CN213803143U - Maintenance-free water treatment system for water supply of cooling tower - Google Patents
Maintenance-free water treatment system for water supply of cooling tower Download PDFInfo
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- CN213803143U CN213803143U CN202021386960.3U CN202021386960U CN213803143U CN 213803143 U CN213803143 U CN 213803143U CN 202021386960 U CN202021386960 U CN 202021386960U CN 213803143 U CN213803143 U CN 213803143U
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Abstract
The utility model discloses a maintenance-free water treatment system for cooling tower water supply, which comprises a pretreatment device, a reverse osmosis device and a back washing device which are respectively connected with the pretreatment device, a reverse osmosis membrane dosing device, a reverse osmosis membrane cleaning device and a spraying water tank which are respectively connected with the reverse osmosis device; the pretreatment device is connected with a water supplementing interface, and the backwashing device is connected with a spraying water pool; the pretreatment device is used for pre-filtering water entering the supplementing water interface; the reverse osmosis device is used for further filtering the water after the pre-filtration; the back washing device is used for washing the pretreatment device; the reverse osmosis membrane dosing device is used for dosing the reverse osmosis device; the reverse osmosis membrane cleaning device is used for cleaning the reverse osmosis device.
Description
Technical Field
The utility model relates to a non-maintaining water treatment system for cooling tower supplies water belongs to cooling tower water treatment technical field.
Background
A cooling tower water treatment system is water treatment equipment specially used for providing cooling water in a cooling tower, corrosion factors such as chloride ions generated by cooling water concentration increase, iron rust is caused by the existence of dissolved oxygen and other environments, dissolved salts with certain concentration are contained in cooling water and make-up water, concentration is generated due to evaporation, dissolved salts are generated, scale is formed, and meanwhile, the mixture of bacteria, mold, algae and dirty substances generated by algae and microorganisms causes low thermal efficiency, condenser blockage, pump pressure rise, flow reduction, water quality deterioration and equipment corrosion, so that shutdown and production halt are caused, the service life of a machine is shortened, frequent water changing and pollution discharging are caused, secondary pollution influences health, electric energy consumption is increased, and the operation load of the system is increased. Although purifiers for cooling water purification treatment are available in the current market, the traditional cooling tower water treatment purifiers still have the problems of low purification efficiency, poor purification effect, easy blockage of water pipelines, poor practicability and complex maintenance in the actual use process.
SUMMERY OF THE UTILITY MODEL
For solving the not enough of prior art, the utility model aims to provide a non-maintaining water treatment system for cooling tower supplies water has solved cooling tower water treatment clarifier and has had the problem that purification efficiency is low, purifying effect is poor, conduit easily blocks up, the practicality is poor in the in-service use process.
In order to achieve the above object, the utility model adopts the following technical scheme: a maintenance-free water treatment system for water supply of a cooling tower comprises a pretreatment device, a reverse osmosis device and a back washing device which are respectively connected with the pretreatment device, a reverse osmosis membrane dosing device, a reverse osmosis membrane cleaning device and a spraying water tank which are respectively connected with the reverse osmosis device; the pretreatment device is connected with a water supplementing interface, and the backwashing device is connected with a spraying water pool;
the pretreatment device is used for pre-filtering water entering the supplementing water interface; the reverse osmosis device is used for further filtering the water after the pre-filtration; the back washing device is used for washing the pretreatment device; the reverse osmosis membrane dosing device is used for dosing the reverse osmosis device; the reverse osmosis membrane cleaning device is used for cleaning the reverse osmosis device.
Further, the pretreatment device comprises: a sand filter tank C71, a carbon filter tank C72, a first electric valve V731 connected with a make-up water interface, a second electric valve V732 positioned between the inlets of the first electric valve V731 and the sand filter tank C71, a fifth electric valve V733 positioned at the outlet of the sand filter tank C71, a seventh electric valve V734 positioned between the fifth electric valve V733 and the inlet of the carbon filter tank C72, and a tenth electric valve V735 positioned at the outlet of the carbon filter tank C72.
Further, the pretreatment device also comprises a pretreatment flow transmitter FT51 and a pretreatment pressure transmitter PT41 which are arranged at the inlet of the supplementing water interface.
Further, the reverse osmosis apparatus comprises: the device comprises a security filter, a high-pressure pump, a thirteenth electric valve V736, a reverse osmosis membrane shell group, a fourteenth electric valve V751 and a manual valve V243 which are respectively connected with a concentrated water outlet of the reverse osmosis membrane shell group, and pipelines which are arranged up and down and connected with a filtered water outlet of the reverse osmosis membrane shell group, wherein the lower pipeline is provided with an unqualified water discharge fifteenth electric valve V748, and the upper pipeline is connected with a spray water tank; the inlet of the cartridge filter is connected with the outlet of the pretreatment device.
Furthermore, the security filter comprises a first security filter Z51 and a second security filter Z52 which are mutually active and standby; the high-pressure pump is provided with a first high-pressure pump P71 and a second high-pressure pump P72 which are mutually active and standby;
a high-pressure pump inlet pressure transmitter PT42 is also arranged between the security filter and the high-pressure pump; a high-pressure pump outlet pressure transmitter PT43 is arranged between the high-pressure pump and the thirteenth electric valve V736;
a produced water flow transmitter FT52 and a produced water conductivity transmitter QT51 are arranged at an outlet of the reverse osmosis membrane shell group;
the reverse osmosis membrane shell group includes: first reverse osmosis membrane shell Z71 of one-level, one-level second reverse osmosis membrane shell Z72 and second grade reverse osmosis membrane shell Z73, the input of first reverse osmosis membrane shell Z71 of one-level and second reverse osmosis membrane shell Z72 all connects on thirteenth electric valve V736, the concentrated water output of first reverse osmosis membrane shell Z71 of one-level and second reverse osmosis membrane shell Z72 is connected on second grade reverse osmosis membrane shell Z73 input, first reverse osmosis membrane shell Z71 of one-level, the filtration water exit linkage of second reverse osmosis membrane shell Z72 of one-level and second reverse osmosis membrane shell Z73 is on the pipeline of placing from top to bottom.
Further, the back washing device comprises: a backwashing pump connected with the spraying water tank, a twelfth electric valve V775 at the outlet of the backwashing pump, a backwashing water inlet fourth electric valve V741 at the drainage position of the sand filter tank and a backwashing water inlet ninth electric valve V743 at the drainage position of the carbon filter tank, which are respectively connected with the twelfth electric valve V775, a backwashing water outlet third electric valve V742 of the sand filter tank at the inlet of the sand filter tank and a backwashing water outlet eighth electric valve V744 of the carbon filter tank at the inlet of the carbon filter tank; the outputs of the third electrically operated valve V742 and the eighth electrically operated valve V744 are connected to the drain.
Further, the backwash pump includes: the first backwashing pump P86 and the second backwashing pump P87 are mutually active and standby;
the backwash assembly further includes a backwash outlet pressure transducer PT44 disposed between the backwash pump and a twelfth electrically operated valve V775.
The back washing unit still includes: a sand filter tank forward washing drainage sixth electric valve V746 arranged at the sand filter tank drainage and a carbon filter tank forward washing drainage eleventh electric valve V747 arranged at the carbon filter tank drainage.
Further, reverse osmosis membrane charge device includes: a scale inhibitor dosing box C66, a non-oxidizing biocide dosing box C67, a scale inhibitor dosing pump P91 connected with the scale inhibitor dosing box C66, and a non-oxidizing biocide dosing pump P92 connected with the non-oxidizing biocide dosing box C67.
Further, the reverse osmosis membrane dosing device is further provided with an antisludging agent dosing tank low liquid level switch LS61, an antisludging agent dosing tank ultra-low liquid level switch LS62, a non-oxidizing biocide dosing tank low liquid level switch LS63 and a non-oxidizing biocide dosing tank ultra-low liquid level switch LS64, dosing is prompted when the liquid level is lower than a set value, and the dosing pump is prohibited to be started when the liquid level is lower than a minimum limit value.
Further, reverse osmosis membrane belt cleaning device includes: the reverse osmosis membrane cleaning device comprises a first manual valve V862, a reverse osmosis membrane cleaning device cleaning barrel C81, a cleaning pump P81, a filter Z61 and a second manual valve V863 which are connected in sequence, wherein the first manual valve V862 is connected to a filtered water outlet of the reverse osmosis device, and the second manual valve V863 is connected to a water inlet of a reverse osmosis membrane shell group of the reverse osmosis membrane device.
The utility model discloses the beneficial effect who reaches:
(1) the utility model meets the automatic water making function of the spray water tank of the cooling tower through the pretreatment device and the reverse osmosis device, and the produced water completely meets the water quality requirement of the external circulating water;
(2) the water treatment system can automatically realize the functions of produced water filtration, backwashing and forward washing, and automatic maintenance, thereby greatly reducing the operation and maintenance time and energy of operation and maintenance personnel;
(3) the equipment runs completely automatically and has reasonable control logic; the device blockage is also considered, and the manual valve is opened when the valve is abnormal, so that the system operation is not influenced;
(4) the utility model is safe, reliable and stable in mechanical performance; through two-stage membrane shell purification efficiency high, purifying effect is good, is difficult to block up, the practicality is high through conduit.
Drawings
Fig. 1 is a schematic structural diagram of a water treatment system according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, a maintenance-free water treatment system for water supply of a cooling tower comprises a pretreatment device, a reverse osmosis device and a back washing device which are respectively connected with the pretreatment device, a reverse osmosis membrane dosing device, a reverse osmosis membrane cleaning device and a spray water tank which are respectively connected with the reverse osmosis device; the pretreatment device is connected with a water supplementing interface, and the back washing device is connected with a spraying water pool.
The pretreatment device is used for pre-filtering water entering the supplementing water interface;
the reverse osmosis device is used for further filtering the water after the pre-filtration;
the back washing device is used for back washing the pretreatment device;
the reverse osmosis membrane dosing device is used for dosing the reverse osmosis device so as to purify the reverse osmosis membrane;
the reverse osmosis membrane cleaning device is used for cleaning the reverse osmosis device;
the pretreatment device comprises: a sand filter tank C71, a carbon filter tank C72, a first electric valve V731 connected with a make-up water interface, a second electric valve V732 positioned between the inlets of the first electric valve V731 and the sand filter tank C71, a fifth electric valve V733 positioned at the outlet of the sand filter tank C71, a seventh electric valve V734 positioned between the fifth electric valve V733 and the inlet of the carbon filter tank C72, and a tenth electric valve V735 positioned at the outlet of the carbon filter tank C72;
the pretreatment device also comprises a pretreatment flow transmitter FT51 and a pretreatment pressure transmitter PT41 which are arranged at the inlet of the supplementing water interface and are respectively used for measuring water flow and water pressure;
the sand filter tank contains quartz sand required by pretreatment, and the carbon filter tank contains activated carbon required by pretreatment.
When the water treatment system produces water, the first electric valve V731, the second electric valve V732, the fifth electric valve V733, the seventh electric valve V734 and the tenth electric valve V735 in the pretreatment device are opened, and primary filtered water is produced and conveyed to the reverse osmosis device.
The reverse osmosis apparatus comprises: the device comprises a security filter, a high-pressure pump, a thirteenth electric valve V736, a reverse osmosis membrane shell group, a fourteenth electric valve V751 connected with a concentrated water outlet of the reverse osmosis membrane shell group and a pipeline which is arranged up and down and connected with a filtered water outlet of the reverse osmosis membrane shell group, wherein the lower pipeline is provided with an unqualified water discharge fifteenth electric valve V748, the upper pipeline is connected with a spray water tank, and filtered water is output to the spray water tank; the output of the fourteenth electrically operated valve V751 is connected to the drain.
The inlet of the cartridge filter is connected to a tenth electrically operated valve V735;
the security filter comprises a first security filter Z51 and a second security filter Z52 which are mutually active and standby;
a high-pressure pump inlet pressure transmitter PT42 is also arranged between the security filter and the high-pressure pump;
the high-pressure pump is provided with a first high-pressure pump P71 and a second high-pressure pump P72 which are mutually active and standby;
a high-pressure pump outlet pressure transmitter PT43 is arranged between the high-pressure pump and the thirteenth electric valve V736;
the reverse osmosis membrane shell group includes: the device comprises a first-stage first reverse osmosis membrane shell Z71, a first-stage second reverse osmosis membrane shell Z72 and a second-stage reverse osmosis membrane shell Z73, wherein the input ends of the first-stage first reverse osmosis membrane shell Z71 and the first-stage second reverse osmosis membrane shell Z72 are connected to a thirteenth electric valve V736, the concentrated water output ends of the first-stage first reverse osmosis membrane shell Z71 and the first-stage second reverse osmosis membrane shell Z72 are connected to the input end of the second-stage reverse osmosis membrane shell Z73, and the filtered water outlets of the first-stage first reverse osmosis membrane shell Z71, the first-stage second reverse osmosis membrane shell Z72 and the second-stage reverse osmosis membrane shell Z73 are connected to a pipeline which is placed up and down;
can further filter through the one-level and second grade membrane shell in the reverse osmosis membrane shell group, increase the filter effect, purification efficiency is high, purifying effect is good.
Both ends of the fourteenth electric valve V751 are also provided with a manual valve V243, and when the system operates, the V243 is always in a half-open state and is used for discharging filtered concentrated water;
a water production flow transmitter FT52 and a water production conductivity transmitter QT51 are also arranged between the filtered water outlets of the first-stage first reverse osmosis membrane shell Z71, the first-stage second reverse osmosis membrane shell Z72 and the second-stage reverse osmosis membrane shell Z73 and the pipelines which are arranged up and down and are respectively used for measuring the flow rate of produced water and the conductivity of the produced water;
when the system is in the mode of producing water, the high-pressure pump starts, and thirteenth electric valve V736, fourteenth electric valve V751, fifteenth electric valve V748 are opened, pass through reverse osmosis membrane behind the rivers pressure boost, through fourteenth electric valve V751 discharge dense water, and unqualified water is discharged through fifteenth electric valve V748 and lower pipeline in the initial stage, and follow-up fifteenth electric valve V748 of closing is through the qualified water supply of last pipeline output.
Can remove large-particle impurities and active residual chlorine in water and ensure that raw water can meet the water inlet requirement of a reverse osmosis device after being pretreated.
The back washing device comprises: a backwashing pump connected with the spraying water tank, a twelfth electric valve V775 at the outlet of the backwashing pump, a backwashing water inlet fourth electric valve V741 at the drainage position of the sand filter tank and a backwashing water inlet ninth electric valve V743 at the drainage position of the carbon filter tank, which are respectively connected with the twelfth electric valve V775, a backwashing water outlet third electric valve V742 of the sand filter tank at the inlet of the sand filter tank and a backwashing water outlet eighth electric valve V744 of the carbon filter tank at the inlet of the carbon filter tank; the output ends of the third electric valve V742 and the eighth electric valve V744 are connected with a water outlet;
the backwash pump includes: the first backwashing pump P86 and the second backwashing pump P87 are mutually active and standby;
the backwashing device also comprises a backwashing outlet pressure transmitter PT44 arranged between the backwashing pump and a twelfth electric valve V775 and used for measuring the water pressure at the outlet of the backwashing pump;
when the sand filter tank is in a water production mode, all valves in the backwashing device are closed;
when the water treatment system produces water for 48 hours in an accumulated way (the accumulated starting time can be set), backwashing is carried out for 5min once,
when the sand filter tank is in a backwashing mode, the first electric valve V731 is closed, the high-pressure pump in the reverse osmosis device is closed, the backwashing pump is opened, and the twelfth electric valve V775, the backwashing water inlet fourth electric valve V741 and the sand filter tank backwashing water discharge third electric valve V742 are opened; closing the second electrically operated valve V732, the fifth electrically operated valve V733;
when the carbon filter tank is in a backwashing mode, the first electric valve V731 is closed, the high-pressure pump in the reverse osmosis device is closed, the backwashing pump is opened, and the twelfth electric valve V775, the backwashing water inlet ninth electric valve V743 and the carbon filter tank backwashing water discharge eighth electric valve V744 are opened; the seventh electrically operated valve V734, the tenth electrically operated valve V735 are closed;
during backwashing operation, water flow is pressurized by a backwashing pump and reversely passes through the sand filter tank and/or the carbon filter tank from a drainage part at the bottom of the sand filter tank and/or the carbon filter tank so as to wash out impurities trapped in a filter material layer, so that the filter material can recover the filtering capacity in a short time.
The carbon filter tank and the carbon filter tank of the pretreatment device can also be in a forward washing mode, and the forward washing mode can be used for re-compacting the quartz sand and the activated carbon which are dispersed in the backwashing process; the back washing unit still includes: the sand filtering tank forward washing and water discharging sixth electric valve V746 arranged at the sand filtering tank water discharging position, and the carbon filtering tank forward washing and water discharging eleventh electric valve V747 arranged at the carbon filtering tank water discharging position, wherein the valves V746 and V747 are connected with a water discharging port.
In the backwash mode, valves V746 and V747 are both closed.
Normal wash mode of sand canister C71: v731 open, backwash pump closed, V775 closed, V732 open, V733 closed, V741 and V742 closed, V746 open. The time of the forward washing: 2 minutes (settable).
Carbon canister C72 normal wash mode: v731 is opened, the backwashing pump is closed, V775 is closed, the seventh electrovalve V734 of the carbon filter tank inlet is opened, the tenth electrovalve V735 is closed, V743 and V744 are closed, and V747 is opened. The time of the forward washing: 2 minutes (settable).
The sand filter tank and the carbon filter tank of the pretreatment device are also provided with a bypass mode, a sand filter tank manual valve V721 is arranged between the water input end of the first electric valve V731 and the water input end of the seventh electric valve V734, and a carbon filter tank manual valve V722 is arranged between the water input end of the seventh electric valve V734 and the reverse osmosis device;
when the sand filter tank C71 is blocked, the manual valve V721 of the sand filter tank is opened. When carbon canister C72 is found to be plugged, carbon canister manual valve V722 is opened and the emergency system may continue to operate.
Reverse osmosis membrane charge device includes: a scale inhibitor dosing box C66, a non-oxidizing biocide dosing box C67, a scale inhibitor dosing pump P91 connected with a scale inhibitor dosing box C66, and a non-oxidizing biocide dosing pump P92 connected with a non-oxidizing biocide dosing box C67; still be provided with the dirty-proof agent dosing tank on the low side liquid level switch LS61 and dirty-proof agent dosing tank minimum liquid level switch LS62, non-oxidation biocide dosing tank on the low side liquid level switch LS63, non-oxidation biocide dosing tank minimum liquid level switch LS64, suggestion fortune dimension personnel add the medicine when the liquid level is on the low side, suggestion forbids when the liquid level is ultralow starts the dosing pump, prevents to add the idling of medicine pump and leads to motor trouble.
When the reverse osmosis device is started, the reverse osmosis membrane dosing device is started in a linkage manner.
Reverse osmosis membrane belt cleaning device includes: the reverse osmosis membrane cleaning device comprises a first manual valve V862, a reverse osmosis membrane cleaning device cleaning barrel C81, a cleaning pump P81, a filter Z61 and a second manual valve V863 which are connected in sequence, wherein the first manual valve V862 is connected to a filtered water outlet of the reverse osmosis device, and the second manual valve V863 is connected to a water inlet of a reverse osmosis membrane shell group. When the water treatment system is not used for a long time, a first manual valve V862 of the reverse osmosis flushing inlet and a second manual valve V863 of the reverse osmosis flushing backwater are manually opened to manually clean the reverse osmosis membrane.
The reverse osmosis device high-pressure pump adopts frequency conversion control, and the working frequency of a frequency converter is controlled by adopting a PID principle according to the current water production flow (measured by a reverse osmosis device water production flow transmitter FT 52). The reverse osmosis device has a starting low-pressure washing mode and a high-pressure washing mode, and the cleanness of the reverse osmosis membrane is ensured.
Starting up a low-pressure flushing mode: when the reverse osmosis device is started, firstly, a thirteenth electric valve V736, a fourteenth electric valve V751 for concentrated water discharge and a fifteenth electric valve V748 for unqualified water discharge are opened, the reverse osmosis device is flushed for about 2min by means of the water production pressure of the front security filter, the equipment enters a state to be started, and the electric valves V736, V748 and V751 are kept in an opened state.
High-pressure flushing mode: after the low-pressure flushing is finished, the high-pressure pump is started, the unqualified water is discharged to the fifteenth electric valve V748, the fourteenth electric valve V751 for quickly discharging the concentrated water is in an opening state, and the high-pressure flushing is carried out. Rinsing for 2 minutes. After the high-pressure flushing is finished, the fifteenth electric valve V748 for discharging unqualified water and the fourteenth electric valve V751 for quickly discharging concentrated water are closed, and the concentrated water is discharged from the valves because the manual valve V243 is in a half-open state.
Be provided with spray pond level gauge LT59 in the pond of spraying, when the spray pond liquid level that surveys was less than and starts moisturizing liquid level definite value, open the first electric valve V731 that the make-up water intake, water treatment water charging system starts to carry out the moisturizing to the pond of spraying, and the moisturizing stops moisturizing liquid level definite value to the pond of spraying.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. A maintenance-free water treatment system for water supply of a cooling tower is characterized by comprising a pretreatment device, a reverse osmosis device and a back washing device which are respectively connected with the pretreatment device, a reverse osmosis membrane dosing device, a reverse osmosis membrane cleaning device and a spraying water tank which are respectively connected with the reverse osmosis device; the pretreatment device is connected with a water supplementing interface, and the backwashing device is connected with a spraying water pool; the pretreatment device is used for pre-filtering water entering the supplementing water interface; the reverse osmosis device is used for further filtering the water after the pre-filtration; the back washing device is used for washing the pretreatment device; the reverse osmosis membrane dosing device is used for dosing the reverse osmosis device; the reverse osmosis membrane cleaning device is used for cleaning the reverse osmosis device.
2. A maintenance-free water treatment system for a cooling tower water supply as claimed in claim 1 wherein the pretreatment device comprises: a sand filter tank C71, a carbon filter tank C72, a first electric valve V731 connected with a make-up water interface, a second electric valve V732 positioned between the inlets of the first electric valve V731 and the sand filter tank C71, a fifth electric valve V733 positioned at the outlet of the sand filter tank C71, a seventh electric valve V734 positioned between the fifth electric valve V733 and the inlet of the carbon filter tank C72, and a tenth electric valve V735 positioned at the outlet of the carbon filter tank C72.
3. The maintenance-free water treatment system for water supply to a cooling tower of claim 2 wherein the pre-treatment means further comprises a pre-treatment flow transducer FT51 and a pre-treatment pressure transducer PT41 provided at the inlet of the make-up water connection.
4. The maintenance-free water treatment system for a cooling tower water supply of claim 1, wherein the reverse osmosis unit comprises: the device comprises a security filter, a high-pressure pump, a thirteenth electric valve V736, a reverse osmosis membrane shell group, a fourteenth electric valve V751 and a manual valve V243 which are respectively connected with a concentrated water outlet of the reverse osmosis membrane shell group, and pipelines which are arranged up and down and connected with a filtered water outlet of the reverse osmosis membrane shell group, wherein the lower pipeline is provided with an unqualified water discharge fifteenth electric valve V748, and the upper pipeline is connected with a spray water tank; the inlet of the cartridge filter is connected with the outlet of the pretreatment device.
5. The maintenance-free water treatment system for a water supply to a cooling tower of claim 4 wherein said cartridge filter has two first cartridge filters Z51 and a second cartridge filter Z52 active and inactive with each other; the high-pressure pump is provided with a first high-pressure pump P71 and a second high-pressure pump P72 which are mutually active and standby; a high-pressure pump inlet pressure transmitter PT42 is also arranged between the security filter and the high-pressure pump; a high-pressure pump outlet pressure transmitter PT43 is arranged between the high-pressure pump and the thirteenth electric valve V736; a produced water flow transmitter FT52 and a produced water conductivity transmitter QT51 are arranged at an outlet of the reverse osmosis membrane shell group; the reverse osmosis membrane shell group includes: first reverse osmosis membrane shell Z71 of one-level, one-level second reverse osmosis membrane shell Z72 and second grade reverse osmosis membrane shell Z73, the input of first reverse osmosis membrane shell Z71 of one-level and second reverse osmosis membrane shell Z72 all connects on thirteenth electric valve V736, the concentrated water output of first reverse osmosis membrane shell Z71 of one-level and second reverse osmosis membrane shell Z72 is connected on second grade reverse osmosis membrane shell Z73 input, first reverse osmosis membrane shell Z71 of one-level, the filtration water exit linkage of second reverse osmosis membrane shell Z72 of one-level and second reverse osmosis membrane shell Z73 is on the pipeline of placing from top to bottom.
6. The maintenance-free water treatment system for a cooling tower water supply of claim 1, wherein the back flush means comprises: a backwashing pump connected with the spraying water tank, a twelfth electric valve V775 at the outlet of the backwashing pump, a backwashing water inlet fourth electric valve V741 at the drainage position of the sand filter tank and a backwashing water inlet ninth electric valve V743 at the drainage position of the carbon filter tank, which are respectively connected with the twelfth electric valve V775, a backwashing water outlet third electric valve V742 of the sand filter tank at the inlet of the sand filter tank and a backwashing water outlet eighth electric valve V744 of the carbon filter tank at the inlet of the carbon filter tank; the outputs of the third electrically operated valve V742 and the eighth electrically operated valve V744 are connected to the drain.
7. The maintenance-free water treatment system for water supply to a cooling tower of claim 6 wherein the backwash pump comprises: the first backwashing pump P86 and the second backwashing pump P87 are mutually active and standby; the backwashing device also comprises a backwashing outlet pressure transmitter PT44 arranged between the backwashing pump and a twelfth electric valve V775; the back washing unit still includes: a sand filter tank forward washing drainage sixth electric valve V746 arranged at the sand filter tank drainage and a carbon filter tank forward washing drainage eleventh electric valve V747 arranged at the carbon filter tank drainage.
8. The maintenance-free water treatment system for water supply to a cooling tower of claim 1, wherein the reverse osmosis membrane chemical dosing device comprises: a scale inhibitor dosing box C66, a non-oxidizing biocide dosing box C67, a scale inhibitor dosing pump P91 connected with the scale inhibitor dosing box C66, and a non-oxidizing biocide dosing pump P92 connected with the non-oxidizing biocide dosing box C67.
9. The maintenance-free water treatment system for supplying water to a cooling tower of claim 8, wherein the reverse osmosis membrane dosing device is further provided with an anti-scaling agent dosing tank low liquid level switch LS61, an anti-scaling agent dosing tank ultra-low liquid level switch LS62, a non-oxidizing biocide dosing tank low liquid level switch LS63 and a non-oxidizing biocide dosing tank ultra-low liquid level switch LS64, wherein dosing is prompted when the liquid level is lower than a set value, and the dosing pump is prohibited from being started when the liquid level is lower than a minimum limit value.
10. The maintenance-free water treatment system for a cooling tower water supply of claim 1, wherein the reverse osmosis membrane cleaning device comprises: the reverse osmosis membrane cleaning device comprises a first manual valve V862, a reverse osmosis membrane cleaning device cleaning barrel C81, a cleaning pump P81, a filter Z61 and a second manual valve V863 which are connected in sequence, wherein the first manual valve V862 is connected to a filtered water outlet of the reverse osmosis device, and the second manual valve V863 is connected to a water inlet of a reverse osmosis membrane shell group of the reverse osmosis membrane device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202021386960.3U CN213803143U (en) | 2020-07-15 | 2020-07-15 | Maintenance-free water treatment system for water supply of cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021386960.3U CN213803143U (en) | 2020-07-15 | 2020-07-15 | Maintenance-free water treatment system for water supply of cooling tower |
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| CN213803143U true CN213803143U (en) | 2021-07-27 |
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