CN216513334U

CN216513334U - Sewage treatment system

Info

Publication number: CN216513334U
Application number: CN202122758286.8U
Authority: CN
Inventors: 张宇; 向家兵
Original assignee: Sichuan Xing Jie Xiang Herb Material Co ltd
Current assignee: Sichuan Xing Jie Xiang Herb Material Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-05-13
Anticipated expiration: 2031-11-11

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system which is provided with a sewage treatment device consisting of a flocculation sedimentation device, an air floatation device, a sludge treatment device and a hydrolysis A/O device, can effectively remove organic matters and suspended slag in sewage, and can reduce COD (chemical oxygen demand) in the sewage. The problem of current sewage treatment system filter through coagulating, precipitation method or membrane treatment mostly, and in the plant active ingredient extraction, its sewage characteristics are that the organic matter is too much, and the suspension sediment is also more, and COD discharges that the day value is great, and increase value is also on the high side the next day, but the BOD value is not high to wherein contain certain pigment, the current sewage treatment of this kind of condition is difficult to be suitable for is solved.

Description

Sewage treatment system

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage treatment system.

Background

With the development of economy, the problem of water eutrophication is increasingly prominent in work and production, and for eutrophicated domestic or industrial sewage, a sewage treatment system is required to be used for purification so that the sewage can be reused or meet the discharge requirement, and meanwhile, the sewage treatment system is widely applied to the fields of buildings, agriculture, traffic, energy, petrifaction, medical treatment and the like.

Most of the existing sewage treatment systems carry out filtration through coagulation, precipitation or membrane treatment, and in the extraction of plant effective components, the sewage is characterized by excessive organic matters, more suspended residues, larger COD discharge daily value, higher added value next day, but not high BOD value and certain pigment contained therein, so that the existing sewage treatment system is difficult to apply.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problems and provides a sewage treatment system.

The technical scheme is that the sewage treatment system comprises a flocculation sedimentation device, an air floatation device, a sludge treatment device and a hydrolysis A/O device, wherein the feeding end of the flocculation sedimentation device is communicated with a sewage feeding pipe, the discharging end of the flocculation sedimentation device is communicated with the feeding end of the air floatation device through a conveying pipeline, the discharging end of the air floatation device is communicated with the feeding end of the hydrolysis A/O device through a conveying pipeline, and the sludge treatment device is respectively communicated with the flocculation sedimentation device, the air floatation device and the hydrolysis A/O device through a sludge pipeline.

Optionally, the flocculation sedimentation device comprises a sewage collection pool, a sedimentation pool and a first dosing mechanism, a first sludge discharge pump and a first lift pump are arranged in the sewage collection pool, the first sludge discharge pump is arranged at the bottom of the sewage collection pool, the first sludge discharge pump can pump sludge at the bottom of the sewage collection pool into the sludge treatment device, the first lift pump is arranged at the middle part of the sewage collection pool, the first lift pump pumps liquid in the sewage collection pool into the sedimentation pool, and the first dosing mechanism doses the sedimentation pool.

Further, the sedimentation tank includes PAC reaction tank, PAM reaction tank and sedimentation tank, is provided with first mixer in the PAC reaction tank, and the liquid of first elevator pump sending gets into PAM reaction tank after getting into the PAC reaction tank earlier, is provided with the second mixer in the PAM reaction tank, and the sewage that gets into PAM reaction tank flows into the sedimentation tank after handling.

Optionally, the air supporting device includes first buffer pool, second charge device, air supporting mechanism and second elevator pump, and first buffer pool passes through pipeline and sedimentation tank, and the second elevator pump is gone into the liquid pump in the first buffer pool and is floated mechanism, and the second charge device adds the medicine to air supporting mechanism.

Optionally, the hydrolysis A/O device comprises a hydrolysis mechanism, an aerobic tank, a second sedimentation mechanism and a sludge reflux pump, the air floatation mechanism is communicated with the hydrolysis mechanism through a conveying pipeline, the hydrolysis mechanism is communicated with the aerobic tank through a conveying pipeline, the aerobic tank is communicated with the second sedimentation mechanism through a conveying pipeline, and sludge in the second sedimentation mechanism is conveyed to the hydrolysis mechanism, the aerobic tank and the sludge treatment device through the sludge reflux pump.

Optionally, be provided with hydrolysis acidification pond, anaerobism pond and second buffer pool in the mechanism of hydrolysising, air supporting mechanism carries the liquid of mechanism of hydrolysising to flow into hydrolysis acidification pond, anaerobism pond and second buffer pool in proper order, is provided with the third elevator pump in the second buffer pool, and the aerobic tank is gone into with the liquid pump in the second buffer pool to the third elevator pump.

Further, the second sedimentation mechanism comprises a second sedimentation tank and a disinfection tank, liquid in the aerobic tank enters the second sedimentation mechanism, the sludge is conveyed to the sludge reflux pump, the liquid is conveyed to the disinfection tank, and the liquid is discharged after reaching the discharge requirement through disinfection treatment.

Optionally, the sludge treatment device comprises a sludge tank and a sludge dewatering tank, a supernatant reflux pump and a sludge delivery pump are arranged in the sludge tank, liquid in the sludge tank is guided into the sewage collecting tank by the supernatant reflux pump, sludge at the bottom of the sludge tank is delivered to the sludge dewatering tank by the sludge delivery pump, and the sludge dewatering tank is internally provided with a disc type dewatering machine.

The beneficial effects of the utility model at least comprise one of the following;

1. through setting up the sewage treatment plant who comprises flocculation and sedimentation device, air supporting device, sludge treatment device and the A/O device of hydrolysising, it can effectively get rid of the organic matter in the sewage and the suspension sediment, can reduce the COD in the sewage simultaneously.

2. The problem of current sewage treatment system filter through coagulating, precipitation method or membrane treatment mostly, and in the plant active ingredient extraction, its sewage characteristics are that the organic matter is too much, and the suspension sediment is also more, and COD discharges that the day value is great, and increase value is also on the high side the next day, but the BOD value is not high to wherein contain certain pigment, the current sewage treatment of this kind of condition is difficult to be suitable for is solved.

Drawings

FIG. 1 is a schematic view of a sewage treatment system;

FIG. 2 is a schematic view of another sewage treatment system;

labeled as: 1 is a flocculation sedimentation device, 2 is an air flotation device, 3 is a sludge treatment device, 4 is a hydrolysis A/O device, 5 is a sewage collection tank, 6 is a first sludge discharge pump, 7 is a first lift pump, 8 is a first medicine adding mechanism, 9 is a sedimentation tank, 10 is a PAC reaction tank, 11 is a PAM reaction tank, 12 is a first sedimentation tank, 13 is a first stirrer, 14 is a second stirrer, 15 is a first buffer tank, 16 is a second medicine adding device, 17 is an air flotation mechanism, 18 is a second lift pump, 19 is a sludge tank, 20 is a supernatant liquid reflux pump, 21 is a sludge delivery pump, 22 is a third medicine adding device, 23 is a sludge dewatering tank, 24 is a disc type dehydrator, 25 is a hydrolysis mechanism, 26 is a third lift pump, 27 is a hydrolysis acidification tank, 28 is an anaerobic tank, 29 is a second buffer tank, 30 is an aerobic tank, 31 is a sludge reflux pump, 32 is a second sedimentation tank, 33 is a second sedimentation mechanism, 34 is a disinfection tank.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in figures 1 and 2, a sewage treatment system comprises a flocculation sedimentation device 1, an air flotation device 2, a sludge treatment device 3 and a hydrolysis A/O device 4, wherein a feeding end of the flocculation sedimentation device 1 is communicated with a sewage feeding pipe, a discharging end of the flocculation sedimentation device 1 is communicated with a feeding end of the air flotation device 2 through a conveying pipeline, a discharging end of the air flotation device 2 is communicated with a feeding end of the hydrolysis A/O device 4 through a conveying pipeline, and the sludge treatment device 3 is respectively communicated with the flocculation sedimentation device 1, the air flotation device 2 and the hydrolysis A/O device 4 through sludge pipelines.

The purpose of design like this is that, through setting up the sewage treatment plant who comprises flocculation and sedimentation device, air supporting device, sludge treatment device and the A/O device of hydrolysising, it can effectively get rid of the organic matter in the sewage and the suspension sediment, can reduce the COD in the sewage simultaneously. The problem of current sewage treatment system filter through coagulating, precipitation method or membrane treatment mostly, and in the plant active ingredient extraction, its sewage characteristics are that the organic matter is too much, and the suspension sediment is also more, and COD discharges that the day value is great, and increase value is also on the high side the next day, but the BOD value is not high to wherein contain certain pigment, the current sewage treatment of this kind of condition is difficult to be suitable for is solved.

In practical use, the COD value of the sewage introduced in the current day is generally 2000-3000, the COD value is further increased to 4000-5000 in the next day, and the BOD value is not high, so that the sewage can be effectively removed by adopting the technical scheme provided by the system.

In the embodiment, specific compositions of the devices are also provided, wherein the flocculation and sedimentation device 1 comprises a sewage collection tank 5, a sedimentation tank 9 and a first dosing mechanism 8, a first sludge discharge pump 6 and a first lift pump 7 are arranged in the sewage collection tank 5, the first sludge discharge pump 6 is arranged at the bottom of the sewage collection tank 5, the first sludge discharge pump 6 can pump sludge at the bottom of the sewage collection tank 5 into the sludge treatment device 3, the first lift pump 7 is arranged in the middle of the sewage collection tank 5, the first lift pump 7 pumps liquid in the sewage collection tank 5 into the sedimentation tank 9, the first dosing mechanism 8 doses the liquid into the sedimentation tank 9, the sedimentation tank 9 comprises a PAC reaction tank 10, a PAM reaction tank 11 and a first sedimentation tank 12, a first stirrer 13 is arranged in the PAC reaction tank 10, the liquid pumped by the first lift pump 7 enters the PAC reaction tank 10 and then enters the PAM reaction tank 11, a second stirrer 14 is arranged in the PAM reaction tank 11, and the sewage entering the PAM reaction tank 11 is treated and then flows into the first settling tank 12.

The aim at of design like this, through PAC reaction tank and the PAM reaction tank that sets up, can carry out effectual flocculation to various organic matters in the sewage, the flocculating agent area of contact of sewage and interpolation can be increased to the first mixer and the second mixer that set up simultaneously, improves the flocculation effect.

After flocculation is completed, the air flotation device 2 comprises a first buffer tank 15, a second dosing device 16, an air flotation mechanism 17 and a second lift pump 18, the first buffer tank 15 is communicated with the first sedimentation tank 12 through a conveying pipeline, the second lift pump 18 pumps liquid in the first buffer tank 15 into the air flotation mechanism 17, and the second dosing device 16 doses the chemicals into the air flotation mechanism 17.

The purpose of design like this, scrape out through the impurity or the cinder that the scraper blade in the air supporting mechanism got up the air supporting and reach clear effect, the first buffer tank that sets up simultaneously can make through PAC reaction and PAM reaction back liquid tend to stably, is convenient for carry out the air supporting.

In this embodiment, the hydrolysis a/O device 4 includes a hydrolysis mechanism 25, an aerobic tank 30, a second sedimentation mechanism 33 and a sludge recirculation pump 31, the air flotation mechanism 17 is communicated with the hydrolysis mechanism 25 through a conveying pipeline, the hydrolysis mechanism 25 is communicated with the aerobic tank 30 through a conveying pipeline, the aerobic tank 30 is communicated with the second sedimentation mechanism 33 through a conveying pipeline, the sludge in the second sedimentation mechanism 33 is conveyed to the hydrolysis mechanism 25, the aerobic tank 30 and the sludge treatment device 3 through the sludge recirculation pump 31, a hydrolysis acidification tank 27, an anaerobic tank 28 and a second buffer tank 29 are arranged in the hydrolysis mechanism 25, the liquid conveyed to the hydrolysis mechanism 25 by the air flotation mechanism 17 sequentially flows into the hydrolysis acidification tank 27, the anaerobic tank 28 and the second buffer tank 29, a third lift pump 26 is arranged in the second buffer tank 29, the third lift pump 26 pumps the liquid in the second buffer tank 29 into the aerobic tank 30, the second sedimentation mechanism 33 includes a second sedimentation tank 32 and a disinfection tank 34, the liquid in the aerobic tank 30 enters a second sedimentation tank 32, wherein the sludge is conveyed to a sludge return pump 31, and the liquid is conveyed to a disinfection tank 34 and discharged after meeting the discharge requirement through disinfection treatment.

The purpose of the design is that the hydrolysis acidification tank, the anaerobic tank and the aerobic tank are arranged to complete the biochemical reaction on the whole sewage, the generated sludge flows back to the aerobic tank and the anaerobic tank from the second sedimentation tank through the sludge return pump, and the rest part is led into the sludge treatment device.

It should be noted that the PAC reaction tank, the PAM reaction tank, the aerobic tank, the anaerobic tank, and other equipment used in this embodiment are all prior art, and those skilled in the art can select appropriate types of equipment to assemble according to actual needs.

In this embodiment, sludge treatment device 3 includes sludge impoundment 19 and sludge dewatering tank 23, is provided with supernatant backwash pump 20 and sludge transfer pump 21 in the sludge impoundment 19, and supernatant backwash pump 20 is with leading-in sewage collecting pit 5 of liquid in the sludge impoundment 19, and sludge transfer pump 21 carries sludge to sludge dewatering tank 23 bottom sludge impoundment 19, is provided with dish hydroextractor 24 in the sludge dewatering tank 23.

The purpose of the design is that the sludge generated by the whole system is guided into the sludge tank to be stood, the clear liquid on the upper layer is guided into the sewage collecting tank again, and the sludge at the bottom is conveyed to the sludge dewatering tank again to be dewatered by a dewatering machine or a centrifugal machine, and then the sludge is uniformly reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage treatment system is characterized in that: including flocculation and sedimentation device (1), air supporting device (2), sludge treatment device (3) and hydrolysis AO device (4), the feed end and the sewage inlet pipe intercommunication of flocculation and sedimentation device (1), the discharge end of flocculation and sedimentation device (1) passes through the feed end intercommunication of pipeline and air supporting device (2), the discharge end of air supporting device (2) passes through the feed end intercommunication of pipeline and hydrolysis AO device (4), sludge treatment device (3) through mud pipeline respectively with flocculation and sedimentation device (1), air supporting device (2) and hydrolysis AO device (4) intercommunication.

2. The wastewater treatment system according to claim 1, wherein: the flocculation sedimentation device (1) comprises a sewage collecting tank (5), a sedimentation tank (9) and a first dosing mechanism (8), wherein a first row of dredge pumps (6) and a first lifting pump (7) are arranged in the sewage collecting tank (5), the first row of dredge pumps (6) are arranged at the bottom of the sewage collecting tank (5), and the first lifting pump (7) is arranged at the middle part of the sewage collecting tank (5).

3. The wastewater treatment system according to claim 2, wherein: sedimentation tank (9) include PAC reaction tank (10), PAM reaction tank (11) and first sedimentation tank (12), be provided with first mixer (13) in PAC reaction tank (10), be provided with second mixer (14) in PAM reaction tank (11).

4. A wastewater treatment system according to claim 3, characterized in that: the air floatation device (2) comprises a first buffer tank (15), a second medicine adding device (16), an air floatation mechanism (17) and a second lifting pump (18), wherein the first buffer tank (15) is communicated with the first sedimentation tank (12) through a conveying pipeline.

5. The wastewater treatment system according to claim 4, wherein: hydrolysis AO device (4) are including hydrolysising mechanism (25), good oxygen pond (30), second sediment mechanism (33) and mud backwash pump (31), air supporting mechanism (17) are through pipeline and hydrolysis mechanism (25) intercommunication, hydrolysis mechanism (25) are through pipeline and good oxygen pond (30) intercommunication, good oxygen pond (30) are through pipeline and second sediment mechanism (33) intercommunication.

6. The wastewater treatment system according to claim 5, wherein: a hydrolysis acidification tank (27), an anaerobic tank (28) and a second buffer tank (29) are arranged in the hydrolysis mechanism (25).

7. The wastewater treatment system according to claim 6, wherein: the second sedimentation mechanism (33) comprises a second sedimentation tank (32) and a disinfection tank (34).

8. The wastewater treatment system according to claim 7, wherein: the sludge treatment device (3) comprises a sludge pool (19) and a sludge dewatering pool (23), wherein a supernatant liquid reflux pump (20) and a sludge delivery pump (21) are arranged in the sludge pool (19), and a disc type dewatering machine (24) is arranged in the sludge dewatering pool (23).