CN115572024B - Distributed catering sewage integrated treatment system and treatment process thereof - Google Patents

Abstract

The invention discloses a distributed integrated treatment system for restaurant sewage, which comprises a machine body, wherein the machine body is internally divided into an oil separating area, a pre-settling area, an anaerobic area, an anoxic area, an aerobic area, a settling area and a disinfection water outlet area; the invention also discloses a distributed integrated treatment method for the restaurant sewage. Compared with the prior art, the invention can realize the in-situ collection, standard treatment and in-situ irrigation recycling of the catering sewage.

Description

Distributed catering sewage integrated treatment system and treatment process thereof

Technical Field

The invention relates to the technical field of catering sewage treatment, in particular to a distributed catering sewage integrated treatment system and a treatment process thereof.

Background

At present, the traditional methods for treating the restaurant sewage mainly comprise a physical method, a chemical method, a biological method and the like, wherein the physical method has large equipment investment and is generally used for pretreatment of the restaurant sewage; the chemical method has large sludge amount and high treatment cost; the biological method has large occupied area, long retention time and slow effect. Meanwhile, in view of the characteristics of dispersion of distribution of farmhouse happiness, civilian accommodation, rural holiday villages and the like, large change of water quality and water quantity of discharged sewage, high organic matter content, high oil content of sewage and the like, the traditional treatment method is not suitable for treating the catering sewage.

In recent years, due to the wide application of integrated sewage treatment equipment in the field of rural domestic sewage treatment, the treatment of catering sewage such as farmhouse-entertainment and the like gradually tends to the integrated equipment or a combined process of oil separation pretreatment, integrated sewage treatment equipment and advanced treatment. The system is applied to the research and development of an integrated treatment system for distributed catering sewage treatment, and has shown certain market demands.

However, the existing rural sewage treatment equipment is developed with the aim of treating rural farmer domestic sewage, and does not have an oil removal function, if the equipment is directly used for treating catering sewage, a large amount of grease contained in the sewage can cause serious impact on a biochemical treatment system, so that the biochemical treatment system is crashed, further the treated water does not reach the standard, and finally the serious pollution problem is brought to the surrounding water environment. In addition, in order to meet the treatment requirements, other sewage treatment equipment such as oil separating wells, septic tanks and the like are required to be additionally arranged, so that not only is the multi-excavation and segmented construction required, but also the operation, maintenance and management are not facilitated. Therefore, the existing integrated equipment is not suitable for treating restaurant sewage discharged by scattered small catering industries such as farmhouse, residential houses, rural holiday villages and the like.

Disclosure of Invention

The invention aims to provide a distributed integrated treatment system and a treatment process for restaurant sewage, which can realize on-site collection, standard treatment and on-site irrigation recycling of restaurant sewage.

The technical purpose of the invention is realized by the following technical scheme:

a distributed integrated treatment system for restaurant sewage comprises a machine body, wherein the machine body is divided into an oil separating area, a pre-settling area, an anaerobic area, an anoxic area, an aerobic area, a settling area and a disinfection water outlet area, a water inlet is formed in one side of the oil separating area, the bottom of the oil separating area is communicated with the pre-settling area, a water through hole is formed in the lower portion between the pre-settling area and the anaerobic area, a flow guide pipe is arranged between the anaerobic area and the anoxic area, between the anoxic area and the aerobic area, between the aerobic area and the settling area, between the settling area and the disinfection water outlet area, the upper end of the flow guide pipe is an inlet, the lower end of the flow guide pipe is an outlet, an overflow weir is arranged on one side of the disinfection water outlet area, a water outlet is formed in the other side of the disinfection water outlet area, and perforated aeration pipes are arranged at the bottoms of the anoxic area and the aerobic area, the perforated aeration pipe is provided with a plurality of air outlet holes, the air outlet holes are provided with disturbance heads, each disturbance head comprises a joint and a plurality of disturbance strips, the joints are connected with the air outlet holes, the disturbance strips are internally provided with communication channels, the side parts of the disturbance strips are provided with a plurality of air injection holes connected with the communication channels, the communication channels are communicated with the air outlet holes, the aerobic zone is internally provided with filler, the aerobic zone with be equipped with first return line between the anoxic zone, be equipped with mixed liquid backwash pump in the aerobic zone, mixed liquid backwash pump connects first return line, the settling zone with be equipped with second return line between the anaerobic zone, the settling zone is equipped with the sludge reflux pump, connect on the sludge reflux pump second return line, still be connected with the mud pipe on the sludge reflux pump.

In a preferred embodiment, a water-stop baffle is arranged in the pre-settling area, a grid support plate is arranged between the wall of the pre-settling area and the water-stop baffle, an oil-separation hanging basket is arranged on the grid support plate, and the width of the oil-separation hanging basket is equal to the distance between the water-stop baffle and the wall of the pre-settling area.

In a preferred embodiment, the top of the oil separation area is provided with an inspection hole, the elevation of the top of the oil separation hanging basket is lower than the elevation of the water inlet, and the plane size of the oil separation hanging basket is smaller than the size of the inspection hole.

In a preferred embodiment, an oil discharge port is arranged on the tank wall above the oil separation zone.

In a preferred embodiment, the disturbance strip comprises a flexible body and a shaping strip, the communication channel and the air injection hole are arranged in the flexible body, the shaping strip is embedded in the flexible body, the disturbance strip is arranged in a spiral shape, the number of spiral turns is not more than 0.5 turn, and the plurality of disturbance strips jointly form a cylindrical structure.

In a preferred embodiment, the joint includes connecting pipe, flexible hose and movable head, the connecting pipe is connected the venthole, keeping away from of connecting pipe the one end of venthole is equipped with the sphere and holds the chamber, the movable head is including spherical portion, connecting portion and the disk portion that connects gradually, the inside cavity that is equipped with of movable head, spherical portion is located in the sphere holds the chamber, the sphere holds and is equipped with first magnet on the chamber wall in chamber, the surface of spherical portion be equipped with first magnet repellent's second magnet, flexible hose one end intercommunication the venthole, the other end intercommunication the cavity, the end fixing of disturbance strip in disk portion, intercommunication passageway intercommunication the cavity.

In a preferred embodiment, the aerobic zone is provided with an upper grating plate and a lower grating plate, and uniformly distributed MBBR fillers are arranged between the two grating plates in a color mode.

In a preferred embodiment, the water outlet zone is provided with an observation well.

In a preferred embodiment, the sludge discharge pipe and the second return pipeline are connected with the sludge return pump through a three-way joint, and valves are respectively arranged on the sludge discharge pipe and the second return pipeline.

The integrated treatment process of the distributed restaurant sewage comprises the steps of introducing the sewage into the integrated treatment system of the distributed restaurant sewage, and discharging the sewage after treatment.

Compared with the prior art, the invention provides a distributed catering sewage integrated treatment system and a treatment process, which have the advantages of convenient construction, small occupied area, easy maintenance, high-efficiency oil removal and water outlet metering functions, and can realize on-site collection, standard treatment and on-site irrigation recycling of catering sewage; the device is highly integrated, and equipment such as an oil separating well, a septic tank and the like is not required to be additionally and independently arranged, and segmental excavation and segmental construction are not required, so that great convenience is brought to construction, installation and subsequent operation and maintenance; the AA/O (MBBR) process is adopted, and biological fillers are added in an aerobic zone of the system, so that the biological nitrogen and phosphorus removal effect of the system can be enhanced, and the sewage treatment efficiency is improved; the diversion pipes are arranged at the water inlet positions of the anaerobic zone, the anoxic zone, the aerobic zone and the sedimentation zone to guide sewage, so that the flow state of the sewage entering each zone is optimized, the short flow phenomenon is avoided, and the hydraulic retention time is ensured; it sets up the perforation aeration pipe, mixes the liquid through the effort of air in to anoxic zone and the aerobic zone and stirs, and simultaneously, it sets up the disturbance head on the perforation aeration pipe, and when giving vent to anger, the disturbance head produces the disturbance, produces more violent disturbance effect.

Drawings

FIG. 1 is a top view (with inspection holes omitted) of a distributed integrated restaurant wastewater treatment system according to the invention.

Fig. 2 isbase:Sub>A schematic longitudinal sectional view ofbase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a schematic longitudinal sectional structure of B-B in fig. 1.

FIG. 4 is a schematic structural diagram of a disturbance head applied to a distributed integrated restaurant sewage treatment system.

FIG. 5 is a schematic longitudinal sectional structure diagram of a disturbance head applied to a distributed integrated restaurant sewage treatment system.

FIG. 6 is a schematic cross-sectional structure diagram of a disturbance strip applied to a distributed integrated restaurant wastewater treatment system.

In the figure

A pre-settling zone 1; an oil separating area 2; an anaerobic zone 3, an anoxic zone 4, an aerobic zone 5 and a precipitation zone 6; a disinfection effluent area 7; a water inlet 8; a grid support plate 9; an oil removal hanging basket 10; a hanging basket handle 11; a water-stop baffle 12; water passing holes 13; an inspection hole 14; a grid plate 15; a filler 16; a second return conduit 17; a draft tube 18; a valve 19; a sludge discharge pipe 20; a sludge reflux pump 21; a water outlet 22; a first return pipe 23; a mixed liquid reflux pump 24; a blower 25; an overflow weir 26; perforated aeration pipes 27; an air outlet 28; a connection pipe 29; a spherical accommodation chamber 30; a first magnet 31; a flexible hose 32; a spherical portion 33; a second magnet 34; a connecting portion 35; a disk portion 36; a cavity 37; a disturbance bar 38; a flexible body 39; a communication passage 40; the gas ejection holes 41; a shaping strip 42.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

As shown in fig. 1 to 6, a distributed restaurant sewage integrated treatment system comprises a machine body, the machine body is divided into an oil separating area 2, a pre-settling area 1, an anaerobic area 3, an anoxic area 4, an aerobic area 5, a settling area 6 and a disinfection water outlet area 7, one side of the oil separating area 2 is provided with a water inlet 8, the bottom of the oil separating area is communicated with the pre-settling area 1, a water through hole 13 is arranged between the pre-settling area 1 and the anaerobic area 3, the anoxic area 4, the aerobic area 5, the settling area 6 and the disinfection water outlet area 7 are provided with a flow guide pipe 18, the upper end of the flow guide pipe 18 is an inlet, the lower end of the flow guide pipe 18 is an outlet, sewage enters the flow guide pipe 18 from the upper part and enters the lower part of the next functional area through the flow guide pipe 18, one side of the disinfection water outlet area 7 is provided with an overflow weir 26, a water outlet 22 is arranged on the other side of the aerobic zone 4, perforated aeration pipes 27 are arranged at the bottoms of the anoxic zone 5 and the aerobic zone 4, the perforated aeration pipes 27 are connected with a blower 25, a plurality of air outlets 28 are arranged on the perforated aeration pipes 27, disturbance heads are arranged on the air outlets 28 and comprise joints and a plurality of disturbance strips 38, the joints are connected with the air outlets 28, a communication channel 40 is arranged in each disturbance strip 38, a plurality of air outlets 41 connected with the communication channel 40 are arranged on the side part of each disturbance strip, the communication channel 40 is communicated with the air outlets 28, a filler 16 is arranged in the aerobic zone 5, a first return pipeline 23 is arranged between the aerobic zone 5 and the anoxic zone 4, a mixed liquid return pump 24 is arranged in the aerobic zone 5, the mixed liquid return pump 24 is connected with the first return pipeline 23, and a second return pipeline 17 is arranged between the sedimentation zone 6 and the anaerobic zone 3, the settling zone 6 is provided with a sludge return pump 21, the sludge return pump 21 is connected with the second return pipeline 17, and the sludge return pump 21 is also connected with a sludge discharge pipe.

The distributed integrated treatment system for the restaurant sewage is convenient to construct, small in occupied area and easy to maintain, has the functions of efficient oil removal and water outlet metering, and can realize on-site collection, standard treatment and on-site irrigation recycling of the restaurant sewage; the device is highly integrated, and equipment such as an oil separating well, a septic tank and the like is not required to be additionally and independently arranged, and segmental excavation and segmental construction are not required, so that great convenience is brought to construction, installation and subsequent operation and maintenance; the AA/O (MBBR) process is adopted, and the biological filler 16 is added in the aerobic zone 5 of the system, so that the biological nitrogen and phosphorus removal effect of the system can be enhanced, and the sewage treatment efficiency is improved; the water inlet positions of the anaerobic zone 3, the anoxic zone 4, the aerobic zone 5 and the sedimentation zone 6 are all provided with the flow guide pipes 18 for guiding sewage, so that the flow state of the sewage entering each zone is optimized, the short flow phenomenon is avoided, and the hydraulic retention time is ensured; it sets up perforation aeration pipe 27, and the effort through the air stirs the mixed liquid in anoxic zone 4 and the good oxygen district 5, and simultaneously, it sets up the disturbance head on perforation aeration pipe 27, when giving vent to anger, and the disturbance head produces the disturbance, produces more violent disturbance effect.

Particularly, make venthole 28 intermittent type nature ventilate at the during operation, in the in-process of intermittent type nature ventilation, disturbance strip 38 stretches the expansion under the condition of air, contracts under the condition of not ventilating to make disturbance strip 38 produce the process of repeated expansion and contraction, effectively aggravate the disturbance effect, utilize disturbance strip 38 simultaneously, make gaseous dispersion, promoted the disturbance effect of air current.

Be provided with water proof baffle 12 in the zone of sinking in advance 1, the pool wall in zone of sinking in advance 1 with be equipped with grid backup pad 9 between water proof baffle 12, be equipped with oil removal string basket 10 on grid backup pad 9, be equipped with string basket handle 11 on oil removal string basket 10, the oil removal string basket 10 the width with water proof baffle 12 with distance between the pool wall in zone of sinking in advance 1 equals, and water proof baffle 12 and pool wall side respectively are equipped with the bayonet socket, hang basket 10 phase-match with the oil removal to guarantee that oil removal string basket 10 is stable to be installed, do not turn on one's side and do not empty at the operation in-process.

The top in oil separation district 2 is equipped with inspection hole 14, the top elevation of oil separation hanging basket 10 is less than the elevation of water inlet 8, the planar dimension of oil separation hanging basket 10 is less than the size of inspection hole 14 to the hanging basket is taken out from inspection hole 14, makes things convenient for relevant personnel to regularly draw out fortune dimension.

Alternatively, in the oil separation zone 2, without the oil separation basket 10, fine sand may be provided for oil separation.

An oil discharge port is arranged on the tank wall above the oil separation area 2 and is arranged close to the upper part, so that maintenance can be conveniently carried out at proper time, and subsequent process treatment units are prevented from being influenced by accumulated oil.

The disturbance strip 38 comprises a flexible body 39 and a shaping strip 42, the communication channel 40 and the air injection hole 41 are arranged in the flexible body 39, the shaping strip 42 is embedded in the flexible body 39, the disturbance strip 38 is arranged in a spiral shape, the number of spiral turns is not more than half of a turn, and the plurality of disturbance strips 38 jointly form a cylindrical structure. The shaping strip 42 is preferably made of steel wires and used for generating restoring force for restoring the disturbance strips 38 to the spiral shape, the flexible body 39 is preferably supported by rubber and used for providing good flexibility, under the structural arrangement, when the disturbance strips 38 are ventilated and unfolded, the disturbance strips 38 are spirally unfolded to generate annular stirring effect on water, and when the disturbance strips 38 act, force is applied to the same circumference, so that better disturbance effect is generated.

Further, the joint includes connecting pipe 29, flexible hose 32 and activity head, connecting pipe 29 connects venthole 28, keeping away from of connecting pipe 29 the one end of venthole 28 is equipped with the sphere and holds chamber 30, the activity head is including spherical portion 33, connecting portion 35 and the disk portion 36 that connect gradually, the inside cavity 37 that is equipped with of activity head, spherical portion 33 is located in the sphere holds chamber 30, the sphere holds and is equipped with first magnet 31 on the chamber wall of chamber 30, the surface of spherical portion 33 be equipped with the second magnet 34 that first magnet 31 repels, flexible hose 32 one end intercommunication venthole 28, the other end intercommunication cavity 37, the end fixing of disturbance strip 38 in disk portion 36, intercommunication passageway 40 intercommunication cavity 37. Under such structural configuration, under the effect of first magnet 31 and second magnet 34, spherical portion 33 presents the suspension form to rotate more easily, and effectively reduce the noise when moving, make the home range increase of disturbance head through the setting of activity head, thereby can promote the disturbance effect more effectively.

The aerobic zone 5 is provided with an upper grating plate 15 and a lower grating plate 15, and MBBR fillers 16 which are uniformly distributed are arranged between the two grating plates 15.

The hydraulic retention time ranges of the pre-settling zone 1, the anaerobic zone 3, the anoxic zone 4 and the aerobic zone 5 are respectively 6.5-8h, 1.0-1.8h, 2.5-3.5h and 9-12h.

And the water outlet area is provided with an observation well so as to observe the water outlet condition at any time.

The sludge discharge pipe 20 and the second return pipeline 17 are connected with the sludge return pump 21 through a three-way joint, the sludge discharge pipe 20 and the second return pipeline 17 are respectively provided with a valve 19, and sludge return or sludge discharge is controlled by controlling the switch of the valve 19.

The integrated treatment process of the distributed catering sewage comprises the steps of introducing the sewage into the integrated treatment system of the distributed catering sewage, and discharging the sewage after treatment.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" or "comprising 8230; \8230;" does not exclude additional elements from existing in a process, method, article, or terminal device that comprises the element. Further, herein, "greater than," "less than," "more than," and the like are understood to exclude the present numbers; the terms "above", "below", "within" and the like are to be understood as including the number.

The foregoing description of the embodiments is provided to facilitate an understanding and use of the invention by those skilled in the art, and it will be readily apparent to those skilled in the art that various modifications may be made to the embodiments and that the generic principles defined herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.

Claims (9)

1. A distributed catering sewage integrated treatment system is characterized by comprising a machine body, wherein the machine body is divided into an oil separation zone, a pre-settling zone, an anaerobic zone, an anoxic zone, an aerobic zone, a settling zone and a disinfection water outlet zone, a water inlet is formed in one side of the oil separation zone, the bottom of the oil separation zone is communicated with the pre-settling zone, a water through hole is formed in the lower portion between the pre-settling zone and the anaerobic zone, the anoxic zone, the aerobic zone, the settling zone, a flow guide pipe is arranged between the settling zone and the disinfection water outlet zone, the upper end of the flow guide pipe is an inlet, the lower end of the flow guide pipe is an outlet, an overflow weir is arranged on one side of the disinfection water outlet zone, a water outlet is formed in the other side of the anaerobic zone and the aerobic zone, perforated aeration pipes are arranged at the bottoms of the anoxic zone and the aerobic zone, a plurality of air outlet holes are formed in the perforated aeration pipes, disturbance heads are arranged on the air outlet holes and comprise joints and a plurality of disturbance strips, the joints are connected with the air outlet holes, a second reflux pump is arranged in the aerobic reflux zone, a sludge reflux mixed liquor pump is connected with a second reflux pump, a sludge reflux pump is arranged in the aerobic reflux zone, and a sludge reflux pump is arranged in the sludge reflux zone; the disturbance strip comprises a flexible body and a shaping strip, the communicating channel and the air injection hole are formed in the flexible body, the shaping strip is embedded into the flexible body, the disturbance strip is set to be spiral, the number of spiral turns is not more than 0.5 turn, and the plurality of disturbance strips form a cylindrical structure together.

2. The integrated treatment system for distributed restaurant sewage as claimed in claim 1, wherein a water-stop baffle is disposed in the pre-settling area, a grid support plate is disposed between the wall of the pre-settling area and the water-stop baffle, an oil-separation hanging basket is disposed on the grid support plate, and the width of the oil-separation hanging basket is equal to the distance between the water-stop baffle and the wall of the pre-settling area.

3. The integrated treatment system for distributed restaurant sewage as claimed in claim 2, wherein an inspection hole is formed in the top of the oil separation area, the elevation of the top of the oil separation hanging basket is lower than that of the water inlet, and the plane size of the oil separation hanging basket is smaller than that of the inspection hole.

4. The integrated treatment system for distributed restaurant sewage as claimed in claim 1, wherein an oil discharge port is formed on the tank wall above the oil separating area.

5. The integrated treatment system for the distributed catering sewage according to claim 1, wherein the joint comprises a connecting pipe, a flexible hose and a movable head, the connecting pipe is connected with the air outlet, one end of the connecting pipe, which is far away from the air outlet, is provided with a spherical accommodating cavity, the movable head comprises a spherical part, a connecting part and a disc-shaped part which are sequentially connected, a cavity is arranged inside the movable head, the spherical part is arranged in the spherical accommodating cavity, a first magnet is arranged on the cavity wall of the spherical accommodating cavity, a second magnet which is repellent to the first magnet is arranged on the surface of the spherical part, one end of the flexible hose is communicated with the air outlet, the other end of the flexible hose is communicated with the cavity, the end part of the disturbance strip is fixed on the disc-shaped part, and the communication channel is communicated with the cavity.

6. The integrated treatment system for distributed restaurant sewage as claimed in claim 1, wherein said aerobic zone is provided with an upper grid plate and a lower grid plate, and MBBR filler is uniformly distributed between said two grid plates.

7. The integrated distributed restaurant sewage treatment system as claimed in claim 1, wherein said effluent area is provided with an observation well.

8. The integrated treatment system for distributed restaurant sewage as claimed in claim 1, wherein said sludge discharge pipe and said second return pipe are connected with said sludge reflux pump through a tee joint, and said sludge discharge pipe and said second return pipe are respectively provided with a valve.

9. A process for integrally treating the sewage generated by the restaurant features that the sewage is introduced to the system for integrally treating the sewage generated by restaurant in any one of claims 1-8 and treated for discharge.

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