CN110980867A - Sewage (rainwater) disinfection and purification treatment method by using solar energy - Google Patents
Sewage (rainwater) disinfection and purification treatment method by using solar energy Download PDFInfo
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- CN110980867A CN110980867A CN201911246387.8A CN201911246387A CN110980867A CN 110980867 A CN110980867 A CN 110980867A CN 201911246387 A CN201911246387 A CN 201911246387A CN 110980867 A CN110980867 A CN 110980867A
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- 239000010865 sewage Substances 0.000 title claims abstract description 39
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000000746 purification Methods 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000011941 photocatalyst Substances 0.000 claims abstract description 20
- 238000005273 aeration Methods 0.000 claims abstract description 14
- 239000001301 oxygen Substances 0.000 claims abstract description 9
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 9
- 238000011068 loading method Methods 0.000 claims abstract description 8
- 150000002148 esters Chemical class 0.000 claims abstract description 6
- 229920000098 polyolefin Polymers 0.000 claims abstract description 6
- 230000001699 photocatalysis Effects 0.000 claims description 18
- 239000002131 composite material Substances 0.000 claims description 12
- 230000000249 desinfective effect Effects 0.000 claims description 10
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 238000005286 illumination Methods 0.000 claims description 5
- 206010021143 Hypoxia Diseases 0.000 claims description 4
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- 239000012876 carrier material Substances 0.000 claims description 4
- 230000007954 hypoxia Effects 0.000 claims description 4
- 238000013032 photocatalytic reaction Methods 0.000 claims description 4
- 238000005276 aerator Methods 0.000 claims description 3
- -1 carbon nitrides Chemical class 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 238000003618 dip coating Methods 0.000 claims description 2
- 238000006213 oxygenation reaction Methods 0.000 claims description 2
- 239000013543 active substance Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 230000000593 degrading effect Effects 0.000 claims 1
- 244000005700 microbiome Species 0.000 abstract description 16
- 230000002045 lasting effect Effects 0.000 abstract description 5
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 4
- 239000006004 Quartz sand Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 230000003385 bacteriostatic effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 230000000813 microbial effect Effects 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 230000000968 intestinal effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical class ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 210000004666 bacterial spore Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 208000031513 cyst Diseases 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 210000001035 gastrointestinal tract Anatomy 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 244000045947 parasite Species 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- PYWVYCXTNDRMGF-UHFFFAOYSA-N rhodamine B Chemical compound [Cl-].C=12C=CC(=[N+](CC)CC)C=C2OC2=CC(N(CC)CC)=CC=C2C=1C1=CC=CC=C1C(O)=O PYWVYCXTNDRMGF-UHFFFAOYSA-N 0.000 description 1
- 229940043267 rhodamine b Drugs 0.000 description 1
- 229910021649 silver-doped titanium dioxide Inorganic materials 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- 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)
- Catalysts (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage (rainwater) disinfection and purification treatment method by utilizing solar energy. The invention uses a powdered photocatalyst g-C3N4Or g-C3N4And BiOXaYbSupported on a polyolefin ester material; the material for loading the photocatalyst is suspended in water, so that sunlight is fully utilized, and the photocatalyst is easy to recover and reuse; in the disinfection process, the sewage (rain) is subjected to low-oxygen aeration, the electric energy of the aeration is provided by a solar cell panel, and the solar cell panel is oxygenated by adopting nano micro bubbles. The method has a lasting antibacterial effect, and the inactivated microorganisms cannot be reactivated again in the dark; in the disinfection process, the novel organic micropollutants in the sewage (rain) can be efficiently catalyzed and degraded. The invention has safe operation, low energy consumption and no secondary pollution to the environment. Can be applied to disinfection treatment of filtered rainwater, secondary treatment sewage, advanced treatment sewage and the like.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage (rainwater) disinfection and purification treatment method by using solar energy.
Background
Microbial contamination in sewage (rain) water is of high worldwide interest because of its high risk of causing disease to humans. Although 99.9% of the intestinal microorganisms are removed during the primary and secondary treatment in a sewage treatment plant, the bacteria in the intestinal tract can be further removed by the tertiary treatment (such as filtration), but the purified sewage still contains a large amount of bacteria [ Koivunen et al, 2005 ]. Therefore, it is necessary to sterilize the polluted (rain) water to control the microbial contamination more effectively.
In recent years, the use of traditional disinfection methods (chlorine, chlorine dioxide, chloramines and ozone) has been decreasing, mainly because of the toxicity and carcinogenicity of the disinfection by-products generated during disinfection [ Veschetti et al, 2003], and the safety of operation of these disinfectants during production, transportation and storage [ Li et al, 2008 ].
Ultraviolet disinfection methods have found a number of applications because they effectively inactivate intestinal bacteria, viruses, bacterial spores and parasite cysts without producing disinfection by-products or other chemical residues [ Rajala et al, 2003 ]. But the ultraviolet disinfection lacks a lasting bacteriostatic effect, and the microorganisms inactivated by the UV can be reactivated again in the dark; moreover, the efficiency and reliability of uv disinfection depends to a large extent on the sewage treatment process used [ Salgo et al, 2002 ].
Semiconductor photocatalysts are a promising disinfection and microbial contamination control technology, however, under visible light conditions, TiO2[Li et al., 2014]The reaction activity of the isophotocatalyst is low; and after doping with noble metals, Ag/TiO2[Liga et al, 2011]、Ag-AgI/Al2O3[Hu et al., 2010]、Pt-WO3[Takehara et al.,2010]The reaction activity is improved, but the manufacturing cost of the photocatalyst is correspondingly improved, and the accidental leaching of toxic metals in the disinfection process is easy to cause the secondary pollution of water.
High molecular nano graphite carbon nitride (g-C)3N4) As a stable, heavy metal-free photocatalyst, it inactivates bacteria and viruses in water under visible light conditions [ Li et al, 2015; Li et al, 2016)]And received wide attention. But powder g-C3N4Is put into flowThe pollution (rain) water is disinfected, and the problems of non-recoverability, easy loss, easy secondary pollution to the water body and the like exist, so the pollution is greatly limited in practical application.
Therefore, there is a need to develop a new technology for disinfecting and purifying polluted (rain) water, which has high sunlight utilization rate, good disinfection effect, lasting antibacterial effect, safe operation, no secondary pollution and strong practical applicability.
Disclosure of Invention
Aiming at the problems of low visible light utilization rate, non-recoverability, easy secondary pollution and the like existing in the practical sewage (rainwater) disinfection process of the existing semiconductor photocatalyst, the invention aims to provide a sewage (rainwater) disinfection treatment method which has high sunlight utilization rate, lasting bacteriostatic effect, recoverability, safe operation and no secondary pollution.
The invention provides a method for disinfecting sewage (rain) by utilizing solar energy, which is to mix powdered carbon nitride (g-C)3N4) Photocatalysts, or powdered carbon nitride and bismuth oxyhalide (BiOX)aYb) Loading the composite photocatalyst on a carrier to obtain a material loaded with the photocatalyst; the material is placed in sewage (rain), floats on the water surface, and carries out photocatalytic reaction under the action of sunlight to realize disinfection and purification treatment on the sewage (rain); in the disinfection process, simultaneously, the sewage (rain) is subjected to hypoxia aeration;
a tubular aerator is arranged in sewage (rain) below the material and is used for low-oxygen aeration.
The invention has safe operation and lasting bacteriostatic effect, the inactivated microorganism can not be reactivated again in the dark, and the invention has no secondary pollution to the environment.
In the present invention, the g-C3N4-BiOClxIy composite photocatalyst, X, Y = Cl, Br or I, and X ≠ Y, a + b = 1. See patent application No.: 201811163903.6.
in the invention, the carrier material is polyolefin ester material, and the composite photocatalyst material can suspend in water, fully utilize sunlight and is easy to recycle.
In the present invention, the method of loading the powdered photocatalyst on the carrier material may be one of a dip-coating method, and a low-temperature hydrothermal method.
In the invention, the low-oxygen aeration is realized by arranging a tubular aerator in sewage (rain water); the concentration of dissolved oxygen is controlled to be 0.3-0.8 mg/L in the aeration process. The electric energy of the hypoxia aeration is provided by a solar cell panel, and the oxygenation is carried out by adopting nanometer microbubbles.
In the invention, the dosage of the composite photocatalytic material can be adjusted according to the water quality of the sewage (rain) subjected to actual disinfection treatment.
In the invention, under the outdoor sun illumination condition, the disinfection cycle time of the composite photocatalyst material is about 30 days (generally 25-35 days).
In the present invention, during the sterilization process, O is generated2 •-The active species can also efficiently catalyze and degrade emerging organic micro-pollutants in sewage (rain).
The invention has the beneficial effects that:
the invention provides a new method for disinfecting sewage (rain) by utilizing solar energy, the area of a composite photocatalyst material is 2m2Floating 5 cm below water surface, and removing at least 1 m after 1 sun illumination when dissolved oxygen concentration is 0.5 mg/L in aeration process3The water quality of all microorganisms in the sewage (rain) after disinfection treatment reaches the bacterial standard of drinking water in the Water quality Standard for Drinking Water (GB 5749-85) in China.
The invention has safe operation, good disinfection effect, low energy consumption and no secondary pollution, can be applied to disinfection treatment of filtered rainwater, secondary treated sewage, advanced treated sewage and the like, and has wide application prospect.
Drawings
FIG. 1 is a flow chart of a new method for disinfecting sewage (rain) by using solar energy.
Detailed Description
The present invention will be further described with reference to specific examples, but the present invention is not limited to the following examples.
Example 1
The preparation of hybrid silicone binders, see patent application No.: 201910020857.2.
about 0.3 g of powder g-C was impregnated by dip-bonding3N4Catalyst, and preparing the impregnation liquid by hybridizing siloxane binder. And (3) putting the polyolefin ester carrier into the impregnation liquid, impregnating for 1 h (turning the carrier at 30 min), taking out, drying, washing for many times to remove the part easy to fall off, and drying again to obtain the composite photocatalytic material.
Loading powder g-C with size of 5 cm × 1 cm3N4The photocatalytic material is put into a quartz tube containing 50mL of actual rainwater, and after dark reaction for 30min, the photocatalytic reaction is carried out for 30min under the condition of simulated sunlight (a 500W xenon lamp, lambda is more than or equal to 290 nm). Experimental results show that the rainwater sample before reaction contains a large amount of microorganisms, and the rainwater sample after photocatalytic disinfection does not contain microorganisms. After the rainwater water sample after photocatalytic disinfection is placed for 1 day under the dark condition, microorganisms in the water sample are not revived. The treated water is further filtered by quartz sand and the like, and then can be used for life.
Example 2
About 0.3 g of powder g-C was added by a low temperature hydrothermal method3N4-BiOCl0.75I0.25The catalyst is loaded on a polyolefin ester carrier. BiOCl0.75I0.25During the synthesis process of (1), the polyolefin ester carrier is put into the bismuth alkoxide synthesis reaction, so that the bismuth alkoxide is directly generated on the carrier. To form g-C3N4-BiOCl0.75I0.25And then taking out and drying, washing for many times to remove the part which is easy to fall off, and drying again to obtain the composite photocatalytic material.
Loading powder g-C with size of 5 cm × 1 cm3N4-BiOCl0.75I0.25The photocatalytic material is put into a quartz tube containing 50mL of actual rainwater, and after dark reaction for 30min, the photocatalytic reaction is carried out for 30min under the condition of simulated sunlight (a 500W xenon lamp, lambda is more than or equal to 290 nm). The experimental result shows that the rainwater sample before reactionThe rainwater sample after photocatalytic disinfection does not contain microorganisms. After the rainwater water sample after photocatalytic disinfection is placed for 1 day under the dark condition, microorganisms in the water sample are not revived. The treated water is further filtered by quartz sand and the like, and then can be used for life.
Example 3
In this example, the supporting material and the supporting method were the same as in example 1.
Loading powder g-C with area of 10 cm × 10 cm3N4The photocatalytic material is put into a quartz water tank (the effective water depth is 10 cm) for containing 1L of actual rainwater, the composite photocatalytic material floats 2 cm below the water surface, and the concentration of dissolved oxygen in the aeration process is 0.5 mg/L. The reaction is carried out for 1 h under the real solar illumination condition of 10:00 to 11:00 in the morning. Experimental results show that the rainwater sample before reaction contains a large amount of microorganisms, and the rainwater sample after photocatalytic disinfection does not contain microorganisms. After the rainwater water sample after photocatalytic disinfection is placed for 1 day under the dark condition, microorganisms in the water sample are not revived. The treated water is further filtered by quartz sand and the like, and then can be used for life.
Example 4
In this example, the supporting material and the supporting method were the same as in example 2.
Loading powder g-C with area of 10 cm × 10 cm3N4-BiOCl0.75I0.25The photocatalytic material is put into a quartz water tank (the effective water depth is 10 cm) for containing 1L of advanced treatment sewage, the composite photocatalytic material floats 2 cm below the water surface, and the concentration of dissolved oxygen in the aeration process is 0.5 mg/L. The reaction is carried out for 1 h under the real solar illumination condition of 13:00 to 14:00 in the afternoon. Experimental results show that the rainwater sample before reaction contains a large amount of microorganisms, and the rainwater sample after photocatalytic disinfection does not contain microorganisms. After the rainwater water sample after photocatalytic disinfection is placed for 1 day under the dark condition, microorganisms in the water sample are not revived. Meanwhile, rhodamine B (the initial concentration is 1 mg/L) added at the beginning of the reaction is also completely removed. The water after the above treatment is further filtered by quartz sand and the like, and the product is obtainedThe utility model is used for life.
Claims (7)
1. A method for disinfecting and purifying the sewage (rain) by solar energy features that the powdered carbon nitride g-C is used3N4Photocatalysts, or powdered carbon nitrides g-C3N4With bismuth oxyhalide BiOXaYbThe composite photocatalyst is loaded on a carrier to obtain a material loaded with the photocatalyst; the material is placed in sewage (rain), floats on the water surface, and carries out photocatalytic reaction under the action of sunlight to realize disinfection and purification treatment on the sewage (rain); in the disinfection process, simultaneously, the sewage (rain) is subjected to hypoxia aeration; wherein X, Y = Cl, Br or I, and X ≠ Y, a + b = 1.
2. The method as claimed in claim 1, wherein the carrier material is polyolefin ester material and can be suspended in water.
3. The method for disinfecting and purifying contaminated (rain) water by using solar energy as claimed in claim 1, wherein the method of loading the powdered photocatalyst on the carrier material is one of a dip-coating method, and a low-temperature hydrothermal method.
4. The method for disinfecting and purifying sewage (rain) water using solar energy as claimed in claim 1, wherein the low-oxygen aeration is performed by providing a pipe-type aerator in the sewage (rain) water; the concentration of dissolved oxygen is controlled to be 0.3-0.8 mg/L in the aeration process; the electric energy of the hypoxia aeration is provided by a solar cell panel, and the oxygenation is carried out by adopting nanometer microbubbles.
5. The method for disinfecting and purifying sewage (rainwater) by using solar energy as claimed in claim 1, wherein the amount of the photocatalytic material added is adjusted according to the quality of the sewage (rainwater) to be disinfected.
6. The method for disinfecting, treating and purifying polluted (rain) water by utilizing solar energy according to any one of claims 1 to 5, wherein the disinfection cycle time of the composite photocatalyst material is 25 to 35 days under outdoor sun illumination.
7. The method for disinfecting, treating and purifying contaminated (rain) water using solar energy as claimed in any one of claims 1 to 5, wherein O is generated during the disinfection process2 •-The active substances are used for catalyzing and degrading emerging organic micropollutants in sewage (rainwater).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732735A (en) * | 2017-01-18 | 2017-05-31 | 常州大学 | A kind of composite of photocatalytic degradation Microcystin and preparation method and application |
| CN109158124A (en) * | 2018-10-03 | 2019-01-08 | 复旦大学 | A kind of carbonitride and BiOX composite photocatalyst material and preparation method thereof |
| CN109553199A (en) * | 2019-01-09 | 2019-04-02 | 复旦大学 | A kind of depth water purification system using solar energy |
| US20190126257A1 (en) * | 2017-10-26 | 2019-05-02 | Soochow University | Hollow porous carbon nitride nanospheres composite loaded with agbr nanoparticles, preparation method thereof, and its application in dye degradation |
-
2019
- 2019-12-09 CN CN201911246387.8A patent/CN110980867A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106732735A (en) * | 2017-01-18 | 2017-05-31 | 常州大学 | A kind of composite of photocatalytic degradation Microcystin and preparation method and application |
| US20190126257A1 (en) * | 2017-10-26 | 2019-05-02 | Soochow University | Hollow porous carbon nitride nanospheres composite loaded with agbr nanoparticles, preparation method thereof, and its application in dye degradation |
| CN109158124A (en) * | 2018-10-03 | 2019-01-08 | 复旦大学 | A kind of carbonitride and BiOX composite photocatalyst material and preparation method thereof |
| CN109553199A (en) * | 2019-01-09 | 2019-04-02 | 复旦大学 | A kind of depth water purification system using solar energy |
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Application publication date: 20200410 |