CN112939343B - Integrated sewage treatment system adopting double-membrane method - Google Patents
Integrated sewage treatment system adopting double-membrane method Download PDFInfo
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- CN112939343B CN112939343B CN202110126186.5A CN202110126186A CN112939343B CN 112939343 B CN112939343 B CN 112939343B CN 202110126186 A CN202110126186 A CN 202110126186A CN 112939343 B CN112939343 B CN 112939343B
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- 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
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
Abstract
The invention relates to a sewage treatment system, in particular to an integrated double-membrane sewage treatment system. An integrated sewage treatment system by a double-membrane method, comprising: the system comprises a plurality of primary biological membrane treatment units, a plurality of secondary ultrafiltration membrane treatment units, a sludge collecting unit for collecting sludge, an emergency water collecting unit, a control system for controlling the operation of the whole system and an emergency pipeline, wherein the primary biological membrane treatment units are arranged in sequence; the secondary ultrafiltration membrane treatment units are positioned behind the primary biological membrane treatment unit and are arranged in sequence; one end of the emergency pipeline is connected to the emergency water collecting unit, and the plurality of first-level biomembrane processing units and the plurality of second-level ultrafiltration membrane processing units are connected with the emergency pipeline through maintenance emptying pipes. The invention has the advantages of effectively improving the sewage treatment efficiency, enhancing the sewage treatment effect, reducing the area required by the whole construction and the like.
Description
Technical Field
The invention relates to a sewage treatment system, in particular to an integrated double-membrane sewage treatment system.
Background
Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. The existing sewage treatment system adopts a biological method for treatment, and utilizes the metabolism function of microorganisms to decompose and oxidize organic matters in a dissolved or colloidal state in sewage into stable inorganic substances, so that the sewage is purified. However, the treatment method has the defects of single treatment on the sewage, limited treatment degree, low treatment capacity for some engineering projects and pollution to the environment to a certain degree. Still another type of treatment is a method in which biological and chemical methods are integrated, and dissolved or colloidal substances of sewage are treated or recovered by chemical reaction at the same time as the biological treatment. The combination of the two can improve the treatment effect, but the treatment effect is limited for the sewage with high requirement on the quality of discharged effluent, and certain influence is brought to the construction of cities and villages.
Disclosure of Invention
The invention mainly aims at the problems and provides an integrated double-membrane sewage treatment system which can effectively improve the sewage treatment efficiency, enhance the sewage treatment effect and reduce the area required by the whole construction.
The purpose of the invention is mainly realized by the following scheme: an integrated dual membrane process wastewater treatment system comprising: the system comprises a plurality of primary biological membrane treatment units, a plurality of secondary ultrafiltration membrane treatment units, a sludge collecting unit for collecting sludge, an emergency water collecting unit, a control system for controlling the operation of the whole system and an emergency pipeline, wherein the primary biological membrane treatment units are arranged in sequence; the secondary ultrafiltration membrane treatment units are positioned behind the primary biological membrane treatment unit and are arranged in sequence; one end of the emergency pipeline is connected to the emergency water collecting unit, and the plurality of first-level biomembrane processing units and the plurality of second-level ultrafiltration membrane processing units are connected with the emergency pipeline through maintenance emptying pipes. The sewage preferentially passes through the first-level biomembrane treatment unit, the plurality of first-level biomembrane treatment units are sequentially communicated, the sewage is subjected to biological method treatment through the plurality of first-level biomembrane treatment units one by one, then enters the plurality of second-level ultrafiltration membrane treatment units one by one, and is treated layer by the plurality of second-level ultrafiltration membrane treatment units. A plurality of one-level biomembrane processing unit and a plurality of second grade milipore filter processing unit can be integrated in a box, realize the modularization equipment intercommunication, improve and integrate and standardize, reduce entire system's occupation of land space, can assemble in advance, transport again to the field installation, construction cycle is short, simple to operate. The control system can adopt PLC control, or adopt current procedure to control the switching of relevant equipment, improves intellectuality. The sludge collecting unit is used for separating and collecting the sludge generated in each link, so that the sludge is convenient to discharge. The one end of emergent pipeline is connected in emergent water-collecting unit department, and a plurality of one-level biomembrane processing unit and a plurality of second grade milipore filter processing unit all are connected with emergent pipeline through overhauing the evacuation pipe, and at the system maintenance in-process, can carry out evacuation and washing to inside, guarantee the stability of equipment operation. The whole system adopts a plurality of one-level biomembrane processing units and a plurality of second grade milipore filter processing units that communicate in proper order, realizes multi-stage treatment, improves sewage treatment's efficiency, and the reinforcing treatment effect can realize modularization, standardization and integration moreover, reduces occupation of land space, realizes the equipment in advance, improves site operation's efficiency, shortens construction cycle.
Preferably, the system also comprises a pretreatment unit, the pretreatment unit comprises a suspended matter removal unit and a water quality homogenization and regulation unit, an aeration fan is arranged in the water quality homogenization and regulation unit, and the other end of the emergency pipeline is connected with the water quality homogenization and regulation unit. Sewage can get into one-level biomembrane processing unit after the pretreatment unit earlier, and in the pretreatment unit, the unit can be scraped sewage surface suspended solid to the suspended solid removal unit, and the homogeneity of sewage is adjusted to rethread water quality homogenization regulating element realization, aerates inside through the aeration fan at water quality homogenization regulating element, improves area of contact and homogeneity effect. When the internal pressure of the pretreatment unit is overlarge and an emergency accident occurs, the water quality homogenizing and adjusting unit overflows and discharges through an emergency pipeline. The sewage is subjected to priority treatment through the pretreatment unit and then enters the primary biomembrane treatment unit, so that the treatment effect is improved.
Preferably, the device also comprises a water production system, a backwashing system connected with the water production system and a self-cleaning backwashing pipe connected with the backwashing system, wherein the self-cleaning backwashing pipe sequentially penetrates through a plurality of secondary ultrafiltration membrane treatment units. The water production system can enable an external water source to enter the self-cleaning backwashing pipe through the backwashing system, and the self-cleaning backwashing pipe is used for backwashing each unit, so that self-cleaning of the secondary ultrafiltration membrane treatment unit is realized, and periodic maintenance is facilitated.
Preferably, the device also comprises a dosing device, wherein a dosing pipe is connected to the dosing device, and the dosing pipe sequentially penetrates through the plurality of secondary ultrafiltration membrane treatment units. The chemical agent can be filled into the chemical agent in the chemical adding pipe, all the chemical agents are added according to the use condition of the second-stage ultrafiltration membrane, and the chemical adding pipe sequentially penetrates through the plurality of second-stage ultrafiltration membrane treatment units, so that the treatment integration of the chemical method is realized.
Preferably, the sludge treatment device further comprises a water outlet pipe, the water outlet pipe is connected with the sludge collecting unit, and a disinfection device is arranged on the water outlet pipe. The outlet pipe is located collection mud unit, utilizes degassing unit to disinfect the sewage mud who collects in the collection mud unit, and the disinfection is outwards discharged after according with emission standard, guarantees to discharge stability.
Preferably, the device also comprises an aerobic aeration device, wherein the aerobic aeration device is connected with an aerobic aeration pipe, and the aerobic aeration pipe sequentially penetrates through the plurality of primary biomembrane treatment units and the plurality of secondary ultrafiltration membrane treatment units. The aerobic aeration device charges oxygen into the aerobic aeration pipe, and the aerobic aeration pipe charges oxygen into the plurality of primary biomembrane treatment units and the plurality of secondary ultrafiltration membrane treatment units one by one, so that the biological activity is improved, and the sewage treatment efficiency is further improved.
Preferably, the emergency water collecting unit is provided with a sewage draining pipe. The emergency water collecting unit is provided with a blow-off pipe, and the blow-off pipe is utilized for carrying out emergency micro blow-off, so that equipment damage is avoided.
Preferably, the plurality of primary biological membrane treatment units are respectively an anaerobic membrane unit, an anoxic membrane unit, an aerobic membrane unit and a flocculation phosphorus removal unit, and biological fillers are arranged in the anaerobic membrane unit, the anoxic membrane unit and the aerobic membrane unit. The primary biomembrane treatment unit consists of an anaerobic membrane unit, an anoxic membrane unit, an aerobic membrane unit and a flocculation phosphorus removal unit which are sequentially connected, and one or more units are selected to be combined according to different sewage characteristics, so that the treatment efficiency is improved, and the treatment effect is enhanced.
Preferably, the plurality of secondary ultrafiltration membrane treatment units are respectively an MBR membrane treatment unit and a membrane backwashing unit. The second-stage ultrafiltration membrane treatment unit consists of an MBR membrane treatment unit and a membrane backwashing unit which are communicated one by one, and the MBR membrane treatment unit is used for realizing further biological reaction, increasing the contact area of sewage and a biological membrane and improving the treatment effect.
Preferably, the MBR membrane treatment unit comprises a membrane cavity body for sewage treatment, a water inlet pipe and a twisting device for relieving pressure and oscillating the inlet water, wherein the twisting device is matched with the end part of the water inlet pipe. When sewage is discharged from the port of the water inlet pipe, the twisting device is used for further twisting the mixed liquid of the sewage, and further grinding and crushing of the sewage are realized.
Preferably, the twisting device comprises a guide ball arranged on the inner bottom surface of the film cavity body, a flow guide gap is arranged between the end part of the water inlet pipe and the outer surface of the guide ball, a containing cavity is arranged inside the guide ball, a ball head is arranged in the containing cavity, the ball head is in threaded connection with the bottom surface of the tank body through an adjusting rod, an adjusting hole for the passing through of the adjusting rod is arranged on the guide ball, an elastic sealing ring is arranged at the adjusting hole, an adjusting spring is arranged inside one end, close to the guide ball, of the water inlet pipe, one end of the adjusting spring is positioned on the guide ball, the other end of the adjusting spring is fixedly connected with a pressure ring, and the pressure ring is in sliding connection with the water inlet pipe; the guide ball, the ball head and the adjusting rod are arranged eccentrically with the axis of the water inlet pipe; both ends of adjusting spring all are provided with location portion, and location portion forms for the laminating of two strands of helices, and adjusting spring's middle part is provided with the portion that became invalid, and the portion that became invalid forms for the laminating of at least three strands of helices.
Sewage after one-level biomembrane processing unit handles enters into MBR's membrane chamber by the inlet tube originally internally, at this in-process, exert pressure to the pressure ring in the inlet tube when sewage reachs the inlet tube tip, pressure ring extrusion regulating spring, the location portion at regulating spring both ends can increase the stability at both ends, regulating spring middle part pressurized deformation, the regulating spring middle part has the portion of inefficacy, the portion of inefficacy is formed by the laminating of at least three strands of helices, there is deformable clearance promptly between the three strands of helices of the portion of inefficacy department, elasticity transmits the short time inefficacy when the portion of inefficacy, downward transmission again, make the sewage of flowing through regulating spring department form vortex and vibration, vortex and vibration can avoid mud fluid or fluid to glue regulating spring and inlet tube inner wall, prevent that inlet tube tip department from blockking up, and can make the granule vibration filth of adhesion in the pipeline vibrate the filth and smash. When the sewage reaches the free end of the water inlet pipe, the sewage can be guided by the guide ball and slowly enters the membrane cavity body along the flow guide gap between the guide ball and the end part of the water inlet pipe, the guide ball and the water inlet pipe are eccentrically arranged, namely, the sewage pressure on the surface of the guide ball is not uniform, and the inlet pressure of the sewage has certain micro fluctuation, because the ball head is arranged at the bottom of the guide ball, the guide ball can swing along the ball head in a small range under the impact of uneven and micro-fluctuating sewage, the swing of the guide ball can change each position of the flow guide gap, the change of the gap is utilized to extrude and crush the agglomerated sludge, and further the secondary twisting and crushing of the adhered particles formed in the pipeline are realized, so as to increase the contact area of the sludge with microorganisms and organic matters in the subsequent treatment process, improve the treatment efficiency and prolong the service life of the MBR membrane. When the equipment is regularly maintained, the tank body is emptied, the adjusting rod drives the guide ball to move up and down, and then the adjusting spring and the pressure ring are driven to move up and down in the water inlet pipe, so that the inner wall of the end part of the water inlet pipe is cleaned.
Therefore, the integrated double-membrane sewage treatment system has the following advantages: the whole system adopts a plurality of one-level biomembrane processing units and a plurality of second grade milipore filter processing units that communicate in proper order, realizes multi-stage treatment, improves sewage treatment's efficiency, and the reinforcing treatment effect can realize modularization, standardization and integration moreover, reduces occupation of land space, realizes the equipment in advance, improves site operation's efficiency, shortens construction cycle.
Drawings
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic diagram of an embodiment of the present invention;
FIG. 3 is a partial enlarged view of the water inlet of the membrane treatment unit.
Illustration of the drawings: 1-suspended matter removing unit, 2-water quality homogenizing and adjusting unit, 3-anaerobic membrane unit, 4-anoxic membrane unit, 5-aerobic membrane unit, 6-flocculating and dephosphorizing unit, 7-membrane processing unit, 8-membrane backwashing unit, 9-sludge collecting unit, 10-emergency water collecting unit, 11-control system, 12-emergency pipeline, 13-water producing system, 14-backwashing system, 15-self-cleaning backwashing pipe, 16-dosing device, 17-dosing pipe, 18-aerobic aeration device, 19-aerobic aeration pipe, 20-water outlet pipe, 201-sterilizing device, 21-membrane cavity body, 22-water inlet pipe, 32-adjusting spring, 33-positioning part, 34-failure part and 35-pressure ring, 36-guide ball, 37-guide gap, 38-ball head, 39-adjusting rod, 40-accommodating cavity, 41-elastic sealing ring and 44-elastic filler.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example 1: as shown in fig. 1 and 2, an integrated sewage treatment system by a double membrane method comprises: the system comprises a plurality of primary biological membrane treatment units, a plurality of secondary ultrafiltration membrane treatment units, a sludge collecting unit 9 for collecting sludge, an emergency water collecting unit 10, a control system 11 for controlling the operation of the whole system and an emergency pipeline 12, wherein the primary biological membrane treatment units are arranged in sequence; the secondary ultrafiltration membrane treatment units are positioned behind the primary biological membrane treatment unit and are arranged in sequence; one end of the emergency pipeline is connected to the emergency water collecting unit, and the plurality of first-level biomembrane processing units and the plurality of second-level ultrafiltration membrane processing units are connected with the emergency pipeline through maintenance emptying pipes. Still include the pretreatment unit, the pretreatment unit includes that the suspended solid removes unit 1 and quality of water homogenization regulating unit 2, and quality of water homogenization regulating unit is inside to be provided with the aeration fan, and the other end and the quality of water homogenization regulating unit of emergent pipeline link to each other. The device also comprises a water production system 13, a backwashing system 14 connected with the water production system and a self-cleaning backwashing pipe 15 connected with the backwashing system, wherein the self-cleaning backwashing pipe sequentially penetrates through a plurality of secondary ultrafiltration membrane treatment units. The device also comprises a dosing device 16, wherein a dosing pipe 17 is connected to the dosing device, and the dosing pipe sequentially penetrates through the plurality of secondary ultrafiltration membrane treatment units. The sludge treatment device further comprises a water outlet pipe 20, the water outlet pipe is connected with the sludge collecting unit, and a disinfection device 201 is arranged on the water outlet pipe. The device also comprises an aerobic aeration device 18, wherein the aerobic aeration device is connected with an aerobic aeration pipe 19, and the aerobic aeration pipe sequentially penetrates through a plurality of first-stage biomembrane treatment units and a plurality of second-stage ultrafiltration membrane treatment units. And a sewage discharge pipe is arranged on the emergency water collecting unit. The plurality of first-stage biomembrane processing units are respectively an anaerobic membrane unit 3, an anoxic membrane unit 4, an aerobic membrane unit 5 and a flocculation phosphorus removal unit 6, and biological fillers are arranged in the anaerobic membrane unit, the anoxic membrane unit and the aerobic membrane unit. The dry secondary ultrafiltration membrane treatment units are respectively a membrane treatment unit 7 and a membrane backwashing unit 8. The elastic filler 44 is arranged in the primary processing membrane unit.
The sewage preferentially passes through the first-level biomembrane treatment unit, the plurality of first-level biomembrane treatment units are sequentially communicated, the sewage is subjected to biological method treatment through the plurality of first-level biomembrane treatment units one by one, then enters the plurality of second-level ultrafiltration membrane treatment units one by one, and is treated layer by the plurality of second-level ultrafiltration membrane treatment units. A plurality of one-level biomembrane processing unit and a plurality of second grade milipore filter processing unit can be integrated in a box, realize the modularization equipment intercommunication, improve and integrate and standardize, reduce entire system's occupation of land space, can assemble in advance, transport again to the field installation, construction cycle is short, simple to operate. The control system can adopt PLC control, or adopt current procedure to control the switching of relevant equipment, improves intellectuality. The sludge collecting unit is used for separating and collecting the sludge generated in each link, so that the sludge is convenient to discharge. The one end of emergent pipeline is connected in emergent water-collecting unit department, and a plurality of one-level biomembrane processing unit and a plurality of second grade milipore filter processing unit all are connected with emergent pipeline through overhauing the evacuation pipe, and at the system maintenance in-process, can carry out evacuation and washing to inside, guarantee the stability of equipment operation. The whole system adopts a plurality of one-level biomembrane processing units and a plurality of second grade milipore filter processing units that communicate in proper order, realizes multi-stage treatment, improves sewage treatment's efficiency, and the reinforcing treatment effect can realize modularization, standardization and integration moreover, reduces occupation of land space, realizes the equipment in advance, improves site operation's efficiency, shortens construction cycle. Sewage can get into one-level biomembrane processing unit after the pretreatment unit earlier, and in the pretreatment unit, the unit can be scraped sewage surface suspended solid to the suspended solid removal unit, and the homogeneity of sewage is adjusted to rethread water quality homogenization regulating element realization, aerates inside through the aeration fan at water quality homogenization regulating element, improves area of contact and homogeneity effect. When the internal pressure of the pretreatment unit is overlarge and an emergency accident occurs, the water quality homogenizing and adjusting unit overflows and discharges through an emergency pipeline. The sewage is subjected to priority treatment through the pretreatment unit and then enters the primary biomembrane treatment unit, so that the treatment effect is improved. The water production system can enable an external water source to enter the self-cleaning backwashing pipe through the backwashing system, and the self-cleaning backwashing pipe is used for backwashing each unit, so that self-cleaning of the secondary ultrafiltration membrane treatment unit is realized, and periodic maintenance is facilitated. The chemical agent can be filled into in the dosing pipe to the dosing device, required agent is added according to the sewage condition of difference, and the dosing pipe runs through a plurality of second grade milipore filter processing units in proper order, realizes chemical process's processing integration. The outlet pipe is located collection mud unit, utilizes degassing unit to disinfect the sewage mud who collects in the collection mud unit, and the disinfection is outwards discharged after according with emission standard, guarantees to discharge stability. The aerobic aeration device charges oxygen into the aerobic aeration pipe, and the aerobic aeration pipe charges oxygen into the plurality of primary biomembrane treatment units and the plurality of secondary ultrafiltration membrane treatment units one by one, so that the biological activity is improved, and the sewage treatment efficiency is further improved. The emergency water collecting unit is provided with a blow-off pipe, and the blow-off pipe is utilized for carrying out emergency micro blow-off, so that equipment damage is avoided. The primary biomembrane treatment unit consists of an anaerobic membrane unit, an anoxic membrane unit, an aerobic membrane unit and a flocculation phosphorus removal unit which are sequentially connected, and one or more units are selected to be combined according to different sewage characteristics, so that the treatment efficiency is improved, and the treatment effect is enhanced. The secondary ultrafiltration membrane treatment unit consists of a membrane treatment unit and a membrane backwashing unit which are communicated one by one, and the efficiency is further improved by utilizing a physical method to carry out filtration and separation and matching with a biological method and a chemical method. The secondary ultrafiltration membrane treatment unit mainly comprises an MBR membrane treatment unit and a membrane backwashing unit.
Example 2: the present embodiment has substantially the same structure as embodiment 1, except that the MBR membrane treatment unit includes a membrane chamber body 21 for sewage treatment, a water inlet pipe 22, and a twisting device for decompressing and oscillating the inlet water, and the twisting device is fitted to the end of the water inlet pipe. The twisting device comprises a guide ball 36 arranged on the inner bottom surface of a film cavity body, a flow guide gap 37 is arranged between the end part of a water inlet pipe and the outer surface of the guide ball, a containing cavity 40 is arranged inside the guide ball, a ball head 38 is arranged in the containing cavity, the ball head is in threaded connection with the bottom surface of the tank body through an adjusting rod 39, an adjusting hole for the penetration of the adjusting rod is arranged on the guide ball, an elastic sealing ring 41 is arranged at the adjusting hole, an adjusting spring 32 is arranged inside one end of the water inlet pipe close to the guide ball, one end of the adjusting spring is positioned on the guide ball, the other end of the adjusting spring is fixedly connected with a pressure ring 35, and the pressure ring is in sliding connection with the water inlet pipe; the guide ball, the ball head and the adjusting rod are arranged eccentrically with the axis of the water inlet pipe; both ends of the adjusting spring are provided with positioning portions 33, the positioning portions are formed by fitting two strands of spiral lines, failure portions 34 are arranged in the middle of the adjusting spring, and the failure portions are formed by fitting at least three strands of spiral lines.
When sewage is discharged from the port of the water inlet pipe, the twisting device is used for further twisting the mixed liquid of the sewage, and further grinding and crushing of the sewage are realized. Sewage after one-level biomembrane processing unit handles enters into MBR's membrane chamber by the inlet tube originally internally, at this in-process, exert pressure to the pressure ring in the inlet tube when sewage reachs the inlet tube tip, pressure ring extrusion regulating spring, the location portion at regulating spring both ends can increase the stability at both ends, regulating spring middle part pressurized deformation, the regulating spring middle part has the portion of inefficacy, the portion of inefficacy is formed by the laminating of at least three strands of helices, there is deformable clearance promptly between the three strands of helices of the portion of inefficacy department, elasticity transmits the short time inefficacy when the portion of inefficacy, downward transmission again, make the sewage of flowing through regulating spring department form vortex and vibration, vortex and vibration can avoid mud fluid or fluid to glue regulating spring and inlet tube inner wall, prevent that inlet tube tip department from blockking up, and can make the granule vibration filth of adhesion in the pipeline vibrate the filth and smash. When the sewage reaches the free end of the water inlet pipe, the sewage can be guided by the guide ball and slowly enters the membrane cavity body along the flow guide gap between the guide ball and the end part of the water inlet pipe, the guide ball and the water inlet pipe are eccentrically arranged, namely, the sewage pressure on the surface of the guide ball is not uniform, and the inlet pressure of the sewage has certain micro fluctuation, because the ball head is arranged at the bottom of the guide ball, the guide ball can swing along the ball head in a small range under the impact of uneven and micro-fluctuating sewage, the swing of the guide ball can change each position of the flow guide gap, the change of the gap is utilized to extrude and crush the agglomerated sludge, and further the secondary twisting and crushing of the adhered particles formed in the pipeline are realized, so as to increase the contact area of the sludge with microorganisms and organic matters in the subsequent treatment process, improve the treatment efficiency and prolong the service life of the MBR membrane. When the equipment is regularly maintained, the tank body is emptied, the adjusting rod drives the guide ball to move up and down, and then the adjusting spring and the pressure ring are driven to move up and down in the water inlet pipe, so that the inner wall of the end part of the water inlet pipe is cleaned.
It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (7)
1. An integrated sewage treatment system by a double-membrane method is characterized by comprising:
the primary biological membrane treatment units are arranged in sequence;
the secondary ultrafiltration membrane treatment units are positioned behind the primary biological membrane treatment unit and are arranged in sequence;
a sludge collecting unit for collecting sludge;
an emergency water collecting unit;
the control system is used for controlling the operation of the whole system;
one end of the emergency pipeline is connected to the emergency water collecting unit, and the plurality of primary biological membrane processing units and the plurality of secondary ultrafiltration membrane processing units are connected with the emergency pipeline through maintenance emptying pipes;
the secondary ultrafiltration membrane treatment units are respectively an MBR membrane treatment unit and a membrane backwashing unit;
the MBR membrane treatment unit comprises a membrane cavity body for sewage treatment, a water inlet pipe and a twisting device for slowly pressing and oscillating inlet water, and the twisting device is matched with the end part of the water inlet pipe;
the twisting device comprises a guide ball arranged on the inner bottom surface of a film cavity body, a flow guide gap is arranged between the end part of a water inlet pipe and the outer surface of the guide ball, a containing cavity is arranged inside the guide ball, a ball head is arranged in the containing cavity, the ball head is in threaded connection with the bottom surface of a tank body through an adjusting rod, an adjusting hole for the penetration of the adjusting rod is arranged on the guide ball, an elastic sealing ring is arranged at the adjusting hole, an adjusting spring is arranged inside one end, close to the guide ball, of the water inlet pipe, one end of the adjusting spring is positioned on the guide ball, the other end of the adjusting spring is fixedly connected with a pressure ring, and the pressure ring is in sliding connection with the water inlet pipe; the guide ball, the ball head and the adjusting rod are arranged eccentrically with the axis of the water inlet pipe; positioning parts are arranged at two ends of the adjusting spring and formed by laminating two strands of spiral lines, and a failure part is arranged in the middle of the adjusting spring and formed by laminating at least three strands of spiral lines; the plurality of primary biomembrane processing units are respectively an anaerobic membrane unit, an anoxic membrane unit, an aerobic membrane unit and a flocculation phosphorus removal unit, and biological fillers are arranged in the anaerobic membrane unit, the anoxic membrane unit and the aerobic membrane unit.
2. The integrated sewage treatment system adopting the double-membrane method according to claim 1, further comprising a pretreatment unit, wherein the pretreatment unit comprises a suspended matter removal unit and a water quality homogenization and regulation unit, an aeration fan is arranged in the water quality homogenization and regulation unit, and the other end of the emergency pipeline is connected with the water quality homogenization and regulation unit.
3. The integrated double-membrane sewage treatment system of claim 1, further comprising a water production system, a backwashing system connected with the water production system and a self-cleaning backwash pipe connected with the backwashing system, wherein the self-cleaning backwash pipe sequentially penetrates through a plurality of secondary ultrafiltration membrane treatment units.
4. The integrated double-membrane sewage treatment system according to claim 1, further comprising a dosing device, wherein the dosing device is connected with a dosing pipe, and the dosing pipe sequentially penetrates through the plurality of secondary ultrafiltration membrane treatment units.
5. The integrated double-membrane sewage treatment system according to claim 1, further comprising a water outlet pipe connected to the sludge collection unit, the water outlet pipe being provided with a disinfection device.
6. The integrated sewage treatment system adopting the double-membrane process as claimed in claim 1, further comprising an aerobic aeration device, wherein the aerobic aeration device is connected with an aerobic aeration pipe, and the aerobic aeration pipe sequentially penetrates through the plurality of primary biological membrane treatment units and the plurality of secondary ultrafiltration membrane treatment units.
7. An integrated dual membrane sewage treatment system according to claim 1 or 2 or 3 or 4 or 5 or 6 wherein said emergency water collection unit is provided with a sewage drain.
Priority Applications (1)
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| KR20080043614A (en) * | 2006-11-14 | 2008-05-19 | 주식회사 나노에프엔씨 | Wastewater treatment apparatus and method thereof using membrane bio reactor with reduced sludge production |
| CN201999829U (en) * | 2010-11-30 | 2011-10-05 | 广东森洋环境保护工程设备有限公司 | Distributed sewage treatment system for rural life |
| CN109293128A (en) * | 2018-08-06 | 2019-02-01 | 浙江筑原生态科技有限公司 | A kind of Sewage from Ships processing system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20080043614A (en) * | 2006-11-14 | 2008-05-19 | 주식회사 나노에프엔씨 | Wastewater treatment apparatus and method thereof using membrane bio reactor with reduced sludge production |
| CN201999829U (en) * | 2010-11-30 | 2011-10-05 | 广东森洋环境保护工程设备有限公司 | Distributed sewage treatment system for rural life |
| CN109293128A (en) * | 2018-08-06 | 2019-02-01 | 浙江筑原生态科技有限公司 | A kind of Sewage from Ships processing system |
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