CN213433878U - A milipore filter three-section washs automatic operation equipment for doing wet landfill leachate - Google Patents
A milipore filter three-section washs automatic operation equipment for doing wet landfill leachate Download PDFInfo
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- CN213433878U CN213433878U CN202021858951.XU CN202021858951U CN213433878U CN 213433878 U CN213433878 U CN 213433878U CN 202021858951 U CN202021858951 U CN 202021858951U CN 213433878 U CN213433878 U CN 213433878U
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses an milipore filter three-section washing automatic operation equipment for wet and dry landfill leachate belongs to the water treatment field, including MBR pond, clean water tank, milipore filter and automatic control device, first three-way pipe links to each other with MBR pond and clean water tank respectively, first three-way pipe links to each other with the second three-way pipe, the second three-way pipe links to each other with fifth three-way pipe and third three-way pipe respectively, the third three-way pipe links to each other with the milipore filter, the third three-way pipe links to each other with the sixth three-way pipe, the sixth three-way pipe links to each other with MBR pond and fifth three-way pipe respectively, the fifth three-way pipe links to each other with the fourth three-way pipe, the fourth three-way pipe links to each other with the milipore filter, the fourth three-way pipe links. The utility model discloses a three-section is washd: the first-stage washing is forward one-time washing, the second-stage washing is forward circulating washing, the third-stage washing is reverse one-time washing, the ultrafiltration membrane is thoroughly washed after the third-stage washing, the membrane flux recovery efficiency is high, and the membrane service life is prolonged.
Description
Technical Field
The utility model relates to a water treatment field, concretely relates to milipore filter three-section washing automatic operation equipment for doing wet landfill leachate.
Background
Nowadays, China enters a new period of economic development, and the deterioration trend of the water environment is restrained but not radically improved. In response to the general guidelines for strengthening the construction of ecological civilization, there is a trend towards the issue of more stringent wastewater management and discharge standards on both national and local levels. From the whole water treatment field, the traditional treatment process has a plurality of defects, and the use of the membrane technology can greatly reduce the discharge amount of pollutants, in particular to industrial wastewater generated in the fields of printing and dyeing, leather, electroplating, coking, brewing and the like which are difficult to treat. In the existing sewage treatment engineering, after an ultrafiltration membrane is often used for biochemical treatment, advanced treatment is carried out on a water body to improve the water quality, the stability and reliability of effluent are further improved, and the chemical treatment medicament cost, the equipment purchase and operation maintenance cost and the occupied space are also reduced. Although ultrafiltration membrane treatment has many advantages as described above, membrane fouling limits the further spread and application of ultrafiltration.
The membrane pollution refers to the phenomenon that the water yield and separation characteristics of the membrane are greatly reduced, and the reason is that substances such as particles, colloids and the like in a solution are adsorbed or deposited on the surface of the membrane or in membrane pores after physical, chemical, biochemical and other actions, so that the pore diameter of the membrane is reduced or blocked. Generally, membrane fouling is classified into two types, reversible fouling and irreversible fouling. Reversible pollution can be recovered after being treated by physical methods such as air washing, water washing and the like; irreversible contamination must be restored by chemical cleaning.
In the practical application of an ultrafiltration membrane system, the membrane pollution can be effectively slowed down by periodic physical cleaning, the chemical cleaning frequency can be reduced by optimizing the physical cleaning condition, the cleaning cost is reduced, and the stability of the membrane performance is kept. The physical cleaning method commonly used at present is a one-stage positive flushing or back flushing.
Patent CN111036085A discloses a physical cleaning system and a cleaning method for a hollow fiber ultrafiltration membrane component, wherein a backwashing circulating pump, a backwashing filter and a backwashing electromagnetic valve are arranged on a backwashing water pipeline, and backwashing is carried out on the ultrafiltration system by utilizing reverse osmosis water. Patent CN203678261U discloses an ultrafiltration backwashing device, which is provided with an ultrafiltration water production tank, an ultrafiltration backwashing pump, an ultrafiltration membrane and the like, and uses ultrafiltration water production and tap water to perform backwashing on an ultrafiltration system. The prior ultrafiltration membrane system still has the following disadvantages in operation and cleaning:
1. chemical cleaning can generate pollutants, and if the pollutants are discharged into the environment, the pollutants can cause environmental pollution;
2. the existing physical cleaning method mainly comprises a section of forward or reverse cleaning, and the cleaning effect on pollutants on the surface of the membrane is not ideal;
3. various cleaning methods exist in the prior art, but an overall control system for the safe and orderly operation of the ultrafiltration system is lacking.
SUMMERY OF THE UTILITY MODEL
For solving the above-mentioned problem that exists among the prior art, the utility model provides an milipore filter three-section washs automatic operation equipment for doing wet landfill leachate.
The technical scheme of the utility model as follows: an ultrafiltration membrane three-section cleaning automatic operation device for dry and wet garbage leachate comprises an MBR tank, a clean water tank, an ultrafiltration membrane and an automatic control device, wherein a first three-way pipe is arranged between the MBR tank and the clean water tank, one horizontal end of the first three-way pipe is respectively connected with the MBR tank and the clean water tank, the vertical end of the first three-way pipe is connected with the vertical end of a second three-way pipe, the horizontal end of the second three-way pipe is respectively connected with the horizontal end of a fifth three-way pipe and one vertical end of a third three-way pipe, the other horizontal end of the third three-way pipe is connected with the ultrafiltration membrane, the other vertical end of the third three-way pipe is connected with the vertical end of a sixth three-way pipe, the horizontal end of the sixth three-way pipe is respectively connected with the MBR tank and the vertical end of the fifth three-way pipe, the other horizontal end of the fifth three-way pipe is connected with the horizontal end of a fourth three-way pipe, and the other horizontal end of the fourth three-, and the vertical end of the fourth three-way pipe is connected with the clean water tank.
And a water inlet pump, a nitrifying liquid water inlet valve and a first check valve are sequentially arranged between the MBR tank and the first three-way pipe.
And a second check valve, a clean water inlet valve and a cleaning pump are sequentially arranged between the first three-way pipe and the clean water tank.
And a high-pressure circulating pump, a first operating valve and a third check valve are sequentially arranged between the first three-way pipe and the third three-way pipe.
And a fifth check valve and a third reflux valve are sequentially arranged between the clean water tank and the fourth three-way valve.
A second operation valve is arranged between the second three-way pipe and the fifth three-way pipe, a second return valve is arranged between the third three-way pipe and the sixth three-way pipe, a first return valve is arranged between the fifth three-way pipe and the sixth three-way pipe, and a fourth return valve is arranged between the sixth three-way pipe and the MBR tank.
The clean water tank is connected with a clean water replenishing valve, and a liquid level meter is arranged in the clean water tank.
And a water inlet flow meter and a water inlet pressure sensor are arranged between the third three-way pipe and the ultrafiltration membrane.
And a concentrated solution flowmeter and a concentrated solution pressure sensor are arranged between the fourth three-way pipe and the ultrafiltration membrane.
And the ultrafiltration membrane is connected with a water production pressure sensor and a water production valve.
The utility model has the advantages that: three-section washing is adopted, wherein the first-section washing is positive-direction one-time washing, sludge on the surface of the ultrafiltration membrane can be washed and flows back to the MBR tank, and the sludge amount in the MBR tank is ensured; the second-stage washing is forward circulating washing, and residual mud blocks on the surface of the ultrafiltration membrane are further washed through long-time circulating washing; the three-stage washing is reverse one-time washing, and can wash out suspended particles, colloids, bacteria and macromolecular organic substances fastened on the surface of the ultrafiltration membrane, so as to further wash the ultrafiltration membrane; after the three-section cleaning process, the ultrafiltration membrane is thoroughly cleaned, the efficiency of recovering the flux in the membrane is high, the fouling of the ultrafiltration membrane is reduced, and the service life of the membrane is prolonged. The control device can effectively ensure the normal and stable operation of the ultrafiltration membrane system and prolong the service life of the membrane.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a control flow diagram of the present invention;
in the figure: 1-MBR tank, 2-clean water tank, 3-ultrafiltration membrane, 4-water inlet pump, 5-cleaning pump, 6-high pressure circulating pump, 7-level gauge, 8-water inlet pressure sensor, 9-water inlet flowmeter, 10-nitrified liquid water inlet valve, 11-clean water inlet valve, 12-first operation valve, 13-second operation valve, 14-first return valve, 15-second return valve, 16-third return valve, 17-water production valve, 18-clean water replenishing valve, 19-first three-way pipe, 20-second three-way pipe, 21-third three-way pipe, 22-fourth three-way pipe, 23-fifth three-way pipe, 24-sixth three-way pipe, 25-concentrated liquid pressure sensor, 26-concentrated liquid flowmeter, 27-first check valve, 28-second check valve, 29-third check valve, 30-fourth check valve, 31-fifth check valve, 32-water production pressure sensor, 33-automatic control device.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1, the ultrafiltration membrane three-section cleaning automatic operation equipment for the dry and wet landfill leachate comprises an MBR tank 1, a clean water tank 2, an ultrafiltration membrane 3 and an automatic control device 33, wherein the MBR tank 1 and the clean water tank 2 are connected through a conveying pipe, and the middle part of the conveying pipe is provided with a first three-way pipe 19; the horizontal end of the first three-way pipe 19 is respectively connected with the MBR tank 1 and the clean water tank 2 through a conveying pipe, a water inlet pump 4, a nitrification liquid water inlet valve 10 and a first check valve 27 are arranged on the conveying pipe connected with the MBR tank 1, and a cleaning pump 5, a clean water inlet valve 11 and a second check valve 28 are arranged on the conveying pipe connected with the clean water tank 2; a liquid level meter 7 is arranged in the clean water tank 2 and used for controlling the liquid level; the upper end of the clean water tank 2 is provided with a pipeline for supplementing clean water, and the pipeline is provided with a clean water supplementing valve 18; the vertical end of the first three-way pipe 19 is connected with the vertical end of the second three-way pipe 20 through a conveying pipe; one section of the horizontal end of the second three-way pipe 20 is connected with the upper end of the vertical end of a third three-way pipe 21 through a conveying pipe, and the conveying pipe is provided with a high-pressure circulating pump 6, a first operating valve 12 and a third check valve; the other end of the horizontal end of the second three-way pipe 20 is connected with the horizontal end of a fifth three-way pipe 23 through a conveying pipe, and a second running valve 13 is arranged on the conveying pipe; the horizontal end of the third three-way pipe 21 is connected with a liquid inlet of the ultrafiltration membrane 3, and a water inlet pressure sensor 8 and a flowmeter 9 are arranged on the section of conveying pipe; the lower end of the vertical end of the third three-way pipe 21 is connected with the vertical end of a sixth three-way pipe 24 through a conveying pipe, and a second return valve 15 is arranged on the conveying pipe; a water production valve 17 and a pressure sensor 32 are arranged on a water production pipeline of the ultrafiltration membrane 3; the concentrated solution port of the ultrafiltration membrane 3 is connected with the horizontal end of a fourth three-way pipe 22 through a conveying pipe, a pressure sensor 25 and a flowmeter 26 are arranged on the conveying pipe at the section, and the pressure sensor 25 and the flowmeter 26 respectively measure the pressure and the flow of the concentrated solution port of the ultrafiltration membrane 3; the other end of the horizontal end of the fourth three-way pipe 22 is connected with a fifth three-way pipe 23; the vertical end of the fourth three-way pipe 22 is connected with the top of the clean water tank 2 through a delivery pipe, and a third return valve 16 and a fifth check valve 31 are arranged on the section of the pipeline; the vertical end of the fifth three-way pipe 23 is connected with the horizontal end 24 of the sixth three-way pipe through a conveying pipe, and the conveying pipe at the section is provided with a first return valve 14; the other end of the horizontal end of the sixth three-way pipe 24 is connected with the bottom of the MBR tank 1 through a delivery pipe, and a fourth check valve 30 is arranged on the delivery pipe.
The automatic control device 33 is respectively connected with the water inlet pump 4, the cleaning pump 5, the high-pressure circulating pump 6, the liquid level meter 7, the nitrifying liquid water inlet valve 10, the clear water inlet valve 11, the first operating valve 12, the second operating valve 13, the water production valve 17, the clear water replenishing valve 18, the water inlet pressure sensor 8, the water inlet flow meter 9, the concentrated liquid pressure sensor 25, the concentrated liquid flow meter 26 and the alarm system.
When the system normally operates, the clean water inlet valve 11, the second operation valve 13, the second return valve 15, the third return valve 16 and the clean water replenishing valve 18 are in a closed state, other valves are in an open state, and nitrified liquid in the MBR tank 1 enters the water inlet of the ultrafiltration membrane 3 through the water inlet pump 4, the nitrified liquid inlet valve 10, the first check valve 27, the first three-way pipe 19, the second three-way pipe 20, the high-pressure circulating pump 6, the first operation valve 12, the third check valve 29 and the third three-way pipe 21; after the ultrafiltration treatment, the produced water is discharged into the next process unit from the produced water valve 17, and the concentrated solution flows back to the MBR tank 1 through the pressure sensor 25, the flow meter 26, the fourth three-way pipe 22, the fifth three-way pipe 23, the first return valve 14, the sixth three-way pipe 24 and the fourth check valve 30.
The first-stage cleaning is forward one-time cleaning which is mainly used for washing sludge intercepted by the ultrafiltration membrane surface, and the nitrification liquid water inlet valve 10, the second operation valve 13, the second return valve 15 and the third return valve 16 are always in a closed state under the state of the first-stage cleaning. The high-pressure circulating pump 6 is closed, the water inlet pump 4 is closed, the clean water inlet valve 11 is opened, the cleaning pump 5 is opened, the high-pressure circulating pump 6 is opened, half of the clean water in the clean water tank 2 is controlled by the liquid level meter 7 and the automatic control device 33 in a linkage mode to enter the water inlet of the ultrafiltration membrane 3 through the cleaning pump 5, the clean water inlet valve 11, the second check valve 28, the first three-way pipe 19, the second three-way pipe 20, the first running valve 12, the third check valve 29 and the third three-way pipe 21, and then the high-pressure circulating pump 6, the cleaning pump 5 and the clean water inlet valve 11 are closed; after the ultrafiltration treatment, the produced water is discharged into the next process unit from the produced water valve 17, the concentrated solution flows back to the MBR tank 1 through the pressure sensor 25, the flow meter 26, the fourth three-way pipe 22, the fifth three-way pipe 23, the first reflux valve 14 and the sixth three-way pipe 24, and the first-stage cleaning is completed.
The two-stage cleaning is forward circulating cleaning, the nitrified liquid water inlet valve 10, the second operation valve 13 and the second return valve 15 are always in a closed state, the first return valve 14 is closed, the third return valve 16 is opened, the clean water inlet valve 11 is opened, the cleaning pump 5 is opened, the high-pressure circulating pump 6 is opened, the residual clean water in the clean water tank 2 is pumped into the cleaning pipeline, the clean water returns to the clean water tank 2 through the cleaning pump 5, the clean water inlet valve 11, the second check valve 28, the first three-way pipe 19, the second three-way pipe 20, the high-pressure circulating pump 6, the first operation valve 12, the third check valve 29, the third three-way pipe 21, the ultrafiltration membrane 3, the fourth three-way pipe 22, the third return valve 16 and the fifth check valve 31, the cleaning is performed in the circulating pipeline for 20-90 min, after the cleaning is completed, the first return valve 14 is opened, the third return valve 16 is closed, the waste liquid is pumped into the, And (5) closing the cleaning pump 5 and closing the clean water inlet valve 11, and finishing the second-stage cleaning.
The three-stage cleaning is reverse one-time cleaning, and the nitrifying liquid inlet valve 10, the first operation valve 12, the first reflux valve 14 and the third reflux valve 16 are always in a closed state. And (2) opening a clean water replenishing valve 18, replenishing the clean water tank 2, opening a second operation valve 13 and a second return valve 15, opening a clean water inlet valve 11, opening a cleaning pump 5, allowing clean water to enter the ultrafiltration membrane 3 from a concentrated liquid port of the ultrafiltration membrane 3 through the clean water inlet valve 11, a first three-way pipe 19, a second three-way pipe 20, the second operation valve 13, a fifth three-way pipe 23 and a fourth three-way pipe 22, performing reverse cleaning on the ultrafiltration membrane 3, discharging cleaning water from a water inlet of the ultrafiltration membrane 3, returning the cleaning water to the bottom of the MBR tank 1 through the third three-way pipe 21, the second return valve 15 and a sixth three-way pipe 24, closing the cleaning pump 5, closing the clean water inlet valve 11, and completing the three-. And after the three-stage cleaning is finished, performing self-inspection again.
As shown in fig. 2, the control flow of the apparatus and method for automatic operation and three-stage cleaning of an ultrafiltration membrane system of the present invention is to start the ultrafiltration membrane system, start a self-check after starting, check whether the ultrafiltration system is normal, determine whether the system is abnormal, and after 1 hour of operation, determine whether the system has continuously operated for 24 hours, if the system has not continuously operated for 24 hours, automatically start cleaning again, if the system has continuously operated for 24 hours, automatically start cleaning, sequentially perform a forward cleaning, a forward circulation cleaning and a reverse cleaning, and perform a self-check again after cleaning; if the system is found to have a fault by self-inspection, firstly, judging whether the system is a first-stage fault, if the system is the first-stage fault (the pressure of a water inlet and a concentrated solution outlet of the ultrafiltration membrane 3 is higher than a set upper limit value, or when the water yield of the ultrafiltration membrane 3 is lower than a set lower limit value, the conditions that a membrane pipeline is blocked or the membrane flux is reduced possibly exist), immediately carrying out three-stage cleaning on the ultrafiltration membrane 3 and sending a first-stage alarm; if the fault is a secondary fault (when a pump valve is in fault, or the pressure and the flow of the water inlet of the ultrafiltration membrane 3 are lower than the set lower limit value, and the situation that a conveying pipe is broken possibly exists), a secondary alarm is immediately sent out, and a worker can stop the operation of the ultrafiltration membrane system and overhaul the system by one key. Wherein, the first-stage fault comprises membrane pipeline blockage and membrane flux reduction; secondary failures include a broken delivery pipe, a failure of a pump valve.
The conditions of pipeline blockage and membrane flux reduction are monitored by a pressure sensor 8, a flowmeter 9, a pressure sensor 25 and a flowmeter 26 at a water inlet and a concentrated solution outlet of the ultrafiltration membrane 3, and when the pressure is greater than a set upper limit value, a first-level alarm is started; and when the water production rate is lower than the set lower limit value, starting a first-level alarm. The breakage of the circulating pipeline is monitored through a pressure sensor 8 and a flowmeter 9 at the water inlet of the ultrafiltration membrane 3, and when the pressure is lower than a set lower limit value and the flow is lower than the set lower limit value, a secondary alarm is started; and when the pump valve is found to be not in place, starting a secondary alarm.
Example 1: after an ultrafiltration membrane system of a certain garbage leachate treatment plant is started, self-inspection is started, the system starts to operate after the self-inspection confirms that the system is normal, a clear water inlet valve 11, a second operation valve 13, a second return valve 15, a third return valve 16 and a clear water replenishing valve 18 are in a closed state, other valves are in an open state, and nitrifying liquid in an MBR (membrane bioreactor) tank 1 enters a water inlet of an ultrafiltration membrane 3 through a water inlet pump 4, a nitrifying liquid inlet valve 10, a first three-way pipe 19, a second three-way pipe 20, a high-pressure circulating pump 6, a first operation valve 12 and a third three-way pipe 21; after ultrafiltration treatment, the produced water is discharged into the next process unit from the water production valve 17, and the concentrated solution flows back to the MBR tank 1 through a pressure sensor 25, a flow meter 26, a fourth three-way pipe 22, a fifth three-way pipe 23, a first return valve 14 and a sixth three-way pipe 24; the operation is continued for 24 hours without abnormality, and the cleaning is automatically started. The first stage of cleaning is forward primary washing, and the liquid level meter 7 and the automatic control device 33 are linked to control half of the clean water in the clean water tank 2 to perform forward primary washing on the ultrafiltration membrane; the second stage of cleaning is forward circulating cleaning, the residual clean water in the clean water tank 2 is pumped into a pipeline, and circulating cleaning is carried out between the clean water tank 2 and the ultrafiltration membrane 3 for 20-90 min; the third stage of cleaning is reverse one-time cleaning, and after the clear water in the clear water tank 2 is filled with the clear water, the clear water enters the ultrafiltration membrane from a concentrated solution port of the ultrafiltration membrane 3, and the reverse one-time washing is carried out on the ultrafiltration membrane 3. And after the three-stage cleaning is finished, performing self-inspection again.
Example 2: after an ultrafiltration membrane system of a certain landfill leachate treatment plant is started, self-checking is started, and when the condition that the water inlet pressure of an ultrafiltration membrane 3 is larger than a set upper limit value and possibly membrane pipeline blockage or membrane flux reduction is found, the ultrafiltration membrane 3 is immediately cleaned and a primary alarm is given. The first stage of cleaning is forward primary washing, and the liquid level meter 7 and the automatic control device 33 are linked to control half of the clean water in the clean water tank 2 to perform forward primary washing on the ultrafiltration membrane; the second stage of cleaning is forward circulating cleaning, the residual clean water in the clean water tank 2 is pumped into a pipeline, and circulating cleaning is carried out between the clean water tank 2 and the ultrafiltration membrane 3 for 20-90 min; the third stage of cleaning is reverse one-time cleaning, and after the clear water in the clear water tank 2 is filled with the clear water, the clear water enters the ultrafiltration membrane from a concentrated solution port of the ultrafiltration membrane 3 to perform reverse one-time washing on the ultrafiltration membrane. And after the three-stage cleaning is finished, performing self-inspection again.
Example 3: after an ultrafiltration membrane system of a certain landfill leachate treatment plant is started, self-checking is started, and when the pressure and the flow of a water inlet and a concentrated solution port of an ultrafiltration membrane 3 are lower than a set lower limit value and possibly under the condition that a circulating pipeline is broken, a secondary alarm is immediately sent out, a worker stops the operation of the ultrafiltration membrane system by one key and overhauls the ultrafiltration membrane system.
The invention has the following advantages:
1. the positive flushing can flush the sludge on the surface of the ultrafiltration membrane at one time, and the sludge flows back to the MBR tank 1, so that the sludge amount in the MBR tank 1 is ensured.
2. And (3) forward circulating cleaning, namely circulating cleaning for 20-90 min, and further cleaning the residual mud blocks on the surface of the ultrafiltration membrane 3.
3. The reverse one-time washing can back flush suspended particles, colloid, bacteria and macromolecular organic substances fastened on the surface of the ultrafiltration membrane, thereby further cleaning the ultrafiltration membrane.
4. After the three-section cleaning process, the ultrafiltration membrane is thoroughly cleaned, the recovery efficiency of the flux in the membrane is high, the fouling of the ultrafiltration membrane is reduced, and the service life of the membrane is prolonged.
5. And starting self-checking after the ultrafiltration membrane system is started, and immediately carrying out three-section cleaning on the ultrafiltration membrane and sending a first-stage alarm if the pressure of a water inlet and a concentrated solution outlet of the ultrafiltration membrane is higher than a set upper limit value or the water yield of the ultrafiltration membrane is lower than a set lower limit value and the conditions of membrane pipeline blockage or membrane flux reduction possibly exist.
6. If a pump valve is found to be in fault, or the pressure and the flow of the water inlet of the ultrafiltration membrane are lower than the set lower limit value, and the situation that the conveying pipe is broken possibly exists, a secondary alarm is immediately sent out, and a worker can stop the operation of the ultrafiltration membrane system and overhaul the system by one key.
7. The three-section cleaning and control program of the ultrafiltration membrane system can effectively ensure the normal and stable operation of the ultrafiltration membrane system and prolong the service life of the membrane.
Claims (10)
1. The utility model provides an ultrafiltration membrane three-section washs automatic operation equipment for doing wet landfill leachate, includes MBR pond (1), clear water jar (2), milipore filter (3) and automatic control device (33), its characterized in that: a first three-way pipe (19) is arranged between the MBR tank (1) and the clean water tank (2), one horizontal end of the first three-way pipe (19) is respectively connected with the MBR tank (1) and the clean water tank (2), the vertical end of the first three-way pipe (19) is connected with the vertical end of a second three-way pipe (20), the horizontal end of the second three-way pipe (20) is respectively connected with the horizontal end of a fifth three-way pipe (23) and the vertical end of a third three-way pipe (21), the other horizontal end of the third three-way pipe (21) is connected with the ultrafiltration membrane (3), the other vertical end of the third three-way pipe (21) is connected with the vertical end of a sixth three-way pipe (24), the horizontal end of the sixth three-way pipe (24) is respectively connected with the vertical ends of the MBR tank (1) and the fifth three-way pipe (23), and the other horizontal end of the fifth three-way pipe (23) is connected with the horizontal end of a fourth three-way pipe (22), the other horizontal end of the fourth three-way pipe (22) is connected with the ultrafiltration membrane (3), and the vertical end of the fourth three-way pipe (22) is connected with the clean water tank (2).
2. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and a water inlet pump (4), a nitrifying liquid water inlet valve (10) and a first check valve (27) are sequentially arranged between the MBR tank (1) and the first three-way pipe (19).
3. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: a second check valve (28), a clean water inlet valve (11) and a cleaning pump (5) are sequentially arranged between the first three-way pipe (19) and the clean water tank (2).
4. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and a high-pressure circulating pump (6), a first operating valve (12) and a third check valve (29) are sequentially arranged between the first three-way pipe (19) and the third three-way pipe (21).
5. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and a fifth check valve (31) and a third return valve (16) are sequentially arranged between the clean water tank (2) and the fourth three-way pipe (22).
6. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: a second operation valve (13) is arranged between the second three-way pipe (20) and the fifth three-way pipe (23), a second backflow valve (15) is arranged between the third three-way pipe (21) and the sixth three-way pipe (24), a first backflow valve (14) is arranged between the fifth three-way pipe (23) and the sixth three-way pipe (24), and a fourth backflow valve (30) is arranged between the sixth three-way pipe (24) and the MBR tank (1).
7. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: the clean water tank (2) is connected with a clean water replenishing valve (18), and a liquid level meter (7) is arranged in the clean water tank (2).
8. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and a water inlet flow meter (9) and a water inlet pressure sensor (8) are arranged between the third three-way pipe (21) and the ultrafiltration membrane (3).
9. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and a concentrated solution flowmeter (26) and a concentrated solution pressure sensor (25) are arranged between the fourth three-way pipe (22) and the ultrafiltration membrane (3).
10. The ultrafiltration membrane three-stage cleaning automatic operation equipment for the dry and wet landfill leachate of claim 1, wherein the equipment comprises: and the ultrafiltration membrane (3) is connected with a water production pressure sensor (32) and a water production valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021858951.XU CN213433878U (en) | 2020-08-31 | 2020-08-31 | A milipore filter three-section washs automatic operation equipment for doing wet landfill leachate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021858951.XU CN213433878U (en) | 2020-08-31 | 2020-08-31 | A milipore filter three-section washs automatic operation equipment for doing wet landfill leachate |
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| CN213433878U true CN213433878U (en) | 2021-06-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694730A (en) * | 2021-08-23 | 2021-11-26 | 潮州深能环保有限公司 | Online monitoring and cleaning system and method for ultrafiltration membrane for treating landfill leachate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694730A (en) * | 2021-08-23 | 2021-11-26 | 潮州深能环保有限公司 | Online monitoring and cleaning system and method for ultrafiltration membrane for treating landfill leachate |
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