CN111437636A - SS multilayer mixed flow precipitation device and precipitation method thereof - Google Patents

SS multilayer mixed flow precipitation device and precipitation method thereof Download PDF

Info

Publication number
CN111437636A
CN111437636A CN202010272131.0A CN202010272131A CN111437636A CN 111437636 A CN111437636 A CN 111437636A CN 202010272131 A CN202010272131 A CN 202010272131A CN 111437636 A CN111437636 A CN 111437636A
Authority
CN
China
Prior art keywords
water
valve
wastewater
precipitation
purification
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010272131.0A
Other languages
Chinese (zh)
Inventor
邓小辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hangzhou Dinghui Environmental Protection Technology Co ltd
Original Assignee
Hangzhou Dinghui Environmental Protection Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hangzhou Dinghui Environmental Protection Technology Co ltd filed Critical Hangzhou Dinghui Environmental Protection Technology Co ltd
Priority to CN202010272131.0A priority Critical patent/CN111437636A/en
Publication of CN111437636A publication Critical patent/CN111437636A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042Baffles or guide plates
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039Settling tanks provided with contact surfaces, e.g. baffles, particles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D21/00Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24Feed or discharge mechanisms for settling tanks
    • B01D21/245Discharge mechanisms for the sediments
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
    • B01D24/10Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
    • B01D24/16Upward filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D24/00Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46Regenerating the filtering material in the filter
    • B01D24/4631Counter-current flushing, e.g. by air
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D36/00Filter circuits or combinations of filters with other separating devices
    • B01D36/04Combinations of filters with settling tanks

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention discloses a SS multilayer mixed flow precipitation device and a precipitation method thereof. The problem of water resource shortage is more serious due to rapid development of the social industry, and the waste water recycling treatment project has great significance for recycling water resources, so that the pressure of industrial water can be effectively relieved. The invention relates to a SS multilayer mixed flow precipitation device which comprises a water inlet module, a high-efficiency precipitation module and a backwashing module. The water inlet module comprises a wastewater collecting tank, a sewage lifting pump and a first on-off valve; the high-efficiency precipitation module comprises a precipitation device main body, a wastewater inlet central pipe, a water blocking weir plate, a plurality of layers of water purification inclined plates, a variable-speed mixing area, a fine grid net, filter sand, a second on-off valve and a pneumatic diaphragm pump; the backwashing module comprises an aeration fan and a porous aeration pipe. The invention integrates the process characteristics of the inclined tube and the vertical flow sedimentation tank, effectively improves the treatment capacity and treatment effect of the high SS wastewater, and has obvious sedimentation advantages compared with the prior art.

Description

SS multilayer mixed flow precipitation device and precipitation method thereof
Technical Field
The invention belongs to the technical field of environment-friendly equipment, and particularly relates to a SS (suspended matter wastewater) multilayer mixed flow precipitation device and a precipitation method thereof.
Background
Nowadays, water resources in China face various problems such as water pollution, water resource shortage and the like, the water pollution aggravates the current situation of water resource shortage, and the physical and mental health of people is harmed. One of the main pollution threats to the main water areas in China is the problem of high suspended matters, and meanwhile, other characteristic pollution influences are wide, and the water area treatment difficulty is high. With the continuous explosion of social water quality safety events, the situation of water resource protection in China is not slow.
In the high SS wastewater treatment, coagulation-precipitation-filtration is the most common water purification process for treating suspended particles in water, and the treatment effect of a precipitation filtration unit has direct influence on the running condition, the treatment cost and the like of the subsequent process. At present, the common treatment equipment for SS in water mainly comprises a horizontal flow sedimentation tank, an inclined tube sedimentation tank and a vertical flow sedimentation tank. The horizontal flow type sedimentation tank has simple structure and convenient operation, but is difficult to treat the wastewater with high SS concentration, and has poor water outlet effect; the inclined tube type sedimentation tank divides the wastewater into a plurality of flow stabilizing units by utilizing a laminar flow principle, shortens the sedimentation distance of suspended matters, improves the sewage treatment efficiency, and ensures stable effluent quality, but for the wastewater with higher SS concentration, a large amount of sludge deposited on the inner wall of an inclined tube easily causes the collapse of inclined tube packing, so the equipment maintenance difficulty and the cost are increased; the vertical sedimentation tank has the advantages of good sedimentation effect, small floor area, convenient sludge discharge and simple management, but has the problems of difficult construction, high manufacturing cost and the like because the tank body has depth requirements, and the vertical sedimentation tank has poor adaptability to water quantity impact and water temperature change. Therefore, the SS multilayer mixed flow precipitation device is developed by combining the advantages and the disadvantages of various existing precipitation processes, so that the removal effect of the high-SS wastewater is improved, the effluent quality is ensured, and the significance is great.
Disclosure of Invention
The invention aims to provide an SS multilayer mixed flow precipitation device and a precipitation method thereof.
The invention relates to a SS multilayer mixed flow precipitation device which comprises a water inlet module and an efficient precipitation module. The water inlet module comprises a wastewater collecting tank and a sewage lifting pump. The sewage lift pump is arranged at the bottom of the inner cavity of the wastewater collecting tank. The high-efficiency precipitation module comprises a precipitation tank, a central water inlet pipe, a water blocking weir plate, a plurality of layers of water purification inclined plates, a fine grid and an unpowered sand filtration purification area. The upper portion of settling cask is cylindricly, and the lower part is hourglass hopper-shaped. One or more overflow ports are arranged on the side part of the top of the inner cavity of the settling tank; the bottom of the inner cavity of the settling tank is provided with a sludge discharge port. The central water inlet pipe of vertical setting sets up in the central point on gunbarrel upper portion and puts. The water retaining weir plate is fixed in the middle of the settling tank and is positioned right below the water outlet of the central water inlet pipe; the top of the water-retaining weir plate is provided with an inclined water-dividing surface. The water inlet of the central water inlet pipe is connected with the sewage lift pump through a first on-off valve. The water purification sloping plate is annular. The multilayer water purification inclined plates are sleeved on the central water inlet pipe and are sequentially arranged at intervals along the vertical direction. A plurality of inclined flow passages are arranged in the water purifying inclined plate. A variable speed mixing area is formed in a gap between any two adjacent layers of water purification inclined plates; the fine grid net is laid on the top of the inner cavity of the settling tank. An unpowered sand filtration purification area is laid above the fine grid.
Preferably, the SS multi-layer mixed flow sedimentation device further comprises a backwashing module. The backwashing module comprises an aeration fan and a porous aeration pipe; the porous aeration pipe is arranged between the topmost water purification inclined plate and the fine grid. The air inlet of the porous aeration pipe is connected with the air outlet of the aeration fan.
Preferably, the high-efficiency precipitation module further comprises a second cut-off valve and a pneumatic diaphragm pump. And a sludge discharge port of the settling tank is connected with an input port of the pneumatic diaphragm pump through a second cut-off valve.
Preferably, the unpowered sand filtration purification area consists of two layers of filter sand; the two layers of filter sand are separated by a separation net. The grain size of the filter sand positioned on the upper layer is smaller than that of the filter sand positioned on the lower layer.
Preferably, the output port of the pneumatic diaphragm pump is connected with a sludge discharge device.
Preferably, the included angle between the inclined flow channel in the water purification inclined plate and the horizontal plane is 60 degrees; the inclined flow channels in the two adjacent layers of water purification inclined plates have opposite inclined directions; the distance between two adjacent layers of water purification sloping plates is 0.2 m.
The precipitation method of the SS multilayer mixed flow precipitation device comprises the following specific steps:
step one, a sewage lifting pump is started, a pneumatic diaphragm pump is closed, a first on-off valve is conducted, a second on-off valve is closed, an aeration fan is closed, wastewater in a wastewater collecting tank is injected into a settling tank from top to bottom through a central water inlet pipe, and a water blocking weir plate uniformly disperses the input wastewater and reduces the flow rate.
Step two, the suspended particles with the density larger than that of water can sink to a sludge discharge port under the action of gravity; suspended particles with density smaller than that of water rise in the settling tank along with water flow under the action of buoyancy and sequentially pass through each layer of water purification inclined plate and each variable speed mixing zone from bottom to top. The water purification inclined plate divides the upward flowing wastewater into a plurality of inclined steady flow areas, and the fine suspended particles are gradually condensed and enlarged under the action of the water purification inclined plate to form suspended particle clusters; the suspended particle mass gradually descends under the action of gravity. In addition, each variable speed mixing zone causes the wastewater flow rate to again decrease; suspended particles in the wastewater flowing upwards from the water purification sloping plate of the next layer and suspended particle groups which are condensed and enlarged in the water purification sloping plate of the previous layer and then sink are converged in the variable speed mixing area, and are collided and extruded with each other to form larger suspended particles to sink in an accelerating manner. The wastewater which flows upwards out of the topmost water purification inclined plate is filtered by the unpowered sand filtration purification area and then discharged from the overflow port.
And step three, after the preset time for operating sludge discharge or the preset amount of sludge in the settling tank is reached, starting the pneumatic diaphragm pump, and switching on the second on-off valve to discharge the sludge in the settling tank. After the sludge is discharged, the pneumatic diaphragm pump is closed, the second stop valve is stopped, and the water enters a normal water production state.
Step four, after running backwashing for a preset time, closing the sewage lifting pump, closing the first on-off valve, stopping water inflow, starting the aeration fan, starting aeration by using the porous aeration pipe, and cleaning the unpowered sand filtration and purification area through bubble disturbance to enable filtering pollutants in the unpowered sand filtration and purification area to sink; after continuously aerating for 5 minutes, the pneumatic diaphragm pump is started, the second on-off valve is switched on, the muddy water at the bottom of the sedimentation tank is gradually discharged, when the liquid level in the sedimentation tank is lower than the porous aeration pipe, the aeration fan is closed, the porous aeration pipe stops aerating, the second on-off valve is switched off, the pneumatic diaphragm pump is closed, the mud discharge is stopped, the backwashing of the filter sand is finished, the sewage lifting pump is restarted, and the first on-off valve is switched on.
The invention has the beneficial effects that:
1. the invention integrates the performance characteristics of the inclined tube sedimentation tank and the vertical flow sedimentation tank, integrates the advantages of the inclined tube sedimentation tank and the vertical flow sedimentation tank into a whole, greatly enhances the treatment capability of the equipment on SS in wastewater, and has obvious advantages in the prior art. And the application is provided with a plurality of layers of water purifying sloping plates. The variable-speed mixing area formed between two adjacent water purification inclined plates can reduce the flow speed of the waste water again; and the waste water that next floor water purification swash plate upflow gathers sunken suspension granule group behind the grow in the water purification swash plate of last floor and joins in the variable speed mixing area in the centre, has increased the disturbance and has made the further increase of suspension granule group to can make the suspended solid more rapidly, stable sinking.
2. The number of the water purification inclined plates in the sedimentation device provided by the invention can be correspondingly increased or decreased according to actual conditions, and the inclined plates can divide the wastewater into a plurality of steady flow areas for sedimentation, so that the wastewater treatment effect and efficiency are improved.
3. The filter sand is laid above the inclined plate of the sedimentation device provided by the invention and is divided into an upper layer and a lower layer, coarse sand is laid on the upper layer, fine sand is laid on the lower layer, and the quality of effluent is ensured by secondary sand filtration.
4. The sedimentation device provided by the invention has a filter sand backwashing function, and can automatically and periodically clean the filter sand, so that the long-term filtering effect of the filter sand is ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the combination of a high efficiency precipitation module and a backwash module of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, an SS multi-layer mixed flow precipitation device comprises a water inlet module, a high-efficiency precipitation module and a backwashing module. The water inlet module comprises a waste water collecting tank 1, a sewage lifting pump 2 and a first on-off valve 3. The sewage lift pump 2 is arranged at the bottom of the inner cavity of the wastewater collecting tank 1. The water outlet of the sewage lifting pump 2 is connected with the water inlet of the first on-off valve 3. The high-efficient module of deposiing includes that gunbarrel 4, central inlet tube 5, manger plate weir 6, n layer water purification swash plate 7, m variable speed mix district 8, thin graticule mesh 9, unpowered sand filtration purification zone 10, second cut-off valve 13 and pneumatic diaphragm pump 14. n is more than or equal to 2, and m is n-1.
The upper part of the settling tank 4 is cylindrical, and the lower part is funnel-shaped. One or more overflow ports 11 are arranged on the side part of the top of the inner cavity of the settling tank 4; the bottom of the inner cavity of the settling tank 4 is provided with a sludge discharge port 12. A vertically arranged central water inlet pipe 5 is arranged at the central position of the upper part of the settling tank 4. The water inlet of the central water inlet pipe 5 is connected with the water outlet of the first on-off valve 3 in the water inlet module. The water inlet of the central water inlet pipe 5 is arranged at the central position of the top end of the sedimentation tank 4. The water-blocking weir plate 6 is fixed in the middle of the settling tank 4 and is positioned right below the water outlet of the central water inlet pipe 5; the top of water baffle weir plate 6 is provided with the slope and divides the surface of water, can divide the waste water of central inlet tube 5 output, plays homodisperse waste water to reduce the effect of waste water velocity of flow.
The water purification sloping plate 7 is annular. The n layers of water purification inclined plates 7 are sleeved on the central water inlet pipe 5 and are sequentially arranged at equal intervals along the vertical direction. A variable speed mixing region 8 is formed by a gap between any two adjacent layers of water purification inclined plates 7, and fine particles rising in the water purification inclined plate at the lower layer and fine particles falling in the water purification inclined plate at the upper layer collide and extrude with each other in the mixing region to gradually form larger suspended particles with specific gravity larger than that of water, and the larger suspended particles are settled to the bottom of the settling tank 4, so that the fine particles are removed; a plurality of inclined flow passages are arranged in the water purification inclined plate 7. The inclined flow channel forms an included angle of 60 degrees with the horizontal plane; the inclined flow channels in the two adjacent layers of water purification inclined plates have opposite inclined directions; the distance between two adjacent layers of water purification sloping plates is 0.2 m.
The fine grid 9 is laid on the top of the inner cavity of the settling tank 4. An unpowered sand filtration purification area 10 is laid above the fine grid 9. The unpowered sand filtration purification area 10 consists of two layers of filter sand; the two layers of filter sand are separated by a separation net. The grain size of the filter sand positioned on the upper layer is smaller than that of the filter sand positioned on the lower layer. The sludge discharge port 12 of the settling tank 4 is connected to the input port of an air operated diaphragm pump 14 through a second shut-off valve 13. The output port of the pneumatic diaphragm pump 14 is connected with a sludge discharge device.
The backwashing module comprises an aeration fan 15 and a porous aeration pipe 16; the porous aeration pipe 16 is arranged between the topmost water purification inclined plate 7 and the fine grid 9. The air inlet of the porous aeration pipe 16 is connected with the air outlet of the aeration fan 15.
The SS precipitation method of the SS multilayer mixed flow precipitation device comprises the following specific steps:
the SS multilayer mixed flow sedimentation device has three working states, namely a normal working state, a sludge discharge state and a backwashing state. When the operation is started, the SS multilayer mixed flow precipitation device operates in a normal working state; the sludge in the settling tank 4 reaches a preset amount, or after the sludge continuously runs for a first preset time in a normal working state, the SS multilayer mixed flow settling device enters a sludge discharge state while keeping the normal working state; after the sludge discharge is finished, the sludge discharge state is finished; when the sand filtration needs to be washed, the SS multilayer mixed flow sedimentation device enters a backwashing state.
Under the normal working state, the sewage lifting pump 2 is started, the first on-off valve 3 is switched on, and the second on-off valve 13, the pneumatic diaphragm pump 14 and the aeration fan 15 are switched off; the sewage lifting pump 2 injects the high SS wastewater in the wastewater collecting tank 1 into the settling tank 4 through the central water inlet pipe 5; the water-blocking weir plate 6 uniformly disperses the wastewater output from the central water inlet pipe 5 and reduces the flow rate of the wastewater. At this time, the suspended particles having a density greater than that of water sink and gather in the sludge discharge port 12 under the action of gravity, and the fine suspended particles having a density less than that of water gradually float upward under the action of buoyancy and pass through the water purification inclined plate. The water purification inclined plate divides the upward flowing wastewater into a plurality of inclined steady flow areas, fine suspended particles are gradually condensed and enlarged under the action of the inclined plate to form suspended particle clusters, and then gradually descend under the action of gravity and are also gathered in the sludge discharge port 12. In addition, in the variable speed mixing area 8 formed by the gap between two adjacent water purification inclined plates, the flow speed of the waste water is reduced again; the waste water that next floor water purification swash plate upflow gathers sunken suspension granule group behind the grow in the water purification swash plate of last floor and joins in the variable speed mixing area 8 in the centre, has increased the disturbance and has made the further increase of suspension granule group to make the suspended solid more rapidly, stable sinking. Therefore, the multilayer water purification inclined plate and the variable speed mixing zones 8 generated by the multilayer water purification inclined plate greatly improve the water purification effect and achieve unexpected technical effects. After being treated by the water purification sloping plate repeatedly for many times, the wastewater flowing upwards enters the unpowered sand filtration purification area 10 through the fine grid; the filtering sand in the unpowered sand filtering and purifying area 10 carries out secondary filtering on the wastewater, thereby ensuring the effluent quality after the high SS wastewater treatment. The purified water filtered by the unpowered sand filtration purification area 10 is discharged through an overflow port 11 at the top of the sedimentation tank 4. The invention utilizes the laminar flow principle, shortens the settling distance of suspended matters, reduces the settling time and further improves the treatment efficiency of the settling tank.
And in the sludge discharge state, the second on-off valve 13 and the pneumatic diaphragm pump 14 are started, the sludge gathered at the sludge discharge port 12 is discharged outwards through the pneumatic diaphragm pump 14, and the sludge is subjected to reduction, recycling and harmless treatment.
Under the backwashing state, the sewage lift pump 2 and the first on-off valve 3 are closed, water inflow is stopped, the aeration fan 15 is started, the porous aeration pipe 16 starts aeration, coarse sand and fine sand in the sand filtration purification area are cleaned through bubble disturbance, and therefore the sand filtration purification area is internally provided with the coarse sand and the fine sand
And discharging the filtering pollutants in the sand filtering area. After 5 minutes of continuous aeration, the second stop valve 13 and the pneumatic diaphragm pump 14 are started to discharge mud and water from the bottom, pollutants in the sand filtration area are separated from the filter sand and then gradually descend along with sewage, and the pollutants descend to a mud bucket under the action of gravity and are discharged along with mud and water. Continuously aerating and gradually discharging muddy water, when the sewage level is lower than the porous aeration pipe 16, closing the aeration fan 15, stopping aeration of the porous aeration pipe 16, closing the second on-off valve 13 and the pneumatic diaphragm pump 14, stopping sludge discharge, finishing backwashing of filtered sand, restarting the sewage lifting pump 2 and the first on-off valve 3, and entering a normal water production state.

Claims (7)

1. A SS multilayer mixed flow precipitation device comprises a water inlet module and a high-efficiency precipitation module; the method is characterized in that: the water inlet module comprises a wastewater collecting tank and a sewage lifting pump; the sewage lifting pump is arranged at the bottom of the inner cavity of the wastewater collecting tank; the high-efficiency precipitation module comprises a precipitation tank, a central water inlet pipe, a plurality of layers of water purification inclined plates, a fine grid, an unpowered sand filtration purification area and a water retaining weir plate; the upper part of the settling tank is cylindrical, and the lower part of the settling tank is funnel-shaped; one or more overflow ports are arranged on the side part of the top of the inner cavity of the settling tank; a sludge discharge port is formed in the bottom of the inner cavity of the settling tank; the vertically arranged central water inlet pipe is arranged at the central position of the upper part of the settling tank; the water inlet of the central water inlet pipe is connected with the sewage lifting pump through a first on-off valve; the water retaining weir plate is fixed in the middle of the settling tank and is positioned right below the water outlet of the central water inlet pipe; the top of the water blocking weir plate is provided with an inclined water dividing surface; the water purifying sloping plate is annular; the multilayer water purification sloping plates are sleeved on the central water inlet pipe and are sequentially arranged at intervals along the vertical direction; a plurality of inclined flow passages are arranged in the water purifying inclined plate; a variable speed mixing area is formed in a gap between any two adjacent layers of water purification inclined plates; the fine grid net is laid on the top of the inner cavity of the settling tank; an unpowered sand filtration purification area is laid above the fine grid.
2. An SS multilayer mixed flow precipitation device, according to claim 1, wherein: the device also comprises a backwashing module; the backwashing module comprises an aeration fan and a porous aeration pipe; the porous aeration pipe is arranged between the topmost water purification inclined plate and the fine grid; the air inlet of the porous aeration pipe is connected with the air outlet of the aeration fan.
3. An SS multilayer mixed flow precipitation device, according to claim 2, wherein: the high-efficiency precipitation module also comprises a second on-off valve and a pneumatic diaphragm pump; and a sludge discharge port of the settling tank is connected with an input port of the pneumatic diaphragm pump through a second cut-off valve.
4. An SS multilayer mixed flow precipitation device, according to claim 1, wherein: the unpowered sand filtration purification area consists of two layers of filter sand; the two layers of sand filters are separated by a separation net; the grain size of the filter sand positioned on the upper layer is smaller than that of the filter sand positioned on the lower layer.
5. An SS multilayer mixed flow precipitation device, according to claim 1, wherein: and the output port of the pneumatic diaphragm pump is connected with a sludge discharge device.
6. An SS multilayer mixed flow precipitation device, according to claim 1, wherein: the included angle between the inclined flow passage in the water purification inclined plate and the horizontal plane is 60 degrees; the inclined flow channels in the two adjacent layers of water purification inclined plates have opposite inclined directions; the distance between two adjacent layers of water purification sloping plates is 0.2 m.
7. A precipitation method for an SS multilayer mixed flow precipitation device, as claimed in claim 3, wherein: the method comprises the following steps that firstly, a sewage lifting pump is started, a pneumatic diaphragm pump is closed, a first on-off valve is conducted, a second on-off valve is closed, an aeration fan is closed, the wastewater in a wastewater collecting tank is injected into a settling tank from top to bottom through a central water inlet pipe, and a water blocking weir plate uniformly disperses the input wastewater and reduces the flow rate;
step two, the suspended particles with the density larger than that of water can sink to a sludge discharge port under the action of gravity; suspended particles with density less than that of water rise in the sedimentation tank along with water flow under the action of buoyancy and sequentially pass through each layer of water purification inclined plate and each variable speed mixing zone from bottom to top; the water purification inclined plate divides the upward flowing wastewater into a plurality of inclined steady flow areas, and the fine suspended particles are gradually condensed and enlarged under the action of the water purification inclined plate to form suspended particle clusters; the suspended particle groups gradually descend under the action of gravity; in addition, each variable speed mixing zone causes the wastewater flow rate to again decrease; suspended particles in the wastewater flowing upwards from the next layer of water purification inclined plate and suspended particle clusters which are condensed and enlarged and then sink in the previous layer of water purification inclined plate are converged in the variable speed mixing area, and are collided and extruded with each other to form larger suspended particles to sink in an accelerated manner; the wastewater which flows out of the topmost water purification inclined plate upwards is filtered by the unpowered sand filtration purification area and then discharged from the overflow port;
thirdly, after the sludge discharging operation is carried out for a preset time or the sludge in the sedimentation tank reaches a preset amount, the pneumatic diaphragm pump is started, and the second on-off valve is switched on to discharge the sludge in the sedimentation tank; after the sludge is discharged, the pneumatic diaphragm pump is closed, the second cut-off valve is cut off, and the water enters a normal water production state;
step four, after running backwashing for a preset time, closing the sewage lifting pump, closing the first on-off valve, stopping water inflow, starting the aeration fan, starting aeration by using the porous aeration pipe, and cleaning the unpowered sand filtration and purification area through bubble disturbance to enable filtering pollutants in the unpowered sand filtration and purification area to sink; after continuously aerating for 5 minutes, the pneumatic diaphragm pump is started, the second on-off valve is switched on, the muddy water at the bottom of the sedimentation tank is gradually discharged, when the liquid level in the sedimentation tank is lower than the porous aeration pipe, the aeration fan is closed, the porous aeration pipe stops aerating, the second on-off valve is switched off, the pneumatic diaphragm pump is closed, the mud discharge is stopped, the backwashing of the filter sand is finished, the sewage lifting pump is restarted, and the first on-off valve is switched on.
CN202010272131.0A 2020-04-09 2020-04-09 SS multilayer mixed flow precipitation device and precipitation method thereof Pending CN111437636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010272131.0A CN111437636A (en) 2020-04-09 2020-04-09 SS multilayer mixed flow precipitation device and precipitation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010272131.0A CN111437636A (en) 2020-04-09 2020-04-09 SS multilayer mixed flow precipitation device and precipitation method thereof

Publications (1)

Publication Number Publication Date
CN111437636A true CN111437636A (en) 2020-07-24

Family

ID=71651337

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010272131.0A Pending CN111437636A (en) 2020-04-09 2020-04-09 SS multilayer mixed flow precipitation device and precipitation method thereof

Country Status (1)

Country Link
CN (1) CN111437636A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112520943A (en) * 2020-11-26 2021-03-19 中建水务环保有限公司 Multi-section coupling combined ecological water environment restoration device
CN112744965A (en) * 2021-01-25 2021-05-04 西南林业大学 Inclined plate pipe-electric air floatation and filtration integrated device and sewage treatment method
CN112870844A (en) * 2021-03-12 2021-06-01 中国恩菲工程技术有限公司 Filtration recovery system and method
CN113058325A (en) * 2021-03-03 2021-07-02 江苏新达石英有限公司 Quartz sand water mill wastewater recovery treatment device and working method thereof
CN113058326A (en) * 2021-03-12 2021-07-02 中国恩菲工程技术有限公司 Electrolyte filtration system and method
CN113619828A (en) * 2021-06-25 2021-11-09 长三角(义乌)生态环境研究中心 Shunt device for filling of geotextile bags
CN114014460A (en) * 2021-11-02 2022-02-08 山鹰国际控股股份公司 Desulfurization wastewater treatment system
CN114602240A (en) * 2022-03-08 2022-06-10 上海山美环保装备股份有限公司 Efficient fine sand recovery device with centralized liquid inlet at sustainable end part
CN114699842A (en) * 2022-04-26 2022-07-05 张博 High-efficiency low-amplitude energy-saving dewatering screen
CN114835330A (en) * 2022-04-29 2022-08-02 内蒙古农业大学 Intelligent integrated system is utilized to portable water resource high efficiency
CN117756253A (en) * 2024-02-22 2024-03-26 龙南市祥安材料有限公司 Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation
CN117756253B (en) * 2024-02-22 2024-05-31 龙南市祥安材料有限公司 Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2168861Y (en) * 1993-04-10 1994-06-15 宋志云 Solid-liquid separator
CN201634500U (en) * 2010-01-25 2010-11-17 厦门市威士邦膜科技有限公司 Aeration biological filter
CN207745562U (en) * 2017-12-12 2018-08-21 昆山循清环保工程有限公司 A kind of flocculation sediment equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2168861Y (en) * 1993-04-10 1994-06-15 宋志云 Solid-liquid separator
CN201634500U (en) * 2010-01-25 2010-11-17 厦门市威士邦膜科技有限公司 Aeration biological filter
CN207745562U (en) * 2017-12-12 2018-08-21 昆山循清环保工程有限公司 A kind of flocculation sediment equipment

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
朱月海等: "《工业给水处理》", 30 September 2016, 同济大学出版社 *
路静等: "《港口环境污染治理技术》", 30 November 2007, 海洋出版社 *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112520943B (en) * 2020-11-26 2022-03-29 中建水务环保有限公司 Multi-section coupling combined ecological water environment restoration device
CN112520943A (en) * 2020-11-26 2021-03-19 中建水务环保有限公司 Multi-section coupling combined ecological water environment restoration device
CN112744965A (en) * 2021-01-25 2021-05-04 西南林业大学 Inclined plate pipe-electric air floatation and filtration integrated device and sewage treatment method
CN113058325A (en) * 2021-03-03 2021-07-02 江苏新达石英有限公司 Quartz sand water mill wastewater recovery treatment device and working method thereof
CN112870844A (en) * 2021-03-12 2021-06-01 中国恩菲工程技术有限公司 Filtration recovery system and method
CN113058326A (en) * 2021-03-12 2021-07-02 中国恩菲工程技术有限公司 Electrolyte filtration system and method
CN113619828A (en) * 2021-06-25 2021-11-09 长三角(义乌)生态环境研究中心 Shunt device for filling of geotextile bags
CN114014460A (en) * 2021-11-02 2022-02-08 山鹰国际控股股份公司 Desulfurization wastewater treatment system
CN114602240A (en) * 2022-03-08 2022-06-10 上海山美环保装备股份有限公司 Efficient fine sand recovery device with centralized liquid inlet at sustainable end part
CN114602240B (en) * 2022-03-08 2023-09-26 上海山美环保装备股份有限公司 High-efficient fine sand recovery unit of liquid is concentrated to sustainability tip
CN114699842A (en) * 2022-04-26 2022-07-05 张博 High-efficiency low-amplitude energy-saving dewatering screen
CN114699842B (en) * 2022-04-26 2024-04-09 张博 High-efficiency low-amplitude energy-saving dewatering screen
CN114835330A (en) * 2022-04-29 2022-08-02 内蒙古农业大学 Intelligent integrated system is utilized to portable water resource high efficiency
CN117756253A (en) * 2024-02-22 2024-03-26 龙南市祥安材料有限公司 Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation
CN117756253B (en) * 2024-02-22 2024-05-31 龙南市祥安材料有限公司 Mixed feed liquid continuous thickening, enriching and separating method based on large-diameter tube sedimentation

Similar Documents

Publication Publication Date Title
CN111437636A (en) SS multilayer mixed flow precipitation device and precipitation method thereof
CN110272150A (en) A kind of sewage disposal device for the cyclone sediment filtering integral that flocculates
CN113893608A (en) Suspension quick filter device
CN201752601U (en) Fiber-filter-cloth rotary disc filter device
CN113636689B (en) Micro-vortex flocculation suspension quick filtering device
CN205556208U (en) Baffling formula lacks aerobic reaction ware
CN210613113U (en) Suspended solid waste water mixed flow processing apparatus
CN104556485A (en) High-efficiency oil removal and turbidity removal device and oil-containing and turbidity-containing wastewater treatment process
CN201890787U (en) Double-layered pressure type integrated deoiler
CN201292297Y (en) Integral water purifier
CN111018249A (en) Sewage strengthening pretreatment integrated equipment
CN105712582A (en) Reverse-size deep bed filter pool applied to sewage treatment plant upgrading and reconstruction
CN216223315U (en) Suspension filter device
CN105130122B (en) Activated sludge biochemical filter sewage processing unit
CN211170156U (en) Sewage treatment device capable of removing fine silt
CN211644953U (en) Dry land outlet purifier
CN209618964U (en) A kind of flocculation sedimentation tank
CN210521867U (en) Suspended solid waste water double-layer mixed flow precipitation and concentration integrated equipment
CN219815581U (en) Novel sewage filtration system
CN2566927Y (en) Floating-ball type automatic layering filter device for sewage
CN206262178U (en) For the continuous dynamic filter of sewage disposal
CN106892494B (en) Variable-speed multi-flow clarifier
CN114772694B (en) Hydraulic vortex and micro vortex flocculation combined siphon surface filtration wastewater treatment system
CN219050615U (en) Horizontal circulation filter tank
CN208532504U (en) River purifying processing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination