CN106830480A - Etch the processing system and method for high-concentration waste liquid recycling - Google Patents

Etch the processing system and method for high-concentration waste liquid recycling Download PDF

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Publication number
CN106830480A
CN106830480A CN201710057620.2A CN201710057620A CN106830480A CN 106830480 A CN106830480 A CN 106830480A CN 201710057620 A CN201710057620 A CN 201710057620A CN 106830480 A CN106830480 A CN 106830480A
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tank
water
iii
processing system
reactive tank
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CN106830480B (en
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冯合生
冯韦纶
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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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/08—Compounds containing halogen
    • C01B33/10—Compounds containing silicon, fluorine, and other elements
    • C01B33/103—Fluosilicic acid; Salts thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D9/00—Nitrates of sodium, potassium or alkali metals in general
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/20—Halides
    • C01F11/22—Fluorides
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/007—Modular design
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Agronomy & Crop Science (AREA)
  • Materials Engineering (AREA)
  • Geology (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

The invention discloses the processing system and method for etching high-concentration waste liquid recycling, including four stage processing systems, the four stages processing system includes the first stage processing system, second stage processing system, phase III processing system and the fourth stage processing system that are sequentially connected by pump, processing method includes first stage sodium metasilicate, second stage calcirm-fluoride, phase III sodium nitrate and fourth stage recuperation of heat, the present invention is reasonable in design, can realize that the fluorine ion in waste liquid and the thorough resource of nitrate ion are reclaimed, existing environment zero is born.

Description

Etch the processing system and method for high-concentration waste liquid recycling
Technical field
The present invention relates to industrial wastes process field, more particularly to the processing system for etching high-concentration waste liquid recycling And method.
Background technology
Light electric industry (glass surface version etch process), glass work (glass etching processing procedure), wafer semiconductor industry (titanium dioxide Silicon crystal unit etch process) and photovoltaic (solar energy face version is manufactured) industry etc., in the country, because its industrial technology is used with hydrofluoric acid (10~20%) and nitric acid (5~15%) nitration mixture is the Main Ingredients and Appearance of etching solution, is using hydrofluoric acid erodable silica Characteristic；But because hydrofluoric acid can become calcirm-fluoride (CaF with calcium reaction in bone in human tissue structure2, it is commonly called as fluorite), due to it Fairly small (the calcirm-fluoride KSP=1.7X10 of reaction KSP-Ⅰ0), therefore high concentration of hydrofluoric acid is the risk for having amputation after human contact, therefore In high technology industrial parks prevalence a word language, " water breakthrough is not water ", what it was talked is exactly hydrofluoric acid solution.And in etching waste water row Its fluorinion concentration is still very high when putting, and etching solution adds the nitric acid of high concentration in order to keep its acidity, often, and in Suitable danger and difficulty is increased during treatment, and environmental protection specification in the whole world has control concentration (total nitrate ion discharge The control of nitrogen).
In presently used common process, system treatment is not carried out to the etching waste liquid produced in process, but Directly transported as discarded object, so need constantly to change etching liquid, also have the manufacturer for processing this class waste water in addition, with Simple acid-base neutralization and dosing coagulating sedimentation are processed, due to being processed in waste water mode, when sludge is formed and precipitated, and calcirm-fluoride Molecule it is quite trickle, in wherein add coagulant (PAC) and macromolecule flocculation aid (Polymer) it is rapid to increase molecule particles Precipitation, calcirm-fluoride is processed with sludge direction, increased social cost and the wasting of resources, and the product for so processing has It is various, include including silica (SiO2), calcirm-fluoride (CaF2), sodium fluoride (NaF) and sodium hexafluorisilicate (Na2SiF6), mix Close variousization of product, it is meant that product purity is not high and reclaim the feasibility that uses and be worth less considerable, and be only capable of when danger Discarded object is done harm to process, and fluorine ion is resource rather than discarded object in fluorine industry, is processed as direction then to put the cart before the horse, and is wasted Resource, and secondary pollution is caused to environment.
The content of the invention
To overcome disadvantages mentioned above, it is an object of the invention to provide one kind by fluorine ion and the thorough resource of nitrate ion Change, form the compound of high-purity, return to market and use and profit again is reclaimed to the etching high-concentration waste liquid that existing environment zero is born Processing system and method.
The purpose of the present invention can be achieved through the following technical solutions：Etch the processing system of high-concentration waste liquid recycling System, including four stage processing systems, first stage processing system that the four stages processing system includes being sequentially connected by pump, Second stage processing system, phase III processing system and fourth stage processing system；
The first stage processing system includes the existing pond, adjustment tank-I, reactive tank-I, the product that are sequentially connected by pump Dewaterer-I, collecting tank-I, neutralization chamber-I, neutralization chamber-II and collecting tank-II, the collecting tank-I connect with the reactive tank-I Connect, the product dewatering machine-I is associated with drying machine, the reactive tank-I is connected with NaOH drug slots, the NaOH drug slots and dosing Machine is connected, and the NaOH drug slots are connected with NaOH bubble explosive barrels by chemicals feeder, and the adjustment tank-I is in parallel with adjustment tank-II, institute State collecting tank-I in parallel with collecting tank-II, the reactive tank-I is connected with the collecting tank-II by product dewatering machine-II, institute State between adjustment tank-I and the reactive tank-I, acid and alkali-proof pump is provided between the adjustment tank-I and the reactive tank-II, it is described Between reactive tank-I and the product dewatering machine-I, between the reactive tank-I and the product dewatering machine-II, the collection Between groove-I and the neutralization chamber-I, acid and alkali-resistance pneumatic diaphragm pump is provided between the collecting tank-II and the neutralization chamber-I；
The second stage processing system includes the adjustment tank-III, reactive tank-II, the product dehydrate that are sequentially connected by pump Machine-III and collecting tank-IV, the product dewatering machine-III are associated with the drying machine, and the collecting tank-IV and the adjustment tank- III connection, the reactive tank-II is in parallel with reactive tank-III, and the pump is acid and alkali-resistance pneumatic diaphragm pump；
The phase III processing system includes the adjustment tank-IV, MVR equipment, cooling groove, crystallization tank, the product that are sequentially connected Pint water dispenser-IV and collecting tank-V, the collecting tank-V is connected with the adjustment tank-III, the collecting tank-IV and institute State crystallization tank connection, the product dewatering machine-IV associate with the drying machine, it is described lower the temperature between groove and the crystallization tank, institute State between crystallization tank and the product dewatering machine-IV, between the collecting tank-V and the crystallization tank and the adjustment tank-III It is provided with acid and alkali-resistance pneumatic diaphragm pump.
The fourth stage processing system includes MVR equipment, circulating slot-I, circulating slot-II and releasing chute, and the MVR sets Standby connection circulating slot-I, circulating slot-II and releasing chute, the MVR equipment forms inner loop with the circulating slot-I, described MVR equipment forms inner loop with the circulating slot-II, and the circulating slot-I and circulating slot-II pass through acid and alkali-resistance pneumatic diaphragm Pump is connected with hot water reclamation set, and the releasing chute is connected with reclamation set and pure water by acid and alkali-resistance pneumatic diaphragm pump with cistern Connect, the MVR equipment is connected with the adjustment tank-I and adjustment tank-II, the reclamation set is connected with NaOH bubble explosive barrels, Between the releasing chute and the pure water cistern, between the circulating slot-I and the hot water reclamation set, the circulation Be provided with acid and alkali-resistance pneumatic diaphragm pump between groove-II and the hot water reclamation set, the circulating slot-I and the MVR equipment it Between, between the circulating slot-II and the MVR equipment be provided with water pump.
The acid and alkali-resistance pneumatic diaphragm pump is connected by five mouthfuls of two valves with air compressor machine.
Further, the MVR equipment and the circulating slot-I, the MVR equipment and the circulating slot-II, described put Chute and the pure water cistern, stainless steel motor-driven valve, the collection are provided between the releasing chute and the reclamation set Between groove-I and the reactive tank-I and the neutralization chamber-I, the collecting tank-II and the reactive tank-I and the neutralization chamber- Between I, between the adjustment tank-III and the reactive tank-II and reactive tank-III, the reactive tank-II and reactive tank-III with Between the product dewatering machine-III, between the collecting tank-IV and the adjustment tank-IV and the adjustment tank-III, it is described NaOH steeps between explosive barrel and the NaOH drug slots, is provided between the collecting tank-V and the crystallization tank and the adjustment tank-III PVC acid and alkali-resistance motor-driven valves.
Further, the adjustment tank-I, adjustment tank-II, reactive tank-I, adjustment tank-III, reactive tank-II, reactive tank- IIIth, adjustment tank-IV, cooling groove, crystallization tank and NaOH bubble explosive barrels are connected with air blower by gas piping valve respectively.
Further, the air blower includes air blower-I and air blower-II, and the air blower-I and air blower-II are handed over Temporary substitute is made.
Further, the NaOH drug slots include NaOH drug slots-I, NaOH drug slots-II, NaOH drug slots-III and NaOH medicines Groove-IV, the NaOH drug slots-I are connected with the neutralization chamber-I and neutralization chamber-II, the NaOH drug slots-II, NaOH drug slots-III It is connected with the reactive tank-I with NaOH drug slots-IV.
Further, the NaOH steeps explosive barrel, adjustment tank-I, reactive tank-I, cooling groove, crystallization tank, circulating slot-I and follows Temperature monitoring is provided with annular groove-II.
Further, the existing pond, adjustment tank-I, reactive tank-I, collecting tank-I, collecting tank-II, collecting tank-III, tune Whole groove-III, reactive tank-II, reactive tank-III, collecting tank-IV, adjustment tank-IV, cooling groove, crystallization tank, collecting tank-V, circulation Water-level gauge is respectively equipped with groove-I, circulating slot-II and releasing chute.
Further, the drying machine is double-cone dryer, can accelerate the rate of drying of material, improves drying efficiency, Reach uniform dry purpose.
Further, it is provided with water flow monitor between the adjustment tank-I and the reactive tank-I.
Further, mixer and PH meters are provided with the neutralization chamber-I and neutralization chamber-II.
Further, the product dewatering machine-I, the product dewatering machine-II, the product dewatering machine-III and the product Pint water dispenser-IV is provided with oil-immersed type pressure gauge and citation formula pressure gauge, and the oil-immersed type pressure gauge can be estimated by operating personnel Pressure value, the pressure signal measured by the citation formula pressure gauge is sent to PLC as the foundation for automatically controlling.
The processing method of high-concentration waste liquid recycling is etched, H is mainly included in the waste liquid2SiF6And HNO3, it is described Processing method comprises the following steps：
(1) first stage-sodium hexafluorisilicate：Generation hexafluorosilicic acid has been reacted in etching waste discharge institute's fluoride ion more Form, with acid and alkali-resistance pneumatic diaphragm dosing pump mode, control liquid caustic soda chemical feeding quantity is added in reactive tank-I, is reacted to hexafluorosilicic acid Sodium (Na2SiF6), while dosing, the start-stop of dosing pump is monitored with temperature sense, the thick bubble that aeration is provided with reactive tank dissipates Gas disk, full and uniform stirring, now, and plate and frame dewaterer work pump startup filter, the sodium hexafluorisilicate dehydration that will be precipitated, It is dehydrated the product for completing and is packaged into finished product into drier；
(2) second stage-calcirm-fluoride：The filtering of first stage is completed during waste water pumps into reactive tank-I and reactive tank-II, Add calcium hydroxide (Ca (OH)2) further remove Natural zeolite, generation calcirm-fluoride (CaF2) precipitation, when in any of which reactive tank Calcirm-fluoride reaction complete, the electrically operated valve at reactive tank bottom is opened, and now dewaterer working barrel is opened, and is filtered, and has been dehydrated Calcirm-fluoride (CaF after2) it is to carry out drying and packaging；
(3) phase III and fourth stage-sodium nitrate (NaNO3)：The filtering of second stage is completed into waste water and imports MVR In (mechanical steam recompression technology) equipment, the MVR equipment has two to enter, four go out：
Two enter, respectively " influent stream waste water " and " vapour compression machine cooling circulating water becomes a mandarin "；
Four go out, respectively " distillation water outlet ", " vapour compression machine cooling circulating water go out stream ", " high concentration concentration waste water " and " Low Temperature Steam in system "；
Wherein, after influent stream waste water enters MVR equipment through working barrel, 90 DEG C -95 DEG C are first heated to, MVR is introduced with circulating pump Equipment top, after circulating steam under pressure with vapour compression machine, makes to be steam heated to 115 DEG C -118 DEG C, the drop in the MVR equipment Film steaming device bottom discharge distillation water outlet, the MVR device bottoms drainpipe discharges a certain amount of high concentration concentration waste water, the distillation Water outlet exclude MVR equipment before, first import MVR equipment in gas-liquid separation bucket, now, Low Temperature Steam discharge, " vapour compression machine Cooling circulating water go out stream " discharge after be divided into circulating slot-I and circulating slot-II, with work pump mode backflow import vapour compression machine with Its operation temperature is reduced, is distinguished supplied to factory's shower water, the circulating slot-I and circulating slot-II after being back to uniform temperature One after the other works, and distillation water outlet discharges MVR equipment with working barrel, if factory hot water demand amount is more than supply, uses running water Moisturizing is added, and distillation water outlet is with working barrel discharge MVR equipment to releasing chute；
High concentration concentration waste water is imported in cooling groove, when less than design temperature, crystallization tank is pumped into and is prepared filtering nitric acid Sodium is crystallized, and now carries out filtering means dehydration with two position control working barrel in crystallization tank, is carried out by drying machine after the completion of dehydration Drying, it is dried to obtain sodium nitrate (NaNO3) product, filter and complete the adjustment tank-III that water is returned to before calcirm-fluoride reaction.
Brief description of the drawings
Fig. 1 is the structured flowchart of the embodiment of the present invention.
In figure：
Specific embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Referring to shown in accompanying drawing 1, the processing system of the etching high-concentration waste liquid recycling in the present embodiment, including：
First, first stage-sodium hexafluorisilicate
1. before system boot
Circulating slot-I (T17) and circulating slot-II (T18) are filled to high water level with running water, then releasing chute (T19) is anti- Explosive barrel " D01 " is filled to again until explosive barrel " D02 ", explosive barrel " D03 ", " D04 " and " D05 " bubble medicine are completed.
2. medicine is steeped
Open pipeline valve " V20 ", shutoff valve " V21 ", pump " P19 " under " ON " state by releasing chute (T19) interior recycle-water (REC WATER) (it is anhydrous in releasing chute when system is operated for the first time, replace being come into operation to MVR with running water, it is delivered to medicine In bucket " D01 ", pump " P19 " " OFF " when high water level；Now, quantification tablet alkali is put into explosive barrel " D01 " manually； Now, temperature within the barrel monitoring meter " TE07 " schedules 60 DEG C (can be adjusted with man-machine design), and during more than design temperature, system high temperature is moved Report is acted, and stops dispensing, when temperature drop to 40 DEG C (can be adjusted with man-machine design), offers medicine (fixed to quantitative completion again Amount refers to that addition water is 1800KG, and piece alkali is 1800KG, is brewed to 50%, proportion 1.52NaOH solution).
The NaOH solution that will be soaked injects explosive barrel " D02 ", " D03 ", " D04 " and " D05 " paramount liquid with chemicals feeder " C01 " Position, now, while injection, is separately turned on pipeline valve " V22 ", " V23 ", " V24 " and " V25 "；Injection is completed, pipe valve It is " OFF " state.
Bubble medicine adjusts system blower " A02 " or " A03 " simultaneously, and (two spare unit each other, are used alternatingly.) explosive barrel top gas Body pipeline valve " AV10 " is opened, and bubble medicine completes manual-lock.
If explosive barrel " D01 " is when low liquid level, issue " explosive barrel low liquid level moves report ", to notify that operating personnel carry out steeping medicine work Make, when operating personnel carry out bubble medicine, can in a manual manner close shifting report switch.
3. intake
Existing pond " T00 " interior waste water is imported into the system adjustment tank-I " T01 " and adjustment tank-II with intake pump " P00 " In " T02 ", now, if temperature monitoring " TE01 " is set in adjustment tank-I " T01 " less than 10 DEG C, valve " V13 " is opened, low-temperature steam Import, when temperature monitoring " TE01 " is higher than 15 DEG C, valve " V13 " is closed, low-temperature steam stops importing.
Now, adjustment tank-I " T01 " interior water-level gauge " LE01 " monitors high water level, reactive tank-I " T03 " interior water-level gauge " LE02 " monitors low water level, and (two alternate-runnings, failure of pump escape starts to another for acid and alkali-proof pump " P01 " or " P02 " Move report.) start and inject in reactive tank-I " T03 " when liquid level gauge " LE02 " high water level is reached waste water, pump stopping action is (resistance to Water quantity monitoring meter " FM1 " is flow monitoring device afterwards for acid and alkali pumps " P01 " and " P02 ").
While water inlet, system blower is opened and gas piping valve " AV01 " and " AV02 " unlatching, waste water is filled part and is stirred Mixing is mixed, when pump stopping is acted, pipeline valve " AV01 " and " AV02 " are closed.
4. dosing and stirring
When acid and alkali-proof pump " P01 " or " P02 " stopping are acted (reactive tank-I (" T03 ") has reached high water level), system PLC prisons At least two liquid levels are located at Gao Shui in control explosive barrel " D03 ", " D04 " and " D05 " liquid level " LE19 ", " LE20 " and " LE21 " three liquid level Position state, now into dosing stirring.
If being located at high water level state in " LE19 ", " LE20 " and " LE21 " three liquid level entirely, start chemicals feeder " C04 ", operation Drug slot " D03 ", operation liquid level " LE19 ", drug slot " D03 " interior liquid caustic soda is beaten during to low liquid level by high level, is replaced by startup chemicals feeder " C05 ", operation drug slot " D04 ", operation liquid level " LE20 "；Any explosive barrel is beaten during to low liquid level by chemicals feeder, PLC issue " explosive barrels Low liquid level moves report ", worked with notifying that operating personnel carry out bubble medicine.
If only two explosive barrels are in high level, operation correspondence chemicals feeder, now issue " explosive barrel low liquid level moves report ", to notify behaviour Bubble medicine work is carried out as personnel.
If only an explosive barrel is when high level, stop dosing, now issue " explosive barrel low liquid level moves report " notifies operating personnel Carry out bubble medicine work.
Explosive barrel " D02 " liquid level gauge " LE18 " when low water level, now issue " explosive barrel low liquid level moves report " notifies operating personnel Liquid caustic soda is injected in explosive barrel " D02 " by explosive barrel " D01 " interior medicine with chemicals feeder " C01 " manual mode in a manual manner, is now managed Road valve " V22 " is opened, and injection is completed, and chemicals feeder " C01 " and pipeline valve " V23 " are closed.
Monitoring temperature in reactive tank is carried out while dosing, if being more than 50 DEG C (can be adjusted with man-machine design), stops adding Medicine, dosing is continued if being cooled to below 40 DEG C.
If explosive barrel " D01 " is when low liquid level, issue " explosive barrel low liquid level moves report ", to notify that operating personnel carry out steeping medicine work Make, when operating personnel carry out bubble medicine, can in a manual manner close shifting report switch.
While dosing, system blower operating, valve " AV03 " is opened.
5. filter
This stage filtering product dewaterer has two product dewatering machines-I " K01 " and product dewatering machine-II " K02 ", correspondence Acid and alkali-resistance membrane pump is " P03 " and " P04 ", and correspondence filtered water collection groove is " T04 " and " T05 ", and the liquid level in corresponding groove is calculated as " LE03 " and " LE04 " (being digital level meter), it is " P05 " and " P06 ", correspondence filtering that correspondence filtering completes water delivery pump Water return valve is " V01 " and " V03 ", and correspondence filtering completes water and carries out diaphragm valve for " V02 " and " V04 ".
Reactive tank-I (T03) continues aeration agitation when chemicals feeder stops dosing in reactive tank, the time is located at 30 minutes (can be adjusted in man-machine setting), after the completion of, system is filtered, and lasting aeration to filtration is completed in filtering time slot, filtering Operating pressure is set in 6KG/CM2.(in aeration time-histories, gas piping valve " AV03 " is opened.)
Product dewatering machine may be selected " manual ", " automatic " and " stopping ", when " manual ", if 6KG/CM2And filtering completes water not Water outlet again continues more than 5 minutes, and representative products dewaterer filtering time-histories has been completed, and now filtrate has been expired, and stops acid and alkali-resistance pneumatic Membrane pump, product dewatering machine conveyer action, oil hydraulic cylinder release of pressure opens sheet frame, and product material is unloaded automatically, defeated by product dewatering machine Machine is sent to be transported to hopper (being transported to drying machine manually to dry), oil hydraulic cylinder send pressure, and sheet frame plywood, acid and alkali-resistance pneumatic diaphragm pump is moved Make, continue to filter；During dewaterer " automatic ", " PP01 " (or " PP02 ") gauge pressure is continued above 6KG/CM2(can be adjusted with man-machine setting It is whole) more than, the interior liquid level gauge of corresponding collecting tank-I (T04) " LE03 " or collecting tank-II " T05 " interior liquid level gauge " LE04 ", every 10 Minute (can be by man-machine setting) liquid level difference is no more than 1 centimeter, and plate and frame dewaterer is automatically performed above-mentioned " manual " program；Product takes off When water dispenser is set in " stopping ", maintenance shut-downs.
When filtration system carries out " automatic ", start acid and alkali-resistance pneumatic diaphragm pump " P03 ", filtering completes water and enters collecting tank-I " T04 ", liquid level gauge " LE03 " controls acid and alkali-resistance pneumatic diaphragm pump " P05 " " skyer ", water level when 50 centimeters of height of water level in groove Highly 10 centimeters " low to stop ", now when acid and alkali-resistance pneumatic diaphragm pump " P03 " is just started pipeline valve " V01 " open 5 minutes (can be by Man-machine setting adjustment), pipeline valve " V02 " is closed, and filtering completes water and is back in reactive tank-I " T03 ", after the completion of 5 minutes, mistake Filter completes to carry out neutralization reaction, (reactive tank-I " T03 " interior liquid level gauge when filtering is completed in water importing neutralization chamber-I " T06 " " LE02 " is located at low water level), now, acid and alkali-resistance pneumatic diaphragm pump " P03 " stops, and acid and alkali-resistance pneumatic diaphragm pump " P05 " is operated extremely Stop during collecting tank-I " T04 " low water level, pipeline valve " V01 " and " V02 " close (filter action completion).
When filtration system carries out " automatic ", if adjustment tank-I " T01 " interior liquid level gauge " LE01 " is located at high water level, except just In product dewatering machine-I " K01 " and relevant device is started, dynamic product dewatering machine-II " K02 " and relevant device are set up another, that is, started resistance to Soda acid pneumatic diaphragm pump " P04 ", filtering completes water and enters collecting tank-II " T05 ", and set liquid level gauge " LE04 " controls acidproof in groove Alkali pneumatic diaphragm pump " P06 " " skyer ", 10 centimeters of height of water level " low to stop ", now in acid and alkali-resistance gas when 50 centimeters of height of water level Pipeline valve " V03 " opens 5 minutes (can be adjusted by man-machine setting) when dynamic membrane pump " P04 " is just started, and pipeline valve " V04 " is closed, Filtering completes water and is back in reactive tank-I " T03 ", and after the completion of 5 minutes, filtering completion water is imported and carried out in neutralization chamber-I " T06 " Neutralization reaction.When filtering is completed (reactive tank-I " T03 " interior liquid level gauge " LE02 " be located at low water level), now, acid and alkali-resistance it is pneumatic every Membrane pump " P03 " and " P04 " stop, when acid and alkali-resistance pneumatic diaphragm pump " P05 " and " P06 " running are to collecting tank-II " T05 " low water level Stop, pipeline valve " V03 " and " V04 " close (filter action completion).
For ensure filtering complete water enter neutralization chamber-I " T06 " be clarified wastewater, acid and alkali-resistance pneumatic diaphragm pump " P03 " or " P04 " starts initial 5 minutes (can be adjusted by man-machine setting) and must be back to reactive tank-I " T03 ".
When filtration system is operated, system blower is persistently opened, and gas piping valve " AV03 " is opened, and instead, is closed, filtering When system carries out " manual ", each equipment and the manually opened test of pipeline valve.
6. neutralize
This stage neutralization reaction in two times, system equipment has included neutralization chamber-I " T06 ", groove auxiliary equipment mixer " M01 ", soda acid dosing controller and sensor " PH01 ", chemicals feeder " C02 ", neutralization chamber-I " T07 ", the stirring of groove auxiliary equipment Machine " M02 ", soda acid dosing controller and sensor " PH02 ", chemicals feeder " C03 ", collecting tank-III " T08 " and acid and alkali-resistance it is pneumatic every Membrane pump " P07 ".
Waste water via pipeline valve " V02 " and or " V04 " water conservancy diversion enter neutralization chamber-I " T06 ", i.e. pipeline valve " V02 " and or When " V04 " is opened, mixer " M01 " and " M02 " come into operation, now soda acid dosing controller and sensor " PH01 " detecting water (can be set in being adjusted on soda acid dosing controller) when groove " T06 " interior pH value is less than 5.5, start chemicals feeder " C02 " action dosing, Stop dosing higher than 5.5；Soda acid dosing controller and sensor " PH02 " detecting tank " T07 " interior pH value (can be in when being less than 6.5 Setting is adjusted on soda acid dosing controller), start chemicals feeder " C02 " action dosing, dosing is stopped higher than 6.5；This part waste water T07 to T08 is flowed through by T06 in an overflow manner, acid and alkali-resistance pneumatic diaphragm pump " P07 " is set in collecting tank-III " T08 ", extracted useless To adjustment tank-III " T09 ", it is controlled by liquid level gauge " LE05 ", and skyer is low to stop water.
2nd, second stage-calcirm-fluoride
1. water inlet, dosing and stirring
Hold on last stage, waste water is extracted to adjustment tank-III " T09 ", in groove automatically by acid and alkali-resistance pneumatic diaphragm pump " P07 " Start acid and alkali-proof pump " P08 " during interior liquid level gauge " LE06 " high water level, now, if in reactive tank-II " T10 " interior liquid level gauge " LE07 " It is low water level to monitor, and pipeline valve " V05 " is opened and pipeline valve " V06 ", " V07 " and " V08 " is closed, to liquid level gauge " LE07 " monitoring During for high water level (full water), acid and alkali-proof pump " P08 " stops, and pipeline valve " V05 " is closed.
Start acid and alkali-proof pump " P08 " when adjustment tank-III " T09 " interior liquid level gauge " LE06 " high water level, now, if in reaction Groove-II " T10 " interior liquid level gauge " LE07 " monitoring is high water level or acid and alkali-resistance pneumatic diaphragm pump " P09 " just in running, now, pipeline Valve " V06 " is opened and pipeline valve " V05 " is closed, and is monitored during for high water level (full water) to liquid level gauge " LE08 ", acid and alkali-proof pump " P08 " Stop, pipeline valve " V06 " is closed.
If adjustment tank-III " T09 " interior liquid level gauge " LE06 " superelevation liquid level, reactive tank-II " T10 " interior liquid level gauge " LE07 " is high Liquid level (or acid and alkali-resistance is pneumatic every in pump " P09 " operating), and, reactive tank-III " T11 " interior liquid level gauge " LE08 " high level (or it is resistance to Soda acid it is pneumatic every pump " P10 " operating in), now, acid and alkali-resistance it is pneumatic every pump " P03 " and or " P04 " shut down, system PLC hair Cloth " full water moves report ".
Reactive tank-II " T10 " and or during reactive tank-III " T11 " full water, react back PLC system and send that " full water dosing is moved Report ", and in " TT10 " and " TT11 " snap-type button is set in control panel, personnel to be operated add calcium hydroxide respectively manually Enter reactive tank-II " T10 " and or during reactive tank-III " T11 ", return to operating surface version and will give as security button button and press respectively, confirm artificial Dosing is completed, and completion notice PLC is acted.
When acid and alkali-proof pump " P08 " is acted, gas piping valve " AV04 " is opened, and system blower is opened.
When system is notified artificial dosing and completes, i.e. TT10 and or TT11 snap-type buttons when being separately or concurrently pressed.
Corresponding groove overhead gas pipeline valve " AV05 " and or " AV06 " in dispensing when open, system blower open, reaction Groove continues with Gas Stirring 30 minutes.
In water inlet, dosing and whipping process, pipeline valve " V07 " corresponding to two reactive tanks and " V08 " each self closing.
2. filter
This stage filtering product dewaterer has one " K03 ", corresponds to reactive tank-II " T10 " and reactive tank-III " T11 ", right Pipeline valve is answered for " V07 " and " V08 ", corresponding filtration pump is acid and alkali-resistance membrane pump " P09 " and " P10 ", correspondence filter water Groove is collecting tank-IV " T12 ", and liquid level is calculated as " LE09 " (digital level meter) in corresponding groove, and correspondence filtering completes water delivery pump It is " P11 " that correspondence filter water return valve is " V10 ", correspondence filtering completes water and carries out diaphragm valve for " V09 ".
Reactive tank-II " T10 " and or reactive tank-III " T11 " after the completion of artificial dosing, lasting aeration is stirred in reactive tank Mix, the time is located at 30 minutes (can be adjusted in man-machine interface), after the completion of, system is filtered, filtration pressure setting 6KG/ CM2.When reactive tank-II " T10 " is filtered, pipeline valve " V07 " is opened, acid and alkali-resistance pneumatic diaphragm pump " P09 " action；Reactive tank-III When " T11 " is filtered, pipeline valve " V08 " is opened, acid and alkali-resistance pneumatic diaphragm pump " P10 " action；Two reactive tanks can be filtered simultaneously Action.
Product dewatering machine may be selected " manual ", " automatic " and " stopping ", when " manual ", if 6KG/CM2And filtering completes water not Water outlet again continues more than 5 minutes, and representative products dewaterer filtering time-histories has been completed, and now filtrate has been expired, and stops acid and alkali-resistance pneumatic Membrane pump " P09 " and or " P10 ", product dewatering machine conveyer action, oil hydraulic cylinder release of pressure opens sheet frame, and product material unloads automatically, Hopper is transported to by product dewatering machine conveyer, oil hydraulic cylinder send pressure, sheet frame plywood, acid and alkali-resistance pneumatic diaphragm pump " P09 " and or " P10 " Action, continues to filter；During dewaterer " automatic ", " PP03 " gauge pressure is continued above 6KG/CM2More than, corresponding collecting tank-IV " T12 " interior liquid level gauge " LE09 ", every 10 minutes (can be by man-machine setting) liquid level difference is no more than 1 centimeter, and plate and frame dewaterer is automatic Complete above-mentioned " manual " program；During product dewatering machine setting " stopping ", maintenance shut-downs.
When filtration system carries out " automatic ", start acid and alkali-resistance pneumatic diaphragm pump " P09 " and or " P10 ", correspondence pipeline valve " V07 " and " V08 " is also opened for correspondence, and filtering completes water and enters collecting tank-IV " T12 ", set liquid level gauge " LE09 " control in groove Acid and alkali-resistance pneumatic diaphragm pump " P11 " processed when 50 centimeters of height of water level " skyer ", 10 centimeters of height of water level " low to stop ", now product When dewaterer has just completed discharging and acts, pipeline valve " V10 " unlatching 5 minutes (can be by when acid and alkali-resistance pneumatic diaphragm pump " P11 " is just started Man-machine setting is adjusted), pipeline valve " V09 " is closed, and filtering completes water and is back in adjustment tank-III " T09 ", after the completion of 5 minutes, filtering Complete water and import adjustment tank-IV " T13 ", (reactive tank-II " T10 " interior liquid level gauge " LE07 " is located at low water level when filtering is completed；And Or, reactive tank-III " T11 " interior liquid level gauge " LE08 " be located at low water level), now, correspondence acid and alkali-resistance pneumatic diaphragm pump " P09 " and or " P10 " stops, and stops during acid and alkali-resistance pneumatic diaphragm pump " P11 " running waste water to adjustment tank-IV " T13 " low water level, correspondence pipeline Valve " V07 " and or " V08 " closing；Pipeline valve " V09 " and or " V10 " close, filter action complete.
To ensure that filter completion water to enter adjustment tank-IV " T13 " is clarified wastewater, product dewatering machine is dynamic in just completion discharging When making, acid and alkali-resistance pneumatic diaphragm pump " P11 " starts initial 5 minutes (can be adjusted by man-machine setting) and must be back to adjustment tank-III “T09”。
Filtration system operate when, system blower is persistently opened, gas piping valve " AV05 " and or " AV06 " open, instead It, closes.
If adjustment tank-IV " T13 " liquid level gauge " LE10 " is in more than surcharge water level, acid and alkali-resistance pneumatic diaphragm pump " P09 " and " P10 " stopping is acted, and pipeline valve " V07 " and " V08 " are closed, PLC " full water moves report ".
When filtration system carries out " manual ", each equipment and the manually opened test of pipeline valve.
3rd, phase III-sodium nitrate
1. intake, lower the temperature and crystallize
When liquid level gauge " LE10 " high water level is set in adjustment tank-IV " T13 ", suction pump is set by waste water certainly in MVR rapid steamers Import in MVR, high concentration concentrates waste water in first heat exchange is carried out with heat-exchangers of the plate type with influent stream waste water in MVR equipment, improves Influent stream wastewater temperature, subsequently enters cooling groove " T14 ", and when MVR is acted, system blower is opened, gas piping valve " AV07 ", " AV08 " and " AV09 " is opened, and is set " TE03 " and " LE11 " in cooling groove " T14 ", and waste water (can be in man-machine less than 50 DEG C in temperature Operation adjustment), when liquid level gauge exceedes high water level, waste water is imported crystallization tank " T15 " by acid and alkali-resistance pneumatic diaphragm pump " P12 " automatically Interior, acid and alkali-resistance pneumatic diaphragm pump " P12 " is higher than 50 DEG C and or liquid level gauge " LE11 " low water level and or liquid level in water thermometer " TE03 " Shut down during meter " LE12 " high water level, when MVR and acid and alkali-resistance pneumatic diaphragm pump " P12 " stop, gas piping valve " AV08 " is closed Close.
When superelevation liquid level, system closes MVR, PLC " full water moves report " for cooling groove " T14 ".
When MVR " manual " or " automatic ", circulating pump-I " T17 " and or circulating pump-II " T18 " must an at least groove for height Water level, when " automatic ", circulation working barrel and related valves are automatically turned on, and form interior circulation current to reduce steaming contracting machine operation temperature Degree, if two grooves are low water level, PLC " water shortage moves report ".
Waste water enters crystallization tank " T15 " decrease temperature crystalline again, and in being set in groove " TE03 " and " LE11 ", wastewater temperature is less than 35 DEG C (can be adjusted in human-machine operation), when liquid level gauge exceedes high water level, automatic import waste water of acid and alkali-resistance pneumatic diaphragm pump " P13 " is produced Pint water dispenser " K04 ", acid and alkali-resistance pneumatic diaphragm pump " P12 " in water thermometer " TE04 " higher than 45 DEG C (can be adjusted in human-machine operation) and Or liquid level gauge " LE11 " shuts down when low water level.
When MVR and acid and alkali-resistance pneumatic diaphragm pump " P13 " stop, gas piping valve " AV09 " is closed.
2. filter
Filtering product dewaterer designed by this stage has one " K04 ", correspondence crystallization tank " T15 ", corresponding filtration Pump is acid and alkali-resistance membrane pump " P13 ", and correspondence filtering trough is collecting tank-V " T16 ", and liquid level is calculated as " LE13 " (number in corresponding groove Word formula liquid level gauge), it is " P14 " that correspondence filtering completes water delivery pump, and correspondence filter water return valve is " V11 ", and correspondence filtering is completed Water carries out diaphragm valve for " V12 ".
Crystallization tank " T15 " temperature is less than 35 DEG C, during high level, and acid and alkali-resistance pneumatic diaphragm pump " P13 " starts filtering, crystallization tank Interior to continue aeration agitation, acid and alkali-resistance pneumatic diaphragm pump " P12 " stopping action, system is filtered, and filtration pressure is set as 6KG/CM2。
Product dewatering machine may be selected " manual ", " automatic " and " stopping ", and when " manual ", filtering completes water no longer water outlet and continues 5 More than minute, the filtering of representative products dewaterer has been completed, and now filtrate has been expired, and stops acid and alkali-resistance pneumatic diaphragm pump " P13 ", product Dewaterer conveyer is acted, oil hydraulic cylinder release of pressure, opens sheet frame, and product material is unloaded automatically, and material is transported to by product dewatering machine conveyer Groove, oil hydraulic cylinder send pressure, and sheet frame plywood, acid and alkali-resistance pneumatic diaphragm pump " P13 " action continues to filter；During dewaterer " automatic ", " PP03 " gauge pressure is continued above 6KG/CM2More than, the interior liquid level gauge of corresponding collecting tank-V " T16 " " LE13 " every 10 minutes (can By man-machine setting) no more than 1 centimeter, plate and frame dewaterer is automatically performed above-mentioned " manual " program to liquid level difference；Product dewatering machine sets When fixed " stopping ", maintenance shut-downs.
When filtration system carries out " automatic ", start acid and alkali-resistance pneumatic diaphragm pump " P13 ", filtering complete water enter collecting tank- V " T16 ", set liquid level gauge " LE13 " controls acid and alkali-resistance pneumatic diaphragm pump " P14 " " high when 50 centimeters of height of water level in groove Beat ", 10 centimeters of height of water level " low to stop ", now in product dewatering machine when discharging action is just completed, acid and alkali-resistance pneumatic diaphragm pump Pipeline valve " V11 " opens 5 minutes (can be adjusted by man-machine setting) when " P14 " is just started, and pipeline valve " V12 " is closed, and filtering is completed Water is back in crystallization tank " T15 ", and after the completion of 5 minutes, pipeline valve " V11 " and " V12 " correspondence switch, and filtering completion water is imported to be adjusted Whole groove-III " T09 ", when filtering is completed (crystallization tank " T10 " interior liquid level gauge " LE12 " is located at low water level), now, correspondence acid and alkali-resistance Pneumatic diaphragm pump " P13 " stops, and stops during acid and alkali-resistance pneumatic diaphragm pump " P14 " running waste water to adjustment tank-III " T09 " low water level Only, correspondence pipeline valve " V11 " and " V12 " is closed, and filter action is completed.
When filter action continues, acid and alkali-resistance pneumatic diaphragm pump " P13 " continuous firing, if now adjustment tank-III " T09 " is super During high water level, acid and alkali-resistance pneumatic diaphragm pump " P13 " is stopped, PLC " full water moves report ".
To ensure that filter completion water to enter adjustment tank-III " T09 " is clarified wastewater, product dewatering machine is dynamic in just completion discharging When making, acid and alkali-resistance pneumatic diaphragm pump " P14 " starts initial 5 minutes (can be adjusted by man-machine setting) and must be back to crystallization tank “T15”。
When filtration system is operated, system blower is persistently opened, and gas piping valve " AV09 " is opened, conversely, closing.System When system MVR and acid and alkali-resistance pneumatic diaphragm pump " P13 " are started, gas piping valve " AV09 " is opened, conversely, closing.
When filtration system carries out " manual ", each equipment and the manually opened test of pipeline valve.
4th, fourth stage
MVR equipment two is entered and four go out altogether, as follows：
Two enter, respectively " influent stream waste water " and " Pistonless compressor cooling circulating water becomes a mandarin ".
Wherein, " Pistonless compressor recirculated water becomes a mandarin " is with running water (CITY WATER) moisturizing.
Four go out, and are hot systems, respectively " distillation water outlet ", " Pistonless compressor cooling circulating water go out stream ", " high concentration is dense Contracting waste water " and " low-temperature steam in system ".
1. low-temperature steam
Controlled to flow to by pipeline valve " V13 ", " V14 " and " V15 ", adjustment tank-I " T01 " waste water water temperature meter " LE01 " During less than 10 DEG C (can be adjusted by man-machine setting), " V13 " is opened；When instead, higher than 15 DEG C (can be adjusted by man-machine setting), close.
Circulating water chennel-I " T17 " and circulating water chennel-II " T18 " institute to water circulating pump " P15 " and " P17 ", wherein a cell body And during pump work, correspondence pipeline valve " V14 " or " V15 " is opened, another closing.(this is acceleration warming circulating tank interior circulation water Temperature, speed is reclaimed with profit.)
2. Pistonless compressor cooling circulating water goes out stream
Circulating water chennel-I " T17 " and water circulating pump " P15 " and " P17 " corresponding to circulating water chennel-II " T18 ", wherein a groove When body and pump work, correspondence pipeline valve " V16 " or " V17 " is opened, another closing；Form an interior circulation closed system.Corresponding groove Interior thermometer " TE05 " and " TE06 ", if temperature by man-machine setting more than 50 DEG C (can be adjusted), by correspondence acid and alkali-resistance pneumatic diaphragm Pump " P16 " and " P18 " by liquid level gauge in corresponding groove " LE14 " and " LE15 " control skyer and low stop in an automatic fashion；Two grooves and its System, blocked operation do action (as " P16 " acts draining, open by " P17 " catcher circulation temperature lowering work, correspondence pipeline valve " V16 " Open, form interior circulation.).
3. water outlet is distilled
Distillation water outlet is first carried out with heat-exchangers of the plate type (being located in MVR equipment) before MVR equipment is discharged with influent stream waste water Exchange (improve influent stream wastewater temperature, purpose is energy-conservation) and discharge MVR at once, be drained into releasing chute " T19 ", it is corresponding acidproof Alkali pneumatic diaphragm pump " P19 ", its corresponding liquid level gauge " LE15 ", skyer is low when " automatic " stops, pipeline valve " V22 ", into pure water Adjustment tank, during system bubble medicine, " manual " opening pipeline valve " V21 ".
5th, other
The system adjusts system blower totally two, " A02 " and " A03 " the using and the reserved, gas piping valve when " automatic " " AV01 ", " AV02 ", " AV03 ", " AV04 ", " AV05 ", " AV06 ", " AV07 ", " AV08 ", " AV09 " and " AV10 " wherein appoints When one valve is opened, air blower automatically turns on wherein one, and start and stop replace automatically.
Product dewatering machine amounts to four, product dewatering machine-I " K01 ", product dewatering machine-II " K02 ", product dewatering machine-III " K03 " and product dewatering machine-IV " K04 " correspondence filtration pump, acid and alkali-resistance pneumatic diaphragm pump " P03 ", " P04 ", " P09 ", " P10 " and " P13 ", when " automatic " starting, must first pass through drainage reflux, to ensure each work-in-process purity.
Embodiment of above only technology design and feature to illustrate the invention, purpose is in allowing person skilled in the art Understand present disclosure and be carried out, it is not intended to limit the scope of the present invention, it is all real according to spirit of the invention The equivalent change or modification that matter is done, should all be covered by protection scope of the present invention.

Claims (12)

1. the processing system of high-concentration waste liquid recycling is etched, it is characterised in that：Including four stage processing systems, described four Phase process system includes the first stage processing system being sequentially connected by pump, second stage processing system, at the phase III Reason system and fourth stage processing system；
The first stage processing system includes the existing pond, adjustment tank-I, reactive tank-I, the product dehydrate that are sequentially connected by pump Machine-I, collecting tank-I, neutralization chamber-I, neutralization chamber-II and collecting tank-II, the collecting tank-I are connected with the reactive tank-I, institute State product dewatering machine-I to be associated with drying machine, the reactive tank-I is connected with NaOH drug slots, the NaOH drug slots connect with chemicals feeder Connect, the NaOH drug slots are connected with NaOH bubble explosive barrels by chemicals feeder, and the adjustment tank-I is in parallel with adjustment tank-II, the receipts Collection groove-I is in parallel with collecting tank-II, and the reactive tank-I is connected with the collecting tank-II by product dewatering machine-II, the tune Acid and alkali-proof pump is provided between whole groove-I and the reactive tank-I, between the reactive tank-I and the product dewatering machine-I, described Between reactive tank-I and the product dewatering machine-II, between the collecting tank-I and the neutralization chamber-I, the collecting tank-II Acid and alkali-resistance pneumatic diaphragm pump is provided between the neutralization chamber-I；
The second stage processing system includes the adjustment tank-III, reactive tank-II, the product dewatering machine-III that are sequentially connected by pump With collecting tank-IV, the product dewatering machine-III associates with the drying machine, and the collecting tank-IV connects with the adjustment tank-III Connect, the reactive tank-II is in parallel with reactive tank-III, the pump is acid and alkali-resistance pneumatic diaphragm pump；
The phase III processing system includes that the adjustment tank-IV being sequentially connected, MVR equipment, cooling groove, crystallization tank, product take off Water dispenser-IV and collecting tank-V, the collecting tank-V are connected with the adjustment tank-III, the collecting tank-IV and the knot Brilliant groove connection, the product dewatering machine-IV associate with the drying machine, it is described lower the temperature between groove and the crystallization tank, the knot It is provided between brilliant groove and the product dewatering machine-IV, between the collecting tank-V and the crystallization tank and the adjustment tank-III Acid and alkali-resistance pneumatic diaphragm pump；
The fourth stage processing system includes MVR equipment, circulating slot-I, circulating slot-II and releasing chute, and the MVR equipment connects Circulating slot-I, circulating slot-II and releasing chute are connect, the MVR equipment forms inner loop with the circulating slot-I, and the MVR sets Standby to form inner loop with the circulating slot-II, the circulating slot-I and circulating slot-II are by acid and alkali-resistance pneumatic diaphragm pump and warm Water recycling device is connected, and the releasing chute is connected with reclamation set and pure water by acid and alkali-resistance pneumatic diaphragm pump with cistern, institute State MVR equipment to be connected with the adjustment tank-I and adjustment tank-II, the reclamation set is connected with NaOH bubble explosive barrels, described Between releasing chute and the pure water cistern, between the circulating slot-I and the hot water reclamation set, the circulating slot-II Acid and alkali-resistance pneumatic diaphragm pump is provided between the hot water reclamation set, between the circulating pump-I and the MVR equipment, described Water pump is provided between circulating slot-II and the MVR equipment；
The acid and alkali-resistance pneumatic diaphragm pump is connected by five mouthfuls of two valves with air compressor machine.
2. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described MVR equipment and the circulating slot-I, the MVR equipment and the circulating slot-II, the releasing chute and the pure water retaining It is provided with stainless steel motor-driven valve between pond, the releasing chute and the reclamation set, collecting tank-I and the reactive tank-I and described Between neutralization chamber-I, between the collecting tank-II and the reactive tank-I and the neutralization chamber-I, the adjustment tank-III and institute State between reactive tank-II and reactive tank-III, between the reactive tank-II and reactive tank-III and the product dewatering machine-III, institute State between collecting tank-IV and the adjustment tank-IV, between the collecting tank-IV and the adjustment tank-III, the NaOH bubble medicine It is acidproof PVC to be provided between bucket and the NaOH drug slots, between the collecting tank-V and the crystallization tank and the adjustment tank-III Alkali motor-driven valve.
3. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：The tune Whole groove-I, adjustment tank-II, reactive tank-I, adjustment tank-III, reactive tank-II, reactive tank-III, adjustment tank-IV, cooling groove, crystallization Groove and NaOH bubble explosive barrels are connected with air blower by gas piping valve respectively.
4. it is according to claim 3 etching high-concentration waste liquid recycling processing system, it is characterised in that：The drum Blower fan includes air blower-I and air blower-II, the air blower-I and the alternation of air blower-II.
5. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described NaOH drug slots include NaOH drug slots-I, NaOH drug slots-II, NaOH drug slots-III and NaOH drug slot-IV, the NaOH drug slots-I with The neutralization chamber-I and neutralization chamber-II are connected, and the NaOH drug slots-II, NaOH drug slots-III and NaOH drug slots-IV are anti-with described Answer the connection of groove-I.
6. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described Temperature monitoring is provided with NaOH bubbles explosive barrel, adjustment tank-I, reactive tank-I, cooling groove, crystallization tank, circulating slot-I and circulating slot-II Device.
7. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described existing There are pond, adjustment tank-I, reactive tank-I, collecting tank-I, collecting tank-II, collecting tank-III, adjustment tank-III, reactive tank-II, reaction Groove-III, collecting tank-IV, adjustment tank-IV, cooling groove, crystallization tank, collecting tank-V, circulating slot-I, circulating slot-II, releasing chute, Water-level gauge is respectively equipped with NaOH bubbles explosive barrel, NaOH drug slots-I, NaOH drug slots-II, NaOH drug slots-III and NaOH drug slots-IV.
8. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described dry Dry machine is double-cone dryer.
9. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：The tune Water flow monitor is provided between whole groove-I and the reactive tank-I.
10. it is according to claim 1 etching high-concentration waste liquid recycling processing system, it is characterised in that：It is described Mixer and PH meters are provided with neutralization chamber-I and neutralization chamber-II.
The processing system of 11. etching high-concentration waste liquid recyclings according to claim 1, it is characterised in that：It is described Product dewatering machine-I, the product dewatering machine-II, the product dewatering machine-III and the product dewatering machine-IV are provided with PVC Oil-immersed type pressure gauge and citation formula pressure gauge.
The method of 12. processing systems for implementing the etching high-concentration waste liquid recycling described in claim 1, its feature exists In being divided into following steps circular flow：
(1) first stage-sodium hexafluorisilicate：The shape of generation hexafluorosilicic acid has been reacted in etching waste discharge institute's fluoride ion more State, with acid and alkali-resistance pneumatic diaphragm dosing pump mode, control liquid caustic soda chemical feeding quantity is added in reactive tank-I, is reacted to sodium hexafluorisilicate (Na2SiF6), while dosing, the start-stop of dosing pump is monitored with temperature sense, the thick bubble that aeration is provided with reactive tank dissipates gas Disk, full and uniform stirring, now, and in a quantitative manner after the completion of dosing, dewaterer work pump startup filter, six for precipitating Prodan is dehydrated, and is dehydrated the product for completing and is packaged into finished product into drier；
(2) second stage-calcirm-fluoride：The filtering of first stage is completed during waste water pumps into reactive tank-I and reactive tank-II, to add Calcium hydroxide (Ca (OH)2) further remove Natural zeolite, generation calcirm-fluoride (CaF2) precipitation, the fluorine in any of which reactive tank Change calcium reaction to complete, the electrically operated valve at reactive tank bottom is opened, and now dewaterer working barrel is opened, and is filtered, after the completion of dehydration Calcirm-fluoride (CaF2) it is to carry out drying and packaging；
(3) phase III and fourth stage-sodium nitrate (NaNO3)：The filtering of second stage is completed into waste water and imports MVR (mechanically Steam recompression technology) in equipment, the MVR equipment has two to enter, four go out：
Two enter, respectively " influent stream waste water " and " vapour compression machine cooling circulating water becomes a mandarin "；
Four go out, respectively " distillation water outlet ", " vapour compression machine cooling circulating water goes out stream ", " high concentration concentration waste water " and " system Interior Low Temperature Steam "；
Wherein, after influent stream waste water enters MVR equipment through working barrel, 90 DEG C -95 DEG C are first heated to, MVR equipment is introduced with working barrel Top, makes to be steam heated to 115 DEG C -118 DEG C, the MVR device bottoms discharge distillation water outlet, the MVR device bottoms draining Pipe discharges a certain amount of high concentration concentration waste water, the distillation water outlet before MVR equipment is excluded, the gas-liquid for first importing in MVR equipment Separating barrel, now, Low Temperature Steam discharge is divided into circulating slot-I and circulation after " vapour compression machine cooling circulating water goes out stream " discharge Groove-II, to work, pump mode backflow imports vapour compression machine to reduce its operation temperature, and work is supplied to after being back to uniform temperature Factory's shower water, the circulating slot-I and the difference one after the other work of circulating slot-II, distillation water outlet are set with working barrel discharge MVR It is standby, if factory hot water demand amount is more than supply, added with running water moisturizing；
High concentration concentration waste water is imported into cooling groove and crystallization tank, when less than design temperature, the filtering of product dewatering machine-IV is pumped into Sodium nitrate is crystallized, and now filtering means dehydration is carried out with two position control working barrel in crystallization tank, by drying machine after the completion of dehydration Dried, it is dried to obtain sodium nitrate (NaNO3) product, filter and complete the adjustment that water is returned to before calcirm-fluoride reaction Groove-III.
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