CN104193076A - Device and method for removing nitrogen in underground water - Google Patents
Device and method for removing nitrogen in underground water Download PDFInfo
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- CN104193076A CN104193076A CN201410357485.XA CN201410357485A CN104193076A CN 104193076 A CN104193076 A CN 104193076A CN 201410357485 A CN201410357485 A CN 201410357485A CN 104193076 A CN104193076 A CN 104193076A
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Abstract
The invention discloses a device for removing nitrogen in underground water. The device is mainly composed of two parts, i.e., an underground water lifting system and a centralized nitrification and denitrification system. Furthermore, the invention discloses a method for removing nitrogen in underground water through the device. According to the device which is constructed through such ways as water and gas separation, plants, microorganisms and nano aeration, nitrification and denitrification treatment of the nitrogen is implemented in a centralized and classified manner; an effect of rapidly removing various nitrogen in the underground water such as nitric nitrogen, nitrite nitrogen, ammonia nitrogen and organic nitrogen is realized, and an emergent underground pollution status caused by exceeding nitrogen indexes is avoided.
Description
Technical field
The present invention relates to a kind of device that removes nitrogen in underground water.
The invention still further relates to the method for utilizing said apparatus to remove nitrogen in underground water.
Background technology
Ammonia nitrogen enters human body and synthetic nitroso compound, and nitric nitrogen can be also poisonous nitrite nitrogen by microorganism direct-reduction in human body, so human body excess intake nitric nitrogen easily makes organ generation canceration.Groundwater Nitrate-nitrogen is polluted the generally attention that causes already United Nations and developed country, wherein ammonia nitrogen is mainly derived from protein decomposition generation, and nitric nitrogen in underground water is mainly used chemical fertilizer from farmland, the microorganism nitrification of ammonia nitrogen in dirty filling and soil, nitric nitrogen very easily enters underground water with soil free water leaching, and human body is had to certain harm.When nitric nitrogen exceedes 500mg/L in tap water, can cause gastrointestinal disorders, stimulate the slime layer of bladder to occur frequent micturition and symptom of diarrhea, therefore national drinking water standard has been done strict regulation to ammonia nitrogen and nitric nitrogen index.And in underground water ammonia nitrogen, nitrate nitrogen content to exceed the area of drinking water standard a lot, endemic illness is also supervened, for improving the quality of tap water, the effective technology of ammonia nitrogen, nitric nitrogen in underground water in need of immediate treatment.
Biology in soil ecosystem has important effect to the growth and decline of its nitrate nitrogen, and wherein nitrification and denitrification bacterium is one of important biomolecule factor affecting nitrate in groundwater concentration.
Summary of the invention
The object of this invention is to provide a kind of device that removes nitrogen in underground water.
Another object of the present invention is to provide a kind of method of utilizing said apparatus to remove nitrogen in underground water.
For achieving the above object, the device that removes nitrogen in underground water provided by the invention, is mainly made up of underground water lifting system and concentrated nitration denitrification system two portions; Wherein:
Underground water lifting system, is to be provided with rotatable filtering net at the inwall of a winding shaft, and filtering net is provided with pin type swabbing pig, and there is small crotch at the tip that pin type swabbing pig probes into filter mesh; Promote water pump by underground water from winding shaft inner filtration and be promoted to the water distributing pipe of concentrated nitration denitrification system;
Water distributing pipe is a perforation pvc pipe, and pipe external parcel one deck geotextile prevents from stopping up, and geotextile external parcel one deck iron carbon filler, has micro-electrolytic functional;
The agent of concentrated nitration denitrification system surrounding injection soil compaction is as the partition wall of watertight layer; The inside of concentrated nitration denitrification system is respectively the nitrated layer of nanometer aeration and concentrated denitrification layer from top to bottom, between the nitrated layer of nanometer aeration and concentrated denitrification layer, adopt and do and isolate with the ceramic plate of pore, on ceramic plate, be enclosed with zeroth order Nanoscale Iron; The nitrated layer of nanometer aeration bottom is provided with more than one nanometer aeration head;
Weighting material in the nitrated layer of nanometer aeration is the mixture of the red mud molecular sieve of gac, doped nano titanium dioxide, and the bottom of mixture is Fu Luoli diatomite;
Weighting material in concentrated denitrification layer is the mixture of gac and mesopore molecular sieve;
In concentrated denitrification layer, be provided with the on-line automatic control device of COD pressure, the on-line automatic control device of pressure and air water separator;
The surface plantation of concentrated nitration denitrification system has plant.
Described device, wherein, the nanometer aeration head in the nitrated layer of nanometer aeration connects nanometer aeration machine.
Described device, wherein, the particle diameter of the red mud molecular sieve of gac, Fu Luoli diatomite and doped nano titanium dioxide in the nitrated layer of nanometer aeration is 2mm-50mm.
Described device, wherein, the gac in concentrated denitrification layer and the particle diameter of mesopore molecular sieve are 2mm-5mm.
Described device, wherein, plant selects Spiked Loosestrife and power is colored again, and plantation ratio is 1:2, has landscape effect ensureing assimilation effect when.
The method of utilizing said apparatus to remove nitrogen in underground water provided by the invention:
Promoting water pump enters underground water in the nitrated layer of nanometer aeration from winding shaft inner filtration the water distributing pipe that is promoted to concentrated nitration denitrification system, organonitrogen and the ammonia nitrogen in charcoal absorption underground water, and will be oxidized to nitric nitrogen under the effect of nanometer aeration, follow larger molecular organics in this process underground water to be converted into small organic molecule, as the carbon source of denitrification layer; The Fu Luoli diatomite interception larger molecular organics of bottom, jointly controls the amount of larger molecular organics in concentrated denitrification layer with nanometer aeration machine, ensures that concentrated denitrification layer carbon source remains in certain concentration range;
The underground water liquid of processing through the nitrated layer of nanometer aeration directly sees through ceramic plate and enters concentrated denitrification layer, gas is isolated out, prevent that oxygen and bubble from entering concentrated denitrification layer, absolute anaerobic environment in guarantee system, zeroth order Nanoscale Iron on ceramic plate is caught heavy metal for net simultaneously, prevent the too high generation bio-toxicity of heavy metal concentration, suppress the growth of denitrifying bacteria in concentrated denitrification layer;
Enter nitric nitrogen in the underground water of concentrated denitrification layer and be adsorbed, along with the forward of anti-nitration reaction carries out continuous slowly-releasing, prevent because the too fast nitre nitrogen of flow velocity directly enters in underground water;
The pressure of the pressure medium-sized denitrification layer of on-line automatic control device measuring set inside, when denitrification process produces too high, the pressure of nitrogen amount when excessive, extracts nitrogen out by air water separator, and the forward of driving a reaction carries out;
The inside COD changing conditions of the medium-sized denitrification layer of the on-line automatic control device measuring set of COD, controls aerator aeration time automatically by COD value.
Described method, wherein, the on-line automatic control device of COD during lower than 75mg/L, regulates nanometer aeration machine aeration rate at 0.2-0.5 at COD; COD during higher than 75mg/L, regulates nanometer aeration machine aeration rate higher than 0.5.
Described method, wherein, the nanometer aeration head air inlet in the nitrated layer of nanometer aeration is O
2.
The device that the present invention utilizes the modes such as aqueous vapor separation method, plant, microorganism, nanometer aeration to build, the nitration denitrification processing of nitrogen is carried out in concentrated classification, have faster removal effect for nitric nitrogen, nitrite nitrogen, ammonia nitrogen, the various nitrogens of organonitrogen in underground water, avoid in time due to Nitrogen index exceed standard cause the urgent pollution situation of underground water.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram of the present invention.
Primary clustering nomenclature in accompanying drawing:
1-partition wall; 2-plant; 3-alkalescence injection device; 4-promotes water pump; 5-winding shaft; 6-water distributing pipe; 7-ceramic plate; 8-filtering net; 9-concentrated denitrification layer; 10-extracts pipe out; The nitrated layer of 11-nanometer aeration; 12-nanometer aeration head; The on-line automatic control device of 13-COD; The on-line automatic control device of 14-pressure; 15-air water separator;
Embodiment
Elaborate below in conjunction with accompanying drawing.It should be noted that, mention in the following description left and right, upper and lower etc. be to be all as the criterion with direction shown in the drawings.
Refer to Fig. 1, the device that removes nitrogen in underground water provided by the invention, is mainly made up of underground water lifting system, concentrated nitration denitrification system two portions.
Wherein, the primary structure of underground water lifting system is winding shaft 5, in winding shaft 5, be provided with rotatable filtering net 8, under the suction function that promotes water pump 4, underground water be promoted to sea line place, original place, in lifting process, groundwater flow filters so that next step processing through filter screen 8; For preventing that filtering net 8 from stopping up, pin type swabbing pig is set especially, there is small crotch at the tip that swabbing pig probes into filter mesh simultaneously, prevents its obstruction for cleaning filtering net.
The water outlet of underground water lifting system is connected to the water distributing pipe 6 of concentrated nitration denitrification system, and water distributing pipe 6 is a perforation pvc pipe, and pipe external parcel one deck geotextile prevents from stopping up, and geotextile external parcel one deck iron carbon filler, has micro-electrolytic functional.
The surrounding injection soil compaction agent of concentrated nitration denitrification system is as the partition wall 1 of watertight layer, and the inside of concentrated nitration denitrification system is respectively the nitrated layer 11 of nanometer aeration and concentrated denitrification layer 9 from top to bottom.The nitrated bed thickness 0.7m of nanometer aeration, gac, the red mud molecular sieve of doped nano titanium dioxide and the Fu Luoli diatomite of bottom by particle diameter 2mm-50mm form, the nitrated layer of nanometer aeration bottom is laid with nanometer aeration head 12 intermittent aerations, the nano bubble that nanometer aeration head 12 exhales has special property, fine and closely woven being dispersed in pending underground water under physical action; Gac is for attached ground water organonitrogen and ammonia nitrogen, under the effect of nanometer aeration, produce hydroxy radical qiao and be oxidized to nitric nitrogen, follow larger molecular organics in this process underground water to be converted into small organic molecule, can be used as the carbon source of concentrating denitrification layer 9, the diatomaceous effect of Fu Luoli of bottom is interception larger molecular organics, jointly control the amount of larger molecular organics in concentrated denitrification layer with nanometer aeration machine, ensure that concentrated denitrification layer carbon source remains on within the scope of finite concentration; Nano titanium oxide provides hole or free negative ion, or produce the collaborative micro-electrolytic effect of of short duration advanced oxidation.Between the nitrated layer of nanometer aeration 11 and concentrated denitrification layer 9 and concentrated denitrification layer bottom used the ceramic plate 7 of pore to do to isolate, this capillary ceramic plate 7 has constant less chemically reactive and evenly intensive little pore distribution, and the characteristic of low absorption high alumina content and suitable pressure in bubbles (1bar is to 100kpa), liquid can directly see through by this ceramic plate 7, and gas or bubble are isolated out from liquid.Prevent that oxygen and bubble from entering concentrated denitrification layer 9, in guarantee system, absolute anaerobic environment wraps up zeroth order Nanoscale Iron in ceramic plate 7 simultaneously, catches heavy metal for net, prevent the too high generation bio-toxicity of heavy metal concentration, suppress the growth of denitrifying bacteria in concentrated denitrification layer.
Concentrated denitrification bed thickness 0.8m, gac by particle diameter 2mm-5mm mixes and forms with mesopore molecular sieve, making to enter nitric nitrogen in the pending underground water of concentrated denitrification layer was adsorbed by moment, along with the forward of anti-nitration reaction carries out continuous slowly-releasing, prevent because the too fast nitre nitrogen of flow velocity directly enters in underground water;
In concentrated denitrification layer, be provided with the on-line automatic control device 14 of pressure to measure internal pressure, when denitrification process produces too high, the pressure of nitrogen amount when excessive, automatically control air water separator 15 and extract nitrogen out, the forward of driving a reaction carries out.The COD changing conditions of the on-line automatic control device medium-sized denitrification layer of 13 measuring set of the COD inside arranging in concentrated denitrification layer, automatically control aerator aeration time by COD value, when the COD in concentrated denitrification layer is during lower than 75mg/L, regulate nanometer aeration machine aeration rate to reach and clear up effect at 0.2-0.5; When COD is during higher than 75mg/L, regulate nanometer aeration machine aeration rate to reach oxidation effect higher than 0.5.
According to one embodiment of present invention, in the sewage by processing of the present invention, nitrite nitrogen, nitric nitrogen 100% are removed, and organonitrogen reduces by 99%, and effluent quality transparency is high.
Claims (8)
1. remove a device for nitrogen in underground water, mainly formed by underground water lifting system and concentrated nitration denitrification system two portions; Wherein:
Underground water lifting system, is to be provided with rotatable filtering net at the inwall of a winding shaft, and filtering net is provided with pin type swabbing pig, and there is small crotch at the tip that pin type swabbing pig probes into filter mesh; Promote water pump by underground water from winding shaft inner filtration and be promoted to the water distributing pipe of concentrated nitration denitrification system;
Water distributing pipe is a perforation pvc pipe, and pipe external parcel one deck geotextile prevents from stopping up, and geotextile external parcel one deck iron carbon filler, has micro-electrolytic functional;
The agent of concentrated nitration denitrification system surrounding injection soil compaction is as the partition wall of watertight layer; The inside of concentrated nitration denitrification system is respectively the nitrated layer of nanometer aeration and concentrated denitrification layer from top to bottom, between the nitrated layer of nanometer aeration and concentrated denitrification layer, adopt and do and isolate with the ceramic plate of pore, on ceramic plate, be enclosed with zeroth order Nanoscale Iron; The nitrated layer of nanometer aeration bottom is provided with more than one nanometer aeration head;
Weighting material in the nitrated layer of nanometer aeration is the mixture of the red mud molecular sieve of gac, doped nano titanium dioxide, and the bottom of mixture is Fu Luoli diatomite;
Weighting material in concentrated denitrification layer is the mixture of gac and mesopore molecular sieve;
In concentrated denitrification layer, be provided with the on-line automatic control device of COD pressure, the on-line automatic control device of pressure and air water separator;
The surface plantation of concentrated nitration denitrification system has plant.
2. device according to claim 1, wherein, the nanometer aeration head in the nitrated layer of nanometer aeration connects nanometer aeration machine.
3. device according to claim 1, wherein, the particle diameter of the red mud molecular sieve of gac, Fu Luoli diatomite and doped nano titanium dioxide in the nitrated layer of nanometer aeration is 2mm-50mm.
4. device according to claim 1, wherein, the gac in concentrated denitrification layer and the particle diameter of mesopore molecular sieve are 2mm-5mm.
5. device according to claim 1, wherein, plant selects Spiked Loosestrife and power is colored again, and plantation ratio is 1:2, has landscape effect ensureing assimilation effect when.
6. utilize device described in claim 1 to remove the method for nitrogen in underground water:
Promoting water pump enters underground water in the nitrated layer of nanometer aeration from winding shaft inner filtration the water distributing pipe that is promoted to concentrated nitration denitrification system, organonitrogen and the ammonia nitrogen in charcoal absorption underground water, and will be oxidized to nitric nitrogen under the effect of nanometer aeration, follow larger molecular organics in this process underground water to be converted into small organic molecule, as the carbon source of denitrification layer; The Fu Luoli diatomite interception larger molecular organics of bottom, jointly controls the amount of larger molecular organics in concentrated denitrification layer with nanometer aeration machine, ensures that concentrated denitrification layer carbon source remains in certain concentration range;
The underground water liquid of processing through the nitrated layer of nanometer aeration directly sees through ceramic plate and enters concentrated denitrification layer, gas is isolated out, prevent that oxygen and bubble from entering concentrated denitrification layer, absolute anaerobic environment in guarantee system, zeroth order Nanoscale Iron on ceramic plate is caught heavy metal for net simultaneously, prevent the too high generation bio-toxicity of heavy metal concentration, suppress the growth of denitrifying bacteria in concentrated denitrification layer;
Enter nitric nitrogen in the underground water of concentrated denitrification layer and be adsorbed, along with the forward of anti-nitration reaction carries out continuous slowly-releasing, prevent because the too fast nitre nitrogen of flow velocity directly enters in underground water;
The pressure of the pressure medium-sized denitrification layer of on-line automatic control device measuring set inside, when denitrification process produces too high, the pressure of nitrogen amount when excessive, extracts nitrogen out by air water separator, and the forward of driving a reaction carries out;
The inside COD changing conditions of the medium-sized denitrification layer of the on-line automatic control device measuring set of COD, controls aerator aeration time automatically by COD value.
7. method according to claim 6, wherein, the on-line automatic control device of COD during lower than 75mg/L, regulates nanometer aeration machine aeration rate at 0.2-0.5 at COD; COD during higher than 75mg/L, regulates nanometer aeration machine aeration rate higher than 0.5.
8. method according to claim 6, wherein, the nanometer aeration head air inlet in the nitrated layer of nanometer aeration is O
2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410357485.XA CN104193076B (en) | 2014-07-25 | 2014-07-25 | A kind of method that removes the device of nitrogen in underground water and remove nitrogen in underground water |
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| CN201410357485.XA CN104193076B (en) | 2014-07-25 | 2014-07-25 | A kind of method that removes the device of nitrogen in underground water and remove nitrogen in underground water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105152393A (en) * | 2015-08-19 | 2015-12-16 | 中国环境科学研究院 | Laboratory simulation device for groundwater pollution remediation and usage method of laboratory simulation device |
| CN107540159A (en) * | 2017-09-29 | 2018-01-05 | 路域生态工程有限公司 | A kind of system and method for enhanced type filtration system treatment of sewage in expressway service |
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| CN102285739A (en) * | 2010-06-17 | 2011-12-21 | 中国环境科学研究院 | BCMB (Buffering Circulating MediaBiological Bed) treatment method for high-concentration toxic organic waste water |
| CN203474573U (en) * | 2013-09-18 | 2014-03-12 | 中国轻工业武汉设计工程有限责任公司 | Underground water multiple-stage treatment storage device |
| CN103896436A (en) * | 2014-04-22 | 2014-07-02 | 上海理工大学 | Water depth treatment technology using filter material synergistically modified with ultraviolet (UV) and ozone and equipment thereof |
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2014
- 2014-07-25 CN CN201410357485.XA patent/CN104193076B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008093500A (en) * | 2006-10-06 | 2008-04-24 | Nippo Corporation:Kk | Simultaneous cleaning method and apparatus of polluted soil and groundwater |
| JP2011120992A (en) * | 2009-12-09 | 2011-06-23 | Goko Seisakusho Co Ltd | Apparatus for purifying excreta or the like |
| CN102285739A (en) * | 2010-06-17 | 2011-12-21 | 中国环境科学研究院 | BCMB (Buffering Circulating MediaBiological Bed) treatment method for high-concentration toxic organic waste water |
| CN203474573U (en) * | 2013-09-18 | 2014-03-12 | 中国轻工业武汉设计工程有限责任公司 | Underground water multiple-stage treatment storage device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105152393A (en) * | 2015-08-19 | 2015-12-16 | 中国环境科学研究院 | Laboratory simulation device for groundwater pollution remediation and usage method of laboratory simulation device |
| CN105152393B (en) * | 2015-08-19 | 2017-07-11 | 中国环境科学研究院 | A kind of laboratory simulation device repaired for underground water pollution and its application method |
| CN107540159A (en) * | 2017-09-29 | 2018-01-05 | 路域生态工程有限公司 | A kind of system and method for enhanced type filtration system treatment of sewage in expressway service |
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Inventor after: Wang Lei Inventor after: Xi Beidou Inventor after: Li Yingjun Inventor after: Zhang Lieyu Inventor after: Yang Jinjin Inventor after: He Xiaosong Inventor after: Huang Caihong Inventor after: Wang Lijun Inventor after: Wang Jinsheng Inventor before: Wang Lei Inventor before: Xi Beidou Inventor before: Li Yingjun Inventor before: Zhang Lieyu Inventor before: Su Jing Inventor before: He Xiaosong Inventor before: Wang Lijun Inventor before: Gao Rutai |
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