CN105692973A - Ultrapure water preparation system and urea solution preparation system for vehicles - Google Patents

Ultrapure water preparation system and urea solution preparation system for vehicles Download PDF

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Publication number
CN105692973A
CN105692973A CN201610216843.4A CN201610216843A CN105692973A CN 105692973 A CN105692973 A CN 105692973A CN 201610216843 A CN201610216843 A CN 201610216843A CN 105692973 A CN105692973 A CN 105692973A
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water
reverse
production system
osmosis
pressure
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Inventor
张量
杨勇
曾威
张秀峰
龚轲
吕剑明
翟新春
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Zhuhai Gree Intelligent Equipment Co Ltd
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Zhuhai Gree Intelligent Equipment Co Ltd
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Priority to CN201610216843.4A priority Critical patent/CN105692973A/en
Publication of CN105692973A publication Critical patent/CN105692973A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/20—Reductants
    • B01D2251/206—Ammonium compounds
    • B01D2251/2067—Urea
    • 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
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • 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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
    • C02F1/4691—Capacitive deionisation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/02—Non-contaminated water, e.g. for industrial water supply
    • C02F2103/04—Non-contaminated water, e.g. for industrial water supply for obtaining ultra-pure water
    • 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
    • C02F2209/05—Conductivity or salinity
    • 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
    • C02F2301/04—Flow arrangements
    • 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

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention relates to an ultrapure water preparation system and a urea solution preparation system for vehicles, belonging to the technical field of ultrapure water preparation. The ultrapure water preparation system comprises a pretreatment device, an RO (reverse osmosis) treatment device and an EDI (electrodeionization) treatment device which are sequentially connected, wherein the pretreatment device comprises a filter assembly; the RO treatment device comprises an RO treatment unit or a plurality of RO treatment units arranged in series and parallel; each RO treatment unit comprises an RO membrane element or a plurality of RO membrane elements; and the EDI treatment device comprises a water inlet control unit, a water inlet detection adjustment unit, an EDI treatment unit, a produced water monitoring unit and an ultrapure water collection unit which are sequentially connected. The urea solution preparation system for vehicles comprises the ultrapure water preparation system. The ultrapure water preparation system and urea solution preparation system for vehicles are mainly used for implementing miniaturization and automation on the ultrapure water preparation system, so that the prepared ultrapure water has stable quality.

Description

A kind of ultrapure water production system and urea for vehicle solution preparation system
Technical field
The present invention relates to a kind of ultra-pure water preparing technical field, particularly relate to a kind of ultrapure water production system and urea for vehicle solution preparation system。
Background technology
Urea for vehicle refer to urea concentration be 32.5% and solvent be the aqueous solution of urea of ultra-pure water, its raw material is urea granules and ultra-pure water。Wherein, urea for vehicle as catalytic reducer, enables Vehicular exhaust to reach effluent standard when the tail gas of the diesel vehicle such as heavy truck, passenger vehicle is processed。
The urea for vehicle solution of present stage mainly obtains in the way of the production of chemical plant, and its nucleus equipment is the ultrapure water production device used by dissolved urea granule。But, at least there is following technical problem in this ultrapure water production device: equipment operation length, floor space are big, need multiple professional operation and safeguard and need to use the hazardous chemicals such as strong acid, highly basic。Up to now, there is no a kind of integrated automatic ultrapure water production system of miniaturization to be applied in urea for vehicle solution and prepare and all-in-one realizes intelligence produce ultra-pure water。
Summary of the invention
In view of this, the present invention provides a kind of ultrapure water production system and urea for vehicle solution preparation system, and main purpose is in that to realize the miniaturization of ultrapure water production system, and makes prepared ultra-pure water water stabilization。
For reaching above-mentioned purpose, present invention generally provides following technical scheme:
On the one hand, embodiments of the invention provide a kind of ultrapure water production system, and pretreatment unit, reverse osmosis treatment device and EDI that described ultrapure water production system includes by pipeline is sequentially connected with process device；Wherein,
Described pretreatment unit includes filter assemblies, for former water is tentatively filtered；
Reverse osmosis treatment device, for carrying out reverse-osmosis treated to the water after preliminary filtration；Wherein, described reverse osmosis treatment device includes a reverse-osmosis treated unit or the reverse-osmosis treated unit of multiple connection in series-parallel setting；Further, each described reverse-osmosis treated unit includes a RO reverse-osmosis membrane element or multiple RO reverse-osmosis membrane element；
EDI processes device, for the water after reverse-osmosis treated is carried out EDI process；Wherein, described EDI processes water inlet control unit, water inlet detection regulon, EDI processing unit, product water monitoring unit and the ultra-pure water collector unit that device includes being sequentially connected with by pipeline。
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further。
Preferably, described filter assemblies includes one or more in fore filter, candle filter, adsorption filter；
Wherein, described candle filter is coiling candle filter or melt-blown PP cotton candle filter；
Described adsorption filter is granular activated carbon filter or carbon block filter。
Preferably, described fore filter selects the stainless (steel) wire fore filter of 40 μm, to filter the granule of more than 40 μm in former water；
The rustless steel coiling candle filter of 10 μm selected by described coiling candle filter, to filter granule or the impurity of in former water more than 10 μm；
Described granular activated carbon filter selects the granular activated carbon filter of 10 μm, to adsorb the chlorine residue contained in former water。
Preferably, described filter assemblies also includes ultrafiltration membrane elements；Wherein, described ultrafiltration membrane elements is arranged on the upstream of described reverse osmosis treatment device。
Preferably, described ultrafiltration membrane elements selects PVDF ultrafiltration membrane element capable of washing。
Preferably, described ultrafiltration membrane elements is connected to the first flushing line, for ultrafiltration membrane elements is rinsed；Wherein, described first flushing line is provided with the first washing control valve, is controlled with the flushing to described ultrafiltration membrane elements。
Preferably, described pretreatment unit also includes pressure control assembly, and wherein, described pressure control assembly includes:
Air relief valve, described air relief valve is arranged in the upstream of described fore filter, is not more than the first setting value for the former water pressure controlling to enter in described pretreatment unit；
Pressure transducer, described pressure transducer is arranged on the pipeline between described fore filter and coiling candle filter, for detecting the discharge pressure of described fore filter；
Controlling valve, described control valve is arranged on the pipeline between described pressure transducer and coiling candle filter；If the discharge pressure that pressure transducer detects is less than the second setting value, then controls valve and be closed, make described pretreatment unit quit work；
Booster pump, described booster pump is arranged on the pipeline between described control valve and coiling candle filter, for the intake pressure of described coiling candle filter is pressurized to the 3rd setting value。
Preferably, described pretreatment unit also includes water inlet control valve and non-return valve；Wherein,
Described water inlet control valve is arranged in the upstream of described air relief valve, is used for controlling former water and enters in described pretreatment unit；
Described non-return valve is arranged on the pipeline between described air relief valve and described fore filter, is used for preventing air from entering in described ultrapure water production system。
Preferably, each described reverse-osmosis treated unit also includes:
Pressure flow detection components, described pressure flow detection components is arranged in the upstream of described RO reverse-osmosis membrane element, for detecting intake pressure and the flow of inlet water of reverse-osmosis treated unit；
Pressure flow adjusting part, described pressure flow adjusting part is arranged in the upstream of described intake pressure detection components, for regulating intake pressure and the flow of inlet water of reverse-osmosis treated unit；
Producing water detection components, described product water detection components is arranged on the downstream pipe of described RO reverse-osmosis membrane element, for detecting the product water water quality of reverse-osmosis treated unit。
Preferably, described pressure flow detection components, including pressure transducer and effusion meter；
Described pressure flow adjusting part includes high-pressure pump and first and regulates valve；Wherein, described high-pressure pump is arranged in the upstream of described pressure flow detection components；Described first regulates valve is arranged on the backflow branch road in parallel with described high-pressure pump two ends；
Described product water detection components includes the conductivity meter producing water water quality for detecting reverse-osmosis treated unit。
Preferably, each described reverse-osmosis treated unit also includes concentrated water discharge assembly；Wherein, described concentrated water discharge assembly includes:
Concentrated water discharge pipeline, described concentrated water discharge pipeline is connected with the concentrated water discharge mouth of described RO reverse-osmosis membrane element；And concentrated water discharge pipeline is provided with concentrated water discharge for controlling concentrated water discharge control valve, for detecting the pressure transducer of concentrated water discharge pressure and for detecting the effusion meter of concentrated water discharge flow；
Second flushing line, described second flushing line is connected with the concentrated water discharge mouth of described RO reverse-osmosis membrane element；Described second flushing line is provided with the second washing control valve, to control the flushing to RO reverse-osmosis membrane element。
Preferably, described reverse osmosis treatment device includes two reverse-osmosis treated unit being arranged in series, respectively first-stage reverse osmosis processing unit and two-pass reverse osmosis processing unit；Wherein,
Described first-stage reverse osmosis processing unit carries out first-stage reverse osmosis process for the water after preprocessed device is tentatively filtered；Wherein, described first-stage reverse osmosis processing unit includes two RO reverse-osmosis membrane elements being arranged in parallel；
Water after first-stage reverse osmosis processes is carried out two-pass reverse osmosis process by described two-pass reverse osmosis processing unit；Wherein, described two-pass reverse osmosis processing unit includes a RO reverse-osmosis membrane element。
Preferably, described reverse osmosis treatment device includes a reverse-osmosis treated unit, and described reverse-osmosis treated unit includes a RO reverse-osmosis membrane element。
Preferably, when described reverse-osmosis treated unit includes concentrated water discharge assembly, the concentrated water discharge pipeline of described two-pass reverse osmosis processing unit is additionally provided with non-return valve。
Preferably, described ultrapure water production system also includes intermediate water tank；Wherein, described intermediate water tank is arranged on the downstream pipe of described reverse osmosis treatment device, described EDI processes in the upstream of device, for collecting the product water of described reverse osmosis treatment device。
Preferably, described intermediate water tank is provided with fluid level control device, described intermediate water tank is provided with fluid level control device, for the setting liquid level of intermediate water tank is controlled；Wherein, described setting liquid level includes reserved peak level, during for losing efficacy at the peak level control point of intermediate water tank, it is prevented that intermediate water tank generation overflow；
Described intermediate water tank is additionally provided with respiratory organ, for realizing the balance of described intermediate water tank internal pressure, and guarantees that outer solid granule cannot be introduced in described intermediate water tank。
Preferably, the water inlet control unit that described EDI processes in device includes: inlet pipeline and the EDI booster pump being arranged on inlet pipeline and water inlet control valve；Wherein, the upstream extremity of described inlet pipeline connects with described intermediate water tank；The downstream of described inlet pipeline connects with described water inlet detection regulon。
Preferably, described water inlet control unit also includes the backflow branch road in parallel with described inlet pipeline；The downstream of described backflow branch road is connected with described intermediate water tank；Described backflow branch road is provided with the second adjustment valve, processes intake pressure and the flow of inlet water of device for regulating EDI。
Preferably, described EDI processing unit includes freshwater room and dense hydroecium；Or described EDI processing unit includes freshwater room, dense hydroecium and pole hydroecium。
Preferably, described EDI processes the first branch road and the second branch road that the detection regulon of intaking of device includes being arranged in parallel；
Wherein, described first branch road, the second branch road upstream extremity be all connected with the downstream of described water inlet control unit；
The downstream of described first branch road is connected with the import of described freshwater room；Described first branch road is provided with pressure transducer and inlet regulating valve, for detecting the intake pressure of described freshwater room and regulating intake pressure and the flow of inlet water of described freshwater room；
The downstream of described second branch road is connected with the import of described dense hydroecium；Be provided with pressure transducer on described second branch road, flow takes into account inlet regulating valve, for detecting and regulate pressure and the flow of inlet water of the water inlet of described dense hydroecium；
Wherein, when described EDI processing unit also includes pole hydroecium, described EDI processes the water inlet detection regulon of device and also includes and the 3rd branch road of described first branch road, the second branch circuit parallel connection；Wherein,
The upstream extremity of described 3rd branch road is connected with the downstream of described water inlet control unit；The downstream of described 3rd branch road is connected with the import of described pole hydroecium, and described 3rd branch road is provided with pressure transducer, flow takes into account inlet regulating valve, for detecting and regulate intake pressure and the flow of inlet water of described pole hydroecium。
Preferably, described EDI processes the product water monitoring unit of device and includes resistivity meter, and described resistivity meter is arranged on the outlet pipeline of described freshwater room。
Preferably, described ultra-pure water collector unit includes ultra-pure water and collects water tank, and described ultra-pure water is collected water tank and is connected with the outlet pipeline of described freshwater room, for collecting the fresh water that described EDI processing unit produces。
On the other hand, embodiments of the invention provide a kind of urea for vehicle solution preparation system, and described urea for vehicle solution preparation system includes the ultrapure water production system described in any of the above-described item。
By technique scheme, a kind of ultrapure water production system and the urea for vehicle solution preparation system of the present invention at least have following beneficial effect:
The ultrapure water production system that the embodiment of the present invention provides have employed the design of brand-new system, mainly processed device three part by pretreatment unit, reverse osmosis treatment device and EDI to form, three partial device structures is compact, floor space is little for this, it is achieved thereby that the miniaturization of ultrapure water production system。Additionally this ultrapure water production system prepares ultra-pure water by former water is sequentially carried out preliminary filtration, reverse-osmosis treated and EDI process, and whole process is without using strong acid, highly basic, so that the water stabilization of ultra-pure water。
Further; the pretreatment unit that the embodiment of the present invention provides is by carrying out reasonable disposition to filter assemblies and pressure control assembly; filter the silt in former water, granule, colloid, microorganism well on the one hand, follow-up reverse osmosis treatment device is played a very good protection；Realize the miniaturization of pretreatment unit, automatization on the other hand。
Further, the reverse osmosis treatment device that the embodiment of the present invention provides includes a reverse-osmosis treated unit or the reverse-osmosis treated unit of multiple connection in series-parallel setting, and each reverse-osmosis treated unit is by arranging the RO reverse-osmosis membrane element of one or more series connection, pressure flow detection components, pressure flow adjusting part, produce water detection components and concentrated water discharge assembly。Not only increased the reverse osmosis effect of reverse osmosis unit by above-mentioned setting, also realize the water inlet of reverse-osmosis treated, the product flow of water, pressure and water quality and carry out on-line monitoring and adjustment, it is achieved that the automatization of ultrapure water production system, intellectuality。
Further, the EDI process device that the embodiment of the present invention provides is by arranging water inlet control unit, water inlet detection regulon, having freshwater room, dense hydroecium, the EDI processing unit of pole hydroecium, product water monitoring unit and ultra-pure water collector unit, improve EDI treatment effect, the water inlet, the product flow of water, pressure and the water quality that also realize EDI is processed carry out on-line monitoring and adjustment, it is achieved that the automatization of ultrapure water production system, intellectuality。
To sum up, the ultrapure water production system that the embodiment of the present invention provides solves the small integrated problem of ultrapure water production system, is achieved the miniaturization of complete equipment by optimization technique, layout of beam line。Further, the ultrapure water production system that the embodiment of the present invention provides can run automatically, it is not necessary to professional is operated；Flow, pressure, water quality parameter on-line checking, system is run automatically according to parameter program。It addition, without using strong acid, highly basic in the preparation process of ultra-pure water, it is ensured that the water quality of ultra-pure water。
On the other hand, the urea for vehicle solution preparation system that the embodiment of the present invention provides is by adopting above-mentioned ultrapure water production system, and the intelligence not only achieving urea for vehicle solution produces, also improves the quality of urea for vehicle solution continuously。
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after。
Accompanying drawing explanation
Fig. 1 is the overall schematic of a kind of ultrapure water production system that embodiments of the invention provide；
Fig. 2 is the overall schematic of the another kind of ultrapure water production system that embodiments of the invention provide；
Fig. 3 is the schematic diagram of a kind of pretreatment unit that embodiments of the invention provide；
Fig. 4 is the schematic diagram of the reverse osmosis treatment device that embodiments of the invention provide；
Fig. 5 is the EDI that embodiments of the invention the provide schematic diagram processing device。
Detailed description of the invention
For further setting forth that the present invention reaches technological means and effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to the detailed description of the invention of the present patent application, structure, feature and effect thereof, describe in detail as after。In the following description, what different " embodiments " or " embodiment " referred to is not necessarily same embodiment。Additionally, special characteristic in one or more embodiment, structure or feature can be combined by any suitable form。
Embodiment 1
The present embodiment provides a kind of ultrapure water production system, and this ultrapure water production system is mainly used in the production of urea for vehicle solution, to prepare the ultra-pure water required for urea for vehicle solution produces。Specifically, the ultrapure water production system in the present embodiment includes by pipeline is sequentially connected with pretreatment unit, reverse osmosis treatment device and EDI process device。
Wherein, pretreatment unit includes filter assemblies, for former water is tentatively filtered, to remove granule in former water, chlorine residue, colloid and microorganism, plays the effect protecting follow-up reverse osmosis treatment device。
Reverse osmosis treatment device is for carrying out reverse-osmosis treated to the water after preliminary filtration so that it is meets EDI and processes the inflow requirement of device。Wherein, reverse osmosis treatment device includes a reverse-osmosis treated unit (ultrapure water production system as shown in Figure 2 includes a reverse-osmosis treated unit) or multiple connection in series-parallel (" connection in series-parallel " at this includes whole series connection, all parallel connection in parallel, existing again three kinds of situations of series connection) is arranged the reverse-osmosis treated unit reverse-osmosis treated unit of two series connection (ultrapure water production system as shown in Figure 1 include)。Further, each reverse-osmosis treated unit includes a RO reverse-osmosis membrane element (the reverse-osmosis treated unit in ultrapure water production system includes a RO reverse-osmosis membrane element 20 as shown in Figure 2) or the RO reverse-osmosis membrane element (one of them the reverse-osmosis treated unit in ultrapure water production system includes two RO reverse-osmosis membrane elements 201 being arranged in parallel as shown in Figure 1) of multiple connection in series-parallel setting。
EDI processes device for the water after reverse-osmosis treated is carried out EDI process。EDI processes water inlet control unit, water inlet detection regulon, EDI processing unit, product water monitoring unit and the ultra-pure water collector unit that device includes being sequentially connected with by pipeline。Wherein, water inlet control unit is controlled for the water inlet that EDI processes device。Water inlet detection regulon is for regulating freshwater room in EDI processing unit, dense hydroecium, the intake pressure of pole hydroecium, flow of inlet water。Produce the water monitoring unit water quality for on-line monitoring the produced fresh water of EDI processing unit。Ultra-pure water collector unit is for collecting the fresh water that EDI processing unit produces。
The ultrapure water production system that the present embodiment provides have employed the design of brand-new system, mainly processed device three part by pretreatment unit, reverse osmosis treatment device and EDI to form, three partial device structures is compact, floor space is little for this, it is achieved thereby that the miniaturization of ultrapure water production system。Additionally this ultrapure water production system prepares ultra-pure water by former water is sequentially carried out preliminary filtration, reverse-osmosis treated and EDI process, and whole process is without using strong acid, highly basic, so that the water stabilization of ultra-pure water。
Embodiment 2
Preferably; the present embodiment provides a kind of ultrapure water production system; compared with a upper embodiment, in the present embodiment, the filter assemblies of pretreatment unit includes one or more in fore filter, candle filter (can be selected for coiling candle filter or melt-blown PP cotton candle filter) and adsorption filter (can be selected for granular activated carbon filter or carbon block filter)。Specifically, above-mentioned filter can be increased and decreased according to local water quality and configure by the filter assemblies of pretreatment unit。
Preferably; as shown in figures 1 and 3, the filter assemblies in the pretreatment unit in the present embodiment can be configured to as follows: the fore filter 111 that is sequentially connected with by pipeline, coiling candle filter 112 (the coiling candle filter at this can replace with melt-blown PP cotton candle filter), granular activated carbon filter 113 (granular activated carbon filter at this can replace with carbon block filter)。At this, fore filter 111 selects 40 μm of auto-flushing stainless (steel) wire fore filters, to filter silt solid particle or the impurity of in former water more than 40 μm。20 cun 10 μm rustless steel coiling candle filters of 5 core selected by coiling candle filter 112, to filter the solid particle of more than 10 μm in former water。Granular activated carbon filter 113 selects 20 cun of 10 μm of granular activated carbon filters of 5 core; to adsorb the chlorine residue and partial organic substances contained in former water, it is ensured that enter in the water of reverse osmosis treatment device without chlorine residue (chlorine residue with strong oxidizing property touches the effect that the functional layer generation degraded on its surface can be destroyed by reverse osmosis membrane)。
It addition, fore filter 111, coiling candle filter 112, granular activated carbon filter 113 are except selecting above-mentioned filtering accuracy, it is also possible to select other precision according to the concrete water quality in locality。
If it is preferred that when the ultrapure water production system in the present embodiment is applied in water quality poor regional, the filter assemblies in the present embodiment also includes ultrafiltration membrane elements 114。Wherein, ultrafiltration membrane elements 114 is arranged on the upstream of reverse osmosis treatment device, it is preferable that be arranged on the downstream pipe of granular activated carbon filter 113。With remove further in former water more than 0.1 μm granule, colloid, partial organic substances, virus, microorganism。It is preferred that ultrafiltration membrane elements is preferably the flushable ultrafiltration membrane elements of PVDF。It is preferred that ultrafiltration membrane elements 114 is connected to the first flushing line for rinsing ultrafiltration membrane elements, the first flushing line is provided with the first washing control valve 15, is controlled with the flushing to hyperfiltration membrane assembly 114。It is preferred that the first washing control valve 15 selects electrical ball valve, to realize the flushing of hyperfiltration membrane assembly 114 is automatically controlled。
It addition, in the present embodiment, the configuration of pretreatment unit is variable, considers whether to arrange ultrafiltration membrane elements 114 according to local water quality situation。Area as good in, water quality is without arranging ultrafiltration membrane elements 114。At this, by the installation site of ultrafiltration membrane elements 114 in advance, can also removing fore filter and coiling candle filter in the good area of water quality, namely filter assemblies only includes the ultrafiltration membrane elements and the adsorption filter that are sequentially connected with by pipeline simultaneously。
It addition, " upstream ", " downstream " that the present embodiment and following embodiment are mentioned is that the flow direction according to current defines。
Follow-up reverse osmosis treatment device, by filter assemblies carries out the silt that can filter well in former water as configured above, granule, colloid, microorganism, is played a very good protection by the device of the pretreatment that the present embodiment provides。
Embodiment 3
It is preferred that the present embodiment provides a kind of ultrapure water production system, compared with embodiment 2, the pretreatment unit of the present embodiment also includes pressure control assembly, is mainly used in controlling the intake pressure of pretreatment unit and filter assemblies。
Specifically, as shown in figures 1 and 3, pressure control assembly includes air relief valve 121, pressure transducer 122, controls valve 123 and booster pump 124。Wherein, air relief valve 121 is arranged in the upstream of fore filter 111, and the former water pressure for controlling to enter pretreatment unit is not more than the first setting value；It is preferred that the first setting value is 0.4MPa。Pressure transducer 122 is arranged on the pipeline between fore filter 111 and coiling candle filter 112, for detecting the discharge pressure of fore filter 111。Control valve 123 and be arranged on the pipeline between pressure transducer 122 and coiling candle filter 112；At this, pressure transducer 122 forms low-voltage variation mechanism with controlling valve 123；If the intake pressure that pressure transducer detects is less than the second setting value (it is preferred that the second setting value is 0.2MPa), second controls valve 123 is then closed, and makes pretreatment unit quit work。It is preferred that control valve 123 to select electrical ball valve。Booster pump 124 is arranged on the pipeline between the second control valve 123 and coiling candle filter 112, for the intake pressure of coiling candle filter 112 is pressurized to the 3rd setting value。
It addition, pretreatment unit also includes water inlet control valve 14 and non-return valve 13。Wherein, water inlet control valve 14 is arranged in the upstream of air relief valve 121, is used for controlling former water and enters in pretreatment unit。It is preferred that water inlet control valve 14 is preferably manual ball valve。Non-return valve 13 is arranged in the upstream of fore filter 111 (pipeline between preferred air relief valve 121 and fore filter 111)；Non-return valve 13 is used for preventing air from entering in ultrapure water production system, gets rid of the risk broken down because air enters system。
The present embodiment is by carrying out rational deployment to the pressure control assembly of pretreatment unit, while former water is carried out pretreatment efficiency, it is achieved the miniaturization of pretreatment unit, automatization。
The work process that former water is carried out preliminary filtration by the pretreatment unit that the present embodiment provides is specific as follows: the manual ball valve 14 that the former water in qualified municipal tap water meeting GB5749-2006 standard passes through to open enters in the pretreatment unit of ultrapure water production system。Guarantee that the former water pressure entered in pretreatment unit is not more than 0.4MPa by the effect of air relief valve 121。Guarantee that air cannot enter ultrapure water production system from the water inlet of pretreatment unit by the effect of non-return valve 13, get rid of the risk broken down because air enters system。The former water entering pretreatment unit filters the silt solid particle (regular auto-flushing will be deposited in the contaminant exclusion of screen surface) of more than 40 μm therein after air relief valve 121 reduces pressure through 40 μm of auto-flushing stainless (steel) wire fore filters 111。Pressure transducer 122 and electrical ball valve 123 combination form low-voltage variation mechanism, and as the second setup pressure value 0.2MPa that the intake pressure of pressure transducer 122 sensing designs lower than system, electrical ball valve 123 is closed, system stalls。5 core, 20 cun of 10 μm of rustless steel granular activated carbon filters 113 of 20 cun 10 μm rustless steel coiling candle filter 112 and 5 cores are sequentially entered after former water intensified pump 124 supercharging after fore filter 111 filters。Solid particle more than 10 μm in being dewatered by coiling candle filter 112, can adsorb the chlorine residue in water and partial organic substances by granular activated carbon filter 113, it is ensured that enter in the water of reverse-osmosis treated unit without chlorine residue。Finally, through granular activated carbon filter 113 filter after former water through PVDF flushable ultrafiltration membrane elements 114 filter after remove more than 0.1 μm therein granule, colloid, partial organic substances, virus, microorganism。It addition, realize the film surface of ultrafiltration membrane elements 114 is rinsed by the first washing control valve 15。When the flux decline of ultrafiltration membrane elements 114 carries out manual flushing to need to be disassembled by the filter element of ultrafiltration membrane elements when auto-flushing also cannot return to 1t/h。
Embodiment 4
Preferably, the present embodiment provides a kind of ultrapure water production system, compared with embodiment 1, as in figure 2 it is shown, each reverse-osmosis treated unit of reverse osmosis treatment device also includes in the present embodiment: pressure flow detection components, pressure flow adjusting part and product water detection components。
Wherein, pressure flow adjusting part is arranged in the upstream of pressure flow detection components。Further, pressure flow adjusting part includes high-pressure pump 21 and the first adjustment valve 22 (wherein, first regulating valve 22 preferably manual ball valve)。First regulates valve 22 is arranged on the backflow branch road in parallel with high-pressure pump 21 two ends。By high-pressure pump 21 water of preprocessed device pretreatment is pressurized to the operating pressure (e.g., 0.8 or 1.6MPa) of RO reverse-osmosis membrane element 20。Wherein, flow and pressure can be regulated within the specific limits by the first adjustment valve 22 on backflow branch road in parallel with high-pressure pump 21。
Wherein, pressure flow detection components, including the pressure transducer 23 and the pulsed effusion meter (not shown) that are arranged on RO reverse-osmosis membrane element 20 upstream, (namely pressure and flow that high-pressure pump 21 can export water carry out on-line monitoring, the intake pressure of monitoring reverse-osmosis treated unit and flow of inlet water), when flow is less than 1t/h, system sends prompting。
Produce water detection components to be arranged on the downstream pipe of RO reverse-osmosis membrane element 20。Specifically, produce water detection components and include the conductivity meter 24 producing water water quality for on-line monitoring reverse osmosis membrane processing unit；When producing electrical conductivity of water more than 40 μm of S cm, system sends prompting。It addition, the product water pressure of reverse-osmosis treated unit and the flow pressure transducer (not shown) that can pass through to be arranged on the downstream pipe of RO reverse-osmosis membrane element and pulsed effusion meter 25 carry out on-line monitoring。
The ultrapure water production system that the present embodiment provides is by carrying out as set above to reverse-osmosis treated unit, it is achieved that the automatically operation of system, be operated without professional, the purpose of flow, pressure and water quality parameter on-line checking。
Embodiment 5
It is preferred that the present embodiment provides a kind of ultrapure water production system, compared with embodiment 4, as in figure 2 it is shown, each reverse-osmosis treated unit of reverse osmosis treatment device also includes concentrated water discharge assembly in the present embodiment。Specifically, concentrated water discharge assembly includes concentrated water discharge pipeline and the second flushing line。Wherein, concentrated water discharge pipeline is connected with the concentrated water discharge mouth of RO reverse-osmosis membrane element 20。Be provided with pressure transducer 26 on concentrated water discharge pipeline, concentrated water discharge controls valve 27 and effusion meter 28 (being preferably pulsed effusion meter)。Wherein, the pressure and the flow that discharge dense water carry out on-line monitoring by pressure transducer 26, effusion meter 28。Second flushing line is connected with the concentrated water discharge mouth of RO reverse-osmosis membrane element 20, and the second flushing line is provided with the second washing control valve 29, to control the flushing to RO reverse-osmosis membrane element。The second preferred electromagnetic valve of washing control valve 29。Force to realize the flushing to RO reverse-osmosis membrane element 20 by electromagnetic valve 29 under flushing facilities during each start or after running one hour continuously。
Embodiment 6
It is preferred that the present embodiment provides a kind of ultrapure water production system, compared with embodiment 5, in the present embodiment, reverse osmosis treatment device includes two reverse-osmosis treated unit being arranged in series, respectively first-stage reverse osmosis processing unit and two-pass reverse osmosis processing unit。Wherein, first-stage reverse osmosis processing unit carries out first-stage reverse osmosis process for the water after preprocessed device is tentatively filtered。Water after first-stage reverse osmosis processes is carried out two-pass reverse osmosis process by two-pass reverse osmosis processing unit。
As shown in Figure 1 and Figure 4, first-stage reverse osmosis processing unit includes two one-level RO reverse-osmosis membrane elements 201 being arranged in parallel。The pretreated water of preprocessed device is pressurized to the operating pressure of one-level RO reverse-osmosis membrane element 201 (e.g., 0.6 or 1.6MPa) through one-level high-pressure pump 211。The pressure and the flow that enter water in first-stage reverse osmosis processing unit can regulate valve 221 (being preferably manual ball valve) by first on backflow branch road in parallel with one-level high-pressure pump 211 and regulate within the specific limits。The water of one-level high-pressure pump 211 output can be carried out on-line monitoring by pressure transducer 231, pulsed effusion meter, and when flow is less than 1t/h, system sends prompting。Respectively enter in 2 one-level RO reverse-osmosis membrane elements 201 through the water of one-level high-pressure pump 211 supercharging and purify。Controlling valve 271 according to local condition of water quality by concentrated water discharge and can regulate pure water/dense Water Sproading rate, the one-level RO reverse-osmosis membrane element response rate is generally located on 30-50%。By pressure transducer 261, effusion meter 281, the pressure of concentrated water discharge, flow are carried out on-line checking。Start or continuously operation 1 hour every time, realize the flushing to two one-level RO reverse-osmosis membrane elements 201 by controlling the second washing control valve 291 on the second flushing line。The product discharge of one-level RO reverse-osmosis membrane element 201, by effusion meter 251 on-line checking, is produced water water quality and is carried out on-line monitoring by conductivity meter 241, and when producing water water quality more than 40 μ S cm, system sends prompting。
Two-pass reverse osmosis processing unit includes two grades of RO reverse-osmosis membrane elements 202。The water that produces of first-stage reverse osmosis processing unit enters two grades of high-pressure pumps 212 and is pressurized to the operating pressure (e.g., 0.6 or 1.6MPa) of two grades of RO reverse-osmosis membrane elements 202。Flow and pressure can by regulating with the manual ball valve 222 on two grades of high-pressure pump 212 backflow in parallel branch roads within the specific limits。Through the supercharging of two grades of high-pressure pumps 212 water enter two grades of RO reverse-osmosis membrane elements 202 purify。Controlling valve 272 according to local condition of water quality by concentrated water discharge and can regulate pure water/dense Water Sproading rate, two grades of RO reverse-osmosis membrane element response rate are generally located on 40-90%。By pressure transducer 262, effusion meter 282, concentrated water discharge pressure, flow are carried out on-line checking。Start or continuously operation 1 hour every time, realize the flushing to two grades of RO reverse-osmosis membrane elements 202 by controlling the second washing control valve 292 on the second flushing line。The product discharge of two grades of RO reverse-osmosis membrane elements 202, by effusion meter 252 on-line checking, is produced water water quality and is carried out on-line monitoring by conductivity meter 242, and when producing water water quality more than 20 μ S cm, system sends prompting。
It addition, reverse osmosis treatment device also includes first row water lines 51, concentrated water discharge pipeline and second flushing line of reverse-osmosis treated unit are connected to first row water lines 51。It is preferred that the first flushing line in pretreatment unit also connects with first row water lines 51。It is preferred that the highest point in first row water lines 51 is additionally provided with air bleeding valve 511, it is used for getting rid of the gas accumulated in first row water lines, it is prevented that the generation of back pressure。
It is preferred that be additionally provided with non-return valve 290 on the concentrated water discharge pipeline of two-pass reverse osmosis processing unit, the discharge of the dense water of two-pass reverse osmosis processing unit is produced impact by the dense water being used for preventing first-stage reverse osmosis processing unit from discharging。
Embodiment 7
It is preferred that the present embodiment provides a kind of ultrapure water production system, compared with above-described embodiment, as in figure 2 it is shown, reverse osmosis treatment device only includes a reverse-osmosis treated unit in the present embodiment, and this reverse-osmosis treated unit includes a RO reverse-osmosis membrane element 20。It is regional preferably that reverse osmosis treatment device in the present embodiment is applicable to water quality。Described in its work process reference example 6, do not repeat to repeat at this。
The reverse osmosis treatment device that above-described embodiment provides arranges the reverse-osmosis treated unit of a reverse-osmosis treated unit or multiple series connection according to local water quality, and each reverse-osmosis treated unit is by arranging the RO reverse-osmosis membrane element of one or more series connection, pressure flow detection components,, pressure flow adjusting part, product water detection components and concentrated water discharge assembly。Not only increased the reverse osmosis effect of reverse osmosis unit by above-mentioned setting, also realize the water inlet of reverse-osmosis treated, the product flow of water, pressure and water quality and carry out on-line monitoring and adjustment, it is achieved that the automatization of ultrapure water production system, intellectuality。
Embodiment 8
It is preferred that the present embodiment provides a kind of ultrapure water production system, compared with above-described embodiment, as shown in Figure 1, Figure 2 and shown in Fig. 4, the ultrapure water production system in the present embodiment also includes intermediate water tank 3。Wherein, intermediate water tank 3 is arranged on the downstream pipe of reverse osmosis treatment device, EDI processes in the upstream of device, for collecting the product water of described reverse osmosis treatment device。As shown in Figure 1 and Figure 4, intermediate water tank 3 is arranged on the downstream pipe of two-pass reverse osmosis processing unit。
It is preferred that be provided with the fluid level control device for the setting liquid level of intermediate water tank is controlled in intermediate water tank 3, and intermediate water tank strict seal；Wherein, set liquid level and have four points (i.e. 4 Liquid level points), the highest reserved Liquid level point is (namely, the reserved peak level of intermediate water tank) for insuring water lev el control point, this reserved high water level does not contact water at ordinary times, when peak level controls to lose efficacy, reserved high water level plays the effect preventing intermediate water tank generation overflow。The top of intermediate water tank 3 is provided with respiratory organ 31, while being used for getting rid of excessive gas, it is ensured that outside solid particle cannot be introduced into intermediate water tank。
The lower end of intermediate water tank 3 is provided with outlet conduit, and outlet conduit is provided with outlet water control valve 32, for controlling the water outlet of intermediate water tank 3；It is preferred that outlet water control valve 32 is preferably manual ball valve。It addition, the free end of outlet conduit is additionally provided with reserved discharge outlet 33。It is preferred that the water inlet of intermediate water tank 3 is arranged on the bottom of water tank 3。
Embodiment 9
Preferably, the present embodiment provides a kind of ultrapure water production system, compared with above-described embodiment, as shown in Figure 1 and Figure 5, the water inlet control unit that in the present embodiment, EDI processes in device includes: inlet pipeline and the EDI booster pump 412 being arranged on inlet pipeline and water inlet control valve 411 (wherein, water inlet control valve 411 is preferably electrical ball valve)。The upstream side of inlet pipeline connects with intermediate water tank 3, and the downstream of inlet pipeline is connected with water inlet detection regulon。
It is preferred that water inlet control unit also includes the backflow branch road in parallel with inlet pipeline, the downstream of backflow branch road is connected with intermediate water tank 3；This backflow branch road is provided with the second adjustment valve 413 (wherein, second regulates valve 413 is preferably manual ball valve), for regulating intake pressure and the flow of inlet pipeline within the specific limits。If this backflow branch road is connected with the lower end of intermediate water tank 3, this backflow branch road needs to arrange a non-return valve。
It is preferred that the water inlet EDI processing unit in the present embodiment includes freshwater room and dense hydroecium。Or described EDI processing unit includes freshwater room, dense hydroecium and pole hydroecium。
It is preferred that the water inlet detection regulon in the present embodiment includes the first branch road and the second branch road that are arranged in parallel。Wherein, wherein, described first branch road, the second branch road upstream extremity be all connected with the downstream of described water inlet control unit。The downstream of the first branch road is connected with the import of freshwater room；First branch road is provided with pressure transducer 421, effusion meter and inlet regulating valve 422 (being preferably needle stop valve), for detecting and regulate intake pressure and the flow of inlet water of freshwater room。The downstream of the second branch road is connected with the import of dense hydroecium, and the second branch road is provided with pressure transducer 423, effusion meter 424 and inlet regulating valve 425 (being preferably needle stop valve), for detecting and regulate pressure and the flow of the water inlet of dense hydroecium。When EDI processing unit also includes pole hydroecium, EDI processes the water inlet detection regulon of device and also includes and the 3rd branch road of described first branch road, the second branch circuit parallel connection；The upstream extremity of the 3rd branch road is all connected with the downstream of described water inlet control unit；The downstream of the 3rd branch road is connected with the import of pole hydroecium, and the 3rd branch road is provided with pressure transducer 426, effusion meter 427 and inlet regulating valve 428 (being preferably needle stop valve), for detecting and regulate pressure and the flow of pole hydroecium water inlet。It is preferred that the flow of inlet water of freshwater room controls at 80-120L/h in the present embodiment；The flow of inlet water of dense hydroecium controls at 12-18L/h；The flow of inlet water of pole hydroecium controls at 3-5L/h。
It is preferred that the EDI in the present embodiment processes device also includes the power supply for providing electric energy to EDI processing unit, wherein, operating voltage range is 50-100V；Electric current is 0.2-0.3A。
It is preferred that EDI produces water on-line monitoring unit includes being connected to resistivity meter 442 on freshwater room outlet pipeline。Wherein, when resistivity is lower than 2M Ω cm, system sends prompting。The effusion meter 441 that EDI product water on-line monitoring unit also includes being connected on freshwater room outlet pipeline is for detecting the flow of EDI product water。
It is preferred that ultra-pure water collector unit includes ultra-pure water collects water tank 45, ultra-pure water is collected water tank 45 and is connected with the outlet pipeline of freshwater room, for collecting the fresh water that EDI module is produced。It is preferred that ultra-pure water is collected is provided with respiratory organ 451 on water tank 45, to realize the pressure balance within pure water collection water tank 45, and guarantee that exterior materials cannot be introduced into water tank。Preferably, ultra-pure water is collected and is additionally provided with fluid level control device on water tank 45, with control ultra-pure water collect water tank liquid level (at this, ultra-pure water is collected the function of the fluid level control device on water tank 45 and can, referring to the fluid level control device on the intermediate water tank in embodiment 8, do not repeated to repeat at this)。Preferably, ultra-pure water is collected the lower end of water tank and is provided with the pipeline 454 for connecting stirring flow process (wherein, this rolls road 454 for connecting the agitator tank in urea for vehicle solution preparation system, concrete detailed in Example 10) and outlet pipeline, outlet pipeline is provided with outlet water control valve 452, and the end of outlet pipeline is provided with reserved discharge outlet 453。
It is preferred that EDI in the present embodiment processes device also includes EDI discharge pipe line 52, it is used for connecting in EDI module dense hydroecium and pole hydroecium。
It is preferred that water inlet detects is additionally provided with a control valve 414 on the pipeline between regulon and water inlet control unit, this control valve 414 is preferably rustless steel needle-valve。
The EDI that the present embodiment provides processes device by above-mentioned setting, improves EDI treatment effect, also realizes anti-EDI water inlet, the product flow of water, pressure and the water quality processed and carries out on-line monitoring and namely regulate, it is achieved that the automatization of ultrapure water production system, intellectuality。
It is preferred that when in water, carbon dioxide is along when affecting effluent quality, the pretreatment unit in above-described embodiment can add a degasser, to carry out deviating from of carbon dioxide, thus ensureing the water quality of ultra-pure water。When requiring higher effluent quality (such as 18M Ω cm), can installing a polishing resin unit additional and be further purified after EDI processes device, compared with common process, the polishing resin unit volume installed additional to be greatly reduced。
It is preferred that the pipeline highest point in the ultrapure water production system provided in above-described embodiment is provided with air bleeding valve, so that pipeline to be protected and to guarantee the water quality of ultra-pure water。
To sum up, the ultrapure water production system that the above embodiment of the present invention provides solves the small integrated problem of ultrapure water production system, is achieved the miniaturization of complete equipment by optimization technique, layout of beam line。Further, the ultrapure water production system that stating embodiment provides can run automatically, it is not necessary to professional is operated；Flow, pressure, water quality parameter on-line checking, system is run automatically according to parameter program。It addition, without using strong acid, highly basic in the preparation process of ultra-pure water, it is ensured that the water quality of ultra-pure water。
Embodiment 10
On the other hand, the present embodiment provides a kind of urea for vehicle solution preparation system, and wherein, this urea for vehicle solution preparation system includes the ultrapure water production system of any of the above-described embodiment。
It is preferred that the preparation system of the urea for vehicle solution in the present embodiment also includes agitator tank, this agitator tank has ultra-pure water import, urea granules import and urea for vehicle taphole。Wherein, ultra-pure water import is connected with the ultra-pure water collection water tank in ultrapure water production system。
The urea for vehicle solution preparation system that the present embodiment provides is by adopting the ultrapure water production system of above-described embodiment, and the intelligence not only achieving urea for vehicle solution produces, also improves the quality of urea for vehicle solution continuously。
In sum, skilled addressee readily understands that, under the premise do not conflicted, above-mentioned each advantageous manner can freely combine, superposition。
The above, it it is only presently preferred embodiments of the present invention, not the present invention is done any pro forma restriction, according to any simple modification, equivalent variations and modification that above example is made by the technical spirit of the present invention, all still falls within the scope of technical solution of the present invention。

Claims (23)

1. a ultrapure water production system, it is characterised in that pretreatment unit, reverse osmosis treatment device and EDI that described ultrapure water production system includes by pipeline is sequentially connected with process device；Wherein,
Described pretreatment unit includes filter assemblies, for former water is tentatively filtered；
Reverse osmosis treatment device, for carrying out reverse-osmosis treated to the water after preliminary filtration；Wherein, described reverse osmosis treatment device includes a reverse-osmosis treated unit or the reverse-osmosis treated unit of multiple connection in series-parallel setting；Further, each described reverse-osmosis treated unit includes a RO reverse-osmosis membrane element or multiple RO reverse-osmosis membrane element；
EDI processes device, for the water after reverse-osmosis treated is carried out EDI process；Wherein, described EDI processes water inlet control unit, water inlet detection regulon, EDI processing unit, product water monitoring unit and the ultra-pure water collector unit that device includes being sequentially connected with by pipeline。
2. ultrapure water production system according to claim 1, it is characterised in that described filter assemblies includes one or more in fore filter, candle filter, adsorption filter；
Wherein, described candle filter is coiling candle filter or melt-blown PP cotton candle filter；
Described adsorption filter is granular activated carbon filter or carbon block filter。
3. ultrapure water production system according to claim 2, it is characterised in that
Described fore filter selects the stainless (steel) wire fore filter of 40 μm, to filter the granule of more than 40 μm in former water；
The rustless steel coiling candle filter of 10 μm selected by described coiling candle filter, to filter the granule of more than 10 μm in former water；
Described granular activated carbon filter selects the granular activated carbon filter of 10 μm, to adsorb the chlorine residue contained in former water。
4. the ultrapure water production system according to Claims 2 or 3, it is characterised in that described filter assemblies also includes ultrafiltration membrane elements；Wherein, described ultrafiltration membrane elements is arranged on the upstream of described reverse osmosis treatment device。
5. ultrapure water production system according to claim 4, it is characterised in that described ultrafiltration membrane elements selects PVDF ultrafiltration membrane element capable of washing。
6. ultrapure water production system according to claim 5, it is characterised in that described ultrafiltration membrane elements is connected to the first flushing line, for being rinsed ultrafiltration membrane elements；Wherein, described first flushing line is provided with the first washing control valve, is controlled with the flushing to described ultrafiltration membrane elements。
7. ultrapure water production system according to claim 2, it is characterised in that described pretreatment unit also includes pressure control assembly, wherein, described pressure control assembly includes:
Air relief valve, described air relief valve is arranged in the upstream of described fore filter, is not more than the first setting value for the former water pressure controlling to enter in described pretreatment unit；
Pressure transducer, described pressure transducer is arranged on the pipeline between described fore filter and coiling candle filter, for detecting the discharge pressure of described fore filter；
Controlling valve, described control valve is arranged on the pipeline between described pressure transducer and coiling candle filter；If the discharge pressure that pressure transducer detects is less than the second setting value, then controls valve and be closed, make described pretreatment unit quit work；
Booster pump, described booster pump is arranged on the pipeline between described control valve and coiling candle filter, for the intake pressure of described coiling candle filter is pressurized to the 3rd setting value。
8. ultrapure water production system according to claim 7, it is characterised in that described pretreatment unit also includes water inlet control valve and non-return valve；Wherein,
Described water inlet control valve is arranged in the upstream of described air relief valve, is used for controlling former water and enters in described pretreatment unit；
Described non-return valve is arranged on the pipeline between described air relief valve and described fore filter, is used for preventing air from entering in described ultrapure water production system。
9. ultrapure water production system according to claim 1, it is characterised in that each described reverse-osmosis treated unit also includes:
Pressure flow detection components, described pressure flow detection components, it is arranged in the upstream of described RO reverse-osmosis membrane element, for detecting intake pressure and the flow of inlet water of reverse-osmosis treated unit；
Pressure flow adjusting part, described pressure flow adjusting part is arranged in the upstream of described intake pressure detection components, for regulating intake pressure and the flow of inlet water of reverse-osmosis treated unit；
Producing water detection components, described product water detection components is arranged on the downstream pipe of described RO reverse-osmosis membrane element, for detecting the product water water quality of reverse-osmosis treated unit。
10. ultrapure water production system according to claim 9, it is characterised in that
Described pressure flow detection components includes pressure transducer and effusion meter；
Described pressure flow adjusting part includes high-pressure pump and first and regulates valve；Wherein, described high-pressure pump is arranged in the upstream of described pressure flow detection components；Described first regulates valve is arranged on the backflow branch road in parallel with described high-pressure pump two ends；
Described product water detection components includes the conductivity meter producing water water quality for detecting reverse-osmosis treated unit。
11. ultrapure water production system according to claim 1, it is characterised in that each described reverse-osmosis treated unit also includes concentrated water discharge assembly；Wherein, described concentrated water discharge assembly includes:
Concentrated water discharge pipeline, described concentrated water discharge pipeline is connected with the concentrated water discharge mouth of described RO reverse-osmosis membrane element；And concentrated water discharge pipeline is provided with concentrated water discharge for controlling concentrated water discharge control valve, for detecting the pressure transducer of concentrated water discharge pressure and for detecting the effusion meter of concentrated water discharge flow；
Second flushing line, described second flushing line is connected with the concentrated water discharge mouth of described RO reverse-osmosis membrane element；Described second flushing line is provided with the second washing control valve, to control the flushing to RO reverse-osmosis membrane element。
12. according to the ultrapure water production system described in any one of claim 9-11, it is characterised in that described reverse osmosis treatment device includes two reverse-osmosis treated unit being arranged in series, respectively first-stage reverse osmosis processing unit and two-pass reverse osmosis processing unit；Wherein,
Described first-stage reverse osmosis processing unit carries out first-stage reverse osmosis process for the water after preprocessed device is tentatively filtered；Wherein, described first-stage reverse osmosis processing unit includes two RO reverse-osmosis membrane elements being arranged in parallel；
Water after first-stage reverse osmosis processes is carried out two-pass reverse osmosis process by described two-pass reverse osmosis processing unit；Wherein, described two-pass reverse osmosis processing unit includes a RO reverse-osmosis membrane element。
13. according to the ultrapure water production system described in any one of claim 9-11, it is characterised in that described reverse osmosis treatment device includes a reverse-osmosis treated unit, and described reverse-osmosis treated unit includes a RO reverse-osmosis membrane element。
14. ultrapure water production system according to claim 12, it is characterised in that when described reverse-osmosis treated unit includes concentrated water discharge assembly, the concentrated water discharge pipeline of described two-pass reverse osmosis processing unit is additionally provided with non-return valve。
15. ultrapure water production system according to claim 1, it is characterised in that described ultrapure water production system also includes intermediate water tank；Wherein, described intermediate water tank is arranged on the downstream pipe of described reverse osmosis treatment device, described EDI processes in the upstream of device, for collecting the product water of described reverse osmosis treatment device。
16. ultrapure water production system according to claim 15, it is characterised in that be provided with fluid level control device on described intermediate water tank, for being controlled the setting liquid level of intermediate water tank；Wherein, described setting liquid level includes reserved peak level, during for losing efficacy at the peak level control point of intermediate water tank, it is prevented that intermediate water tank generation overflow；
Described intermediate water tank is additionally provided with respiratory organ, for realizing the balance of described intermediate water tank internal pressure, and guarantees that outer solid granule cannot be introduced in described intermediate water tank。
17. ultrapure water production system according to claim 15, it is characterised in that the water inlet control unit that described EDI processes in device includes: inlet pipeline and the EDI booster pump being arranged on inlet pipeline and water inlet control valve；Wherein, the upstream extremity of described inlet pipeline connects with described intermediate water tank；The downstream of described inlet pipeline connects with described water inlet detection regulon。
18. ultrapure water production system according to claim 17, it is characterised in that described water inlet control unit also includes the backflow branch road in parallel with described inlet pipeline；The downstream of described backflow branch road is connected with described intermediate water tank；Described backflow branch road is provided with the second adjustment valve, processes intake pressure and the flow of inlet water of device for regulating EDI。
19. ultrapure water production system according to claim 1, it is characterised in that described EDI processing unit includes freshwater room and dense hydroecium；Or described EDI processing unit includes freshwater room, dense hydroecium and pole hydroecium。
20. ultrapure water production system according to claim 18, it is characterised in that described EDI processes the water inlet of device and detects the first branch road and the second branch road that regulon includes being arranged in parallel；
Wherein, described first branch road, the second branch road upstream extremity be all connected with the downstream of described water inlet control unit；
The downstream of described first branch road is connected with the import of described freshwater room；Described first branch road is provided with pressure transducer and inlet regulating valve, for detecting the intake pressure of described freshwater room and regulating intake pressure and the flow of inlet water of described freshwater room；
The downstream of described second branch road is connected with the import of described dense hydroecium；Be provided with pressure transducer on described second branch road, flow takes into account inlet regulating valve, for detecting and regulate pressure and the flow of inlet water of the water inlet of described dense hydroecium；
Wherein, when described EDI processing unit also includes pole hydroecium, described EDI processes the water inlet detection regulon of device and also includes and the 3rd branch road of described first branch road, the second branch circuit parallel connection；Wherein,
The upstream extremity of described 3rd branch road is connected with the downstream of described water inlet control unit；The downstream of described 3rd branch road is connected with the import of described pole hydroecium, and described 3rd branch road is provided with pressure transducer, flow takes into account inlet regulating valve, for detecting and regulate intake pressure and the flow of inlet water of described pole hydroecium。
21. ultrapure water production system according to claim 19, it is characterised in that described EDI processes the product water monitoring unit of device and includes resistivity meter, and described resistivity meter is arranged on the outlet pipeline of described freshwater room。
22. ultrapure water production system according to claim 19, it is characterized in that, described ultra-pure water collector unit includes ultra-pure water and collects water tank, and described ultra-pure water is collected water tank and is connected with the outlet pipeline of described freshwater room, for collecting the fresh water that described EDI processing unit produces。
23. a urea for vehicle solution preparation system, it is characterised in that described urea for vehicle solution preparation system includes the ultrapure water production system described in any one of claim 1-22。
CN201610216843.4A 2016-04-08 2016-04-08 Ultrapure water preparation system and urea solution preparation system for vehicles Pending CN105692973A (en)

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Application publication date: 20160622