CN219907331U - Pretreatment device for domestic sewage - Google Patents
Pretreatment device for domestic sewage Download PDFInfo
- Publication number
- CN219907331U CN219907331U CN202321260355.5U CN202321260355U CN219907331U CN 219907331 U CN219907331 U CN 219907331U CN 202321260355 U CN202321260355 U CN 202321260355U CN 219907331 U CN219907331 U CN 219907331U
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- CN
- China
- Prior art keywords
- sedimentation tank
- domestic sewage
- box body
- sewage
- coagulating sedimentation
- Prior art date
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- 239000010865 sewage Substances 0.000 title claims abstract description 50
- 238000004062 sedimentation Methods 0.000 claims abstract description 52
- 230000001112 coagulating effect Effects 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000005189 flocculation Methods 0.000 claims abstract description 14
- 230000016615 flocculation Effects 0.000 claims abstract description 14
- 230000003311 flocculating effect Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000008394 flocculating agent Substances 0.000 claims description 4
- 229910021536 Zeolite Inorganic materials 0.000 claims description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 239000010457 zeolite Substances 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims 1
- 238000011282 treatment Methods 0.000 abstract description 26
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 4
- 229910021529 ammonia Inorganic materials 0.000 abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 230000003749 cleanliness Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract description 2
- 239000005416 organic matter Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
- 239000002184 metal Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 208000035473 Communicable disease Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Landscapes
- Water Treatment By Sorption (AREA)
Abstract
The pretreatment device for domestic sewage comprises a grid well, a coagulating sedimentation tank and a flocculating sedimentation tank, wherein the grid well is connected with the coagulating sedimentation tank, and the coagulating sedimentation tank is connected with the flocculating sedimentation tank; a combined filtering structure is arranged between the coagulating sedimentation tank and the flocculation sedimentation tank. The utility model adopts the above structure, can carry out a lot of filtration to sediment, suspended solid to the in-process of reason sewage at the initial stage of living sewage production, improve the cleanliness of sewage after the processing, reduce ammonia, nitrogen and organic matter content, the sewage after its processing can directly be discharged into urban drainage pipe network to can reduce sewage treatment plant's the processing degree of difficulty when getting into rear end sewage treatment plant through urban drainage pipe network, improve treatment efficiency.
Description
Technical Field
The utility model relates to the technical field of sewage treatment, in particular to a pretreatment device for domestic sewage.
Background
The urban sewage mainly comprises domestic sewage and industrial sewage, and is mainly collected by urban drainage pipe networks and conveyed to sewage treatment plants for treatment at present. The domestic sewage has relatively complex components, high ammonia nitrogen content and relatively complex treatment flow, and the living sewage remains for a long time, so that the microorganism which grows can cause air pollution around the water body besides the malodor which is emitted due to the microbial reaction, and the individual diseases and even outbreaks of infectious diseases are easily caused.
Based on the above, if the sewage treatment device can treat industrial sewage, the sewage can be pretreated at the initial stage of the generation of the domestic sewage and then discharged into the urban drainage pipe network, the treatment efficiency of the sewage treatment plant at the rear end can be effectively improved, and the influence of the domestic sewage on the urban environment and the drainage pipe network can be reduced.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a pretreatment device for domestic sewage, which is used for solving the technical problem in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme: the pretreatment device for domestic sewage comprises a grid well, a coagulating sedimentation tank and a flocculating sedimentation tank, wherein the grid well is connected with the coagulating sedimentation tank, and the coagulating sedimentation tank is connected with the flocculating sedimentation tank;
and a combined filtering structure is arranged between the coagulating sedimentation tank and the flocculation sedimentation tank.
In the preferred scheme, the coagulating sedimentation tank is provided with a coagulant feeding device and a first stirring device.
In the preferred scheme, the coagulating sedimentation tank and the flocculation sedimentation tank between be equipped with multichannel parallel water route, be equipped with a combination filtration on every parallel water route.
In a preferred scheme, the combined filtering structure comprises a closed box body, wherein a water inlet and a water outlet are respectively arranged at two ends of the closed box body;
the closed box body is internally provided with a plurality of drawing type frame body brackets, the drawing type frame body brackets are provided with drawing handles, and the drawing type frame body brackets are internally provided with adsorption filter materials.
In the preferred scheme, the adsorption filter material arranged in the drawing frame body bracket sequentially comprises a coarse sand layer, a fine sand layer, a zeolite layer, a high-density polyurethane sponge filler layer and an active carbon layer from a water inlet to a water outlet.
In the preferred scheme, one surface of the closed box body is an open surface, a box body cover plate is arranged on the open surface of the closed box body, and the box body cover plate is fixed on the closed box body through a fastening bolt.
In the preferred scheme, the box cover plate is provided with sealing strip caulking grooves on the box wall plate around the opening surface where the box cover plate is located, and sealing strips are arranged in the sealing strip caulking grooves.
In the preferred scheme, a flocculating agent feeding device and a second stirring device are arranged on the flocculating and settling tank.
The pretreatment device for domestic sewage provided by the utility model is used for pretreating domestic sewage in a physical and chemical mode by adopting the structure, has the advantages of strong pertinence, easiness in operation, simple structure and low construction and maintenance cost, can be used for filtering precipitated slag and suspended matters for many times in the sewage treatment process in the initial stage of the production of the domestic sewage, improves the cleanliness of the treated sewage, reduces the contents of ammonia, nitrogen and organic matters, can directly discharge the treated sewage into a municipal drainage pipe network, and can reduce the treatment difficulty of the sewage treatment plant and improve the treatment efficiency when entering a sewage treatment plant at the rear end through the municipal drainage pipe network.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic structural view of the present utility model.
FIG. 2 is a schematic structural view of the combined filter structure of the present utility model.
In the figure: grid well 1, coagulating sedimentation tank 2, coagulant feeding device 21, first agitating unit 22, coagulating sedimentation tank 3, flocculant feeding device 31, second agitating unit 32, composite filter structure 4, water inlet 41, closed box 42, box apron 43, box wallboard 44, sealing strip caulking groove 45, pull frame support 46, pull handle 47, fastening bolt 48, delivery port 49.
Detailed Description
Example 1:
as shown in fig. 1-2, a pretreatment device for domestic sewage comprises a grid well 1, a coagulating sedimentation tank 2 and a flocculating sedimentation tank 3, wherein the grid well 1 is connected with the coagulating sedimentation tank 2, and the coagulating sedimentation tank 2 is connected with the flocculating sedimentation tank 3;
a combined filtering structure 4 is arranged between the coagulating sedimentation tank 2 and the flocculating sedimentation tank 3.
In a preferred scheme, the coagulating sedimentation tank 2 is provided with a coagulant feeding device 21 and a first stirring device 22, PAC is added into the coagulating sedimentation tank 2 as a coagulant and stirred, so that domestic sewage can be treated for the second time by using the coagulation effect in the coagulating sedimentation tank 2.
In the preferred scheme, a plurality of parallel waterways are arranged between the coagulating sedimentation tank 2 and the flocculating sedimentation tank 3, and a combined filtering structure 4 is arranged on each parallel waterway.
In this embodiment, the combined filtering structure 4 mainly performs adsorption and filtering treatment on the overflow water body after coagulation through the physical adsorption and filtering structure, so as to reduce the flocculant dosage in the flocculation sedimentation tank 3 connected thereafter and improve the flocculation effect, and the parallel waterway structure is provided to connect the flocculation sedimentation tank 2 and the flocculation sedimentation tank 3, so that the water passing quantity on different combined filtering structures 4 can be automatically distributed through the parallel waterway under the condition of not externally adding pumping pressure, and the use states of different combined filtering structures 4 can be judged from the water flow on the corresponding pipeline, thereby facilitating the replacement of the corresponding drawing type frame support 46.
In the preferred scheme, the combined filtering structure 4 is a consumable structure in the pretreatment device, and can be replaced integrally, and consumable components can be replaced integrally. In this embodiment, the combined filtering structure is a consumable component replacement structure, and the combined filtering structure 4 specifically comprises:
comprises a closed box body 42, wherein both ends of the closed box body 42 are respectively provided with a water inlet 41 and a water outlet 49;
the closed box 42 is provided with a plurality of drawing frame supports 46, the drawing frame supports 46 are provided with drawing handles 47, and the drawing frame supports 46 are internally provided with adsorption filter materials.
In a preferred embodiment, the adsorption filter material disposed in the drawing frame support 46 comprises a coarse sand layer with a diameter of 1.5-2.0 mm, a fine sand layer with a diameter of 0.3-0.6 mm, a zeolite layer, a high-density polyurethane sponge filler layer and an activated carbon layer from the water inlet 41 to the water outlet 49.
In addition, the sectional area of the drawing frame support 46 on the water passing plane is 10 times of the sectional area of the water inlet 41 and the water outlet 49 of the corresponding closed box 42, so as to ensure that the sewage fully contacts with the whole surface of the adsorption filtering structure in the drawing frame support 46
In a preferred embodiment, one surface of the closed casing 42 is an open surface, a casing cover 43 is provided on the open surface of the closed casing 42, and the casing cover 43 is fixed to the closed casing 42 by fastening bolts 48.
The pull-out frame support 46 has a pull-out structure, and the pull-out frame support 46 is replaced by pulling and inserting the pull-out frame support 46 at a position corresponding to a preformed slot on the case wall plate 44 through a built-in pull-out handle 47 arranged on the top surface of the pull-out frame support 46; after the replacement operation is completed, corresponding sealing strips are pressed into sealing strip embedding grooves 45 correspondingly arranged on the top surface of the box body wall plate 44, then the box body cover plate 43 is covered, and the fastening bolts 48 are screwed, so that the maintenance operation of the combined filter structure 4 is completed.
In a preferred scheme, sealing strip embedding grooves 45 are formed in the box wall plates 44 around the opening face where the box cover plate 43 is located, and sealing strips are arranged in the sealing strip embedding grooves 45.
In the preferred scheme, the flocculation sedimentation tank 3 is provided with a flocculating agent feeding device 31 and a second stirring device 32, PAM is added into the flocculation sedimentation tank 3 as a flocculating agent and is stirred, the last procedure of pretreatment of domestic sewage can be completed in the flocculation sedimentation tank 3 by utilizing flocculation, and treated water which can be directly discharged into a municipal drainage pipe network is obtained after sedimentation is completed.
Example 2:
based on example 1:
if the solid waste with smaller size needs to be cleaned further, a metal filter screen can be arranged between the grid well 1 and the coagulating sedimentation tank 2, the metal filter screen is of a replaceable structure in consideration of abrasion of the metal filter screen, and the most suitable size of the mesh of the metal filter screen is 30-60 meshes in consideration of combined filtering performance with the grid well 1.
Example 3:
based on example 1:
the multi-channel parallel waterway 3 is replaced by a pipeline with pumping equipment, but the adsorption and filtration effect of the adsorption and filtration material is slightly poorer due to pumping pressure.
The pretreatment structure in the embodiment has the advantages of simple integral structure, easy field implementation, low operation difficulty and better suitability when being combined with other sewage treatment equipment. The domestic sewage is subjected to a series of physical/chemical treatments, so that most of ammonia, nitrogen and organic matters in the water can be removed, physical impurities are filtered, the urban drainage pipe network is not easy to be blocked, the treatment difficulty of the sewage treatment plant can be reduced when the domestic sewage enters the rear-end sewage treatment plant through the urban drainage pipe network, and the treatment efficiency is improved. Meanwhile, the treatment process only uses a physical/chemical mode to carry out treatment, and biological reaction treatment is not involved, so that long-time accumulation of water is not needed, and odor is not generated; and the sediment precipitated in the coagulating sedimentation tank 2 and the flocculating sedimentation tank 3 can be separated for secondary treatment and recycling.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present utility model. Furthermore, it is to be understood that various changes, modifications and/or variations may be made by those skilled in the art after reading the technical content of the present utility model, and that all such equivalents are intended to fall within the scope of the present utility model as defined in the appended claims.
Claims (8)
1. A preprocessing device for domestic sewage, its characterized in that: the device comprises a grid well (1), a coagulating sedimentation tank (2) and a flocculation sedimentation tank (3), wherein the grid well (1) is connected with the coagulating sedimentation tank (2), and the coagulating sedimentation tank (2) is connected with the flocculation sedimentation tank (3);
a combined filtering structure (4) is arranged between the coagulating sedimentation tank (2) and the flocculating sedimentation tank (3).
2. A pretreatment device for domestic sewage according to claim 1, wherein: the coagulating sedimentation tank (2) is provided with a coagulant feeding device (21) and a first stirring device (22).
3. A pretreatment device for domestic sewage according to claim 1, wherein: a plurality of parallel waterways are arranged between the coagulating sedimentation tank (2) and the flocculating sedimentation tank (3), and a combined filtering structure (4) is arranged on each parallel waterway.
4. A pretreatment device for domestic sewage according to claim 3, wherein: the combined filtering structure (4) comprises a closed box body (42), and a water inlet (41) and a water outlet (49) are respectively arranged at two ends of the closed box body (42);
a plurality of drawing frame body brackets (46) are arranged in the closed box body (42), a lifting handle (47) is arranged on the drawing frame body brackets (46), and adsorption filter materials are arranged in the drawing frame body brackets (46).
5. A pretreatment device for domestic sewage as claimed in claim 4, wherein: the adsorption filter material arranged in the drawing type frame body support (46) comprises a coarse sand layer, a fine sand layer, a zeolite layer, a high-density polyurethane sponge filler layer and an active carbon layer from a water inlet (41) to a water outlet (49).
6. A pretreatment device for domestic sewage as claimed in claim 4, wherein: one surface of the closed box body (42) is an open surface, a box body cover plate (43) is arranged on the open surface of the closed box body (42), and the box body cover plate (43) is fixed on the closed box body (42) through a fastening bolt (48).
7. A pretreatment device for domestic sewage as claimed in claim 6, wherein: sealing strip caulking grooves (45) are formed in the box wall plates (44) around the opening face where the box cover plate (43) is located, and sealing strips are arranged in the sealing strip caulking grooves (45).
8. A pretreatment device for domestic sewage according to claim 1, wherein: the flocculation sedimentation tank (3) is provided with a flocculating agent feeding device (31) and a second stirring device (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260355.5U CN219907331U (en) | 2023-05-23 | 2023-05-23 | Pretreatment device for domestic sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321260355.5U CN219907331U (en) | 2023-05-23 | 2023-05-23 | Pretreatment device for domestic sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219907331U true CN219907331U (en) | 2023-10-27 |
Family
ID=88429181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321260355.5U Active CN219907331U (en) | 2023-05-23 | 2023-05-23 | Pretreatment device for domestic sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219907331U (en) |
-
2023
- 2023-05-23 CN CN202321260355.5U patent/CN219907331U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |