CN103058456B - Device and method for UV oxidation photolysis-based restoration of polychlorinated biphenyl-polluted underground water - Google Patents
Device and method for UV oxidation photolysis-based restoration of polychlorinated biphenyl-polluted underground water Download PDFInfo
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- CN103058456B CN103058456B CN201210585735.6A CN201210585735A CN103058456B CN 103058456 B CN103058456 B CN 103058456B CN 201210585735 A CN201210585735 A CN 201210585735A CN 103058456 B CN103058456 B CN 103058456B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 59
- 238000006303 photolysis reaction Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003647 oxidation Effects 0.000 title claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 11
- 230000015843 photosynthesis, light reaction Effects 0.000 title abstract 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 13
- 238000000862 absorption spectrum Methods 0.000 claims description 9
- 239000003673 groundwater Substances 0.000 claims description 7
- 230000008439 repair process Effects 0.000 claims description 6
- 238000011835 investigation Methods 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 150000003071 polychlorinated biphenyls Chemical group 0.000 abstract description 12
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 2
- 239000002351 wastewater Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 9
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- 235000010290 biphenyl Nutrition 0.000 description 4
- 238000001782 photodegradation Methods 0.000 description 4
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- 102000003939 Membrane transport proteins Human genes 0.000 description 2
- 108090000301 Membrane transport proteins Proteins 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000006298 dechlorination reaction Methods 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
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- 125000001309 chloro group Chemical group Cl* 0.000 description 1
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Abstract
The invention belongs to the technical field of the polychlorinated biphenyl-polluted environment restoration and relates to a device and a method for UV oxidation photolysis-based restoration of polychlorinated biphenyl-polluted underground water. The device is characterized in that an underground water collection device, a photolysis treatment device, a transmission pump, a biological treatment device, a detection device and a recharging device are orderly connected; the underground water collection device and the photolysis treatment device are arranged in a suction well; the transmission pump, the biological treatment device, the detection device and the recharging device are arranged on the ground; and the photolysis treatment device and the biological treatment device are connected respectively to their controllers arranged on the ground. The method utilizes photolysis restoration as a main process and other restoration means (biological means) as auxiliary processes, adopts the device having a compact structure, and has a clear technological process, simple processes and high reliability. The device and the method greatly improve a polychlorinated biphenyl pollution restoration range, and have high work efficiency and pollutant clearance. Product water obtained by the device and the method has good quality, has a polychlorinated biphenyl removal rate more than 90% and has pollution indexes reaching the national wastewater integrated discharge primary standard.
Description
Technical field
The invention belongs to pollution by polychlorinated biphenyles environment remediation technical field, be specifically related to a kind of device and method of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation.
Background technology
Polychlorobiphenyl (polychlorinated biphenyls, PCBs) is that biphenyl is in varying degrees, by the general name of the artificial organic compound generating after the replacement of chlorine atom.Because of it, there is the features such as good unreactiveness, heat impedance, insulativity, once as a kind of Industrial products, produce in a large number and be widely used in the fields such as power industry, Plastics Processing Industry, chemical industry and printing.So when stopping when studies have shown that PCBs to have the nature of dangers such as immunotoxicity, nerve and development toxicity, hepatotoxicity and teratogenesis, mutagenesis, carinogenicity producing and using, PCBs has caused its extensive distribution and accumulation in environment in industrial a large amount of uses.PCBs the most representative this persistence organic pollutant, approximately has 10 years production histories (1965-1975 years) in China, and accumulative total is produced nearly ten thousand tons.So China is faced with and administers the challenge that PCBs pollutes.
Underground water, as water body important on the earth, has close relationship with human society.Having as at huge reservoir of underground formation of underground water, with its stable water supply conditions, good water quality, and becomes the important water source of agricultural irrigation, industrial and mining enterprises and city domestic water.According to incompletely statistics, the exploitation utilization of China's underground water accounts for 10% to 15% of national total water amount, and wherein each provinces and regions, the north are because surface water resources is not enough, and mining of groundwater utilization is very large.The following complex formation in earth's surface, Groundwater Flow is extremely slow, and therefore, groundwater pollution has the advantages that process is slow, be difficult for finding and being difficult to improvement.Once underground water is polluted, even if thoroughly eliminate its source of pollution, naturally repair and also want the more than ten years even just can make decades water quality restore.The PCBs being present in environment discharges, is deposited in soil with different approaches, is dissolved in underground water.If contaminated underground water is treated, just by industrial or agricultural, do not utilized, even as drinking water source, will cause great threat to people's life security.
Since recognizing pollution situation and the harm to human and environment of polychlorobiphenyl, many scientific workers, people just put in the research that pollution by polychlorinated biphenyles administers.At present, industrial technology and test method mainly comprise the technology of thermal treatment, chemical treatment, photodegradation and biological treatment several respects.Heat treatment technics can be divided into pyroprocessing method and the large class of subzero treatment method two: pyroprocessing method is a waste treatment being widely adopted, but its treatment condition requirement is harsh, cost is higher and easily generate Dioxins; There are some researches show that subzero treatment method has good treatment effect for the PCBs of lower concentration, but the PCBs of processing high density performs poor.Method of chemical treatment is exactly under certain condition, with other reagent and PCBs, reacts, and makes it dechlorination and generates biphenol compound or other nontoxic, low toxicity materials.Method of chemical treatment operational means is varied, so be of wide application, but method of chemical treatment exists complex process, shortcoming that processing efficiency is low, and if some chemical treatment methods control the improper secondary pollution that is easy to produce.With thermal treatment and chemical treatment, compare, photodegradation and biological treatment are more green and safe processing means.The cardinal principle of photodegradation polychlorobiphenyl is dechlorination reaction, therefore need further to process through photodegradative degraded product.Biological treatment processing costs is low, can thoroughly clear the pollution off, and can not cause secondary pollution to environment, but refuse and the degradation speed of the lower concentration of can only degrading are slow.
Summary of the invention
The present invention is directed to the blank that Field of Groundwater Study pollution by polychlorinated biphenyles is repaired, in conjunction with advanced photodegradation and biologic treating technique, overcome that other restorative procedure costs are high, complex process, difficultly controlled, had the shortcomings such as secondary pollution, photodegradative transitory efficient and biodegradable low-consumption high-efficiency are combined, and providing a kind of is a kind of have environmental protection, efficient energy-saving, economic advanced reparation means.
A device of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, its underground water collection device, photodissociation treatment unit, transmission pump, biological treatment device, proofing unit are connected in turn with backflow device; Wherein underground water collection device, photodissociation treatment unit are arranged in suction well, and transmission pump, biological treatment device, proofing unit and backflow device are arranged on earth's surface; Photodissociation treatment unit is connected with the control device that it is arranged on earth's surface respectively with biological treatment device.
In described photodissociation treatment unit, light source is ultraviolet source, and the quantity of light source is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed.
The absorption spectrum of the UV-light that described ultraviolet source sends is 200 nm ~ 275 nm.
A method of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, its concrete steps are as follows:
A. by field investigation in conjunction with simulative optimization means, obtain underground water collection device, transmission pipeline, suction well, transmission pump position, underground water collection device connect transmission pipeline by Groundwater Control in several suction well aspiration ranges;
B. by the control device of earth's surface photodissociation treatment unit, control absorption spectrum and the photodissociation duration of UV-light, the underground water polluting is carried out to photodissociation processing;
C. the underground water through photodissociation is pumped in geodyte treatment unit, underground water is further processed;
D. by proofing unit, treated underground water is detected, determine that polychlorobiphenyl is effectively removed;
E. the underground water of processing is recharged underground by backflow device.
In described step a, the light source of photodissociation treatment unit is ultraviolet source, and light source number is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed.
The absorption spectrum of described step b medium ultraviolet light is 200 nm ~ 275 nm, and photodissociation duration is 40 s ~ 5 min.
Beneficial effect of the present invention is:
1. photodissociation reparation is that master, other reparation means (biological means) are auxiliary, has greatly improved range of application and working efficiency that polychlorobiphenyl is repaired.Whole repair process is smooth, compact equipment, and simple to operate, reliability is high.
2. photodissociation repair process carries out in suction well, belongs to original position reparation, little to ecotope disturbance, effectively prevents that volatile contaminant is diffused in other environment support.
3. effluent quality is good, and polychlorobiphenyl clearance is more than 90%, and each main contamination index all reaches national sewage comprehensive discharge primary standard.
4. overcome that other restorative procedure costs are high, complex process, difficultly controlled, have the shortcomings such as secondary pollution, and repairing efficiency is shorter.Compare with domestic and international similar Pollutant Treatment technology, process range expands 50%～75%; Reaching under the prerequisite of equal regulation effect, this technology reduces investment outlay approximately 25%～45%, saves maintenance and management cost 40%～50%; In identical resource input situation, screening system optimized operation scheme, reaches optimal effectiveness, and row freight charges are 60%～75% of similar technology.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is that the present invention aspirates well schematic perspective view;
Number in the figure: 1-underground water collection device; 2-photodissociation treatment unit; 3-transmission pump; 4-biological treatment device; 5-proofing unit; 6-backflow device; 7-aspirates well; 9-Polluted area
Embodiment
The invention provides a kind of device and method of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A device of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, its underground water collection device 1, photodissociation treatment unit 2, transmission pump 3, biological treatment device 4, proofing unit 5 and backflow device 6 are connected in turn; Wherein underground water collection device 1, photodissociation treatment unit 2 are arranged in suction well 7, and transmission pump 3, biological treatment device 4, proofing unit 5 and backflow device 6 are arranged on earth's surface; Photodissociation treatment unit 2 is connected with the control device that it is arranged on earth's surface respectively with biological treatment device 4.
In described photodissociation treatment unit 2, light source is ultraviolet source, and the quantity of light source is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed.
The absorption spectrum of the UV-light that described ultraviolet source sends is 200 nm ~ 275 nm.
A method of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, its concrete steps are as follows:
A. by field investigation in conjunction with simulative optimization means, obtain underground water collection device, transmission pipeline, suction well, transmission pump position, underground water collection device connect transmission pipeline by Groundwater Control in several suction well aspiration ranges;
B. by the control device of earth's surface photodissociation treatment unit, control absorption spectrum and the photodissociation duration of UV-light, the underground water polluting is carried out to photodissociation processing;
C. the underground water through photodissociation is pumped in geodyte treatment unit, underground water is further processed;
D. by proofing unit, treated underground water is detected, determine that polychlorobiphenyl is effectively removed;
E. the underground water of processing is recharged underground by backflow device.
In described step a, the light source of photodissociation treatment unit is ultraviolet source, and light source number is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed.
The absorption spectrum of described step b medium ultraviolet light is 200 nm ~ 275 nm, and photodissociation duration is 40 s ~ 5 min.
Apparatus of the present invention operational scheme as shown in Figure 1, first by underground water collection device 1 by Groundwater Control in process range, and carry out photodissociation processing by being arranged on photodissociation treatment unit 2 and the surface control device thereof of suction in well 7; Then by transmission pump 3, underground water extracting is further processed in biological treatment device 4; The finally water outlet by 5 pairs of systems of proofing unit detects, and the underground water of processing after up to standard recharges underground by backflow device 6.
The method photodissociation reparation is that master, other reparation means (biological means) they are auxiliary, prosthetic appliance compact construction, and flow process is clear, and simple to operate, reliability is high.Not only improve greatly polychlorobiphenyl repair coverage, also had higher working efficiency and pollutants removal rate.Effluent quality is good, and polychlorobiphenyl clearance is more than 90%, and each main contamination index all reaches national sewage comprehensive discharge primary standard.Repair process environmental protection, energy-saving and emission-reduction,, non-secondary pollution little to ecological disturbance.Compare with domestic and international similar Pollutant Treatment technology, process range expands 50%～75%; Reaching under the prerequisite of equal regulation effect, this technology reduces investment outlay approximately 25%～45%, saves maintenance and management cost 40%～50%; In identical resource input situation, screening system optimized operation scheme, reaches optimal effectiveness, and row freight charges are 60%～75% of similar technology.
Claims (2)
1. based on UV oxidation photodissociation, repair a device for polychlorobiphenyl in underground water, it is characterized in that: underground water collection device (1), photodissociation treatment unit (2), transmission pump (3), biological treatment device (4), proofing unit (5) and backflow device (6) are connected in turn; Wherein underground water collection device (1), photodissociation treatment unit (2) are arranged in suction well (7), and transmission pump (3), biological treatment device (4), proofing unit (5) and backflow device (6) are arranged on earth's surface; Photodissociation treatment unit (2) is connected with the control device that it is arranged on earth's surface respectively with biological treatment device (4);
In described photodissociation treatment unit (2), light source is ultraviolet source, and the quantity of light source is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed;
The absorption spectrum of the UV-light that described ultraviolet source sends is 200nm～275nm.
2. a method of repairing polychlorobiphenyl in underground water based on UV oxidation photodissociation, is characterized in that, concrete steps are as follows:
A. by field investigation in conjunction with simulative optimization means, obtain underground water collection device, transmission pipeline, suction well, transmission pump position, underground water collection device connect transmission pipeline by Groundwater Control in several suction well aspiration ranges;
B. by the control device of earth's surface photodissociation treatment unit, control absorption spectrum and the photodissociation duration of UV-light, the underground water polluting is carried out to photodissociation processing;
C. the underground water through photodissociation is pumped in geodyte treatment unit, underground water is further processed;
D. by proofing unit, treated underground water is detected, determine that polychlorobiphenyl is effectively removed;
E. the underground water of processing is recharged underground by backflow device;
In described step a, the light source of photodissociation treatment unit is ultraviolet source, and light source number is a plurality of, and arrangement mode is that multilayer ring-type is evenly distributed;
The absorption spectrum of described step b medium ultraviolet light is 200nm～275nm, and photodissociation duration is 40s～5min.
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| CN201210585735.6A CN103058456B (en) | 2012-12-28 | 2012-12-28 | Device and method for UV oxidation photolysis-based restoration of polychlorinated biphenyl-polluted underground water |
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| CN201210585735.6A CN103058456B (en) | 2012-12-28 | 2012-12-28 | Device and method for UV oxidation photolysis-based restoration of polychlorinated biphenyl-polluted underground water |
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| CN103252342B (en) * | 2013-05-10 | 2015-04-15 | 华北电力大学 | Electrodynamic force ultraviolet photolysis in-situ repair device and repair method thereof |
| CN103288168B (en) * | 2013-06-27 | 2015-06-10 | 华北电力大学 | Multiphase vacuum suction and reinforced ultraviolet catalytic photolysis repair system and repair method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241451A (en) * | 2011-04-08 | 2011-11-16 | 哈尔滨工业大学 | Degradation method for halogenated disinfection by-products |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102241451A (en) * | 2011-04-08 | 2011-11-16 | 哈尔滨工业大学 | Degradation method for halogenated disinfection by-products |
Non-Patent Citations (2)
| Title |
|---|
| 王海棠等.紫外光照射与生物降解耦合用于PCBs降解的研究.《环境污染治理技术与设备》.2003,第4卷(第05期),60-64. |
| 紫外光照射与生物降解耦合用于PCBs降解的研究;王海棠等;《环境污染治理技术与设备》;20030531;第4卷(第05期);60-64 * |
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