CN110124520A - A kind of power plant's reverse osmosis membrane concentration rate control system - Google Patents
A kind of power plant's reverse osmosis membrane concentration rate control system Download PDFInfo
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- CN110124520A CN110124520A CN201910397376.3A CN201910397376A CN110124520A CN 110124520 A CN110124520 A CN 110124520A CN 201910397376 A CN201910397376 A CN 201910397376A CN 110124520 A CN110124520 A CN 110124520A
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- 239000012528 membrane Substances 0.000 title claims abstract description 110
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 100
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 425
- 238000000034 method Methods 0.000 claims abstract description 104
- 230000008569 process Effects 0.000 claims abstract description 102
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 239000002351 wastewater Substances 0.000 claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 claims description 43
- 150000003839 salts Chemical class 0.000 claims description 31
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 28
- 238000011084 recovery Methods 0.000 claims description 14
- 239000000084 colloidal system Substances 0.000 claims description 13
- 238000011897 real-time detection Methods 0.000 claims description 13
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 12
- 238000012954 risk control Methods 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 11
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 3
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- 238000010586 diagram Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
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- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
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- 239000000126 substance Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 and treated Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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- 238000010612 desalination reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/025—Reverse osmosis; Hyperfiltration
- B01D61/026—Reverse osmosis; Hyperfiltration comprising multiple reverse osmosis steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/04—Oxidation reduction potential [ORP]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/42—Liquid level
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
-
- 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
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention belongs to technical field of waste water processing, in particular to a kind of power plant's reverse osmosis membrane concentration rate control system, including film process unit, water producing tank, concentrated water case, detection instrument and control unit；Waste water produces water and enters water producing tank, concentrated water enters concentrated water case, and the concentrated water that concentration rate is less than default concentration rate value turns again in water inlet pipe through drainpipe, return pipe, and detection instrument is for detecting water quality, and control unit is for controlling operation after film process cell processing.The present invention can be avoided delay when manual control valve by detection instrument and control unit detection, the operation of control film process unit, and the concentration rate of film process unit is stablized, and so as to extend the service life of film process unit, save power plant's operating cost.Simultaneously, additionally it is possible to the links of power plant's reverse osmosis membrane concentration rate control system operation be managed, to control the operating status of film process unit, operation early warning and operation risk, also have the characteristics that control ability is strong.
Description
Technical field
The invention belongs to technical field of waste water processing, specifically, the present invention relates to a kind of concentrations times of power plant's reverse osmosis membrane
Rate control system.
Background technique
Currently, when carrying out concentration decrement treatment to power plant effluent, being generallyd use reverse osmosis in waste water from power plant field
The membrane technologies such as film, permoselective membrane (positive infiltration), electrically-driven ion film are concentrated.In the operational process of membranous system, need
Will water inlet situation, operation conditions to membranous system be monitored to extend the service life of membranous system so that membranous system stablize fortune
Row.Reverse osmosis membrane membranous system concentration rate control in, power plant often through manual control film concentration systems concentration rate,
Not only cause artificial waste, also result in concentrated water draining water quality and water it is unstable.Furthermore artificial sample measurement concentration
The multiplying power period is long, and manual control valve has delay, causes the fluctuation of membranous system concentration rate big, cannot stablize in controlling value, thus
Membranous system service life is caused to shorten, power plant's operation and investment cost increase, also, lack the monitoring to membranous system, nothing at present
Method understands in real time, controls the operation of membranous system.
Summary of the invention
The present invention provides a kind of power plant's reverse osmosis membrane concentration rate control system, can not only solve anti-in the prior art
The unstable technical problem of permeable membrane concentration rate, moreover it is possible to solve the technical issues of reverse osmosis membrane lacks control in the prior art.
To solve the above-mentioned problems, the present invention provides a kind of power plant's reverse osmosis membrane concentration rate control system, technologies
Scheme is as follows:
A kind of power plant's reverse osmosis membrane concentration rate control system comprising: film process unit, water producing tank, concentrated water case, detection instrument
And control unit；The film process unit introduces waste water by water inlet pipe, is connected by water producing pipe with the water producing tank, passes through row
Water pipe is connected with the concentrated water case, and the drainpipe is connected by return pipe with the water inlet pipe, and the return pipe is equipped with water
Pump；The water inlet pipe, the water producing pipe, the drainpipe, is equipped with the detection on the concentrated water case at the film process unit
Instrument；Described control unit includes control module, inlet water solenoid valve, drain solenoid valve and return flow solenoid valve, the water inlet electromagnetism
Valve is mounted on the water inlet pipe；The drain solenoid valve is mounted on the drainpipe, is located at the return pipe and described dense
Between water tank；The return flow solenoid valve is mounted on the return pipe；Described control unit respectively with the detection instrument, described
Inlet water solenoid valve, the drain solenoid valve, the water pump, the return flow solenoid valve are connected, for providing operation control；Wherein,
The control module is equipped with parameter threshold, and the control module detects the real-time of instrument with described by comparing the parameter threshold
Detected value carries out operation control to the film process unit；The control module chooses one or several of the real-time detection value
Compared with the respective items of the parameter threshold, by comparing result control the operating status of the film process unit, operation early warning and
Operation risk.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the detection instrument includes peace
The online TDS meter of water inlet, online flowmeter of intaking, online thermometer on the water inlet pipe, the online ORP instrument of water inlet, into
The online pH instrument of water, the online pressure gauge of water inlet, online SDI analyzer；The concentrated water import being mounted on the film process unit
Hold online pressure gauge, the online pressure gauge in concentrated water outlet end；The online flowmeter of production water, the production water being mounted on the water producing pipe
Online TDS meter produces the online pressure gauge of water；The draining being mounted on the drainpipe online TDS meter, drain online flowmeter,
Drain online pressure gauge；With the online liquidometer being mounted on the concentrated water case.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the film process unit includes
Concatenated one section of reverse osmosis membrane unit and two sections of reverse osmosis membrane units；One section of reverse osmosis membrane unit include one section of water inlet end,
One section of membrane module and one section of water outlet；One section of water inlet end is equipped with one section of water inlet, one section of water inlet and the water inlet
Pipe is connected；One section of water outlet is equipped with one section of production water water outlet and one section of concentrated water water outlet, and one section of production water water outlet is logical
It crosses the water producing pipe to be connected with the water producing tank, one section of concentrated water water outlet passes through water-supply-pipe and two sections of reverse osmosis membrane lists
Member is connected；Two sections of reverse osmosis membrane units include two sections of water inlet ends, two-segment film component and two sections of water outlets；Two sections of water inlets
End is equipped with two sections of water inlets, and two sections of water inlets are connected by the water-supply-pipe with one section of concentrated water water outlet；Described two
Section water outlet be equipped with two sections of productions water water outlets and two sections of concentrated water water outlets, two sections of productions water water outlets pass through the water producing pipe and
The water producing tank is connected, and two sections of concentrated water water outlets are connected by the drainpipe with the concentrated water case；Described control unit
Further include the online pressure gauge of water delivery, the online pressure gauge of water delivery is mounted on the water-supply-pipe, and with the control mould
Block is connected.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the real-time detection value includes
The real-time TDS value of water inlet pipe of the online TDS meter detection of water inlet；The real-time flow of inlet water of the online flowmeter detection of water inlet
Value；The real-time inflow temperature value of the online thermometer detection；The real-time water inlet ORP value of the online ORP instrument detection of water inlet；
The real-time water inlet pH value of the online pH instrument detection of water inlet；The real-time intake pressure of the online pressure gauge detection of water inlet
Value；The real-time water inlet SDI value of the online SDI analyzer detection；The online pressure gauge of concentrated water input end detects real-time
Concentrated water input end pressure value；The real-time concentrated water outlet pressures value of the online pressure gauge detection in concentrated water outlet end；The production
The real-time production water flow value of the online flowmeter detection of water；The real-time TDS value of water producing pipe for producing the online TDS meter detection of water；It is described
Produce the real-time production hydraulic pressure force value of the online pressure gauge detection of water；The real-time TDS value of drainpipe of the online TDS meter detection of draining；
The real-time blowdown stream magnitude of the online flowmeter detection of draining；The real-time discharge pressure of the online pressure gauge detection of draining
Value；The concentrated water case real-time level value of the online liquidometer detection；The real-time water delivery pressure of the online pressure gauge detection of water delivery
Force value；It further include real-time salt rejection rate, the real-time rate of recovery, real-time concentration rate value, film process unit pressure difference, each section of film process unit
Pressure difference；Wherein, the real-time salt rejection rate be the real-time TDS value of the water inlet pipe and the real-time TDS value of the water producing pipe difference with it is described
The ratio of the real-time TDS value of water inlet pipe；The real-time rate of recovery is the real-time production water flow value and the real-time feed water flow magnitude
Ratio；The real-time concentration rate value is the ratio of the real-time TDS value of the drainpipe and the real-time TDS value of the water inlet pipe；Institute
State the difference that film process unit pressure difference is the real-time concentrated water input end pressure value and the real-time concentrated water outlet pressures value；Institute
Stating each section of pressure difference of film process unit includes one section of reverse osmosis membrane unit pressure difference and two sections of reverse osmosis membrane unit pressure differences；Described one section anti-
Osmosis membrane unit pressure difference is the difference of the real-time concentrated water input end pressure value and the real-time water delivery pressure value；Described two sections anti-
Osmosis membrane unit pressure difference is the difference of the real-time water delivery pressure value and the real-time concentrated water outlet pressures value.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
The film process unit is transported than the parameter threshold and the concentrated water case real-time level value, the real-time concentration rate value
The control of row state；When the concentrated water case real-time level value is higher than the upper limit of the parameter threshold, described in the control module closing
Inlet water solenoid valve；When the concentrated water case real-time level value is lower than the lower limit of the parameter threshold, described in the control module unlatching
Inlet water solenoid valve；When the real-time concentration rate value is not less than the parameter threshold, the control module opens the draining electricity
Concentrated water is discharged into the concentrated water case by magnet valve；When the real-time concentration rate value is lower than the parameter threshold, the control module
The water pump and the return flow solenoid valve on the return pipe are opened, concentrated water is transmitted back in the water inlet pipe.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
TDS value more real-time than the parameter threshold and the drainpipe, the real-time blowdown stream magnitude, the real-time feed water flow magnitude, institute
State real-time inflow temperature value, the real-time water inlet ORP value, the real-time water inlet pH value, the real-time inlet pressure value, the reality
When discharge pressure value, the real-time concentrated water input end pressure value, the real-time concentrated water outlet pressures value, the water producing pipe it is real-time
The real-time TDS value of TDS value, the water inlet pipe, the real-time production water flow value, the real-time production hydraulic pressure force value, the real-time water inlet
SDI value, the real-time salt rejection rate, the real-time rate of recovery carry out operation early warning control to the film process unit；The draining
When managing lower limit of the real-time TDS value lower than the parameter threshold, the control module externally exports alarm signal；The real-time draining
When flow value is higher than the real-time feed water flow magnitude, the control module externally exports alarm signal；The real-time inflow temperature
When the upper limit of the value higher than the parameter threshold or the lower limit lower than the parameter threshold, the control module externally exports alarm signal
Number；When the real-time water inlet ORP value is higher than the upper limit of the parameter threshold, the control module externally exports alarm signal or defeated
Stopping signal out；When the upper limit of the real-time water inlet pH value higher than the parameter threshold or the lower limit lower than the parameter threshold,
The control module externally exports alarm signal；It is described when the real-time inlet pressure value is higher than the upper limit of the parameter threshold
Control module externally exports alarm signal or output stopping signal；The real-time discharge pressure value is higher than the upper of the parameter threshold
In limited time, the control module externally exports alarm signal or output stopping signal；The real-time concentrated water input end pressure value is lower than
It is described when the lower limit of the parameter threshold and/or the real-time concentrated water outlet pressures value are higher than the upper limit of the parameter threshold
Control module externally exports stopping signal；When the real-time salt rejection rate is lower than the lower limit of the parameter threshold, the control module
Externally output alarm signal；When the real-time rate of recovery is higher than the upper limit of the parameter threshold, the control module is externally exported
Alarm signal；When the real-time upper limit for producing hydraulic pressure force value higher than the parameter threshold, the control module externally exports alarm
Signal；When the real-time water inlet SDI value is higher than the upper limit of the parameter threshold, the control module externally exports alarm signal.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
Operation risk control, the operation risk packet are carried out to the film process unit than the parameter threshold and the real-time detection value
Include colloid pollution risk, organic pollution risk, scaling fouling risk.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
Than the parameter threshold and the real-time inlet pressure value, the real-time production water flow value, the film process unit pressure difference, described
Real-time salt rejection rate carries out colloid pollution risk control to the film process unit；The real-time inlet pressure value occurs simultaneously to rise
The parameter threshold is decrease beyond, on the film process unit pressure difference more than the parameter threshold, the real-time production water flow value
Rising is more than the parameter threshold, and the real-time salt rejection rate meets the parameter threshold, then the control module determines that glue occurs
Body pollution, and externally export colloid pollution alarm signal.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
Than the parameter threshold and the real-time production water flow value, the real-time inlet pressure value, the real-time salt rejection rate and the film
Each section of pressure difference of processing unit carries out organic pollution risk control to the film process unit；The real-time production water flow occurs simultaneously
Magnitude decrease beyond the parameter threshold, the real-time inlet pressure value is increased beyond the parameter threshold, the real-time desalination
Rate meets the parameter threshold, and each section of pressure difference of the film process unit is increased beyond the parameter threshold, and described one section anti-
Osmosis membrane unit pressure difference ascensional range is greater than two sections of reverse osmosis membrane unit pressure differences, then the control module determines to occur organic
Object pollution, and externally export organic pollution risk alarm signal.
Such as above-mentioned power plant's reverse osmosis membrane concentration rate control system, further preferably are as follows: the control module by pair
At the parameter threshold and the real-time inlet pressure value, the real-time production water flow value, the real-time salt rejection rate, the film
It manages each section of pressure difference of unit and scaling fouling risk control is carried out to the film process unit, the scaling fouling risk includes sulfate
Scaling fouling risk, carbonate scaling fouling risk and silicate deposition pollution risk；Two sections of reverse osmosis membrane unit pressure differences
Being increased beyond the parameter threshold, then the control module determines that sulfate scale pollution and/or carbonate scaling fouling occurs,
And externally export sulfate scale pollution risk and carbonate scaling fouling risk alarm signal；In the real-time inlet pressure value
It rises, the real-time production water flow value decline, the real-time salt rejection rate decline, and one section of reverse osmosis membrane unit pressure difference meets institute
Parameter threshold, two sections of reverse osmosis membrane unit pressure differences reduction are stated more than the parameter threshold, then the control module determines hair
Raw silicate deposition pollution, and externally export silicate deposition pollution risk alarm signal.
Analysis it is found that compared with prior art, the advantages and beneficial effects of the present invention are:
The present invention can automatically control film process by detection instrument and control unit detection, the operation of control film process unit
The concentration rate of unit saves manpower, and easy for installation, flexible operation is reliable, avoids delay when manual control valve, at film
The concentration rate for managing unit is stablized, and so as to extend the service life of film process unit, saves power plant's operating cost.Also,
Detection instrument of the invention and control unit are used cooperatively, additionally it is possible to the operation of power plant's reverse osmosis membrane concentration rate control system
Links are managed, to control the operating status of film process unit, operation early warning and operation risk, also have controllable journey
The feature that degree is high, control ability is strong.Meanwhile film process unit of the invention is that concatenated one section of reverse osmosis membrane unit and two sections are anti-
Osmosis membrane unit, can reasonable distribution enriching service amount, mitigate the operation burden of single reverse osmosis membrane unit, improve film process list
The overall operation efficiency of member, and improve the ability to ward off risks of film process unit.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of power plant's reverse osmosis membrane concentration rate control system of the invention；
Fig. 2 is the inside connection schematic diagram of film process unit of the invention；
Fig. 3 is the structural schematic diagram of one section of reverse osmosis membrane unit of the invention；
In figure: 1- inlet water solenoid valve；2- water inlet pipe；The online TDS meter of 3- water inlet；The online flowmeter of 4- water inlet；The online thermometer of 5-；
The online ORP instrument of 6- water inlet；The online pH instrument of 7- water inlet；The online pressure gauge of 8- water inlet；The online SDI analyzer of 9-；10- concentrated water
The online pressure gauge of input end；11- film process unit；The online pressure gauge in 12- concentrated water outlet end；13- produces the online flowmeter of water；
14- produces the online TDS meter of water；15- produces the online pressure gauge of water；16- drainpipe；17- water producing pipe；18- water producing tank；19- draining exists
Line TDS meter；20- drains online flowmeter；21- drains online pressure gauge；22- drain solenoid valve；The online liquidometer of 23-；24-
Concentrated water case；25- return pipe；26- return flow solenoid valve；27- water pump；28- control module；29- water-supply-pipe；30- water delivery is in line pressure
Instrument；Mono- section of reverse osmosis membrane unit of 31-；Bis- sections of reverse osmosis membrane units of 32-；Mono- section of water inlet end of 33-；Mono- section of membrane module of 34-；35-
One section of water outlet；Mono- section of production water water outlet of 36-；Mono- section of concentrated water water outlet of 37-.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, term " on ", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the present invention rather than
It is required that the present invention must be constructed and operated in a specific orientation, therefore it is not considered as limiting the invention.Make in the present invention
Term " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection；It can be with
It is to be connected directly, can also be indirectly connected by intermediate member, it for the ordinary skill in the art, can be according to tool
Body situation understands the concrete meaning of above-mentioned term.
In the present invention, english abbreviation paraphrase are as follows: TDS is the abbreviation of Total dissolved solids, is dissolubility
Solid amount；ORP is the abbreviation of Oxidation-Reduction Potential, is oxidation-reduction potential；SDI is Silting
The abbreviation of Density Index is silt density index (SDI)；PH is the abbreviation of hydrogen ion concentration, is hydrogen
Ion concentration index；COD is the abbreviation of Chemical Oxygen Demand, is COD.
As shown in Figure 1 to Figure 3, Fig. 1 is the connection schematic diagram of power plant's reverse osmosis membrane concentration rate control system of the invention；
Fig. 2 is the inside connection schematic diagram of film process unit of the invention；Fig. 3 is that the structure of one section of reverse osmosis membrane unit of the invention is shown
It is intended to.
As shown in Figure 1, the present invention provides a kind of power plant's reverse osmosis membrane concentration rate control systems, it mainly include film process
Unit 11, water producing tank 18, concentrated water case 24, detection instrument and control unit；Film process unit 11 by water inlet pipe 2 introduce waste water,
Be connected by water producing pipe 17 with water producing tank 18, be connected with concentrated water case 24 by drainpipe 16, drainpipe 16 pass through return pipe 25 and
Water inlet pipe 2 is connected, and return pipe 25 is equipped with water pump 27；Water inlet pipe 2, film process unit 11, water producing pipe 17, drainpipe 16, concentrated water
Detection instrument is installed on case 24；Control unit includes control module 28, inlet water solenoid valve 1, drain solenoid valve 22 and reflux electricity
Magnet valve 26, inlet water solenoid valve 1 are mounted on water inlet pipe 2；Drain solenoid valve 22 is mounted on drainpipe 16, is located at 25 He of return pipe
Between concentrated water case 24；Return flow solenoid valve 26 is mounted on return pipe 25；Control unit respectively with detection instrument, inlet water solenoid valve 1,
Drain solenoid valve 22, water pump 27, return flow solenoid valve 26 are connected, for providing operation control；Wherein, control module 28 is equipped with parameter
Threshold value, control module 28 carry out operation control to film process unit 11 by the real-time detection value of reduced parameter threshold value and detection instrument
System；Control module 28 is chosen one or several of real-time detection value and is compared with the respective items of parameter threshold, is controlled by comparing result
Operating status, operation early warning and the operation risk of film process unit 11.
Specifically, power plant's reverse osmosis membrane concentration rate control system provided by the invention is detected at film by detection instrument
The operating parameter for managing unit 11 controls the operation of film process unit 11 by control unit.When inlet water solenoid valve 1 is opened, waste water
Entered in film process unit 11 by water inlet pipe 2, film process unit 11 carries out concentration to waste water, and treated, and waste water is divided into
Water and concentrated water are produced, water is produced and is entered in water producing tank 18 by water producing pipe 17, concentrated and be discharged by water producing tank 18, concentrated water passes through drainpipe
16, drain solenoid valve 22 enters in concentrated water case 24, and the concentrated water in concentrated water case 24 has reached predetermined concentration rate, is collected by concentrated water case 24
Middle discharge can be evaporated crystallization treatment or fume afterheat evaporation process, realize water-saving and emission-reducing with this, recycle.Inspection
It surveys instrument to detect the water quality in water inlet pipe 2 and drainpipe 16,28 analysis detecting data of control module can obtain in real time
The real-time concentration rate value of film process unit 11.Control module 28 is equipped with parameter threshold, and parameter threshold defines default concentration times
Rate value, when real-time concentration rate value is not less than default concentration rate value, drain solenoid valve 22 is opened, and concentrated water passes through drainpipe 16
Into in concentrated water case 24；When real-time concentration rate value is less than default concentration rate value, drain solenoid valve 22 is closed, and water pump 27 is first
Operation is then refluxed for the unlatching of solenoid valve 26, and concentrated water is entered in water inlet pipe 2 by return pipe 25 to be concentrated again.The present invention passes through detection
Instrument and control unit detection, the operation of control film process unit 11, can automatically control the concentration rate of film process unit 11,
Manpower is saved, easy for installation, flexible operation is reliable, avoids delay when manual control valve, the concentration of film process unit 11
Multiplying power is stablized, and so as to extend the service life of film process unit 11, saves power plant's operating cost.Meanwhile film process unit
11 service life not merely depends on concentration rate, also related with operation conditions, wastewater parameter, detection instrument of the invention
It is used cooperatively with control unit, additionally it is possible to which pipe is carried out to the links of power plant's reverse osmosis membrane concentration rate control system operation
Control also has controllable degree height, control energy to control the operating status of film process unit 11, operation early warning and operation risk
The strong feature of power.
In order to mitigate the operation burden of film process unit 11, and improve the operational efficiency of film process unit 11, anti-risk energy
Power, as shown in Figure 1 to Figure 3, film process unit 11 include concatenated one section of reverse osmosis membrane unit 31 and two sections of reverse osmosis membrane units
32；One section of reverse osmosis membrane unit 31 includes one section of water inlet end, 33, one sections of membrane modules 34 and one section of water outlet 35；One section of water inlet end 33
Equipped with one section of water inlet, one section of water inlet is connected with water inlet pipe 2；One section of water outlet 35 is equipped with one section of production water water outlet 36 and one section
Concentrated water water outlet 37, one section of production water water outlet 36 are connected by water producing pipe 17 with water producing tank 18, and one section of concentrated water water outlet 37 passes through
Water-supply-pipe 29 is connected with two sections of reverse osmosis membrane units 32；Two sections of reverse osmosis membrane units 32 include two sections of water inlet ends, two-segment film component
With two sections of water outlets；Two sections of water inlet ends are equipped with two sections of water inlets, and two sections of water inlets pass through water-supply-pipe 29 and one section of concentrated water water outlet
37 are connected；Two sections of water outlets are equipped with two sections of production water water outlets and two sections of concentrated water water outlets, and two sections of production water water outlets pass through water producing pipe
17 are connected with water producing tank 18, and two sections of concentrated water water outlets are connected by drainpipe 16 with concentrated water case 24.It is water inlet pipe 2, drainpipe 16, defeated
Water pipe 29, return pipe 25 use PVC steel wire tube, and are fixed by pipe collar.The present invention is by being arranged concatenated one section of reverse osmosis membrane list
Member 31 and two sections of reverse osmosis membrane units 32, can reasonable distribution enriching service amount, the operation for mitigating single reverse osmosis membrane unit is negative
Load, improves the overall operation efficiency of film process unit 11, and improves the ability to ward off risks of film process unit 11.
For the ease of detecting the operation conditions of film process unit 11, as shown in Figure 1, detection instrument includes being mounted on water inlet pipe
The online TDS meter 3 of water inlet on 2, the online flowmeter 4 of water inlet, online thermometer 5, the online ORP instrument 6 of water inlet, the online pH instrument of water inlet
Table 7, the online pressure gauge 8 of water inlet, online SDI analyzer 9；The concentrated water input end on film process unit 11 is mounted in line pressure
Instrument 10, the online pressure gauge 12 in concentrated water outlet end；The online flowmeter 13 of the production water being mounted on water producing pipe 17, production water are online
TDS meter 14 produces the online pressure gauge 15 of water；The online TDS meter 19 of the draining being mounted on drainpipe 16, the online flowmeter of draining
20, online pressure gauge 21 is drained；With the online liquidometer 23 being mounted on concentrated water case 24, the water delivery being mounted on water-supply-pipe 29
Online pressure gauge 30.Detect the corresponding relationship of instrument and real-time detection value are as follows: online 3 detection water inlet pipe of TDS meter of intaking is real-time
TDS value；Online flowmeter 4 of intaking detects real-time feed water flow magnitude；Online thermometer 5 detects real-time inflow temperature value；Water inlet exists
Line ORP instrument 6 detects water inlet ORP value in real time；Online pH instrument 7 of intaking detects water inlet pH value in real time；It intakes online pressure gauge 8
Detect real-time inlet pressure value；Online SDI analyzer 9 detects water inlet SDI value in real time；The online pressure gauge 10 of concentrated water input end is examined
Survey real-time concentrated water input end pressure value；The online pressure gauge 12 in concentrated water outlet end detects real-time concentrated water outlet pressures value；Produce water
Online flowmeter 13 detects produces water flow value in real time；Produce the online 14 detection real-time TDS value of water producing pipe of TDS meter of water；Water is produced to press online
Power instrument 15 detects produces hydraulic pressure force value in real time；Drain the online 19 detection real-time TDS value of drainpipe of TDS meter；Drain online flowmeter
The 20 real-time blowdown stream magnitudes of detection；It drains online pressure gauge 21 and detects real-time discharge pressure value；Online liquidometer 23 detects dense
Water tank real-time level value；The online pressure gauge 30 of water delivery detects real-time water delivery pressure value.The present invention passes through in power plant's reverse osmosis membrane
Installation detection instrument in concentration rate control system, is convenient for automation control.Further, each real-time detection value is through controlling
The combination of module 28 calculates, and can be derived that real-time salt rejection rate, the real-time rate of recovery, real-time concentration rate value, film process unit 11 are pressed
11 each sections of difference, film process unit pressure differences.Wherein, real-time salt rejection rate is the difference of the real-time TDS value of water inlet pipe and the real-time TDS value of water producing pipe
With the ratio of the real-time TDS value of water inlet pipe；The real-time rate of recovery is the ratio for producing water flow value and real-time feed water flow magnitude in real time；In real time
Concentration rate value is the ratio of the real-time TDS value of drainpipe and the real-time TDS value of water inlet pipe；11 pressure difference of film process unit is real-time concentrated water
The difference of input end pressure value and real-time concentrated water outlet pressures value；11 each sections of pressure differences of film process unit include one section of reverse osmosis membrane
Unit pressure difference and two sections of reverse osmosis membrane unit pressure differences；One section of reverse osmosis membrane unit pressure difference is real-time concentrated water input end pressure value and reality
When water delivery pressure value difference；Two sections of reverse osmosis membrane unit pressure differences are real-time water delivery pressure value and real-time concentrated water outlet pressures value
Difference.
The present invention detects instrument by installing in power plant's reverse osmosis membrane concentration rate control system, and to control module 28
The real-time inspection for being worth corresponding threshold range with the real-time detection of detection instrument, combining, being calculated with through control module 28 is set
The corresponding threshold range of measured value, can to power plant's reverse osmosis membrane concentration rate control system carry out operating status, operation early warning and
The control of operation risk.Wherein, threshold range includes the real-time TDS value of water inlet pipe, real-time feed water flow magnitude, real-time inflow temperature
Value, ORP value of intaking in real time, pH value of intaking in real time, real-time inlet pressure value, in real time water inlet SDI value, real-time concentrated water import end pressure
Value, produces water flow value in real time, the real-time TDS value of water producing pipe, produces hydraulic pressure force value, drainpipe in real time real-time concentrated water outlet pressures value
Real-time TDS value, real-time blowdown stream magnitude, real-time discharge pressure value, concentrated water case real-time level value, real-time water delivery pressure value, in real time
Salt rejection rate, the real-time rate of recovery, real-time concentration rate value, 11 pressure difference of film process unit, 11 each sections of pressure differences of film process unit it is predetermined
Fluctuation range.
When controlling operating status, as shown in Figure 1, control module 28 passes through reduced parameter threshold value and concentrated water case real-time level
Value, real-time concentration rate value carry out operating status control to film process unit 11；Concentrated water case real-time level value is higher than parameter threshold
The upper limit when, control module 28 close inlet water solenoid valve 1；When concentrated water case real-time level value is lower than the lower limit of parameter threshold, control
Module 28 opens inlet water solenoid valve 1；When real-time concentration rate value is not less than parameter threshold, control module 28 opens drain solenoid valve
22, concentrated water is discharged into concentrated water case 24；When real-time concentration rate value is lower than parameter threshold, control module 28 is opened on return pipe 25
Water pump 27 and return flow solenoid valve 26, concentrated water is transmitted back in water inlet pipe 2.
When control runs early warning, as shown in Figure 1 to Figure 3, control module 28 is real by reduced parameter threshold value and drainpipe
When TDS value, real-time blowdown stream magnitude, real-time feed water flow magnitude, real-time inflow temperature value, intake in real time ORP value, real-time inlet flow-patterm
Value, real-time discharge pressure value, real-time concentrated water input end pressure value, real-time concentrated water outlet pressures value, produces real-time inlet pressure value
The real-time TDS value of water pipe, the real-time TDS value of water inlet pipe produce water flow value in real time, produce hydraulic pressure force value, in real time water inlet SDI value, reality in real time
When salt rejection rate, the real-time rate of recovery to film process unit 11 carry out operation early warning control；The real-time TDS value of drainpipe is lower than parameter threshold
Lower limit when, control module 28 externally output alarm signal；When real-time blowdown stream magnitude is higher than real-time feed water flow magnitude, mould is controlled
Block 28 externally exports alarm signal；When the upper limit of the real-time inflow temperature value higher than parameter threshold or the lower limit lower than parameter threshold,
Control module 28 externally exports alarm signal, and in one embodiment of the invention, real-time inflow temperature value is higher than 25 DEG C or low
When 10 DEG C, externally output alarm signal, the parameter threshold of film process unit 11 are 10 DEG C to 25 DEG C to control module 28；In real time into
When water ORP value is higher than the upper limit of parameter threshold, control module 28 externally exports alarm signal or output stopping signal, in the present invention
One embodiment in, in real time intake ORP value be higher than 200MV when control module 28 externally output alarm signal, ORP of intaking in real time
Control module 28 externally exports stopping signal when value is higher than 250MV；Water inlet pH value is higher than the upper limit of parameter threshold or is lower than in real time
When the lower limit of parameter threshold, control module 28 externally exports alarm signal, in one embodiment of the invention, real-time inlet flow-patterm
When value is higher than 9 or is lower than 6, control module 28 externally exports alarm signal；Real-time inlet pressure value is higher than the upper limit of parameter threshold
When, control module 28 externally exports alarm signal or output stopping signal, in one embodiment of the invention, real-time influent pressure
Force value goes to evaluate according to the percentage of preset pressure value, and when real-time inlet pressure value is more than 115%, control module 28 is externally exported
Alarm signal, when real-time inlet pressure value is more than 125%, control module 28 externally exports stopping signal；Real-time discharge pressure value is high
When the upper limit of parameter threshold, control module 28 externally exports alarm signal or output stopping signal, in a reality of the invention
It applies in example, real-time discharge pressure value goes to evaluate according to the percentage of preset pressure value, when real-time discharge pressure value is more than 115%, control
Molding block 28 externally exports alarm signal, and when real-time discharge pressure value is more than 125%, control module 28 externally exports stopping signal；
Real-time concentrated water input end pressure value is higher than parameter threshold lower than the lower limit of parameter threshold and/or real-time concentrated water outlet pressures value
When the upper limit, control module 28 externally exports stopping signal, in one embodiment of the invention, real-time concentrated water input end pressure value
Externally output stopping signal, real-time concentrated water outlet pressures value are higher than 0.1MPa time control molding to control module 28 when lower than 0.1MPa
Block 28 externally exports stopping signal；When real-time salt rejection rate is lower than the lower limit of parameter threshold, control module 28 externally exports alarm signal
Number, in one embodiment of the invention, when real-time salt rejection rate is lower than 98%, control module 28 externally exports alarm signal；In real time
When the rate of recovery is higher than the upper limit of parameter threshold, control module 28 externally exports alarm signal, in one embodiment of the invention,
When the real-time rate of recovery is higher than 70%, control module 28 externally exports alarm signal；Hydraulic pressure force value is produced in real time is higher than the upper of parameter threshold
In limited time, control module 28 externally exports alarm signal；When water inlet SDI value is higher than the upper limit of parameter threshold in real time, control module 28
When SDI value of intaking in real time is higher than 3, there is colloid pollution at this time in one embodiment of the invention in externally output alarm signal
Risk, control module 28 externally export alarm signal.Further, one section of 31 pressure difference of reverse osmosis membrane unit is higher than parameter threshold
When the upper limit, control module 28 externally exports alarm signal；When two sections of 32 pressure differences of reverse osmosis membrane unit are higher than the upper limit of parameter threshold,
Control module 28 externally with the percentage of preset pressure value go to evaluate in one embodiment of the invention by output alarm signal,
When one section of 31 pressure difference of reverse osmosis membrane unit and/or two sections of 32 pressure differences of reverse osmosis membrane unit are higher than 115%, control module 28 is externally defeated
Alarm signal out.
When controlling operation risk, as shown in Figure 1 to Figure 3, control module 28 passes through reduced parameter threshold value and real-time detection
Value carries out operation risk control to film process unit 11, and operation risk includes colloid pollution risk, organic pollution risk, fouling
Pollution risk.
For colloid pollution risk, one section of reverse osmosis membrane unit 31 of film process unit 11 is dirty stifled compared with two sections of reverse osmosis membrane lists
Member 32 is serious, usually occurs in surface water class water source or the higher water source of turbidity, as shown in Figure 1 to Figure 3, control module 28
By reduced parameter threshold value and real-time inlet pressure value, water flow value, 11 pressure difference of film process unit, real-time salt rejection rate pair are produced in real time
Film process unit 11 carries out colloid pollution risk control；Simultaneously occur real-time inlet pressure value be increased beyond parameter threshold, in real time
Water flow value decrease beyond parameter threshold, 11 pressure difference of film process unit (one section of reverse osmosis membrane unit pressure difference) is increased beyond parameter for production
Threshold value, and salt rejection rate meets parameter threshold in real time, then control module 28 determines that colloid pollution occurs, and externally exports colloid pollution
Alarm signal, prompting are manually cleared up.
For organic pollution risk, the one section of reverse osmosis membrane unit 31 and two sections of reverse osmosis membrane units of film process unit 11
32 can occur, compared to two sections reverse osmosis membrane units 32, and that a situation arises is more universal and tight for one section of reverse osmosis membrane unit 31
Weight.Also, organic pollution usually occurs high in the COD such as coal chemical industrial waste water, coking wastewater, dyeing waste water, paper waste content
In the water of (being greater than 10mg/L), and (microbial contamination increases and serious, i.e. summer microorganism dirt with water temperature with microbial contamination
Dye is serious compared with winter, and microbial contamination often with bad smell, samples the taste for having singe hair or protein when calcination).Organic matter
The presentation of pollution, which is that one section of 33 wall polluting object of water inlet end is glutinous, to be slided, and than one section 35 inner wall of water outlet of one section of 33 inner wall of water inlet end is glutinous
It is sliding.As shown in Figure 1 to Figure 3, control module 28 by reduced parameter threshold value and in real time produce water flow value, real-time inlet pressure value,
Real-time 11 each sections of pressure differences of salt rejection rate and film process unit carry out organic pollution risk control to film process unit 11；Occur simultaneously
Water flow value decrease beyond parameter threshold, real-time inlet pressure value is increased beyond parameter threshold for production in real time, real-time salt rejection rate meets
Parameter threshold, and 11 each sections of pressure differences of film process unit are increased beyond parameter threshold, increasing degree on one section of reverse osmosis membrane unit pressure difference
Degree is greater than two sections of reverse osmosis membrane unit pressure differences, then control module 28 determines that organic pollution occurs, and externally output organic matter is dirty
Contaminate risk alarm signal.
For scaling fouling risk, as shown in Figure 1 to Figure 3, control module 28 passes through reduced parameter threshold value and water inlet in real time
Pressure value produces 11 each sections of water flow value, real-time salt rejection rate, film process unit pressure differences to the progress fouling dirt of film process unit 11 in real time
Risk control is contaminated, scaling fouling risk includes sulfate scale pollution risk, carbonate scaling fouling risk and silicate deposition
Pollution risk；Two sections of reverse osmosis membrane unit pressure differences are increased beyond parameter threshold, then control module 28 determines that sulfate scale occurs
Pollution and/or carbonate scaling fouling, and externally export sulfate scale pollution risk and carbonate scaling fouling risk alarm
Signal, when distinguishing sulfate scale pollution and carbonate scaling fouling, using dissolving with hydrochloric acid, reaction is violent, has bubble generation
And can be dissolved is carbonate scaling fouling, substantially it is unconverted for sulfate scale pollution (in chemical reaction carbonate with
Hydrochloric acid reaction generates carbon dioxide, therefore reacts acutely, and sulfate is generated without carbon dioxide, therefore substantially unchanged)；Real-time influent pressure
Force value rises, produces water flow value decline, the decline of real-time salt rejection rate in real time, and one section of reverse osmosis membrane unit pressure difference meets parameter threshold
It is more than parameter threshold that value, two sections of reverse osmosis membrane unit pressure differences, which reduce, then control module 28 determines that silicate deposition pollution occurs, and
Externally output silicate deposition pollution risk alarm signal.
Need to further illustrate, water inlet of the invention online TDS meter 3, the online flowmeter 4 of water inlet, online thermometer 5,
It intakes online ORP instrument 6, the online pH instrument 7 of water inlet, the online pressure gauge 8 of water inlet, online SDI analyzer 9, concentrated water input end
Online pressure gauge 10, the online pressure gauge 12 in concentrated water outlet end produce the online flowmeter 13 of water, produce the online TDS meter 14 of water, produce water
Online pressure gauge 15, the online TDS meter 19 of draining, the online flowmeter 20 of draining, the online pressure gauge 21 of draining, online liquidometer
23, the online pressure gauge 30 of water delivery, water producing tank 18, concentrated water case 24, control module 28, inlet water solenoid valve 1, drain solenoid valve 22,
26, one sections of return flow solenoid valve, 31, two sections of reverse osmosis membrane unit reverse osmosis membrane unit 32, water inlet pipe 2, water producing pipe 17, water-supply-pipe 29,
The title of drainpipe 16 is the restriction not to component for ease of description, and those skilled in the art can be according to first device
The description of the function of part is corresponding to select suitable component, and is assembled, connected, operated.
As known by the technical knowledge, the present invention can pass through the embodiment party of other essence without departing from its spirit or essential feature
Case is realized.Therefore, embodiment disclosed above, in all respects are merely illustrative, not the only.Institute
Have within the scope of the present invention or is included in the invention in the change being equal in the scope of the present invention.
Claims (10)
1. a kind of power plant's reverse osmosis membrane concentration rate control system characterized by comprising
Film process unit, water producing tank, concentrated water case, detection instrument and control unit；
The film process unit introduces waste water by water inlet pipe, is connected by water producing pipe with the water producing tank, pass through drainpipe and
The concentrated water case is connected, and the drainpipe is connected by return pipe with the water inlet pipe, and the return pipe is equipped with water pump；
The water inlet pipe, the water producing pipe, the drainpipe, is equipped with the inspection on the concentrated water case at the film process unit
Survey instrument；
Described control unit includes control module, inlet water solenoid valve, drain solenoid valve and return flow solenoid valve, the inlet water solenoid valve
It is mounted on the water inlet pipe；The drain solenoid valve is mounted on the drainpipe, is located at the return pipe and the concentrated water
Between case；The return flow solenoid valve is mounted on the return pipe；Described control unit respectively with the detection instrument, it is described into
Water solenoid valve, the drain solenoid valve, the water pump, the return flow solenoid valve are connected, for providing operation control；
Wherein, the control module is equipped with parameter threshold, and the control module is by comparing the parameter threshold and the detection
The real-time detection value of instrument carries out operation control to the film process unit；
The control module is chosen one or several of the real-time detection value and is compared with the respective items of the parameter threshold, by right
Than operating status, operation early warning and the operation risk that result controls the film process unit.
2. power plant's reverse osmosis membrane concentration rate control system according to claim 1, it is characterised in that:
The detection instrument includes the online TDS meter of water inlet, the online flowmeter of intaking, online temperature being mounted on the water inlet pipe
It counts, online ORP instrument of intaking, the online pH instrument of water inlet, the online pressure gauge of water inlet, online SDI analyzer；
The online pressure gauge of concentrated water input end, the online pressure gauge in concentrated water outlet end being mounted on the film process unit；
The online TDS meter of the online flowmeter of production water, the production water being mounted on the water producing pipe produces the online pressure gauge of water；
The online TDS meter of the draining being mounted on the drainpipe drains online flowmeter, the online pressure gauge of draining；With
The online liquidometer being mounted on the concentrated water case.
3. power plant's reverse osmosis membrane concentration rate control system according to claim 2, it is characterised in that:
The film process unit includes concatenated one section of reverse osmosis membrane unit and two sections of reverse osmosis membrane units；
One section of reverse osmosis membrane unit includes one section of water inlet end, one section of membrane module and one section of water outlet；
One section of water inlet end is equipped with one section of water inlet, and one section of water inlet is connected with the water inlet pipe；
One section of water outlet is equipped with one section of production water water outlet and one section of concentrated water water outlet, and one section of production water water outlet passes through institute
It states water producing pipe to be connected with the water producing tank, one section of concentrated water water outlet passes through water-supply-pipe and two sections of reverse osmosis membrane unit phases
Even；
Two sections of reverse osmosis membrane units include two sections of water inlet ends, two-segment film component and two sections of water outlets；
Two sections of water inlet ends are equipped with two sections of water inlets, and two sections of water inlets are gone out by the water-supply-pipe and one section of concentrated water
The mouth of a river is connected；
Two sections of water outlets are equipped with two sections of production water water outlets and two sections of concentrated water water outlets, and two sections of productions water water outlet passes through institute
It states water producing pipe to be connected with the water producing tank, two sections of concentrated water water outlets are connected by the drainpipe with the concentrated water case；
Described control unit further includes the online pressure gauge of water delivery, and the online pressure gauge of water delivery is mounted on the water-supply-pipe
On, and be connected with the control module.
4. power plant's reverse osmosis membrane concentration rate control system according to claim 3, which is characterized in that the real-time detection
Value includes:
The real-time TDS value of water inlet pipe of the online TDS meter detection of water inlet；
The real-time feed water flow magnitude of the online flowmeter detection of water inlet；
The real-time inflow temperature value of the online thermometer detection；
The real-time water inlet ORP value of the online ORP instrument detection of water inlet；
The real-time water inlet pH value of the online pH instrument detection of water inlet；
The real-time inlet pressure value of the online pressure gauge detection of water inlet；
The real-time water inlet SDI value of the online SDI analyzer detection；
The real-time concentrated water input end pressure value of the online pressure gauge detection of concentrated water input end；
The real-time concentrated water outlet pressures value of the online pressure gauge detection in concentrated water outlet end；
The real-time production water flow value for producing the online flowmeter detection of water；
The real-time TDS value of water producing pipe for producing the online TDS meter detection of water；
The real-time production hydraulic pressure force value for producing the online pressure gauge detection of water；
The real-time TDS value of drainpipe of the online TDS meter detection of draining；
The real-time blowdown stream magnitude of the online flowmeter detection of draining；
The real-time discharge pressure value of the online pressure gauge detection of draining；
The concentrated water case real-time level value of the online liquidometer detection；
The real-time water delivery pressure value of the online pressure gauge detection of water delivery；
It further include real-time salt rejection rate, the real-time rate of recovery, real-time concentration rate value, film process unit pressure difference, each section of film process unit
Pressure difference；
Wherein, the real-time salt rejection rate be the real-time TDS value of the water inlet pipe and the real-time TDS value of the water producing pipe difference with it is described into
The ratio of the real-time TDS value of water pipe；
The real-time rate of recovery is the real-time ratio for producing water flow value and the real-time feed water flow magnitude；
The real-time concentration rate value is the ratio of the real-time TDS value of the drainpipe and the real-time TDS value of the water inlet pipe；
The film process unit pressure difference is the real-time concentrated water input end pressure value and the real-time concentrated water outlet pressures value
Difference；
Each section of pressure difference of the film process unit includes one section of reverse osmosis membrane unit pressure difference and two sections of reverse osmosis membrane unit pressure differences；It is described
One section of reverse osmosis membrane unit pressure difference is the difference of the real-time concentrated water input end pressure value and the real-time water delivery pressure value；It is described
Two sections of reverse osmosis membrane unit pressure differences are the difference of the real-time water delivery pressure value and the real-time concentrated water outlet pressures value.
5. power plant's reverse osmosis membrane concentration rate control system according to claim 4, it is characterised in that:
The control module is by comparing the parameter threshold and the concentrated water case real-time level value, the real-time concentration rate value
Operating status control is carried out to the film process unit；
When the concentrated water case real-time level value is higher than the upper limit of the parameter threshold, the control module closes the water inlet electromagnetism
Valve；
When the concentrated water case real-time level value is lower than the lower limit of the parameter threshold, the control module opens the water inlet electromagnetism
Valve；
When the real-time concentration rate value is not less than the parameter threshold, the control module opens the drain solenoid valve, will
Concentrated water is discharged into the concentrated water case；
When the real-time concentration rate value is lower than the parameter threshold, the control module opens the water on the return pipe
Pump and the return flow solenoid valve, concentrated water is transmitted back in the water inlet pipe.
6. power plant's reverse osmosis membrane concentration rate control system according to claim 4, it is characterised in that:
The control module by compare the parameter threshold and the real-time TDS value of the drainpipe, the real-time blowdown stream magnitude,
It is the real-time feed water flow magnitude, the real-time inflow temperature value, the real-time water inlet ORP value, the real-time water inlet pH value, described
Real-time inlet pressure value, the real-time discharge pressure value, the real-time concentrated water input end pressure value, the real-time concentrated water outlet end
The real-time TDS value of pressure value, the water producing pipe, the real-time TDS value of the water inlet pipe, the real-time production water flow value, the real-time production
Hydraulic pressure force value, the real-time water inlet SDI value, the real-time salt rejection rate, the real-time rate of recovery carry out the film process unit
Run early warning control；
When the real-time TDS value of drainpipe is lower than the lower limit of the parameter threshold, the control module externally exports alarm signal；
When the real-time blowdown stream magnitude is higher than the real-time feed water flow magnitude, the control module externally exports alarm signal；
When the upper limit of the real-time inflow temperature value higher than the parameter threshold or the lower limit lower than the parameter threshold, the control
Molding block externally exports alarm signal；
It is described it is real-time water inlet ORP value be higher than the parameter threshold the upper limit when, the control module externally export alarm signal or
Export stopping signal；
When the upper limit of the real-time water inlet pH value higher than the parameter threshold or the lower limit lower than the parameter threshold, the control
Module externally exports alarm signal；
The real-time inlet pressure value be higher than the parameter threshold the upper limit when, the control module externally export alarm signal or
Export stopping signal；
The real-time discharge pressure value be higher than the parameter threshold the upper limit when, the control module externally export alarm signal or
Export stopping signal；
The real-time concentrated water input end pressure value is lower than the lower limit and/or the real-time concentrated water outlet pressures of the parameter threshold
When value is higher than the upper limit of the parameter threshold, the control module externally exports stopping signal；
When the real-time salt rejection rate is lower than the lower limit of the parameter threshold, the control module externally exports alarm signal；
When the real-time rate of recovery is higher than the upper limit of the parameter threshold, the control module externally exports alarm signal；
When the real-time upper limit for producing hydraulic pressure force value higher than the parameter threshold, the control module externally exports alarm signal；
When the real-time water inlet SDI value is higher than the upper limit of the parameter threshold, the control module externally exports alarm signal.
7. power plant's reverse osmosis membrane concentration rate control system according to claim 4, it is characterised in that:
The control module runs the film process unit with the real-time detection value by comparing the parameter threshold
Risk control, the operation risk include colloid pollution risk, organic pollution risk, scaling fouling risk.
8. power plant's reverse osmosis membrane concentration rate control system according to claim 7, it is characterised in that:
The control module by compare the parameter threshold and the real-time inlet pressure value, the real-time production water flow value,
The film process unit pressure difference, the real-time salt rejection rate carry out colloid pollution risk control to the film process unit；
Occur that the real-time inlet pressure value is increased beyond the parameter threshold, the real-time production water flow value is decrease beyond simultaneously
The parameter threshold, the film process unit pressure difference are increased beyond the parameter threshold, and described in the real-time salt rejection rate satisfaction
Parameter threshold, then the control module determines that colloid pollution occurs, and externally exports colloid pollution alarm signal.
9. power plant's reverse osmosis membrane concentration rate control system according to claim 7, it is characterised in that:
The control module by compare the parameter threshold and the real-time production water flow value, the real-time inlet pressure value,
Each section of pressure difference of the real-time salt rejection rate and the film process unit carries out organic pollution risk control to the film process unit；
Occur that the real-time production water flow value decrease beyond the parameter threshold, the real-time inlet pressure value is increased beyond simultaneously
The parameter threshold, the real-time salt rejection rate meet the parameter threshold, and each section of pressure difference of the film process unit rise it is super
The parameter threshold is crossed, one section of reverse osmosis membrane unit pressure difference ascensional range is greater than two sections of reverse osmosis membrane unit pressure differences,
Then the control module determines that organic pollution occurs, and externally exports organic pollution risk alarm signal.
10. power plant's reverse osmosis membrane concentration rate control system according to claim 7, it is characterised in that:
The control module by compare the parameter threshold and the real-time inlet pressure value, the real-time production water flow value,
Each section of real-time salt rejection rate, film process unit pressure difference carry out scaling fouling risk control, institute to the film process unit
Stating scaling fouling risk includes sulfate scale pollution risk, carbonate scaling fouling risk and silicate deposition pollution risk；
Two sections of reverse osmosis membrane unit pressure differences are increased beyond the parameter threshold, then the control module determines that sulfate occurs
Scaling fouling and/or carbonate scaling fouling, and externally export sulfate scale pollution risk and carbonate scaling fouling risk
Alarm signal；
The real-time inlet pressure value rises, the real-time production water flow value declines, the real-time salt rejection rate decline, and described one
It is more than the parameter threshold that section reverse osmosis membrane unit pressure difference, which meets the parameter threshold, two sections of reverse osmosis membrane unit pressure differences reduce
Value, then the control module determines that silicate deposition pollution occurs, and externally exports silicate deposition pollution risk alarm signal.
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| CN113620380A (en) * | 2020-05-07 | 2021-11-09 | 云米互联科技(广东)有限公司 | Water purifier control method, water purifier and computer readable storage medium |
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