CN115745084A - Intelligent direct drinking water cleaning device and method - Google Patents
Intelligent direct drinking water cleaning device and method Download PDFInfo
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- CN115745084A CN115745084A CN202211432653.8A CN202211432653A CN115745084A CN 115745084 A CN115745084 A CN 115745084A CN 202211432653 A CN202211432653 A CN 202211432653A CN 115745084 A CN115745084 A CN 115745084A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 66
- 239000003651 drinking water Substances 0.000 title claims abstract description 33
- 235000020188 drinking water Nutrition 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 345
- 239000012528 membrane Substances 0.000 claims abstract description 108
- 238000011010 flushing procedure Methods 0.000 claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 claims abstract description 45
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims description 18
- 238000011001 backwashing Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 8
- 230000007246 mechanism Effects 0.000 claims description 7
- 239000003344 environmental pollutant Substances 0.000 claims description 4
- 231100000719 pollutant Toxicity 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims description 3
- 244000005700 microbiome Species 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 8
- 230000001502 supplementing effect Effects 0.000 description 8
- 239000003814 drug Substances 0.000 description 5
- 230000003020 moisturizing effect Effects 0.000 description 4
- 230000002262 irrigation Effects 0.000 description 3
- 238000003973 irrigation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000001728 nano-filtration Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000941 radioactive substance Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/152—Water filtration
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an intelligent direct drinking water cleaning device and a method, wherein the device comprises a cleaning system, the cleaning system is connected with a direct drinking water treatment system, the cleaning system comprises a circulating water tank, and a stop valve, a variable frequency pump, a pressure transmitter, a precision filter, a worm gear flow meter, a direct flushing electric valve and a water inlet conductivity meter which are sequentially connected on a water outlet pipe of the circulating water tank, a circulating pipe is arranged between the worm gear flow meter and the direct flushing electric valve, the circulating pipe is sequentially provided with a reverse flushing electric valve and a concentrated water circulating electric valve, and the tail end of the circulating pipe is connected with the circulating water tank; the water outlet end of the membrane component of the direct drinking water treatment system is connected with a water production circulation electric valve. The membrane module cleaning device can thoroughly clean impurities such as ions and microorganisms blocking the membrane module in actual use, enhances the water flow capacity of the membrane module, has the advantages of simple structure, convenience in operation, easiness in implementation and the like, and effectively prolongs the service life of the membrane module.
Description
Technical Field
The invention relates to the technical field of direct drinking water equipment cleaning, in particular to an intelligent direct drinking water cleaning device, and further relates to an intelligent direct drinking water cleaning method.
Background
At present, the advanced treatment of domestic water purification equipment mainly adopts a single membrane group or a mixed membrane group to carry out the advanced purification treatment of tap water, such as reverse osmosis, nanofiltration and ultrafiltration, but the advanced treatment technology has a problem that no matter what water is used as raw water, a membrane water inlet, the inside of the membrane and a water producing port can be crystallized or bacteria are bred, when impurities and microorganisms reach a certain degree, the water passing amount of the membrane group is sharply reduced, the overpressure low-flow operation of the equipment is caused, the equipment is further caused to break down, and the machine is stopped.
When the quality of raw water is deteriorated, the quality of produced water is also deteriorated correspondingly, so that the quality of the produced water is unstable and the quality of the produced water is reduced, and at the moment, the membrane group is blocked in a short time.
Disclosure of Invention
The invention aims to provide an intelligent direct drinking water cleaning device and method, which can thoroughly clean impurities such as ions, microorganisms and the like blocking a membrane group in actual use, enhance the water flow capacity of the membrane group, have the advantages of simple structure, convenience in operation, easiness in implementation and the like, and effectively prolong the service life of the membrane group.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
an intelligent direct drinking water cleaning device comprises a cleaning system, wherein the cleaning system is connected with a direct drinking water treatment system, the cleaning system comprises a circulating water tank, a stop valve, a variable frequency pump, a pressure transmitter, a precision filter, a worm gear flow meter, a forward flushing electric valve and a water inlet conductivity meter, the stop valve, the variable frequency pump, the pressure transmitter, the precision filter, the worm gear flow meter, the forward flushing electric valve and the water inlet conductivity meter are sequentially connected onto a water outlet pipe of the circulating water tank, a circulating pipe is arranged between the worm gear flow meter and the forward flushing electric valve, a reverse flushing electric valve and a concentrated water circulating electric valve are sequentially arranged on the circulating pipe, and the tail end of the circulating pipe is connected with the circulating water tank;
the water outlet end of the membrane component of the direct drinking water treatment system is connected with an electric valve for water production circulation, the electric valve for water production circulation is connected with the outlet end of the electric valve for concentrated water circulation, and the circulation pipe is communicated with a concentrated water port of the membrane component.
Wherein, be provided with the moisturizing pipe on the circulating water tank, be provided with the moisturizing motorised valve on the moisturizing pipe, moisturizing pipe and circulating pipe connection.
Further optimize, the circulation tank lower extreme is provided with the drain pipe, is provided with the drainage motorised valve on the drain pipe.
Wherein, circulating water tank side is provided with PH changer and liquid level changer.
Wherein, the circulating water tank is provided with a stirring mechanism.
Further optimize, rabbling mechanism is electric mixer.
Further limit, install pressure transmitter between inverter pump and the precision filter.
The water inlet of the membrane component is connected with an inlet electric valve, and an inlet pressure transmitter and a first TDS detector are arranged between the water inlet of the membrane component and the inlet electric valve; the concentrated water port of the membrane component is connected with a concentrated water electric valve, and a concentrated water pressure transmitter is arranged between the concentrated water electric valve and the concentrated water port of the membrane component.
Wherein, the water production port of the membrane component is sequentially connected with a water production pressure transmitter, a water production electric valve, a water production PH transmitter, a water production conductivity meter and a remote water meter, and the tail end of the remote water meter is connected with a water production pipe.
The invention discloses an intelligent direct drinking water cleaning method which is characterized by comprising the following steps:
checking the instantaneous flow and the water production pressure of the remote water meter to compare with the data during initial stable operation, judging that the instantaneous flow and the water production pressure are consistent or close to each other, and if the instantaneous flow and the water production pressure are inconsistent, physically cleaning the membrane module;
if the data of the initial stable operation cannot be achieved after the physical cleaning, the equipment alarms and reminds to carry out chemical cleaning;
step 2: physical irrigation
The positive washing comprises the following specific steps: opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, and simultaneously opening a stop valve to enable a water inlet of the variable frequency pump 3 to be full of water and exhaust;
closing the water replenishing electric valve when the circulating water tank is replenished to a set liquid level, simultaneously opening the positive flushing electric valve, fully opening the concentrated water electric valve, opening the water production electric valve, opening the variable frequency pump, observing the instantaneous flow of the turbine flowmeter and the pressure change of the concentrated water pressure transmitter, debugging the variable frequency pump, modifying the pressure, and controlling the water inlet pressure to be below 0.3 Mpa;
if the pressure is below 0.3Mpa, the flow rate is difficult to achieve, the water inlet pressure is controlled as much as possible, and the water cannot be produced or produced less is taken as the standard, and generally the pressure cannot exceed 0.4Mpa;
controlling the flow rate to be 1.8-2.5 m/h, increasing the horizontal shearing force in a low-pressure and high-flow-rate mode, and flushing pollutants out of a membrane element for 10-15 minutes;
the back washing comprises the following specific steps:
opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, and simultaneously opening a stop valve to enable a water inlet of the variable frequency pump to be full of water and exhaust;
closing the water replenishing electric valve when the circulating water tank is replenished to a set liquid level, simultaneously opening the backwashing electric valve, opening the inlet electric valve, and reasonably setting pressure and flow, flushing time and flushing frequency according to the technical requirements and use conditions of the membrane in the membrane module of each manufacturer until impurities in the flushed membrane are clean;
and 3, the chemical cleaning comprises the following specific steps:
firstly, calculating the volume required by a membrane and a pipeline in a membrane component, opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, then preparing a solution required for cleaning, measuring the pH value of the solution by using a pH transmitter 5, and uniformly stirring by using an electric stirrer to ensure that the solution reaches the technical index;
then, opening a stop valve, filling the solution into a variable frequency pump and exhausting, opening a forward washing electric valve, opening a concentrated water electric valve to slowly discharge the previous water until the solution is discharged, closing the concentrated water electric valve, opening a concentrated water circulation electric valve to circulate the solution in the membrane module, starting the circulation for 5 minutes,
circulating according to the amount of 1/3 of the set flow for 5-10 minutes;
circulating according to 2/3 of the set flow, and circulating according to the maximum flow after 10 minutes;
meanwhile, detecting the change condition of the PH value, after circulating for 1 hour, closing the positive flushing electric valve and the concentrated water circulating electric valve, and stopping the variable frequency pump to soak the solution in the membrane for 1-12 hours;
after the soaking time is up, the membrane is washed, the solution in the membrane is washed by a clean water source, the drainage electric valve, the concentrated water circulation electric valve and the variable frequency pump are opened to fully drain the solution, and the clean membrane and the pipeline are washed by clean water circulation for 20 to 60 minutes possibly;
finally, starting the direct drinking water device to be in an automatic state, detecting the pressure, conductivity and PH of produced water, comparing the detected pressure, conductivity and PH of the produced water with the initial stable operation state data, and reaching the standard; if the standard is not met, repeating the washing steps.
Compared with the prior art, the invention has the following beneficial effects:
the annular water tank can fully fuse the medicament and water to form solution with the same concentration, and simultaneously reduce the labor intensity; the variable frequency pump is adopted for speed regulation, the pressure and the flow can be regulated according to the requirement, and parameters can be selectively set aiming at different flow equipment, so that the flow speed and the flow are constant; the PH transducer is adopted for online detection, so that the obtained data is faster and more accurate, and the adding amount of the medicament can be changed rapidly; by adopting the integrated positive and negative flushing function and the circulating flushing function, on one hand, impurities such as calcium, magnesium, bacteria, organic matters, inorganic matters, metal ions, radioactive substances and the like in the membrane can be thoroughly cleared, and on the other hand, the membrane module can be flushed in all directions; the circulating water tank is used as a solvent proportioning and adding place, and is an indispensable link during circulation. The membrane module cleaning device can thoroughly clean impurities such as ions and microorganisms blocking the membrane module in actual use, enhances the water flow capacity of the membrane module, has the advantages of simple structure, convenience in operation, easiness in implementation and the like, and effectively prolongs the service life of the membrane module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is an overall schematic diagram of the present invention.
Reference numerals:
1-water supplementing electric valve, 2-electric stirrer, 3-electric cabinet, 4-turbine flowmeter, 5-back washing electric valve, 6-positive washing electric valve, 7-concentrated water electric valve, 8-concentrated water pipe, 9-produced water pipe, 10-2 remote water meter, 11-produced water conductivity meter, 12-produced water PH transducer, 13-produced water electric valve, 14-produced water pressure transducer, 15-concentrated water pressure transducer, 16-membrane component, 17-inlet water conductivity, 18-inlet pressure transducer, 19-produced water circulation electric valve, 20-concentrated water circulation electric valve, 21-inlet electric valve, 22-precision filter, 23-variable frequency pump, 24-stop valve, 25-PH transducer, 26-water discharging electric valve, 27-liquid level transducer, 28-pressure transducer and 29-circulation water tank.
Detailed Description
In the following, only certain exemplary embodiments are briefly described. As those skilled in the art would recognize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the embodiments of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature, and not as restrictive.
In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and for simplicity in description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the embodiments of the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; the connection can be mechanical connection, electrical connection or communication; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. Specific meanings of the above terms in the embodiments of the present invention may be understood by those of ordinary skill in the art according to specific situations.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or the first and second features being in contact, not directly, but via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.
The following disclosure provides many different embodiments or examples for implementing different configurations of embodiments of the invention. To simplify the disclosure of embodiments of the invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit embodiments of the invention. Furthermore, embodiments of the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1, the embodiment discloses an intelligent direct drinking water cleaning device, which comprises a cleaning system, wherein the cleaning system is connected with a direct drinking water treatment system, the cleaning system comprises a circulating water tank 29, a stop valve 24, a variable frequency pump 23, a pressure transmitter 28, a precision filter 22, a turbine flow meter 4, a positive flushing electric valve 6 and a water inlet conductivity meter 17 which are sequentially connected to a water outlet pipe of the circulating water tank 29, a circulating pipe is arranged between the turbine flow meter 4 and the positive flushing electric valve 6, a back flushing electric valve 5 and a concentrated water circulating electric valve 20 are sequentially arranged on the circulating pipe, and the tail end of the circulating pipe is connected with the circulating water tank 29;
the water outlet end of the membrane component 16 of the direct drinking water treatment system is connected with a water production circulation electric valve 19, the water production circulation electric valve 19 is connected with the outlet end of a concentrated water circulation electric valve 20, and the circulation pipe is communicated with a concentrated water port of the membrane component 16.
Wherein, the circulating water tank 29 is provided with a water supplementing pipe, the water supplementing pipe is provided with a water supplementing electric valve 1, and the water supplementing pipe is connected with the circulating pipe.
Further preferably, the lower end of the circulating water tank 29 is provided with a drain pipe, and the drain pipe is provided with a drain electric valve 26.
Wherein, the side of the circulating water tank 29 is provided with a PH transmitter 25 and a liquid level transmitter 27.
Further preferably, a stirring mechanism is arranged on the circulating water tank 29.
Wherein the stirring mechanism is an electric stirrer 2.
Wherein the pressure transmitter is arranged between the variable frequency pump 23 and the precision filter 22.
Further optimizing, the water inlet of the membrane module 16 is connected with an inlet electric valve 21, and an inlet pressure transmitter 18 and a first TDS detector are arranged between the water inlet of the membrane module 16 and the inlet electric valve 21; a concentrated water port of the membrane component 16 is connected with a concentrated water electric valve 7, and a concentrated water pressure transmitter 15 is arranged between the concentrated water electric valve 7 and the concentrated water port of the membrane component 16.
Wherein, the water producing port of the membrane component 16 is connected with a water producing pressure transmitter 14, a water producing electric valve 13, a water producing PH transmitter 12, a water producing conductivity meter 11 and a remote water meter 10 in sequence, and the tail end of the remote water meter 10 is connected with a water producing pipe 9.
The embodiment also discloses an intelligent direct drinking water cleaning method, which specifically comprises the following steps:
checking the instantaneous flow and the water production pressure of the remote water meter 10, comparing the instantaneous flow and the water production pressure with the data in the initial stable operation, judging that the instantaneous flow and the water production pressure are consistent or close to each other, and if the instantaneous flow and the water production pressure are inconsistent, physically cleaning the membrane module 16;
if the data of the initial stable operation can not be achieved after the physical cleaning, the equipment alarms and reminds to carry out chemical cleaning;
step 2: physical irrigation
The positive washing comprises the following specific steps: opening the water supplementing electric valve 1 to supplement clean produced water into the circulating water tank 29, and simultaneously opening the stop valve 24 to make the water inlet of the variable frequency pump 23 full of water and exhaust;
closing the water replenishing electric valve 1 when the circulating water tank 29 is replenished to a set liquid level, simultaneously opening the positive flushing electric valve 6, fully opening the concentrated water electric valve 7, opening the water production electric valve 13, opening the variable frequency pump 23, observing the instantaneous flow of the turbine flowmeter 4 and the pressure change of the concentrated water pressure transmitter 15, debugging the variable frequency pump 23, modifying the pressure, and controlling the water inlet pressure to be below 0.3 Mpa;
if the pressure is below 0.3Mpa, the flow rate is difficult to achieve, the water inlet pressure is controlled as much as possible, and the water cannot be produced or produced less is taken as the standard, and generally the pressure cannot exceed 0.4Mpa;
controlling the flow rate to be 1.8-2.5 m/h, increasing the horizontal shearing force in a low-pressure and high-flow-rate mode, and flushing the pollutants out of the membrane element, wherein the flushing time is controlled to be 10-15 minutes;
the back washing comprises the following specific steps:
opening the water supplementing electric valve 1 to supplement clean produced water into the circulating water tank 29, and simultaneously opening the stop valve 24 to make the water inlet of the variable frequency pump 23 full of water and exhaust;
closing the water replenishing electric valve 1 when the circulating water tank 29 is replenished to a set liquid level, simultaneously opening the backwashing electric valve 5, opening the inlet electric valve 21, and reasonably setting pressure and flow, flushing time and flushing frequency according to the technical requirements and use conditions of the membrane in the membrane module 16 of each manufacturer until impurities in the flushed membrane are clean;
and 3, the chemical cleaning comprises the following specific steps:
firstly, calculating the volume required by a membrane and a pipeline in the membrane component 16, opening a water replenishing electric valve 1 to replenish clean produced water into a circulating water tank 29, then preparing a solution required for cleaning, measuring the pH value of the solution by using a pH transmitter 25, and uniformly stirring by using an electric stirrer 2 to ensure that the solution reaches the technical index, specifically, fully dissolving;
then, the stop valve 24 is opened, the solution fills the variable frequency pump 23 and is exhausted, the electric valve for forward washing is opened, the electric valve for concentrated water 7 is opened, the previous water is slowly discharged, after the solution is discharged, the electric valve for concentrated water 7 is closed, the electric valve for concentrated water circulation 20 is opened, the solution is circulated in the membrane component 16, the circulation starts for 5 minutes,
circulating according to the amount of 1/3 of the set flow for 5-10 minutes;
circulating according to 2/3 of the set flow, and circulating according to the maximum flow after 10 minutes;
meanwhile, detecting the change condition of the PH value, after circulating for 1 hour, closing the positive flushing electric valve 6 and the concentrated water circulating electric valve 20, and stopping the variable frequency pump 23 to soak the solution in the membrane for 1-12 hours;
after the soaking time is up, washing is carried out, the solution in the membrane is washed by a clean water source, the water drainage electric valve 26, the concentrated water electric valve 7, the concentrated water circulation electric valve 20 and the variable frequency pump 23 are opened to fully drain the solution, and the clean membrane and the pipeline are washed by clean water circulation for 20-60 minutes possibly;
finally, starting the direct drinking water device to be in an automatic state, detecting the pressure, conductivity and PH of produced water, comparing the detected pressure, conductivity and PH of the produced water with the initial stable operation state data, and reaching the standard; if the standard is not met, repeating the washing steps.
To facilitate a further understanding of the invention by those skilled in the art, the invention is further described below in conjunction with specific embodiments.
Case one
Referring to fig. 1, the embodiment discloses an intelligent direct drinking water cleaning device, which comprises a circulating water tank 29, wherein an electric mixer 2 is installed at the top of the circulating water tank 29;
the electric stirrer 2 comprises a motor arranged at the top of the circulating water tank 29 and a main shaft connected with the motor, the main shaft is rotatably connected with the circulating water tank 29 and extends into the circulating water tank 29, and stirring blades are arranged on the main shaft to form an upper, middle and lower three-layer stirring structure.
Wherein, the side of the circulating water tank 29 is provided with a PH transducer 25, a liquid level transducer 27, a water supplementing electric valve 1 and a circulating pipe;
further optimization, the water replenishing electric valve 1 is opened, a proper amount of clean water source is put in, then the medicament is put in, and the PH value of the medicament is detected to meet the requirement of the membrane concentration in the membrane washing component 16;
wherein, the bottom of the circulating water tank 29 is provided with a drainage electric valve 26 and a water outlet pipe; a water outlet pipe of the circulating water tank 29 is connected with the variable frequency pump 23, and a stop valve 24 is connected between the circulating water tank 29 and the variable frequency pump 23; the variable frequency pump 23 is sequentially connected with the precision filter 22 and the turbine flowmeter 4, and a pressure transmitter 28 is arranged between the variable frequency pump 23 and the precision filter 22;
in actual use, the water yield is calculated according to the number of membrane groups, and compared with the flow rate of a turbine flowmeter 4, the flow rate is equal;
further optimization, the pressure of the variable frequency pump 23 is adjusted according to the required flow rate, so as to adjust the flow rate;
the water outlet of the turbine flowmeter 4 is connected with the positive washing electric valve 6 and the back washing electric valve 5, and the positive washing electric valve 6 is connected with the back washing electric valve 5 in parallel; the backwashing electric valve 5 is connected with a concentrated water port of the membrane component 16, the forward flushing electric valve 6 is connected with a water inlet of the membrane component 16, and a water inlet conductivity meter 17 is connected between the forward flushing electric valve 6 and the water inlet of the membrane component 16;
when the positive flushing electric valve 6 and the water production circulation electric valve 19 are opened, the water inlet and outlet of the membrane component 16 can be continuously circulated, and the membrane module is always and thoroughly cleaned;
meanwhile, the positive flushing electric valve 6 and the concentrated water circulating electric valve 20 are opened, so that a concentrated water circulating flushing function can be formed;
further optimizing, the electric backwashing valve 5 and the electric inlet valve 21 at the inlet of the membrane component 16 form a backwashing function, and impurities in the membrane are reversely flushed and discharged;
the water inlet of the membrane component 16 is connected with an inlet electric valve 21, and an inlet pressure sensor is also connected between the inlet electric valve and the inlet electric valve; a concentrated water pipe 8 of the membrane component 16 is connected with a concentrated water electric valve 7, and a concentrated water pressure transmitter 15 is arranged between the concentrated water pipe and the concentrated water electric valve; when in flushing, the electric valve 7 for the concentrated water is fully opened to realize low pressure and high flow, and the concentrated water pipe 8 is used as a special pipeline for flushing.
A concentrated water circulation electric valve 20 is connected between the concentrated water outlet of the membrane module 16 and the circulation water tank 29;
a water production circulation electric valve 19 is connected between a water production port of the membrane module 16 and the circulation water tank 29; the water producing port of the membrane component 16 is connected with a water producing electric valve 13, and a water producing pressure transmitter 14 is connected between the water producing electric valve and the water producing electric valve;
the water production electric valve 13 is connected with the remote water meter 10, and a water production conductivity meter 11 and a water production PH transmitter 12 are connected between the water production electric valve and the remote water meter; the remote water meter 10 is connected with a water production pipe 9;
further optimization, in actual use, all the flow passage components are made of stainless steel 304 or stainless steel 304 with a mark above, so that the use safety is ensured;
in actual use, each actuator and sensor, namely: the backwashing electric valve 5, the forward flushing electric valve 6, the water inlet conductivity meter 17, the produced water pressure transmitter 14 and the like are connected into the electric control cabinet 3, and the electric control cabinet host controls the relay to further control each executing electric mechanism; in actual use, the controller or the PLC can be used for controlling, and all the parts can be controlled, which is not described any more.
In the actual use, automatically controlled cabinet has the touch-sensitive screen, can set up and look over various data, conveniently judges and operates each executive components and parts. The water replenishing, positive flushing and back flushing as well as the circulating positive flushing are designed into a full-automatic and one-key operation mode.
The specific cleaning steps are as follows:
checking the instantaneous flow and the water production pressure of the remote water meter 10, comparing the instantaneous flow and the water production pressure with the data in the initial stable operation, judging that the instantaneous flow and the water production pressure are consistent or close to each other, and if the instantaneous flow and the water production pressure are inconsistent, physically cleaning (flushing) the membrane assembly 16;
if the data of the initial stable operation cannot be achieved after the physical cleaning, the equipment alarms and reminds to carry out chemical cleaning (medicine cleaning); meanwhile, checking each executive component, pipeline and valve;
step 2: physical irrigation
The positive washing comprises the following specific steps: opening the water replenishing electric valve 1 to replenish clean produced water into the circulating water tank 29, and simultaneously opening the stop valve 24 to ensure that the water inlet of the variable frequency pump 23 is filled with water and exhausted;
closing the water replenishing electric valve 1 when the circulating water tank 29 is replenished to a set liquid level, simultaneously opening the positive flushing electric valve 6, fully opening the concentrated water electric valve 7, opening the water production electric valve 13, opening the variable frequency pump 23, observing the instantaneous flow of the turbine flowmeter 4 and the pressure change of the concentrated water pressure transmitter 15, debugging the variable frequency pump 23, modifying the pressure, and controlling the water inlet pressure to be below 0.3 Mpa;
if the pressure is below 0.3MPa, the flow is difficult to achieve, the water inlet pressure is controlled as far as possible, and the water cannot be discharged or the produced water is reduced as the standard, and generally the pressure cannot exceed 0.4MPa;
controlling the flow rate to be 1.8-2.5 m/h (the flow rate is determined according to the size of the membrane), increasing the shear force in the horizontal direction in a low-pressure and high-flow-rate mode, flushing pollutants out of a membrane element, and controlling the flushing time to be 10-15 minutes;
the back washing comprises the following specific steps:
opening the water replenishing electric valve 1 to replenish clean produced water into the circulating water tank 29, and simultaneously opening the stop valve 24 to ensure that the water inlet of the variable frequency pump 23 is filled with water and exhausted;
closing the water replenishing electric valve 1 when the circulating water tank 29 is replenished to a set liquid level, simultaneously opening the backwashing electric valve 5, opening the inlet electric valve, and reasonably setting pressure and flow, flushing time and flushing frequency according to the technical requirements and use conditions of the membrane in the membrane module 16 of each manufacturer until impurities in the flushed membrane are clean;
and 3, the chemical cleaning comprises the following specific steps:
firstly, calculating the volume required by a membrane and a pipeline in the membrane component 16, opening a water replenishing electric valve 1 to replenish clean produced water into a circulating water tank 29, then preparing a solution required for cleaning, measuring the pH value of the solution by a pH transmitter 25, and uniformly stirring by an electric stirrer 2 to ensure that the solution reaches the technical index;
then, the stop valve 24 is opened, the solution is filled in the variable frequency pump 23 and exhausted, the electric valve for forward washing is opened, the electric valve for concentrated water 7 is opened, the previous water is slowly discharged until the solution is discharged, the electric valve for concentrated water 7 is closed, the electric valve for concentrated water circulation 20 is opened, the solution is circulated in the membrane component 16, the circulation starts for 5 minutes,
circulating according to the amount of 1/3 of the set flow for 5-10 minutes;
circulating according to 2/3 of the set flow, and circulating according to the maximum flow after 10 minutes;
meanwhile, detecting the change condition of the PH value, after circulating for 1 hour, closing the positive flushing electric valve 6 and the concentrated water circulating electric valve 20, and stopping the variable frequency pump 23 to soak the solution in the membrane for 1 to 12 hours;
after the soaking time is up, the membrane is washed, the solution in the membrane is washed by a clean water source, the drainage electric valve 26, the concentrated water electric valve 7, the concentrated water circulation electric valve 20 and the variable frequency pump 23 are opened to fully drain the solution, and the clean membrane and the pipeline are washed by clean water circulation for 20 to 60 minutes possibly;
finally, starting the direct drinking water device to be in an automatic state, detecting the pressure, the conductivity 11 and the PH of the produced water, comparing the detected pressure, the conductivity and the PH with the initial stable operation state data, and reaching the standard; if the standard is not met, the washing step is repeated.
The invention uses the cleaning device to clean the membrane to meet the target water quality requirement, and adjusts each cleaning method according to the actual requirement. The cleaning device is suitable for online or offline cleaning of the reverse osmosis membrane, the nanofiltration membrane and the ultrafiltration membrane, can be applied to various cleaning solutions, is corrosion-resistant and oxidation-resistant, and is a cleaning device for comprehensive application.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the invention.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, it should be noted that any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The utility model provides a water belt cleaning device is directly drunk to wisdom, includes cleaning system, cleaning system with be used for being connected its characterized in that with straight drinking water processing system:
the cleaning system comprises a circulating water tank, a stop valve, a variable frequency pump, a pressure transmitter, a precision filter, a worm wheel flowmeter, a positive flushing electric valve and a water inlet conductivity meter which are sequentially connected to a water outlet pipe of the circulating water tank, a circulating pipe is arranged between the worm wheel flowmeter and the positive flushing electric valve, the circulating pipe is sequentially provided with a back flushing electric valve and a concentrated water circulating electric valve, and the tail end of the circulating pipe is connected with the circulating water tank;
the water outlet end of the membrane component of the direct drinking water treatment system is connected with a water production circulation electric valve, the water production circulation electric valve is connected with the outlet end of a concentrated water circulation electric valve, and a circulating pipe is communicated with a concentrated water port of the membrane component.
2. The intelligent direct drinking water cleaning device according to claim 1, wherein: and a water replenishing pipe is arranged on the circulating water tank, a water replenishing electric valve is arranged on the water replenishing pipe, and the water replenishing pipe is connected with the circulating pipe.
3. The intelligent direct drinking water cleaning device according to claim 1, wherein: the lower end of the circulating water tank is provided with a drain pipe, and a drain electric valve is arranged on the drain pipe.
4. The intelligent direct drinking water cleaning device according to claim 1, wherein: and a PH transmitter and a liquid level transmitter are arranged on the side surface of the circulating water tank.
5. The intelligent direct drinking water washing device as claimed in claim 1, wherein: and a stirring mechanism is arranged on the circulating water tank.
6. The intelligent direct drinking water cleaning device according to claim 5, wherein: the stirring mechanism is an electric stirrer.
7. The intelligent direct drinking water cleaning device according to claim 1, wherein: and a pressure transmitter is arranged between the variable frequency pump and the precision filter.
8. The intelligent direct drinking water cleaning device according to claim 1, wherein: an inlet pressure transmitter and a first TDS detector are arranged between the water inlet of the membrane component and the inlet electric valve; the concentrated water port of the membrane component is connected with a concentrated water electric valve, and a concentrated water pressure transmitter is arranged between the concentrated water electric valve and the concentrated water port of the membrane component.
9. The intelligent direct drinking water cleaning device according to claim 1, wherein: the water production port of the membrane component is sequentially connected with a water production pressure transmitter, a water production electric valve, a water production PH transmitter, a water production conductivity meter and a remote water meter, and the tail end of the remote water meter is connected with a water production pipe.
10. An intelligent direct drinking water cleaning method is characterized by comprising the following steps:
step 1, preparation:
checking the instantaneous flow and the water production pressure of the remote water meter to compare with the data in initial stable operation, judging that the instantaneous flow and the water production pressure are consistent or close, and if the instantaneous flow and the water production pressure are inconsistent, physically cleaning the membrane module;
if the data of the initial stable operation cannot be achieved after the physical cleaning, the equipment alarms and reminds to carry out chemical cleaning;
step 2: flushing, wherein the flushing comprises physical cleaning and chemical cleaning, the physical cleaning comprises positive flushing and back flushing,
the positive washing comprises the following specific steps:
opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, and simultaneously opening a stop valve to ensure that a water inlet of the variable frequency pump 3 is filled with water and exhausted;
when the circulating water tank is supplied to a set liquid level, closing the water supply electric valve, simultaneously opening the positive flushing electric valve, fully opening the concentrated water electric valve, opening the water production electric valve, opening the variable frequency pump, observing the instantaneous flow of the turbine flowmeter and the pressure change of the concentrated water pressure transmitter, debugging the variable frequency pump, modifying the pressure, and controlling the water inlet pressure to be below 0.3 Mpa;
if the pressure is below 0.3Mpa, the flow rate is difficult to achieve, the water inlet pressure is controlled as much as possible, and the water cannot be produced or produced less is taken as the standard, and generally the pressure cannot exceed 0.4Mpa;
controlling the flow rate to be 1.8-2.5 m/h, increasing the horizontal shearing force in a low-pressure and high-flow-rate mode, and flushing pollutants out of a membrane element for 10-15 minutes;
the back washing comprises the following specific steps:
opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, and simultaneously opening a stop valve to ensure that a water inlet of the variable frequency pump is filled with water and exhausted;
closing the water replenishing electric valve when the circulating water tank is replenished to a set liquid level, simultaneously opening the backwashing electric valve, opening the inlet electric valve, and reasonably setting pressure and flow, flushing time and flushing frequency according to the technical requirements and use conditions of the membrane in the membrane module of each manufacturer until impurities in the flushed membrane are clean;
the chemical cleaning method comprises the following specific steps:
firstly, calculating the volume required by a membrane and a pipeline in a membrane component, opening a water replenishing electric valve to replenish clean produced water into a circulating water tank, then preparing a solution required for cleaning, measuring the pH value of the solution by using a pH transmitter 5, and uniformly stirring by using an electric stirrer to ensure that the solution reaches the technical index;
then, the stop valve is opened, the solution is filled in the variable frequency pump and exhausted, the electric valve for forward washing is opened, the electric valve for concentrated water is opened to allow the previous water to be slowly discharged, the electric valve for concentrated water is closed after the solution is discharged, the electric valve for concentrated water circulation is opened to allow the solution to circulate in the membrane component, the circulation starts for 5 minutes,
circulating according to the amount of 1/3 of the set flow for 5-10 minutes;
circulating according to 2/3 of the set flow, and circulating according to the maximum flow after 10 minutes;
meanwhile, detecting the change condition of the PH value, after circulating for 1 hour, closing the positive flushing electric valve and the concentrated water circulating electric valve, and stopping the variable frequency pump to soak the solution in the membrane for 1-12 hours;
after the soaking time is up, the membrane is washed, the solution in the membrane is washed by a clean water source, the drainage electric valve, the concentrated water circulation electric valve and the variable frequency pump are opened to fully drain the solution, and the clean membrane and the pipeline are washed by clean water circulation for 20 to 60 minutes possibly;
finally, starting the direct drinking water device to be in an automatic state, detecting the produced water pressure, the produced water conductivity and the PH, and comparing the detected values with the initial stable operation state data to reach the standard; if the standard is not met, repeating the washing steps.
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| CN202211432653.8A CN115745084A (en) | 2022-11-16 | 2022-11-16 | Intelligent direct drinking water cleaning device and method |
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| CN202211432653.8A CN115745084A (en) | 2022-11-16 | 2022-11-16 | Intelligent direct drinking water cleaning device and method |
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