CN103601335A - Device for removing nitrate from restaurant wastewater - Google Patents
Device for removing nitrate from restaurant wastewater Download PDFInfo
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- CN103601335A CN103601335A CN201310479529.1A CN201310479529A CN103601335A CN 103601335 A CN103601335 A CN 103601335A CN 201310479529 A CN201310479529 A CN 201310479529A CN 103601335 A CN103601335 A CN 103601335A
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Abstract
The invention discloses a device for removing nitrate from restaurant wastewater. The device comprises a barrel body (1), a water inlet (2), a water outlet (3), a filter material tank (4), an electrolytic tank (8), wherein the filter material tank (4) has biological ceramic balls (5); eight through holes (6) are uniformly distributed at the bottom of the filter material tank (4); nylon cloths (7) with a porosity of 30-80% is disposed in the through holes (6); the filter material tank (4) is communicated with the electrolytic tank (8) through the through holes (6); a catalyst hopper (8) is arranged between the electrolytic tank (8) and the barrel body (1); water at the bottom of the barrel body (1) is continuously pumped to the top of the barrel body (1) through a power motor (17) below the barrel body (1); and then the water is sprayed on surfaces of the biological ceramic balls (5) through a water distributor (18). With the device provided by the invention, a removal rate of nitrate from the restaurant wastewater can reach over 99.9%. Meanwhile, the device has the advantages of good treatment effect, stable running, simple operation and no secondary pollution.
Description
Technical field
The invention belongs to sewage treatment area, relate to food and drink waste water process field, be specifically related to a kind of device of removing nitrate in food and drink waste water.
Background technology
Food and drink waste water containing nitrate belongs to the poisonous organic pollutant effluents of difficult degradation, result catering trade sewage effluent contamination index being detected according to domestic several main big cities shows: BOD is 300-500mg/L, COD is 1000mg/L left and right, grease is 150-421mg/L, nitrate mean value 40-50ppm, SS is 300-568 mg/L, and visible food and drink waste water is high density pollution source, is the contaminated one of the main reasons of peri-urban water body.Containing the food and drink waste water of nitrate, deal with improperly or directly discharge, make many countries and regions be subject to azotate pollution in various degree, nitrate can be converted into nitrite under certain condition, and nitrite can have the oxyphorase of oxygen therapy function to be combined in human body, cause anoxic even dead, larger to following baby's harm in three months; Nitrite can also be facilitated the formation of carcinogens nitrosamine etc. in human body.Therefore, remove safely and efficiently nitrate in food and drink waste water and become a problem in the urgent need to address.
Physico-chemical processes can not thoroughly be removed nitrate, can only concentrate or shift; Chemical process reaction conditions is difficult to control, and easily produces by product ammonia nitrogen etc., and reaction product metal ion can bring pollution.Biochemical process is divided into autotrophic denitrification except nitre method and heterotrophic denitrification are except nitre method by the difference of electron donor.The speed of response of autotrophic denitrification is slower, and the hydrogen of using in hydrogen autotrophic denitrification process is inflammable and explosive, and in water, solubleness is low, is not easy for extensive treatment of nitric acid salt waste water; Sulphur autotrophic denitrification easily make system for handling and water outlet pH on the low side, the vitriol of generation also can reduce effluent quality.With respect to autotrophic denitrification, the speed of heterotrophic denitrification is very fast, but the difficult problem such as heterotrophic denitrification removes that nitrate exists carbon source addition and effluent quality is difficult to control and treatment system pH is unstable.
Summary of the invention
The present invention is directed to and in prior art, have the not good and effluent quality problem rambunctious for the treatment of effect, a kind of device of removing nitrate in food and drink waste water is provided, by microorganism denitrification, electrolysis, catalyzing cooperation effect, thereby reach the object of removing nitrate in food and drink waste water; The present invention has the features such as treatment effect is good, stable, simple to operate, long service life.
For achieving the above object, the technical solution adopted in the present invention is: a kind of device of removing nitrate in food and drink waste water, comprise a cylindrical shell (1), described cylindrical shell (1) internal diameter is 30-40cm, upper and lower two ends are respectively equipped with water-in (2) and water outlet (3), in cylindrical shell (1), being provided with internal diameter is the filtrate tank (4) of 10-20cm, filtrate tank (4) communicates with water-in (2), built-in biological Ceramic Balls (5), at the bottom of tank, be evenly distributed with eight through holes (6), the nylon cloth (7) of the built-in porosity 30-80% of through hole (6), by through hole (6), communicate with electrolytic cell (8).
Described electrolytic cell (8) is arranged on the outside of filtrate tank (4), with filtrate tank (4) outer wall interval 6-8cm, electrolytic cell (8) inwall both sides are fixed with respectively negative electrode (9) and positive electrode (10), outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), pH-meter (12) connects the dosing tank (14) of cylindrical shell (1) top, between dosing tank (14) and pH-meter (12), be provided with dosing pump (15), between electrolytic cell (8) and cylindrical shell (1), catalyst hopper (16) is housed, cylindrical shell (1) below is constantly extracted into cylindrical shell (1) top by the current of cylindrical shell (1) bottom by power motor (17), by water distributor (18), be sprayed onto again the surface of bio ceramic balls (5).
Described through hole (6) is in the same size, and internal diameter is 5-8cm.
Described water-cooled block (11) is the metal block that water channel is left in an inside, by copper or aluminium, is made.
Described dosing tank (14) one sides are equipped with lime, and opposite side is equipped with hydrochloric acid.
Mass percent is housed in described catalyst hopper (16) and is respectively 5%Pb, 1.25% Cu and 93.75% Al
2o
3.
A kind of application method of removing the device of nitrate in food and drink waste water of the present invention is: the food and drink waste water containing nitrate enters in filtrate tank (4) by water-in (2), through specific surface area, is 0.03-0.05m
2after the bio ceramic balls of/g (5) absorption denitrification, by through hole (6), through nylon cloth (7), be diffused into electrolytic cell (8), in the time of electrolytic hydrogen production, by pH-meter (12) and water-cooled block (11), regulate pH and temperature, by transport pipe (13), send into cylindrical shell (1) catalysis again, power motor (17) is extracted into cylindrical shell (1) top by the current after cylindrical shell (1) bottom catalysis, by water distributor (18), be sprayed onto again the surface of bio ceramic balls (5), circulation successively, finally by the water outlet (3) of cylindrical shell bottom, discharged, in the kitchen waste water of processing through apparatus of the present invention, the clearance of nitrate reaches more than 99.9%.
A kind of principle of work of removing the device of nitrate in food and drink waste water of the present invention is: the food and drink waste water containing nitrate enters in filtrate tank (4) by water-in (2), and the water conditioning bacterium of the attached work growth in bio ceramic balls (3) surface becomes nitrite and nitrogen oxide to be diffused into electrolytic cell (8) by the nylon cloth (7) in through hole (6) nitrate reduction in food and drink waste water, electrolytic cell (8) electrolysis food and drink waste water produces hydrogen, it is 9-11 ℃ that water-cooled block (11) is controlled temperature, pH-meter (12) regulates after pH 6-8, food and drink waste water enters cylindrical shell (1), by catalyst hopper (16), add catalyzer, more than 90% nitrite and nitrogen oxide further can be converted to ammonia and nitrogen, water in cylindrical shell is extracted into cylindrical shell (1) top by power motor (17), by water distributor (18), be sprayed onto again the surface of bio ceramic balls (5), repeat after above-mentioned work for some time, can realize the object of pollution-free removal waste water nitrite.
Beneficial effect of the present invention is: the present invention is by microorganism denitrification, electrolysis, catalyzing cooperation effect, has realized the object of pollution-free removal waste water nitrite; Power motor is extracted into cylinder top by the current of cylinder body bottom and continues circular treatment, guarantees effluent quality safety when guaranteeing nitrate removal rate; Therefore, the present invention has the advantages such as treatment effect is good, stable, simple to operate, non-secondary pollution.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Wherein: 1, cylindrical shell; 2, water-in; 3, water outlet; 4, filtrate tank; 5, bio ceramic balls; 6, through hole; 7, nylon cloth; 8, electrolytic cell; 9, negative electrode; 10, positive electrode; 11, water-cooled block; 12, pH-meter; 13, transport pipe; 14, dosing tank; 15, dosing pump; 16, catalyst hopper; 17, power motor; 18, water distributor.
Embodiment
Below in conjunction with accompanying drawing, technical solution of the present invention is further illustrated.
As shown in Figure 1, a kind of device of removing nitrate in food and drink waste water provided by the invention, comprise cylindrical shell (1), water-in (2), water outlet (3), filtrate tank (4), electrolytic cell (8), in described filtrate tank (4), bio ceramic balls (5) is housed, at the bottom of tank, be evenly distributed with eight through holes (6), the nylon cloth (7) of the built-in porosity 30-80% of through hole (6), communicates with electrolytic cell (8) by through hole (6), electrolytic cell (8) inwall both sides are fixed with respectively negative electrode (9) and positive electrode (10), outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), pH-meter (12) connects the dosing tank (14) of cylindrical shell (1) top, between dosing tank (14) and pH-meter (12), be provided with dosing pump (15), between electrolytic cell (8) and cylindrical shell (1), catalyst hopper (16) is housed, cylindrical shell (1) below is constantly extracted into cylindrical shell (1) top by the current of cylindrical shell (1) bottom by power motor (17), by water distributor (18), be sprayed onto again the surface of bio ceramic balls (5), through hole (6) is in the same size, and internal diameter is 5-8cm, water-cooled block (11) is the metal block that water channel is left in an inside, by copper or aluminium, is made, dosing tank (14) one sides are equipped with lime, and opposite side is equipped with hydrochloric acid, mass percent is housed in catalyst hopper (16) and is respectively 5%Pb, 1.25% Cu and 93.75% Al
2o
3.
When a kind of device of removing nitrate in food and drink waste water provided by the invention is used, food and drink waste water containing nitrate enters in filtrate tank (4) by water-in (2), and the water conditioning bacterium of the attached work growth in bio ceramic balls (3) surface is diffused into electrolytic cell (8) by the nylon cloth (7) in through hole (6) after the nitrate reduction in food and drink waste water is become to nitrite and nitrogen oxide, electrolytic cell (8) electrolysis food and drink waste water produces hydrogen, at water-cooled block (11) and pH-meter (12) control temperature, it is 10 ℃, pH is that in 8 situation, food and drink waste water enters cylindrical shell (1), by catalyst hopper (16), in cylindrical shell (1), add catalyzer, more than 90% nitrite and nitrogen oxide further can be converted to ammonia and nitrogen, power motor (17) is extracted into cylindrical shell (1) top by the current of cylindrical shell (1) bottom simultaneously, the surface continuation circular treatment that is sprayed onto bio ceramic balls (5) by water distributor (18) is again after 20 minutes, in the kitchen waste water of being discharged by the water outlet (3) of cylindrical shell bottom, the clearance of nitrate reaches more than 99.9%.
Above-described the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; do not departing under the prerequisite of structure of the present invention; can also make some distortion and improvement; these also should be considered as protection scope of the present invention, and these can not affect effect of the present invention and practical applicability.
Claims (6)
1. a device of removing nitrate in food and drink waste water, comprise a cylindrical shell (1), it is characterized in that: described cylindrical shell (1) internal diameter is 30-40cm, upper and lower two ends are respectively equipped with water-in (2) and water outlet (3), in cylindrical shell (1), being provided with internal diameter is the filtrate tank (4) of 10-20cm, filtrate tank (4) communicates with water-in (2), built-in biological Ceramic Balls (5), at the bottom of tank, be evenly distributed with eight through holes (6), the nylon cloth (7) of the built-in porosity 30-80% of through hole (6), communicates with electrolytic cell (8) by through hole (6).
2. a kind of device of removing nitrate in food and drink waste water according to claim 1, it is characterized in that: described electrolytic cell (8) is arranged on the outside of filtrate tank (4), with filtrate tank (4) outer wall interval 6-8cm, electrolytic cell (8) inwall both sides are fixed with respectively negative electrode (9) and positive electrode (10), outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), pH-meter (12) connects the dosing tank (14) of cylindrical shell (1) top, between dosing tank (14) and pH-meter (12), be provided with dosing pump (15), between electrolytic cell (8) and cylindrical shell (1), catalyst hopper (16) is housed, cylindrical shell (1) below is constantly extracted into cylindrical shell (1) top by the current of cylindrical shell (1) bottom by power motor (17), by water distributor (18), be sprayed onto again the surface of bio ceramic balls (5).
3. a kind of device of removing nitrate in food and drink waste water according to claim 1, is characterized in that: described through hole (6) is in the same size, and internal diameter is 5-8cm.
4. a kind of device of removing nitrate in food and drink waste water according to claim 1, is characterized in that: described water-cooled block (11) is the metal block that water channel is left in an inside, by copper or aluminium, is made.
5. a kind of device of removing nitrate in food and drink waste water according to claim 1, is characterized in that: described dosing tank (14) one sides are equipped with lime, and opposite side is equipped with hydrochloric acid.
6. a kind of device of removing nitrate in food and drink waste water according to claim 1, is characterized in that: mass percent is housed in described catalyst hopper (16) and is respectively 5%Pb, 1.25% Cu and 93.75% Al
2o
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479529.1A CN103601335B (en) | 2013-10-15 | 2013-10-15 | Device for removing nitrate from restaurant wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310479529.1A CN103601335B (en) | 2013-10-15 | 2013-10-15 | Device for removing nitrate from restaurant wastewater |
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| CN103601335A true CN103601335A (en) | 2014-02-26 |
| CN103601335B CN103601335B (en) | 2015-01-21 |
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| CN201310479529.1A Active CN103601335B (en) | 2013-10-15 | 2013-10-15 | Device for removing nitrate from restaurant wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179534A (en) * | 2018-11-10 | 2019-01-11 | 天津魁都科技有限公司 | Bioceramic running water equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10286583A (en) * | 1997-04-14 | 1998-10-27 | Hirai Kogyo Kk | Apparatus for treating phosphorus-containing organic water apparatus |
| CN101693578A (en) * | 2009-10-22 | 2010-04-14 | 浙江大学 | Solidoid heterotrophy and electrochemical autotrophy integrated denitrification reactor for removing nitrate out of water |
| CN102259978A (en) * | 2010-05-31 | 2011-11-30 | 中国地质大学（北京） | Reactor and method for removing nitrate from water |
| CN202148207U (en) * | 2011-08-04 | 2012-02-22 | 天津市奥维工贸有限公司 | Water disposal device used in household grinder |
| CN103183402A (en) * | 2013-04-21 | 2013-07-03 | 北京工业大学 | Reinforced nitrogen and phosphorus removal method suitable for reclaimed water with low carbon nitrogen ratio |
-
2013
- 2013-10-15 CN CN201310479529.1A patent/CN103601335B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10286583A (en) * | 1997-04-14 | 1998-10-27 | Hirai Kogyo Kk | Apparatus for treating phosphorus-containing organic water apparatus |
| CN101693578A (en) * | 2009-10-22 | 2010-04-14 | 浙江大学 | Solidoid heterotrophy and electrochemical autotrophy integrated denitrification reactor for removing nitrate out of water |
| CN102259978A (en) * | 2010-05-31 | 2011-11-30 | 中国地质大学（北京） | Reactor and method for removing nitrate from water |
| CN202148207U (en) * | 2011-08-04 | 2012-02-22 | 天津市奥维工贸有限公司 | Water disposal device used in household grinder |
| CN103183402A (en) * | 2013-04-21 | 2013-07-03 | 北京工业大学 | Reinforced nitrogen and phosphorus removal method suitable for reclaimed water with low carbon nitrogen ratio |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109179534A (en) * | 2018-11-10 | 2019-01-11 | 天津魁都科技有限公司 | Bioceramic running water equipment |
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Effective date of registration: 20151112 Address after: 226571, Jiangsu Province, Nantong City, Rugao Province East Chen Chen Zhen community neighborhood committee 10 groups Patentee after: Jiangsu Tuo Bang new material Co., Ltd Address before: 414, building C, Tianhong building, No. 801, science education city, middle Wu Road, Wujin District, Jiangsu, Changzhou 213164 Patentee before: Changzhou Siyu Environmental Protection Material Technology Co., Ltd. |
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Effective date of registration: 20191217 Address after: Room 207, main office building, No.118 Longxing Road, Haining Economic Development Zone, Haining City, Jiaxing City, Zhejiang Province Patentee after: Haining Economic Development Industrial Park Development and Construction Co., Ltd Address before: 226571, Jiangsu Province, Nantong City, Rugao Province East Chen Chen Zhen community neighborhood committee 10 groups Patentee before: Jiangsu Tuo Bang new material Co., Ltd |
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