CN102060399B - Ammonia nitrogen removing device assisting organic compound denitrifier in treating high concentration ammonia nitrogen wastewater - Google Patents
Ammonia nitrogen removing device assisting organic compound denitrifier in treating high concentration ammonia nitrogen wastewater Download PDFInfo
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- CN102060399B CN102060399B CN 201010566237 CN201010566237A CN102060399B CN 102060399 B CN102060399 B CN 102060399B CN 201010566237 CN201010566237 CN 201010566237 CN 201010566237 A CN201010566237 A CN 201010566237A CN 102060399 B CN102060399 B CN 102060399B
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Abstract
The invention discloses an ammonia nitrogen removing device assisting an organic compound denitrifier in treating high concentration ammonia nitrogen wastewater in industrial wastewater treatment equipment. The device comprises a reaction tank and a denitrifying tower which are communicated with each other, wherein a first drug tank and a second drug tank which are respectively communicated with the reaction tank are arranged on the upper part of the reaction tank; a mixing and agitating device is arranged in the cavity of the reaction tank; multiple layers of ring-shaped water collecting tower plates are arranged in the cavity of the cylindrical denitrifying tower at intervals; the outer edges of the water collecting tower plates are fixed with the inner wall of the denitrifying tower; the inner rings of the water collecting tower plates form a cylindrical hollow gas channel in the middle cavity of the denitrifying tower; an aeration system and a compressed air supply line which are communicated with each other are fixedly arranged on each water collecting tower plate; an overflow plate and a baffle are arranged on each water collecting tower plate; a circular water-carrying channel communicating the water collecting tower plates from bottom to top is arranged between each overflow plate and each baffle; and each overflow plate is connected with a motor via a vertical shaft lever. The device has simple equipment, is simple and convenient to operate and has higher efficiency (over 99.99%) in denitrifying the high concentration ammonia nitrogen wastewater with the ammonia nitrogen concentration of 1000-50000mg/L.
Description
Technical field
What the present invention relates to is a kind of high-concentration ammonia nitrogenous wastewater treatment unit, belongs to the Industrial Wastewater Treatment equipment technical field.
Background technology
It is that pH value with waste water is adjusted to more than 11 that traditional stripping tower removes ammonia nitrogen, bubbling air or steam in packing tower then, through gas-to-liquid contact with in free ammonia stripping to the atmosphere or steam in the waste water; Make ammonia nitrogen transfer to gas phase from liquid phase, adopt stripping tower that pH is had relatively high expectations, it is big to add alkali number; Power consumption is big; The ammonia nitrogen removal frank temperature influence is bigger, and also must combine with biological denitrification process through residue ammonia nitrogen concentration in the waste water behind the secondary stripping just can reach qualified discharge, thereby can only be as the pre-treatment of high-concentration ammonia nitrogenous wastewater processing; Moreover in the stripping process because vapour-liquid ratio big (being everlasting more than the 3000:1); The ammonia that emits absorbs difficulty because concentration is lower, is discharged in the atmosphere and can causes secondary pollution.
It is to utilize the phase concentrations of ammonia nitrogen and the vapor-liquid equilibrium relationship between the liquid concentration that ammonia nitrogen is separated that ammonia still removes ammonia nitrogen; Feed water vapour in the waste water; When vapour pressure surpasses ambient pressure, thereby the effusion process of volatile matter such as ammonia nitrogen has been quickened in the waste water boiling.With stripping tower remove ammonia nitrogen identical be; When ammonia reaches balance in the gas-liquid two-phase, can not continue to make the lasting effusion of ammonia nitrogen in the water; Therefore single gas is carried and can not ammonia nitrogen be removed fully, then can increase cost of investment and running cost greatly if adopt continuous several times gas to carry to carry out denitrogenation.
Therefore, the Treatment of Industrial Water device of existing ammonia nitrogen removal is wanted the labor medicament and the energy, only suitable lower concentration or ammonia nitrogen waste water processing on a small scale, and complex equipments is expensive.Under present technical qualification; Even current state-of-the-art anaerobe denitrification process and equipment, its upper limit of handling ammonia nitrogen also only reaches 1000mg/L, nitric efficiency only about 50%; And for most of nitrogenous trade effluents, ammonia nitrogen concentration is all considerably beyond 1000mg/L in its waste water.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art, what a kind of auxiliary organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water was provided removes the ammonia nitrogen device, and nitric efficiency is high, equipment is simple, easy and simple to handle, processing cost is low.
The technical scheme that the present invention adopts is: comprise the reaction tank and the denitrification column that are interconnected, reaction tank top is the first medicament pond and the second medicament pond that is communicated with it respectively, is provided with a mixed stirring device in the reaction tank inner chamber; Denitrification column is cylindric; Its inner chamber separation multilayer column plate that catchments, the column plate that catchments is annular, and outer and denitrification column inwall are fixed; Interior ring forms columned hollow gas passage at the denitrification column lumen, and hollow gas passage leads to atmospheric ventilator trunk with the denitrification column upper oral part and communicates; Be installed with aerating system and the pressurized air air-supply duct that communicates on the every layer of column plate that catchments, pressurized air air-supply duct top passes denitrification column and links to each other with the air outside compressor; One overflow plate and a baffle plate are set on the every layer of column plate that catchments, between overflow plate and the baffle plate be one be communicated with the every layer of column plate that catchments from bottom to up circle cross aquaporin; Each overflow plate all connects a vertical axostylus axostyle, and the top of vertical axostylus axostyle connects motor; On the pipeline between connected reaction pond and the denitrification column, be provided with pump, pump connects the high pressure spray nozzle at denitrification column top.
Denitrification column of the present invention adopts the plate column plank frame; The gas-liquid separation characteristics have been taken into full account; On every layer of column plate, have certain space in vain and directly communicate, be convenient to the ammonia that stripping comes out and in time discharge, solved ammonia transient equilibrium problem in the gas-liquid two-phase with the intermediate hollow gas passage.Than traditional stripping tower, not only equipment is simple, and is effective, and operation is easy, and nitric efficiency is high, and when total vapour-liquid ratio reduces, greatly strengthened the aeration rate on the column plate, increased gas-liquid mass transfer efficient.Handle greater than the high-concentration ammonia nitrogenous wastewater of 1000～50000mg/L for ammonia nitrogen concentration, nitric efficiency can reach more than 99.99%, and the operation processing costs is 4～8 yuan of waste water per ton, has both reduced running cost and power consumption, has improved treatment capacity again.Being particularly useful for industry high-concentration ammonia nitrogenous wastewaters such as Coal Chemical Industry, pharmacy, coking, oil refining handles.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the enlarged view of overlooking of column plate 2-4 of catchmenting among Fig. 1;
Among the figure: 1. reaction tank; 1-1. the first medicament pond; 1-2. the second medicament pond; 1-3. liquid meter; 1-4. perforate; 1-5.pH meter; 1-6. mixed stirring device; 1-7. pump; 1-8. air; 2. denitrification column; 2-1. pressurized air air-supply duct; 2-2. high pressure spray nozzle; 2-3. motor; The column plate 2-4. catchment; 2-5. overflow plate; 2-6. baffle plate; 2-7. cross aquaporin; 2-8. ventilator trunk; 2-9. defoaming compartment; 2-10. aerating system; 2-11. outlet mouth; 2-12. hollow gas passage.
Embodiment
Like Fig. 1, the present invention includes reaction tank 1 and denitrification column 2, be interconnected through pipeline between reaction tank 1 and the denitrification column 2.Two medicament ponds are arranged on the top of reaction tank 1, and the first medicament pond 1-1 and the second medicament pond 1-2 through pipeline connected reaction pond 1, respectively install a liquid meter 1-3 respectively on the pipeline between two medicament ponds and the reaction tank 1.A mixed stirring device 1-6 is set in reaction tank 1 inner chamber, the liquid in the reaction tank 1 is stirred.On the upper wall of reaction tank 1, open a perforate 1-4, perforate 1-4 is communicated with the ventilator trunk 2-8 of denitrification column 2 upper oral parts through pipeline.Reaction tank 1 an external pH meter 1-5 stretches in the reaction tank 1 pH meter 1-5, the pH value of mixed solution in the online detection reaction pond 1.On the pipeline between connected reaction pond 1 and the denitrification column 2, pump 1-7 is set, pump 1-7 is located at the high pressure spray nozzle 2-2 at denitrification column 2 tops with pipe connection.
Denitrification column 2 is cylindric, its inner chamber separation the multilayer column plate 2-4 that catchments, catchment column plate 2-4 denitrification column 2 inner chambers be the gallery formula around; As shown in Figure 2; The column plate 2-4 that catchments is annular, and the outer of the column plate 2-4 that catchments is fixed on denitrification column 2 inwalls, and the interior ring of the column plate 2-4 that catchments forms columned hollow gas passage 2-12 at denitrification column 2 lumens; This hollow gas passage 2-12 directly communicates with the ventilator trunk 2-8 of upper oral part, and ventilator trunk 2-8 leads in the atmosphere.The catchment external diameter of column plate 2-4 and the ratio of internal diameter, the external diameter of the column plate 2-4 that also promptly catchments and the diameter ratio of hollow gas passage 2-12 are 1.5:1～2.2:1.
All be installed with independently aerating system 2-10 and pressurized air air-supply duct 2-1 at every layer on catchmenting column plate 2-4; Pressurized air air-supply duct 2-1 is communicated with aerating system 2-10; Pressurized air air-supply duct 2-1 extends up on the column plate 2-4 that catchments of the superiors from the column plate 2-4 that catchments of denitrification column 2 lowest layers; And be up-small and down-big coniform, cone angle is 75 °.The top of pressurized air air-supply duct 2-1 passes denitrification column 2, and is connected with denitrification column 2 air outside compressor 1-8.
Referring to Fig. 1 and 2; For fear of handling the short stream of waste water, improve the continuity of wastewater treatment, an overflow plate 2-5 and a baffle plate 2-6 are set at every layer on catchmenting column plate 2-4; Baffle plate 2-6 is than the high 10～20cm of overflow plate 2-5, and between baffle plate 2-6 and the overflow plate 2-5 at a distance of 30～50cm.Be that a circular aquaporin 2-7 that crosses is communicated with the every layer of column plate 2-4 that catchments from bottom to up between overflow plate 2-5 and baffle plate 2-6.
Each overflow plate 2-5 all connects a vertical axostylus axostyle, and the top of vertical axostylus axostyle connects motor 2-3, and motor 2-3 is fixed on denitrification column 2 upper positions.Under the Spin Control of motor 2-3, drive overflow plate 2-5 on the column plate 2-4 that catchments freely closed with stagger.
The column plate 2-4 top of catchmenting in the middle layer is provided with defoaming compartment 2-9, eliminates the excess foam that waste water produces owing to organic compound denitrfying agent in treating processes.Have outlet mouthful 2-11 in the bottom of denitrification column 2.
As required, the present invention is when the treatment of high concentration ammonia nitrogen waste water, for the ammonium salt in the waste water is converted into free ammonia more fully; In the first medicament pond 1-1 and the second medicament pond 1-2, add organic compound denitrfying agent and alkali respectively, the amount of organic compound denitrfying agent and alkali has liquid meter 1-3 control, gets in the reaction tank 1; Fully stir and react the back and pending waste water is delivered to the cat head of denitrification column 2 by mixed stirring device 1-6 with pump 1-7; Penetrate through high pressure spray nozzle 2-2 again, form waterfall and drop on the column plate 2-4 that catchments, through the countercurrent flow of gas-liquid; Air constantly contacts on the column plate 2-4 surface of catchmenting with waste water; Behind abundant gas-liquid mass transfer and aerated reaction, the ammonia nitrogen in the waste water constantly is discharged in the gas, from hollow gas passage 2-12 discharging; Last treating water is discharged from the water outlet 2-11 of bottom, and ammonia nitrogen removes fully in the realization waste water.In this process, air is transported among every layer of aerating system 2-10 on the column plate 2-4 that catchments through pressurized air air-supply duct 2-1 by air 1-8, and the vapour-liquid ratio of feeding carries out the multilayer perforated pipe aerating regulation less than 500, has strengthened removing treatment effect.
Claims (6)
1. an organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water removes the ammonia nitrogen device; Comprise the reaction tank (1) and the denitrification column (2) that are interconnected; It is characterized in that: reaction tank (1) top is the first medicament pond (1-1) and the second medicament pond (1-2) that is communicated with it respectively, is provided with a mixed stirring device (1-6) in reaction tank (1) inner chamber; Denitrification column (2) is cylindric; Its inner chamber separation multilayer column plate (2-4) that catchments; The column plate (2-4) that catchments is annular; Outer and denitrification column (2) inwall is fixed, and interior ring forms columned hollow gas passage (2-12) at denitrification column (2) lumen, and hollow gas passage (2-12) leads to atmospheric ventilator trunk (2-8) with denitrification column (2) upper oral part and communicates; Be installed with the aerating system (2-10) and the pressurized air air-supply duct (2-1) that communicate on the every layer of column plate that catchments (2-4), pressurized air air-supply duct (2-1) top passes denitrification column (2) and links to each other with air outside compressor (1-8); One overflow plate (2-5) and a baffle plate (2-6) are set on the every layer of column plate that catchments (2-4), between overflow plate (2-5) and the baffle plate (2-6) be one be communicated with the every layer of column plate that catchments (2-4) from bottom to up circle cross aquaporin (2-7); Each overflow plate (2-5) all connects a vertical axostylus axostyle, and the top of vertical axostylus axostyle connects motor (2-3); On the pipeline between connected reaction pond (1) and the denitrification column (2), be provided with pump (1-7), pump (1-7) connects the high pressure spray nozzle (2-2) at denitrification column (2) top.
2. organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water according to claim 1 remove the ammonia nitrogen device, it is characterized in that: baffle plate (2-6) exceeds overflow plate (2-5) 10～20cm, and both are at a distance of 30～50cm.
3. organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water according to claim 1 remove the ammonia nitrogen device; It is characterized in that: pressurized air air-supply duct (2-1) extends up on the column plate that catchments (2-4) of the superiors from the column plate that catchments (2-4) of denitrification column (2) lowest layer; And be up-small and down-big coniform, cone angle is 75 °.
4. organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water according to claim 1 remove the ammonia nitrogen device, it is characterized in that: the catchment ratio of external diameter and internal diameter of column plate (2-4) of annular is 1.5:1～2.2:1.
5. organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water according to claim 1 remove the ammonia nitrogen device, it is characterized in that: the said column plate that catchments (2-4) top that is positioned at the middle layer is provided with defoaming compartment (2-9).
6. organic compound denitrfying agent treatment of high concentration ammonia nitrogen waste water according to claim 1 remove the ammonia nitrogen device, it is characterized in that: the external pH meter of reaction tank (1) (1-5).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010566237 CN102060399B (en) | 2010-11-30 | 2010-11-30 | Ammonia nitrogen removing device assisting organic compound denitrifier in treating high concentration ammonia nitrogen wastewater |
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| CN 201010566237 CN102060399B (en) | 2010-11-30 | 2010-11-30 | Ammonia nitrogen removing device assisting organic compound denitrifier in treating high concentration ammonia nitrogen wastewater |
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| CN102060399B true CN102060399B (en) | 2012-12-26 |
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| CN104230047A (en) * | 2014-08-26 | 2014-12-24 | 常州大学 | Middle/high concentration ammonia nitrogen device for treating etching wastewater of circuit board by using surface active catalyst |
| CN104909425B (en) * | 2015-05-25 | 2017-01-25 | 常州大学 | Method used for treating high concentration ammonia nitrogen in metallurgical waste water |
| CN113149284B (en) * | 2021-04-30 | 2022-10-04 | 南通汇羽丰新材料有限公司 | Device and method for reducing ammonia nitrogen in PVDC resin production wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2665110Y (en) * | 2003-09-19 | 2004-12-22 | 北京市肇麟环境技术开发公司 | Urban domestic refuse sanitation burying landfill leachate ammonia nitrogen removing apparatus |
| CN2868380Y (en) * | 2005-10-27 | 2007-02-14 | 陈平 | Degassing tower |
| CN101428889A (en) * | 2008-11-28 | 2009-05-13 | 江苏工业学院 | Treatment method for removing ammonia nitrogen from wastewater |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004008913A (en) * | 2002-06-06 | 2004-01-15 | Hitachi Zosen Corp | Method of recovering nitrogen from sewage |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2665110Y (en) * | 2003-09-19 | 2004-12-22 | 北京市肇麟环境技术开发公司 | Urban domestic refuse sanitation burying landfill leachate ammonia nitrogen removing apparatus |
| CN2868380Y (en) * | 2005-10-27 | 2007-02-14 | 陈平 | Degassing tower |
| CN101428889A (en) * | 2008-11-28 | 2009-05-13 | 江苏工业学院 | Treatment method for removing ammonia nitrogen from wastewater |
Non-Patent Citations (3)
| Title |
|---|
| JP特开2004-8913A 2004.01.15 |
| 复合脱氮剂-吹脱法处理高浓度氨氮废水试验研究;雷春生等;《科学通报》;20091130;第54卷(第22期);第3565-3569页 * |
| 雷春生等.复合脱氮剂-吹脱法处理高浓度氨氮废水试验研究.《科学通报》.2009,第54卷(第22期),第3565-3569页. |
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Effective date of registration: 20150928 Address after: Daitou town of Liyang City Ferry Street 213311 Jiangsu city of Changzhou province 8-2 No. 7 Patentee after: Liyang Chang Technology Transfer Center Co., Ltd. Address before: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1 Patentee before: Changzhou University |