CN102491570B - Method of treating municipal sewage by using high energy electron beams - Google Patents
Method of treating municipal sewage by using high energy electron beams Download PDFInfo
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- CN102491570B CN102491570B CN201110391412.9A CN201110391412A CN102491570B CN 102491570 B CN102491570 B CN 102491570B CN 201110391412 A CN201110391412 A CN 201110391412A CN 102491570 B CN102491570 B CN 102491570B
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Abstract
The invention relates to a method of treating municipal sewage by using high energy electron beams and aims to overcome the problems that conventional method for treating sewage by using high energy electron beams is not suitable for treating municipal sewage. The method comprises the following steps: 1, irradiating municipal sewage by using high energy electron beams; 2, carrying out adsorption treatment; 3, carrying out ash-water separation, that is, completing sewage treatment by using high energy electron beams. According to the invention, the method has the advantages of no need for chemical reagents, no secondary pollution, safety, reliability, a wide adaption scope, high degradation efficiency, a fast reaction speed, thorough degradation of pollutants, etc.; irradiation can effectively degrade organic matters, ammonia nitrogen and harmful virus and microorganisms in waste water and has effects of decoloration and deodorization in treatment of waste water. The method is used for treating municipal sewage.
Description
Technical field
The present invention relates to a kind of method of utilizing high-power electron beam Treating Municipal Sewage.
Background technology
Development and the people's living standard of along with modern industry, producing must improve, and the discharge capacity of industrial sewage and city domestic sewage improves rapidly, and serious threat, to the mankind's living environment, has brought huge pressure to municipal sewage treatment.In sewage, contain a large amount of organism, ammonia nitrogen, phosphorus and various virus, bacterium etc., if do not processed, can cause serious harm to environment.Although have various sewage treating materials and treatment technology constantly to release, all have certain defect.Existing method for the treatment of city waste water: as large in biochemical process floor space, cost of investment is high and have the secondary pollution problem of mud, therefore seeks a kind of cost low, non-secondary pollution, the Novel sewage treatment process of obvious processing effect is very necessary.
Patent document < < utilizes electron beam irradiation to process and in the method > > (CN101050035A) of oily(waste)water, discloses a kind of method of utilizing electron beam irradiation to process oily(waste)water, but the method exists the problem that is not suitable for Treating Municipal Sewage.
Summary of the invention
The present invention will solve existingly to utilize the method that electron beam irradiation disposes of sewage to have the problem that is not suitable for Treating Municipal Sewage, and a kind of method of utilizing high-power electron beam Treating Municipal Sewage is provided.
The present invention utilizes the method for high-power electron beam Treating Municipal Sewage, carries out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1～1.5MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 10～20kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:20～40, and whip attachment 2～3 hours, obtains the water after purification;
Three, Ash Water Separator: flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
The principle of high-power electron beam radiotreatment sewage: on the one hand, high-power electron beam can with pollutent direct effect, cause that their decompose and modification; On the other hand, high-power electron beam can be had an effect and produce a series of free radical, ion, hydrated electron and radical ion etc. with water, and these particles are mainly hydrated electron eaq
-, hydroperoxyl radical H, hydroxyl radical free radical OH and H
2o
2deng thering is quite high activity, can cause organic degraded, the reactions such as the reduction of inorganics with pollutent generation oxidation or reductive action.
During electron beam irradiation Treating Municipal Sewage, electron beam does not remove or mineralising organic substance and toxic substance in sewage by direct or indirect Degradation completely, making its permineralization or removing needs very high irradiation dose, this can increase processing cost greatly loses more than gain, use after common dosage irradiation, wherein a part of organism and toxic substance are degraded to carbonic acid gas and water, but some material is just changed into small-molecule substance from macromolecular complex, not with removing.Now use flyash to carry out adsorption treatment, more contribute to the removal of small-molecule substance, electron beam irradiation and Powder ash adsorption associated treatment, reach better treatment effect.Use the municipal effluent CODcr after the inventive method is processed to reach 55.3～72mg/L, BOD
5reach 12.1～24.9mg/L, NH3-N reaches 12.3～18.5mg/L.
The municipal effluent that is 830mg/L for COD concentration is after method of the present invention is processed, COD concentration reaches 133mg/L, and first with flyash, process and then with electron beam irradiation, its COD concentration is 273mg/L, the visible absorption that first more contributes to flyash by electron beam radiation treatment, better processing effect.This is that flyash is first by small-molecule substance absorption because use electron beam radiation treatment municipal effluent after first processing with flyash again, and remaining macromolecular substance is processed and become small-molecule substance through electron beam irradiation, and does not remove, and treatment effect is reduced.
The present invention adopts the method for electron beam irradiation to dispose of sewage, do not need to add chemical reagent, can not produce secondary pollution, safe and reliable, have and adapt to the advantages such as wide, degradation efficiency is high, speed of response is fast, contaminant degradation is thorough, organism, ammonia nitrogen in radiating capacity degrading waste water effectively; Kill the harmful virus in waste water, harmful microorganism; In addition, radiotreatment waste water also has the effect of decolouring, deodorizing.
Flyash is one of industrial residue that the current discharge capacity of China is larger, and a large amount of flyash does not add processing, will produce airborne dust, atmosphere pollution; If enter water system, can cause river to silt up, and toxic chemical substance wherein also can work the mischief to human body and biology.The present invention utilizes flyash to contain porous vitreum, porous carbon granules, be porous honeycomb tissue, specific surface area is larger, the feature with certain adsorptive power, by it for municipal sewage treatment, Powder ash adsorption can be removed COD, BOD, ammonia nitrogen, phosphorus etc. effectively, and the phosphorus effect of particularly removing in sewage is remarkable.Flyash after disposing of sewage can be used for producing coal ash sintering brick, produces the steam-cured brick of flyash, produces gas concrete, replaces clay to do the raw material of producing cement, and flyash is done the mixing material of production cement etc.
The present invention adopts the method for electron beam advanced oxidation to process waste water, and floor space is little, and cost is low; The sorbing material of disposing of sewage adopts the coal-fired solid emission flyash producing of thermal power plant's generating cheap and easy to get, belongs to the treatment of wastes with processes of wastes against one another, and the flyash after processing separately has its use, and non-secondary pollution economizes on resources; Water after processing meets national urban sewage discharge standard.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: present embodiment is utilized the method for high-power electron beam Treating Municipal Sewage, carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1～1.5MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 10～20kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:20～40, and whip attachment 2～3 hours, obtains the water after purification;
Three, Ash Water Separator: flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
During electron beam irradiation Treating Municipal Sewage, electron beam does not remove or mineralising organic substance and toxic substance in sewage by direct or indirect Degradation completely, making its permineralization or removing needs very high irradiation dose, this can increase processing cost greatly loses more than gain, use after common dosage irradiation, wherein a part of organism and toxic substance are degraded to carbonic acid gas and water, but some material is just changed into small-molecule substance from macromolecular complex, not with removing.Now use flyash to carry out adsorption treatment, more contribute to the removal of small-molecule substance, electron beam irradiation and Powder ash adsorption associated treatment, reach better treatment effect.Use the municipal effluent CODcr after present embodiment method is processed to reach 55.3～72mg/L, BOD
5reach 12.1～24.9mg/L, NH3-N reaches 12.3～18.5mg/L.
Present embodiment adopts the method for electron beam irradiation to dispose of sewage, do not need to add chemical reagent, can not produce secondary pollution, safe and reliable, have and adapt to the advantages such as wide, degradation efficiency is high, speed of response is fast, contaminant degradation is thorough, organism, ammonia nitrogen in radiating capacity degrading waste water effectively; Kill the harmful virus in waste water, harmful microorganism; In addition, radiotreatment waste water also has the effect of decolouring, deodorizing.
Embodiment two: present embodiment is different from embodiment one: adopting energy in step 1 is 1MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent.Other is identical with embodiment one.
Embodiment three: present embodiment is different from embodiment one: adopting energy in step 1 is 1.5MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent.Other is identical with embodiment one.
Embodiment four: present embodiment is different from embodiment one: adopting energy in step 1 is 1.2～1.3MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent.Other is identical with embodiment one.
Embodiment five: present embodiment is different from one of embodiment one to four: make irradiation dose be controlled at 10kGy in step 1.Other is identical with one of embodiment one to four.
Embodiment six: present embodiment is different from one of embodiment one to four: make irradiation dose be controlled at 20kGy in step 1.Other is identical with one of embodiment one to four.
Embodiment seven: present embodiment is different from one of embodiment one to four: make irradiation dose be controlled at 15kGy in step 1.Other is identical with one of embodiment one to four.
Embodiment eight: present embodiment is different from one of embodiment one to seven: in step 2, the weight ratio of flyash and sewage is 1:20.Other is identical with one of embodiment one to seven.
Embodiment nine: present embodiment is different from one of embodiment one to seven: in step 2, the weight ratio of flyash and sewage is 1:40.Other is identical with one of embodiment one to seven.
Embodiment ten: present embodiment is different from one of embodiment one to seven: in step 2, the weight ratio of flyash and sewage is 1:30.Other is identical with one of embodiment one to seven.
Embodiment 11: present embodiment is utilized the method for high-power electron beam Treating Municipal Sewage, carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 20kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:20, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
Municipal effluent described in present embodiment is the import water of municipal wastewater treatment plant.
The detected result of the municipal effluent indices before and after after present embodiment processing is as shown in table 1.
Table 1
| Test item | Raw waste water | Sewage after processing |
| CODcr(mg/L) | 226.42 | 56.60 |
| BOD 5(mg/L) | 192.90 | 12.67 |
| NH3-N(mg/L) | 37.03 | 12.79 |
| TP(mg/L) | 3.66 | 1.43 |
| pH(mg/L) | 7.65 | 8.67 |
| Coliform (individual/L) | ＞1.6×10 7 | 0 |
Embodiment 12: present embodiment is utilized the method for high-power electron beam Treating Municipal Sewage, carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 10kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:40, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
Municipal effluent described in present embodiment is the import water of municipal wastewater treatment plant.
The detected result of the municipal effluent indices before and after after present embodiment processing is as shown in table 2.
Table 2
| Test item | Raw waste water | Sewage after processing |
| CODcr(mg/L) | 226.42 | 71.70 |
| BOD 5(mg/L) | 192.90 | 24.47 |
| NH3-N(mg/L) | 37.03 | 18.07 |
| TP(mg/L) | 3.66 | 1.43 |
| pH(mg/L) | 7.65 | 8.08 |
| Coliform (individual/L) | ＞1.6×10 7 | 170 |
Embodiment 13: present embodiment is utilized the method for high-power electron beam Treating Municipal Sewage, carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 15kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:30, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
Municipal effluent described in present embodiment is the import water of municipal wastewater treatment plant.
The detected result of the municipal effluent indices before and after after present embodiment processing is as shown in table 3.
Table 3
| Test item | Raw waste water | Sewage after processing |
| CODcr(mg/L) | 226.42 | 67.93 |
| BOD 5(mg/L) | 192.90 | 20.50 |
| NH3-N(mg/L) | 37.03 | 15.41 |
| TP(mg/L) | 3.66 | 1.47 |
| pH(mg/L) | 7.65 | 8.07 |
| Coliform (individual/L) | ＞1.6×10 7 | 90 |
Claims (3)
1. utilize a method for high-power electron beam Treating Municipal Sewage, it is characterized in that utilizing the method for high-power electron beam Treating Municipal Sewage to carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 20kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:20, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
2. utilize a method for high-power electron beam Treating Municipal Sewage, it is characterized in that utilizing the method for high-power electron beam Treating Municipal Sewage to carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 10kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:40, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
3. utilize a method for high-power electron beam Treating Municipal Sewage, it is characterized in that utilizing the method for high-power electron beam Treating Municipal Sewage to carry out according to the following steps:
One, adopt high-power electron beam to carry out radiation treatment to municipal effluent: employing energy is 1.2MeV, and the rumbatron that electronic beam current is 1mA carries out radiation treatment to municipal effluent, during irradiation, sewage flows through from rumbatron extraction window by a tank, tank width is identical with electron beam window width, control the discharge of sewage simultaneously, make irradiation dose be controlled at 15kGy, obtain the sewage after radiotreatment;
Two, adsorption treatment: flyash is directly thrown in the sewage after radiotreatment, and the weight ratio of flyash and sewage is 1:30, and whip attachment 2 hours, obtains the water after purification;
Three, Ash Water Separator: use ash-water separation apparatus that flyash is separated with the water after purification, then, by the water discharge after purifying, complete and utilize high-power electron beam to dispose of sewage.
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| CN102727924B (en) * | 2012-07-16 | 2014-08-27 | 中国科学院高能物理研究所 | Technology for processing medical waste by utilizing irradiation technology |
| CN109399753A (en) * | 2018-12-21 | 2019-03-01 | 中广核达胜加速器技术有限公司 | A kind of control method and Related product for electron beam sewage disposal device cluster |
| CN110372064B (en) * | 2019-07-19 | 2022-01-28 | 常熟理工学院 | Method for treating medical waste liquid by using electron beam irradiation technology |
| CN116914171B (en) * | 2023-09-05 | 2024-03-12 | 南阳汉鼎高新材料有限公司 | Recycling method of failure vanadium battery electrolyte |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101050035A (en) * | 2007-03-29 | 2007-10-10 | 上海大学 | Method for treating wastewater of containing oil by using electron beam irradiation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101050035A (en) * | 2007-03-29 | 2007-10-10 | 上海大学 | Method for treating wastewater of containing oil by using electron beam irradiation |
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