CN204689731U - Remove the treatment system of nitrate nitrogen in ground water - Google Patents
Remove the treatment system of nitrate nitrogen in ground water Download PDFInfo
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- CN204689731U CN204689731U CN201520206468.6U CN201520206468U CN204689731U CN 204689731 U CN204689731 U CN 204689731U CN 201520206468 U CN201520206468 U CN 201520206468U CN 204689731 U CN204689731 U CN 204689731U
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- reactor body
- negative potential
- positive electrode
- lower baffle
- nitrate nitrogen
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Abstract
The utility model belongs to water treatment field.Remove the treatment system of nitrate nitrogen in ground water, it is characterized in that comprising reactor body, positive electrode, negative potential, direct supply, rubber magnetic sheet, overhead gage, lower baffle plate, water inlet pipe, rising pipe; The central axis of reactor body is provided with positive electrode, and positive electrode selects graphite carbon rod, is close to reactor body inwall and is provided with negative potential, and negative potential selects nickel plate or titanium sheet material matter, and microorganic adhesion forms microbial film on the surface of negative potential; Positive electrode and negative potential connect positive pole and the negative pole of direct supply respectively by wire; Bottom in reactor body is provided with lower baffle, and lower baffle has prosopyle, and the bottom of reactor body is provided with water inlet pipe; Upper end in reactor body is provided with overhead gage; Rising pipe is arranged in the external wall of upper portion of reactor body, and rising pipe communicates with the inner chamber of reactor body; Reactor body is wrapped with rubber magnetic sheet.This treatment system effectively can remove nitrate nitrogen in ground water.
Description
Technical field
The utility model belongs to water treatment field, is specifically related to a kind of system removing nitrate nitrogen in ground water.
Background technology
In recent years, due to the development along with industrial or agricultural, especially with the use of agriculturally nitrogenous fertilizer, make the pollution of nitrate nitrogen in underground water more and more serious, the whole nation ten large water system shallow ground water nitrogen contents generally exceed standard.Underground water, as the main drinking-water source of China, provides the national drinking-water of 70% population, the rural potable water of 95%.Nitrate itself contained in tap water is safe from harm to human body, but nitrate can change into nitrite in human body, and nitrite has great harm to HUMAN HEALTH, can cause baby's methemoglobinemia, " three cause " etc.Therefore, the nitrate nitrogen how effectively removed in underground water is extremely urgent.At present, conventional both at home and abroad nitrate recovery technique mainly contains biological denitrification, electrodialysis, reverse osmosis, ion exchange method and iron reduction method etc.Nitrate just concentrates in medium or waste liquid by the nitrate nitrogen utilizing electrodialysis, reverse osmosis, ion exchange method to remove in underground water, only serve waste liquid transfer or inspissated, and cost is high, processing power is weak, process is thorough, can produce secondary pollution etc.; And iron reduction method needs strict adjust ph, and contain more ammonia nitrogen in water after process, still need subsequent disposal.Therefore find a kind for the treatment of system of effective reply groundwater azotate pollution and method and become the difficult problem that water factory must solve, guarantee is significant.
Utility model content
The purpose of this utility model is to provide a kind for the treatment of system removing nitrate nitrogen in ground water, and this treatment system effectively can remove nitrate nitrogen in ground water.
For achieving the above object, the technical solution used in the present invention is: the treatment system removing nitrate nitrogen in ground water, it is characterized in that comprising reactor body, positive electrode, negative potential, direct supply, rubber magnetic sheet, overhead gage, lower baffle plate, water inlet pipe, rising pipe; The central axis of reactor body is provided with positive electrode, and positive electrode selects graphite carbon rod, is close to reactor body inwall and is provided with negative potential, and negative potential selects nickel plate or titanium sheet material matter; During use, microorganic adhesion forms microbial film on the surface of negative potential; Positive electrode and negative potential connect positive pole and the negative pole of direct supply respectively by wire; Bottom in reactor body is provided with lower baffle, and lower baffle is positioned at the below of positive electrode, negative potential, and lower baffle has prosopyle, and the bottom of reactor body is provided with water inlet pipe, and the outlet of water inlet pipe is positioned at the below of lower baffle; Upper end in reactor body is provided with overhead gage, and overhead gage is positioned at the top of positive electrode, negative potential; Rising pipe is arranged in the external wall of upper portion of reactor body, and rising pipe communicates with the inner chamber of reactor body; Reactor body is wrapped with rubber magnetic sheet.
Described reactor body adopts cylindrical structure.
The bottom of described reactor body is provided with storage chamber, and storage chamber is positioned at the below of lower baffle.
The upper end of described positive electrode, the upper end of negative potential are fixed with overhead gage respectively.The lower end of described positive electrode, the lower end of negative potential are fixed with lower baffle respectively.
The utility model is the process that biofilm-electrode-magnetic field is coupled, and reaction principle is as follows:
The H that reactor cathodic electrolytic water produces
2as electron donor, NO in water
3 -as electron acceptor(EA), utilize the microbial film being fixed on reactor cathode surface, by NO
3 -be reduced to N
2, realize denitrification denitrogenation.The hydrogen that in this technology, negative electrode produces can by the denitrifying bacteria efficiency utilization of set on it, the oxidation products CO of graphite carbon rod anode
2can be denitrifying bacteria and carbon source is provided, simultaneously to the OH produced in denitrification process
-there is certain shock absorption, be conducive to denitrification and carry out.Reaction formula is as follows:
(1)2H
20+2e→H
2+20H
-(2) 2NO
3 -+2H
2→2NO
2 -+2H
2O
(3)C+2H
2O→CO
2+4H
++4e (4) 2NO
2 -+3H
2+2H
+→N
2+4H
2O
While electric current provides electron donor in above-mentioned reaction process, also form electric field.Denitrification mainly occurs in cathode surface, and as denitrifying main object NO
3 -but be subject to the effect of anode direction electrical forces, and along with the increase of strength of current, electrical forces increases, and hinders NO
3 -to negative electrode diffusion, thus reduce the mass-transfer efficiency of reactor.
The magnetic field that the rubber magnetic sheet of reactor body outsourcing in the utility model produces can produce reactive force and long-range navigation magnetic force to moving charge, and long-range navigation magnetic force energy changes NO
3 -stressing conditions, can NO be impelled
3 -to movable cathode, be conducive to NO
3 -at negative electrode generation anti-nitration reaction.Externally-applied magnetic field also produces certain impact to aspects such as microorganism growth, microbial enzymatic activities and microorganism cells membrane permeabilities in addition, and these improve mass-transfer efficiency and the clearance of nitrate to a great extent.
Biological process and electrochemical process and magnetic technology organically combine by the utility model, make use of autotrophic microorganism denitrification and do not need the features such as organic carbon source, efficient mass transfer between microbial film and electrode, not producing any by product affecting water quality safety, is a kind of clean underground water denitrification system and method.
The beneficial effects of the utility model are: this treatment system effectively can remove nitrate nitrogen in ground water (water outlet nitrogen removal rate is more than 90%).The utility model is mainly for the treatment of by the underground water of azotate pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-reactor body; 2-positive electrode; 3-negative potential; 4-direct supply (D.C. regulated power supply); 5-rubber magnetic sheet; 6-overhead gage; 7-lower baffle plate; 8-water inlet pipe; 9-rising pipe, 10-prosopyle.
Embodiment
As shown in Figure 1, remove the treatment system of nitrate nitrogen in ground water, comprise reactor body 1, positive electrode 2, negative potential 3, direct supply (D.C. regulated power supply) 4, rubber magnetic sheet 5, overhead gage 6, lower baffle plate 7, water inlet pipe 8, rising pipe 9; Described reactor body 1 adopts cylindrical structure; The central axis of reactor body 1 is provided with positive electrode 2, positive electrode selects graphite carbon rod, is close to reactor body 1 inwall and is provided with negative potential 3, and negative potential 3 selects nickel plate or titanium sheet material matter; During use, microorganic adhesion forms microbial film on the surface of negative potential 3; Positive electrode 2 (anode) and negative potential 3 (negative electrode) connect positive pole and the negative pole of direct supply 4 respectively by wire; Bottom in reactor body is provided with lower baffle 7, lower baffle 7 is positioned at the below of positive electrode 2, negative potential 3, lower baffle 7 has (being evenly arranged) prosopyle 10(lower baffle not only fixed electorde but also have uniform water distribution effect), the bottom of reactor body 1 is provided with water inlet pipe 8, the outlet of water inlet pipe 8 is positioned at the below (outlet of water inlet pipe 8 communicates with prosopyle 10, and water inlet pipe 8 connects underground water) of lower baffle 7; Upper end in reactor body is provided with overhead gage 6, and overhead gage 6 is positioned at the top of positive electrode 2, negative potential 3; Rising pipe 9 is arranged in the external wall of upper portion of reactor body 1, and rising pipe 9 communicates with the inner chamber of reactor body 1 (water after process discharges system by rising pipe 9); Reactor body 1 is wrapped with the field direction of rubber magnetic sheet 5(rubber magnetic sheet for inside along reactor body radius).
The bottom of described reactor body is provided with storage chamber (bottom is cone-shaped body), and storage chamber is positioned at the below of lower baffle 7.
(baffle plate 6 plays fixed electorde) is fixed with overhead gage 6 respectively in the upper end of described positive electrode 2, the upper end of negative potential 3; The lower end of described positive electrode 2, the lower end of negative potential 3 are fixed with lower baffle 7 respectively.
The utility model with by the underground water of azotate pollution for handling object, adopt biofilm-electrode-magnetic Field Coupling water treatment device, under following control condition: water inlet the concentration of nitrate nitrogen is less than 80mg/L, inflow temperature controls at 10 ~ 30 DEG C, water inlet pH value is 6. 5 ~ 8.5, hydraulic detention time is 4 ~ 10h, the polar plate spacing 30 ~ 50cm of positive electrode and negative potential, current density 0.005 ~ 0.012 mA/cm
2, the magneticstrength of outpacking rubber magnetic sheet is 25 ~ 55mT, and can realize denitrogenation preferably, water outlet nitrogen removal rate is more than 90%.
Claims (5)
1. remove the treatment system of nitrate nitrogen in ground water, it is characterized in that comprising reactor body (1), positive electrode (2), negative potential (3), direct supply (4), rubber magnetic sheet (5), overhead gage (6), lower baffle plate (7), water inlet pipe (8), rising pipe (9); The central axis of reactor body (1) is provided with positive electrode (2), positive electrode selects graphite carbon rod, is close to reactor body (1) inwall and is provided with negative potential (3), and negative potential (3) selects nickel plate or titanium sheet material matter; During use, microorganic adhesion forms microbial film on the surface of negative potential (3); Positive electrode (2) and negative potential (3) connect positive pole and the negative pole of direct supply (4) respectively by wire; Bottom in reactor body is provided with lower baffle (7), lower baffle (7) is positioned at the below of positive electrode (2), negative potential (3), lower baffle (7) has prosopyle (10), the bottom of reactor body (1) is provided with water inlet pipe (8), and the outlet of water inlet pipe (8) is positioned at the below of lower baffle (7); Upper end in reactor body is provided with overhead gage (6), and overhead gage (6) is positioned at the top of positive electrode (2), negative potential (3); Rising pipe (9) is arranged in the external wall of upper portion of reactor body (1), and rising pipe (9) communicates with the inner chamber of reactor body (1); Reactor body (1) is wrapped with rubber magnetic sheet (5).
2. the treatment system removing nitrate nitrogen in ground water according to claim 1, is characterized in that: described reactor body adopts cylindrical structure.
3. the treatment system removing nitrate nitrogen in ground water according to claim 1, it is characterized in that: the bottom of described reactor body is provided with storage chamber, storage chamber is positioned at the below of lower baffle.
4. the treatment system removing nitrate nitrogen in ground water according to claim 1, is characterized in that: the upper end of described positive electrode, the upper end of negative potential are fixed with overhead gage respectively.
5. the treatment system removing nitrate nitrogen in ground water according to claim 1, is characterized in that: the lower end of described positive electrode, the lower end of negative potential are fixed with lower baffle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206468.6U CN204689731U (en) | 2015-04-08 | 2015-04-08 | Remove the treatment system of nitrate nitrogen in ground water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520206468.6U CN204689731U (en) | 2015-04-08 | 2015-04-08 | Remove the treatment system of nitrate nitrogen in ground water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204689731U true CN204689731U (en) | 2015-10-07 |
Family
ID=54230046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520206468.6U Expired - Fee Related CN204689731U (en) | 2015-04-08 | 2015-04-08 | Remove the treatment system of nitrate nitrogen in ground water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204689731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902763A (en) * | 2017-10-18 | 2018-04-13 | 浙江工商大学 | It is a kind of to be used to eliminate denitrogenation electrode material of groundwater azotate and its preparation method and application |
-
2015
- 2015-04-08 CN CN201520206468.6U patent/CN204689731U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107902763A (en) * | 2017-10-18 | 2018-04-13 | 浙江工商大学 | It is a kind of to be used to eliminate denitrogenation electrode material of groundwater azotate and its preparation method and application |
| CN107902763B (en) * | 2017-10-18 | 2020-05-29 | 浙江工商大学 | Denitrification electrode material for eliminating nitrate in underground water and preparation method and application thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160408 |