CN103601335B - Device for removing nitrate from restaurant wastewater - Google Patents
Device for removing nitrate from restaurant wastewater Download PDFInfo
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- CN103601335B CN103601335B CN201310479529.1A CN201310479529A CN103601335B CN 103601335 B CN103601335 B CN 103601335B CN 201310479529 A CN201310479529 A CN 201310479529A CN 103601335 B CN103601335 B CN 103601335B
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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 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 display according to domestic several major metropolitan is detected catering trade sewage effluent contamination index: BOD is 300-500mg/L, COD is about 1000mg/L, 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.Food and drink waste water containing nitrate is dealt with improperly or is directly discharged, make the azotate pollution that many countries and regions are subject 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 baby's harm in less than three months; Nitrite can also facilitate the formation of carcinogens nitrosamine etc. in human body.Therefore, remove nitrate in food and drink waste water safely and efficiently and become a problem in the urgent need to address.
Physico-chemical processes thoroughly can not remove nitrate, can only be carried out concentrating or shifting; Chemical process reaction conditions is difficult to control, and easily produce by product ammonia nitrogen etc., reaction product metal ion can bring pollution.Biochemical process is divided into autotrophic denitrification to remove nitre method by the difference of electron donor and heterotrophic denitrification removes nitre method.The speed of response of autotrophic denitrification is comparatively slow, and the hydrogen used 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.Relative to autotrophic denitrification, the speed of heterotrophic denitrification is very fast, but heterotrophic denitrification removal nitrate also exists carbon source addition and effluent quality is difficult to the difficult problem such as control and treatment system pH instability.
Summary of the invention
The present invention is directed in prior art and there is the not good and effluent quality problem rambunctious for the treatment of effect, a kind of device removing nitrate in food and drink waste water is provided, by microorganism denitrification, electrolysis, catalyzing cooperation effect, thus reach the object 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 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), the filtrate tank (4) that internal diameter is 10-20cm is provided with in cylindrical shell (1), filtrate tank (4) communicates with water-in (2), built-in biological Ceramic Balls (5), eight through holes (6) are evenly distributed with at the bottom of tank, the nylon cloth (7) of through hole (6) built-in porosity 30-80%, communicated with electrolytic cell (8) by through hole (6).
Described electrolytic cell (8) is arranged on the outside of filtrate tank (4), and filtrate tank (4) outer wall interval 6-8cm, electrolytic cell (8) inwall both sides are fixed with negative electrode (9) and positive electrode (10) respectively, outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), the dosing tank (14) of pH-meter (12) connector drum (1) top, dosing pump (15) is provided with between dosing tank (14) and pH-meter (12), catalyst hopper (16) is housed between electrolytic cell (8) and cylindrical shell (1), the current of cylindrical shell (1) bottom are constantly extracted into cylindrical shell (1) top by power motor (17) by cylindrical shell (1) below, the surface of bio ceramic balls (5) is sprayed onto again by water distributor (18).
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, is made up of copper or aluminium.
Lime is equipped with in described dosing tank (14) side, and opposite side is equipped with hydrochloric acid.
In described catalyst hopper (16), mass percent is housed and is respectively 5%Pb, 1.25% Cu and 93.75% Al
2o
3.
A kind of application method 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), is 0.03-0.05m through specific surface area
2electrolytic cell (8) is diffused into by through hole (6) through nylon cloth (7) after bio ceramic balls (5) the absorption denitrification of/g, pH and temperature is regulated by pH-meter (12) and water-cooled block (11) while electrolytic hydrogen production, cylindrical shell (1) catalysis is sent into again by transport pipe (13), current after cylindrical shell (1) bottom catalysis are extracted into cylindrical shell (1) top by power motor (17), the surface of bio ceramic balls (5) is sprayed onto again by water distributor (18), circulate successively, finally discharged by the water outlet (3) of cylindrical shell bottom, in the kitchen waste water of apparatus of the present invention process, the clearance of nitrate reaches more than 99.9%.
A kind of principle of work 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 nylon cloth (7) after the nitrate reduction in food and drink waste water is become nitrite and nitrogen oxide by the water conditioning bacterium that the attached work in bio ceramic balls (3) surface grows in through hole (6) is diffused into electrolytic cell (8), electrolytic cell (8) electrolysis food and drink waste water produces hydrogen, water-cooled block (11) control temperature is 9-11 DEG C, after pH-meter (12) regulates pH 6-8, food and drink waste water enters cylindrical shell (1), catalyzer is added by catalyst hopper (16), the nitrite of more than 90% and nitrogen oxide can be converted to ammonia and nitrogen further, water in cylindrical shell is extracted into cylindrical shell (1) top by power motor (17), the surface of bio ceramic balls (5) is sprayed onto again by water distributor (18), after repeating above-mentioned work for some time, the object of pollution-free removal waste water nitrite can be realized.
Beneficial effect of the present invention is: the present invention is by microorganism denitrification, electrolysis, catalyzing cooperation effect, achieves the object of pollution-free removal waste water nitrite; The current of cylinder body bottom are extracted into cylinder top and continue circular treatment by power motor, guarantee effluent quality safety while ensureing 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 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), described filtrate tank (4) is built with bio ceramic balls (5), eight through holes (6) are evenly distributed with at the bottom of tank, the nylon cloth (7) of through hole (6) built-in porosity 30-80%, is communicated with electrolytic cell (8) by through hole (6), electrolytic cell (8) inwall both sides are fixed with negative electrode (9) and positive electrode (10) respectively, outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), the dosing tank (14) of pH-meter (12) connector drum (1) top, dosing pump (15) is provided with between dosing tank (14) and pH-meter (12), catalyst hopper (16) is housed between electrolytic cell (8) and cylindrical shell (1), the current of cylindrical shell (1) bottom are constantly extracted into cylindrical shell (1) top by power motor (17) by cylindrical shell (1) below, the surface of bio ceramic balls (5) is sprayed onto again by water distributor (18), 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, is made up of copper or aluminium, lime is equipped with in dosing tank (14) side, 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 removing nitrate in food and drink waste water provided by the invention uses, food and drink waste water containing nitrate enters in filtrate tank (4) by water-in (2), is diffused into electrolytic cell (8) after the nitrate reduction in food and drink waste water is become nitrite and nitrogen oxide by the water conditioning bacterium that the attached work in bio ceramic balls (3) surface grows by the nylon cloth (7) in through hole (6), electrolytic cell (8) electrolysis food and drink waste water produces hydrogen, it is 10 DEG C at water-cooled block (11) and pH-meter (12) control temperature, when pH is 8, food and drink waste water enters cylindrical shell (1), in cylindrical shell (1), catalyzer is added by catalyst hopper (16), the nitrite of more than 90% and nitrogen oxide can be converted to ammonia and nitrogen further, the current of cylindrical shell (1) bottom are extracted into cylindrical shell (1) top by power motor (17) simultaneously, the surface continuation circular treatment of bio ceramic balls (5) is sprayed onto after 20 minutes again by water distributor (18), 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; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the present invention and practical applicability.
Claims (5)
1. remove the device of nitrate in food and drink waste water for one kind, 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), the filtrate tank (4) that internal diameter is 10-20cm is provided with in cylindrical shell (1), filtrate tank (4) communicates with water-in (2), built-in biological Ceramic Balls (5), eight through holes (6) are evenly distributed with at the bottom of tank, the nylon cloth (7) of through hole (6) built-in porosity 30-80%, is communicated with electrolytic cell (8) by through hole (6), described electrolytic cell (8) is arranged on the outside of filtrate tank (4), and filtrate tank (4) outer wall interval 6-8cm, electrolytic cell (8) inwall both sides are fixed with negative electrode (9) and positive electrode (10) respectively, outer wall is provided with water-cooled block (11) and pH-meter (12), be connected by transport pipe (13) with cylindrical shell (1), the dosing tank (14) of pH-meter (12) connector drum (1) top, dosing pump (15) is provided with between dosing tank (14) and pH-meter (12), catalyst hopper (16) is housed between electrolytic cell (8) and cylindrical shell (1), the current of cylindrical shell (1) bottom are constantly extracted into cylindrical shell (1) top by power motor (17) by cylindrical shell (1) below, the surface of bio ceramic balls (5) is sprayed onto again by water distributor (18).
2. a kind of device 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.
3. a kind of device 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, is made up of copper or aluminium.
4. a kind of device removing nitrate in food and drink waste water according to claim 1, is characterized in that: lime is equipped with in described dosing tank (14) side, and opposite side is equipped with hydrochloric acid.
5. a kind of device removing nitrate in food and drink waste water according to claim 1, is characterized in that: in described catalyst hopper (16), mass percent is housed 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 CN103601335A (en) | 2014-02-26 |
| CN103601335B true 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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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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