CN109319990A - A kind of recycled water sterilization method based on ultraviolet technology - Google Patents
A kind of recycled water sterilization method based on ultraviolet technology Download PDFInfo
- Publication number
- CN109319990A CN109319990A CN201811313504.3A CN201811313504A CN109319990A CN 109319990 A CN109319990 A CN 109319990A CN 201811313504 A CN201811313504 A CN 201811313504A CN 109319990 A CN109319990 A CN 109319990A
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- Prior art keywords
- disinfection
- level
- ultraviolet
- recycled water
- ultraviolet lamp
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- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 68
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001954 sterilising effect Effects 0.000 title claims abstract description 27
- 238000005516 engineering process Methods 0.000 title claims abstract description 15
- 230000001376 precipitating effect Effects 0.000 claims abstract description 16
- 241000894006 Bacteria Species 0.000 claims abstract description 5
- 238000005273 aeration Methods 0.000 claims description 12
- 238000004062 sedimentation Methods 0.000 claims description 11
- 238000001556 precipitation Methods 0.000 claims description 8
- 229910000329 aluminium sulfate Inorganic materials 0.000 claims description 6
- 238000006213 oxygenation reaction Methods 0.000 claims description 6
- 238000007654 immersion Methods 0.000 claims description 5
- 159000000013 aluminium salts Chemical class 0.000 claims description 3
- 230000001112 coagulating effect Effects 0.000 claims description 3
- -1 compound poly-aluminium salt Chemical class 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 abstract description 16
- 239000004155 Chlorine dioxide Substances 0.000 abstract description 8
- 235000019398 chlorine dioxide Nutrition 0.000 abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000011109 contamination Methods 0.000 abstract description 4
- 239000003643 water by type Substances 0.000 abstract 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002574 poison Substances 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a kind of recycled water sterilization method based on ultraviolet technology, which comprises the following steps: (1) the three step recycled waters disinfection treatment of precipitating pretreatment, (2) disinfection by ultraviolet light and the processing of (3) running water reaches and kills most bacterium colony.Device structure of the invention is simple, and core original part is ultraviolet lamp, and easy to maintain, use process does not generate secondary pollution；Equipment investment expense is low, operating cost 20-30% low compared with chlorine dioxide technique；Simple and compact equipment structure, occupied area is small, and occupied area reduces 20-40% compared with ozone treatment and chlorine dioxide treatment method；Recycled water Disinfection Effect is good, and with the characteristic contaminations densimeter such as excrement colibacillus group number, after invention device disinfection treatment, excrement colibacillus group number removal rate is greater than 90%, and longtime running is stablized.
Description
Technical field
The present invention relates to wastewater treatment method, especially a kind of recycled water sterilization method based on ultraviolet technology belongs to skill
Art field.
Background technique
Recycled water reaches certain water quality indicator after referring to that waste water or rainwater are appropriately processed, meets certain use and wants
It asks, can carry out beneficial to the water used.It is compared with sea water desalination, distruting water transregionally, recycled water has apparent advantage.From economy
From the point of view of, the cost of recycled water is minimum, and from the point of view of environmental protection, reuse of wastewater helps to improve the ecological environment, and realizes
The benign cycle of Ecology.
Domestic current recycled water disinfection treatment technique is mainly ozonization and disinfection method by chlorine dioxide, and wherein ozone disappears
There are ozone to leak for poison, causes secondary pollution；Disinfection by chlorine dioxide is needed using hydrochloric acid and sodium chlorate, and there are certain chemicals to let out
The environmental risks such as leakage.
Summary of the invention
The purpose of the present invention is to solve the defects of the above-mentioned prior art, provide a kind of recycled water based on ultraviolet technology
Sterilization method.
The purpose of the present invention can be reached by adopting the following technical scheme that:
A kind of recycled water sterilization method based on ultraviolet technology, which comprises the following steps:
1) precipitating pretreatment:
Make entrance sedimentation basin to be processed, level-one precipitating, two-stage precipitation and three-level precipitating is carried out step by step, by the pre- place of sedimentation basin
After reason, achieve the purpose that oil removing desilts；
2) disinfection by ultraviolet light:
Disinfection by ultraviolet light pond will be entered by precipitating pretreated recycled water, and carry out level-one disinfection, two stage disinfection and three-level step by step
Disinfection, after ultraviolet lamp disinfection is handled, the ultraviolet lamp uses wavelength for the ultraviolet lamp of 200 ~ 280nm,；
Specifically, level-one sterilization pool will be entered by precipitating pretreated recycled water, it is 200 that wavelength is equipped in level-one sterilization pool
The ultraviolet lamp of ~ 280nm sterilizes 20min, and subsequently into two stage disinfection pond, it is 240nm- that wavelength is equipped in two stage disinfection pond
The ultraviolet lamp of 270nm sterilizes 10min, finally enters three-level sterilization pool, and it is 250nm- that wavelength is equipped in three-level sterilization pool
The ultraviolet lamp of 260nm sterilizes 5min, reaches dead most excrement colibacillus group；
3) running water is handled:
The recycled water handled through disinfection by ultraviolet light enters aeration tank and carries out oxygenation, and mechanical impellor aeration dress is equipped in the aeration tank
Set, the recycled water after the oxygenation of aeration tank through bacterium colony detect it is up to standard after discharge.
As a preferred solution of the present invention, the first stage precipitation tank is aerated grit chamber.
As a preferred solution of the present invention, the second-level settling pond is coagulative precipitation tank, and the flocculant is poly-
Aluminium salt and compound poly-aluminium salt.
As a preferred solution of the present invention, the three-level sedimentation basin is filtering settling pond.
As a preferred solution of the present invention, the ultraviolet lamp uses immersion ultraviolet lamp.
The present invention have compared with the existing technology it is following the utility model has the advantages that
1, device structure of the invention is simple, and core original part is ultraviolet lamp, and easy to maintain, use process does not generate secondary pollution；
2, equipment investment expense of the invention is low, operating cost 20-30% low compared with chlorine dioxide technique；
3, simple and compact equipment structure of the invention, occupied area is small, and occupied area is compared with ozone treatment and chlorine dioxide treatment side
Method reduces 20-40%；
4, recycled water Disinfection Effect of the present invention is good, with the characteristic contaminations densimeter such as excrement colibacillus group number, disappears through the invention device
After poison processing, excrement colibacillus group number removal rate is greater than 90%, and longtime running is stablized.
Detailed description of the invention
Fig. 1 is recycled water disinfection process figure of the invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
A kind of recycled water sterilization method based on ultraviolet technology is further elaborated.It should be appreciated that described herein specific
Embodiment is only used to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, a kind of recycled water sterilization method based on ultraviolet technology of the present embodiment, which is characterized in that including
Following steps:
1) precipitating pretreatment:
Make entrance sedimentation basin to be processed, level-one precipitating, two-stage precipitation and three-level precipitating is carried out step by step, by the pre- place of sedimentation basin
After reason, achieve the purpose that oil removing desilts；
2) disinfection by ultraviolet light:
Disinfection by ultraviolet light pond will be entered by precipitating pretreated recycled water, and carry out level-one disinfection, two stage disinfection and three-level step by step
Disinfection, after ultraviolet lamp disinfection is handled, the ultraviolet lamp uses wavelength for the ultraviolet lamp of 200 ~ 280nm,；
Specifically, level-one sterilization pool will be entered by precipitating pretreated recycled water, it is 200 that wavelength is equipped in level-one sterilization pool
The ultraviolet lamp of ~ 280nm sterilizes 2min, and subsequently into two stage disinfection pond, it is 240nm- that wavelength is equipped in two stage disinfection pond
The ultraviolet lamp of 270nm sterilizes 1min, finally enters three-level sterilization pool, and it is 250nm-260nm that wavelength is equipped in three-level sterilization pool
Ultraviolet lamp, sterilize 1min, reach dead most excrement colibacillus group；
3) running water is handled:
The recycled water handled through disinfection by ultraviolet light enters aeration tank and carries out oxygenation, and mechanical impellor aeration dress is equipped in the aeration tank
Set, the recycled water after the oxygenation of aeration tank through bacterium colony detect it is up to standard after discharge.
The first stage precipitation tank is aerated grit chamber.Aerated grit chamber is a kind of elongated channel, along the entire of the side Qu Bi
Length direction sets sand collecting hopper in its underpart away from aerator is installed at bottom of pond 60-90cm, and bottom of pond has the gradient of i=0.1-0.5,
To guarantee that sand grains slides into.
The second-level settling pond is coagulative precipitation tank, and the flocculant is poly-aluminium salt and compound poly-aluminium salt.Pass through to
Some medicaments (commonly referred to as coagulant and flocculation aid) is added in water, and the particle for being difficult to precipitate in water is enable to be aggregated with one another and be formed
Then colloid forms bigger floccule body in conjunction with the impurity in water body.Floccule body has powerful adsorption capacity, can not only adsorb outstanding
Floating object, moreover it is possible to absorbed portion bacterium and dissolved matter.Floccule body is increased and is sunk by absorption, volume.
The three-level sedimentation basin be filtering settling pond, it is therefore an objective to by water source suspended particulate matter or colloidal substance remove
Completely.
The ultraviolet lamp uses immersion ultraviolet lamp.
The ultraviolet technology disinfection principle that the present invention uses: ultraviolet light is one kind of electromagnetic wave, and the electronics in atom is from high energy
When step adjourns low energy rank, excess energy can be discharged with electromagnetic wave.The energy of electromagnetic wave is stronger, then frequency is higher, and wavelength is got over
It is short.The wavelength for the visible light that human eye can be seen is 400nm-700nm, and the electromagnetic wave of 400nm is shown as blue for naked eyes
Color, purple, the electromagnetic wave of 780nm are shown as orange, red.Ultraviolet light refers to the also short wave of wavelength ratio 400nm, because its spectrum exists
Except purple area, therefore named is ultraviolet light (Ultraviolet, abbreviation UV).Logical refer to of ultraviolet light is electricity of the wavelength in 100nm-400nm
The eyes of magnetic wave, people can't see ultraviolet light.The ultraviolet light of 100nm-400nm wavelength is divided by its influence and function to human body
UV-A, UV-B, UV-C and V-UV.UV-A refers to wavelength in the ultraviolet light of 315nm-400nm, and it is black that UV-A can be such that the skin of people generates
Pigment makes skin darkening.UV-B refers to wavelength in the ultraviolet light of 280nm-315nm, and UV-B can be carcinogenic, enables skin corrugate, always
Change.UV-C refers to wavelength in the ultraviolet light of 200nm-280nm, and wherein the ultraviolet light of 254nm wave band has sterilization, disinfection effect wave
The UV-C between 240nm-270nm is grown, the DNA and RNA of cell, virus can be directly destroyed, keep microorganism dead rapidly.Wavelength
V-UV185nm between 100nm-200nm can generate ozone, and in air or the ozone that is dissolved in water, it can be micro- life
The cell wall of object is destroyed with oxidised form, keeps microorganism dead at once.
Embodiment 1:
Ultraviolet lamp of the ultraviolet wavelength within the scope of 240 ~ 280nm is selected, sufficiently irradiates recycled water using immersion ultraviolet lamp, it will
Immersion ultraviolet lamp is totally submerged in recycled water, by detecting through excrement colibacillus group number in the recycled water of ultraviolet light irradiation front and back,
This method is calculated to the Disinfection Effect of recycled water.By simulated experiment, with the characteristic contaminations densimeter such as excrement colibacillus group number, warp
After invention device disinfection treatment, excrement colibacillus group number removal rate is greater than 90%, and specific data are as shown in the table:
Device structure of the invention is simple, and core original part is ultraviolet lamp, and easy to maintain, use process does not generate secondary pollution；This
The equipment investment expense of invention is low, operating cost 20-30% low compared with chlorine dioxide technique；Simple and compact equipment structure of the invention,
Occupied area is small, and occupied area reduces 20-40% compared with ozone treatment and chlorine dioxide treatment method；The present invention regenerates water sterilization effect
Fruit is good, with the characteristic contaminations densimeter such as excrement colibacillus group number, after invention device disinfection treatment, the removal of excrement colibacillus group number
Rate is greater than 90%, and longtime running is stablized.
The above, only the invention patent preferred embodiment, but the scope of protection of the patent of the present invention is not limited to
This, anyone skilled in the art is in the range disclosed in the invention patent, according to the present invention the skill of patent
Art scheme and its patent of invention design are subject to equivalent substitution or change, belong to the scope of protection of the patent of the present invention.
Claims (5)
1. a kind of recycled water sterilization method based on ultraviolet technology, which comprises the following steps:
1) precipitating pretreatment:
Make entrance sedimentation basin to be processed, level-one precipitating, two-stage precipitation and three-level precipitating is carried out step by step, by the pre- place of sedimentation basin
After reason, achieve the purpose that oil removing desilts；
2) disinfection by ultraviolet light:
Disinfection by ultraviolet light pond will be entered by precipitating pretreated recycled water, and carry out level-one disinfection, two stage disinfection and three-level step by step
Disinfection, after ultraviolet lamp disinfection is handled, the ultraviolet lamp uses wavelength for the ultraviolet lamp of 200 ~ 280nm,；
Specifically, level-one sterilization pool will be entered by precipitating pretreated recycled water, it is 200 that wavelength is equipped in level-one sterilization pool
The ultraviolet lamp of ~ 280nm sterilizes 20min, and subsequently into two stage disinfection pond, it is 240nm- that wavelength is equipped in two stage disinfection pond
The ultraviolet lamp of 270nm sterilizes 10min, finally enters three-level sterilization pool, and it is 250nm- that wavelength is equipped in three-level sterilization pool
The ultraviolet lamp of 260nm sterilizes 5min, reaches dead most excrement colibacillus group；
3) running water is handled:
The recycled water handled through disinfection by ultraviolet light enters aeration tank and carries out oxygenation, and mechanical impellor aeration dress is equipped in the aeration tank
Set, the recycled water after the oxygenation of aeration tank through bacterium colony detect it is up to standard after discharge.
2. a kind of recycled water sterilization method based on ultraviolet technology according to claim 1, it is characterised in that: the level-one
Sedimentation basin is aerated grit chamber.
3. a kind of recycled water sterilization method based on ultraviolet technology according to claim 1, it is characterised in that: the second level
Sedimentation basin is coagulative precipitation tank, and the flocculant is poly-aluminium salt and compound poly-aluminium salt.
4. a kind of recycled water sterilization method based on ultraviolet technology according to claim 1, it is characterised in that: the three-level
Sedimentation basin is filtering settling pond.
5. a kind of recycled water sterilization method based on ultraviolet technology according to claim 1, it is characterised in that: described ultraviolet
Lamp uses immersion ultraviolet lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313504.3A CN109319990A (en) | 2018-11-06 | 2018-11-06 | A kind of recycled water sterilization method based on ultraviolet technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811313504.3A CN109319990A (en) | 2018-11-06 | 2018-11-06 | A kind of recycled water sterilization method based on ultraviolet technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109319990A true CN109319990A (en) | 2019-02-12 |
Family
ID=65259478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811313504.3A Pending CN109319990A (en) | 2018-11-06 | 2018-11-06 | A kind of recycled water sterilization method based on ultraviolet technology |
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| Country | Link |
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| CN (1) | CN109319990A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546441Y (en) * | 2002-04-29 | 2003-04-23 | 新疆华远工程设备有限公司 | Regenerated water recovery treating apparatus |
| CN101182084A (en) * | 2007-11-15 | 2008-05-21 | 天津市市政工程设计研究院 | Reclaimed water reuse combined treatment method |
| CN201209125Y (en) * | 2008-02-20 | 2009-03-18 | 河海大学常州校区 | Ultraviolet C water treatment apparatus |
| CN106759767A (en) * | 2016-12-09 | 2017-05-31 | 江苏龙腾工程设计股份有限公司 | Rainwater-collecting reclaiming system and its collection reuse method |
-
2018
- 2018-11-06 CN CN201811313504.3A patent/CN109319990A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2546441Y (en) * | 2002-04-29 | 2003-04-23 | 新疆华远工程设备有限公司 | Regenerated water recovery treating apparatus |
| CN101182084A (en) * | 2007-11-15 | 2008-05-21 | 天津市市政工程设计研究院 | Reclaimed water reuse combined treatment method |
| CN201209125Y (en) * | 2008-02-20 | 2009-03-18 | 河海大学常州校区 | Ultraviolet C water treatment apparatus |
| CN106759767A (en) * | 2016-12-09 | 2017-05-31 | 江苏龙腾工程设计股份有限公司 | Rainwater-collecting reclaiming system and its collection reuse method |
Non-Patent Citations (3)
| Title |
|---|
| 杨波等: ""紫外线消毒技术在再生水处理中的应用"", 《中国给水排水》 * |
| 杨波等: ""紫外线消毒技术在城市污水再生利用中的试验研究"", 《水工业市场》 * |
| 段云霞等: "《城市黑臭水体治理实用技术及案例分析》", 31 March 2018, 天津大学出版社 * |
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Application publication date: 20190212 |