CN112125452A - System and method for removing medicine difficult to remove in water plant process - Google Patents
System and method for removing medicine difficult to remove in water plant process Download PDFInfo
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- CN112125452A CN112125452A CN202011014033.3A CN202011014033A CN112125452A CN 112125452 A CN112125452 A CN 112125452A CN 202011014033 A CN202011014033 A CN 202011014033A CN 112125452 A CN112125452 A CN 112125452A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000000034 method Methods 0.000 title claims abstract description 91
- 239000003814 drug Substances 0.000 title claims abstract description 78
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 86
- 229940079593 drug Drugs 0.000 claims abstract description 57
- 239000004576 sand Substances 0.000 claims abstract description 42
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- 231100000719 pollutant Toxicity 0.000 claims abstract description 30
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 230000003068 static effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 claims description 10
- 230000014759 maintenance of location Effects 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000000825 pharmaceutical preparation Substances 0.000 claims description 10
- 229940127557 pharmaceutical product Drugs 0.000 claims description 10
- 239000008394 flocculating agent Substances 0.000 claims description 8
- 230000002572 peristaltic effect Effects 0.000 claims description 7
- -1 hydroxyl free radical Chemical class 0.000 claims description 6
- 238000011109 contamination Methods 0.000 claims description 4
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 claims description 3
- 238000009300 dissolved air flotation Methods 0.000 description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- METKIMKYRPQLGS-GFCCVEGCSA-N (R)-atenolol Chemical compound CC(C)NC[C@@H](O)COC1=CC=C(CC(N)=O)C=C1 METKIMKYRPQLGS-GFCCVEGCSA-N 0.000 description 6
- HEMJJKBWTPKOJG-UHFFFAOYSA-N Gemfibrozil Chemical compound CC1=CC=C(C)C(OCCCC(C)(C)C(O)=O)=C1 HEMJJKBWTPKOJG-UHFFFAOYSA-N 0.000 description 6
- HEFNNWSXXWATRW-UHFFFAOYSA-N Ibuprofen Chemical compound CC(C)CC1=CC=C(C(C)C(O)=O)C=C1 HEFNNWSXXWATRW-UHFFFAOYSA-N 0.000 description 6
- 229960002274 atenolol Drugs 0.000 description 6
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- 229960000623 carbamazepine Drugs 0.000 description 6
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- 229960001680 ibuprofen Drugs 0.000 description 6
- 229960005404 sulfamethoxazole Drugs 0.000 description 6
- JLKIGFTWXXRPMT-UHFFFAOYSA-N sulphamethoxazole Chemical compound O1C(C)=CC(NS(=O)(=O)C=2C=CC(N)=CC=2)=N1 JLKIGFTWXXRPMT-UHFFFAOYSA-N 0.000 description 6
- IEDVJHCEMCRBQM-UHFFFAOYSA-N trimethoprim Chemical compound COC1=C(OC)C(OC)=CC(CC=2C(=NC(N)=NC=2)N)=C1 IEDVJHCEMCRBQM-UHFFFAOYSA-N 0.000 description 6
- 229960001082 trimethoprim Drugs 0.000 description 6
- VOXZDWNPVJITMN-ZBRFXRBCSA-N 17β-estradiol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 VOXZDWNPVJITMN-ZBRFXRBCSA-N 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229960005309 estradiol Drugs 0.000 description 5
- 229930182833 estradiol Natural products 0.000 description 5
- 229940088597 hormone Drugs 0.000 description 5
- 239000005556 hormone Substances 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000003242 anti bacterial agent Substances 0.000 description 4
- 229940088710 antibiotic agent Drugs 0.000 description 4
- 239000003524 antilipemic agent Substances 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 4
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 3
- 239000003416 antiarrhythmic agent Substances 0.000 description 3
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- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
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- 238000009287 sand filtration Methods 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 231100000331 toxic Toxicity 0.000 description 3
- 230000002588 toxic effect Effects 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 230000000202 analgesic effect Effects 0.000 description 2
- 230000001754 anti-pyretic effect Effects 0.000 description 2
- 239000002221 antipyretic Substances 0.000 description 2
- 229940125716 antipyretic agent Drugs 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 230000000593 degrading effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000009931 harmful effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010067484 Adverse reaction Diseases 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
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- 210000000750 endocrine system Anatomy 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000007281 self degradation Effects 0.000 description 1
- 239000010865 sewage Substances 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
- 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
- C02F1/001—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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
-
- 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
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/34—Organic compounds containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/40—Organic compounds containing sulfur
Abstract
The invention discloses a system and a method for removing medicines which are difficult to remove in a water plant process, wherein the system comprises a DAF unit, a sand filter and ultraviolet hydrogen peroxide equipment, the DAF unit and the sand filter are conventional treatment processes for removing common pollutants in inlet water, and the ultraviolet hydrogen peroxide equipment is connected with the sand filter and then used for removing the medicines in the inlet water treated by the DAF unit and the sand filter through an advanced oxidation advanced treatment process to obtain final treated outlet water.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a system and a method for removing medicines which are difficult to remove in a water plant process by combining a conventional process with an advanced treatment process.
Background
Drugs, as a new type of pollutant, are frequently detected and found in water environments, such as effluent from sewage treatment plants, rivers, and even in drinking water, there are many types of drugs found at present, such as antibiotics, hormones, hypolipidemic agents, neurological drugs, and the like. Although the detected concentration of these drugs in water is in the order of trace (ng/L or μ g/L) compared to other conventional contaminants, the harmful effects of these drugs upon prolonged contact remain largely unappreciated, particularly for children and the elderly. Possible adverse reactions include: antibiotic drugs may cause drug resistance in human bodies, and hormone drugs may cause interference of endocrine systems in human bodies. Thus, the detection of drugs in aqueous environments is gaining more and more attention.
The existing water treatment process is mainly designed aiming at conventional or seriously harmful pollutants, the novel pollutants such as medicines are lack of consideration, particularly, the medicines have poor self-degradation capability in the environment due to complex chemical structures, and meanwhile, the removal effect is not obvious by using the common conventional water treatment process, and the detection and discovery can still be carried out on the treated effluent of a water plant.
Therefore, it is necessary to provide a technical solution to solve the above problems.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a system and a method for removing a medicine which is difficult to remove in a water plant process, so that the medicine can be rapidly degraded, and the degradation and removal efficiency is high. The conventional process is combined with a deep treatment process to remove the medicines which are difficult to remove in the water plant process.
In order to achieve the purpose, the invention provides a system for removing medicines which are difficult to remove in a water plant process, which comprises a DAF unit, a sand filter and ultraviolet hydrogen peroxide equipment, wherein the DAF unit is connected with the sand filter and used for removing general pollutants in inlet water by adopting a conventional treatment process, and the ultraviolet hydrogen peroxide equipment is connected with the back of the sand filter and used for removing the medicines in the inlet water treated by the DAF unit and the sand filter by an advanced oxidation advanced treatment process to obtain final treated outlet water.
Preferably, ultraviolet hydrogen peroxide solution equipment includes that hydrogen peroxide solution adds feeder apparatus and UV reactor, hydrogen peroxide solution is added the feeder apparatus and is used for adding hydrogen peroxide solution from adding the medicine bucket pump income the sand filter enters into the influent of UV reactor, UV reactor is through adding UV, utilizes the ultraviolet irradiation hydrogen peroxide solution to produce the big hydroxyl radical of activity to get rid of the medicine pollutant of aquatic trace.
Preferably, the hydrogen peroxide adding device adds hydrogen peroxide to ensure that the concentration of the hydrogen peroxide in the water reaches 15-20 mg/L.
Preferably, the flow rate of the water entering the UV reactor is adjusted to be 0.5-1.2m3H to ensure trace drug contamination and UV/H in water2O2Fully contacting to achieve better removal effect.
Preferably, the UV irradiation intensity of the UV process added in the UV reactor is 500-700mJ/cm2。
Preferably, the system further comprises a flocculant adding device, the flocculant adding device is arranged in front of the DAF unit, and a peristaltic pump is used for adding a flocculant into the inlet water of the DAF unit so as to flocculate particles in the inlet water by using the flocculant.
Preferably, a static mixer is arranged in front of the DAF unit, so that the flocculant and the inlet water are fully mixed by the static mixer and the concentration is kept to be 30-40 mg/L.
Preferably, the hydraulic retention time of the DAF unit is 28-36 min.
Preferably, the hydraulic retention time of the sand filter is 4-8 min.
In order to achieve the above object, the present invention provides a method for removing a drug which is difficult to remove in a water plant process, comprising the steps of:
step S1, using the DAF unit and a sand filter connected with the DAF unit as a conventional treatment process to remove general pollutants in the inlet water;
and step S2, arranging ultraviolet hydrogen peroxide equipment connected to the sand filter, and removing the medicines in the inlet water treated by the DAF unit and the sand filter through an advanced oxidation advanced treatment process to obtain final treated outlet water after the medicines are removed.
Compared with the prior art, the invention discloses a system and a method for removing medicines which are difficult to remove in a water plant process, which aims at removing part of common pollutants in water by utilizing conventional treatment processes of DAF and sand filtration to perform flocculation filtration and combining with advanced treatment and utilizing ultraviolet irradiation H2O2The method has the advantages of producing hydroxyl free radicals with high activity, fully playing the advantages of the conventional process and the advanced treatment process particularly aiming at removing trace drug pollutants in water, degrading the trace drugs in the water, along with high degradation speed, high removal rate, no toxic disinfection by-products and no color or odor of the effluent.
Drawings
FIG. 1 is a system architecture diagram of a system for removing difficult-to-remove drugs from a water plant process according to the present disclosure;
FIG. 2 is a flow chart illustrating the steps of a method for removing a hard-to-remove pharmaceutical product in a water plant process according to the present invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
The experiment proves that the ultraviolet hydrogen peroxide (UV/H)2O2) The advanced oxidation advanced treatment process can be carried out by hydrogen peroxide (H)2O2) The hydroxyl radical with large activity is generated under the irradiation of ultraviolet ray, and the oxidizing property is not selective, so that pollutant molecules with various chemical structures can be removed by nondifferential oxidation, therefore, the UV/H2O2Can be used as a treatment means for removing trace drug pollutants. Simultaneous UV/H2O2The process has the advantages of no toxic disinfection by-products, and no color or odor of effluent. However, the water body also containsThere are many other common contaminants such as solid particulates, organic carbon, inorganic matter, nitrogen and phosphorus, which occupy the UV/H2O2The processing capacity of the device causes interference to the removal of trace drugs. Therefore, the invention adopts the combination of the conventional process and the advanced treatment process in UV/H2O2The Dissolved Air Flotation (DAF) and sand filtration are added before the advanced treatment process to remove common pollutants in a part of water and reduce UV/H2O2The treatment burden of the advanced treatment process makes the advanced treatment process better aimed at removing the novel trace pollutants of the medicines.
Fig. 1 is a system architecture diagram of a system for removing difficult-to-remove drugs in a water plant process according to the present disclosure. As shown in fig. 1, the present invention discloses a system for removing a hard-to-remove drug in a water plant process, comprising: DAF Unit (Dissolved Air Flotation Unit) 10, sand filter 11, and ultraviolet hydrogen peroxide (UV/H)2O2) An apparatus.
Wherein, the DAF Unit (Dissolved Air Flotation Unit) 10 and the sand filter 11 are conventional treatment processes for removing part of common pollutants (such as solid particles, organic carbon, inorganic matters, nitrogen and phosphorus, and the like) in water, so that the pollutants do not interfere with subsequent medicines in ultraviolet hydrogen peroxide (UV/H)2O2) The effective removal in the equipment is that the inlet water enters the DAF unit 10 through the inlet Pump (Influent Pump)14, the hydraulic retention time of the DAF unit 10 is 28-36min (preferably 32min), the sand Filter 11 is connected to the DAF unit 10, the water treated by the DAF unit 10 enters the sand Filter 11, in the embodiment of the invention, the sand Filter 11 is a double-layer Filter (Dual Media Filter), the hydraulic retention time is 4-8min (preferably 6min), and after the treatment of the DAF unit 10 and the sand Filter 11, the common pollutants (such as solid particles, organic carbon, inorganic matters, nitrogen and phosphorus) in the water are removed, so that the pollutants do not interfere with the subsequent medicines in ultraviolet hydrogen peroxide (UV/H)2O2) Efficient removal in the equipment; ultraviolet hydrogen peroxide (UV/H)2O2) The equipment is connected with a sand filter 11 to carry out advanced treatment by advanced oxidationThe process removes the chemicals in the inlet water treated by the DAF unit 10 and the sand filter 11 to obtain the final treated outlet water, in the invention, ultraviolet hydrogen peroxide (UV/H)2O2) The equipment is a deep treatment process for passing hydrogen peroxide (H)2O2) Generating active hydroxyl radical under the irradiation of ultraviolet ray to oxidize and remove the medicine in water, in the present invention, ultraviolet hydrogen peroxide (UV/H)2O2) The equipment comprises hydrogen peroxide (H)2O2) A feeding device 15 and an Ultraviolet (UV) reactor 16, wherein, hydrogen peroxide (H)2O2) The adding device 15 uses a peristaltic pump to add hydrogen peroxide (H)2O2) Pumped from a dosing tank into the influent entering an Ultraviolet (UV) reactor 16 through a sand filter 11, preferably hydrogen peroxide (H)2O2) Is added in such an amount that H in the water2O2The concentration of the active ingredients reaches 15-20mg/L preferably so as to achieve the aim of better combining with a UV unit to remove the medicine, and hydrogen peroxide (H) is added2O2) The inlet water enters an Ultraviolet (UV) reactor 16, and the inlet water flow entering the UV reactor 16 is adjusted to be 0.5-1.2m3H to ensure trace drug contamination and UV/H in water2O2Fully contacted to achieve better removal effect, and the adding irradiation intensity of the UV process of the Ultraviolet (UV) reactor 16 is 500-700mJ/cm2To promote the addition of H2O2Decomposing to generate hydroxyl free radicals to improve the removal rate of the medicines in water, combining the conventional treatment process of a DAF unit and a sand filter and H2O2The combined effect of the two, the effluent from the Ultraviolet (UV) reactor 16 is the final treated effluent after removal of the various chemicals from the process.
Preferably, the invention discloses a system for removing a medicine which is difficult to remove in a water plant process, and further comprises a flocculant adding device 12, wherein the flocculant adding device 12 is arranged in front of the DAF unit 10, a flocculant PACL (polyaluminium chloride) is added into inlet water of the DAF unit 10 by using a peristaltic pump so as to flocculate particles in the water by using the flocculant PACL, preferably, a Static Mixer (Static Mixer)17 is also arranged in front of the DAF unit 10 so as to fully mix the flocculant PACL with the inlet water and achieve the optimal flocculant mixing efficiency, and preferably, the adding amount of the flocculant PACL is suitable for keeping the concentration to reach 30-40mg/L so as to flocculate the particles in the water by using the flocculant PACL at the adding concentration of 30-40 mg/L.
In the present invention, the classes of drugs removed may include analgesic antipyretics: paracetamol (Acetaminophen) and Ibuprofen (Ibuprofen); antibiotics: sulfamethoxazole (Sulfamethoxazole) and Trimethoprim (Trimethoprim); antiepileptic drugs: carbamazepine (Carbamazepine); antiarrhythmic drugs: atenolol (Atenolol); antilipemic agents: gemfibrozil (Gemfibrozil); and the hormones: estradiol (Estradiol); a total of six classes of drugs include eight drugs, each at trace level concentrations ranging from 250ng to 2800 ng/L.
FIG. 2 is a flow chart illustrating the steps of a method for removing a hard-to-remove pharmaceutical product in a water plant process according to the present invention. As shown in fig. 2, the method for removing a hard-to-remove drug in a water plant process disclosed by the invention comprises the following steps:
step S1, using the DAF unit and the sand filter connected to the DAF unit as a conventional treatment process to remove common pollutants (such as solid particles, organic carbon, inorganic matters, nitrogen and phosphorus) in the inlet water, so that the pollutants do not interfere with the ultraviolet hydrogen peroxide (UV/H) of the subsequent medicines2O2) Efficient removal in the apparatus.
Specifically, inlet water enters a DAF unit through an inlet Pump (inflow Pump), the hydraulic retention time of the DAF unit is 28-36min, water treated by the DAF unit enters a sand Filter, in the specific embodiment of the invention, the sand Filter is a double-layer Filter material Filter (Dual Media Filter), the hydraulic retention time is 4-8min, and after treatment of the DAF unit and the sand Filter, common pollutants (such as solid particles, organic carbon, inorganic matters, nitrogen and phosphorus and the like) in the water are removed, so that the pollutants can not interfere with subsequent medicines in ultraviolet hydrogen peroxide (UV/H) water2O2) Efficient removal in the apparatus.
Step S2, making ultraviolet hydrogen peroxide (UV/H)2O2) After the equipment is connected to the sand filter, the medicine in the inlet water treated by the DAF unit and the sand filter is removed by an advanced oxidation advanced treatment process to obtain the productFinally treating the effluent after removing the medicine.
In the present invention, ultraviolet hydrogen peroxide (UV/H)2O2) The equipment adopts advanced treatment process to pass through hydrogen peroxide (H)2O2) Generating active hydroxyl radical under the irradiation of ultraviolet ray to oxidize and remove the medicine in water, in the present invention, ultraviolet hydrogen peroxide (UV/H)2O2) The equipment comprises hydrogen peroxide (H)2O2) A feeding device and an Ultraviolet (UV) reactor, wherein, hydrogen peroxide (H)2O2) The adding device uses a peristaltic pump to add hydrogen peroxide (H)2O2) Pumping into water from a chemical adding barrel, passing through a sand filter, and entering into an Ultraviolet (UV) reactor, preferably hydrogen peroxide (H)2O2) Is added in such an amount that H in the water2O2The concentration of the active ingredients reaches 15-20mg/L preferably so as to achieve the aim of better combining with a UV unit to remove the medicine, and hydrogen peroxide (H) is added2O2) The inlet water enters an Ultraviolet (UV) reactor, and the inlet water flow entering the UV reactor is adjusted to be 0.5-1.2m3H to ensure trace drug contamination and UV/H in water2O2Fully contact to achieve better removal effect, and the UV irradiation intensity of the UV process in the Ultraviolet (UV) reactor is 500-700mJ/cm2To promote the addition of H2O2Decomposing to generate hydroxyl free radicals to improve the removal rate of the medicines in water, combining the conventional treatment process of a DAF unit and a sand filter and H2O2The effluent of the Ultraviolet (UV) reactor is the final treated effluent after the whole process removes various medicines.
Preferably, in step S1, a flocculant adding device is disposed in front of the DAF unit to add a flocculant PACL (polyaluminium chloride) into the inlet water of the DAF unit by using a peristaltic pump to flocculate the particles in the inlet water by using the flocculant PACL, and a Static Mixer (Static Mixer) is also disposed in front of the DAF unit to sufficiently mix the flocculant PACL with the inlet water by the Static Mixer, so as to achieve an optimal flocculant mixing efficiency. Preferably, the dosage of the flocculating agent PACL is suitable for keeping the concentration to reach 30-40mg/L, so that the flocculating agent PACL is utilized to flocculate particles in water at the dosage concentration of 30-40 mg/L.
In the present invention, the classes of drugs removed may include analgesic antipyretics: paracetamol (Acetaminophen) and Ibuprofen (Ibuprofen); antibiotics: sulfamethoxazole (Sulfamethoxazole) and Trimethoprim (Trimethoprim); antiepileptic drugs: carbamazepine (Carbamazepine); antiarrhythmic drugs: atenolol (Atenolol); antilipemic agents: gemfibrozil (Gemfibrozil); and the hormones: estradiol (Estradiol); a total of six classes of drugs include eight drugs, each at trace level concentrations ranging from 250ng to 2800 ng/L.
Example 1
In this embodiment, there is provided a method for removing a hard-to-remove drug in a water plant process by using a conventional process combined with a deep treatment process, comprising the steps of:
step 1, adding eight medicines into the water inlet of the whole process by using a medicine adding pump, so that the medicine concentrations in the water are respectively pain-relieving and fever-reducing medicines: paracetamol (Acetaminophen)1500ng/L and Ibuprofen (Ibuprofen)620 ng/L; antibiotics: sulfamethoxazole (Sulfamethoxazole)2800ng/L and Trimethoprim (Trimethoprim)1450 ng/L; antiepileptic drugs: carbamazepine (Carbamazepine)1800 ng/L; antiarrhythmic drugs: atenolol (Atenolol)580 ng/L; antilipemic agents: gemfibrozil (Gemfibrozil)625 ng/L; and the hormones: estradiol 250ng/L
And 2, arranging a dosing pump in front of the DAF unit to dose a flocculating agent PACL, keeping the concentration of the flocculating agent in water at 30-40mg/L, and arranging a static mixer behind the dosing pump to fully mix the flocculating agent with the water.
Step 3, connecting DAF with hydraulic retention time of 28-36min after the static mixer, and then sand filtering with retention time of 4-8min, flocculating and filtering general pollutants in water, so that the pollutants do not interfere with the effective removal of subsequent medicines in the UV reactor.
Step 4, after the UV reactor is connected with the sand filter, adding H into the water in the water inlet of the UV reactor by using a peristaltic pump2O2H in the added water2O2The concentration of (A) is 15-20 mg/L.
Step 5, the UV illumination intensity added in the UV reactor is 500-2。
After the whole process is operated for 2 hours, the concentration of trace drug pollutants in the effluent water sample of the collection system is monitored, and the result of the invention shows that: the removal rate of the whole process for eight medicines ranges from 84% to 98%, which shows that the conventional process combined advanced treatment process of a water plant can effectively remove trace medicine pollutants in water.
In summary, the present invention discloses a system and a method for removing the hard-to-remove drugs in the water plant process, which utilizes the conventional treatment process DAF and sand filtration to perform flocculation filtration, aims at removing part of the common pollutants in the water, and combines with the advanced treatment to utilize the ultraviolet irradiation H2O2The method has the advantages of producing hydroxyl free radicals with high activity, fully playing the advantages of the conventional process and the advanced treatment process particularly aiming at removing trace drug pollutants in water, degrading the trace drugs in the water, along with high degradation speed, high removal rate, no toxic disinfection by-products and no color or odor of the effluent.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the invention should be determined from the following claims.
Claims (10)
1. The utility model provides a get rid of system of medicine that is difficult to get rid of in water factory technology, its characterized in that, the system includes DAF unit, sand filter and ultraviolet hydrogen peroxide solution equipment, the DAF unit connection sand filter adopts conventional processing technology to get rid of the general pollutant in the influent water, ultraviolet hydrogen peroxide solution equipment connect in behind the sand filter to get rid of the process through the advanced oxidation advanced treatment technology the medicine in the influent water after DAF unit and the sand filter are handled, obtain final treatment effluent.
2. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 1, wherein: ultraviolet hydrogen peroxide solution equipment includes that hydrogen peroxide solution adds feeder apparatus and UV reactor, hydrogen peroxide solution is added the feeder apparatus and is used for adding hydrogen peroxide solution from adding the medicine bucket pump income warp the sand filter enters into the influent of UV reactor, the UV reactor is through adding UV, utilizes ultraviolet irradiation hydrogen peroxide solution to produce the big hydroxyl free radical of activity to get rid of the medicine pollutant of aquatic trace.
3. A system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 2, wherein: the hydrogen peroxide adding device adds hydrogen peroxide to ensure that the concentration of the hydrogen peroxide in the water reaches 15-20 mg/L.
4. A system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 3, wherein: adjusting the water inlet flow into the UV reactor to 0.5-1.2m3H to ensure trace drug contamination and UV/H in water2O2Fully contacting to achieve better removal effect.
5. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 4, wherein: the UV irradiation intensity of the UV process in the UV reactor is 500-700mJ/cm2。
6. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 5, wherein: the system also comprises a flocculating agent adding device which is arranged in front of the DAF unit and adds a flocculating agent into the inlet water of the DAF unit by using a peristaltic pump so as to flocculate particles in the inlet water by using the flocculating agent.
7. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 6, wherein: and a static mixer is arranged in front of the DAF unit, so that the flocculant and inlet water are fully mixed by the static mixer, and the concentration is kept to be 30-40 mg/L.
8. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 7, wherein: the hydraulic retention time of the DAF unit is 28-36 min.
9. The system for removing a hard-to-remove pharmaceutical product in a water plant process according to claim 8, wherein: the hydraulic retention time of the sand filter is 4-8 min.
10. A method for removing a drug which is difficult to remove in a water plant process, comprising the steps of:
step S1, using the DAF unit and a sand filter connected with the DAF unit as a conventional treatment process to remove general pollutants in the inlet water;
and step S2, arranging ultraviolet hydrogen peroxide equipment connected to the sand filter, and removing the medicines in the inlet water treated by the DAF unit and the sand filter through an advanced oxidation advanced treatment process to obtain final treated outlet water after the medicines are removed.
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| WO2015078241A1 (en) * | 2013-11-29 | 2015-06-04 | 中国科学院过程工程研究所 | Method for removing trace amount of toxic pollutants in water by enhanced flocculation of enzyme-loading magnetic particles |
| US20180273413A1 (en) * | 2017-03-22 | 2018-09-27 | John H. Reid | Wastewater detoxification method and system |
| CN110642440A (en) * | 2019-10-12 | 2020-01-03 | 上海城市水资源开发利用国家工程中心有限公司 | System and method for removing antibiotics difficult to remove in water plant process flow |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1994935A (en) * | 2006-12-05 | 2007-07-11 | 南开大学 | Odor-free energy-saving micro aerobiont combined processing system for cabaret sewage processing and reusing |
| WO2015078241A1 (en) * | 2013-11-29 | 2015-06-04 | 中国科学院过程工程研究所 | Method for removing trace amount of toxic pollutants in water by enhanced flocculation of enzyme-loading magnetic particles |
| CN103641273A (en) * | 2013-12-05 | 2014-03-19 | 哈尔滨工业大学 | Deep treatment system of feed water treatment plant and water treatment method employing deep treatment system |
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Application publication date: 20201225 |