CN104944654A - Dielectric barrier discharge water treatment reactor and method for treating waste water by adopting same - Google Patents
Dielectric barrier discharge water treatment reactor and method for treating waste water by adopting same Download PDFInfo
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- CN104944654A CN104944654A CN201510340550.2A CN201510340550A CN104944654A CN 104944654 A CN104944654 A CN 104944654A CN 201510340550 A CN201510340550 A CN 201510340550A CN 104944654 A CN104944654 A CN 104944654A
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Abstract
The invention discloses a dielectric barrier discharge water treatment reactor. A discharge tube is arranged inside a cylinder body of the reactor; a spiral spring is arranged on the inner wall of the discharge tube and serves as a high voltage electrode; aluminum foil is tightly clung to the outer wall of the discharge tube and serves as a grounding electrode; the lower end of the discharge tube is connected to an aerator; a flange plate is arranged at the upper end of the discharge tube and is connected with an air pump through an air supply pipeline; a peristaltic pump is used for supplying water to the cylinder body of the reactor. The method for treating waste water using the dielectric barrier discharge water treatment reactor mainly includes the following steps: adding activated carbon into the cylinder body of the reactor, using the peristaltic pump to pump waste water into the cylinder body, starting the air pump to enable the aerator of the discharge tube to perform aeration, stirring the activated carbon and waste water in the cylinder body for an adsorption reaction, starting an AC power supply, measuring the effluent concentration, and discharging the treated waste water. Repeating the steps can realize recycle of the activated carbon and continuous treatment of waste water. The reactor provided by the invention is simple in structure, convenient to operate, and quick and efficient in treatment of organic waste water, and can realize in-situ regeneration of the activated carbon.
Description
Technical field
The invention belongs to environmental technology field, be related specifically to a kind of water processing reactor and process method for waste water thereof.
Background technology
Along with the development of China's process of industrialization, the wastewater flow rate that all trades and professions give off constantly increases, and composition more sophisticated, exacerbates environmental pollution, also day by day serious to the harm of human health.Especially the industry waste discharge such as oil, chemical industry, printing and dyeing, pharmacy, papermaking contains the organic pollutant of multiple poisonous, harmful, difficult degradation, adopts conventional biology or physical chemistry treatment process to be difficult to meet discharge and technical requirements.
Gac has very flourishing internal pore structure and larger specific surface area, high adsorption capacity, and its source is easy to get relatively, and relative inexpensiveness, is one of a kind of the most frequently used sorbent material, is widely used in environment protection.But along with the range of application of gac is increasingly extensive, consumption also increases sharply, and the waste active carbon amount produced in application process is many, if do not reclaimed activation recycling, not only can cause a kind of waste to resource, also can cause secondary pollution to environment simultaneously.Therefore, no matter be consider from economy or the angle of environmental protection, promote regeneration of activated carbon all necessary.But traditional regeneration of activated carbon generally needs gac to carry out dystopy regeneration after absorption, the recycling process of gac is made to become complicated and add process cost.
Over nearly 20 years, the low-temperature plasma that geseous discharge produces obtains applying more and more widely, and plasma treatment technique arises at the historic moment.And dielectric barrier discharge under atmospheric pressure can produce stable plasma body, be particularly suitable for the industrial applications of low-temperature plasma.Its discharge plasma produced can produce the active substance of high density, as O
3, O, OH etc., oxidable process organic pollutant, and can regeneration of activated carbon process be carried out.As the pulsed discharge plasma method for regenerating activated carbon that publication number is the Introduction To Cn Patent of CN 104475068A, after charcoal absorption is saturated, first need to carry out oven dry to saturated activity charcoal to anhydrate process, moved to again in the middle of discharge reactor and carried out manipulation of regeneration, then again gac is taken out and adsorb again.In addition, publication number be CN 100398194 C, CN 101530784 the Chinese patent of A and CN 102059106 B describe the method utilizing dielectric barrier discharge regenerated carbon respectively, wherein charcoal absorption saturated after, also move in the middle of regeneration of activated carbon reactor after all needing to be processed again and carry out electric discharge reactivating process, after process, transfer is adsorbed again again.Method due to above patent Introduction is all carry out dystopy regeneration to waste active carbon, and the pilot process of gac recycling adds and shifts out and move into two processes, and consuming time and cost increases thereupon, and makes technical process more complicated.
Summary of the invention
The object of the present invention is to provide a kind of can simplify gac water treatment utilize flow process, realize the method for the efficient process of waste water and the dielectric barrier discharge water processing reactor of gac quick in situ regeneration and process waste water thereof.These four steps of water inlet, charcoal absorption, dielectric barrier discharge water treatment and water outlet are mainly placed in the middle of same reactor by the present invention, realize the absorption in gac water treatment applications and regeneration.
Dielectric barrier discharge water processing reactor of the present invention, it comprises AC power, airing system, waterworks and reactor.Described reactor comprises reactor shell and discharge tube, and cylindrical shell is synthetic glass material, and the bottom of this cylindrical shell is provided with water port, establishes discharge tube in this cylindrical shell; Discharge tube is quartz glass tube, and in discharge tube, be provided with stainless steel whisker as high voltage electrode, discharge tube outer wall is glued with aluminium foil as ground electrode, and discharge tube lower end is connected with aeration head, and discharge tube upper end is provided with ring flange; Described AC power is connected with the stainless steel whisker in discharge tube by above-mentioned ring flange; Described airing system comprises pneumatic pump and spinner-type flowmeter, and one end of supply air line is connected with pneumatic pump, establishes spinner-type flowmeter in the middle of supply air line, and the other end of this supply air line is connected with above-mentioned discharge tube by above-mentioned ring flange; Described waterworks is peristaltic pump, and this peristaltic pump is connected with above-mentioned reactor shell by pipeline.
The method of above-mentioned dielectric barrier discharge water processing reactor process waste water is adopted to comprise the steps:
(1) intake: the granulated active carbon first added in the middle of reactor shell, then by peristaltic pump, organic waste water is pumped in the middle of reactor shell by waterworks, reach cylindrical shell when maximum water treatment amount is set, close peristaltic pump;
(2) charcoal absorption: start airing system, ventilate in discharge tube with pneumatic pump, control air flow quantity by spinner-type flowmeter, make the aeration head of discharge tube carry out aeration, gac in stirring cylindrical shell and waste water carry out absorption reaction, until charcoal absorption is saturated;
(3) discharge process: start AC power, produce dielectric barrier discharge, supply frequency is 7kHz, the active substance that electric discharge produces enters in the middle of waste water by aeration head, fully contact with waste water and saturated activity charcoal, the contaminant remaining in degrading waste water, and the pollutent of degrading activity charcoal absorption, gac is regenerated, reaches the object simultaneously realizing wastewater treatment and regeneration of activated carbon;
(4) water outlet: determine water concentration, after reaching emission standard, opens reactor shell lower drain port, is discharged by the waste water after process.
Above four steps are a complete water treatment procedure, repeat above four steps, can realize the recycle of gac and the continuous process of waste water.
This reactor for treatment is to liking organic waste water or other sewage.
The present invention compared with prior art tool has the following advantages:
1, structure of reactor is simple, convenient operation and management;
2, the impact of conductivity of waste water on discharge condition can be eliminated, then ensure that discharge condition occurs continually and steadily;
3, rapidly and efficiently can process organic waste water, in-situ regeneration gac, simplifies regeneration of activated carbon technical process, achieves the efficiency utilization of activated Carbon Water Treatment simultaneously; And handling object can expand other polytype trade effluents, sanitary sewage and pending tap water to.
Accompanying drawing explanation
Fig. 1 is dielectric barrier discharge water processing reactor structural representation sketch of the present invention.
Fig. 2 is dielectric barrier discharge tubular construction simplified schematic diagram of the present invention.
In figure: 1 AC power; 2 pneumatic pumps; 3 spinner-type flowmeters; 4 peristaltic pumps; 5 reactors; 6 reactor shells; 7 water port; 8 discharge tubes; 9 stainless steel whiskers; 10 aluminium foils; 11 aeration heads; 12 ring flanges.
Embodiment
In the dielectric barrier discharge water processing reactor schematic diagram shown in Fig. 1 and 2, reactor shell 6 is synthetic glass material, the bottom of this cylindrical shell is provided with water port 7, discharge tube 8 is established in this cylindrical shell, discharge tube is quartz glass tube, stainless steel whisker 9 is provided with as high voltage electrode in discharge tube, discharge tube outer wall is glued with aluminium foil 10 as ground electrode, discharge tube lower end is connected 11 with aeration head, discharge tube upper end is provided with ring flange 12, AC power 1 is connected with the stainless steel whisker in discharge tube by above-mentioned ring flange, one end of supply air line is connected with pneumatic pump 2, spinner-type flowmeter 3 is established in the middle of supply air line, the other end of this supply air line is connected with above-mentioned discharge tube by above-mentioned ring flange, peristaltic pump 4 is connected with above-mentioned reactor shell by pipeline.
The present embodiment adopts high-frequency ac power to power, and reactor shell adopts internal diameter to be 500mm, and thick is 30mm and the high plexi-glass tubular for 1000mm, quartz glass tube 8 internal diameter 130mm, thick 5mm, long 100mm, arrange in silica tube that screw diameter is the stainless steel spring of 130mm, long 1300mm.
The method of above-mentioned dielectric barrier discharge water processing reactor process waste water is adopted to comprise the steps:
(1) intake: the 500g granulated active carbon first added in reactor shell, then pump in the middle of reactor shell by waterworks by the phenolic waste water that 200L concentration is 500mg/L by pump, close pump;
(2) charcoal absorption: start pneumatic pump and ventilate in discharge tube, controlling air flow quantity by spinner-type flowmeter is 20L/min, the aeration head of discharge tube is made to carry out aeration, gac in stirring cylindrical shell and waste water carry out absorption reaction, waste strength before and after absorption is measured in different time points, understand charcoal absorption situation, after 6h, to reach absorption saturated for gac;
(3) discharge process: start high-frequency ac power, adjustment supply frequency is 7kHz, and voltage effective value is 7kV, and discharge tube produces stable discharge condition, and discharge time is 20min.
(4) water outlet: determine water concentration, measuring phenol degrading rate is 95%, then opens cylindrical shell lower drain port, is discharged by the phenolic waste water after process;
Regeneration of activated carbon rate measures: gac after regeneration is adsorbed 6h again with similarity condition, and measure adsorption efficiency, calculated activity charcoal regeneration rate, recording regeneration rate is 90%.
Claims (3)
1. a dielectric barrier discharge water processing reactor, it comprises AC power, airing system, waterworks and reactor, it is characterized in that: described reactor comprises reactor shell and discharge tube, reactor shell bottom is provided with water port, establishes discharge tube in this reactor shell; In discharge tube, be provided with stainless steel whisker as high voltage electrode, discharge tube outer wall is glued with aluminium foil as ground electrode, and discharge tube lower end is connected with aeration head, and discharge tube upper end is provided with ring flange; Described AC power is connected with the stainless steel whisker in discharge tube by above-mentioned ring flange; Described airing system comprises pneumatic pump and spinner-type flowmeter, and one end of supply air line is connected with pneumatic pump, establishes spinner-type flowmeter in the middle of supply air line, and the other end of this supply air line is connected with above-mentioned discharge tube by above-mentioned ring flange; Described waterworks is peristaltic pump, and this peristaltic pump is connected with above-mentioned reactor shell by pipeline.
2. dielectric barrier discharge water processing reactor according to claim 1, is characterized in that: described cylindrical shell is synthetic glass material, and described discharge tube is quartz glass tube.
3. adopt the method for dielectric barrier discharge water processing reactor process waste water according to claim 1, it is characterized in that: it comprises the steps:
(1) intake: the granulated active carbon first added in the middle of reactor shell, then by peristaltic pump, organic waste water is pumped in the middle of reactor shell by waterworks, reach cylindrical shell when maximum water treatment amount is set, close peristaltic pump;
(2) charcoal absorption: start airing system, ventilate in discharge tube with pneumatic pump, control air flow quantity by spinner-type flowmeter, make the aeration head of discharge tube carry out aeration, gac in stirring cylindrical shell and waste water carry out absorption reaction, until charcoal absorption is saturated;
(3) discharge process: start AC power, produce dielectric barrier discharge, supply frequency is 7kHz, the active substance that electric discharge produces enters in the middle of waste water by aeration head, fully contact with waste water and saturated activity charcoal, the contaminant remaining in degrading waste water, and the pollutent of degrading activity charcoal absorption, gac is regenerated, reaches the object simultaneously realizing wastewater treatment and regeneration of activated carbon;
(4) water outlet: determine water concentration, after reaching emission standard, opens cylindrical shell bottom water vent, is discharged by the waste water after process;
Above four steps are a complete water treatment procedure, repeat above four steps, can carry out the recycle of gac and the continuous process of waste water.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186172A (en) * | 2016-09-22 | 2016-12-07 | 山东理工大学 | A kind of method activating hydrogen persulfate salt treatment waste water |
| CN106395973A (en) * | 2016-08-29 | 2017-02-15 | 张少强 | Method for treating cyanogen-containing electroplating wastewater by using dielectric barrier discharge plasma technology |
| CN107459098A (en) * | 2017-09-06 | 2017-12-12 | 中钢集团鞍山热能研究院有限公司 | A kind of Air-oil mixing film low temperature plasma method of wastewater treatment and device |
| CN107459099A (en) * | 2017-09-06 | 2017-12-12 | 中钢集团鞍山热能研究院有限公司 | A kind of gas-liquid mixed film low temperature plasma method of wastewater treatment and device |
| CN108751278A (en) * | 2018-05-30 | 2018-11-06 | 盐城工学院 | A kind of process for purification and equipment of phenol wastewater |
| CN109133251A (en) * | 2018-09-29 | 2019-01-04 | 江苏环保产业技术研究院股份公司 | A kind of plasma body cooperative activated carbon fibre removes the device of herbicide in water removal |
| CN109592826A (en) * | 2018-12-24 | 2019-04-09 | 中国市政工程中南设计研究总院有限公司 | A kind of device and method reducing incretion interferent |
| CN110040885A (en) * | 2019-04-29 | 2019-07-23 | 安徽理工大学 | A kind of process of low-temperature plasma synergistic adsorbent purification benzoic acid waste water |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395973A (en) * | 2016-08-29 | 2017-02-15 | 张少强 | Method for treating cyanogen-containing electroplating wastewater by using dielectric barrier discharge plasma technology |
| CN106186172A (en) * | 2016-09-22 | 2016-12-07 | 山东理工大学 | A kind of method activating hydrogen persulfate salt treatment waste water |
| CN107459098A (en) * | 2017-09-06 | 2017-12-12 | 中钢集团鞍山热能研究院有限公司 | A kind of Air-oil mixing film low temperature plasma method of wastewater treatment and device |
| CN107459099A (en) * | 2017-09-06 | 2017-12-12 | 中钢集团鞍山热能研究院有限公司 | A kind of gas-liquid mixed film low temperature plasma method of wastewater treatment and device |
| CN107459099B (en) * | 2017-09-06 | 2024-02-02 | 中钢集团鞍山热能研究院有限公司 | Gas-liquid mixed film low-temperature plasma wastewater treatment method and device |
| CN107459098B (en) * | 2017-09-06 | 2024-02-02 | 中钢集团鞍山热能研究院有限公司 | Gas-liquid two-phase film low-temperature plasma wastewater treatment method and device |
| CN108751278A (en) * | 2018-05-30 | 2018-11-06 | 盐城工学院 | A kind of process for purification and equipment of phenol wastewater |
| CN109133251A (en) * | 2018-09-29 | 2019-01-04 | 江苏环保产业技术研究院股份公司 | A kind of plasma body cooperative activated carbon fibre removes the device of herbicide in water removal |
| CN109592826A (en) * | 2018-12-24 | 2019-04-09 | 中国市政工程中南设计研究总院有限公司 | A kind of device and method reducing incretion interferent |
| CN110040885A (en) * | 2019-04-29 | 2019-07-23 | 安徽理工大学 | A kind of process of low-temperature plasma synergistic adsorbent purification benzoic acid waste water |
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Application publication date: 20150930 |