CN115432883B - Rural distributed intelligent domestic sewage treatment method and pretreatment device - Google Patents
Rural distributed intelligent domestic sewage treatment method and pretreatment device Download PDFInfo
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- CN115432883B CN115432883B CN202210939056.8A CN202210939056A CN115432883B CN 115432883 B CN115432883 B CN 115432883B CN 202210939056 A CN202210939056 A CN 202210939056A CN 115432883 B CN115432883 B CN 115432883B
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- 239000010865 sewage Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 93
- 238000004140 cleaning Methods 0.000 claims abstract description 48
- 238000001914 filtration Methods 0.000 claims abstract description 39
- 239000007787 solid Substances 0.000 claims abstract description 32
- 239000012535 impurity Substances 0.000 claims abstract description 28
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 77
- 239000010802 sludge Substances 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010840 domestic wastewater Substances 0.000 claims description 3
- 230000002550 fecal effect Effects 0.000 claims description 3
- 210000004209 hair Anatomy 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052698 phosphorus Inorganic materials 0.000 claims description 3
- 239000011574 phosphorus Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 10
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 241000282472 Canis lupus familiaris Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/643—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a combination of movements with respect to the filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
- B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention relates to the technical field of sewage treatment, in particular to a rural distributed intelligent domestic sewage treatment method and a pretreatment device, which comprise the treatment steps of prefiltering, solid decomposition, wastewater decomposition, secondary filtration and sewage discharge. According to the invention, domestic cleaning wastewater can be injected into the tank body through the filtering module of the pretreatment device, the baffle plate can block the wastewater, so that the wastewater can be reserved in the tank body for a period of time, solid impurities in the wastewater can be precipitated at the bottom of the tank body, then the baffle plate can be lowered, the wastewater can slowly flow out of the tank body through the filter screen, the wastewater is prevented from directly flushing the filter screen, the filter screen is not easy to be blocked by the solid impurities, the filtering of the wastewater is convenient, and the floating block can float on the water surface, so that the baffle plate can be pulled by the pull wire, the baffle plate can slowly descend along with the water surface of the wastewater, so that the wastewater can be slowly discharged through the top of the baffle plate, and the solid impurities at the bottom of the tank body are prevented from being greatly disturbed when the wastewater is discharged.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a rural distributed intelligent domestic sewage treatment method and a pretreatment device.
Background
The domestic sewage is the wastewater discharged in village daily life, the pollutants contained in the domestic sewage are mainly organic matters, a large number of pathogenic microorganisms and the like, and the organic matters existing in the domestic sewage are extremely unstable and are easy to decompose to generate malodor, so that the domestic sewage must be treated before being discharged, the conventional rural distributed intelligent domestic sewage treatment process is generally carried out by directly filtering the domestic cleaning wastewater through a filter screen when the domestic cleaning wastewater is treated, the wastewater can directly impact the filter screen, so that solid impurities in the wastewater are easy to be stuck on the filter screen, and the filter screen is easy to be blocked by the solid impurities after long-time use, so that the use is inconvenient.
Disclosure of Invention
In order to overcome the technical problems, the invention aims to provide a rural decentralized intelligent domestic sewage treatment method and a pretreatment device, domestic cleaning wastewater can be injected into a tank body through a filtering module of the pretreatment device, a baffle plate can block the wastewater, so that the wastewater can be reserved for a period of time in the tank body, solid impurities in the wastewater can be deposited at the bottom of the tank body, then the baffle plate can be lowered, the wastewater can slowly flow out of the tank body through a filter screen, the filter screen is prevented from being directly washed by the wastewater, the solid impurities are not easy to block the filter screen, and the filtering of the wastewater is facilitated.
The aim of the invention can be achieved by the following technical scheme:
a rural decentralized intelligent domestic sewage treatment method comprises the treatment steps of prefiltering, solid decomposition, wastewater decomposition, secondary filtration and sewage discharge, and specifically comprises the following steps of;
(1) Pretreatment: the method comprises the steps of (1) carrying out preliminary filtration on domestic cleaning wastewater through a pretreatment device, and separating liquid and solid impurities in the domestic cleaning wastewater;
(2) Solid decomposition: decomposing organic matters of domestic fecal sewage and solid impurities through microorganisms, and filtering domestic wastewater and solid impurities through a grid plate;
(3) Waste water decomposition: decomposing the filtered wastewater in the step (2) by microorganisms to reduce the nitrogen and phosphorus content in the wastewater;
(4) And (3) secondary filtration: filtering and decomposing the wastewater in the step (1) and the step (3) for the second time through ceramic filter materials and the like;
(5) And (3) pollution discharge: and discharging the wastewater after secondary filtration into a sewage pipeline.
The method is further characterized in that: and (3) delivering the sludge generated by filtering in the step (3) into a sludge bin for collection and storage, and uniformly treating the sludge in the sludge bin in the later stage.
The utility model provides a preprocessing device, includes filtration module, filtration module fixedly connected with clearance module, filtration module includes the box, box top surface intercommunication has the feed liquor pipe, box side fixedly connected with fixed frame, fixed frame medial surface is located the fixedly connected with filter screen of box one side, fixed frame medial surface bottom sliding connection has the backup pad with clearance module fixed connection, fixed frame medial surface deviates from one side sliding connection of box has the baffle, baffle side top fixedly connected with U type frame, the equal fixedly connected with fixed block of two sides of U type frame, box side fixedly connected with and the supporting mechanism of U type frame contact, and supporting mechanism and fixed block contact, fixed frame side corresponds two fixed block fixedly connected with dog, can pour into the box with domestic cleaning waste water through the feed liquor pipe, and the baffle can block waste water, and the solid impurity in the waste water can precipitate the box bottom like this, after the waste water is full, can pass the baffle through supporting mechanism and slowly flow out the box through the top, and filter screen is difficult to filter the waste water filter screen is prevented to the filter screen is convenient for the waste water.
The method is further characterized in that: the supporting mechanism comprises two fixed shells, the side surfaces of the fixed shells are fixedly connected with the side surfaces of the box body, the opposite surfaces of the two fixed shells are in contact with the side surfaces of the U-shaped frame, the inner side surfaces of the fixed shells are in sliding connection with the adjacent fixed blocks, the top parts and the bottom parts of the inner side surfaces of the fixed shells are all rotationally connected with rotating blocks, two side surfaces of the rotating blocks are in transmission connection with a transmission belt, the top parts of one side surface of the transmission belt are fixedly connected with supporting blocks, the top surfaces of the supporting blocks positioned at the top parts of one side surface of the transmission belt are in contact with the bottom surfaces of the adjacent fixed blocks, two opposite surfaces of the fixed shells are rotationally connected with transmission rods, two ends of each transmission rod are fixedly connected with driving boxes, one side surface of each driving box is fixedly connected with a motor, one output end of each motor is in transmission connection with the adjacent rotating blocks, the two rotating blocks in the same fixed shell can keep synchronous rotation through the transmission belt, the rotating blocks in the two fixed shells can be synchronously rotated through the transmission belt, and the motor can drive the supporting blocks in the two fixed shells to rotate upwards through the transmission belt, so that the supporting blocks can be separated from the supporting blocks.
The method is further characterized in that: two one side fixedly connected with U template that the opposite face of fixed shell deviates from the box, the water drainage tank has been seted up to U template side bottom, U template medial surface corresponds the arc template of water drainage tank fixedly connected with and baffle bottom contact, and waste water can fall on the arc template after the U shaped frame, then pass water drainage tank and discharge, and U template and arc template can block waste water, avoid waste water to splash.
The method is further characterized in that: the utility model discloses a waste water treatment device, including box, baffle, fixed pipe, fixed frame, floating block, baffle, fixed frame top surface fixedly connected with, fixed pipe side fixedly connected with and backup pad top surface contact's fixed pipe, fixed pipe side sliding connection has the floating block, fixed intraductal being provided with of fixed pipe is acted as go-between, act as go-between one end from fixed pipe side bottom wear out and with floating block bottom surface fixed connection, and act as go-between the other end and pass fixed frame top, and act as go-between the other end and baffle top surface fixed connection, when discharging waste water, the floating block can float on the surface of water, like this after the baffle moves a section downwards, the floating block can pull the baffle through acting as go-between, and the baffle can follow waste water surface of water through the floating block and slowly descend to slowly discharge waste water, when avoiding discharging waste water, cause great disturbance to the solid impurity of box bottom, make impurity glue on the filter screen.
The method is further characterized in that: the cleaning module comprises a supporting shell, a supporting shell top side surface and a box body side surface bottom are fixedly connected, a power box is fixedly connected to the bottom surface in the supporting shell, a motor II is fixedly connected to the bottom surface in the power box, a connecting rod connected with the inner side surface of the power box in a transmission mode is connected, a sleeve rod is fixedly connected to the top of the inner side surface of the power box, a lifting screw rod is connected to the inner side surface of the sleeve rod in a rotating mode, a lifting rod connected with the lifting screw rod in a rotating mode is connected to the inner side surface of the sleeve rod in a sliding mode, a pressing plate connected with the lifting screw rod in a rotating mode is fixedly connected to the bottom surface of the pressing plate, a spring I is fixedly connected to the inner side surface of the sleeve rod, a bevel gear III is fixedly sleeved at the bottom end of the connecting rod, two bevel gears are in three-gear three-engagement transmission mode, the motor II can drive the connecting rod to rotate, and accordingly the lifting screw rod and the supporting plate can move downwards, threads on the lifting screw rod can be separated from the lifting screw rod in a rotating mode after the bottom of the lifting screw rod contacts with the pressing plate, the lifting screw rod can rotate upwards when the lifting screw rod is in a rotating mode, and the lifting screw rod can move downwards in a mode continuously in a rotating mode, and the lifting screw rod can move downwards when the lifting screw rod is in a rotating mode is in a mode.
The method is further characterized in that: the two inner side surfaces of the supporting shell are fixedly connected with a first baffle shell fixedly connected with the side surface of one connecting box, the two side surfaces of the connecting box, which deviate from the first baffle shell, are fixedly connected with a second baffle shell, cleaning rods are arranged on opposite surfaces of the connecting box, a plurality of cleaning hairs are fixedly connected with the side surfaces of the cleaning rods, rotating rods which are in contact with the inner side surfaces of the adjacent connecting boxes are fixedly connected with two ends of the cleaning rods, sliding blocks which are in rotating connection with the adjacent rotating rods are slidingly connected with the inner side surfaces of the connecting box, reciprocating screw rods which are in contact with the inner sides of the sliding blocks are rotatably connected with guide pieces which are in contact with spiral rails on the reciprocating screw rods, one end of the reciprocating screw rod in one connecting box is rotatably connected with the inner side surface of the first baffle shell, one end of the reciprocating screw rod is rotatably connected with the inner side surface of the second baffle shell, and two side surfaces of the reciprocating screw rod, which are positioned in the second baffle shell, are fixedly connected with one belt pulley wheel in a sleeved mode, and the two belt pulleys are in a transmission mode;
the power box inner side rotates and is connected with a round bar which is connected with the baffle shell in a rotating way, the round bar and the side face of the connecting rod are fixedly sleeved with a first transmission gear, the top of the power box is provided with a fixed bar which is fixedly connected with the bottom of the supporting plate corresponding to the first transmission gear, the inner side face of the fixed bar is slidably connected with a limiting bar, the bottom of the side face of the limiting bar is fixedly connected with a second transmission gear through a shaft rod in a rotating way corresponding to the first transmission gear, the top face of the limiting bar is fixedly connected with a second spring which is fixedly connected with the inner side face of the fixed bar, one end of the round bar is fixedly sleeved with a second belt pulley, the two belt pulleys are connected through belt transmission, the supporting plate can drive the fixed bar and the limiting bar to move downwards, so that the second transmission gear is meshed with the first transmission gear, the round bar can drive the second transmission gear to rotate through the second transmission gear, and the two reciprocating screw pulleys can keep synchronous rotation through the first belt pulleys, and when the reciprocating screw rotates, the sliding block can drive the sliding block to reciprocate along the surface of the supporting plate through the rotating bar, thereby cleaning the surface of the supporting plate.
The method is further characterized in that: the connecting box medial surface rotates and is connected with rectangular pole, and rectangular pole is located the one end fixedly connected with connecting box medial surface of sliding block and rotates the axis of rotation of being connected, axis of rotation and reciprocal lead screw side all are fixed to have cup jointed belt pulley three, and two belt pulleys three pass through belt drive connection, the rotating rod side is located the inside fixed bevel gear first that has cup jointed of connecting box, rectangular pole side sliding connection has with bevel gear first meshing driven bevel gear second, connecting box medial surface sliding connection has the screens seat of being connected with the rotating rod rotation, rectangular pole passes the screens seat, and screens seat medial surface is embedded to have a plurality of balls with bevel gear second contact, can make bevel gear first and bevel gear second keep meshing through the screens seat, and first can slide on rectangular pole, and reciprocal lead screw can drive axis of rotation and rectangular pole rotation through belt pulley three to rectangular pole can drive the rotating rod through bevel gear first and bevel gear second to make the clearance pole remove and rotate, be favorable to improving the clearance effect, and removal, pole removal and the rotation of backup pad all drive through motor second, and easy operation convenient to use.
The invention has the beneficial effects that:
1. the filter module of the pretreatment device can be used for injecting domestic cleaning wastewater into the box body, the baffle can be used for blocking the wastewater, so that the wastewater can be reserved in the box body for a period of time, solid impurities in the wastewater can be precipitated at the bottom of the box body, then the baffle can be lowered, the wastewater can slowly flow out of the box body through the filter screen, the filter screen is prevented from being directly washed by the wastewater, the solid impurities are not easy to block the filter screen, the filtering of the wastewater is facilitated, and when the wastewater is discharged, the wastewater can pass through the top of the baffle to be discharged out of the box body after passing through the filter screen, and as the floating block can float on the water surface, the floating block can pull the baffle through a stay wire, and the baffle can slowly descend along with the water surface of the wastewater, so that the wastewater is slowly discharged, and when the wastewater is discharged, the solid impurities at the bottom of the box body are prevented from being greatly disturbed, and the impurities are stuck on the filter screen;
2. the side surface of the limiting rod is rotationally connected with the second transmission gear, the second motor drives the lifting screw rod to rotate, the first transmission gear is meshed with the second transmission gear after the supporting plate is lowered, the first screw rod can be rotated, the cleaning rod is moved along the top surface of the supporting plate, solid impurities in the supporting plate are cleaned, the rectangular rod can be driven to rotate through the first bevel gear and the second bevel gear when the cleaning rod is moved, the cleaning effect is improved, the supporting plate is moved, the cleaning rod is moved and rotated only through the second motor, only one power source is needed, and the cleaning device is simple to operate and convenient to use.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic flow chart of a rural decentralized intelligent domestic sewage treatment method of the invention;
FIG. 2 is a schematic diagram of a pretreatment device according to the present invention;
FIG. 3 is a schematic diagram of a filtration module according to the present invention;
FIG. 4 is a schematic view of a structure of a fixing frame in the present invention;
FIG. 5 is a schematic view of the structure of the supporting mechanism in the present invention;
FIG. 6 is a schematic view of an arc plate structure in the present invention;
FIG. 7 is a schematic view showing the front construction of the inside of the fixing case in the present invention;
FIG. 8 is a schematic view showing the front construction of the inside of the stationary pipe according to the present invention;
FIG. 9 is a schematic view of a cleaning module according to the present invention;
FIG. 10 is a schematic view of the internal structure of the power pack of the present invention;
FIG. 11 is a schematic view of the internal front view of the loop bar of the present invention;
FIG. 12 is a schematic top view of the interior of the junction box of the present invention;
FIG. 13 is a schematic view of a positioning seat according to the present invention;
fig. 14 is a schematic view showing an internal front view of the shield of the present invention.
In the figure: 100. a filtration module; 110. a case; 111. a liquid inlet pipe; 120. a support plate; 130. a fixed tube; 131. a floating block; 140. a fixed frame; 141. a baffle; 142. a fixed block; 143. a U-shaped frame; 144. a stop block; 145. a roller seat; 150. a support mechanism; 151. a fixed case; 152. a U-shaped plate; 153. a drive box; 1531. a first motor; 154. a transmission belt; 155. a transmission rod; 156. a support block; 157. a rotating block; 158. an arc-shaped plate; 160. a pull wire; 200. a cleaning module; 210. a support case; 220. cleaning a rod; 221. a rotating lever; 222. bevel gears I; 230. a connection box; 231. a reciprocating screw rod; 232. a sliding block; 233. a rotating shaft; 234. a rectangular rod; 235. a clamping seat; 236. bevel gears II; 240. a power box; 241. a first baffle shell; 242. a second motor; 243. a first transmission gear; 244. a connecting rod; 245. a round bar; 250. a second baffle shell; 260. a loop bar; 261. an extrusion plate; 262. a lifting rod; 263. lifting the screw rod; 264. a first spring; 270. a fixed rod; 271. a transmission gear II; 272. a second spring; 273. and a limit rod.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-14, a rural decentralized intelligent domestic sewage treatment method comprises the steps of prefiltering, solid decomposition, wastewater decomposition, secondary filtration and sewage discharge, and the specific steps are as follows;
(1) Pretreatment: the method comprises the steps of (1) carrying out preliminary filtration on domestic cleaning wastewater through a pretreatment device, and separating liquid and solid impurities in the domestic cleaning wastewater;
(2) Solid decomposition: decomposing organic matters of domestic fecal sewage and solid impurities through microorganisms, and filtering domestic wastewater and solid impurities through a grid plate;
(3) Waste water decomposition: decomposing the filtered wastewater in the step (2) by microorganisms to reduce the nitrogen and phosphorus content in the wastewater;
(4) And (3) secondary filtration: filtering and decomposing the wastewater in the step (1) and the step (3) for the second time through ceramic filter materials and the like;
(5) And (3) pollution discharge: and discharging the wastewater after secondary filtration into a sewage pipeline.
And (3) delivering the sludge generated by filtering in the step (3) into a sludge bin for collection and storage, and uniformly treating the sludge in the sludge bin in the later stage.
The utility model provides a preprocessing device, including filter module 100, filter module 100 fixedly connected with clearance module 200, filter module 100 includes box 110, box 110 top surface intercommunication has feed liquor pipe 111, box 110 side fixedly connected with fixed frame 140, fixed frame 140 medial surface is located the fixedly connected with filter screen of box 110 one side, fixed frame 140 medial surface bottom sliding connection has the backup pad 120 with clearance module 200 fixedly connected, one side sliding connection who deviates from box 110 in fixed frame 140 medial surface has baffle 141, baffle 141 side top fixedly connected with U-shaped frame 143, the equal fixedly connected with fixed block 142 of two sides of U-shaped frame 143, box 110 side fixedly connected with and the supporting mechanism 150 of U-shaped frame 143 contact, and supporting mechanism 150 contacts with fixed block 142, fixed frame 140 side corresponds two fixed blocks 142 fixedly connected with two dogs 144, can pour into box 110 with life washing waste water through feed liquor pipe 111, baffle 141 can block waste water, the solid impurity in the waste water can deposit to box 110 bottom like this, can be through supporting mechanism 150 and fall after keeping up, baffle 141 can pass filter screen top filter screen that can not be directly washed out easily.
The supporting mechanism 150 comprises two fixed shells 151, the side surfaces of the fixed shells 151 are fixedly connected with the side surfaces of the box body 110, the opposite surfaces of the two fixed shells 151 are in side contact with the side surfaces of the U-shaped frames 143, the inner side surface of the fixed shells 151 is in sliding connection with the adjacent fixed blocks 142, the top and the bottom of the inner side surface of the fixed shells 151 are respectively and rotatably connected with a rotating block 157, the side surfaces of the two rotating blocks 157 are in transmission connection with a transmission belt 154, the top surface of the supporting block 156 positioned at the top of one side surface of the transmission belt 154 is fixedly connected with a supporting block 156, the top surface of the supporting block 156 is in contact with the bottom surface of the adjacent fixed block 142, the bottom of the opposite surfaces of the two fixed shells 151 is rotatably connected with a transmission rod 155, two ends of the transmission rod 155 are respectively and fixedly connected with the side surfaces of the adjacent rotating blocks 157, the inner side surface of the driving box 153 is fixedly connected with a motor 1531, the output end of the motor 1531 is in transmission connection with the adjacent rotating blocks 157, the two rotating blocks 157 in the same fixed shell 151 can synchronously rotate through the transmission belt 154, and the two rotating blocks 157 can synchronously rotate through the transmission rod 154, and the two rotating blocks 157 can synchronously rotate upward through the transmission belt 155, so that the motor 157 can be separated from the supporting blocks 156 and can synchronously rotate with the supporting blocks 156 through the rotating blocks 151. One side of the opposite surfaces of the two fixing shells 151, which is away from the box body 110, is fixedly connected with a U-shaped plate 152, the bottom of the side surface of the U-shaped plate 152 is provided with a drainage groove, the inner side surface of the U-shaped plate 152 is fixedly connected with an arc-shaped plate 158 contacted with the bottom of the baffle 141, waste water can fall onto the arc-shaped plate 158 after passing through the U-shaped frame 143, then is discharged through the drainage groove, and the U-shaped plate 152 and the arc-shaped plate 158 can block the waste water to avoid splashing of the waste water.
The inside face fixedly connected with of box 110 and fixed pipe 130 of backup pad 120 top surface contact, fixed pipe 130 side sliding connection has floating block 131, fixed pipe 130 is inside to be provided with and to draw line 160, draw line 160 one end is worn out from fixed pipe 130 side bottom and with floating block 131 bottom surface fixed connection, and draw line 160 other end is worn out from fixed pipe 130 top, fixed frame 140 top surface fixedly connected with gyro wheel seat 145, draw line 160 other end walks around gyro wheel seat 145 top and passes fixed frame 140 top, and draw line 160 other end and baffle 141 top surface fixed connection, when discharging waste water, floating block 131 can float on the surface of water, so after baffle 141 moves a section distance downwards, floating block 131 can pull baffle 141 through drawing line 160, baffle 141 can slowly descend the waste water through floating block 131 to slowly discharge waste water, when avoiding discharging waste water, cause great disturbance to the solid impurity of box 110 bottom, make the impurity glue on the filter screen.
The cleaning module 200 comprises a supporting shell 210, the top side surface of the supporting shell 210 is fixedly connected with the bottom of the side surface of the box 110, the bottom surface of the supporting shell 210 is fixedly connected with a power box 240, the inner bottom surface of the power box 240 is fixedly connected with a motor II 242, the output end of the motor II 242 is in transmission connection with a connecting rod 244 which is rotationally connected with the inner side surface of the power box 240, the top of the inner side surface of the power box 240 is fixedly connected with a sleeve rod 260, the inner side surface of the sleeve rod 260 is rotationally connected with a lifting rod 262 which is rotationally connected with the lifting rod 263, the top end of the lifting rod 262 is fixedly connected with the bottom surface of the supporting plate 120, the inner side surface of the sleeve rod 260 is slidingly connected with a pressing plate 261 which is rotationally connected with the lifting rod 263, the bottom surface of the pressing plate 261 is fixedly connected with a spring I264 which is fixedly connected with the inner side surface of the sleeve rod 260, the side surface of the connecting rod 244 is fixedly sleeved with a bevel gear III, and the two bevel gears are in transmission, the motor II can drive the connecting rod 244 to rotate, the connecting rod 244 can drive the lifting rod 263 to rotate through the bevel gears to enable the lifting rod 263 to move downwards, the lifting rod 262 and the supporting plate 120 to slide, the lifting rod 262 is in a sliding way, the lifting rod 262 is in contact with the bottom of the pressing plate 263, and the lifting rod 262 is continuously rotated upwards, and the lifting rod 262 is in a sliding way, and can be kept in a sliding contact with the lifting rod 263, and is in a sliding way, and is in a lifting rod and a lifting rod is in a lifting mode.
The two inner sides of the supporting shell 210 are fixedly connected with a first connection box 230, the side of the power box 240 is fixedly connected with a first baffle shell 241 fixedly connected with the side of one connection box 230, the side of the two connection boxes 230, which is away from the first baffle shell 241, is fixedly connected with a second baffle shell 250, the opposite sides of the two connection boxes 230 are provided with cleaning rods 220, the side of each cleaning rod 220 is fixedly connected with a plurality of cleaning hairs, both ends of each cleaning rod 220 are fixedly connected with a rotating rod 221 which is contacted with the inner side of the adjacent connection box 230, the inner side of each connection box 230 is slidingly connected with a sliding block 232 which is rotationally connected with the adjacent rotating rod 221, the inner side of each connection box 230 is rotationally connected with a reciprocating screw 231 which is contacted with a spiral rail on the sliding block 232, one end of the reciprocating screw 231 in one connection box 230 is rotationally connected with the inner side of the first baffle shell 241, the other end of the reciprocating screw 231 is rotationally connected with the inner side of the second baffle shell 250, the sides of the two reciprocating screws 231, which are positioned in the second baffle shell 250, are fixedly sleeved with one pulley, and the two pulleys are rotationally connected through a belt;
the inner side surface of the power box 240 is rotationally connected with a round rod 245 which is rotationally connected with a first baffle shell 241, the round rod 245 and the side surface of a connecting rod 244 are fixedly sleeved with a first transmission gear 243, the top of the power box 240 is provided with a fixed rod 270 which is fixedly connected with the bottom surface of a supporting plate 120 corresponding to the first transmission gear 243, the inner side surface of the fixed rod 270 is slidingly connected with a limiting rod 273, the bottom of the side surface of the limiting rod 273 is rotationally connected with a second transmission gear 271 corresponding to the first transmission gear 243 through a shaft rod, the top surface of the limiting rod 273 is fixedly connected with a second spring 272 which is fixedly connected with the inner side surface of the fixed rod 270, one end of the round rod 245 is fixedly sleeved with a second belt pulley 231, the two belt pulleys are in transmission connection, the supporting plate 120 can drive the fixed rod 270 and the limiting rod 273 to move downwards through a belt, the second transmission gear 271 can be meshed with the first transmission gear 243, the connecting rod 244 can drive the round rod 245 to rotate through the first transmission gear 243 and the second transmission gear 271, the round rod 245 can drive the second reciprocating screw 231 to rotate synchronously through the belt pulley 231, and when the two reciprocating screw 231 rotates through the belt pulley 231, the cleaning rod 232 can drive the cleaning rod 220 to move along the supporting plate 120 through the reciprocating screw rod 220 to clean the surface 120.
The inner side surface of the connecting box 230 is rotationally connected with a rectangular rod 234, one end of the rectangular rod 234, which is positioned at the sliding block 232, is fixedly connected with a rotating shaft 233 rotationally connected with the inner side surface of the connecting box 230, the rotating shaft 233 and the side surface of the reciprocating screw 231 are fixedly sleeved with belt pulleys III, the two belt pulleys III are in transmission connection through belts, the side surface of the rotating rod 221 is positioned inside the connecting box 230 and fixedly sleeved with a bevel gear I222, the side surface of the rectangular rod 234 is slidingly connected with a bevel gear II 236 in transmission with the bevel gear I222, the inner side surface of the connecting box 230 is slidingly connected with a clamping seat 235 rotationally connected with the rotating rod 221, the rectangular rod 234 passes through the clamping seat 235, a plurality of balls in contact with the bevel gear II 236 are embedded in the inner side surface of the clamping seat 235, the bevel gear I222 can be meshed with the bevel gear II 236 through the clamping seat 235, the bevel gear I222 can slide on the rectangular rod 234, the reciprocating screw 231 can drive the rotating shaft 233 and the rectangular rod 234 through the belt pulleys III, the rectangular rod 234 can drive the bevel gear II 222 to rotate through the first 222 and the bevel gear II 236, thereby the cleaning rod 220 moves and rotates, the cleaning rod 220 is beneficial to improving the cleaning effect, and the movement of the supporting plate 120 is easy to drive the bevel gear II through the second driving rod and the driving rod.
Working principle: when the device is used, washing wastewater is injected into the box body 110 through the liquid inlet pipe 111, after the washing wastewater is injected into the box body 110, the floating blocks 131 float on the surface of the wastewater, so that the floating blocks 131 can move upwards along with the surface of the wastewater, after more wastewater is injected, the floating blocks 131 can pull out part of the stay wire 160 in the fixed pipe 130, after the wastewater is kept for a period of time, the motor one 1531 can drive the rotating blocks 157 at the top to rotate, the two rotating blocks 157 in the same fixed shell 151 can keep synchronous rotation through the transmission belt 154, one rotating block 157 at the bottom can drive the other rotating block 157 at the bottom to rotate through the transmission rod 155, the rotating blocks 157 can drive the supporting blocks 156 at the top to rotate upwards through the transmission belt 154, after the supporting blocks 156 rotate upwards and are separated from the supporting blocks 156, the baffle plate one 1531 is stopped, the baffle 141 can move downwards for a certain distance, the height of the top of the baffle plate 141 is lower than the height of the floating blocks 131, and the height of the stay wire 141 can pass through the baffle plate 141 and can fall down to the top of the baffle plate 141 through the filter screen 141, and can slowly pass through the baffle plate 141 after the stay wire 131 falls down to the top of the baffle plate 141, and the baffle plate 141 can be pulled down through the top of the baffle plate 141, and the top of the baffle plate 141 can be discharged through the filter screen 141, and the top of the baffle plate 141 can be slowly falls down through the baffle plate 141 when the top is discharged through the baffle plate 141 is discharged;
after the top of the baffle plate 141 moves downwards to the position of the supporting plate 120, the bottom surface of the fixed block 142 can be contacted with the top of the baffle plate 144, so that the baffle plate 144 supports the supporting plate 120 through the fixed block 142, at this time, the waste water at the bottom of the box body 110 can pass through the filter screen to be discharged, after the waste water is completely discharged, the motor one 1531 can be started, the motor one 1531 can continuously drive the driving belt 154 to rotate through the rotating block 157, the driving belt 154 can rotate to the position of the fixed block 142, the top surface of the bottom supporting block 156 is contacted with the bottom surface of the fixed block 142, at this time, the driving belt 154 can drive the supporting block 156 to move upwards, so that the fixed block 142 is moved upwards through the supporting block 156, the baffle plate 141 is driven to move upwards, the baffle plate 141 can be blocked again after the baffle plate 141 is moved to the original position, at this time, the waste water can be continuously injected into the box body 110 for the next filtration;
after a certain amount of solid impurities are accumulated in the box body 110, the waste water in the box body 110 is completely discharged, then the motor II 242 can be started, the motor II 242 can drive the connecting rod 244 to rotate, the connecting rod 244 can drive the lifting screw 263 through the bevel gear III, so that the lifting rod 262 drives the supporting plate 120 to move downwards, the supporting plate 120 can drive the fixing rod 270, the transmission gear II 271 and the limiting rod 273 to move downwards, the bottom of the fixing rod 270 passes through the top of the power box 240 to move into the power box 240, after the top surface of the supporting plate 120 moves to the bottom of the cleaning rod 220, the bottom of the lifting screw 263 can be contacted with the extrusion plate 261, and the threads on the lifting screw 263 can be separated from the lifting rod 262, so that when the lifting screw 263 continues to rotate, the lifting rod 262 and the supporting plate 120 can not continue to move downwards, meanwhile, the second transmission gear 271 is meshed with the first transmission gears 243, so that the connecting rod 244 can drive the round rod 245 to rotate through the first transmission gear 243 and the second transmission gear 271, the round rod 245 can drive the reciprocating screw rod 231 to rotate through the second belt pulley, the two reciprocating screw rods 231 can keep synchronous rotation through the first belt pulley, the reciprocating screw rods 231 can drive the rotating shafts 233 to rotate through the third belt pulley, when the reciprocating screw rods 231 rotate, under the action of the spiral tracks and the guide sheets on the reciprocating screw rods 231, the sliding blocks 232 can drive the cleaning rods 220 to reciprocate along the surface of the supporting plate 120 through the rotating rods 221, the rotating shafts 233 can drive the rectangular rods 234 to rotate, and the rectangular rods 234 can drive the rotating rods 221 to rotate through the first bevel gears 222 and the second bevel gears 236, so that the cleaning rods 220 can move and rotate;
after the cleaning rod 220 moves to the original position, the connecting rod 244 is reversely rotated by the motor II 242 to reversely rotate the lifting screw rod 263, and the threads on the lifting screw rod 263 are kept in contact with the threads inside the lifting rod 262 under the action of the spring I264, so that when the lifting screw rod 263 reversely rotates, the lifting screw rod 263 and the lifting rod 262 can be rotated again, the lifting rod 262 can drive the supporting plate 120 to move upwards to the original position, the supporting plate 120 can drive the transmission gear II 271 to move upwards, the transmission gear I243 is separated from the transmission gear II 271, the cleaning rod 220 stops moving and rotating, and then the filtering of the waste water can be continued.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the invention, as various modifications and additions may be made to the particular embodiments described, or in a similar manner, by those skilled in the art, without departing from the scope of the invention or exceeding the scope of the invention as defined in the claims.
Claims (5)
1. A rural decentralized domestic sewage treatment method is characterized by comprising the treatment steps of prefiltering, solid decomposition, wastewater decomposition, secondary filtering and sewage discharge, and specifically comprises the following steps of;
pretreatment: the method comprises the steps of (1) carrying out preliminary filtration on domestic cleaning wastewater through a pretreatment device, and separating liquid and solid impurities in the domestic cleaning wastewater;
the pretreatment device comprises a filtration module (100), the filtration module (100) is fixedly connected with a cleaning module (200), the filtration module (100) comprises a box body (110), a liquid inlet pipe (111) is communicated with the top surface of the box body (110), a fixed frame (140) is fixedly connected with the side surface of the box body (110), a filter screen is fixedly connected with the inner side surface of the fixed frame (140) on one side of the box body (110), a supporting plate (120) fixedly connected with the cleaning module (200) is slidingly connected with the bottom of the inner side surface of the fixed frame (140), a baffle (141) is slidingly connected with one side of the inner side surface of the fixed frame (140) deviating from the box body (110), a U-shaped frame (143) is fixedly connected with two fixed blocks (142) on the side surfaces of the baffle (141), a supporting mechanism (150) contacted with the U-shaped frame (143) is fixedly connected with one side surface of the box body (110), and the supporting mechanism (150) is contacted with the fixed blocks (142), and two stop blocks (144) are fixedly connected with corresponding to the two fixed blocks (144) on the side surfaces of the fixed frame (140).
The supporting mechanism (150) comprises two fixed shells (151), the side surfaces of the fixed shells (151) are fixedly connected with the side surfaces of the box body (110), the opposite surfaces of the two fixed shells (151) are in contact with the side surfaces of the U-shaped frames (143), the inner side surfaces of the fixed shells (151) are in sliding connection with the adjacent fixed blocks (142), the top and the bottom of the inner side surfaces of the fixed shells (151) are respectively and rotatably connected with a rotating block (157), the side surfaces of the two rotating blocks (157) are in transmission connection with a transmission belt (154), the top of one side surface of the transmission belt (154) is fixedly connected with a supporting block (156) with the bottom of the other side surface, the top surface of the supporting block (156) positioned at the top of the transmission belt (154) is in contact with the bottom of the adjacent fixed block (142), the bottom of the opposite surfaces of the two fixed shells (151) is rotatably connected with a transmission rod (155), two ends of the transmission rod (155) are respectively and fixedly connected with the side surfaces of the adjacent rotating blocks (157), the top of the side surfaces of one fixed shell (151) is fixedly connected with a driving box (153), the inner side surface (153) is far away from the transmission rod (155), and the motor (153) is fixedly connected with the output end (1531);
one side, away from the box body (110), of the opposite faces of the two fixing shells (151) is fixedly connected with a U-shaped plate (152), a drainage groove is formed in the bottom of the side face of the U-shaped plate (152), and an arc-shaped plate (158) in contact with the bottom of the baffle plate (141) is fixedly connected with the inner side face of the U-shaped plate (152) corresponding to the drainage groove;
the cleaning module (200) comprises a supporting shell (210), the top side surface of the supporting shell (210) is fixedly connected with the bottom of the side surface of the box body (110), the inner bottom surface of the supporting shell (210) is fixedly connected with a power box (240), the inner bottom surface of the power box (240) is fixedly connected with a motor II (242), the output end of the motor II (242) is in transmission connection with a connecting rod (244) which is rotationally connected with the inner side surface of the power box (240), the top of the inner side surface of the power box (240) is fixedly connected with a sleeve rod (260), the inner side surface of the sleeve rod (260) is rotationally connected with a lifting screw rod (263), the inner side surface of the sleeve rod (260) is slidingly connected with a lifting rod (262) which is rotationally connected with the lifting screw rod (263), the inner side surface of the pressing plate (261) is fixedly connected with a spring I (264) which is rotationally connected with the inner side surface of the sleeve rod (240), and the side surface of the connecting rod (240) is rotationally connected with two bevel gears (263) and three bevel gears (263) are fixedly meshed with three bevel gears;
(2) Solid decomposition: decomposing organic matters of domestic fecal sewage and solid impurities through microorganisms, and filtering domestic wastewater and solid impurities through a grid plate;
(3) Waste water decomposition: decomposing the filtered wastewater in the step (2) by microorganisms to reduce the nitrogen and phosphorus content in the wastewater;
(4) And (3) secondary filtration: filtering the wastewater after filtering and decomposing in the step (1) and the step (3) for the second time through a ceramsite filter material;
(5) And (3) pollution discharge: and discharging the wastewater after secondary filtration into a sewage pipeline.
2. The rural decentralized domestic sewage treatment method according to claim 1, wherein the sludge generated by filtering in the step (3) is sent to a sludge bin for collection and storage, and the sludge in the sludge bin is treated uniformly in the later period.
3. The rural decentralized domestic sewage treatment method according to claim 1, wherein the inner side surface of the tank body (110) is fixedly connected with a fixed pipe (130) which is in contact with the top surface of the supporting plate (120), the side surface of the fixed pipe (130) is slidably connected with a floating block (131), a stay wire (160) is arranged inside the fixed pipe (130), one end of the stay wire (160) penetrates out from the bottom of the side surface of the fixed pipe (130) and is fixedly connected with the bottom surface of the floating block (131), the other end of the stay wire (160) penetrates out from the top of the fixed pipe (130), the top surface of the fixed frame (140) is fixedly connected with a roller seat (145), the other end of the stay wire (160) bypasses the top of the roller seat (145) and penetrates through the top of the fixed frame (140), and the other end of the stay wire (160) is fixedly connected with the top surface of the baffle (141).
4. The rural decentralized domestic sewage treatment method according to claim 1, wherein the two inner sides of the supporting case (210) are fixedly connected with a connecting case (230), the side of the power case (240) is fixedly connected with a first baffle case (241) which is fixedly connected with the side of one connecting case (230), the side of the two connecting cases (230) which is away from the first baffle case (241) is fixedly connected with a second baffle case (250), the opposite sides of the two connecting cases (230) are provided with cleaning bars (220), the side of the cleaning bars (220) is fixedly connected with a plurality of cleaning hairs, both ends of the cleaning bars (220) are fixedly connected with rotating bars (221) which are contacted with the inner sides of the adjacent connecting cases (230), the inner sides of the connecting cases (230) are slidingly connected with sliding blocks (232) which are rotationally connected with reciprocating screws (231) which are contacted with the inner sides of the sliding blocks (232), the inner sides of the sliding blocks (232) are rotationally connected with reciprocating screws (231) which are rotationally connected with the inner sides of the reciprocating guide rails (231), the inner sides of the reciprocating screws (231) are rotationally connected with the inner sides of the reciprocating guide rails (231), the two reciprocating screw rods (231) are fixedly sleeved on the side surfaces of the second baffle shell (250), and the first belt pulleys are connected through belt transmission;
the power box (240) medial surface rotates and is connected with round bar (245) that rotates with fender shell one (241) and be connected, round bar (245) all has fixedly cup jointed transmission gear one (243) with connecting rod (244) side, power box (240) top corresponds transmission gear one (243) and is provided with dead lever (270) with backup pad (120) bottom surface fixed connection, dead lever (270) medial surface sliding connection has gag lever post (273), gag lever post (273) side bottom corresponds transmission gear one (243) and is connected with transmission gear two (271) through the axostylus axostyle rotation, gag lever post (273) top surface fixedly connected with and dead lever (270) medial surface fixed connection's spring two (272), round bar (245) one end has all fixedly cup jointed belt pulley two with one reciprocating screw (231) one end, and two belt pulleys two are connected through the belt drive.
5. The rural decentralized domestic sewage treatment method according to claim 4, wherein the inner side surface of the connecting box (230) is rotatably connected with a rectangular rod (234), one end of the rectangular rod (234) located at the sliding block (232) is fixedly connected with a rotating shaft (233) rotatably connected with the inner side surface of the connecting box (230), the rotating shaft (233) and the side surface of the reciprocating screw (231) are fixedly sleeved with a belt pulley III, the two belt pulleys III are connected through a belt transmission, the side surface of the rotating rod (221) is located inside the connecting box (230) and fixedly sleeved with a bevel gear I (222), the side surface of the rectangular rod (234) is slidably connected with a bevel gear II (236) in meshed transmission with the bevel gear I (222), the inner side surface of the connecting box (230) is slidably connected with a clamping seat (235) rotatably connected with the rotating rod (221), the rectangular rod (234) penetrates through the clamping seat (235), and the inner side surface of the clamping seat (235) is embedded with a plurality of balls in contact with the bevel gear II (236).
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| CN112044171A (en) * | 2020-09-07 | 2020-12-08 | 吕玲 | Graded filtering sewage treatment device |
| US10967314B2 (en) * | 2019-08-26 | 2021-04-06 | Zhijun Wang | Water floating object treatment device for sewage treatment |
| CN113277644A (en) * | 2021-05-29 | 2021-08-20 | 孙萍 | Domestic sewage treatment equipment and working method thereof |
| CN114588684A (en) * | 2022-03-11 | 2022-06-07 | 宏伟建设工程股份有限公司 | Municipal works are with sanitary wastewater treatment device |
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- 2022-08-05 CN CN202210939056.8A patent/CN115432883B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10967314B2 (en) * | 2019-08-26 | 2021-04-06 | Zhijun Wang | Water floating object treatment device for sewage treatment |
| CN112044171A (en) * | 2020-09-07 | 2020-12-08 | 吕玲 | Graded filtering sewage treatment device |
| CN113277644A (en) * | 2021-05-29 | 2021-08-20 | 孙萍 | Domestic sewage treatment equipment and working method thereof |
| CN114588684A (en) * | 2022-03-11 | 2022-06-07 | 宏伟建设工程股份有限公司 | Municipal works are with sanitary wastewater treatment device |
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