CN105347539A - Integrated and automatic device for recycling water in industrial wastewater - Google Patents
Integrated and automatic device for recycling water in industrial wastewater Download PDFInfo
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- CN105347539A CN105347539A CN201510931883.2A CN201510931883A CN105347539A CN 105347539 A CN105347539 A CN 105347539A CN 201510931883 A CN201510931883 A CN 201510931883A CN 105347539 A CN105347539 A CN 105347539A
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- 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
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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
- 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
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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
- 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
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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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
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention relates to an integrated and automatic device for recycling water in industrial wastewater. The integrated and automatic device comprises a pretreatment device, an ultrafiltration membrane, a back washing device and a reverse osmosis membrane, wherein the pretreatment device is used for filtering suspension particles and residual chlorine in wastewater; the ultrafiltration membrane is connected with the pretreatment device and is used for filtering impurities of fine-particle suspended matters of which the particle diameter is smaller than 0.1 mum, colloid, bacteria and the like in the wastewater; the back washing device is used for carrying out back washing on the ultrafiltration membrane at regular intervals, removing pollutants on the surface of the ultrafiltration membrane and recovering the membrane flux; the reverse osmosis membrane is connected with the ultrafiltration membrane and is used for carrying out desalting treatment on discharged water of the ultrafiltration membrane. According to the integrated and automatic device disclosed by the invention, integration and automation are realized; a membrane treatment technology is adopted; the water quality of processed water is good, and the water resource can be recycled, so that larger amount and higher demand for water are met, and the application range is wide.
Description
Technical field
The present invention relates to a kind of sewerage disposing technical field, especially relate to a kind of trade effluent Treated sewage reusing device of integrated and automatization.
Background technology
Middle water is because of purposes difference, generally there are three kinds of processing modes: 1, be processed to the standard of tap water and direct reuse in daily life, namely realizing water resources direct circulation utilizes, and this processing mode is applicable to the area that water resources extremely lacks, but invest high, complex process; 2, be the standard being processed to undrinkable water, be mainly used in not with direct body contact with water, as the flushing of closet, ground, automobile washing, greening is watered and is spilt, fire-fighting, the common water of industry etc., and this is common sewerage disposing mode; 3, the industrial sewage reaching outer row's standard is carried out reprocessing by the industrial technology of middle water recycle that can utilize; generally softening agent can be added; RO (reverse osmosis); the equipment such as EDI (continuous electric desalination technology)/mixed bed make it reach softening water; purified water, ultrapure water level, can carry out industrial cycle recycling; reach saving capital, the object of protection of the environment.
By treatment process, existing mid-water process craft is generally divided into 3 types: 1, physical treatment process, as membrane filtration, is applicable to the situation that change of water quality is large.Membrane filtration is under the effect of external force, and separated solution flows along filter membrane surface with certain flow velocity, and in solution, solvent and low molecular weight substance, mineral ion enter low-tension side from high-tension side through filter membrane, and discharge as filtrate; And polymer substance, colloidal particle and microorganism etc. are retained by ultra-filtration membrane in solution, solution is concentrated and discharges in a concentrated form.The feature of this flow process is adopted to be: device is compact, easily operates, and little by the impact of load change.2, physico-chemical processes, is applicable to the situation that sewage quality changes greatly.The method of general employing has: sand filtration, charcoal absorption, flotation, coagulating sedimentation etc.The feature of this flow process is: adopt hollow fiber membrane ultrafiltration device to process, advanced technology, compact construction, and take up an area few, system intermittent operation, management is simple.3, biological treatment, for the sewage that organic content is higher.The bioremediations such as general employing activated sludge process, contact oxidation method, blodisc.Or be used alone, or several bioremediation combinationally uses, as flow processs such as catalytic oxidation+biological filter, biological filter+charcoal absorption, rotating disk+sand filtrations.This flow process has the advantages such as adaptation hydraulic load variation ability is strong, generation sludge quantity is few, maintenance management is easy.
Although existing Treated sewage reusing treatment process can meet service requirements substantially, its floor space is large, operation management cost is high, and its level of automation is weak, and operation labour intensity is high; In addition, the phenomenons such as blocking easily appears in system, producing water ratio declines, and maintenance cost is high.
Summary of the invention
The object of the invention is to the defect overcoming prior art, a kind of trade effluent Treated sewage reusing device of integrated and automatization be provided, use membrane technology, with integrated, carry out sewerage disposing efficiently, ensure water treatment effect.
For achieving the above object, the present invention proposes following technical scheme: a kind of trade effluent Treated sewage reusing device of integrated automation, comprising:
Pre-processing device, for the suspended particle in filtered wastewater and chlorine residue;
Ultra-filtration membrane, is connected with described pre-processing device, is less than the suspended substance, colloid, bacterium etc. of 0.1 μm for particle diameter in filtered wastewater;
Backwashing equipment, for regularly carrying out back flushing to described ultra-filtration membrane;
Reverse osmosis membrane, is connected with described ultra-filtration membrane, for carrying out film desalination to the water outlet of ultra-filtration membrane.
Preferably, the fore filter that described pre-processing device comprises sand filter, the activated charcoal filter be connected with sand filter and is connected with activated charcoal filter, described sand filter and fore filter are used for the suspended particle in filtered wastewater, and described activated charcoal filter is for the organism in filtered wastewater and chlorine residue.
Preferably, the quartz sand filtration medium of two kinds of different-grain diameters is comprised in described sand filter, described quartz sand filtration medium particle diameter in sand filter increases from top to bottom, and the particle diameter that described sand filter top is filled is 0.4 ~ 2mm, and under-filled particle diameter is 2 ~ 6mm.
Preferably, also comprise the cartridge filter be connected with reverse osmosis membrane, for the suspended particle in the water outlet of further filtration Ultrafiltration film.
Preferably, described fore filter and cartridge filter include water inlet pipe and rising pipe, and described water inlet pipe is provided with control valve, and the import and export of described water inlet pipe and water outlet pipe is provided with tensimeter.
Preferably, between described activated charcoal filter and fore filter, between described ultra-filtration membrane and cartridge filter, also middle tank is set.
Preferably, described ultra-filtration membrane is hollow fiber ultrafiltration membrane, and its material is polyvinylidene difluoride (PVDF).
Preferably, the putamina of described reverse osmosis membrane is glass fiber reinforced plastic membrane, and the pressure that bears of described glass fiber reinforced plastic membrane is not less than 450psi, and described reverse osmosis membrane assembly connects according to the mode of one-level two sections, parallel connection in section, intersegmental series connection.
Preferably, described reverse osmosis membrane comprises water inlet pipe, fresh water water shoot and concentrated water drainage water pipe, described concentrated water drainage water pipe is equipped with flowrate control valve, and described fresh water water shoot and concentrated water drainage water pipe arrange multiple sampling spot.
Preferably, also comprise chemical cleaning system and medicine system, described chemical cleaning system is at least connected with ultra-filtration membrane, reverse osmosis membrane, and described medicine system is for reverse osmosis membrane dosing.
The invention has the beneficial effects as follows:
1, integrated, the automatization of present device, adopts the turbidity removal of different removal efficiency, desalination system, processes out fine water, water resources is recycled, thus meets more, higher water demand, has wide range of applications.
2, present device adopts membrane technology, and cost declines, and technical stability improves, and especially in high salt timesharing, embrane method cost is better than resin method.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the trade effluent Treated sewage reusing device of integrated automation of the present invention;
Fig. 2 is that schematic diagram is looked on a left side for the trade effluent Treated sewage reusing device of integrated automation of the present invention;
Fig. 3 is that schematic diagram is looked on the right side of the trade effluent Treated sewage reusing device of integrated automation of the present invention;
Fig. 4 is the schematic front view of the trade effluent Treated sewage reusing device of integrated automation of the present invention;
Fig. 5 is the schematic top plan view of the trade effluent Treated sewage reusing device of integrated automation of the present invention.
Reference numeral:
1, sand filter, 2, activated charcoal filter, 3, middle tank Isosorbide-5-Nitrae, middle tank 2,5, CIP tank, 6, pure water groove, 7, fore filter, 8, ultrafiltration backwash filter, 9, RO cartridge filter, 10, ultra-filtration membrane, 11, reverse osmosis membrane, 12, housing.
Embodiment
Below in conjunction with accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme of the embodiment of the present invention.
Shown in composition graphs 1 ~ Fig. 5, the trade effluent Treated sewage reusing device of disclosed a kind of integrated automation, mainly comprise pre-processing device, ultra-filtration membrane 10, backwashing equipment and reverse osmosis membrane 11, membrane technology is utilized to carry out Treated sewage reusing to waste water, the water quality of producing water is excellent, can meet more, higher water demand.
Pre-processing device is mainly used in suspended particle in filtered wastewater and chlorine residue, it comprises sand filter 1, activated charcoal filter 2 and fore filter 7, sand filter 1 is mainly used in removing SS (suspended solid), the colloidalmaterial in waste water, in the present embodiment, sand filter 1 adopts the quartz sand filtration medium of two kinds of different-grain diameters, quartz sand filtration medium in sand filter 1 from top to bottom particle diameter strengthen step by step, the particle diameter that sand filter top is filled is 0.4 ~ 2mm, and under-filled particle diameter is 2 ~ 6mm.Utilize Depth Filtration principle, increase the retaining power of sand filter 1, under a certain pressure, make water by this medium, remove suspended substance, mechanical impurity in water, play and reduce delivery turbidity object.In the present invention, the influent turbidity of sand filter 1 is less than 20 degree, and delivery turbidity can reach less than 3 degree, and equipment runs flow velocity 8 ~ 10m/h.
Activated charcoal filter 2 is mainly used in removing the remaining chlorine residue in waste water, also adsorbable organism, heavy metal class, oxidizing substance.The remaining chlorine residue contained in water is a kind of strong oxidizer, if do not removed, can cause irreversible damage to reverse osmosis membrane.Carry out adsorption treatment with gac, chlorine residue can be removed very up hill and dale.Gac is high adsorption capacity not only, and loading capacity is large, and because it is vesicular structure, and specific surface area is up to 500-700m
2/ g.Just because of gac, there is flourishing pore structure and huge specific surface area, therefore can chlorine residue completely in planar water and partial adsorbates organism, and also have good removal effect to colourity, stink.
Suspended particle in water, after sand filter 1 and activated charcoal filter 2 pre-treatment, still can remain some fine particles, and these two strainers can produce some suspended particles through the hydraulic friction of long-time running and back flushing.These impurity particles, as directly entered ultra-filtration membrane (UF) 10 along with water inlet, get off for a long time, can cause the blocking of ultra-filtration membrane 10.So the present invention's (namely between both) after activated charcoal filter 2, before ultra-filtration membrane 10 arranged fore filter 7, played the effect of protection UF film.Fore filter 7 has water inlet pipe (not shown) and rising pipe (not shown), water inlet pipe is provided with control valve (not shown), the import and export of inlet tube and outlet tube is provided with tensimeter (not shown), for judging the time of fore filter 7 filter element replacing according to pressure reduction, to meet the requirement of fast replacing filter core.The filter element filtering precision of fore filter 7 is 5 μm.
The SS filtering water outlet through pre-processing device can be reduced to < 5mg/L, most Large stone colloidal solids also can be removed, but to being less than the particulate still part existence of below 0.1um, this is still a pollution to the operation of reverse osmosis membrane (RO film) 11.Therefore, be necessary to carry out pre-filtering to before RO film.Ultra-filtration membrane 10, is connected with pre-processing device, is less than the suspended particle of 0.1 μm for particle diameter in filtered wastewater.In the present embodiment, ultra-filtration membrane 10 adopts hollow fiber ultrafiltration membrane, and the filtration particle diameter of hollow fiber ultrafiltration membrane is 0.01um to 0.2um, and the delivery turbidity in principle through tubular fibre membrane ultrafiltration is 0, and the bacterium simultaneously in trap water, prevents the bacterial contamination of rear class RO film.And the rate of recovery of system is high, can more than 90% be reached.Therefore tubular fibre membrane ultrafiltration is to RO film, is a good pre-treatment.And ultrafiltration membrance filter mode of the present invention adopts cross flow filter pattern, to process the higher water quality of suspension content; Hyperfiltration membrane assembly each unit Inlet and outlet water house steward arranges valve (not shown), to be connected with scavenging solution inlet/outlet pipe when cleaning; The requirement of ultra-filtration membrane delivery turbidity < 0.2NTU, SDI (SiltingDensityIndex, reverse osmosis membrane pollution index are called for short SDI) < 3.
Backwashing equipment (not shown), for regularly carrying out back flushing to ultra-filtration membrane.The richness such as the suspended substance that ultra-filtration membrane retains, colloid, bacterium and larger molecular organics amasss the surface at film, the normal filtration of the existence meeting influential system of these dirts, for guaranteeing the steady running of system, reach the good ability removing dirt, the present invention is equipped with backwashing equipment and regularly carries out back flushing to ultra-filtration equipment.Back flushing water source is that water is produced in ultrafiltration.
Preferably; the embodiment of the present invention arranged the RO cartridge filter 9 of about 5 μm before the water crossed by ultrafiltration membrane treatment enters reverse osmosis (RO) film; this is in order to prevent pipeline and intermediate water tank from bringing into blocking that pollutent causes reverse osmosis system, protection reverse osmosis membrane.The structure of RO cartridge filter 9 and performance perameter identical with fore filter 7, see the introduction of above-mentioned preposition peace strainer 7 structure, just can repeat no more here.
Reverse osmosis membrane 11, is connected with ultra-filtration membrane 10, for carrying out the further process of film desalination to the water outlet of ultra-filtration membrane 10, to reach the requirement of high-quality water.In the present embodiment, reverse osmosis membrane 11 adopts equipment with high desalinization pollution-resistant membrane membrane element or adopts low pressure compound pollution-resistant membrane, and reverse osmosis membrane is 4 inches of films or 8 inches.The material of pressure vessel for reverse osmosis is glass reinforced plastic, and pressure rating meets the design requirements of reverse osmosis and design pressure is not less than 450psi.Reverse osmosis membrane assembly connects according to the mode of one-level two sections, parallel connection in section, intersegmental series connection, the reverse osmosis membrane system rate of recovery >=50%.
Reverse osmosis membrane connects many water pipe (not shown), as water inlet pipe, fresh water water shoot and concentrated water drainage water pipe etc.Each water pipe of reverse osmosis membrane is provided with interface (not shown) and valve (not shown), to be connected with scavenging solution inlet/outlet pipe when cleaning.Concentrated water drainage water pipe fills flowrate control valve (as flow stabilizing valve, figure does not show), to control the rate of recovery of water.Fresh water water shoot and concentrated water drainage water pipe arrange multiple sampling spot (not shown), and the quantity of sampling spot and position are effectively diagnosed meeting and determine that the requirement of reverse osmosis system is arranged.Reverse osmosis membrane is also provided with start stop apparatus (not shown), can time delay auto-flushing after stopping using.
Middle tank 3,4 is also set between activated charcoal filter 2 and fore filter 7, between ultra-filtration membrane 10 and RO cartridge filter 9, for continuing to supply water for system stability.
The present invention also comprises chemical cleaning system, medicine system (not shown), CIP tank 5, pure water groove 6 and ultrafiltration backwash filter 8, chemical cleaning system is connected with ultra-filtration membrane 10, backwashing equipment, reverse osmosis membrane 11, for cleaning them, cleaning frequency, depending on membrane element pollution level, is generally more than 3 months.Medicine system supply reverse osmosis adds medicinal, and the dosing kind of reverse osmosis equipment and the selection of chemical feeding points are determined according to the characteristic of the influent quality of ultra-filtration membrane and selected reverse osmosis membrane assembly.Medicament storage tank selects anticorrosive material to make, and as adopted polypropylene (PP), the pipeline of medicine system, valve can adopt rigid polyvinyl chloride (UPVC).CIP tank 5 be ultra-filtration membrane 10 and reverse osmosis membrane 11 matting time splendid attire chemical cleaning solution trough.Pure water groove 6 is troughs of splendid attire reverse osmosis produced water.Filth is had to enter the strainer of the guarantee ultrafiltration safety arranged in ultra-filtration membrane 10 in pipeline and tank in order to prevent when ultrafiltration backwash filter 8 is ultrafiltration back flushinges.
The present invention's entirety controls (housing 12) Systematical control by PLC, realizes the modularization of whole device, integrated and automatization.
Present device possesses following advantage:
1, there is certain handiness and regulate leeway, to adapt to the change of water quality and quantity, stable equipment operation is reliable, efficiency is high, convenient management, easy to maintenance, reasonably, fully consider operation automation, reduce operation labour intensity.
2, in overall system design, introduce modular concept, main body treatment facility is divided into the processing unit of several paired running, can run according to the flexible in size of the practical situation of producing and actual amount of water, save working cost.
3, compact equipment, floor space is little, is easy for installation and maintenance, and saves the area.
Technology contents of the present invention and technical characteristic have disclosed as above; but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from spirit of the present invention based on teaching of the present invention and announcement; therefore; scope should be not limited to the content that embodiment discloses; and various do not deviate from replacement of the present invention and modification should be comprised, and contained by present patent application claim.
Claims (10)
1. a trade effluent Treated sewage reusing device for integrated automation, is characterized in that, comprising:
Pre-processing device, for the suspended particle in filtered wastewater and chlorine residue;
Ultra-filtration membrane, is connected with described pre-processing device, for particle diameter at least filtered wastewater be less than 0.1 μm particle suspension thing, colloid, bacterium;
Backwashing equipment, for regularly carrying out back flushing to described ultra-filtration membrane;
Reverse osmosis membrane, is connected with described ultra-filtration membrane, for carrying out film desalination to the water outlet of ultra-filtration membrane.
2. trade effluent Treated sewage reusing device according to claim 1, it is characterized in that, the fore filter that described pre-processing device comprises sand filter, the activated charcoal filter be connected with sand filter and is connected with activated charcoal filter, described sand filter and fore filter are used for the suspended particle in filtered wastewater, and described activated charcoal filter is for the organism in filtered wastewater and chlorine residue.
3. trade effluent Treated sewage reusing device according to claim 2, it is characterized in that, the quartz sand filtration medium of two kinds of different-grain diameters is comprised in described sand filter, described quartz sand filtration medium particle diameter in sand filter increases from top to bottom, the particle diameter that described sand filter top is filled is 0.4 ~ 2mm, and under-filled particle diameter is 2 ~ 6mm.
4. trade effluent Treated sewage reusing device according to claim 2, is characterized in that, also comprise the cartridge filter be connected with reverse osmosis membrane, for retaining the suspended particle in ultra-filtration membrane water outlet further.
5. trade effluent Treated sewage reusing device according to claim 4, it is characterized in that, described fore filter and cartridge filter include water inlet pipe and rising pipe, and described water inlet pipe is provided with control valve, and the import and export of described water inlet pipe and water outlet pipe is provided with tensimeter.
6. trade effluent Treated sewage reusing device according to claim 4, is characterized in that, also arrange middle tank between described activated charcoal filter and fore filter, between described ultra-filtration membrane and cartridge filter.
7. trade effluent Treated sewage reusing device according to claim 1, is characterized in that, described ultra-filtration membrane is hollow fiber ultrafiltration membrane, and its material is polyvinylidene difluoride (PVDF).
8. the Treated sewage reusing device of trade effluent according to claim 1, it is characterized in that, the putamina of described reverse osmosis membrane is glass fiber reinforced plastic membrane, the pressure that bears of described glass fiber reinforced plastic membrane is not less than 450psi, described reverse osmosis membrane assembly connects according to the mode of one-level two sections, parallel connection in section, intersegmental series connection.
9. the Treated sewage reusing device of trade effluent according to claim 1, it is characterized in that, described reverse osmosis membrane comprises water inlet pipe, fresh water water shoot and concentrated water drainage water pipe, described concentrated water drainage water pipe is equipped with flowrate control valve, and described fresh water water shoot and concentrated water drainage water pipe arrange multiple sampling spot.
10. the Treated sewage reusing device of trade effluent according to claim 1, is characterized in that, also comprises chemical cleaning system and medicine system, and described chemical cleaning system is at least connected with ultra-filtration membrane, reverse osmosis membrane, and described medicine system is for reverse osmosis membrane dosing.
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| CN109637687A (en) * | 2018-12-27 | 2019-04-16 | 中核四0四有限公司 | A kind of processing unit for uranium conversion fluoride waste |
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