CN202046950U - Purification treatment device for fluorine-containing industrial wastewater - Google Patents
Purification treatment device for fluorine-containing industrial wastewater Download PDFInfo
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- CN202046950U CN202046950U CN2011200429057U CN201120042905U CN202046950U CN 202046950 U CN202046950 U CN 202046950U CN 2011200429057 U CN2011200429057 U CN 2011200429057U CN 201120042905 U CN201120042905 U CN 201120042905U CN 202046950 U CN202046950 U CN 202046950U
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Abstract
The utility model relates to a purification treatment device for fluorine-containing industrial wastewater. The purification treatment device comprises a water collection tank, a rinsing trough, an oil-water separation tank, a neutralization reaction treatment tank and a slurry pump which are sequentially connected through pipelines, wherein a carbide slag emulsion tank and a diaphragm valve are sequentially connected with the neutralization reaction treatment tank through pipelines, a box pressure filter and a compressed air engine are connected with the neutralization reaction treatment tank through pipelines, a flexible valve, a sludge tank and a diaphragm pump are sequentially connected in series with the box pressure filter through pipelines, the compressed air engine, the flexible valve and the diaphragm pump are connected in parallel through a three-way valve, and the purification treatment device further includes a sludge recovery tank connected with the box pressure filter. The purification treatment device is characterized in that a membrane filter is connected between the slurry pump and the flexible valve through pipelines. The purification treatment device has the advantages of small occupied space and low operating cost, and can reduce secondary pollution and recycle purified water.
Description
Technical field
The utility model relates to the purification of waste water treatment facility of a kind of metallurgy, mechanical field particularly, more specifically, relate to a kind of to produce, the purification apparatus of the spent pickle liquor of processing stainless steel product, refer in particular to a kind of purification apparatus that is used for fluorine-containing trade effluent.
Background technology
In the steel work Production Flow Chart, cleanup acid treatment is important production process, and cleanup acid treatment is meant utilizes acid solution to remove the oxide skin on the steel surface and the method for corrosion thing.Wherein, in the cleanup acid treatment process of Stainless Steel Products, the main pickling medium of employing is hydrofluoric acid and nitric acid, and commonly used is the HNO-HF mixed acid solution.The cardinal principle of cleanup acid treatment is: the oxide compound (Fe of iron such as acid solution and oxide skin, iron rust
3O
4, Fe
2O
3, FeO etc.) and chemical reaction takes place, form salt and be dissolved in the acid solution and be removed.
Though cleanup acid treatment can be removed the impurity of steel work surface attachment preferably, improve the productive rate and the purity of steel work, the higher fluorion of content and other metal ions such as nickel, chromium, manganese etc. can residually be arranged in the trade effluent that produces after the cleanup acid treatment.If these trade effluents directly discharge without purifying treatment; meeting such as the fluorion in the waste water is along with water flows, permeates and circulation; enter surface water and shallow ground water polluted drinking water source, therefore can bring bigger harm environment protection and HUMAN HEALTH.Along with the people to improving day by day of requiring of quality of life and to the active demand of the recycling of water resources, governmental environmental protection department handles industrial waste water purifying and has higher requirement.
Purifying treatment for fluorine-containing trade effluent can be taked multiple technologies, and at present, the method that is used to handle fluorine-containing trade effluent both at home and abroad mainly comprises two kinds of absorption method and the precipitator method.
Absorption method employing sorbing material such as gac, activated alumina, ion exchange resin etc. are as carrier, and suspended particles such as absorption fluorochemical mainly are to be used for the low-concentration industrial waste water of fluorine content between 20～50mg/L.But the operation of this method production process and control are comparatively complicated, fund input amount is big, production cost is high and can not satisfy the scale operation needs, only for being applied to medium and small scale production.
The precipitator method adopt basic material such as calcium foundation stone ash or carbide slag etc. as carrier, utilize the throw out of the fluorion reaction generation Calcium Fluoride (Fluorspan) in calcium ion and the waste water, adopt simultaneously and add flocculation agent means such as (flocculation agent commonly used adopt the carbide slag emulsion), fluorion in the trade effluent is further flocculated, thereby reduce the fluorine content in the trade effluent.This method is disposed the fluorochemical suspended particle by chemical neutralization reaction mode, can be used for the higher industrial waste water purifying processing of fluoro-containing concentration and can handle a large amount of waste water, and infusion of financial resources and production cost all are lower than absorption method, operation in the production process is relative easy with control, can satisfy the needs of scale operation.So the precipitator method have become the fluorine-containing method for purifying treatment of industrial effluent that extensively adopts at present.
The complete treatment facility that being used for of generally adopting at present, fluorine-containing industrial waste water purifying handled mainly by oil-water separation tank, neutralization reaction treating pond, carbide slag emulsification pond, silt basin, chamber filter press, mud pond for recovering, once with secondary and treating pond and slag stock pump, surge pump, diaphragm valve, form around property valve and connection line, the employing oil-free compressed air is as source of the gas.Though this complete treatment facility can carry out effective purifying treatment to fluorine-containing trade effluent, satisfy demand to environment protection and resource recycling, also there is certain defective in this complete equipment, as:
1, equipment occupation space is excessive.Once be vertical-flow treating pond with the secondary-cleaned pond in this complete equipment, every cover floor space is 200～300 square metres, has occupied a large amount of spaces, therefore for realizing that the control automatization has bigger difficulty;
2, the production run cost is too high.In this complete equipment once with the secondary-cleaned pond in decontamination process in, all need add flocculation agent improving the decontamination effect improving of fluorion, thereby increase day-to-day operation cost and one-time investment cost;
3, control and operation easier are too high in the operational process.Owing to be subjected to the middle fluorine content influence of former water (being undressed fluorine-containing trade effluent) bigger, when the fluorine content fluctuation is big in the former water, through the difficult control of fluorine content in the water after the purifying treatment, if will reach even be lower than the industrial wastewater discharge standard (emission concentration of fluorine is that 10mg/L is following in the trade effluent) of national regulation, in also needing repeatedly and purifying treatment, and still need the supporting mode that adopts husky filtration, terminal secondary filter to combine to carry out subsequent disposal, thereby easily cause secondary pollution;
4, pass through direct discharging of waste water after the purifying treatment in a large number, reclaim comprehensive utilization, cause certain wasting of resources.
In sum, adopt at present that the suite of equipment of the fluorine-containing trade effluent of precipitator method purifying treatment exists that equipment occupation space is excessive, one-time investment cost and the day-to-day operation cost is too high, control and operation easier is too high and the trade effluent after purifying treatment directly discharges, drawback that can't recycling in the operational process.
The utility model content
For solving the problem of above-mentioned existence, the purpose of this utility model is to provide a kind of purification apparatus that is used for fluorine-containing trade effluent, overcoming the drawback that existing fluorine-containing industrial waste water purifying treatment facility exists, so provide a kind of technology rationally, device compact in design, occupation area of equipment be little, build infusion of financial resources less, running cost is low, easy and simple to handle, it is convenient to safeguard, the Industrial Wastewater Treatment amount big, the suite of equipment that reduces secondary pollution and can carry out recycling to the water after the purifying treatment.
For achieving the above object, the technical solution of the utility model is as follows:
A kind of purification apparatus that is used for fluorine-containing trade effluent, comprise the water collecting basin that is linked in sequence successively by pipeline, flushed channel, oil-water separation tank, neutralization reaction treating pond and slag stock pump, carbide slag emulsification pond is connected with described neutralization reaction treating pond by pipeline successively with diaphragm valve, chamber filter press, air compressor is connected with described neutralization reaction treating pond by pipeline respectively, around the property valve, silt basin, surge pump is connected in series with described chamber filter press successively by pipeline, described air compressor, be connected in parallel by the 3rd T-valve around property valve and surge pump, described purification apparatus also comprises the mud pond for recovering that connects described chamber filter press, it is characterized in that:
Be connected with film filter at described slag stock pump with between the property valve by pipeline.
The utility model replaces once being to adopt membrane filtration technique with the purpose in secondary-cleaned pond in the existing installation with film filter, will carry out the precision filtration treatment through the fluorine-containing trade effluent that contains microparticle and suspended substance underflow after the neutralization reaction processing.Use flocculation agent that fluorion is carried out the operation of further purifying treatment thereby replaced in the existing purification apparatus, reduced running cost, reduced the day-to-day operation capital fund.
According to the utility model, the built-in multiple support of oil-water separation tank is installed asphalt felt on the support, purpose is set is to adsorb commercial grease in the trade effluent.So the purpose that the neutralization reaction treating pond is set is in carbide slag slurries and trade effluent carry out and chemical reaction.The purpose that carbide slag emulsification pond is set is carbide slag is become slurries with the water mixing and emulsifying, is used for and trade effluent.
According to the utility model, the purpose that the slag stock pump is set is that the lifting of the waste water in the neutralization reaction treating pond is transported to membrane filtration wherein carries out the precision filtration treatment, in addition, setting is in line being transported in the silt deposit pond of fluorine-containing mud impurity after the film filter filtration around the purpose of property valve, the purpose that silt basin is set is to carry by film filter to be passed through around the fluorine-containing contamination precipitation thing of the in line mud shape of property valve, the purpose that surge pump is set is the fluorine-containing throw out pump drainage in the silt basin is transported in the chamber filter press, the purpose that chamber filter press is set is the mud of fluorine-containing impurity is suppressed into the rectangle dewatering cake under hydraulic drive, the purpose that the mud pond for recovering is set is to be used for concentrating the rectangle dewatering cake of placing by chamber filter press compression moulding, the purpose that air compressor is set is as the aeration source of the gas, the transmission that is used to accelerate neutralization reaction speed and accelerates fluorine-containing impurity.
The purpose that the utility model is provided with the 3rd T-valve is by air compressor, uses oil-free compressed air to open in property valve and startup surge pump with transmission mud impurity.
More preferably, according to the utility model, described film filter also is connected with four-way valve.
The purpose that four-way valve is set is the fluorine-containing trade effluent after handling through precision in the film filter by multi-direction transmission, and then carries out the subsequent disposal of multiple mode.
More preferably,, also comprise the impurity pond for recovering, described impurity pond for recovering next-door neighbour mud pond for recovering according to the utility model.The purpose that the impurity pond for recovering is set is to place the waste that produces behind the secondary water cycle treating pond purification filtering as concentrating, as the long-time scavenging material that the back lost efficacy etc. that uses, so that focus on.
More preferably, according to the utility model, described four-way valve one side is connected with secondary water cycle treating pond.
The purpose that secondary water cycle treating pond is set is the trade effluent in the film filter is carried out the accurate purifying treatment of secondary, thereby make the trade effluent after the purification satisfy the requirement (as greening irrigation, flushing lavatory) of water (being reuse water) in the life usefulness, thereby reach the saving purpose of recycling.
More preferably, according to the utility model, be connected in series with second T-valve with described four-way valve one side, described film filter is connected in parallel by second T-valve and described neutralization reaction treating pond.
So the purpose that is provided with is if fluorine content is excessive in the trade effluent, and film filter can't once filter it fully, below standard fluorine-containing trade effluent foldback can be returned the neutralization reaction treating pond and carry out the secondary neutralizing treatment.
More preferably, according to the utility model, described second T-valve first T-valve that is connected in series, described film filter is connected in parallel with described water collecting basin and carbide slag emulsification pond respectively by first T-valve.
First T-valve purpose that film filter is in parallel with water collecting basin and carbide slag emulsification pond is set herein to be, treated trade effluent foldback telegram in reply rock ballast emulsification pond after up to standard can be replenished to carry out the slurries emulsification of carbide slag as the water source, perhaps will handle trade effluent foldback after up to standard and return water collecting basin and be used for washing acid cleaning process steel work remained on surface acid solution, thereby reach the purpose of trade effluent circulation recycling.
More preferably, according to the utility model, described secondary water cycle treating pond is connected with soda acid foreign material proofing unit.The purpose that soda acid foreign material proofing unit is set be to detect trade effluent after secondary water cycle treating pond is handled whether reach life with in the requirement of water, as defective, then foldback returns secondary water cycle treating pond and carries out purifying treatment once more, until meet life with in till the water requirement.
More preferably, according to the utility model, water pond for recovering during described soda acid foreign material proofing unit is connected with by pipeline.
The purpose that the water pond for recovering is set be to store through secondary water cycle treating pond dispose and through qualified life that soda acid foreign material proofing unit detects with in water, to reach the purpose of taking at any time.
By the aforesaid purification apparatus that is used for fluorine-containing trade effluent of the present utility model, it is reasonable to have reached technology, the device compact in design, occupation area of equipment is little, it is few to build infusion of financial resources, running cost is low, easy and simple to handle, it is convenient to safeguard, the purpose that the Industrial Wastewater Treatment amount is big, also can dispel simultaneously other metal ions in the trade effluent, by the clod after handling is suppressed processed, centrally dispose, reduce secondary pollution, satisfy national standard through the water index after the purifying treatment simultaneously, can carry out recycling, energy-conserving and environment-protective, and the water after handling through secondary-cleaned can do manual labour with in water use.
Description of drawings
Fig. 1 is existing fluorine-containing industrial waste water purifying processing flow chart.
Fig. 2 is a fluorine-containing industrial waste water purifying processing flow chart in the utility model.
Among Fig. 2,1, water collecting basin 2, flushed channel 3, oil-water separation tank 4, carbide slag emulsification pond 5, diaphragm valve 6, neutralization reaction treating pond 7, slag stock pump 8, film filter 9, first T-valve 10, second T-valve 11, the 3rd T-valve 12, four-way valve 13, secondary water cycle treating pond 14, soda acid and foreign material proofing unit 15, middle water pond for recovering 16, around property valve 17, silt basin 18, surge pump 19, air compressor 20, chamber filter press 21, mud pond for recovering 22, impurity pond for recovering.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
Embodiment
The mode of connection that is used for each device of fluorine-containing industrial waste water purifying treatment facility in the utility model is as follows:
Water collecting basin 1, flushed channel 2, oil-water separation tank 3, neutralization reaction treating pond 6, film filter 8, around property valve 16, silt basin 17, surge pump 18, chamber filter press 20 is linked in sequence successively by pipeline, carbide slag emulsification pond 4 is connected with neutralization reaction treating pond one side by diaphragm valve 5, chamber filter press 20 is connected with neutralization reaction treating pond 6 by pipeline, air compressor 19 is connected with neutralization reaction treating pond 6 by pipeline, air compressor 19, around property valve 16, surge pump 18 is the tee T connection by three ports that pipeline is connected to the 3rd T-valve 11, film filter 8 one ends connect four- way valve 12,12 1 ports of four-way valve connect second T-valve 10, a port by the pipeline and second T-valve 10 is connected in parallel film filter 8 and neutralization reaction treating pond formation loop, another port of second T-valve 10 connects first T-valve 9 by pipeline, two ports in addition of first T-valve 9 connect water collecting basin 1 and carbide slag emulsification pond 4 respectively by pipeline, and then form with film filter 8 and to be connected in parallel, a port of four-way valve 12 connects secondary water cycle treating pond 13 by pipeline, secondary water cycle treating pond 13 once is linked in sequence with soda acid and foreign material proofing unit 14 and middle water pond for recovering 115 by pipeline, impurity pond for recovering 22 next-door neighbour's mud pond for recoverings 21.
Wherein, surge pump 1 cover, model is PDZ02.BAP-GGG; Slag stock pump 3 covers, model is 100/SOC-AH; Film filter 1 cover, model is AUTO-43-NBP-GSP-LA, built-in 144 surface film filtration units; Around property valve 1 cover, model is GT-DN150; Chamber filter press 1 cover, model is XAZG60-160/1000U; Oil-water separation tank 1 cover is 3m * 3m * 2m rectangle form pool; Neutralization reaction pond 1 cover is 4m * 5m * 2.5m rectangle form pool; Carbide slag emulsification pond 1 cover is 4m * 5m * 2m rectangle form pool; Silt basin 1 cover is 3m * 3m * 2m rectangle form pool; Mud pond for recovering 1 cover is 2m * 2m * 1m rectangle form pool; Secondary water cycle treating pond 1 cover is 5m * 5m * 2.5m rectangle form pool; Middle water pond for recovering 1 cover is 5m * 5m * 3m rectangle form pool; Impurity pond for recovering 1 cover is 2m * 2m * 1m rectangle form pool.
The technical process that is used for fluorine-containing industrial waste water purifying processing in the utility model is as follows:
1, preparation carbide slag slurry: close diaphragm valve 5, carbide slag is required to drop into carbide slag emulsification pond 4 in proportion, it is standby to make carbide slag emulsification slurries;
2, oily water separation is handled: the fluorine-containing trade effluent that produces after the flushing steel work surface acid solution in the flushed channel 2 is sent into oil-water separation tank 3, grease by in the absorption of the asphalt felt in the oil-water separation tank 3 trade effluent enters the fluorine-containing trade effluent behind the filtration grease in the neutralization reaction pond 6 through pipeline;
3, neutralizing treatment: close slag stock pump 7, close first T-valve 9, second T-valve 10, the 3rd T-valve 11, close four-way valve 12, open diaphragm valve 5, carbide slag emulsion after the emulsification is injected neutralization reaction pond 6 by pipeline, and, be that fluorine-containing trade effluent and carbide slag emulsion carry out chemical reaction by diaphragm valve 5 control injection rates, be fast reaction speed, can carry out aeration, promptly open air compressor 19, oil-free compressed air is injected neutralization reaction treating pond 6;
4, purifying treatment: after treating that reaction finishes in the neutralization reaction treating pond 6, open slag stock pump 7, the closing condition that keeps first T-valve 9, second T-valve 10, the 3rd T-valve 11 and four-way valve 12 simultaneously, close diaphragm valve 5, close around property valve 16, to pump through the fluorine-containing trade effluent that contains microparticle and suspended substance underflow after the neutralizing treatment, and purify disposal by concentrated being transported in the film filter 8 of pipeline.During filtration, during turbid liquid (fluorine-containing trade effluent) process polytetrafluoroethylene film filter bag, clear liquid sees through the epicoele that polytetrafluoroethylene film enters film filter 8, and the solid matter that comprises in the liquid is trapped within PolytetrafluoroethylFilm Film, forms filter cake; Turbid liquid is earlier through the filter cake film surface, the nano sized particles that polytetrafluoroethylene film produces for the neutralization reaction that contains in the neutralization reaction treating pond is as 60% Calcium Fluoride (Fluorspan) below the 3 μ m, harmful ion such as chromium metal, nickel and saline pollution thing can dam to get off, and make the water after the filtration limpid; When the solids that is retained down forms certain thickness filter cake, filter cake can produce certain resistance to the processed waste water that is drawn into by slag stock pump 7, at this moment, film filter 8 just can send the back flushing signal, anti-clean filter cake and form anti-the cleaning, with filter cake all from polytetrafluoroethylene film filter bag surface removal; The filter cake that breaks away from the filter bag surface will be deposited on filter bottom, when sedimentary filter cake reaches a certain amount of, will promptly be discharged from film filter 8 bottoms.So filter with anti-the cleaning and hocket, move in circles, realize the continuous operation of film filter 8.
5, online detection: adopt proofing unit to carry out fluorine content and pH value detection through the trade effluent after film filter 8 purifying treatment, as meet national fluoride waste emission standard (concentration is lower than 10mg/L), can open four-way valve 12 discharges, perhaps make the four-way valve 12 and second T-valve 10 and first T-valve 9 form path, qualified fluorine-containing trade effluent is flowed back to carbide slag emulsification pond 4 and neutralization reaction treating pond 6 respectively to replenish institute's water requirement or to enter the usefulness of water collecting basin 1 for cleanup acid treatment post-flush steel surface acid solution, also can close first T-valve 9 and second T-valve 10, four-way valve 12 is communicated with secondary water cycle treating pond 13, qualified fluorine-containing trade effluent is sent into done in the secondary circulation water treating pond 13 to do water use in the life usefulness after the further accurate purifying treatment; If fluorine content and pH value do not meet national standard after testing, then close first T-valve 9, open second T-valve 10 and form path, underproof fluorine-containing trade effluent foldback is returned carry out the secondary neutralizing treatment in the neutralization reaction treating pond 6, meet discharging standards until it with four-way valve 12.
6, mud impurity is handled: open air compressor 19, the 3rd T-valve 11, start around property valve 16 by oil-free compressed air, the throw outs such as filter cake (mud impurity) that produce in the film filter 8 are entered in the silt basin 17 by pipeline, start surge pump 18 by oil-free compressed air then, mud impurity in the silt basin 18 is entered in the chamber filter press 20 by pipeline, mud impurity is pressed into dehydration rectangle clod in chamber filter press 20, wherein can be delivered to by pipeline and continues in the neutralization reaction treating pond 6 to handle by the solution of pressing mud to produce.Regularly handle the mud impurity that produces in the chamber filter press 20 and be positioned in the mud pond for recovering 21 and centrally dispose.
7, secondary-cleaned is handled: open four-way valve 12, close first T-valve 9 and second T-valve 10, the qualified trade effluent that produces after purifying treatment in the film filter 8 entered carry out secondary-cleaned in the secondary water cycle treating pond 13 and handle, and detect by soda acid and foreign material proofing unit 14, water used during water pond for recovering 15 was done to live and used during qualified trade effluent entered, underproof foldback returns secondary water cycle treating pond 13 and carries out purifying treatment once more, until qualified.Wherein, the impurity that produces in the secondary water cycle treating pond 13 can regularly deposit to impurity pond for recovering 22 to centrally dispose.
Index contrasted before the equipment that following table provides for employing the utility model was handled the back and handled fluorine-containing trade effluent.
Annotate: ★ represents and has the ten tons of left and right sides concentration when pickling tank damages sometimes is that 20% acid solution flows in the pickling tank of water treatment.
By as above operation steps, can finish purifying treatment to fluorine-containing trade effluent.The apparatus and process that is used for fluorine-containing industrial waste water purifying processing that the utility model provides is reasonable, the device compact in design, occupation area of equipment is little, it is few to build infusion of financial resources, running cost is low, easy and simple to handle, it is convenient to safeguard, the Industrial Wastewater Treatment amount is big, the suite of equipment that reduces secondary pollution and can carry out recycling to the water after the purifying treatment, and under the reaction times and pH value prerequisite that guarantee neutralization reaction, can handle continuously, dispose of wastewater fluoro-containing concentration wide ranges, can handle the waste water of lower concentration, also can handle the waste water of high density, reduce production costs, can reduce the waste water dis posal expense every year more than 700,000 yuan; Highly versatile, the fluorine-containing Industrial Wastewater Treatment to domestic metallurgy, mechanical field has certain application value.
Claims (8)
1. purification apparatus that is used for fluorine-containing trade effluent, comprise the water collecting basin (1) that is linked in sequence successively by pipeline, flushed channel (2), oil-water separation tank (3), neutralization reaction treating pond (6) and slag stock pump (7), carbide slag emulsification pond (4), diaphragm valve (5) is connected with described neutralization reaction treating pond (6) successively by pipeline, chamber filter press (20), air compressor (19) is connected with described neutralization reaction treating pond (6) by pipeline respectively, around property valve (16), silt basin (17), surge pump (18) is connected in series with described chamber filter press (20) successively by pipeline, described air compressor (19), be connected in parallel by the 3rd T-valve (11) around property valve (16) and surge pump (18), also comprise mud pond for recovering (21), it is characterized in that: be connected with film filter (8) by pipeline at described slag stock pump (7) with between property valve (16).
2. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 1 is characterized in that: described film filter (8) also is connected with four-way valve (12).
3. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 1 is characterized in that: also comprise impurity pond for recovering (22), described impurity pond for recovering (22) next-door neighbour mud pond for recovering (21).
4. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 2 is characterized in that: described four-way valve (12) one sides are connected with secondary water cycle treating pond (13).
5. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 2, it is characterized in that: be connected in series with second T-valve (10) with described four-way valve (12) one sides, described film filter (8) is connected in parallel by second T-valve (10) and described neutralization reaction treating pond (6).
6. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 5, it is characterized in that: described second T-valve (10) is connected in series with first T-valve (9), and described film filter (8) is connected in parallel with described water collecting basin (1) and carbide slag emulsification pond (4) respectively by first T-valve (9).
7. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 4 is characterized in that: described secondary water cycle treating pond (13) is connected with soda acid foreign material proofing unit (14).
8. a kind of purification apparatus that is used for fluorine-containing trade effluent according to claim 7 is characterized in that: water pond for recovering (15) during described soda acid foreign material proofing unit (14) is connected with by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429057U CN202046950U (en) | 2011-02-21 | 2011-02-21 | Purification treatment device for fluorine-containing industrial wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200429057U CN202046950U (en) | 2011-02-21 | 2011-02-21 | Purification treatment device for fluorine-containing industrial wastewater |
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| CN202046950U true CN202046950U (en) | 2011-11-23 |
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| CN2011200429057U Expired - Fee Related CN202046950U (en) | 2011-02-21 | 2011-02-21 | Purification treatment device for fluorine-containing industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
-
2011
- 2011-02-21 CN CN2011200429057U patent/CN202046950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746036A (en) * | 2017-03-15 | 2017-05-31 | 福建欣宇卫浴科技股份有限公司 | Stainless steel acid cleaning waste water processing system |
| CN106746036B (en) * | 2017-03-15 | 2024-01-05 | 福建希海环保科技有限公司 | Stainless steel pickling wastewater treatment system |
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Owner name: BAOSTEEL SPECIAL STEEL CO., LTD. Free format text: FORMER OWNER: BAOSHAN IRON + STEEL CO., LTD. Effective date: 20140115 |
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Free format text: CORRECT: ADDRESS; FROM: 201900 BAOSHAN, SHANGHAI TO: 200940 BAOSHAN, SHANGHAI |
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Effective date of registration: 20140115 Address after: 200940 Baoshan District aquatic Road, Shanghai, No. 1269 Patentee after: BAOSTEEL SPECIALSTEEL CO., LTD. Address before: 201900 Fujin Road, Shanghai, No. 885, No. Patentee before: Baoshan Iron & Steel Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111123 Termination date: 20200221 |
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| CF01 | Termination of patent right due to non-payment of annual fee |