CN113233707A - Air floatation, MBR (membrane bioreactor) and multi-medium filtration integrated smoke plant sewage treatment process equipment - Google Patents
Air floatation, MBR (membrane bioreactor) and multi-medium filtration integrated smoke plant sewage treatment process equipment Download PDFInfo
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- CN113233707A CN113233707A CN202110567658.0A CN202110567658A CN113233707A CN 113233707 A CN113233707 A CN 113233707A CN 202110567658 A CN202110567658 A CN 202110567658A CN 113233707 A CN113233707 A CN 113233707A
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Classifications
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- 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
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- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
Abstract
The invention relates to air flotation, MBR and multi-medium filtration integrated sewage treatment process equipment for a cigarette factory, which comprises an air flotation part, an MBR membrane reaction part and a multi-medium filter; wherein the air flotation part is positioned above the MBR membrane reaction part, and the multi-media filter is positioned at one side of the air flotation part and one side of the MBR membrane reaction part; a water inlet of the air flotation part is connected with a sewage source through a pipeline, a water outlet of the air flotation part is connected with a water inlet of the MBR membrane reaction part through a pipeline, and effluent of the air flotation part enters the MBR membrane reaction area part through self pressure; the effluent of the MBR membrane reaction part is connected with the water inlet of the multi-media filter through an MBR membrane water outlet pump and a pipeline, and the water outlet of the multi-media filter is arranged at the bottom of the multi-media filter. The MBR membrane reaction part, the air flotation part and the multi-media filter are combined together to be used as an integrated device to be placed in a layered mode, so that the occupied area can be greatly reduced, and the maintenance is convenient.
Description
Technical Field
The invention belongs to the technical field of industrial sewage treatment, and particularly relates to integrated cigarette factory sewage treatment process equipment with air floatation, MBR and multi-medium filtration.
Background
The existing sewage treatment process flow generally comprises a suspended particulate matter treatment technology, an MBR membrane-bioreactor separation technology, a biological treatment technology and a multi-medium filtration technology.
A technology for treating suspended particles in sewage mainly utilizes an air floatation treatment technology of suspended particles with equal water specific gravity, and the technological treatment flow is shown in figure 1.
The air floating machine is a machine which utilizes small bubbles or micro-bubbles to float impurities in a medium out of the water surface. The air floating device can be used for treating the fine particles with the specific gravity close to that of water in the water body, and the dead weight of the fine particles is difficult to sink or float.
At present, in the aspect of water supply and drainage, the pretreated water is mostly light suspended particles except for raw water 1 with more sand and sewage with heavier mechanical impurities. For example: algae, plant residues and fine colloidal impurities, tobacco powder short fibers, microdroplets of oily organic solvents, steel corrosion heavy metal ions, cotton and hemp fibers produced for sanitary and clean discharge, excrement residues and the like are light particles with the specific gravity very close to that of water. If the traditional precipitation method is continuously used for the sewage discharged in the tobacco processing production and life, the effect is inevitably poor, and particularly under the low-temperature condition in winter, the treatment effect is more difficult to ensure due to the deterioration of coagulation and hydraulic conditions. Conceivably, the flocs which are difficult to precipitate are hard to sink, but the work is half done, and rather than being directed at the reason, the air bubbles are artificially introduced into the water body to be adhered to the flocs, so that the overall density of the flocs is greatly reduced, and the flocs are forced to float upwards by virtue of the rising speed of the air bubbles, thereby realizing rapid solid-liquid separation. In this sense, the emergence of the air flotation technology is a revolution to the gravity settling method, and it opens up a new field of solid-liquid separation technology. The schematic diagram of the air flotation water generated by the air flotation machine is shown in figure 2 below.
MBR (Membrane Bio-Reactor, MBR Membrane-bioreactor) is a new type of wastewater treatment system that organically combines Membrane separation technology and biological treatment technology. The membrane component replaces a secondary sedimentation tank at the tail end of the traditional biological treatment technology, the concentration of the high-activity sludge is kept in a bioreactor, the organic load of biological treatment is improved, the occupied area of a sewage treatment facility is reduced, and the excess sludge amount is reduced by keeping low sludge load. Mainly utilizes the membrane separation equipment immersed in the aerobic biological tank to trap the activated sludge and macromolecular organic matters in the tank. The concentration of activated sludge (MLSS) in the membrane bioreactor system can be increased to 8000-10000mg/L, even higher; the sludge age (SRT) can be prolonged to more than 30 days. The membrane bioreactor can retain microorganisms with longer generation period due to effective interception, can realize deep purification of sewage, simultaneously nitrifying bacteria can be fully propagated in the system, has obvious nitrification effect, and provides possibility for deep phosphorus and nitrogen removal.
The MBR membrane reactor replaces fixed filter materials with rotating disks, when the MBR membrane reactor works, the rotating disks are immersed or partially immersed in a contact reaction tank filled with sewage, and the rotating shafts drive the rotating disks to continuously rotate together at a certain linear velocity under the drive of the driving device. The rotating disc is alternately contacted with sewage and air, and after a period of rotation, a layer of biological film is attached to the disc. When the wastewater is transferred into the wastewater, the biological membrane adsorbs organic pollutants in the wastewater, and absorbs dissolved oxygen in a water film outside the biological membrane to decompose organic matters, so that microorganisms can reproduce per se in the process; when the rotary disc is rotated out of the reaction tank, the rotary disc is contacted with air, and the air is continuously dissolved into the water film to increase the dissolved oxygen. In the process, besides the transfer of organic substances (BOD, COD) and O2, other substances such as CO2, NH3 and the like are transferred between the biological membrane attached to the rotating disc and the sewage and air, so that a continuous process of adsorption, oxidative decomposition and oxygen absorption is formed, and the sewage is continuously purified. A schematic of the MBR membrane reactor is shown in FIG. 3 below.
The multi-medium filter (filter bed) adopts more than two media as the medium filter of the filter layer, and is used for removing impurities, adsorption oil and the like in sewage in an industrial circulating water treatment system, so that the water quality meets the requirement of recycling. The filtration mainly removes suspended or colloidal impurities in water, particularly, can effectively remove micro particles, bacteria and the like which cannot be removed by the precipitation technology, and also has a certain removal effect on BOD5, COD and the like. A schematic of the multimedia filter is shown in fig. 4 below.
The traditional sewage treatment process is generally as follows: the 'pretreatment and biochemical process' is characterized in that an advanced treatment process is added for recycling the wastewater after the wastewater is treated. Namely 'pretreatment, biochemical process and deep treatment process'; often a plurality of separate devices or tanks are required per the process, which results in an increased overall footprint.
Disclosure of Invention
The invention aims to provide air floatation, MBR (membrane bioreactor) and multi-medium filtration integrated cigarette factory sewage treatment process equipment to solve the problem that the whole occupied area is increased because a plurality of independent equipment or tanks are required in the traditional sewage treatment process.
In order to realize the purpose, the invention is realized by the following technical scheme:
air floatation, MBR and multi-medium filtration integrated smoke plant sewage treatment process equipment comprises an air floatation part, an MBR membrane reaction part and a multi-medium filter; wherein the air flotation part is positioned above the MBR membrane reaction part, and the multi-media filter is positioned at one side of the air flotation part and one side of the MBR membrane reaction part;
a water inlet of the air flotation part is connected with a sewage source through a pipeline, a water outlet of the air flotation part is connected with a water inlet of the MBR membrane reaction part through a pipeline, and effluent of the air flotation part enters the MBR membrane reaction area part through self pressure; the effluent of the MBR membrane reaction part is connected with the water inlet of the multi-media filter through an MBR membrane water outlet pump and a pipeline, and the water outlet of the multi-media filter is arranged at the bottom of the multi-media filter.
Further, the air floatation part comprises an air floatation tank, an air compressor, a dissolved air tank, a dissolved air release pipeline, a dissolved air releaser and a slag scraping device;
the air compressor machine, dissolve the gas pitcher, dissolve gas release pipeline, dissolve the gas releaser and all set up in the one side that the air supporting pond is relative with many media filter, the gas outlet of air compressor machine passes through the pipeline and is connected with dissolving the gas pitcher, dissolves tracheal delivery port and is connected with the dissolved gas releaser that sets up in the air supporting bottom of the pool through dissolving the gas release pipeline, scrapes the sediment device and installs in the top in air supporting pond, and the delivery port of air supporting part sets up in the top that is close to of the adjacent one side of air supporting pond and many media filter.
Further, the slag scraping device comprises a slag scraping motor, a slag scraping chain, a slag scraping plate, a driving gear and a driven gear, the driving gear is connected with an output shaft of the slag scraping motor, the slag scraping chain is arranged on the driving gear and the driven gear, and the slag scraping plate is arranged on the slag scraping chain.
Furthermore, a stirrer is arranged on the side close to the water inlet of the air floatation tank.
Further, the MBR membrane reaction part comprises an aeration tank, an aeration fan, an aeration pipe, an aeration disc, an MBR membrane module, an MBR membrane reaction area and an MBR membrane water outlet pump;
the aeration pipe is arranged at the bottom in the aeration tank, the air inlet end of the aeration pipe penetrates through the side wall of the aeration tank and is connected with the air outlet of the aeration fan, and a plurality of aeration discs are arranged on the aeration pipe; the MBR membrane module sets up the aeration pipe top in the aeration tank, and the aeration tank of MBR membrane module top forms MBR membrane reaction area, and the water inlet of MBR membrane play water pump passes through pipeline and MBR membrane reaction area intercommunication, and the delivery port of MBR membrane play water pump passes through the pipeline and is connected with multi-media filter's water inlet.
Furthermore, a containing chamber is formed between the aeration tank and the multi-media filter, and the aeration fan and the MBR membrane water outlet pump are both arranged in the containing chamber;
and a water inlet of the MBR membrane reaction part is arranged on the side wall between an aeration pipe of the aeration tank and the MBR membrane component.
Furthermore, the multi-media filter is internally provided with filter materials, the filter materials at least comprise four layers, the bottom layer is a gravel supporting layer with the particle size of 32-16mm, the middle layer is a coarse sand layer with the particle size of 16-8mm, the upper layer is a fine sand layer with the particle size of 4-2mm, and the uppermost layer is a smokeless coal layer with the particle size of 4-2 mm.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to air-flotation MBR (membrane bioreactor) integrated equipment, which combines an MBR membrane reaction part, an air-flotation part and a multi-media filter together to be used as integrated equipment for layered placement, can greatly reduce the floor area and is convenient to maintain.
Drawings
FIG. 1 is a schematic view of a sewage treatment process;
FIG. 2 is a schematic diagram of the operation of the air floatation machine;
FIG. 3 is a schematic diagram of the MBR membrane reactor configuration;
FIG. 4 is a schematic view of a multi-media filter construction;
FIG. 5 is a schematic diagram of an MBR membrane reactor, air flotation part and multi-media filter integrated device of the present invention.
Description of the reference numerals
1. Raw water, 2, a dosing device, 3, a pressure pump, 4, a compressed air inlet, 5, a pressurized dissolved air tank, 6, an exhaust valve, 7, a pressure reducing valve, 8, an air flotation water outlet, 9, an air flotation tank, 10, a scraper, 11, a scraping slag recovery tank, 12, a drain valve, 13, a sewage inlet, 14, an aeration tank, 15, a membrane, 16, a water suction pump, 17, an air blower, 18, a gas discharge orifice, 19, a water flow inlet, 20, a smokeless coal bed, 21, a fine sand layer, 22, a coarse sand layer, 23, a gravel supporting layer, 24, a filtering spare part, 25, an outlet, 01, an air compressor, 02, a dissolved air tank, 03, a water inlet of the air flotation tank, 04, a dissolved air release pipeline, 05, a dissolved air device, 06, a stirrer, 07, an air flotation tank, 08, a scraping slag motor, 09, a scraping plate, 010, a scraping slag chain, 011, a water outlet of the air flotation tank, an MBR, a water inlet pipe of a membrane reaction zone, 013. aeration fan, 014, aeration pipe, 015, aeration dish, 016, MBR membrane module, 017, MBR membrane reaction zone, 018, MBR membrane goes out the water pump, 019, multi-media filters inlet tube, 020, multi-media filtration district, 021, fine sand layer, 022, coarse sand layer, 023, gravel supporting layer, 024, multi-media filters delivery port, 025, gas vent.
Detailed Description
The technical solutions of the present invention are described in detail below by examples, and the following examples are only exemplary and can be used only for explaining and explaining the technical solutions of the present invention, but not construed as limiting the technical solutions of the present invention.
The technical scheme is not an improvement on the existing sewage treatment process, and the air floatation process, the biochemical treatment process and the filtration process, which are the main parts of the traditional sewage treatment, are still carried out according to the prior art. The technical scheme of this application only makes up several main component to sewage treatment, forms compact three-dimensional structure, saves the use of secondary sedimentation tank.
Sewage treatment's theory of operation is, sewage that comes from the sewage source enters into air supporting pond 07 through the water inlet 03 in air supporting pond in, water inlet 03 annex in air supporting pond still is provided with mixer 06, be used for mixing the sewage that gets into, be provided with in the top in air supporting pond and scrape the sediment device, be used for getting rid of the light dross that floats on the air supporting pond of density, in this application, scrape the sediment device and be prior art, scrape the sediment device including scraping sediment motor 08, scrape sediment chain 010, scum board 09, drive gear and driven gear and constitute, drive gear and the output shaft who scrapes the sediment motor, scrape the sediment chain and set up on drive gear and driven gear, the scum board is installed on scraping the sediment chain.
The air flotation part of the application also comprises an air compressor 01, a dissolved air tank 02, a dissolved air release pipeline 04 and a dissolved air releaser 05, all the parts also belong to the prior art, detailed description is not carried out, and the technical scheme of the application is mainly the layout of all the parts of sewage treatment and does not improve the functions of all the parts. The air compressor machine, dissolve the gas pitcher, dissolve gas release pipeline, dissolve the gas releaser and all set up in the one side that the air supporting pond is relative with many media filter, the gas outlet of air compressor machine passes through the pipeline and is connected with dissolving the gas pitcher, dissolves tracheal delivery port and is connected with the dissolved gas releaser that sets up in the air supporting bottom of the pool through dissolving the gas release pipeline, scrapes the sediment device and installs in the top in air supporting pond, and the delivery port of air supporting part sets up in the top that is close to of the adjacent one side of air supporting pond and many media filter.
The dissolved air water is filled into the air floatation tank through the dissolved air releaser 05, and a large amount of fine bubbles are generated in the water in the operation process of the air floatation tank and are adhered to small suspended particles in the wastewater. Forming a 'bubble particle' complex body with the whole density smaller than that of water, wherein suspended particles float to the water surface along with bubbles to form foam scum, and the scum is scraped into a scum collecting tank by a scum board, so that suspended matters in water are separated.
The sewage after primary treatment in the air floatation tank passes through a water outlet 011 of the air floatation tank and enters a water inlet of an MBR membrane reaction part through a water inlet pipe 012 of the MBR membrane reaction area, and the effluent of the air floatation part of the MBR membrane reaction area enters the MBR membrane reaction area through self-pressure.
The MBR membrane reaction part comprises an aeration tank, an aeration fan 013, an aeration pipe 014, an aeration disc 015, an MBR membrane module 016, an MBR membrane reaction zone 017 and an MBR membrane water outlet pump 018.
The aeration pipe is arranged at the bottom in the aeration tank, the air inlet end of the aeration pipe penetrates through the side wall of the aeration tank and is connected with the air outlet of the aeration fan, and a plurality of aeration discs are arranged on the aeration pipe; the MBR membrane module sets up the aeration pipe top in the aeration tank, and the aeration tank of MBR membrane module top forms MBR membrane reaction area, and the water inlet of MBR membrane play water pump passes through pipeline and MBR membrane reaction area intercommunication, and the delivery port of MBR membrane play water pump passes through the pipeline and is connected with multi-media filter's water inlet.
MBR is a new high-efficiency sewage treatment process combining high-efficiency membrane separation technology with traditional activated sludge process, and is characterized by that it uses MBR flat-sheet membrane component with unique structure and places it in an aeration tank, and the bottom of the tank is equipped with a microporous aerator for supplying oxygen to the microorganism in the tank, and the pollutant in the waste water can be continuously reacted and degraded under the action of microorganism. The water after aerobic aeration and biological treatment is pumped out after being filtered by a filter membrane by a pump. The method utilizes membrane separation equipment to retain activated sludge and macromolecular organic substances in a biochemical reaction tank, saves a secondary sedimentation tank, greatly improves the concentration of the activated sludge, can respectively control Hydraulic Retention Time (HRT) and Sludge Retention Time (SRT), and continuously reacts and degrades the substances which are difficult to degrade in a reactor. The MBR membrane greatly improves the solid-liquid separation capacity of the system, so that the effluent, the water quality and the volume load of the system are greatly improved.
The effluent of the MBR membrane reactor enters the multi-media filter through an MBR membrane effluent pump 018 and a multi-media filtering water inlet pipe 019 in a pressing manner, and impurities, adsorption oil and the like in sewage are removed through multi-media filtering, so that the water quality meets the requirement of recycling. The filtering effect is mainly to remove suspended or colloidal impurities in water, especially to effectively remove micro particles, bacteria and the like, BOD5And COD, etc. are also removed to some extent.
The multi-medium filter is characterized in that a filter material is arranged below 020 of a multi-medium filtering area and at least comprises four layers, wherein the bottom layer is a gravel supporting layer 023, the grain diameter is 32-16mm, the middle layer is a coarse sand layer 022, the grain diameter is 16-8mm, the upper layer is a fine sand layer 021, the grain diameter is 4-2mm, the uppermost layer is a smokeless coal layer, the grain diameter is 4-2mm, a multi-medium filtering water outlet 024 is arranged below the multi-medium filter, and an exhaust port 025 is arranged above the multi-medium filter.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. Air floatation, MBR and multi-medium filtration integrated sewage treatment process equipment for a cigarette factory is characterized by comprising an air floatation part, an MBR membrane reaction part and a multi-medium filter; wherein the air flotation part is positioned above the MBR membrane reaction part, and the multi-media filter is positioned at one side of the air flotation part and one side of the MBR membrane reaction part;
a water inlet of the air flotation part is connected with a sewage source through a pipeline, a water outlet of the air flotation part is connected with a water inlet of the MBR membrane reaction part through a pipeline, and effluent of the air flotation part enters the MBR membrane reaction area part through self pressure; the effluent of the MBR membrane reaction part is connected with the water inlet of the multi-media filter through an MBR membrane water outlet pump and a pipeline, and the water outlet of the multi-media filter is arranged at the bottom of the multi-media filter.
2. The air flotation, MBR and multi-media filtration integrated cigarette factory sewage treatment process equipment as claimed in claim 1, wherein the air flotation part comprises an air flotation tank, an air compressor, a dissolved air tank, a dissolved air release pipeline, a dissolved air releaser and a slag scraping device;
the air compressor machine, dissolve the gas pitcher, dissolve gas release pipeline, dissolve the gas releaser and all set up in the one side that the air supporting pond is relative with many media filter, the gas outlet of air compressor machine passes through the pipeline and is connected with dissolving the gas pitcher, dissolves tracheal delivery port and is connected with the dissolved gas releaser that sets up in the air supporting bottom of the pool through dissolving the gas release pipeline, scrapes the sediment device and installs in the top in air supporting pond, and the delivery port of air supporting part sets up in the top that is close to of the adjacent one side of air supporting pond and many media filter.
3. The air flotation, MBR and multi-media filtration integrated cigarette factory sewage treatment process equipment as claimed in claim 2, wherein the slag scraping device comprises a slag scraping motor, a slag scraping chain, a slag scraping plate, a driving gear and a driven gear, the driving gear is connected with an output shaft of the slag scraping motor, the slag scraping chain is arranged on the driving gear and the driven gear, and the slag scraping plate is arranged on the slag scraping chain.
4. The integrated gas floatation, MBR and multi-media filtration smoke plant sewage treatment process equipment as claimed in claim 2, wherein a stirrer is arranged on the side close to the water inlet of the gas floatation tank.
5. The air flotation, MBR and multi-media filtration integrated cigarette factory sewage treatment process equipment as claimed in claim 1, wherein the MBR membrane reaction part comprises an aeration tank, an aeration fan, an aeration pipe, an aeration disc, an MBR membrane module, an MBR membrane reaction area and an MBR membrane water outlet pump;
the aeration pipe is arranged at the bottom in the aeration tank, the air inlet end of the aeration pipe penetrates through the side wall of the aeration tank and is connected with the air outlet of the aeration fan, and a plurality of aeration discs are arranged on the aeration pipe; the MBR membrane module sets up the aeration pipe top in the aeration tank, and the aeration tank of MBR membrane module top forms MBR membrane reaction area, and the water inlet of MBR membrane play water pump passes through pipeline and MBR membrane reaction area intercommunication, and the delivery port of MBR membrane play water pump passes through the pipeline and is connected with multi-media filter's water inlet.
6. The air flotation, MBR and multi-media filtration integrated cigarette factory sewage treatment process equipment as claimed in claim 5, wherein a containing chamber is formed between the aeration tank and the multi-media filter, and the aeration fan and the MBR membrane water outlet pump are both arranged in the containing chamber;
and a water inlet of the MBR membrane reaction part is arranged on the side wall between an aeration pipe of the aeration tank and the MBR membrane component.
7. The integrated air flotation, MBR and multi-media filtration cigarette factory sewage treatment process equipment as claimed in claim 1, wherein the multi-media filter is internally provided with filter materials, the filter materials at least comprise four layers, the lowest layer is a gravel supporting layer with the particle size of 32-16mm, the middle layer is a coarse sand layer with the particle size of 16-8mm, the upper layer is a fine sand layer with the particle size of 4-2mm, and the uppermost layer is a smokeless coal layer with the particle size of 4-2 mm.
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