CN201990554U - Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water - Google Patents
Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water Download PDFInfo
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- CN201990554U CN201990554U CN201120011914XU CN201120011914U CN201990554U CN 201990554 U CN201990554 U CN 201990554U CN 201120011914X U CN201120011914X U CN 201120011914XU CN 201120011914 U CN201120011914 U CN 201120011914U CN 201990554 U CN201990554 U CN 201990554U
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Abstract
The utility model relates to a recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water, which comprises a pretreatment device, an ultrafiltration membrane device and a cleaning-resistant reverse osmosis membrane device, wherein the pretreatment device comprises a waste water adjusting pool, a reaction pool communicated with the waste water adjusting pool through a water inlet pipe, a clarifying pool and a quartz sand filtering pool which are sequentially connected. The recycling system further comprises a chlorination device, a feeding device for feeding materials containing calcium ion into the reaction pool and a potential of hydrogen (pH) control device for controlling the pH value in the reaction pool. The feeding device comprises a feeder, a fluorinion on-line monitoring meter installed in the reaction pool and a control system for controlling the feeding volume of the feeder according to the detected fluorinion content. After being treated by the recycling system, the recycled water is stable and good in quality, conforms to and is superior to the leading indicators of GB5749-2006 Sanitary Standard for Drinking Water promulgated by the state, and can be primary pure water for industrial production.
Description
Technical field
The utility model relates to the system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of a kind of electronic industry.
Background technology
Along with the particularly development of integrated circuit (IC) chip industrial technology of electronic industrial technology, the electronic industry waste water particularly fluorine-containing nitrogen-containing wastewater of electronic industry is treated as an outstanding difficult problem in the water treatment field.Electronic industry has been used in procedure for producing usually as a large amount of chemical agents such as hydrofluoric acid, sulfuric acid, phosphoric acid, ammoniacal liquor, hydrochloric acid, organic solvents, to make the waste water of discharging contain a large amount of have the composition of pollution to surrounding enviroment, aggravated that China's water pollutes and the shortage of water resources situation sternly complete degree.
It is big that the fluorine-containing nitrogen-containing wastewater of electronic industry has the water yield, the pollutant component complexity, and contaminative is strong, and biodegradability is poor, characteristics such as total dissolved solidss salt (TDS), ammonia nitrogen and content of fluoride height.Electronic enterprise (integrated circuit (IC) chip enterprise) does not have ripe effectively treatment process to such waste water at present, after handling through simple defluorination, can only enter the municipal sewage plant and focus on generally speaking.Because such wastewater biodegradability poor (BOD/COD＜0.1), and because the limitation of municipal sewage plant's Technology, total nitrogen is often not up to standard in the water outlet, cause discharging the eutrophication of water body easily, particularly can not effectively remove and can only reduce concentration by dilution to some specific pollutants (such as fluorine).Face the ecotope that is on the rise, national requirements industrial enterprise must implement the principles and policies of " energy-saving and emission-reduction ", in to the water rich and influential family's of industrial enterprise environmental impact assessment reply except requiring discharged wastewater met the national standard, also explicitly call for waste water must reach certain reclamation rate, the more impossible realization of discharging that conventional treatment technology can not reduce pollutent effectively effectively reduces discharged waste water by wastewater regenerating and recycling, realizes recycling economy.Therefore, must in wastewater treatment process, improve treatment process, reduce the quantity discharged of pollutent to greatest extent, alleviate pollution, improve the regeneration rate of waste water simultaneously, the water resources of saves valuable surrounding enviroment.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, and the system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of a kind of electronic industry efficiently is provided.
For solving above technical problem, the utility model is taked following technical scheme:
The system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of a kind of electronic industry, content of fluoride ion is for being not less than 20mg/L in the fluorine-containing nitrogen-containing wastewater of described electronic industry, ammonia-nitrogen content is for being not less than 15mg/L, described system for regenerating and recycling comprises pretreatment unit, ultra-filtration membrane equipment, the reverse osmosis membrane of anti-cleaning equipment, wherein pretreatment unit comprises the wastewater equalization pond that connects successively, the reaction tank that is connected by water inlet pipe with wastewater equalization pond, settling pond, the quartz sand filter tank, described system for regenerating and recycling also comprises the chlorinating equipment that is used for adding to described reaction tank oxidizer containing chlorine, be used for adding the feeding device of material of calcium ions and the pH control device that is used to control waste water ph in the reaction tank to described reaction tank, described chlorinating equipment comprises chlorinating machine, the Controlling System that is installed in the ammonia nitrogen on-line monitoring instrument apparatus in the described reaction tank and adds the amount of oxidizer containing chlorine according to detected ammonia-nitrogen content control chlorinating machine; Described feeding device comprises charging machine, be installed in the described reaction tank fluorion on-line monitoring instrument and according to the Controlling System of detected content of fluoride ion control charging machine feeding quantity, described oxidizer containing chlorine is liquid state or gasiform Cl
2The material of described calcium ions is one or more the combination that is selected from calcium oxide, calcium hydroxide or the soluble calcium salt.
According to the utility model, described quartz sand filter tank is preferably the V-type filter tank.
According to further embodiment of the present utility model: described system for regenerating and recycling also comprises ozone contact tank and the activated carbon filter that is connected between quartz sand filter tank and the ultra-filtration membrane equipment, enters into ultra-filtration membrane equipment through ozone contact tank, activated carbon filter successively from the filterable water in quartz sand filter tank.Waste water is when the ozone contact tank, and the ring-type organonitrogen and the larger molecular organics that are mixed with in the waste water can be interrupted by ozone, and follow-up adsorbed and from waste water, remove by gac during through activated carbon filter.Therefore, the combination of ozone contact tank and activated carbon filter is as the isolating pretreatment unit of ultra-filtration membrane, and the film blockage problem that can effectively avoid ultra-filtration membrane to occur easily improves waste water treatment efficiency and reduces system operation cost.
According to the utility model, described system for regenerating and recycling also can further comprise the reverse osmosis membrane concentrating unit that is used for the dense water that the described reverse osmosis membrane of anti-cleaning equipment produces is carried out twice concentration, wherein, the reverse osmosis membrane concentrating unit adopts the reverse-osmosis membrane element of anti-the cleaning for the first time, and the reverse osmosis membrane concentrating unit adopts the seawater desalination reverse osmosis film for the second time.After twice reverse osmosis membrane concentrating unit processing, the dense water yield reduces, and can be disposed to dense water total system and handle or do further Treatment for Reuse; The water outlet that sees through film then can be used as regenerated recycle-water.Preferably, the utility model system for regenerating and recycling also comprises the vapo(u)rization system that is connected after the reverse osmosis membrane concentrating unit for the second time, its condensed water of handling reverse osmosis membrane concentrating unit discharge for the second time by evaporative condenser is converted into regenerated recycle-water, so, substantially, realize the zero release and the whole regenerations of waste water of waste water.The mud that vapo(u)rization system is discharged is after mummification is solid, and the mud cake that contains calcium component that becomes with settling pond discharging sludge press filtration mixes, and can be used as the good raw material of making the environmental protection fragment of brick.
Because the enforcement of above technical scheme, the utility model compared with prior art has following advantage:
The utility model can be efficiently, operation stably, removes ammonia nitrogen and fluorion in the waste water quickly and efficiently, reduces the quantity discharged of pollutent to greatest extent, alleviates the pollution to surrounding enviroment, improves the regeneration rate of waste water simultaneously, the water resources of saves valuable.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in more detail:
Fig. 1 is the structural representation of the system for regenerating and recycling of embodiment 1;
Fig. 2 is the structural representation of the system for regenerating and recycling of embodiment 2;
Wherein: 1, pretreatment unit; 10, wastewater equalization pond; 11, reaction tank; 12, settling pond; 13, quartz sand filter tank; 14, ozone contact tank; 15, activated carbon filter; 2, ultra-filtration membrane equipment; 3, the reverse osmosis membrane of anti-cleaning equipment; 4, reverse osmosis membrane concentrating unit for the first time; 5, reverse osmosis membrane concentrating unit for the second time; 6, vapo(u)rization system.
Embodiment
Embodiment 1
As shown in Figure 1, comprise the pretreatment unit 1 that connects successively, ultra-filtration membrane equipment 2, the reverse osmosis membrane of anti-cleaning equipment 3, reverse osmosis membrane concentrating unit 4, reverse osmosis concentrated compression apparatus 5 and vapo(u)rization system 6 for the second time for the first time according to the system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of electronic industry of present embodiment.Wherein, pretreatment unit 1 reaction tank 11, settling pond 12, the quartz sand filter tank 13 that comprise successively the wastewater equalization pond 10 that connects, be connected by water inlet pipe with wastewater equalization pond 10.In addition, though do not show among the figure, this routine described system for regenerating and recycling also comprise be used for to reaction tank 11 add oxidizer containing chlorines chlorinating equipment, be used for adding the feeding device of material of calcium ions and the pH control device that is used to control waste water ph in the reaction tank, the Controlling System that described chlorinating equipment comprises chlorinating machine, is installed in the ammonia nitrogen on-line monitoring instrument apparatus in the described reaction tank 11 and adds the amount of oxidizer containing chlorine according to detected ammonia-nitrogen content control chlorinating machine to described reaction tank 11; Described feeding device comprises charging machine, be installed in the described reaction tank fluorion on-line monitoring instrument and according to the Controlling System of detected content of fluoride ion control charging machine feeding quantity, described oxidizer containing chlorine is liquid state or gasiform Cl
2The material of described calcium ions is one or more the combination that is selected from calcium oxide, calcium hydroxide or the soluble calcium salt.
Take the principle of work of system for regenerating and recycling of present embodiment as follows: after making waste water carry out the equilibrium of the water quality and the water yield through wastewater equalization pond 10 successively, to enter in the reaction tank 11.In reaction tank 11, add Cl respectively by chlorinating machine and feeding device
2Reach calcium hydroxide and calcium chloride and remove ammonia nitrogen and defluorination, add for example flocculation such as polymerize aluminum chloride, polyacrylamide of coagulating agent again, afterwards, the water outlet gravity flow of reaction tank enters into settling pond 12, precipitate 1～2 hour, the most of fluorochemical in the water inlet, suspended substance and partial organic substances precipitation form mud discharging and remove.The gravity flow of settling pond supernatant liquid enters the quartz sand filter tank 13 of the quartz sand filter media layer of uniform grading, by failing settled fine suspension and gelatinoid in the physical filtering effect removal settling pond.Afterwards, with waste water process ultra-filtration membrane equipment 2 successively, the reverse osmosis membrane of anti-cleaning concentrating unit 3, reverse osmosis concentrated compression apparatus 3 and reverse osmosis membrane concentrating unit 4 processing for the second time for the first time, see through the water outlet of film during this time as regenerated recycle-water, from the second time dense water that reverse osmosis membrane concentrating unit 4 comes out enter into vapo(u)rization system 6, make up through evaporative condenser and turn to regenerated recycle-water.The mud that vapo(u)rization system is discharged is after mummification is solid, and the mud cake that contains calcium component that becomes with settling pond discharging sludge press filtration mixes, and can be used as the good raw material of making the environmental protection fragment of brick.
Embodiment 2
As shown in Figure 2, substantially with embodiment 1, different is according to the system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of electronic industry of present embodiment, and pretreatment unit 1 also comprises ozone contact tank 14 and the activated carbon filter 15 that is connected after the V-type quartz sand filter tank 13.The system for regenerating and recycling of this kind structure is particularly suitable for containing the processing of the electronic industry waste water of ring-type organonitrogen and larger molecular organics.Facts have proved, after the waste water that contains ring-type organonitrogen and larger molecular organics is through ozone contact tank contact processing, the ring of ring-type organonitrogen or the long-chain of larger molecular organics can be interrupted transfers small molecules to, thereby is easy to remove by follow-up charcoal absorption pond absorption.So, can effectively avoid ring-type organonitrogen and larger molecular organics to cause the blockage problem of subsequent film separation system, the assurance system is smooth, efficient to be moved.
The reuse water water quality that the processing of adopting the utility model to carry out the fluorine-containing nitrogen-containing wastewater of electronic industry obtains reaches fully even is better than above-mentioned " drinking water sanitary standard " greatly, wherein the TDS concentration of reuse water is lower, can be used as the primary pure water of electronic industry enterprise production usefulness fully.
More than the utility model has been done detailed description; its purpose is to allow the personage that is familiar with this art can understand content of the present utility model and is implemented; can not limit protection domain of the present utility model with this; all equivalences of doing according to spirit of the present utility model change or modify, and all should be encompassed in the protection domain of the present utility model.
Claims (5)
1. the system for regenerating and recycling of the fluorine-containing nitrogen-containing wastewater of electronic industry, it is characterized in that: described system for regenerating and recycling comprises pretreatment unit, ultra-filtration membrane equipment, the reverse osmosis membrane of anti-cleaning equipment, wherein said pretreatment unit comprises the wastewater equalization pond that connects successively, the reaction tank that is connected by water inlet pipe with wastewater equalization pond, settling pond, the quartz sand filter tank, described system for regenerating and recycling also comprises the chlorinating equipment that is used for adding to described reaction tank oxidizer containing chlorine, be used for adding the feeding device of material of calcium ions and the pH control device that is used to control waste water ph in the reaction tank to described reaction tank, described chlorinating equipment comprises chlorinating machine, the Controlling System that is installed in the ammonia nitrogen on-line monitoring instrument apparatus in the described reaction tank and adds the amount of oxidizer containing chlorine according to detected ammonia-nitrogen content control chlorinating machine; Described feeding device comprises charging machine, be installed in the described reaction tank fluorion on-line monitoring instrument and according to the Controlling System of detected content of fluoride ion control charging machine feeding quantity, described oxidizer containing chlorine is liquid state or gasiform Cl
2, the material of described calcium ions is to be selected from a kind of in calcium oxide, calcium hydroxide or the soluble calcium salt.
2. system for regenerating and recycling according to claim 1 is characterized in that: described quartz sand filter tank is the V-type filter tank.
3. system for regenerating and recycling according to claim 1, it is characterized in that: described system for regenerating and recycling also comprises ozone contact tank and the activated carbon filter that is connected between quartz sand filter tank and the ultra-filtration membrane equipment, enters into ultra-filtration membrane equipment through ozone contact tank, activated carbon filter successively from the filterable water in quartz sand filter tank.
4. system for regenerating and recycling according to claim 1, it is characterized in that: described system for regenerating and recycling also comprises the reverse osmosis membrane concentrating unit that is used for the dense water that the described reverse osmosis membrane of anti-cleaning equipment produces is carried out twice concentration, wherein, the reverse osmosis membrane concentrating unit adopts the reverse-osmosis membrane element of anti-the cleaning for the first time, and the reverse osmosis membrane concentrating unit adopts the seawater desalination reverse osmosis film for the second time.
5. system for regenerating and recycling according to claim 4, it is characterized in that: described system for regenerating and recycling also comprises the vapo(u)rization system that is connected after described second time of the reverse osmosis membrane concentrating unit, and it is handled condensed water that reverse osmosis membrane concentrating unit for the second time discharges by evaporative condenser and is converted into regenerated recycle-water.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120011914XU CN201990554U (en) | 2011-01-17 | 2011-01-17 | Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water |
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| CN201120011914XU CN201990554U (en) | 2011-01-17 | 2011-01-17 | Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water |
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| CN201990554U true CN201990554U (en) | 2011-09-28 |
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| CN201120011914XU Expired - Lifetime CN201990554U (en) | 2011-01-17 | 2011-01-17 | Recycling system of electronic-industry fluorine-containing and ammonia-nitrogen-containing waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775001A (en) * | 2012-08-24 | 2012-11-14 | 云南江豪科技有限公司 | Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water |
| CN103936218A (en) * | 2014-04-21 | 2014-07-23 | 江苏省环境科学研究院 | Method for realizing approximate zero discharge of high-fluorine-content and high-nitrogen-content battery production waste water in photovoltaic industry |
-
2011
- 2011-01-17 CN CN201120011914XU patent/CN201990554U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102775001A (en) * | 2012-08-24 | 2012-11-14 | 云南江豪科技有限公司 | Method for treating ultrahigh-hardness and ultrahigh-conductivity waste water |
| CN103936218A (en) * | 2014-04-21 | 2014-07-23 | 江苏省环境科学研究院 | Method for realizing approximate zero discharge of high-fluorine-content and high-nitrogen-content battery production waste water in photovoltaic industry |
| CN103936218B (en) * | 2014-04-21 | 2015-12-02 | 江苏省环境科学研究院 | The high fluorine-containing nitrogenous wastewater from battery production of a kind of photovoltaic industry becomes the method for zero release |
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Granted publication date: 20110928 |
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