WO2022127011A1 - Équipement de filtration d'eau et son procédé de fonctionnement - Google Patents

Équipement de filtration d'eau et son procédé de fonctionnement Download PDF

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Publication number
WO2022127011A1
WO2022127011A1 PCT/CN2021/093337 CN2021093337W WO2022127011A1 WO 2022127011 A1 WO2022127011 A1 WO 2022127011A1 CN 2021093337 W CN2021093337 W CN 2021093337W WO 2022127011 A1 WO2022127011 A1 WO 2022127011A1
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WO
WIPO (PCT)
Prior art keywords
water
pipe
air
backwash
gas
Prior art date
Application number
PCT/CN2021/093337
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English (en)
Chinese (zh)
Inventor
陈海鹰
檀冰
王道新
邱汝彬
Original Assignee
福州海恒水务设备有限公司
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Filing date
Publication date
Application filed by 福州海恒水务设备有限公司 filed Critical 福州海恒水务设备有限公司
Publication of WO2022127011A1 publication Critical patent/WO2022127011A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/46—Regenerating the filtering material in the filter
    • B01D24/4631—Counter-current flushing, e.g. by air
    • B01D24/4636—Counter-current flushing, e.g. by air with backwash shoes; with nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/007—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection
    • B01D24/008—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with multiple filtering elements in series connection arranged concentrically or coaxially
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/02—Filters 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
    • B01D24/10—Filters 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
    • B01D24/12—Downward filtration, the filtering material being supported by pervious surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
    • B01D24/38—Feed or discharge devices
    • B01D24/40—Feed or discharge devices for feeding
    • B01D24/402—Feed or discharge devices for feeding containing fixed liquid displacement elements or cores

Definitions

  • the present invention relates to a water filtration device and its working method.
  • the conventional filter tank mainly uses quartz sand as the filter material.
  • the filtered water passes through the water inlet valve and the square hole from the main water inlet channel, overflows the weir mouth, and then enters the V-shaped groove through the side hole. It enters the filter tank through the V-shaped groove and the water distribution hole at the bottom of the V-shaped groove respectively.
  • the filter tank After the filtered water passes through the filter material layer from top to bottom, it is collected by the water distribution system and enters the clear water tank; when the effluent quality does not meet the requirements or the filter layer When the water head loss reaches the maximum value, the filter tank needs to be backwashed.
  • the backwash gas and water pass through the filter material layer from bottom to top through the water distribution system.
  • the sand particles begin to move, causing the sand particles to rub and collide with each other, and the sludge attached to the surface of the sand particles falls off during the friction between the sand particles. ..
  • the present invention improves the above problems, that is, the technical problem to be solved by the present invention provides a water filtration device and a working method thereof.
  • the water filtration device has a simple structure, is convenient to manufacture, and is flexible to use.
  • the water filtration equipment of the present invention is characterized in that it comprises a cylindrical tank with a sewage water inlet on the upper part, a gas-water backwash chamber arranged in the bottom of the cylindrical tank, and a gas-water backwash chamber provided in the cylindrical tank and located above the gas-water backwash chamber.
  • the filter layer, the air and water recoil chamber is provided with an air and water recoil mechanism, and the air and water recoil mechanism includes a lower center pipe with an air wash port and a water wash port on the pipe wall, and a lower center pipe with an air wash port and a water wash port on the pipe wall.
  • the backwash air inlet pipe and the backwash water inlet pipe are connected by pipes.
  • the backwash air inlet pipe is provided with a plurality of air ports along its length direction, and the backwash water inlet pipe is provided with a plurality of drain ports along its length direction.
  • An upper center pipe with a closed bottom is arranged above the gas-water recoil chamber, a sewage overflow inlet is arranged on the upper center pipe, and a sewage pipeline extending out of the gas-water recoil chamber is arranged on the lower side of the upper center pipe.
  • the above-mentioned cylindrical tank is a cylindrical stainless steel tank body, and a circle of cofferdam plates is arranged on the inner wall surface of the cylindrical tank and on the side of the sewage inlet, and the cofferdam plate and the inner wall surface of the cylindrical tank form a ring shape. Grooves with serrations on the upper edge of the cofferdam plate.
  • a plurality of support rods are arranged between the inner wall surface of the cylindrical tank and the upper central pipe.
  • the filter layer is located between the inner wall surface of the cylindrical tank and the upper central tube, and the filter layer includes a fine quartz sand filter material layer and a coarse quartz sand filter material layer.
  • the plate surface of the air-water backflushing chamber in contact with the filter layer has filter holes or a long-handled filter cap.
  • the upper port of the upper central pipe is higher than the upper surface of the filter layer.
  • the above-mentioned backwash intake pipe includes an intake annular pipe and a plurality of backwash intake branch pipes for connecting the lower central pipe and the intake annular pipe
  • the backwash water intake pipe includes a water intake annular pipe and a plurality of The backwash water inlet branch pipe connecting the water inlet annular pipe and the lower central pipe.
  • the side part of the lower central pipe is provided with a water washing pipe extending out of the air-water backwash chamber, and the end of the water washing pipe is communicated with the water washing port; the side part of the lower central pipe is provided with an air wash extending out of the air-water backwash chamber
  • the air wash pipe is communicated with the air wash port, and the air wash port is located above the water wash port of the water inlet pipe.
  • the working method of the water filtration equipment of the present invention is characterized in that: the water filtration equipment comprises a cylindrical tank with a sewage water inlet on the upper part, a gas-water backwash chamber provided in the cylindrical tank with a closed bottom, and a cylindrical tank provided in the cylindrical tank.
  • the filter layer is located above the gas-water recoil chamber.
  • the gas-water recoil chamber is provided with an air and water recoil mechanism.
  • the air and water recoil mechanism includes a lower center with an air wash port and a water wash port on the pipe wall.
  • the pipe and its periphery are provided with a backwash air inlet pipe and a backwash water inlet pipe respectively communicating with the lower central pipe.
  • the backwash air inlet pipe is provided with a plurality of air ports along its length direction, and the backwash water inlet pipe is provided with a plurality of air ports along its length direction.
  • the sewage pipeline of the flushing chamber when the filtration is working, the sewage enters the cylindrical tank from the sewage water inlet, and the filtered water enters the air-water backwashing chamber, the backwashing water inlet pipe and the lower central pipe after being filtered layer by layer of the filter layer. Finally, the filtered water is discharged from the water washing pipe on the lower center pipe.
  • the filter structure works for a period of time, when the dirt in the filter layer reaches a considerable amount, the filtration resistance of the filter layer increases, resulting in a decrease in the amount of filtration. At this time, the filter layer needs to be backwashed to remove the dirt in the filter layer.
  • the filter layer will wash away the impurities deposited on the filter layer; when high-pressure water is flushed, the high-pressure flushing water will be passed into the water washing pipe, and the water will flow from the inside of the lower center pipe through the backwashing water inlet pipe, the water outlet, and the gas-water backwashing chamber in turn. And the long handle filter cap enters the filter layer, and the water flows through the filter layer to wash the impurities filtered and deposited on the filter layer.
  • the present invention has the following beneficial effects: the device is simple in structure, reasonable in design, convenient in use, good in sewage filtration and backwashing effect, convenient in production and manufacture, flexible in movement, convenient in replacement and maintenance, and suitable for different use scenarios .
  • Fig. 1 is the sectional structure schematic diagram of the present invention
  • Fig. 2 is the partial structure schematic diagram of Fig. 1;
  • Figure 3 is a perspective view of the gas and water recoil mechanism
  • Fig. 4 is the top view of gas, water recoil mechanism
  • Fig. 5 is the water flow schematic diagram of filtered water
  • Figure 6 is a schematic diagram of water flow during backwashing.
  • the water filtration equipment of the present invention comprises a cylindrical tank 2 with a sewage water inlet 1 on the upper part, a gas-water backwash chamber 3 provided in the cylindrical tank 2 with a closed bottom, and a gas-water backwash chamber 3 provided in the cylindrical tank 2 and located above the gas-water backwash chamber
  • the filter layer 4 the space in the gas-water recoil chamber 3 is relatively airtight, not absolutely closed, the gas-water recoil chamber 3 is provided with an air and water recoil mechanism 5, and the gas and water recoil mechanism 5
  • the lower center pipe 8 with the air washing port 6 and the water washing port 7 on the pipe wall, the backwash air inlet pipe 9 and the backwash water inlet pipe 10 which are respectively communicated with the lower center pipe 8 are arranged on the periphery, and the backwash air inlet pipe 9 is along its length.
  • Pipe 13 the upper end of the upper center pipe is provided with a sewage overflow inlet 14, the lower side of the upper center pipe is provided with a sewage pipe 15 extending out of the gas-water backwash chamber, the outer periphery of the cylindrical tank 2 and the gas-water backwash chamber 3
  • the wall surface can be integrally made into a cylindrical shell, and a diaphragm 16 is arranged in the lower part of the cylindrical shell, so that the cylindrical shell, its bottom surface and the diaphragm form a closed gas-water recoil chamber 3, and the upper central pipe
  • the lower central tube and the upper central tube can be coaxial tube bodies, and the parts where the upper central tube and the lower central tube are connected with the diaphragm can be reinforced by reinforcing rib plates.
  • the sewage enters the cylindrical tank from the sewage inlet. After the filtered water and the sewage are filtered layer by layer, they enter the air-water backwash chamber, the backwash water inlet pipe and the lower center pipe. Finally, the filtered water It is discharged from the water washing pipe on the lower center pipe.
  • the above-mentioned cylindrical tank is a cylindrical stainless steel tank, which is convenient to manufacture and has good structural stability.
  • the weir plate 30, the cofferdam plate and the inner wall of the cylindrical tank form an annular groove 17, and the upper edge of the cofferdam plate has serrations 18.
  • a number of support rods 31 are arranged between the inner wall surface of the cylindrical tank and the upper center pipe.
  • the cylindrical tank has 2-4 layers, and each layer is evenly distributed with 2-4 support rods Rod 31.
  • the above-mentioned filter layer 4 is located between the inner wall surface of the cylindrical tank and the upper central tube.
  • the filter layer 4 includes a fine quartz sand filter material layer 19 and a coarse quartz sand filter material layer 20 from top to bottom in turn.
  • the thickness of the quartz sand filter material layer 19 may be 1-8 times the thickness of the coarse quartz sand filter material layer 20 .
  • the plate surface of the gas-water backflushing chamber in contact with the filter layer ie, the diaphragm 16
  • the filter can be selected as a long-handled filter cap 27 .
  • the upper port of the upper central pipe ie the sewage overflow inlet 14
  • the upper end of the upper central pipe has a positive conical shell 21 and a reverse conical shell 22 connected to each other, Adopting the design of the forward conical shell 21 and the reverse conical shell 22 (the upper port of the upper central pipe is small) is beneficial to avoid the reverse flow of sewage entering the upper central pipe.
  • the above-mentioned backflushing intake pipe 9 includes an intake annular pipe 23 and a plurality of backflushing intake branch pipes 24 for connecting the lower central pipe 8 and the intake annular pipe 23.
  • the backflushing water intake pipe 10 It includes a water inlet annular pipe 25 and a plurality of backwash water inlet branch pipes 26 for connecting the water inlet annular pipe and the lower central pipe.
  • the diameters of the gas ring pipe 23 and the water inlet ring pipe 25 can be different and can be located at different heights.
  • the backwash air inlet branch pipe 24 and the backwash water inlet branch pipe 26 are radially distributed, and several are evenly distributed in the circumferential direction.
  • the air port 11 is arranged on the inlet annular pipe 23 and the backwash inlet branch pipe 24, and the water outlet 12 is arranged on the water inlet annular pipe 25 and the backwash water inlet branch pipe 26.
  • the water will pass through the filter layer 4, the long-handled filter cap 27, the gas-water backwash chamber 3, the drain port 12, the lower center pipe 8 and the water washing pipe in turn.
  • the water passes through the water washing pipe, the lower central pipe 8, the water outlet 12, the gas-water backwash chamber 3, the long-handled filter cap 27 and the filter layer 4 in sequence.
  • the side part of the lower central pipe is provided with a water washing pipe 28 extending out of the gas-water backwash chamber, and the end of the water washing pipe is communicated with the water washing port 7; 29, the air wash pipe is communicated with the air wash port 6, the air wash port is located above the water wash port of the water inlet pipe, and the water wash pipe 28 and the air wash pipe 29 are connected with opening and closing valves to control the on-off of water or gas.
  • An air wash branch pipe 32 is branched on the air wash pipe 29, and the end of the air wash branch pipe 32 is connected to the top of the annular groove 17, so as to facilitate the air wash, make the dirt more easily flow into the filter layer, and also help the air wash to be located in the filter layer.
  • the water filtration equipment comprises a cylindrical tank with a sewage water inlet on the upper part, a gas-water backwash chamber provided in the cylindrical tank and closed at the bottom, and a gas-water recoil chamber provided in the cylindrical tank and located in the gas-water
  • the filter layer above the recoil chamber, the air-water recoil chamber is provided with an air and water recoil mechanism, and the air and water recoil mechanism includes a lower center pipe with an air wash port and a water wash port on the pipe wall, and a peripheral setting There are a backwash air inlet pipe and a backwash water inlet pipe which are respectively communicated with the lower central pipe.
  • the backwash air inlet pipe is provided with a plurality of air ports along its length direction, and the backwash water inlet pipe is provided with a plurality of drain ports along its length direction.
  • Pipeline; the dirt overflowing into the upper center pipe is discharged through the sewage pipe on the lower side of the upper center pipe.
  • the filter structure works for a period of time, when the dirt in the filter layer reaches a considerable amount, the filtration resistance of the filter layer increases, resulting in a decrease in the amount of filtration. At this time, the filter layer needs to be backwashed to remove the dirt in the filter layer.
  • the filter layer will wash away the impurities deposited on the filter layer; when high-pressure water is flushed, the high-pressure flushing water will be passed into the water washing pipe, and the water will flow from the inside of the lower center pipe through the backwashing water inlet pipe, the water outlet, and the gas-water backwashing chamber in turn. And the long handle filter cap enters the filter layer, and the water flows through the filter layer to wash the impurities filtered and deposited on the filter layer.
  • Pipeline discharge when high-pressure water flushing and high-pressure air flushing are carried out together, that is, the above two methods are carried out at the same time, that is, high-pressure flushing water is introduced into the water washing pipe and high-pressure gas is introduced into the air-washing pipe. , the water flow rate can be doubled.
  • the filtration period of the water filtration equipment of the invention is extended by about 75% compared with the existing filter tank with pure water flushing, the amount of intercepted sewage can be increased by 118%, and the consumption of backwash water can be reduced by more than 40% compared with the filter tank with pure water flushing ,
  • the filter tank is flushed with air, the air is pressed into the filter layer 4 by the blower (connected to the air washing pipe 29), so the filtering performance of the filter tank is improved from the following aspects:
  • the particles of the filter material can be continuously vortexed and diffused, which promotes the cyclic mixing of the filter layer particles, thereby obtaining a mixed filter layer with a relatively uniform gradation, and its porosity is higher than that of the gradation.
  • the grading filter layer of the filter material improves the filtration performance, thereby improving the filter layer's ability to intercept dirt.
  • fixed connection can be understood as: detachable fixed connection (for example, using bolts or screws), or It is understood as: non-removable fixed connection (such as riveting, welding), of course, the mutual fixed connection can also be replaced by a one-piece structure (for example, integrally formed using a casting process) (except that it is obviously impossible to use the one-piece forming process).
  • Any component provided by the present invention may be assembled from a plurality of individual components, or may be a single component manufactured by an integral molding process.

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

Abstract

Équipement de filtration d'eau et son procédé de fonctionnement. L'équipement de filtration d'eau comprend un réservoir cylindrique (2) dont la partie supérieure est pourvue d'une entrée d'eaux usées (1), une chambre de lavage à contre-courant d'air-eau (3) disposée au niveau de la partie inférieure dans le réservoir cylindrique (2), et des couches de filtration (4) disposées dans le réservoir cylindrique (2) et situées au-dessus de la chambre de lavage à contre-courant d'air-eau (3). Un mécanisme de lavage à contre-courant d'air-eau (5) est disposé dans la chambre de lavage à contre-courant d'air-eau (3). Le mécanisme de lavage à contre-courant d'air-eau (5) comprend un tuyau central inférieur (8) dont la paroi de tuyau est pourvue d'un orifice de lavage d'air (6) et d'un orifice de lavage d'eau (7), et un tuyau d'entrée d'air de lavage à contre-courant (9) et un tuyau d'entrée d'eau de lavage à contre-courant (10) qui communiquent séparément avec le tuyau central inférieur (8) et est disposé sur la périphérie. Une pluralité d'orifices d'air (11) sont formés dans le tuyau d'entrée d'air de lavage à contre-courant (9) dans la direction de la longueur de celui-ci, et une pluralité d'orifices de drainage (12) sont formés dans le tuyau d'entrée d'eau de lavage à contre-courant (10) dans la direction de la longueur de celui-ci. Un tuyau central supérieur (13) qui est fermé au niveau de la surface inférieure est disposé dans le réservoir cylindrique (2) et situé au-dessus de la chambre de lavage à contre-courant d'air-eau (3). Une entrée de débordement d'eaux usées (14) est formée dans le tuyau central supérieur (13). La partie latérale inférieure du tuyau central supérieur (13) est pourvue d'un tuyau de drainage d'eaux usées (15) s'étendant hors de la chambre de lavage à contre-courant d'air-eau (3). Pendant la filtration, les eaux usées pénètrent dans le réservoir cylindrique (2) à partir de l'entrée d'eaux usées (1), l'eau à filtrer entre dans la chambre de lavage à contre-courant d'air-eau (3), le tuyau d'entrée d'air de lavage à contre-courant (9), et le tuyau central inférieur (8) après avoir été séquentiellement filtrée par les couches de filtration (4) une par une, et enfin l'eau filtrée est évacuée d'un tuyau de lavage d'eau (28) sur le tuyau central inférieur (8).
PCT/CN2021/093337 2020-12-15 2021-05-12 Équipement de filtration d'eau et son procédé de fonctionnement WO2022127011A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202011469877.7 2020-12-15
CN202011469877.7A CN112386969A (zh) 2020-12-15 2020-12-15 用水过滤设备及其工作方法

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112386969A (zh) * 2020-12-15 2021-02-23 福州海恒水务设备有限公司 用水过滤设备及其工作方法
CN113461216B (zh) * 2021-07-23 2022-07-15 河北北洋水处理设备有限公司 一体化高效结团净水设备
CN113774996A (zh) * 2021-09-22 2021-12-10 广州全一泵业有限公司 一种智能供水设备

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050000877A1 (en) * 1999-09-21 2005-01-06 Sharkey James P. Method and apparatus for removing particulate contaminants from commercial laundry waste water
CN1657134A (zh) * 2004-02-20 2005-08-24 深圳市清泉水系统工程设备有限公司 反向过滤气水反冲洗滤池及反向过滤、气水反冲洗方法
CN102407037A (zh) * 2011-09-21 2012-04-11 成都碧水齐力市政工程有限公司 气水反冲洗过滤池及气水反冲洗方法
CN103071323A (zh) * 2013-01-15 2013-05-01 东莞市科达环保工程有限公司 一种新型的滤池气水反冲洗方法
CN203342474U (zh) * 2013-05-20 2013-12-18 江苏恒博环境工程设备有限公司 一种反冲洗装置
CN204170467U (zh) * 2014-09-30 2015-02-25 天津市华水自来水建设有限公司 一种采用气水联合反冲洗的普通快滤池
CN112386969A (zh) * 2020-12-15 2021-02-23 福州海恒水务设备有限公司 用水过滤设备及其工作方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050000877A1 (en) * 1999-09-21 2005-01-06 Sharkey James P. Method and apparatus for removing particulate contaminants from commercial laundry waste water
CN1657134A (zh) * 2004-02-20 2005-08-24 深圳市清泉水系统工程设备有限公司 反向过滤气水反冲洗滤池及反向过滤、气水反冲洗方法
CN102407037A (zh) * 2011-09-21 2012-04-11 成都碧水齐力市政工程有限公司 气水反冲洗过滤池及气水反冲洗方法
CN103071323A (zh) * 2013-01-15 2013-05-01 东莞市科达环保工程有限公司 一种新型的滤池气水反冲洗方法
CN203342474U (zh) * 2013-05-20 2013-12-18 江苏恒博环境工程设备有限公司 一种反冲洗装置
CN204170467U (zh) * 2014-09-30 2015-02-25 天津市华水自来水建设有限公司 一种采用气水联合反冲洗的普通快滤池
CN112386969A (zh) * 2020-12-15 2021-02-23 福州海恒水务设备有限公司 用水过滤设备及其工作方法

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