CN203333376U - Integrated nitrification and nitrate nitrogen enrichment system - Google Patents
Integrated nitrification and nitrate nitrogen enrichment system Download PDFInfo
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- CN203333376U CN203333376U CN201320383379XU CN201320383379U CN203333376U CN 203333376 U CN203333376 U CN 203333376U CN 201320383379X U CN201320383379X U CN 201320383379XU CN 201320383379 U CN201320383379 U CN 201320383379U CN 203333376 U CN203333376 U CN 203333376U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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Abstract
The utility model discloses an integrated nitrification and nitrate nitrogen enrichment system, and belongs to the field of sewage treatment technology. The system comprises an open nitrate nitrogen separator, a membrane assembly A, an aeration head and an electrode, an air pump, an air flowmeter, an air channel pipeline, a water outlet peristaltic pump, a pressure gauge, a water inlet pump, a water inlet pipe, a water outlet pipe, a power supply, a conductor and a time relay, and the membrane assembly A, the aeration head and the electrode are arranged in the nitrate nitrogen separator; a water outlet of the membrane assembly A is connected with the water outlet pipe, the pressure gauge and the water outlet peristaltic pump sequentially and is controlled by the time relay; the water inlet pump is controlled by the time relay; the aeration head is connected with the air channel pipeline, the air flowmeter and the air pump sequentially; the aeration head is positioned at the lower part of the membrane assembly A; two poles of the electrode are respectively connected with the power supply by the conductor and arranged at two sides of the membrane assembly A; the membrane assembly A consists of an anion exchange membrane, one of an ultrafiltration membrane or a micro-filtration membrane, and a supporting plate with diversion trenches and holes. The system can convert ammonia nitrogen in waste water into nitrate nitrogen in a single treatment unit and conduct the nitrate nitrogen enrichment, thus being simple in structure.
Description
Technical field
The utility model belongs to technical field of sewage, relates in particular to the nitrated and nitre nitrogen enrichment system of a kind of integral type.
Background technology
The body eutrophication problem becomes increasingly conspicuous, and has been had a strong impact in recent years resident's daily life by the series of problems of its initiation.Nitrogen phosphorus is the principal element that causes body eutrophication, and therefore, in sewage, nitrogen phosphorus qualified discharge just seems particularly important.The low C/N ratio wastewater of processing normally adds organic carbon source and realizes efficient denitrification, yet this consumed limited organic resource, increased again working cost.
The research discovery, in waste water, ammonia nitrogen very easily is converted into nitre nitrogen under aerobic activated sludge (being mainly nitrobacteria) effect, and then realizes ammonia nitrogen removal.Therefore, process low C/N ratio wastewater, at first can use correlation technique means (as membrane module A) by ammonia nitrogen in waste water and separating organic matters, then ammonia nitrogen is transported to the nitrated stage, organism is to the denitrification stage, ammonia nitrogen is under the nitrobacteria effect, be converted into nitre nitrogen, and carry out the enrichment of nitre nitrogen, for other subsequent disposal (denitrification), and then realize the removal of nitrogen, wherein the enrichment of nitre nitrogen will seem very important.
At present, NO
3 -the main method of separation and concentration has absorption and the methods such as ion exchange method, membrane absorption method and electrodialysis.Absorption and ion exchange method (as zeolite, ion exchange resin), can separate concentrated NO
3 -, but exist loading capacity limited, and regeneration frequency is high, and chemical regeneration easily causes secondary pollution problems, and therefore, the application great majority of zeolite process denitrogenation at present are for nitrogenous not high water bodys such as micro-polluted riverway water, landscape water, second pond water outlets.Electrodialysis (ED) method often is used to the NO of waste water
3 -enrichment, the method has less energy-consumption, the advantages such as high-level efficiency, but electrodialysis has certain limitation, only allow specific ion to see through film, and water molecules can not see through, and when film pollutes, film cleaning difficulty is very large.
The utility model content
The purpose of this utility model is for existing low C/N ratio wastewater treatment process and the NO of processing
3 -the deficiency of method for separating and concentrating and defect, method and the device of the nitrated and nitre nitrogen enrichment of a kind of integral type combined films bio-reactor are provided, the method and device can be in single processing unit to waste water in mineralized nitrogen be nitre nitrogen and carry out the enrichment of nitre nitrogen, with for subsequent disposal; And apparatus structure is simple, be convenient to the actually operating operation.
The purpose of this utility model is achieved through the following technical solutions:
Nitrated and the nitre nitrogen enrichment system of a kind of integral type, it is characterized in that: this device comprises uncovered nitre nitrogen separator, is placed on membrane module A, aeration head and electrode in nitre nitrogen separator, air pump, gas meter, gas circuit pipeline, the water outlet peristaltic pump, tensimeter, intake pump, water inlet pipe, rising pipe, power supply, wire, the time relay; The water outlet of membrane module A is connected successively with rising pipe, tensimeter and water outlet peristaltic pump, and is subject to the control of the time relay; Intake pump is controlled by the time relay; Aeration head is connected successively with gas circuit pipeline, gas meter and air pump; Aeration head is positioned at membrane module A bottom; The two poles of the earth of electrode are connected with power supply respectively through wire, and the two poles of the earth are placed on membrane module A both sides; Intake pump taps into water pipe, and the water inlet pipe end is positioned at nitre nitrogen separator, and near nitre nitrogen separator bottom; Membrane module A forms by one of anion-exchange membrane, ultra-filtration membrane or microfiltration membrane with the back up pad of diversion trench and hole; One of anion-exchange membrane, ultra-filtration membrane or microfiltration membrane are separately positioned on the both sides of back up pad.
Described electrode adopts tabular or cylindric Graphite Electrodes.
Utilize the method for the nitrated and nitre nitrogen enrichment of said apparatus, its step comprises:
(1) former water is introduced: former water, after the intake pump supercharging, enters in nitre nitrogen separator with 4-6.6 ml/min, and intake pump is controlled by the time relay, intake for sexual type water inlet at intermittence be that the intake pump pumping time is 5 minutes: 4 minutes;
(2) membrane module A connection, flow set and aerobic nitrification reaction: the aerobic activated sludge that is 3000-3500mg/L by MLSS, membrane module A put into nitre nitrogen separator, membrane module A water outlet is connected successively with rising pipe, tensimeter and water outlet peristaltic pump, and be subject to the control of the time relay, open the water outlet peristaltic pump, adjusting flow is 4-6.6 ml/min, through rising pipe, carries out water outlet; Simultaneously, aeration head is put into to nitre nitrogen separator membrane module A bottom and carry out aeration, adjust gas meter, control DO at 2-3mg/L, HRT is 3.79-6.25d;
(3) power supply connects and current settings: the two poles of the earth of electrode are connected with power supply respectively through wire, and by anode over against ultra-filtration membrane, negative electrode is over against anion-exchange membrane, opening power, adjusting to electric current is 0.25A, and remains unchanged;
(4) pumping time is set and membrane module A cleaning: the water outlet peristaltic pump, under the control of the time relay, water outlet is that water outlet peristaltic pump pumping time is 5 minutes for sexual type water outlet at intermittence: 4 minutes, and synchronize intermittently Inlet and outlet water with intake pump, when tensimeter indication numerical value surpasses 15kpa, need be cleaned or be changed membrane module A.
After being cleaned, membrane module A can again put into operation.Whole process is flowed out from rising pipe by the nitre nitrogen of enrichment, and then has realized the enrichment of nitre nitrogen.
The utility model also provides a kind of membrane module A, it is characterized in that: this membrane module A forms by anion-exchange membrane, ultra-filtration membrane or microfiltration membrane with the back up pad of diversion trench and hole; Anion-exchange membrane and ultra-filtration membrane or microfiltration membrane are separately fixed at the two sides of back up pad.
Principle of the present utility model is:
(1) mineralized nitrogen is nitre nitrogen
In waste water, ammonia nitrogen, under aerobic activated sludge (being mainly nitrobacteria) effect, is converted into nitre nitrogen by nitrifying process.
(2) nitre nitrogen enrichment
Membrane module A forms by anion-exchange membrane, ultra-filtration membrane with the back up pad of diversion trench and hole, ultra-filtration membrane in membrane module A can allow water molecules to see through to enter between ultra-filtration membrane and back up pad, the water molecules seen through enters between back up pad and anion-exchange membrane by the hole of back up pad, make the anion-exchange membrane both sides be the aqueous solution, because anion-exchange membrane has negatively charged ion (as NO
3 -) select perviousness, under impressed current effect not, can enter in membrane module A by the dialysis principle, under the impressed current effect, quickening NO in the unit time
3 -the quantity that enters membrane module A increases, and enters the ion of membrane module A, can enter into rapidly the water seen through from ultra-filtration membrane, form the nitre nitrogen concentrated solution of high density, under the suction function of peristaltic pump, nitre nitrogen concentrated solution is transported to follow-up denitrification process, thereby realizes the enrichment of nitre nitrogen.
The utility model compared with prior art, has the following advantages and outstanding effect:
(1) can realize fast that in single processing unit mineralized nitrogen is nitre nitrogen.
(2) realized that in single processing unit, to the enrichment of nitre nitrogen, nitre nitrogen accumulation rate is 51%-58%; Owing to adopting membrane module A, kept the high density aerobic sludge, be conducive to nitrification.
(3) limitation in sewage disposal for electrodialysis and membrane reactor, developed immersion type membrane component A, and immersion type membrane component A not only can make water see through, and have negatively charged ion selection perviousness, but enrichment of N O
3 -, overcome electrodialysis can not be by the shortcoming of organism and ion isolation, has made up the weakness that membrane reactor can not the separation and concentration ion, and the immersion surrounding of membrane module A provides convenience for following practical engineering application.
(4) whole apparatus structure is simple, is convenient to the actually operating operation.
The accompanying drawing explanation
The system schematic that Fig. 1 provides for the utility model.
The method operation schematic diagram of the nitrated and nitre nitrogen enrichment of the system that Fig. 2 provides for the utility model.
A kind of membrane module A schematic diagram that Fig. 3 provides for the utility model.
The back up pad schematic diagram of a kind of membrane module A that Fig. 4 provides for the utility model.
In figure: 1-intake pump 2-water inlet pipe 3-nitre nitrogen separator 4-power supply 5-wire 6-electrode 7-aeration head 8-membrane module A 9-tensimeter 10-water outlet peristaltic pump 11-time relay 12-rising pipe 13-gas meter 14-air pump 15-gas circuit pipeline 16-back up pad 17-ultra-filtration membrane or microfiltration membrane 18-anion-exchange membrane 19-membrane module A water outlet 20-diversion trench 21-hole
Embodiment
Below in conjunction with accompanying drawing 1,2,3,4 and embodiment, explain detailedly, further to understand the utility model.
A kind of membrane module A 8(Fig. 3 of the present utility model, Fig. 4), by forming by anion-exchange membrane 18, ultra-filtration membrane or microfiltration membrane 17 with the back up pad 16 of diversion trench 20 and hole 21; Anion-exchange membrane 18 and ultra-filtration membrane or microfiltration membrane 17 are separately fixed at the two sides of back up pad 16.
In order to make experiment effect reach better, the anion-exchange membrane that the anion-exchange membrane 18 that the utility model adopts is ACS for the model that provides from Japanese astom, ultra-filtration membrane 17 is that 0.1 μ m, membrane flux are 18.75-20.83 L/m for the aperture provided from the auspicious clean spy in Nanjing
2.h ultra-filtration membrane.
System provided by the utility model (Fig. 1) comprises nitre nitrogen separator 3, is placed on membrane module A 8, aeration head 7 and electrode 6 in nitre nitrogen separator 3, intake pump 1, water inlet pipe 2, power supply 4, wire 5, tensimeter 9, water outlet peristaltic pump 10, the time relay 11, rising pipe 12, gas meter 13, air pump 14, gas circuit pipeline 15; Membrane module A water outlet 19 is connected successively with rising pipe 12, tensimeter 9 and water outlet peristaltic pump 10, and is subject to the control of the time relay 11; Intake pump 1 is controlled by the time relay 11; Aeration head 7 is connected successively with gas circuit pipeline 15, gas meter 13 and air pump 14; Aeration head 7 is positioned at membrane module A 8 bottoms; The two poles of the earth of electrode 6 are connected with power supply 4 respectively through wire 5, adopt anode over against ultra-filtration membrane 17, and negative electrode is over against anion-exchange membrane 18; Intake pump 1 taps into water pipe 2, and the water inlet pipe end is positioned at nitre nitrogen separator 3, and near nitre nitrogen separator 3 bottoms.
Fig. 2 has meaned system running state, and concrete steps are:
(1) former water is introduced: former water is after intake pump 1 supercharging, take flow through water inlet pipe 2 enters in nitre nitrogen separator 3 as 4-6.6 ml/min, intake pump 1 is controlled by the time relay 11, intake for sexual type water inlet at intermittence be that the intake pump pumping time is 5 minutes: 4 minutes.
(2) membrane module A connection, flow set and aerobic nitrification reaction: the aerobic activated sludge that is 3000-3500mg/L by MLSS, membrane module A 8 put into nitre nitrogen separator 3, membrane module A water outlet 19 is connected successively with rising pipe 12, tensimeter 9 and water outlet peristaltic pump 10, and be subject to the control of the time relay 11, open water outlet peristaltic pump 10, adjusting flow is 4-6.6 ml/min, through rising pipe 12 water outlets.Simultaneously, aeration head 7 is put into to nitre nitrogen separator 3 membrane module A 8 bottoms and carry out aeration, adjust gas meter 13, control DO at 2-3mg/L, HRT is 3.79-6.25d;
(3) power supply connects and current settings: the two poles of the earth of electrode 6 are connected with power supply 4 respectively through wire 5, and by anode over against ultra-filtration membrane 17, negative electrode is over against anion-exchange membrane 18, opening power 4, the adjustment electric current is 0.25 A, and remains unchanged.Ultra-filtration membrane 17 in membrane module A 8 can allow water molecules to see through to enter between ultra-filtration membrane 17 and back up pad 16, the water molecules seen through enters between back up pad 16 and anion-exchange membrane 18 by the hole 21 of back up pad 16, make anion-exchange membrane 18 both sides be the aqueous solution, because anion-exchange membrane 18 has negatively charged ion (as NO
3 -) select perviousness, under the effect of impressed current, NO in the unit time
3 -the quantity that enters membrane module A 8 increases, and enters the ion of membrane module A 8, can enter into rapidly the water seen through from ultra-filtration membrane 17, forms the nitre nitrogen concentrated solution of high density, and then makes nitre nitrogen obtain enrichment.
(4) pumping time is set and membrane module A cleaning: water outlet peristaltic pump 10, under the control of the time relay 11, water outlet is that water outlet peristaltic pump pumping time is 5 minutes for sexual type water outlet at intermittence: 4 minutes, and synchronize intermittently Inlet and outlet water with intake pump 1, when tensimeter 9 indication numerical value surpass 15kpa, need be cleaned membrane module A 8.
(5) again put into operation: after membrane module A 8 is cleaned, can again put into operation.Whole process is flowed out 12 by the nitre nitrogen of enrichment from rising pipe, and then has realized the enrichment of nitre nitrogen.
Result:
When example 1 is water distribution when former water, its main water-quality guideline is: NH
4 +-N=80 mg/L; Operational condition is: intake pump, water outlet peristaltic pump pumping time are 5 minutes: 4 minutes, flooding velocity is 4 ml/min, membrane module A water flow is 4 ml/min, electric current is 0.25A, DO=2 mg/L, MLSS=3000 mg/L, during HRT=6.25d, after the device of and nitre nitrogen enrichment nitrated through integral type combined films bio-reactor, the leading indicator of film water outlet can reach: NO
3 --N=126.88 mg/L, nitre nitrogen accumulation rate is 58.61%.
When example 2 is water distribution when former water, its main water-quality guideline is: NH
4 +-N=85 mg/L; Operational condition is: intake pump, water outlet peristaltic pump pumping time are 5 minutes: 4 minutes, flooding velocity is 6.6 ml/min, membrane module A water flow is 6.6 ml/min, electric current is 0.25A, DO=3 mg/L, MLSS=3500 mg/L, during HRT=3.79d, after the device of and nitre nitrogen enrichment nitrated through integral type combined films bio-reactor, the leading indicator of film water outlet can reach: NO
3 --N
-=128.89 mg/L, nitre nitrogen accumulation rate is 51.64%.
Claims (2)
1. the nitrated and nitre nitrogen enrichment system of an integral type, it is characterized in that: this system comprises uncovered nitre nitrogen separator, is placed on membrane module A, aeration head and electrode in nitre nitrogen separator, air pump, gas meter, gas circuit pipeline, the water outlet peristaltic pump, tensimeter, intake pump, water inlet pipe, rising pipe, power supply, wire, the time relay; The water outlet of membrane module A is connected successively with rising pipe, tensimeter and water outlet peristaltic pump, and is subject to the control of the time relay; Intake pump is controlled by the time relay; Aeration head is connected successively with gas circuit pipeline, gas meter and air pump; Aeration head is positioned at membrane module A bottom; The two poles of the earth of electrode are connected with power supply respectively through wire, and the two poles of the earth are placed on membrane module A both sides; Intake pump taps into water pipe, and the water inlet pipe end is positioned at nitre nitrogen separator, and near nitre nitrogen separator bottom; Membrane module A forms by one of anion-exchange membrane, ultra-filtration membrane or microfiltration membrane with the back up pad of diversion trench and hole; One of anion-exchange membrane, ultra-filtration membrane or microfiltration membrane are separately positioned on the both sides of back up pad.
2. and nitre nitrogen enrichment system nitrated according to a kind of integral type claimed in claim 1, is characterized in that: the tabular or cylindric Graphite Electrodes of described electrode employing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383379XU CN203333376U (en) | 2013-06-30 | 2013-06-30 | Integrated nitrification and nitrate nitrogen enrichment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320383379XU CN203333376U (en) | 2013-06-30 | 2013-06-30 | Integrated nitrification and nitrate nitrogen enrichment system |
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| CN203333376U true CN203333376U (en) | 2013-12-11 |
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| CN201320383379XU Expired - Fee Related CN203333376U (en) | 2013-06-30 | 2013-06-30 | Integrated nitrification and nitrate nitrogen enrichment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211227 Address after: 100176 9th floor, block T2, Han's Square, yard 2, Ronghua South Road, Yizhuang Economic and Technological Development Zone, Daxing District, Beijing Patentee after: BEIJING BEIHUA ZHONGQING ENVIRONMENTAL ENGINEERING TECHNOLOGY CO.,LTD. Address before: 212009 room 2501, block a, twin towers, science and technology new town, No. 468, Dingmao wisdom Avenue, Zhenjiang City, Jiangsu Province Patentee before: ZHENJIANG QINGSHUI ENVIRONMENTAL SCIENCE & TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 |
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| CF01 | Termination of patent right due to non-payment of annual fee |