CN106927600A - The integrated sewage treating apparatus of fluoride waste - Google Patents

The integrated sewage treating apparatus of fluoride waste Download PDF

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Publication number
CN106927600A
CN106927600A CN201710255568.1A CN201710255568A CN106927600A CN 106927600 A CN106927600 A CN 106927600A CN 201710255568 A CN201710255568 A CN 201710255568A CN 106927600 A CN106927600 A CN 106927600A
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CN
China
Prior art keywords
pond
treating apparatus
control module
central control
integrated sewage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710255568.1A
Other languages
Chinese (zh)
Inventor
戴捷
胡耀笛
刘松
易俊
吴先威
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Yangtze University
Original Assignee
Yangtze University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yangtze University filed Critical Yangtze University
Priority to CN201710255568.1A priority Critical patent/CN106927600A/en
Publication of CN106927600A publication Critical patent/CN106927600A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/12Halogens or halogen-containing compounds
    • C02F2101/14Fluorine or fluorine-containing compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00Controlling or monitoring parameters in water treatment
    • C02F2209/06Controlling or monitoring parameters in water treatment pH

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The present invention discloses a kind of integrated sewage treating apparatus of fluoride waste, and it includes the oil interceptor, dosing reaction tank, neutralization pond, second pond and the central control module that are sequentially connected, and sewage pump is electrically connected with central control module;Skimming plate of the minimum point less than the pool wall peak of oil interceptor is provided with above oil interceptor, during the oil slick and scum silica frost in sewage skimmed into the collection slag bath of side;Dosing reaction tank includes the reaction medicating mechanism that a delivery valve is electrically connected with by central control module with elevator pump, medicament is added fully to be reacted in dosing reaction tank by reacting medicating mechanism, and flocculation separation goes out supernatant, neutralization pond includes the neutralization medicating mechanism that a delivery valve is electrically connected with pH on-line detectors, the pH on-line checkings probe of pH on-line detectors is arranged in neutralization pond, controls to neutralize the switch of medicating mechanism delivery valve by its monitoring result;Detachable inclined tube is finally provided with second pond, carrying out that High-rate sedimentation reaches to sewage can discharge standard.

Description

The integrated sewage treating apparatus of fluoride waste
Technical field
The present invention relates to a kind of sewage-treatment plant, and in particular to a kind of integrated sewage treating apparatus of fluoride waste.
Background technology
With the development of technological innovation, the application field of fluorine-containing electronic chemical product constantly expands, and has penetrated into national economy With the every field of national defense construction.Fluorine-containing electronic chemical product as fluorine-containing electronic chemical product upstart's ability ground zero, development potentiality It is huge, there is no high-quality fluorine-containing electronic chemical product to be impossible to produce high performance electronic component, and fluorine-containing electronization One of problem that the high speed exhibition of product brings is exactly the increasing fluorine-containing electronic chemical product manufacture waste water for urgently processing.
Do not manufacture the ripe scheme of wastewater treatment for fluorine-containing electronic chemical product also in the market, it is existing fluorine-containing useless Method for treating water mainly has absorption method, electrocoagulation, hyperfiltration, ion-exchange, chemical precipitation method and coagulation sedimentation etc.. In these methods, ion-exchange is costly, and strict to waste water quality requirement;Wherein electrocoagulation and hyperfiltration device are answered Miscellaneous, power consumption is big, investment and operating cost are high, thus all few use.
The content of the invention
The present invention is directed to the quality of all kinds of methods in the prior art, and the characteristics of combination fluorine-containing electronic chemical product manufacture waste water It is analyzed, proposes a kind of integrated sewage treating apparatus of fluoride waste.
To reach above-mentioned technical purpose, technical scheme provides a kind of integrated sewage disposal dress of fluoride waste Put, it includes being sequentially connected the oil interceptor of setting, dosing reaction tank, neutralization pond, second pond and central control module, it is described every Oil sump, dosing reaction tank, neutralization pond, the delivery port of second pond be arranged at pool wall top, sewage by elevator pump pump to every In oil sump, the elevator pump is electrically connected with central control module;
A detachable skimming plate, the pool wall of the minimum point less than oil interceptor of the skimming plate are provided with above the oil interceptor Peak;
The dosing reaction tank includes a reaction medicating mechanism, and the delivery valve of the reaction medicating mechanism is controlled by center Module is electrically connected with elevator pump;
The neutralization pond includes that one neutralizes medicating mechanism, and the delivery valve of the neutralization medicating mechanism passes through central control module It is electrically connected with a pH on-line detectors, the pH on-line checkings probe of the pH on-line detectors is arranged in neutralization pond;
Detachable inclined tube is provided with the second pond.
Preferably, the oil interceptor delivery port is set less than pool wall peak.
Preferably, the skimming plate is movably arranged on a guide rail by a sliding block, and the motor of the guide rail is with Centre control module is electrically connected with.
Preferably, liquid level gauge is provided with the oil interceptor, the liquid level gauge is electrical with elevator pump by central control module Connection.
Preferably, the dosing reaction tank includes fluorine removal medicament mixing subpool and PAM mixing subpools, is flowed out from oil interceptor Sewage sequentially pass through fluorine removal medicament mixing subpool, PAM mixing subpools and enter back into dosing reaction tank.
Preferably, the fluorine removal medicament mixing subpool, PAM mixing subpool include that fluorine removal medicament medicating mechanism, PAM add respectively Medicine mechanism.
Preferably, the fluorine removal medicament medicating mechanism, the delivery valve of PAM medicating mechanisms pass through central control module and carry Pump is risen to be electrically connected with.
Preferably, be mounted on agitator in the fluorine removal medicament mixing subpool and PAM mixing subpools, the agitator with Central control module is electrically connected with.
Preferably, the bottom of pond of the dosing reaction tank, neutralization pond and second pond is equipped with sludge hopper, a spoil disposal pipeline Suction end is respectively protruding into sludge hopper, and the outlet side of the spoil disposal pipeline is stretched out outside pond body, and the height of outlet side is less than pond body Interior liquid level.
Preferably, the integrated sewage treating apparatus of the fluoride waste also include a storage basin, the spoil disposal pipeline Outlet side connects storage basin, and the delivery outlet of the storage basin is arranged on bottom of pond, and is connected with sludge suction pump by blow-off line, The sludge suction pump is electrically connected with central control module.
The integrated sewage treating apparatus of fluoride waste of the present invention, it is provided with removably by oil interceptor Skimming tool, it is in the oil slick and scum silica frost in sewage skimmed into the collection slag bath of side and anti-in dosing by reacting medicating mechanism Ying Chizhong adds fluorine removal medicament, PAM fully to be reacted, and flocculation separation goes out supernatant, is finally neutralized in neutralization pond After adjustment, according to shallow pool principle, the sewage to flowing into second pond carries out High-rate sedimentation so that water outlet reach can discharge standard. The integrated sewage treating apparatus of fluoride waste of the present invention, simple structure is easy to operate, is suitable to extensive use.
Brief description of the drawings
Fig. 1 is the top view of the integrated sewage treating apparatus of fluoride waste of the present invention;
Fig. 2 is the front view of the integrated sewage treating apparatus of fluoride waste of the present invention;
Fig. 3 is the circuit module control block diagram of the integrated sewage treating apparatus of fluoride waste of the present invention.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and It is not used in the restriction present invention.
The embodiment provides a kind of integrated sewage treating apparatus of fluoride waste, as shown in Figure 1 to Figure 3, It includes being sequentially connected the oil interceptor 10 of setting, dosing reaction tank 20, neutralization pond 30, second pond 40 and central control module 50, the oil interceptor 10, dosing reaction tank 20, neutralization pond 30, the delivery port of second pond 40 are arranged at pool wall top, and sewage leads to Cross during elevator pump 60 pumps to oil interceptor 10, the elevator pump 60 is electrically connected with central control module 50.
Liquid level gauge 11 is provided with the oil interceptor 10, the liquid level gauge 11 is by central control module 50 and the electricity of elevator pump 60 Property connection, the liquid level gauge 11 is provided with minimum liquid level and highest liquid level, and the highest liquid level is arranged at the pool wall of oil interceptor 10 most High point, therefore, when the liquid level in oil interceptor 10 is less than minimum liquid level, the control work of elevator pump 60 of the central control module 50 Make, to sewage is passed through in oil interceptor 10, when the liquid level in oil interceptor 10 reaches minimum liquid level, the central control module 50 is controlled Elevator pump processed 60 is stopped.
The top of the oil interceptor 10 is provided with a detachable skimming plate 12, and the minimum point of the skimming plate 12 is less than oil interceptor 10 pool wall peak, for skimming the oil slick in sewage level in oil interceptor 10 and scum silica frost;The skimming plate 12 passes through one Sliding block is movably arranged on a guide rail 13, and motor 14 and the central control module 50 of the guide rail 13 are electrically connected with.It is described Stroke end of the skimming plate 12 on guide rail 13 is provided with a collection slag bath 70;The collection slag bath 70 is arranged on oil interceptor 10 and is not provided with The side of delivery port, the delivery port of the oil interceptor 10 is set less than pool wall peak, it is to avoid oil slick scum silica frost is entered by delivery port In dosing reaction tank 20.
When the liquid level in oil interceptor 10 reaches minimum liquid level, the driving electricity of the control guide rail 13 of the central control module 50 Machine 14 works, and skimming plate 12 carries out skimming under the drive of motor to liquid level, and can be in liquid level in skimming stroke motion Take up the very low ripples of rising and falling, when skimming plate 12 moves to stroke end, oil slick and scum silica frost crossed under the drive of ripples every Pool wall between oil sump 10 and collection slag bath 70 is flowed into collection slag bath 70.
The dosing reaction tank 20 includes fluorine removal medicament mixing subpool 21 and PAM mixing subpool 22, is flowed from oil interceptor 10 The sewage for going out sequentially passes through fluorine removal medicament mixing subpool 21, PAM mixing subpool 22 and enters back into dosing reaction tank 20, the fluorine removal medicine Agent mixing subpool 21, PAM mixing subpool 22 include fluorine removal medicament medicating mechanism 211, PAM medicating mechanisms 221, the fluorine removal respectively Medicament medicating mechanism 211, PAM medicating mechanisms 221 include medicine-adding bin, dosing pump and chemical feed pipe, the fluorine removal medicament dosing Mechanism 211, the input port of the chemical feed pipe of PAM medicating mechanisms 221 each lead into fluorine removal medicament mixing subpool 21, PAM mixing subpools In 22, the switch valve 201 for being arranged at the dosing mouth of pipe is electrically connected with by central control module 50 with elevator pump 60.
Because lifting flow of the elevator pump 60 within the unit interval is fixed, and the dosing mouth of pipe switch valve 201 in list The dose of output is fixed in the time of position, therefore the central control module 50 determines dirt by monitoring the working time of elevator pump 60 The increased volume of water, so that the accordingly switch time of the switch valve 201 of the control dosing mouth of pipe.Meanwhile, the fluorine removal medicament mixing The agitator 202 being electrically connected with central control module 50 is mounted in subpool 21 and PAM mixing subpool 22, makes fluorine removal medicament Sewage in mixing subpool 21 and PAM mixing subpool 22 is sufficiently mixed with medicament.
The sewage enters dosing reaction tank after being sufficiently mixed in fluorine removal medicament mixing subpool 21, PAM mixing subpool 22 In 20, chemical reaction is carried out in dosing reaction tank 20 and separates out supernatant and sludge, the sludge sinks under gravity Bottom of pond, the supernatant is entered in neutralization pond 30 by top delivery port.
The neutralization pond 30 includes that one neutralizes medicating mechanism 31, during the delivery valve 301 for neutralizing medicating mechanism 31 passes through Centre control module 50 is electrically connected with a pH on-line detectors 32, and the pH on-line checkings probe of the pH on-line detectors 32 is set In in neutralization pond 30;The pH value that the pH on-line detectors 32 are popped one's head in real-time monitoring neutralization pond 30 by pH on-line checkings, when When pH value in neutralization pond 30 is higher than 9, the delivery valve 301 that the control of the central control module 50 neutralizes medicating mechanism 31 is opened, Until the pH value in pH on-line checking probe monitors neutralization pond 30 is not more than 9, also it is provided with the neutralization pond 30 and is controlled with center The agitator 202 that molding block 50 is electrically connected with, mixes soda acid more uniform;PH value range in the neutralization pond 30 is preferably 6~9.
Detachable inclined tube 41 is provided with the second pond 40, according to shallow pool principle, the sewage flowed into second pond 40 leads to Crossing the inclined tube 41 carries out High-rate sedimentation so that the water outlet of second pond 40 reach can discharge standard.
The bottom of pond of the dosing reaction tank 20, neutralization pond 30 and second pond 40 is equipped with sludge hopper 81, described fluorine-containing useless The integrated sewage treating apparatus of water also include a storage basin 80, and the storage basin 80 is by spoil disposal pipeline 82 and dosing reaction tank 20th, neutralization pond 30 and second pond 40 are connected, and the suction end of the spoil disposal pipeline 82 is respectively protruding into sludge hopper 81, and outlet side is stretched Go out in storage basin 80, and outlet side is provided with mud valve 83, wherein, the height of the outlet side of the spoil disposal pipeline 82 is anti-less than dosing The liquid level in pond 20, neutralization pond 30 and second pond 40 is answered, therefore in spoil disposal, the mud valve 83 of discharge pipeline is opened i.e. Pool bottom sludge can be entered by static pressure and temporarily be stored in storage basin 80;The delivery outlet of the storage basin 80 is arranged on bottom of pond, And be connected with sludge suction pump 85 by blow-off line 84, the sludge suction pump 85 is electrically connected with central control module 50.
The integrated sewage treating apparatus of fluoride waste of the present invention, it is provided with detachably by oil interceptor 10 Skimming tool, in the oil slick and scum silica frost in sewage skimmed into the collection slag bath 70 of side, and in fluorine removal medicament mixing subpool 21 Fully reacted with dosing in PAM mixing subpool 22, entered in dosing reaction tank 20 by flow by gravity and flocculated, isolate supernatant Liquid, according to shallow pool principle after finally carrying out neutralization adjustment in neutralization pond 30, the sewage to flowing into second pond 40 is efficiently sunk Form sediment so that water outlet reach can discharge standard.
Using the integrated sewage treating apparatus of fluoride waste of the present invention, GB is reached after wastewater treatment can be made 18918-2002《Urban wastewater treatment firm pollutant emission standard》One-level A is marked, and fluoride can reach GB8978- in waste discharge 1996《Integrated wastewater discharge standard》Primary standard in table 4.And the integrated sewage treating apparatus of fluoride waste of the present invention Treatment effect it is excellent, it is stable, can be widely applied to fluorine-containing electronic chemical product manufacture waste water and other fluoride wastes Treatment.
The specific embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis Various other corresponding change and deformation that technology design of the invention is made, should be included in the guarantor of the claims in the present invention In the range of shield.

Claims (10)

1. a kind of integrated sewage treating apparatus of fluoride waste, it is characterised in that the oil interceptor including being sequentially connected setting (10), dosing reaction tank (20), neutralization pond (30), second pond (40) and central control module (50), the oil interceptor (10), Dosing reaction tank (20), neutralization pond (30), the delivery port of second pond (40) are arranged at pool wall top, and sewage passes through elevator pump (60) pump in oil interceptor (10), the elevator pump (60) is electrically connected with central control module (50);
A detachable skimming plate (12) is provided with above the oil interceptor (10), the minimum point of the skimming plate (12) is less than oil removal The pool wall peak in pond (10);
During the dosing reaction tank (20) includes that a dosing reaction mechanism, the switch valve (201) of the dosing reaction mechanism pass through Centre control module (50) is electrically connected with elevator pump (60);
The neutralization pond (30) neutralizes medicating mechanism (31) including one, and the delivery valve (301) for neutralizing medicating mechanism (31) leads to Cross central control module (50) to be electrically connected with a pH on-line detectors (32), the pH of the pH on-line detectors (32) is examined online Probing head is arranged in neutralization pond (30);
Detachable inclined tube (41) is provided with the second pond (40).
2. integrated sewage treating apparatus of fluoride waste according to claim 1, it is characterised in that the oil interceptor (10) Delivery port is set less than pool wall peak.
3. integrated sewage treating apparatus of fluoride waste according to claim 2, it is characterised in that the skimming plate (12) It is movably arranged on a guide rail (13) by a sliding block, motor (14) and the central control module (50) of the guide rail (13) It is electrically connected with.
4. integrated sewage treating apparatus of fluoride waste according to claim 1, it is characterised in that the oil interceptor (10) Liquid level gauge (11) is inside provided with, the liquid level gauge (11) is electrically connected with by central control module (50) and elevator pump (60).
5. integrated sewage treating apparatus of fluoride waste according to claim 1, it is characterised in that the dosing reaction tank (20) including fluorine removal medicament mixing subpool (21) and PAM mixing subpool (22), the sewage of outflow is passed through successively from oil interceptor (10) Cross fluorine removal medicament mixing subpool (21), PAM mixing subpool (22) and enter back into dosing reaction tank (20).
6. integrated sewage treating apparatus of fluoride waste according to claim 5, it is characterised in that the fluorine removal medicament is mixed Zygote pond (21), PAM mixing subpool (22) include fluorine removal medicament medicating mechanism (211), PAM medicating mechanisms (221) respectively.
7. integrated sewage treating apparatus of fluoride waste according to claim 6, it is characterised in that the fluorine removal medicament adds Medicine mechanism (211), the switch valve (201) of PAM medicating mechanisms (221) are by central control module (50) and elevator pump (60) electricity Property connection.
8. integrated sewage treating apparatus of fluoride waste according to claim 6, it is characterised in that the fluorine removal medicament is mixed Agitator (202), the agitator (202) and center control mould are mounted in zygote pond (21) and PAM mixing subpool (22) Block (50) is electrically connected with.
9. integrated sewage treating apparatus of fluoride waste according to claim 1, it is characterised in that the dosing reaction tank (20), the bottom of pond of neutralization pond (30) and second pond (40) is equipped with sludge hopper (81), the suction end point of a spoil disposal pipeline (82) Do not stretch into sludge hopper (81), the outlet side of the spoil disposal pipeline (82) is stretched out outside pond body, and the height of outlet side is less than pond body Interior liquid level.
10. integrated sewage treating apparatus of fluoride waste according to claim 9, it is characterised in that the fluoride waste Integrated sewage treating apparatus also include a storage basin (80), the spoil disposal pipeline (82) outlet side connection storage basin (80), the delivery outlet of the storage basin (80) is arranged on bottom of pond, and is connected with sludge suction pump (85) by blow-off line (84), The sludge suction pump (85) is electrically connected with central control module (50).
CN201710255568.1A 2017-04-19 2017-04-19 The integrated sewage treating apparatus of fluoride waste Pending CN106927600A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710255568.1A CN106927600A (en) 2017-04-19 2017-04-19 The integrated sewage treating apparatus of fluoride waste

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710255568.1A CN106927600A (en) 2017-04-19 2017-04-19 The integrated sewage treating apparatus of fluoride waste

Publications (1)

Publication Number Publication Date
CN106927600A true CN106927600A (en) 2017-07-07

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Country Status (1)

Country Link
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006055728A (en) * 2004-08-19 2006-03-02 Matsushita Electric Ind Co Ltd Method and apparatus for treating fluorine-containing wastewater
JP2007209886A (en) * 2006-02-09 2007-08-23 Bokuto Kasei Kogyo Kk Fluorine removing agent, and method and apparatus for treating drain containing fluorine using the agent
WO2008067723A1 (en) * 2006-12-05 2008-06-12 Fada Xie Method and device for treating waste water congtaining fluorine by using limestone
CN201424419Y (en) * 2009-05-18 2010-03-17 浙江科技学院 High-concentration fluorine-containing wastewater treatment system
CN101875518A (en) * 2010-07-01 2010-11-03 陈启松 Treatment method of stainless steel pickling waste water
CN103102027A (en) * 2013-02-26 2013-05-15 宏大中源太阳能股份有限公司 Sewage treatment system and method for solar cell production
CN205346900U (en) * 2016-01-12 2016-06-29 绍兴鑫杰环保科技有限公司 Oil separator

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006055728A (en) * 2004-08-19 2006-03-02 Matsushita Electric Ind Co Ltd Method and apparatus for treating fluorine-containing wastewater
JP2007209886A (en) * 2006-02-09 2007-08-23 Bokuto Kasei Kogyo Kk Fluorine removing agent, and method and apparatus for treating drain containing fluorine using the agent
WO2008067723A1 (en) * 2006-12-05 2008-06-12 Fada Xie Method and device for treating waste water congtaining fluorine by using limestone
CN201424419Y (en) * 2009-05-18 2010-03-17 浙江科技学院 High-concentration fluorine-containing wastewater treatment system
CN101875518A (en) * 2010-07-01 2010-11-03 陈启松 Treatment method of stainless steel pickling waste water
CN103102027A (en) * 2013-02-26 2013-05-15 宏大中源太阳能股份有限公司 Sewage treatment system and method for solar cell production
CN205346900U (en) * 2016-01-12 2016-06-29 绍兴鑫杰环保科技有限公司 Oil separator

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Application publication date: 20170707

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