CN109250794A - Fluorine-containing wastewater treatment system - Google Patents
Fluorine-containing wastewater treatment system Download PDFInfo
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- CN109250794A CN109250794A CN201810704549.7A CN201810704549A CN109250794A CN 109250794 A CN109250794 A CN 109250794A CN 201810704549 A CN201810704549 A CN 201810704549A CN 109250794 A CN109250794 A CN 109250794A
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- unit
- pending water
- fluorine
- reaction member
- wastewater treatment
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 18
- 239000011737 fluorine Substances 0.000 title abstract description 19
- 229910052731 fluorine Inorganic materials 0.000 title abstract description 19
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 19
- 239000013078 crystal Substances 0.000 claims abstract description 18
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims description 27
- 230000001413 cellular effect Effects 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 15
- 239000011734 sodium Substances 0.000 claims description 12
- 230000004308 accommodation Effects 0.000 claims description 10
- 230000008676 import Effects 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 claims description 3
- 229910001415 sodium ion Inorganic materials 0.000 claims description 3
- 150000002222 fluorine compounds Chemical group 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 229910001610 cryolite Inorganic materials 0.000 abstract description 3
- -1 aluminum ions Chemical class 0.000 abstract description 2
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 6
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 5
- 239000012266 salt solution Substances 0.000 description 5
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 4
- 238000006115 defluorination reaction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 150000002221 fluorine Chemical class 0.000 description 2
- 239000010436 fluorite Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- MPPQGYCZBNURDG-UHFFFAOYSA-N 2-propionyl-6-dimethylaminonaphthalene Chemical compound C1=C(N(C)C)C=CC2=CC(C(=O)CC)=CC=C21 MPPQGYCZBNURDG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000254158 Lampyridae Species 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003682 fluorination reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
- C02F2101/14—Fluorine or fluorine-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
A fluorine-containing wastewater treatment system comprises a direct current power supply unit, a water to be treated leading-in unit, a reaction unit, an anode unit, a cathode unit and a pH control unit. When the direct current power supply unit supplies power, the anode unit is used for providing aluminum ions for the water to be treated guided in the water to be treated introduction unit, and generates cryolite crystals by matching with the fluorine ion reaction in the water to be treated and precipitating at the bottom of the reaction unit. Therefore, the invention realizes the advantages that the waste aluminum scraps can be used as wastes in the anode unit, the porous metal container can effectively fix the waste aluminum scraps, and the molar ratio of Al/F, the pH value and the molar ratio of Na/F can be controlled to be in a specific range so as to achieve good fluorine removal effect, and the like.
Description
Technical field
The present invention relates to a kind of fluorine-contained wastewater treatment systems, are especially used to handle fluoride waste to generate ice crystal crystallization
The system of body.Wherein, the present invention reach aluminium scrap bits when anode unit can waste utilization, cellular canister can effectively fix and give up
Aluminium skimmings reach good defluorination effect to particular range with controllable A1/F molar ratio, pH value and Na/F molar ratio.
Background technique
In semi-conductor industry, panel industry, solar energy industry, hydrofluoric acid of the concentration up to 49% or more
(Hydrofluoric acid, abbreviation HF), is usually used to etching or cleaning.According to different process requirements, hydrofluoric acid is frequent
It can be closed with other acid-mixeds, such as: phosphoric acid, nitric acid and sulfuric acid.In TaiWan, China, high-concentration fluorine-containing waste water mainly passes through synthesis firefly
The synthesis of stone (synthetic fluorite) or prodan (sodium fluorosilicate) is recycled.
For low concentration fluoride waste, fluorine-containing concentration at least 0.5%, the removal of fluorine ion mainly passes through fluorination
Calcium (fluorite, CaF2) the different calcium salt of addition chemical precipitation method.Due to generate superfine particle (0.1 micron), will use
It achieves the goal to coagulant or flocculant.As a result, a large amount of sludge can be generated, but wherein fluorinated volume is extremely low, leads to this sludge
The difficulty for reusing or handling improves.Further, since fluorine is corrosive for kiln, therefore the ratio that can add sludge is controlled in
3% or less.
At 2014 and 2015, TaiWan, China using dosage of the calcium fluoride sludge in cement industry be 27802 tons and
27991 tons.However, for more and more harsh environmental protection act, in addition the cement output of TaiWan, China glides, it is necessary to which research and development are new
Technology, to solve low concentration fluoride waste, and the processing to fluoride waste.
About TaiWan, China disclosure of the invention code T W-201619063's (TaiWan, China patent of invention TW-I588097)
" fluorine-containing wastewater treatment method ", a kind of revealed fluorine-containing wastewater treatment method, the method comprise the steps of: firstly, executing
Water inlet step is to mixing well slot.Then, by fluorine ion detection unit to control the fluorinion concentration for mixing well the pending water in slot.
Then, the pending water and aluminum salt solution are imported to fluidized bed crystallization slot, be obtained by mixing ice crystal (Cryolite,
Na3AlF6) crystalline solid.Wherein, due to needing to import aluminum salt solution, higher cost is needed, and not consider to be worth doing using aluminium scrap.
In view of this, it is necessary to develop the technology that can solve above-mentioned drawbacks common.
Summary of the invention
The present invention is a kind of fluorine-contained wastewater treatment system, and can reach following effect: aluminium scrap bits are when anode unit can waste
Aluminium scrap bits and controllable Al/F molar ratio, pH value and Na/F molar ratio can be effectively fixed extremely using, cellular canister
Particular range and reach good defluorination effect.To solve the problem of existing to need to import aluminum salt solution and need higher cost.
Therefore, the present invention provides a kind of fluorine-contained wastewater treatment system comprising:
One DC power supply supply unit has a positive electricity supply department and a negative electricity supply department, for supplying a predetermined voltage
Direct current；
One pending water import unit, for feeding a pending water；The water system to be processed is fluoride waste；
One reaction member has an accommodation space, for accommodating the pending water；
One anode unit is set in the accommodation space；There is the anode unit cellular canister and an aluminium scrap to consider to be worth doing,
The cellular canister runs through through-hole with multiple, and can wherein accommodate aluminium scrap bits；The anode unit is led by one first
Line connects the positive electricity supply department；
One cathode electrode unit is set in the accommodation space, and is spaced apart with the anode unit；The cathode electrode unit includes at least one
Cathodic metal plate connects the negative electricity supply department by one second conducting wire；
One pH control unit, for adjusting and controlling the pH value of the pending water in the reaction member；
Whereby, aluminium scrap bits are placed in the cellular canister to constitute anode, and to the pending water provide aluminium from
Son is reacted with the fluorine ion in the pending water, and generates ice crystal crystalline solid, and be deposited in the bottom of the reaction member.
Above-mentioned purpose and advantage of the invention is not difficult from the detailed description and accompanying drawings of following selected embodiments, obtains
It understands in depth.
Now with the following example and cooperates attached drawing the present invention will be described in detail in rear:
Detailed description of the invention
Fig. 1 is the perspective view of fluorine-contained wastewater treatment system of the invention；
Fig. 2 is the schematic diagram of the system architecture of fluorine-contained wastewater treatment system of the invention；
Fig. 3 is the schematic diagram of the corresponding relationship of the removal efficiency of Al/F molar ratio and fluorine at various ph values of the invention；
Fig. 4 is the schematic diagram for the experimental result that the present invention is 5.0 in pH value；
Fig. 5 is the schematic diagram for the experimental result that the present invention is 5.5 in pH value；
Fig. 6 is the schematic diagram for the experimental result that the present invention is 6.0 in pH value；
Fig. 7 is the schematic diagram for the experimental result that the present invention is 6.5 in pH value；
Fig. 8 is the schematic diagram of main frame of the invention actually taken pictures；
Fig. 9 is the schematic diagram actually taken pictures that aluminium scrap of the invention is considered to be worth doing.
[primary clustering description of symbols]
10 direct current power supply unit, 11 positive electricity supply department
12 negative electricity supply department, 13 multimeter
20 pending water import unit, 21 control flume
22 ingress pipe, 23 delivery line
24 force (forcing) pump, 25 return pipe
30 reaction member, 31 accommodation space
40 anode unit, 41 cellular canister
42 aluminium scraps consider 43 first conducting wires to be worth doing
50 cathode electrode unit, 51 cathodic metal plate
52 second conducting wire 60pH control units
The disturbance of 70 fluorine ion detection units 80 generates unit
Specific embodiment
Fig. 1, Fig. 2 and Fig. 8 are please referred to, the present invention is a kind of fluorine-contained wastewater treatment system, specifically includes that a DC power supply supplies
Answer unit 10, a pending water import unit 20, a reaction member 30, an anode unit 40, a cathode electrode unit 50 and pH control
Unit 60 processed.
About the direct current power supply unit 10, there is a positive electricity supply department 11 and a negative electricity supply department 12, for supplying
The direct current of one predetermined voltage；It certainly, can also include again a multimeter 13 (Multimeter), for measuring its electric current and electricity
The state of pressure.
About the pending water import unit 20, for feeding a pending water；The pending water is fluoride waste.
Certainly, which discloses code T W-201619063 (TaiWan, China see also TaiWan, China patent of invention
Patent of invention TW-1588097) " fluorine-containing wastewater treatment method " in way, import high-concentration fluorine-containing waste water and low in advance
Concentration fluoride waste, then control and mix well to a scheduled fluorinion concentration, it is published technology that this, which mixes well technology, is not gone to live in the household of one's in-laws on getting married herein
It states.
About the reaction member 30, there is an accommodation space 31, for accommodating the pending water.
About the anode unit 40, it is set in the accommodation space 31；The anode unit 40 holds with a cellular metal
Device 41 (may be, for example, latticed cylinder or other shapes of multiple hole basket) and aluminium scrap bits 42 (refering to Fig. 9, are for example, cut
Aluminium scrap bits after cutting)；The cellular canister 41 runs through through-hole (for liquid communication) with multiple, and cuts for accommodating this
The aluminium scrap bits 42 of swarf shape；The anode unit 40 connects the positive electricity supply department 11 by one first conducting wire 43.
Especially it is noted that the aluminium scrap bits 42 in Fig. 1 are the state before merging, understood with facilitating, in actual use
Then to be placed in the cellular canister 419, and it is completely immersed in the pending water.
It about the cathode electrode unit 50, is set in the accommodation space 31, and is spaced apart with the anode unit 40；The cathode electrode unit
50 include that (for example, stainless steel plate of two panels or more is spaced 1 centimetre with the anode unit 40 to an at least cathodic metal plate 51
Or other distances), which is connected by one second conducting wire 52.
The pH control unit 60, for adjusting and controlling the pH value of the pending water in the reaction member 30.For example, adopting
With the product for the PC3200 model that the Shang Tai instrument company (Suntex Instruments Co., Ltd.) of TaiWan, China manufactures.
Whereby, aluminium scrap bits 42 are placed in the cellular canister 41 to constitute anode, and are provided the pending water
Aluminium ion is reacted with the fluorine ion in the pending water, and is generated ice crystal crystalline solid (being not shown on figure) and be deposited in this instead
Answer the bottom of unit 30.
Therefore, the present invention realizes the unique way being placed in the cellular canister 41 using aluminium scrap bits 42, into
Row removes the purpose of the fluorine ion in the pending water.
Certainly, the present invention can add a fluorine ion detection unit 70 again, be set in the fluorine ion detection unit, be used for
Detect the fluorinion concentration of the pending water in the reaction member 30.
In practice, the pending water import unit 20 can be return line, have a control flume 21, an ingress pipe 22,
One delivery line 23, a force (forcing) pump 24 and a return pipe 25.The ingress pipe 22 connects the control flume 21 and the reaction member 30, is used for
The pending water is imported into the reaction member 30, which connects the reaction member 30 and the control flume 21, and being used for should
Pending water exports the reaction member 30, which is set between the delivery line 23 and the control flume 21, leads for pressurizeing
The pending water out, the return pipe 25 are set between the force (forcing) pump 24 and the control flume 21, should for importing the pending water
Control flume 21, and form reflux cycle.
The pH control unit 60 is set in the control flume 21, and then controllable pending water imported from the control flume 21
PH value.
In addition, can also add a disturbance again generates unit 80, such as brand is (CemarecTM) the U.S. fiber crops state manufacture
It disturbs hot plate (Stirring Hot Plates), is placed under the reaction member 30, and make being somebody's turn to do wait locate in the reaction member 30
It manages water and generates disturbance, make reaction more preferably.
Also sodium ion is added in the pending water, and its control is in following condition:
The pH value of [a] pending water controls between 5.0-6.5, and Al/F molar ratio is between 0.8/6~1.2/6.
The pH value of [b] pending water controls between 6.0~6.5, and Al/F molar ratio is between 1/6~3/6, and
Na/F molar ratio is between 4/6~12/6.
About experimental data of the invention, referring to Fig. 3, it is the shifting of this fluorine when pH value is fixed on 5,5.5 and 6.0
Except efficiency.Wherein, the horizontal axis of Fig. 3 is Al/F molar ratio, unit X/6；Wherein Al is calculated with Faraday's law.And the longitudinal axis
For the removal rate (Fluoride Removal Efficiency, unit %) of fluorine.
When Al/F molar ratio is 1/6, though pH value how much, the removal rate of this fluorine reaches maximum value.
When Al/F molar ratio is greater than 1/6, pH value is controlled at 6, and the removal rate of fluorine keeps stablizing, and up to 90~100%
Between, it is ideal result.
When Al/F molar ratio is greater than 1/6, pH value is controlled at 5.5, and the removal rate of fluorine also keeps stablizing after slightly declining, and
90% or more, and it is good.
When Al/F molar ratio is greater than 1/6, pH value is controlled at 5.0, and the removal rate of fluorine is gradually reduced.
Therefore, though pH value how much, if Al/F molar ratio between 0.8/6 to 1.2/6, should there is the removal of good fluorine
Rate.
Refering to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, fixed condition is F at this time-=0.15 mole, but pH value controls respectively
5.0,5.5,6.0,6.5 when, the relational graph of Na/F moles of when Al/F molar ratio and ice crystal generation rate.
As shown in Figure 4, at 5.0, mainly Al/F molar ratio is at 1/6 or so, ice crystal generation rate for pH value control
Up to 90% or more.
As shown in Figure 5, at 5.5, mainly Al/F molar ratio is at 1/6 or so, ice crystal generation rate for pH value control
Up to 90% or more.In addition, when Al/F molar ratio is greater than 1/6, if Na/F molar ratio is close at 11/6~12/6, ice crystal
Stone generation rate about can be 70%.
It will be appreciated from fig. 6 that the control of its pH value is at 6.0, mainly Al/F molar ratio is at 1/6 or so, ice crystal generation rate
Up to 90% or more.In addition, when A1/F molar ratio is greater than 1/6, if Na/F molar ratio, at 4/6~12/6, ice crystal generates
Rate can maintain 70% or more.
As shown in Figure 7, at 6.5, mainly Al/F molar ratio is at 1/6 or so, ice crystal generation rate for pH value control
Up to 90% or more.In addition, when Al/F molar ratio is greater than 1/6, if Na/F molar ratio, at 4/6~12/6, ice crystal generates
Rate can maintain 70% or more.
Also that is, conclusion can be obtained are as follows:
[a] Al/F molar ratio at 1/6 or so, when pH value control in 5.0-6.5, ice crystal generation rate up to 90% with
On.And Al/F molar ratio may be defined as 0.8/6 to 1.2/6 range 1/6 or so.
[b] is controlled when pH value when 6.0~6.5 and Al/F molar ratio is greater than 1/6, if Na/F molar ratio is 4/6~12/6
When, ice crystal generation rate can maintain 70% or more, also up to practical degree.
Advantages of the present invention and effect can be concluded are as follows:
[1] aluminium scrap is considered to be worth doing when anode unit can waste utilization.The aluminium ion source of traditional approach is aluminum salt solution, and of the invention
Cleverly treat as aluminium ion source with aluminium scrap bits (anode for being connected to power supply), not only saves the cost of aluminum salt solution, also reach
It is quite environmentally friendly to the purpose of waste utilization.Therefore, aluminium scrap is considered to be worth doing when anode unit can waste utilization.
[2] cellular canister can effectively fix aluminium scrap bits.Cellular canister of the invention seems a container,
The moving range for limiting these aluminium scraps bits, it is very convenient in operation when to take out observation or to supplement aluminium scrap bits.Therefore, more
Perforated metal container can effectively fix aluminium scrap bits.
[3] Al/F molar ratio, pH value and Na/F molar ratio can control to reach good defluorination effect to particular range.This
There are two types of way, the first way is for invention: control Al/F molar ratio is 1/6 or so, and when pH value control is in 5.0-6.5,
Ice crystal generation rate is up to 90% or more.Second of way is: when pH value control is greater than 1/6 in 6.0~6.5 and Al/F molar ratio
When, it, can also up to practical degree if Na/F molar ratio, at 4/6~12/6, ice crystal generation rate can maintain 70% or more
For carrying out fluorine removal operation in related industry.Therefore, can control A1/F molar ratio, pH value and Na/F molar ratio to particular range and
Reach good defluorination effect.
The above is only the present invention will be described in detail by preferred embodiment, any simple modification for being made for the embodiment with
Variation, does not all depart from spirit and scope of the invention.
Claims (6)
1. a kind of fluorine-contained wastewater treatment system comprising:
One DC power supply supply unit has a positive electricity supply department and a negative electricity supply department, for supplying the straight of a predetermined voltage
Galvanic electricity；
One pending water import unit, for feeding a pending water；The pending water is fluoride waste；
One reaction member has an accommodation space, for accommodating the pending water；
One anode unit is set in the accommodation space；There is the anode unit cellular canister and an aluminium scrap to consider to be worth doing, this is more
Perforated metal container runs through through-hole with multiple, and can wherein accommodate aluminium scrap bits；The anode unit is connected by one first conducting wire
Meet the positive electricity supply department；
One cathode electrode unit is set in the accommodation space, and is spaced apart with the anode unit；The cathode electrode unit includes an at least cathode
Metal plate connects the negative electricity supply department by one second conducting wire；
One pH control unit, for adjusting and controlling the pH value of the pending water in the reaction member；
Whereby, aluminium scrap bits, which are placed in the cellular canister, constitutes anode, and provides aluminium ion to the pending water, with this
Fluorine ion reaction in pending water, and ice crystal crystalline solid is generated, and be deposited in the bottom of the reaction member.
2. fluorine-contained wastewater treatment system as described in claim 1, wherein joined sodium ion in the pending water, and control
In following condition:
The pH value of the pending water controls between 5.0-6.5, and Al/F molar ratio is between 0.8/6~1.2/6.
3. fluorine-contained wastewater treatment system as described in claim 1, wherein joined sodium ion in the pending water, and control
In following condition:
The pH value of the pending water controls between 6.0~6.5, and Al/F molar ratio is between 1/6~3/6, and Na/F moles
Than between 4/6~12/6.
4. fluorine-contained wastewater treatment system as described in claim 1, further include:
One fluorine ion detection unit is set in the fluorine ion detection unit, for detecting the pending water in the reaction member
Fluorinion concentration.
5. fluorine-contained wastewater treatment system as described in claim 1, wherein the pending water import unit is return line,
With a control flume, an ingress pipe, a delivery line, a force (forcing) pump and a return pipe；The ingress pipe connects the control flume and this is anti-
Unit is answered, for the pending water to be imported the reaction member, which connects the reaction member and the control flume, and being used for will
The pending water exports the reaction member, and the force (forcing) pump is between the delivery line and the control flume, and for pressurizeing, export should be wait locate
Water is managed, which is set between the force (forcing) pump and the control flume, for the pending water to be imported the control flume, and is formed back
Stream circulation.
6. fluorine-contained wastewater treatment system as described in claim 1, further include:
One disturbance generates unit, is placed under the reaction member, and the pending water in the reaction member is made to generate disturbance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW106123728A TWI637915B (en) | 2017-07-15 | 2017-07-15 | Fluorinated wastewater treatment system |
| TW106123728 | 2017-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109250794A true CN109250794A (en) | 2019-01-22 |
Family
ID=64797536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810704549.7A Pending CN109250794A (en) | 2017-07-15 | 2018-06-29 | Fluorine-containing wastewater treatment system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109250794A (en) |
| TW (1) | TWI637915B (en) |
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|---|---|---|---|---|
| CN101323485A (en) * | 2008-07-25 | 2008-12-17 | 山东大学 | Self-forming dynamic membrane coupling corrosion cell type effluent purification bed |
| CN105621733A (en) * | 2014-11-21 | 2016-06-01 | 大桂环境科技股份有限公司 | Method for treating fluorine-containing wastewater |
| CN106045139A (en) * | 2016-06-17 | 2016-10-26 | 红板（江西）有限公司 | Device and process for composite electrochemical reaction pretreatment and recycling of board surface cleaning water in circuit board industry |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW453978B (en) * | 1998-06-23 | 2001-09-11 | Ind Tech Res Inst | Crystallization process for removing fluoride from wastewater |
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| TW201908243A (en) | 2019-03-01 |
| TWI637915B (en) | 2018-10-11 |
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