CN103570196B - Device for removing high-concentration ammonia nitrogen from oil refining wastewater by using surfactant - Google Patents

Device for removing high-concentration ammonia nitrogen from oil refining wastewater by using surfactant Download PDF

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Publication number
CN103570196B
CN103570196B CN201310564420.8A CN201310564420A CN103570196B CN 103570196 B CN103570196 B CN 103570196B CN 201310564420 A CN201310564420 A CN 201310564420A CN 103570196 B CN103570196 B CN 103570196B
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water
ammonia nitrogen
tensio
active agent
tank
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CN103570196A (en
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雷春生
赵远
石雅琴
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Haining Economic Development Industrial Park Development and Construction Co., Ltd
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Changzhou University
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Abstract

The invention relates to a device for removing high-concentration ammonia nitrogen from oil refining wastewater by using a surfactant, and belongs to the field of sewage treatment. The device consists of a lifting pump (1), an electric control device (2), a stirrer (3), a wastewater tank (4), a filter screen (5), an oil separation tank (6), an oil-water separator (7), an air floatation tank (8), a water passing pipe (9), a bucket grid (10), an MBR (membrane biological reactor) (11), a liquid level meter (12), a membrane component (13), an anoxic tank (14), a chemical liquid tank (15), a water storage column (16) and an air compressor (17), wherein the membrane component is a hollow fiber membrane component, and is high in hydrophilicity and low in yarn breaking rate. According to the device, the production cost is lowered, the wastewater discharge of an oil refining enterprise is reduced, the removal rate of the ammonia nitrogen from the treated wastewater is increased from original 67.8 to 82.4 percent to more than 99.8 percent, and environmental pollution is reduced.

Description

Ammonia nitrogen in high density device is removed in tensio-active agent refinery water
Technical field
The invention discloses in tensio-active agent refinery water and remove ammonia nitrogen in high density device, belong to sewage treatment area.
Background technology
Refinery water is the polluted water not directly utilized produced in oil-refining chemical industry production, operational process, ammonia nitrogen containing high density in waste water, excessive ammonia nitrogen enters water body will cause body eutrophication, reduce water body ornamental value, and the NO3-N and NO2-N of oxidized generation also can affect hydrobiont even human health.
At present, the method utilizing catalyst effect to make high-concentration ammonia nitrogen in waste water change into nitrogen becomes possibility, such as: Lee fish, the one that Zhang Rong etc. describe in document " ammonia nitrogen in Co_Bi catalyst wet oxidation degraded percolate " processes high-concentration ammonia nitrogenous wastewater with Co/Bi catalyzer, ammonia is converted into nitrogen discharge, but need high temperature 125 ~ 320 DEG C, just katalysis is played under high pressure 0.5 ~ 2.0MPa condition, this certainly will cause the huge consumption of the energy, the processing costs brought thus is too expensive, cannot run in reality generates.Traditional ammonia still process method take water vapour as stripping medium, but need strong basicity environment simultaneously, and the ammonia nitrogen in waste water is with NH 3form drain in air, easily cause secondary pollution risk, in order to eliminate the secondary pollution brought environment, people generally adopt H 2o or dilute sulphuric acid absorb ammonia, but this product utilizing absorption treatment process to obtain is impure, and concentration is too low, does not have marketable value, remains a kind of waste water also existed with ammonia nitrogen in high density.
Summary of the invention
The object of the invention is to the deficiency for prior art scheme, provide in tensio-active agent refinery water and remove ammonia nitrogen in high density device, solve in prior art and pollute greatly, cost is high, the problem that ammonia nitrogen removal frank is low.
In order to achieve the above object, concrete technical scheme of the present invention is: removing ammonia nitrogen in high density device in tensio-active agent refinery water is be made up of lift pump (1), electric control gear (2), agitator (3), wastewater disposal basin (4), filtering net (5), oil trap (6), water-and-oil separator (7), air flotation pool (8), water service pipe (9), basket grid (10), MBR reaction tank (11), liquidometer (12), membrane module (13), anoxic pond (14), spray tank (15), water post (16), air compressor (17); Its structure construction is, oil trap (6) upper strata is filtering net (5), and lower floor is water-and-oil separator (7), is connected with wastewater disposal basin (4), air flotation pool (8); Described agitator (3) is positioned at wastewater disposal basin (4) top; MBR reaction tank (11) left side is basket grid (10), and the right is membrane module (13), and below is provided with liquidometer (12), and top is connected with anoxic pond (14).
Described filtering net (5) is 100-120 order filter screen; Water-and-oil separator (7) is 140-160 order filter screen.
Described basket grid (10) gap is 15-30mm, and crossing grid current speed is 0.6-1.0m/s, every day grid quantity of slag 0.15-0.45m 2.
Described MBR reaction tank (11) pH value is at 6-8, minimum through water yield 31.0m 3/ d.
What described membrane module (13) adopted is hollow fiber film assembly, and membrane pore size is 0.1 ~ 0.2 μm, and film internal diameter is 320 ~ 350 μm, and membranous wall is thick is 40 ~ 50 μm, membrane flux 12-15L/m 2h, working pressure 1.55Mpa.
Described anoxic pond (14) carries out denitrification denitrogenation, and dissolved oxygen controls at 0.2-0.5mg/l, and time controling is at about 2.0h; Spray tank (15) medicine liquid ingredient is tensio-active agent dioctyl succinate disulfonate acid.
[0011] principle of work of the present invention is: agitator (3) is positioned at wastewater disposal basin (4) top, even in order to ensure the water quality of wastewater disposal basin (4), the waste water be stirred particle screen selecting first in filtering net (5) is for 100-120 order filter screen, the waste water filtered through filtering net (5) flows into oil trap (6), effective separating heavy greasy dirt and sewage in water-and-oil separator (7) is for 140-160 order filter screen, separating obtained sewage passes through water service pipe (9) again through basket grid (10), that to cut resistance in order to secondary remaining in suspending or the solid pollutant of levitated state, in order to avoid blocking MBR reaction tank (11), MBR reaction tank (11) is because of its effective crown_interception, generation cycle longer microorganism can be retained, can realize deep purification of waste water, Simultaneous Nitrification bacterium can fully breed in system, its nitrification effect is obvious, possibility is provided to advanced nitrogen, for ammonia nitrogen removal provides basis below, what membrane module (13) adopted is hollow fiber film assembly, wetting ability is strong, not easily fracture of wire, air compressor (17) carries out aeration in MBR reaction tank (11), liquidometer (12) controls the size of aeration rate, waste water in process enters anoxic pond (14) by water service pipe (9), anoxic pond (14) is denitrification ammonia nitrogen removal, dissolved oxygen controls at 0.2-0.5mg/l, time controling is at about 2.0h, because anoxic pond (14) is also provided with spray tank (15), spray tank (15) medicine liquid ingredient is tensio-active agent, surfactant component is dioctyl succinate disulfonate acid, tensio-active agent more efficiently makes the waste water deammoniation nitrogen rate in process rise to more than 99.8% from 67.8-82.4% in the past.
Significant advantage of the present invention is:
(1) tensio-active agent in spray tank is practical in anoxic pond denitrification ammonia nitrogen removal, efficient;
(2) membrane module adopted is hollow fiber film assembly, and wetting ability is strong, not easily fracture of wire;
(3) this device saves production cost, and for oil refining enterprise decreases the quantity discharged of waste water, also mitigates the pollution to environment.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention
Wherein: 1 lift pump, 2 electric control gears, 3 agitators, 4 wastewater disposal basins, 5 filtering nets, 6 oil traps, 7 water-and-oil separators, 8 air flotation pools, 9 water service pipes, 10 basket grids, 11MBR reaction tank, 12 liquidometers, 13 membrane modules, 14 anoxic pond, 15 spray tanks, 16 water posts, 17 air compressor.
Embodiment
Below in conjunction with drawings and Examples, technical solution of the present invention is further illustrated.
As shown in Figure 1, the invention provides in tensio-active agent refinery water and remove ammonia nitrogen in high density device, be made up of lift pump (1), electric control gear (2), agitator (3), wastewater disposal basin (4), filtering net (5), oil trap (6), water-and-oil separator (7), air flotation pool (8), water service pipe (9), basket grid (10), MBR reaction tank (11), liquidometer (12), membrane module (13), anoxic pond (14), spray tank (15), water post (16), air compressor (17); Described oil trap (6) upper strata is filtering net (5), and lower floor is water-and-oil separator (7), is connected with wastewater disposal basin (4), air flotation pool (8); Described agitator (3) is positioned at wastewater disposal basin (4) top; Described MBR reaction tank (11) left side is basket grid (10), and the right is membrane module (13), and below is provided with liquidometer (12), and top is connected with anoxic pond (14); Described filtering net (5) is 120 order filter screens; Described water-and-oil separator (7) is 160 order filter screens, and described basket grid (10) gap is 15mm, and crossing grid current speed is 0.6m/s, every day grid quantity of slag 0.25m 2, described MBR reaction tank (11) pH value 8, through water yield 31.0m 3/ d, what described membrane module (13) adopted is hollow fiber film assembly, and membrane pore size is 0.2 μm, and film internal diameter is 350 μm, and membranous wall is thick is 50 μm, membrane flux 15L/m 2h, working pressure 1.55Mpa, described anoxic pond (14) carries out denitrification denitrogenation, and dissolved oxygen controls at 0.5mg/l, and time controling is at 2.0h; Described spray tank (15) medicine liquid ingredient is tensio-active agent, and surfactant component is dioctyl succinate disulfonate acid.
When a kind of tensio-active agent high strength of the present invention dispersion method process RE waste water middle and high concentration ammonia nitrogen device uses, agitator (3) is positioned at wastewater disposal basin (4) top, even in order to ensure the water quality of wastewater disposal basin (4), the waste water be stirred is particle screen selecting first in 120 order filter screens at filtering net (5), the waste water filtered through filtering net (5) flows into oil trap (6), be effective separating heavy greasy dirt and sewage in 160 order filter screens at water-and-oil separator (7), separating obtained sewage passes through water service pipe (9) again through basket grid (10), that to cut resistance in order to secondary remaining in suspending or the solid pollutant of levitated state, in order to avoid blocking MBR reaction tank (11), MBR reaction tank (11) is because of its effective crown_interception, generation cycle longer microorganism can be retained, can realize deep purification of waste water, Simultaneous Nitrification bacterium can fully breed in system, its nitrification effect is obvious, possibility is provided to advanced nitrogen, for ammonia nitrogen removal provides basis below, what membrane module (13) adopted is hollow fiber film assembly, wetting ability is strong, not easily fracture of wire, air compressor (17) carries out aeration in MBR reaction tank (11), liquidometer (12) controls the size of aeration rate, waste water in process enters anoxic pond (14) by water service pipe (9), anoxic pond (14) is denitrification ammonia nitrogen removal, dissolved oxygen controls at 0.5mg/l, time controling is at 2.0h, because anoxic pond (14) is also provided with spray tank (15), spray tank (15) medicine liquid ingredient is tensio-active agent, surfactant component is dioctyl succinate disulfonate acid, tensio-active agent more efficiently makes the waste water deammoniation nitrogen rate in process rise to more than 99.8% from 67.8-82.4% in the past.
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 (6)

1. remove ammonia nitrogen in high density device in tensio-active agent refinery water, it is characterized in that: this device is made up of lift pump (1), electric control gear (2), agitator (3), wastewater disposal basin (4), filtering net (5), oil trap (6), water-and-oil separator (7), air flotation pool (8), water service pipe (9), basket grid (10), MBR reaction tank (11), liquidometer (12), membrane module (13), anoxic pond (14), spray tank (15), water post (16), air compressor (17); Oil trap (6) upper strata is filtering net (5), and lower floor is water-and-oil separator (7), is connected with wastewater disposal basin (4), air flotation pool (8); Agitator (3) is positioned at wastewater disposal basin (4) top; MBR reaction tank (11) left side is basket grid (10), and the right is membrane module (13), and below is provided with liquidometer (12), and top is connected with anoxic pond (14); Anoxic pond (14) left side is provided with spray tank (15), and spray tank (15) medicine liquid ingredient is tensio-active agent, and surfactant component is dioctyl succinate disulfonate acid.
2. remove ammonia nitrogen in high density device in tensio-active agent refinery water according to claim 1, it is characterized in that: described filtering net (5) is 100-120 order filter screen; Water-and-oil separator (7) is 140-160 order filter screen.
3. remove ammonia nitrogen in high density device in tensio-active agent refinery water according to claim 1, it is characterized in that: described basket grid (10) gap is 15-30mm, crossing grid current speed is 0.6-1.0m/s, every day grid quantity of slag 0.15-0.45m2.
4. remove ammonia nitrogen in high density device in tensio-active agent refinery water according to claim 1, it is characterized in that: described MBR reaction tank (11) pH value is at 6-8, minimum through water yield 31.0m3/d.
5. remove ammonia nitrogen in high density device in tensio-active agent refinery water according to claim 1, it is characterized in that: what described membrane module (13) adopted is hollow fiber film assembly, membrane pore size is 0.1 ~ 0.2 μm, film internal diameter is 320 ~ 350 μm, membranous wall is thick is 40 ~ 50 μm, membrane flux 12-15L/m2h, working pressure 1.55Mpa.
6. remove ammonia nitrogen in high density device in tensio-active agent refinery water according to claim 1, it is characterized in that: described anoxic pond (14) carries out denitrification denitrogenation, and dissolved oxygen controls at 0.2-0.5mg/l, and time controling is at about 2.0h; Spray tank (15) medicine liquid ingredient is tensio-active agent dioctyl succinate disulfonate acid.
CN201310564420.8A 2013-11-14 2013-11-14 Device for removing high-concentration ammonia nitrogen from oil refining wastewater by using surfactant Active CN103570196B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104211215A (en) * 2014-08-26 2014-12-17 常州大学 Device for treating high concentration ammonia nitrogen in metallurgical wastewater by using surface active catalyst
CN104211247A (en) * 2014-08-26 2014-12-17 常州大学 Device for processing high-concentration ammonia nitrogen in rare-earth wastewater by using surfactant

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249499A (en) * 2011-07-13 2011-11-23 达斯玛环境科技(北京)有限公司 Method for biochemically treating and discharging refinery wastewater within controlling index of national standard
CN102718359A (en) * 2012-06-13 2012-10-10 浙江双益环保科技发展有限公司 MBR (membrane bioreactor)-based system and method for oil refining wastewater biochemical treatment and membrane component cleaning method
CN202594915U (en) * 2012-03-01 2012-12-12 贵州绿色环保设备工程有限责任公司 Device for treating high-ammonia nitrogen wastewater
CN103030250A (en) * 2012-12-10 2013-04-10 中国市政工程华北设计研究总院 Reinforced-denitrification MBR (membrane bioreactor) sewage treatment method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102249499A (en) * 2011-07-13 2011-11-23 达斯玛环境科技(北京)有限公司 Method for biochemically treating and discharging refinery wastewater within controlling index of national standard
CN202594915U (en) * 2012-03-01 2012-12-12 贵州绿色环保设备工程有限责任公司 Device for treating high-ammonia nitrogen wastewater
CN102718359A (en) * 2012-06-13 2012-10-10 浙江双益环保科技发展有限公司 MBR (membrane bioreactor)-based system and method for oil refining wastewater biochemical treatment and membrane component cleaning method
CN103030250A (en) * 2012-12-10 2013-04-10 中国市政工程华北设计研究总院 Reinforced-denitrification MBR (membrane bioreactor) sewage treatment method

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Effective date of registration: 20151118

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: Gehu Lake Road Wujin District 213164 Jiangsu city of Changzhou province No. 1

Patentee before: Changzhou University

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Effective date of registration: 20191223

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