CN102115252A - Mechanochemical reductive dechlorination water treatment system - Google Patents

Mechanochemical reductive dechlorination water treatment system Download PDF

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CN102115252A
CN102115252A CN 201110021641 CN201110021641A CN102115252A CN 102115252 A CN102115252 A CN 102115252A CN 201110021641 CN201110021641 CN 201110021641 CN 201110021641 A CN201110021641 A CN 201110021641A CN 102115252 A CN102115252 A CN 102115252A
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reactor
reductive agent
water
reduction dechlorination
treatment system
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CN102115252B (en
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黄�俊
张望
徐夫元
邓述波
余刚
余云飞
杨阳
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Tsinghua University
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Tsinghua University
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Abstract

The invention relates to a mechanochemical reductive dechlorination water treatment system, comprising a reductive dechlorination reactor, a reducing agent dewaterer, a dryer and a mechanochemical reactor which are mutually communicated. When a halogenated pollutant is treated, a reducing agent with low cost is adopted and prepared by the mechanochemical reactor, the yield is high, and the process is simple. In addition, through the combined action of the reducing agent dewaterer, the dryer and the mechanochemical redactor, the reducing agent can also be regenerated, and the reducing agent subjected to surface activation has lossless performance and high reduction efficiency. The system also has the treatment capability for chlorinated organic load with high concentration and ultrahigh concentration, the treatment capability is hardly influenced by pollution loads, and the whole system can not generate other secondary pollutants such as dioxin, and the like due to the adoption of a closed system.

Description

Mechanochemistry reduction dechlorination water treatment system
Technical field
The present invention relates to technical field of sewage, be specifically related to a kind of mechanochemistry reduction dechlorination water treatment system.
Background technology
Chloro organic cpd is the important refractory organics organic compound of a class, has great hazardness.Nearly all chlorinatedorganic is all toxic, and wherein chemical compound lot is considered to have " carcinogenic, teratogenesis, mutagenesis " effect.Not only toxicity is big but also physicochemical property stable for chlorinatedorganic, is difficult to decompose. have in the organic pollutant of Environmental Protection Agency (EPA) specified priority control to be chlorinated organics more than 50%.Contain the chloro organic waste liquid and extensively be present in the industries such as chemical industry, pharmacy, be used for dry-cleaning operation and metal cleaning more as trieline, zellon.Polychlorobiphenyl in the aromatic series (PCBs) is used in tackiness agent, Additive Production and the transformer manufacturing owing to having good chemical stability.Chloro organic cpd uses by volatilization, container leakage, discharge of wastewater, agricultural chemicals and the approach such as burning of chlorinated organics finished product enter environment, severe contamination atmosphere, soil, underground water and surface water.In addition, what extensively adopt now is the method for drinking water disinfect with chlorine, also can produce deleterious chlorinatedorganic.Monitored the existence of chlorinatedorganic in the part urban drinking water of China.On the other hand, most chlorinatedorganics are the artificial-synthetic compound, and chemical property is relatively stable, and existence of chlorine atom has toxicity to microorganism on it, so in the occurring in nature degraded slowly, the environmental hazard cycle is long.As the polychlorobiphenyl transformation period for reaching last 100 years, although disabled in many countries, its trace various places still all over the world.Because they are difficult to biological degradation and poisonous, so adopt common biology, physics and chemical process to be difficult to realize the purpose of detoxification.And the high temperature incineration system is fit to the processing for a small amount of high concentrated organic waste liquid, but for the processing of the chloro organic chemical waste water of a large amount of difficult degradations, incineration system is just no longer suitable.
And utilize zero-valent metal that the halo pollutent is handled is the reductibility that relies on metal, and it implements degraded by the galvanic cell reaction pair, can reduce its bio-toxicity greatly, improves its biodegradability.Present widely used zero-valent metal is the iron filings materials, iron filings, carbonaceous material and scrap metal simply is mixed with the formation metal carbon material capable puts into catalyticreactor.But this catalyzed reaction material is easily surface passivation often, generates passive film and has hindered the carrying out of reduction reaction, caused reduction reaction often the time longer; Add efficiently often preparation system complexity of catalytic reducer, cost is higher.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists, the object of the present invention is to provide a kind of mechanochemistry reduction dechlorination water treatment system, mutual conduction connects in this mechanochemistry reduction dechlorination water treatment system reduction dechlorination reactor, reductive agent water extracter, moisture eliminator and mechanico-chemical reaction device, the reductive agent cost that uses when the halo pollutent is handled is low; Reductive agent is by the preparation of mechanico-chemical reaction device, and manufacture is big and technology is simple; By the acting in conjunction of reductive agent water extracter, moisture eliminator and mechanico-chemical reaction device, reductive agent can also obtain regeneration in addition, and is performance undamaged through the reductive agent of surface active, the reduction efficiency height; This system also has the processing power of high density and ultrahigh concentration chloro organic loading, and the contaminated hardly effects of load of its disposing capacity adds that whole system can not produce other secondary pollutions such as dioxin owing to adopt the system of sealing.
In order to achieve the above object, the technical solution adopted in the present invention is:
A kind of mechanochemistry reduction dechlorination water treatment system, comprise that the surface has the reduction dechlorination reactor 1 of water-in 10 and water outlet 11, the current of this reduction dechlorination reactor 1 bottom are connected with the inlet 13 of reductive agent delivery port 12 by sealing conveying belt 8 and reductive agent water extracter 5, the outlet 14 of reductive agent water extracter 5 is connected with the inlet 15 of moisture eliminator 6, the outlet 16 of moisture eliminator 6 is connected with the inlet 17 of mechanico-chemical reaction device 7, and the reductive agent input aperture 19 on the outlet 18 of mechanico-chemical reaction device 7 and reduction dechlorination reactor 1 surface is connected by the sealing conveying belt 8 that the end has the airtight transport pipe 4 of spiral.
Described reduction dechlorination reactor 1 is made of the upflowing fluidized-bed reactor, also be provided with on the internal side wall of this upflowing fluidized-bed reactor and have the baffle plate 2 that becomes 30~45 ° of angles with vertical direction, the central interior of upflowing fluidized-bed reactor is provided with agitator 3, and the blade of this agitator 3 is positioned at the bottom position of this upflowing fluidized-bed reactor.
Described mechanico-chemical reaction device 7 is for having the oscillatory type ball mill or the roller milling machine of nitrogen protection equipment 9.
Reduction dechlorination reactor 1, reductive agent water extracter 5, moisture eliminator 6 and mechanico-chemical reaction device 7 by mutual conduction connection in this mechanochemistry reduction dechlorination water treatment system, the reductive agent cost that uses when the halo pollutent is handled is low, and reductive agent is by 7 preparations of mechanico-chemical reaction device, and manufacture is big and technology is simple; By the acting in conjunction of reductive agent water extracter 5, moisture eliminator 6 and mechanico-chemical reaction device 7, reductive agent can also obtain regeneration in addition, and is performance undamaged through the reductive agent of surface active, the reduction efficiency height; This system also has the processing power of high density and ultrahigh concentration chloro organic loading, and the contaminated hardly effects of load of its disposing capacity adds that whole system can not produce other secondary pollutions such as dioxin owing to adopt the system of sealing.
Description of drawings
Accompanying drawing is a mechanochemistry reduction dechlorination water treatment system internal structure connection diagram of the present invention.
Embodiment
The present invention will be described in more detail below in conjunction with accompanying drawing.
As shown in drawings, mechanochemistry reduction dechlorination water treatment system, comprise that the surface has the reduction dechlorination reactor 1 of water-in 10 and water outlet 11, the current of this reduction dechlorination reactor 1 bottom are connected with the inlet 13 of reductive agent delivery port 12 by sealing conveying belt 8 and reductive agent water extracter 5, the outlet 14 of reductive agent water extracter 5 is connected with the inlet 15 of moisture eliminator 6, the outlet 16 of moisture eliminator 6 is connected with the inlet 17 of mechanico-chemical reaction device 7, and the reductive agent input aperture 19 on the outlet 18 of mechanico-chemical reaction device 7 and reduction dechlorination reactor 1 surface is connected by the sealing conveying belt 8 that the end has the airtight transport pipe 4 of spiral.Described reduction dechlorination reactor 1 is made of the upflowing fluidized-bed reactor, also be provided with on the internal side wall of this upflowing fluidized-bed reactor and have the baffle plate 2 that becomes 30~45 ° of angles with vertical direction, the central interior of upflowing fluidized-bed reactor is provided with agitator 3, and the blade of this agitator 3 is positioned at the bottom position of this upflowing fluidized-bed reactor.Described mechanico-chemical reaction device 7 is for having the oscillatory type ball mill or the roller milling machine of nitrogen protection equipment 9.
Principle of work of the present invention is: be to put into halo pollutent to be restored and corresponding reductive agent in the upflowing fluidized-bed reactor toward reduction dechlorination reaction device 1 at first; water-in 10 from the upflowing fluidized-bed reactor pours into water for cleaning subsequently; and start agitator 3 and stir water for cleaning mixing reductive agents and carry out the dehalogenation reduction of halo pollutent and allow the water for cleaning that cleans the back and have a reductive agent rise; at this moment become with vertical direction the baffle plate 2 of 30~45 ° of angles allow after cleaning water for cleaning by and hinder reductive agent by baffle plate 2; water for cleaning after the cleaning flows out by the water outlet 11 of upflowing fluidized-bed reactor immediately; reductive agent then returns in the upflowing fluidized-bed reactor under its action of gravity; after the partial reduction agent is because of surface passivation or inactivation; stopping stirring rake 3 rotates; reductive agent is because heavier than water; so arrive reactor bottom by gravity settling; to partly with the reductive agent mixture of water be extracted by reductive agent water extracter 5 by current and reductive agent delivery port 12 this moment; and via entering moisture eliminator 6 with sealing conveying belt 8 after the preliminary hydro-extraction; remove the interference of moisture fully; the reductive agent of surface passivation subsequently or inactivation is discharged into mechanico-chemical reaction device 7; the oscillatory type ball mill or the roller milling machine that also promptly have nitrogen protection equipment 9; nitrogen protection equipment 9 inflated with nitrogen protection like this; carry out the mechanochemistry activation then; in reactivation process; the reductive agent metal produces section; make new avtive spot increase, it is in the upflowing fluidized-bed reactor that the reductive agent that activation is good enters reduction dechlorination reactor 1 by the airtight transport pipe 4 of spiral again.
Reduction dechlorination reactor 1, reductive agent water extracter 5, moisture eliminator 6 and mechanico-chemical reaction device 7 by mutual conduction connection in this mechanochemistry reduction dechlorination water treatment system, just can the low reductive agent of use cost be handled by the halo pollutent, and reductive agent is by 7 preparations of mechanico-chemical reaction device, and manufacture is big and technology is simple; By the acting in conjunction of reductive agent water extracter 5, moisture eliminator 6 and mechanico-chemical reaction device 7, reductive agent can also obtain regeneration in addition, and is performance undamaged through the reductive agent of surface active, the reduction efficiency height; This system also has the processing power of high density and ultrahigh concentration chloro organic loading, and the contaminated hardly effects of load of its disposing capacity adds that whole system can not produce other secondary pollutions such as dioxin owing to adopt the system of sealing.

Claims (3)

1. mechanochemistry reduction dechlorination water treatment system, comprise that the surface has the reduction dechlorination reactor (1) of water-in (10) and water outlet (11), it is characterized in that: the current of this reduction dechlorination reactor (1) bottom are connected with the inlet (13) of reductive agent delivery port (12) by sealing conveying belt (8) and reductive agent water extracter (5), the outlet (14) of reductive agent water extracter (5) and the inlet (15) of moisture eliminator (6) are connected, the outlet (16) of moisture eliminator (6) and the inlet (17) of mechanico-chemical reaction device (7) are connected, and the outlet (18) of mechanico-chemical reaction device (7) is connected by the sealing conveying belt (8) that the end has the airtight transport pipe of spiral (4) with the reductive agent input aperture (19) on reduction dechlorination reactor (1) surface.
2. a kind of mechanochemistry reduction dechlorination water treatment system according to claim 1, it is characterized in that: described reduction dechlorination reactor (1) is made of the upflowing fluidized-bed reactor, also be provided with on the internal side wall of this upflowing fluidized-bed reactor and have the baffle plate (2) that becomes 30~45 ° of angles with vertical direction, the central interior of upflowing fluidized-bed reactor is provided with agitator (3), and the blade of this agitator (3) is positioned at the bottom position of this upflowing fluidized-bed reactor.
3. according to claim 1 or the described a kind of mechanochemistry reduction dechlorination water treatment system of claim 2, it is characterized in that: described mechanico-chemical reaction device (7) is for having the oscillatory type ball mill or the roller milling machine of nitrogen protection equipment (9).
CN2011100216411A 2011-01-19 2011-01-19 Mechanochemical reductive dechlorination water treatment system Active CN102115252B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107649501A (en) * 2017-09-27 2018-02-02 江苏南京地质工程勘察院 A kind of method of 2,4 Dichlorophenols in directly ball-milling method degraded soil
CN110328203A (en) * 2019-07-09 2019-10-15 珠海格力智能装备有限公司 The good material-suction pot purging method of flushing effect and urea machine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080023409A1 (en) * 2004-05-05 2008-01-31 Owens Samuel R Apparatus and process for water conditioning
US20080302720A1 (en) * 2007-03-30 2008-12-11 Reid Bowman Membrane biofilm reactor for removing contaminants from ground water
CN101428888A (en) * 2008-11-27 2009-05-13 北京理工大学 Method and apparatus for treating polychloride waste
CN101531419A (en) * 2009-04-13 2009-09-16 杭州浙大易泰环境科技有限公司 Method for reinforced metal reduction dechlorination treatment of chloro-alkenes waste water
CN201351130Y (en) * 2008-12-29 2009-11-25 广州唯普电力科技有限公司 Dechlorination device for water treatment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080023409A1 (en) * 2004-05-05 2008-01-31 Owens Samuel R Apparatus and process for water conditioning
US20080302720A1 (en) * 2007-03-30 2008-12-11 Reid Bowman Membrane biofilm reactor for removing contaminants from ground water
CN101428888A (en) * 2008-11-27 2009-05-13 北京理工大学 Method and apparatus for treating polychloride waste
CN201351130Y (en) * 2008-12-29 2009-11-25 广州唯普电力科技有限公司 Dechlorination device for water treatment
CN101531419A (en) * 2009-04-13 2009-09-16 杭州浙大易泰环境科技有限公司 Method for reinforced metal reduction dechlorination treatment of chloro-alkenes waste water

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107649501A (en) * 2017-09-27 2018-02-02 江苏南京地质工程勘察院 A kind of method of 2,4 Dichlorophenols in directly ball-milling method degraded soil
CN110328203A (en) * 2019-07-09 2019-10-15 珠海格力智能装备有限公司 The good material-suction pot purging method of flushing effect and urea machine

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