CN103864230A - Scaling inhibitor adding control system, method and device as well as sewage treatment equipment - Google Patents
Scaling inhibitor adding control system, method and device as well as sewage treatment equipment Download PDFInfo
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- CN103864230A CN103864230A CN201410078295.4A CN201410078295A CN103864230A CN 103864230 A CN103864230 A CN 103864230A CN 201410078295 A CN201410078295 A CN 201410078295A CN 103864230 A CN103864230 A CN 103864230A
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Abstract
The invention relates to the technical field of sewage treatment, and discloses a scaling inhibitor adding control system, a scaling inhibitor adding control method and a scaling inhibitor adding control device as well as sewage treatment equipment, for reasonably adding a scaling inhibitor so as to improve the working reliability of the sewage treatment equipment and decrease the sewage treatment cost. The scaling inhibitor adding control system comprises a speed governing pump for pumping the scaling inhibitor and a control device which is in signal connection with the speed governing pump, wherein the control device is used for outputting a first rate control signal so as to control the speed governing pump to be at the first setting pumping rate when the accumulated working time of a membrane column is not greater than a set time threshold, and is also used for obtaining a second pumping rate according to the corresponding relationship between the accumulated working time of the membrane column and the second pumping rate when the accumulated working time of the membrane column is greater than the set time threshold and outputting a second rate control signal to control the speed governing pump to be at the second pumping rate.
Description
Technical field
The present invention relates to technical field of sewage, particularly relate to a kind of Scale inhibitors and add Controlling System, method, device and a kind of sewage disposal device.
Background technology
Physical chemistry treatment technology, rayed technology and membrane separation technique are called as three large water technologies.Wherein, membrane separation technique be by film to the chemosmotic difference of the selection of each component in mixture, take outside energy or chemical potential difference as impellent to the liquid of two components or multicomponent mixture separate, the method for classification, purification and enrichment.
For the processing of percolate from garbage filling field, if reach national grade one discharge standard, two-stage osmosis system is generally provided, sewage disposal device comprises one-level osmosis system, secondary osmosis system, percolate storage tank and Scale inhibitors container etc., wherein, in Scale inhibitors container, be also provided with Scale inhibitors pump.
Film post, as the core component of osmosis system, mainly comprises diaphragm, flow guiding disc, O type rubber ring, center pull rod and pressure jacket etc.Film post there will be scale formation in work after for some time, makes before film post pressure raise more and plugging can have influence on the normal work of equipment when serious.In prior art, in order to prevent that the fouling of film post from seriously affecting the normal work of equipment, in the time that osmosis system is worked, Scale inhibitors pump adds Scale inhibitors with fixed rate.
Present inventor's discovery, in prior art, Scale inhibitors pump adds Scale inhibitors with fixed rate, very easily causes Scale inhibitors to add very few and makes descale effect poor, causes equipment normally to work; Or Scale inhibitors adds ground too much wastes Scale inhibitors, causes cost of sewage disposal too high.
Summary of the invention
The invention provides a kind of Scale inhibitors and add Controlling System, method, device and a kind of sewage disposal device, in order to reasonable interpolation Scale inhibitors, thereby improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
Scale inhibitors provided by the invention adds Controlling System, comprising:
The governor impeller of pumping Scale inhibitors;
Control device, is connected with described governor impeller signal, and in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
In technical solution of the present invention, in the time that the accumulative total working hour of film post is not more than the time threshold of setting, control device control governor impeller adds Scale inhibitors with the first pump rate; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, control device control governor impeller adds Scale inhibitors with the second pump rate.Control device regulates governor impeller to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post automatically, regulate the addition of Scale inhibitors, in can ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, thereby improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
Preferably, whether this Scale inhibitors adds Controlling System and also comprises more substitution detector of diaphragm, be replaced for detection of the diaphragm of film post;
Described control device, further with described diaphragm more substitution detector signal be connected, in the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
In the time that control device receives the information that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post, can record more exactly the actual accumulative total working hour when cephacoria post in osmosis system, thereby improve the control accuracy of the addition of Scale inhibitors additive.
Preferably, this Scale inhibitors adds Controlling System and also comprises and also comprise pH value proofing unit, for detection of the water inlet pH value of osmosis system;
Described control device, further be connected with described pH value proofing unit signal, for obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
Control device can further regulate the pump rate of governor impeller according to the water inlet pH value of osmosis system, thereby reasonably regulates the addition of Scale inhibitors, in improving the reliability of sewage disposal device work, reduces cost of sewage disposal.
Preferably, this Scale inhibitors adds Controlling System and also comprises: the first pressure transmitter and the second pressure transmitter, the interval time that is respectively used to set pressure after pressure and film post before synchronous detection film post;
Described control device, is further connected with described the first pressure transmitter and the second pressure sensor signal, for determine the velocity of variation of film post front and back pressure according to pressure after pressure before film post and film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
In technique scheme, control device can further regulate the pump rate of governor impeller according to the velocity of variation of pressure before and after film post, thereby further effectively regulates the addition of Scale inhibitors, in the reliability that improves sewage disposal device work.
Preferably, this Scale inhibitors interpolation Controlling System also comprises:
Liquid level detection device, for detection of the Scale inhibitors liquid level in Scale inhibitors container;
Warning device, reminds for sending the alarm message that adds Scale inhibitors;
Described control device, is further connected with described liquid level detection device and warning device signal, for drop to when Scale inhibitors liquid level the first warning liquid level and continue set the first alert time time, output alarm signal.
Adopt technique scheme, in the time that the liquid level in Scale inhibitors container drops to the first warning liquid level and continues the first alert time of setting, can remind staff to add Scale inhibitors, effectively ensured the reliability that sewage disposal device works long hours.
Preferably, this Scale inhibitors interpolation Controlling System also comprises:
Described control device, be further used in the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system orderly closedown.
Adopt technique scheme, can effectively prevent from causing the fouling plugging of film post or diaphragm to damage because operator manage dereliction of duty; Until operator add Scale inhibitors while exceeding the first warning liquid level, osmosis system can start again, thereby has effectively ensured the reliability that sewage disposal device works long hours.
Based on identical inventive concept, the present invention also provides a kind of sewage disposal device, comprises at least one-level osmosis system, and the corresponding Scale inhibitors as described in aforementioned arbitrary technical scheme of every one-level osmosis system adds Controlling System.
The sewage disposal device providing can rationally add Scale inhibitors, improves the reliability of sewage disposal device work, and reduces cost of sewage disposal.
Based on identical inventive concept, the present invention also provides a kind of Scale inhibitors to add control method, comprising:
In the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting;
In the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
This Scale inhibitors adds control method and can automatically regulate governor impeller to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post, thereby can be in ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, and then improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
Based on identical inventive concept, the present invention also provides a kind of Scale inhibitors to add control device, comprising:
The first operating device, in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting;
The second operating device, for in the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
The device providing can regulate governor impeller to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post automatically, thereby can be in ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, and then improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
Accompanying drawing explanation
Fig. 1 is that first embodiment of the invention Scale inhibitors adds Controlling System structural representation;
Fig. 2 is that second embodiment of the invention Scale inhibitors adds Controlling System structural representation;
Fig. 3 is that third embodiment of the invention Scale inhibitors adds Controlling System structural representation;
Fig. 4 is that another embodiment of the present invention Scale inhibitors adds Controlling System structural representation;
Fig. 5 is that one embodiment of the invention Scale inhibitors adds control method schematic flow sheet;
Fig. 6 is that one embodiment of the invention Scale inhibitors adds control device structural representation;
Fig. 7 is that another embodiment of the present invention Scale inhibitors adds control device structural representation.
Reference numeral:
More substitution detector of 10-governor impeller 11-control device 12-diaphragm
13-PH value detection device
14-first pressure transmitter 15-the second pressure transmitter
16-liquid level detection device 18-warning device 19-osmosis system
20-first operating device 21-the second operating device 22-the 3rd operating device
23-the 4th operating device 24-the 5th operating device
Embodiment
In order rationally to add Scale inhibitors, improve the reliability of sewage disposal device work, and reduce cost of sewage disposal, the embodiment of the present invention provides a kind of Scale inhibitors to add Controlling System, method, device and a kind of sewage disposal device.Add in Controlling System at this Scale inhibitors, control device is in the time that the accumulative total working hour of film post is not more than the time threshold of setting, and control device control governor impeller adds Scale inhibitors in the first pump rate; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, control device control governor impeller adds Scale inhibitors in the second pump rate.Control device regulates the pump rate of governor impeller automatically according to the accumulative total working hour of film post, thereby regulates the addition of Scale inhibitors, can rationally add Scale inhibitors, thereby improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.Below with specific embodiment and be described with reference to the accompanying drawings the present invention.
As shown in Figure 1, the Scale inhibitors that first embodiment of the invention provides adds Controlling System, comprising:
The governor impeller 10 of pumping Scale inhibitors;
Control device 11, is connected with governor impeller 10 signals, and in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of governor impeller 10 in setting; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control governor impeller 10 in the second pump rate.
The particular type of governor impeller 10 is not limit, do not do concrete restriction at this, it can be for example peristaltic pump, because peristaltic pump has pollution-free, the advantage that control accuracy is high, and peristaltic pump has peristaltic pump speed controller conventionally, can accurately control the rotating speed of peristaltic pump or the internal diameter of pump line and regulate the speed of pumping.In the time that osmosis system is disposed of sewage, governor impeller material should select corrosion resistant material; The specific form of control device 11 is not limit, and can be Personal Computer, or programmable logic controller.
In osmosis system working process, the diaphragm of film post is along with the increase of accumulative total working hour, and the pollution level of diaphragm can increase the weight of thereupon, at this moment needs the addition of the Scale inhibitors suitably increasing.The time threshold of setting is specifically determined according to the diaphragm material of film post and handled water quality, for example, the time threshold of setting is set as 200 hours, when totally the working hour is in 200 hours, the diaphragm of film post is in good condition, a small amount of Scale inhibitors that adds just can ensure scale inhibition effect, makes the diaphragm of film post in good condition; In the time that the accumulative total working hour exceedes 200 hours, the pollution level of diaphragm is heavier, suitably increases the addition of Scale inhibitors to ensure scale inhibition effect.
Concrete, the accumulative total working hour of film post and the corresponding relation of the second pump rate are not limit, for example, be specially
Wherein, V
2be the second pump rate, V
0be the first pump rate, T1 is the accumulative total working hour of film post, and t is accumulative total working hour threshold value, and
round Δ V
1for the first pump rate increment of setting, the first pump rate, the first pump rate increment are specifically determined according to the diaphragm material of film post and experience, are not specifically limited at this;
After osmosis system starts, start the accumulative total working hour of recording film post, in the time that the accumulative total working hour of film post is not more than the time threshold of setting, control device 11 is controlled governor impeller 10 and is added Scale inhibitors in the first pump rate pumping; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, control device 11 is controlled governor impeller 10 and is added Scale inhibitors in the second pump rate pumping.Control device 11 regulates governor impeller 10 to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post automatically, regulate the addition of Scale inhibitors, in can ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, and then improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
As shown in Figure 2, whether the Scale inhibitors that second embodiment of the invention provides adds Controlling System, also comprises more substitution detector 12 of diaphragm, be replaced for detection of the diaphragm of film post;
Control device 11, further with diaphragm more substitution detector 12 signals be connected, in the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
In the time that control device 11 receives the information that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post, can record more exactly the actual accumulative total working hour when cephacoria post in osmosis system, thereby improve the control accuracy of the addition of Scale inhibitors additive.
As shown in Figure 3, on the basis of the first embodiment, the Scale inhibitors that third embodiment of the invention provides adds Controlling System, also comprises pH value proofing unit 13, for detection of the water inlet pH value of osmosis system;
Control device 11, further be connected with pH value proofing unit 13 signals, for obtain the 3rd pump rate of governor impeller 10 according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls governor impeller 10 in the 3rd pump rate.
In the present embodiment, control device 11 can further regulate the pump rate of governor impeller 10 according to the water inlet pH value of osmosis system, thereby further rationally regulate the addition of Scale inhibitors, in improving the reliability of sewage disposal device work, reduce cost of sewage disposal.
Particularly, water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate are specially
Wherein, V
3be the 3rd pump rate, V
0be the first pump rate, T1 is the accumulative total working hour of film post, and t is the time threshold of setting, and
round Δ V
2for the second pump rate increment of setting, K
1be the second pump rate increment coefficient, in the time of PH<4, K
1=-2, in the time of 4≤PH≤6.5, K
1=-1, in the time of 7.5≤PH<10, K
1=1, in the time of PH>=10, K
1=2, in the time of 6.5<PH<7.5, K
1=0.
In the time of PH≤6.5, the acidity of the water inlet of osmosis system is stronger, specifically suitably reduces the addition of Scale inhibitors according to its acid intensity, in can effectively guaranteeing scale inhibition effect, saves Scale inhibitors; In the time of PH >=7.5, the alkalescence of the water inlet of osmosis system is stronger, specifically suitably increases the addition of Scale inhibitors according to its alkaline intensity, thereby can further effectively ensure scale inhibition effect, therefore further improve the reliability of sewage disposal device work, and reduced cost of sewage disposal.
The specific form of pH value proofing unit 13 is not limit, for example, can be PH sensor, or PH detector; The second pump rate increment is specifically determined according to the diaphragm material of film post and experience, is not specifically limited at this.
Shown in Fig. 4, on the basis of the 3rd embodiment, Scale inhibitors that fourth embodiment of the invention provides adds Controlling System, also comprises the first pressure transmitter 14 and the second pressure transmitter 15, the interval time that is respectively used to set pressure after pressure and film post before synchronous detection film post;
Control device 11, is further connected with the first pressure transmitter 14 and the second pressure transmitter 15 signals, for determine the velocity of variation of film post front and back pressure according to pressure after pressure before film post and film post; The velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of setting before and after the film post, obtain the 4th pump rate of governor impeller 10 according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control governor impeller in the 4th pump rate.
In the present embodiment, be specifically rule of thumb defined as T2 the interval time of setting, for example T2=5 minute, within K interval time, the first pressure transmitter 14 and the second pressure transmitter 15 respectively front pressure of film post of synchronous detection are P1
kwith pressure after film post be P2
k,, before and after film post, the velocity of variation of pressure is (P1
k-P2
k)/P1
k; The velocity of variation threshold value of setting is specifically definite according to the diaphragm material of film post and experience, is not specifically limited at this, and for example, the velocity of variation threshold value of setting is 1/3.
Control device 11 can further regulate the pump rate of governor impeller 10 according to the velocity of variation of pressure before and after film post.As (P1
k-P2
k)/P1
kbe not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of setting, the diaphragm of the film post of osmosis system pollutes comparatively serious, scaling tendency is obvious, control device 11 is controlled governor impeller 10 and is added Scale inhibitors with the 4th pump rate, suitably increase the addition of Scale inhibitors, effectively strengthen scale inhibition effect, improved the reliability that sewage disposal device works long hours; In the time strengthening the addition of Scale inhibitors, scale removal for some time, make the velocity of variation of pressure before and after film post be less than the velocity of variation threshold value of setting or time length while being less than the interval time of setting, the diaphragm that is film post pollutes when lighter, control governor impeller and add Scale inhibitors with the 3rd pump rate, suitably reduce the addition of Scale inhibitors, thereby reduce cost of sewage disposal.
Particularly, the corresponding relation of the 3rd pump rate and the 4th pump rate is specially V
4=V
3+ Δ V
3,
Wherein, V
4be the 4th pump rate, V
3be the 3rd pump rate, Δ V
3for the 3rd pump rate increment of setting, the 3rd pump rate increment is specifically determined according to the diaphragm material of film post and experience, is not specifically limited at this.
Continue with reference to shown in Fig. 4, the Scale inhibitors that fifth embodiment of the invention provides adds Controlling System, also comprises:
Liquid level detection device 16, for detection of the Scale inhibitors liquid level in Scale inhibitors container;
Warning device 18, reminds for sending the alarm message that adds Scale inhibitors;
Control device 11, is further connected with liquid level detection device 16 and warning device 18 signals, for drop to when Scale inhibitors liquid level the first warning liquid level and continue set the first alert time time, output alarm signal.
In the time that the liquid level in Scale inhibitors container drops to the first warning liquid level and continues the first alert time of setting, control device 11 output alarm signals, warning device 18 sends alarm message, for example sound or light warning, to remind staff to add Scale inhibitors, and control governor impeller and still add Scale inhibitors with current pump rate, effectively ensure the reliability that sewage disposal device works long hours.
The Scale inhibitors that fifth embodiment of the invention provides adds Controlling System, control device 11, be further used in the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of governor impeller 10 in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system 19 orderly closedowns.
In the time that the liquid level in Scale inhibitors container drops to the first warning liquid level and continues the first alert time of setting, staff does not add Scale inhibitors, when liquid level in Scale inhibitors container drops to the second warning liquid level and continues the second alert time of setting, control governor impeller 10 with safety pump transmission rate and continue the safety time of setting, and export orderly closedown signal simultaneously, control osmosis system 19 and shut down according to orderly safety standard flow sequence, can effectively prevent from causing the fouling plugging of film post or diaphragm to damage because operator manage dereliction of duty; Until operator add Scale inhibitors while exceeding the first warning liquid level, osmosis system can start again, thereby has effectively ensured the reliability that sewage disposal device works long hours.
Above-described embodiment is as a preferably embodiment of the present invention, can also be for example, at the first warning liquid level place and the second warning liquid level place, two liquid level detection devices are set respectively, the specific form of liquid level detection device is not limit, for example can be for thering is the liquid level sensor of switch contact, in the time that Scale inhibitors liquid level in Scale inhibitors container arrives the set warning liquid level of liquid level sensor, the closing of contact of liquid level sensor, the signal that control device sends according to liquid level sensor specifically regulates the pump rate of governor impeller.
The first warning liquid level and the second warning liquid level are as the criterion definite with equipment safety operation according to unit type, the first alert time is specifically rule of thumb determined, does not do concrete restriction at this, for example, can be 5 seconds; The second alert time is specifically rule of thumb determined, does not do concrete restriction at this, for example, can be 10 seconds; Safety pump transmission rate and safety time are specifically determined according to sewage disposal device; governor impeller adds Scale inhibitors with safety pump transmission rate; so that the safety time that also sustainable interpolation is set of the Scale inhibitors in Scale inhibitors container; the safety time of setting is not less than the time that equipment normal sequence is shut down; for example; in the time comprising one-level osmosis system and secondary osmosis system, equipment normal sequence is shut down and is generally 25 minutes, and the safety time of setting can be 30 minutes.
As shown in Figure 5, based on identical inventive concept, the embodiment of the present invention also provides a kind of Scale inhibitors to add control method, comprising:
Step 501: judge that the accumulative total working hour of film post is not more than the time time threshold of setting, if so, execution step 502, otherwise, execution step 503;
Step 502: output first rate control signal, control first pump rate of governor impeller in setting
Step 503: the second pump rate that obtains governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate;
Step 504: output the second rate-controlling signal, control governor impeller in the second pump rate.
The Scale inhibitors that the present embodiment provides adds control method and can automatically regulate governor impeller to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post, thereby regulate the addition of Scale inhibitors, thereby can be in ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, and then improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
As the present invention's one preferred embodiment, this Scale inhibitors adds control method and also comprises:
In the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
As the present invention's one preferred embodiment, this Scale inhibitors adds control method and also comprises:
Obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
As the further preferred embodiment of the present invention, this Scale inhibitors adds control method and also comprises:
Determine the velocity of variation of film post front and back pressure according to pressure after pressure before film post and film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
As the present invention's one preferred embodiment, this Scale inhibitors adds control method and also comprises:
In the time that Scale inhibitors liquid level drops to the first warning liquid level and continues the first alert time of setting, output alarm signal.
Preferably, this Scale inhibitors interpolation control method also comprises:
In the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system and shut down.
The beneficial effect of each embodiment is the same above, and it is no longer repeated here.
As shown in Figure 6, based on same inventive concept, the embodiment of the present invention also provides a kind of Scale inhibitors to add control device, comprising:
The first operating device 20, in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting;
The second operating device 21, for in the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
The control device that the present embodiment provides can regulate governor impeller to add the pump rate of Scale inhibitors according to the accumulative total working hour of film post automatically, thereby regulate the addition of Scale inhibitors, thereby can be in ensureing scale inhibition effect, effectively reduce the total addition level of Scale inhibitors, and then improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
As shown in Figure 7, as the present invention's one preferred embodiment, this Scale inhibitors adds control device and also comprises:
The 3rd operating device 22, in the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
Shown in Fig. 7, as another preferred embodiment of the present invention, this Scale inhibitors adds control device and also comprises: the 4th operating device 23, for obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
Further, the 4th operating device 23, is further used for determining according to pressure after pressure before film post and film post the velocity of variation of pressure before and after film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
Preferably, this Scale inhibitors adds control device and also comprises: the 5th operating device 24, and when dropping to the first warning liquid level when Scale inhibitors liquid level and continue the first alert time of setting, output alarm signal.
As the another preferred embodiment of the present invention, the 5th operating device 24, be further used in the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system and shut down.
The beneficial effect of each embodiment is the same above, and it is no longer repeated here.
In addition, the each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and also can adopt the form of software function module to realize.If described integrated module realizes and during as production marketing independently or use, also can be stored in a computer read/write memory medium using the form of software function module.
The embodiment of the present invention also provides a kind of sewage disposal device, comprises at least one-level osmosis system, and every one-level osmosis system is corresponding as the Scale inhibitors of aforementioned arbitrary embodiment adds Controlling System.The sewage disposal device providing can rationally add Scale inhibitors, improves the reliability of sewage disposal device work, and reduces cost of sewage disposal.The particular type of sewage disposal device is not limit, for example, can be wastewater treatment vehicle.
When the sewage disposal device providing when the embodiment of the present invention comprises one-level osmosis system and secondary osmosis system, control device is according to the accumulative total working hour of film post, the water inlet PH of osmosis system, liquid level before and after film post in velocity of variation and the Scale inhibitors container of pressure can regulate the pump rate of governor impeller automatically, thereby regulate the addition of Scale inhibitors, and when the liquid level in Scale inhibitors container is during lower than the second warning liquid level, sewage disposal device orderly closedown, thereby make this sewage disposal device compared to prior art without the time lengthening of disorderly closedown about 33%, this sewage disposal device within average about 210 hours, extend to 300 hours without disorderly closedown, the average monthly usage amount saving about 11% of Scale inhibitors, effectively improve the reliability of sewage disposal device work, and reduce cost of sewage disposal.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (22)
1. Scale inhibitors adds a Controlling System, it is characterized in that, comprising:
The governor impeller of pumping Scale inhibitors;
Control device, is connected with described governor impeller signal, and in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting; In the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
2. whether Scale inhibitors as claimed in claim 1 adds Controlling System, it is characterized in that, also comprises more substitution detector of diaphragm, be replaced for detection of the diaphragm of film post;
Described control device, further with described diaphragm more substitution detector signal be connected, in the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
3. Scale inhibitors as claimed in claim 1 adds Controlling System, it is characterized in that, also comprises pH value proofing unit, for detection of the water inlet pH value of osmosis system;
Described control device, further be connected with described pH value proofing unit signal, for obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
4. Scale inhibitors as claimed in claim 3 adds Controlling System, it is characterized in that, also comprises:
The first pressure transmitter and the second pressure transmitter, the interval time that is respectively used to set pressure after pressure and film post before synchronous detection film post;
Described control device, is further connected with described the first pressure transmitter and the second pressure sensor signal, for determine the velocity of variation of film post front and back pressure according to pressure after pressure before film post and film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
5. the Scale inhibitors as described in as arbitrary in claim 1～4 adds Controlling System, it is characterized in that, also comprises:
Liquid level detection device, for detection of the Scale inhibitors liquid level in Scale inhibitors container;
Warning device, reminds for sending the alarm message that adds Scale inhibitors;
Described control device, is further connected with described liquid level detection device and warning device signal, for drop to when Scale inhibitors liquid level the first warning liquid level and continue set the first alert time time, output alarm signal.
6. Scale inhibitors as claimed in claim 5 adds Controlling System, it is characterized in that,
Described control device, be further used in the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system orderly closedown.
7. a sewage disposal device, is characterized in that, comprises at least one-level osmosis system, and the corresponding Scale inhibitors as described in claim 1～6 any one of every one-level osmosis system adds Controlling System.
8. Scale inhibitors adds a control method, it is characterized in that, comprising:
In the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting;
In the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
9. Scale inhibitors as claimed in claim 8 adds control method, it is characterized in that, the accumulative total working hour of described film post and the corresponding relation of the second pump rate are specially:
Wherein, V
2be the second pump rate, V
0be the first pump rate, T1 is the accumulative total working hour of film post, and t is the time threshold of setting, and
round Δ V
1for the first pump rate increment of setting.
10. Scale inhibitors as claimed in claim 8 adds control method, it is characterized in that, also comprises:
In the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
11. Scale inhibitorss as claimed in claim 8 add control method, it is characterized in that, also comprise:
Obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
12. Scale inhibitorss as claimed in claim 11 add control method, it is characterized in that, the accumulative total working hour of described water inlet pH value, film post and the corresponding relation of the 3rd pump rate are specially:
Wherein, V
3be the 3rd pump rate, V
0be the first pump rate, T1 is the accumulative total working hour of film post, and t is the time threshold of setting, and
round Δ V
2for the second pump rate increment of setting, K
1be the second pump rate increment coefficient, in the time of PH<4, K
1=-2, in the time of 4≤PH≤6.5, K
1=-1, in the time of 7.5≤PH<10, K
1=1, in the time of PH>=10, K
1=2, in the time of 6.5<PH<7.5, K
1=0.
13. Scale inhibitorss as claimed in claim 11 add control method, it is characterized in that, also comprise:
Determine the velocity of variation of film post front and back pressure according to pressure after pressure before film post and film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
14. Scale inhibitorss as claimed in claim 13 add control method, it is characterized in that, the corresponding relation of described the 3rd pump rate and the 4th pump rate is specially:
V
4=V
3+ΔV
3，
Wherein, V
4be the 4th pump rate, V
3be the 3rd pump rate, Δ V
3for the 3rd pump rate increment of setting.
15. Scale inhibitorss as described in as arbitrary in claim 8～14 add control method, it is characterized in that, also comprise:
In the time that Scale inhibitors liquid level drops to the first warning liquid level and continues the first alert time of setting, output alarm signal.
16. Scale inhibitorss as claimed in claim 15 add control method, it is characterized in that, also comprise:
In the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system orderly closedown.
17. 1 kinds of Scale inhibitorss add control device, it is characterized in that, comprising:
The first operating device, in the time that the accumulative total working hour of film post is not more than the time threshold of setting, output first rate control signal, controls first pump rate of described governor impeller in setting;
The second operating device, for in the time that the accumulative total working hour of film post is greater than the time threshold of setting, obtain the second pump rate of governor impeller according to the corresponding relation of the accumulative total working hour of film post and the second pump rate, export the second rate-controlling signal, control described governor impeller in the second pump rate.
18. Scale inhibitorss as claimed in claim 17 add control device, it is characterized in that, also comprise:
The 3rd operating device, in the time that the diaphragm of film post is replaced, by the accumulative total working hour zero clearing of film post.
19. Scale inhibitorss as claimed in claim 17 add control device, it is characterized in that, also comprise:
The 4th operating device, for obtain the 3rd pump rate of governor impeller according to water inlet pH value, the accumulative total working hour of film post and the corresponding relation of the 3rd pump rate, output third speed control signal, controls described governor impeller in the 3rd pump rate.
20. Scale inhibitorss as claimed in claim 19 add control device, it is characterized in that,
Described the 4th operating device, is further used for determining according to pressure after pressure before film post and film post the velocity of variation of pressure before and after film post; Before and after described film post, the velocity of variation of pressure is not less than the velocity of variation threshold value of setting and time length while being not less than the interval time of described setting, obtain the 4th pump rate of governor impeller according to the corresponding relation of the 3rd pump rate and the 4th pump rate, export four-speed rate control signal, control described governor impeller in the 4th pump rate.
21. Scale inhibitorss as described in as arbitrary in claim 17～20 add control device, it is characterized in that, also comprise:
The 5th operating device, for drop to when Scale inhibitors liquid level the first warning liquid level and continue set the first alert time time, output alarm signal.
22. Scale inhibitorss as claimed in claim 21 add control device, it is characterized in that,
Described the 5th operating device, be further used in the time that Scale inhibitors liquid level drops to the second warning liquid level and continues the second alert time of setting, output safety rate-controlling signal, control safety pump transmission rate the lasting safety time set of described governor impeller in setting, wherein, described the second warning liquid level is lower than described the first warning liquid level; And export orderly closedown signal simultaneously, control osmosis system and shut down.
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