipes with different heights, after sludge in the sludge storage tank 62 is clarified, the supernatant in the sludge storage tank 62 is discharged in a layered mode, and sludge deposited on the lower layer is removed regularly.
Referring to fig. 1, in the overall structural layout of the sewage treatment system, the pretreatment region 2, the biochemical treatment region 3 and the auxiliary space region 4 are arranged side by side, the water inlet channel 20 is located at the first end of the pretreatment region 2, the adjusting tank 23 is located at the second end of the pretreatment region 2, and the grit chamber 21 and the oil separation chamber 22 are located between the water inlet channel 20 and the adjusting tank 23; the anaerobic tank 30 is located at the second end of the biochemical treatment zone 3, the sterilizing tank 60 is located at the first end of the biochemical treatment zone 3, and the anoxic tank 31, the aerobic tank 32 and the membrane tank 33 are located between the anaerobic tank 30 and the sterilizing tank 60, so that a sewage flow path passing through the pretreatment zone 2 and the biochemical treatment zone 3 is letter "U" shaped. The structural layout is compact and reasonable.
Example two:
the embodiment also provides a sewage treatment method of the small-sized sewage treatment system with the fully-buried reinforced concrete structure in the first embodiment, which comprises the following steps:
s1, enabling sewage to flow through the pretreatment area 2, filtering the sewage entering through the water inlet channel 20 through the artificial grid and the mechanical grid to remove floating objects and large-aperture particles in the sewage, removing the large-specific gravity particles and surface oil stains through the grit chamber 21 and the oil separation chamber 22, reducing the treatment burden of subsequent biochemical treatment through a physical filtration mode, and saving the cost of biochemical treatment.
S2, making the sewage flow through the anaerobic tank 30, the anoxic tank 31, the aerobic tank 32 and the membrane tank 33 of the biochemical treatment area 3 in sequence, performing nitrogen and phosphorus removal on the sewage, making the sludge flow back through the first return pipeline 331 to maintain the sludge concentration of the biochemical treatment area 3, and making the sewage flow back to the anaerobic tank 30 through the second return pipeline 321 to perform denitrification and nitrogen removal fully; after organic matters in the sewage are decomposed by the aerobic tank 32, the sewage flows into the membrane tank 33, and impurities such as fine particles are filtered by the membrane tank 33 and then discharged into the disinfection tank 60.
S3, the clear liquid filtered out by the membrane tank 33 flows through the disinfection tank 60 for disinfection and sterilization, if chlorine is introduced, the disinfection time is not less than 30 minutes, and the tail water is disinfected and discharged after reaching the standard.
Further, the sewage treatment method of the sewage treatment suction further includes an off-line cleaning step of the membrane tank 33:
s4, after the membrane tank 33 runs for a period, hoisting the membrane module 330 in the membrane tank 33 to the offline cleaning tank 61 in a set for offline alkaline cleaning, or adopting the online cleaning mode of the mode one in the first embodiment.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A small sewage treatment system of a fully-buried reinforced concrete structure is characterized by comprising a box body (1) which is pre-buried underground, and a pretreatment area (2) and a biochemical treatment area (3) which are arranged in the box body (1); a physical filtering device is arranged in the pretreatment region (2) and is used for filtering and removing particle impurities and oil stains in sewage, and the downstream of the pretreatment region (2) is connected with the biochemical treatment region (3);
the biochemical treatment area (3) comprises an anaerobic tank (30), an anoxic tank (31), an aerobic tank (32) and a membrane tank (33) which are used for sewage to flow through in sequence, wherein a first return pipeline (331) is arranged between the membrane tank (33) and the aerobic tank (32) and used for enabling sludge in the membrane tank (33) to return to the aerobic tank (32); a second return pipeline (321) is arranged between the aerobic tank (32) and the anoxic tank (31) and is used for returning the nitrified liquid in the sewage of the aerobic tank (32) to the anoxic tank (31) for denitrification reaction; the downstream of the membrane tank (33) is communicated with a disinfection tank (60) for disinfecting and discharging the sewage in the disinfection tank (60).
2. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 1, characterized in that: at least one group of membrane assemblies (330) for filtering are arranged in the membrane pool (33) in a detachable manner; the sewage treatment system also comprises an auxiliary tank area (6), wherein an off-line cleaning tank (61) for cleaning the membrane module (330) is arranged in the auxiliary tank area (6).
3. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 2, characterized in that: the sewage treatment system also comprises an auxiliary space area (4) arranged in the box body (1), and equipment and a dosing room (40) are arranged in the auxiliary space area (4);
the off-line cleaning pool (61) and the disinfection pool (60) are respectively connected with a group of medicament pumping devices through pipelines, and the plurality of medicament pumping devices are arranged in the equipment and the dosing room (40).
4. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 3, characterized in that: the attached tank body area (6) is also provided with a sludge storage tank (62), and the downstream of the membrane tank (33) is communicated with the sludge storage tank (62) and used for periodically discharging sludge in the membrane tank (33) into the sludge storage tank (62);
the side wall of the sludge storage tank (62) is provided with a plurality of supernatant discharge pipes with different heights, and after sludge in the sludge storage tank (62) is clarified, the supernatant in the sludge storage tank (62) is discharged in a layered mode.
5. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 3, characterized in that: the physical filtering device comprises a water inlet channel (20), a grit chamber (21), an oil separation tank (22) and an adjusting tank (23);
the water inlet channel (20) is communicated with a sewage source, and an artificial grating and a mechanical grating are sequentially arranged in the water inlet channel (20) along the sewage flowing direction and are used for filtering floating objects and large-aperture particles in sewage; the downstream of the water inlet channel (20) is communicated with the grit chamber (21), and the grit chamber (21) is used for filtering large-specific gravity particulate matters in sewage;
the downstream of the grit chamber (21) is communicated with the oil separation tank (22), and the oil separation tank (22) is used for filtering floating oil on the surface layer of sewage; the downstream of the oil separation tank (22) is communicated with the adjusting tank (23), the adjusting tank (23) is used for adjusting the water quantity and water of sewage, and the adjusting tank (23) is connected with the anaerobic tank (30) through a sewage lifting pump (230).
6. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 5, wherein: in the box body (1), the pretreatment region (2) and the biochemical treatment region (3) are arranged side by side, the water inlet channel (20) is positioned at the first end of the pretreatment region (2), the adjusting tank (23) is positioned at the second end of the pretreatment region (2), and the sand setting tank (21) and the oil separation tank (22) are positioned between the water inlet channel (20) and the adjusting tank (23);
the anaerobism pond (30) are located the second end of biochemical treatment district (3), disinfection pond (60) are located the first end of biochemical treatment district (3), and oxygen deficiency pond (31), good oxygen pond (32) and membrane pond (33) are located between anaerobism pond (30) and disinfection pond (60) for the sewage flow path who flows through preliminary treatment district (2) and biochemical treatment district (3) is the letter "U" type.
7. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 6, wherein: the auxiliary space area (4) and the pretreatment area (2) are oppositely arranged on two sides of the biochemical treatment area (3), a channel (10) entering the box body (1) is further formed in the auxiliary space area (4), and a stair (100) connected with the bottom of the auxiliary space area (4) is arranged on the channel (10).
8. The small-sized sewage treatment system of the fully buried reinforced concrete structure according to claim 6, wherein: and a blower device (322) and an ion deodorization system (400) are also arranged in the auxiliary space area (4).
CN202122635430.9U 2021-10-28 2021-10-28 Small-size sewage treatment system of buried reinforced concrete structure entirely Active CN215975459U (en)

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CN202122635430.9U CN215975459U (en) 2021-10-28 2021-10-28 Small-size sewage treatment system of buried reinforced concrete structure entirely

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116621400A (en) * 2023-07-25 2023-08-22 中国市政工程西南设计研究总院有限公司 High-quality water purification treatment system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116621400A (en) * 2023-07-25 2023-08-22 中国市政工程西南设计研究总院有限公司 High-quality water purification treatment system
CN116621400B (en) * 2023-07-25 2023-10-10 中国市政工程西南设计研究总院有限公司 High-quality water purification treatment system

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