CN116161817A - Ozone air floatation treatment process for combined overflow sewage - Google Patents
Ozone air floatation treatment process for combined overflow sewage Download PDFInfo
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- CN116161817A CN116161817A CN202310104566.8A CN202310104566A CN116161817A CN 116161817 A CN116161817 A CN 116161817A CN 202310104566 A CN202310104566 A CN 202310104566A CN 116161817 A CN116161817 A CN 116161817A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 108
- 239000010865 sewage Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000008569 process Effects 0.000 title claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 62
- 230000003197 catalytic effect Effects 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 238000005345 coagulation Methods 0.000 claims abstract description 13
- 230000015271 coagulation Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 229910001220 stainless steel Inorganic materials 0.000 claims description 30
- 239000010935 stainless steel Substances 0.000 claims description 30
- 239000000701 coagulant Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 25
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 24
- 238000005273 aeration Methods 0.000 claims description 24
- 229910052719 titanium Inorganic materials 0.000 claims description 24
- 239000010936 titanium Substances 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 22
- 239000010802 sludge Substances 0.000 claims description 14
- 239000003814 drug Substances 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 10
- 239000002893 slag Substances 0.000 claims description 10
- 238000005188 flotation Methods 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 8
- 230000003647 oxidation Effects 0.000 claims description 7
- 238000007254 oxidation reaction Methods 0.000 claims description 7
- 238000007790 scraping Methods 0.000 claims description 5
- 230000002195 synergetic effect Effects 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000012546 transfer Methods 0.000 abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 abstract 2
- 238000013461 design Methods 0.000 description 11
- 239000013049 sediment Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229920002401 polyacrylamide Polymers 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004090 dissolution Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 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
- -1 and meanwhile Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010866 blackwater Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
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- 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
- C02F1/24—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
- C02F1/52—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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/23—O3
-
- 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
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses an ozone air floatation treatment process for combined overflow sewage, wherein sewage sequentially flows through a reaction zone, a contact zone, a separation zone and a catalytic zone of a main reaction unit, the main reaction unit carries out ozone air floatation treatment on the sewage, a reagent adding unit and an ozone generating unit are connected to the main reaction unit, the reagent adding unit carries out coagulation on the treated sewage, and the ozone generating unit adds ozone into the main reaction unit to improve ozone mass transfer efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an ozone air floatation treatment process for combined overflow sewage.
Background
In recent years, urban heavy rain pollution is frequent, so that the flow of the combined overflow sewage is large and the influence area is wide, and the combined overflow sewage is one of the main reasons for urban odor black water body, surface water pollution and water environment deterioration, so that the combined overflow pollution control is an unavoidable and urgent need to be solved.
Ozone gas floatation is a powerful technical means for degrading typical pollutants of CSO, and can adapt to the conditions of complex and changeable water quality and water quantity of combined overflow pollution. The existing ozone floatation device has the defects of low treatment efficiency, unstable treatment effect and the like. If the water body pollutants can be efficiently degraded by utilizing the synergistic effect of coagulation and ozone air flotation, the rapid, efficient and large-flux emergency treatment of sewage is realized, and the method has important significance for controlling the combined overflow sewage.
Disclosure of Invention
The invention mainly aims at providing an ozone air floatation treatment process for combined overflow sewage.
In order to achieve the above purpose, the invention provides an ozone air floatation treatment process for combined overflow sewage, which comprises the following treatment steps:
(1) Introducing sewage into a reaction zone, wherein at least one first titanium aeration disc is arranged at the bottom of the reaction zone, introducing ozone into the reaction zone through the first titanium aeration disc, adding coagulant PAC and coagulant aid PAM into the reaction zone, and carrying out coagulation and ozone synergistic treatment;
(2) Introducing the sewage treated in the step (1) into a contact area, wherein a dissolved air releaser is arranged at the bottom of the contact area, introducing ozone into the contact area through the dissolved air releaser, and floating floc particles formed after coagulation to form scum;
(3) Introducing the sewage treated in the step (2) into a separation area to remove scum and sludge in the sewage;
(4) Introducing the sewage treated in the step (3) into a catalytic zone, wherein the catalytic zone is provided with ozone catalytic filler, and carrying out catalytic oxidation treatment on the sewage.
Further, a water inlet unit is arranged and comprises a water inlet pipe communicated with the reaction zone, a lifting pump and an electromagnetic flowmeter, wherein the lifting pump and the electromagnetic flowmeter are arranged on the water inlet pipe, the water inflow of sewage is 2-15 m < 3 >/h, and the sewage is regulated by the electromagnetic flowmeter.
Further, the porosity of the ozone catalytic filler in the catalytic zone is 25% -45%.
Further, a medicament adding unit is arranged and comprises a coagulant dissolving barrel and a coagulant aid dissolving barrel, the coagulant dissolving barrel and the coagulant aid dissolving barrel are respectively communicated with the reaction area through a dosing pipe, and a diaphragm metering pump is arranged on the dosing pipe.
Further, a main reaction vessel is arranged, a first stainless steel baffle plate, a baffle plate and a second stainless steel baffle plate are sequentially fixed in the main reaction vessel from left to right, and the first stainless steel baffle plate, the baffle plate and the second stainless steel baffle plate divide the main reaction vessel into a reaction zone, a contact zone, a separation zone and a catalytic zone.
Further, an ozone generating unit is arranged and comprises an ozone generator, the concentration of ozone generated by the ozone generator is 90-135mg/L, the ozone is respectively introduced into the first titanium aeration disc and the dissolved gas releaser in two ways, and the flow ratio of the two ozone gases is 1:1 to 1:2.
Further, a residual ozone treatment unit is arranged and comprises a rotary fan and at least one second titanium aeration disc arranged at the bottom of the catalytic zone, an air inlet of the rotary fan is communicated with the separation zone, and an air outlet of the rotary fan is communicated with the second titanium aeration disc.
Further, a chain type slag scraping machine is arranged at the top of the separation area, and sludge discharging pipes with inclined plates at two sides are arranged at the bottom of the separation area. Still be equipped with the sediment board that arranges in the separation district, the sediment board is located the right side below of sediment machine is scraped to the chain, the sediment board includes L template and connects the hang plate on the vertical limit top of L template, the horizontal limit of L template is connected on the second stainless steel baffle, L template with the second stainless steel baffle encloses into the sediment groove that arranges.
Further, a gas-liquid mixing pump and a dissolved air tank are arranged, a gas inlet of the gas-liquid mixing pump is communicated with the ozone generator, a liquid inlet of the gas-liquid mixing pump is communicated with the catalytic zone, an outlet of the gas-liquid mixing pump is communicated with an inlet of the dissolved air tank, and an outlet of the dissolved air tank is communicated with the dissolved air releaser.
Further, the gas-liquid ratio in the gas-liquid mixing pump is 1:9-1:10.
Further, the catalytic zone is provided with an exhaust gas destructor which is communicated with the catalytic zone through an exhaust gas collecting pipeline.
The beneficial effects of the invention are as follows:
the invention breaks through the limitation of the traditional device on the air dissolving amount, greatly improves the ozone mass transfer efficiency, and synchronously enhances the ozone microbubble oxidation and coagulation air floatation effects; active oxygen free radicals generated by catalytic oxidation are utilized to oxidize refractory organic matters in a non-selective way, so that the organic matter removal effect is enhanced, the treatment efficiency of the device is greatly improved, and the ozone utilization rate is improved; the skid-mounted device can realize the rapid and efficient treatment of the combined overflow sewage, has the advantages of good treatment effect, impact load resistance, no permanent occupation of land, convenience in mobile scheduling, flexible operation mode, convenience in operation management, excellent applicability and the like, can realize industrialization, and has good engineering application prospect.
Drawings
FIG. 1 is a schematic view of an overall apparatus according to an embodiment of the present invention.
Reference numerals illustrate: 1. a medicine adding unit; 2. a main reaction vessel; 3. an ozone generating unit; 4. a water inlet unit; 5. a residual ozone treatment unit; 21. a reaction zone; 22. a contact region; 23. a separation zone; 24. a catalytic zone; 26. a stirrer; 27. a slag discharging plate; 234. an inclined plate; 235. an L-shaped plate; 211. a first titanium aeration disc; 221. a dissolved air releaser; 11. coagulant dissolving barrel; 12. coagulant aid medicine dissolving barrel; 13. a diaphragm gauge; 14. a dosing tube; 31. an ozone generator; 7. a first stainless steel baffle; 8. a baffle plate; 71. a second stainless steel baffle; 231. chain type slag scraping machine; 233. a slag discharge groove; 232. a mud pipe; 242. ozone catalytic filler; 16. a rotary fan; 32. a dissolved air tank; 33. a gas-liquid mixing pump; 41. a water inlet pipe; 42. a lift pump; 43. an electromagnetic flowmeter; 19. a tail gas disrupter; 18. a tail gas collection pipe; 241. a second titanium aeration disc; 15. a first stainless steel cover plate; 17. and a second stainless steel cover plate.
Detailed description of the preferred embodiments
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. Embodiments and features of embodiments in this application may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiment of the present invention, directional indications such as up, down, left, right, front, and rear … … are referred to, and the directional indication is merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture such as that shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" as it appears throughout includes three parallel schemes, for example "A and/or B", including the A scheme, or the B scheme, or the scheme where A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
See fig. 1.
The invention discloses an ozone air floatation treatment process for combined overflow sewage, which comprises the following treatment steps:
(1) Introducing sewage into a reaction zone 21, arranging at least one first titanium aeration disc 211 at the bottom of the reaction zone 21, introducing ozone into the reaction zone 21 through the first titanium aeration disc 211, adding coagulant PAC and coagulant aid PAM into the reaction zone 21, and carrying out coagulation and ozone cooperative treatment;
(2) Introducing the sewage treated in the step (1) into a contact area 22, wherein a dissolved air releaser 221 is arranged at the bottom of the contact area 22, introducing ozone into the contact area 22 through the dissolved air releaser 221, and floating floc particles formed after coagulation to form scum;
(3) Introducing the sewage treated in the step (2) into a separation zone 23 to remove scum and sludge in the sewage;
(4) And (3) introducing the sewage treated in the step (3) into a catalytic zone 24, wherein the catalytic zone 24 is provided with ozone catalytic filler 242, and carrying out catalytic oxidation treatment on the sewage.
The coagulant is polyaluminum chloride PAC, the coagulant aid is polyacrylamide PAM, sewage and the coagulant aid PAC are fully mixed in the reaction zone 21 to form floccule particles, and meanwhile, sewage reacts with ozone, and typical pollutants of combined overflow are produced by utilizing the synergistic effect of coagulation and ozone: high-efficiency removal of typical pollution indexes such as Chemical Oxygen Demand (COD), suspended Substances (SS) and Total Phosphorus (TP); sewage flows out of the bottom of the reaction zone 21 and then enters the contact zone 22, floc particles float upwards under the action of ozone microbubbles to form scum, water flow enters the separation zone 22, scum on the surface of the sewage is fished out, and sludge sinking into the bottom is extracted; the effluent after solid-liquid separation enters a catalytic zone 24, the residual organic matters are further removed by catalytic oxidation under the action of ozone catalytic filler, COD is reduced again, part of the effluent after reaction flows back to a front-end contact zone 22 for secondary pollutant removal, and the rest is directly discharged.
According to the design of the invention, the titanium aeration disc (the diameter of the titanium aeration disc is 100 mm) is additionally arranged at the front end of the traditional horizontal flow type air floatation device, so that the limitation of the traditional device on the dissolved air quantity is broken through, sewage fully reacts with ozone released by the first titanium aeration disc at the bottom of the reaction zone 21, and the efficient removal of the typical pollutants COD, SS, TP overflowed in a combined system is realized by utilizing the synergistic effect of coagulation and ozone air floatation.
In one embodiment, a water inlet unit 4 is provided, the water inlet unit 4 comprises a water inlet pipe 41 communicated with the reaction zone 21, a lift pump 42 and an electromagnetic flowmeter 43 which are arranged on the water inlet pipe 41, and the water inlet amount of the sewage is 2-15 m3/h and is regulated by the electromagnetic flowmeter 43. By the design, the water inflow of sewage entering the main reaction container is effectively controlled.
In one embodiment, the ozone catalytic filler 242 of the catalytic zone 24 has a porosity of 25% to 45%. By adopting the design, the active oxygen free radicals generated by catalytic oxidation are used for non-selective oxidative degradation of organic matters, the removal effect of the organic matters is enhanced, the treatment efficiency of the device is greatly improved, and the utilization rate of ozone is also improved. The catalytic filler is an ozone catalyst, and specific components are not limited, such as an alumina-based ozone catalyst.
In an embodiment, a medicine adding unit 1 is provided, the medicine adding unit 1 comprises a coagulant dissolution barrel 11 and a coagulant aid dissolution barrel 12, the coagulant dissolution barrel 11 and the coagulant aid dissolution barrel 12 are respectively communicated with the reaction zone 21 through a medicine adding pipe 14, and a diaphragm metering pump 13 is installed on the medicine adding pipe 14. By the design, coagulant (polyaluminum chloride PAC) and coagulant aid (polyacrylamide PAM) are put into a reaction zone to react with sewage, coagulation is realized, and the rate of the medicament entering the reaction zone is effectively controlled by the diaphragm metering pump 13.
In one embodiment, a main reaction vessel 2 is provided, a first stainless steel baffle 7, a baffle plate 8 and a second stainless steel baffle plate 71 are sequentially fixed in the main reaction vessel 2 from left to right, and the first stainless steel baffle 7, the baffle plate 8 and the second stainless steel baffle plate 71 divide the main reaction vessel 2 into a reaction zone 21, a contact zone 22, a separation zone 23 and a catalytic zone 24. The upper end of the first stainless steel baffle plate 7 is fixed at the top of the main reaction vessel 2, and the reaction zone 21 and the contact zone 22 are communicated with each other through a gap between the lower end of the first stainless steel baffle plate 7 and the bottom of the main reaction vessel 2; the lower end of the baffle plate 8 is fixed at the bottom of the main reaction vessel 2, the contact zone 22 and the separation zone 23 are communicated with each other through a gap between the upper end of the baffle plate 8 and the top of the main reaction vessel 2, and the baffle plate 8 is obliquely arranged rightward with an inclination angle of 40-55 degrees; the upper end of the second stainless steel baffle plate is fixed at the top of the main reaction vessel 2, and the separation zone 23 and the catalytic zone 24 are communicated through a gap between the lower end of the second stainless steel baffle plate 71 and the bottom of the main reaction vessel 2. By the design, the main reaction vessel 2 is divided into four areas through the antioxidant stainless steel baffle plate, the flow direction of sewage in the main reaction vessel 8 is effectively controlled, water is discharged from the bottom of the reaction zone 21 and enters the contact zone 22, floc particles float upwards to form scum under the action of ozone microbubbles released by the dissolved air releaser 221, water flow enters the separation zone 23 along the baffle plate 8, then effluent water after solid-liquid separation enters the catalytic zone 24, and the floc particles in the contact zone 22 float upwards to be guided to the separation zone 23 along the baffle plate 8 under the action of ozone microbubbles released by the dissolved air releaser 221.
In one embodiment, an ozone generating unit 3 is provided, the ozone generating unit 3 includes an ozone generator 31, the concentration of ozone generated by the ozone generator 31 is 90-135mg/L, the ozone is respectively introduced into the first titanium aeration disc 211 and the dissolved air releaser 221 in two ways, and the flow ratio of the two ozone gases is 1:1 to 1:2. The design is that ozone is respectively introduced into a first titanium aeration disc 211 and a dissolved gas releaser 221 in two ways, the flow ratio of the ozone gas in the two parts is regulated to be 1:1 to 1:2 by a gas flowmeter, and the first titanium aeration disc 211 continuously aerates sewage in a reaction zone 21 to uniform water quality; floating up the floc particles to form scum under the action of ozone microbubbles released by the dissolved gas releaser 221, enhancing ozone mass transfer efficiency and reducing energy consumption loss.
In an embodiment, a residual ozone treatment unit 5 is provided, the residual ozone treatment unit 5 includes a rotary fan 16 and at least one second titanium aeration disc 241 provided at the bottom of the catalytic zone 24, an air inlet of the rotary fan 16 is communicated with the separation zone 23, and an air outlet of the rotary fan 16 is communicated with the second titanium aeration disc 241. The top of reaction zone 21, contact zone 22 and separation zone 23 is equipped with first stainless steel apron 7, the catalysis zone top is equipped with second stainless steel apron 71, the stainless steel apron is sealed main reaction vessel 2 top and is used for forming a relatively confined interval with main reaction vessel, the second titanium aeration dish 241 of catalysis zone 24 bottom is led into after the residual ozone collection on the top cap to gyration fan 16, the wind pressure of gyration fan 16 is 0.3 ~ 0.5kfg/m3, the design like this, the ozone of loss in the main reaction vessel 2 obtains the reutilization, prevent direct destruction to lead to the wasting of resources, the utilization ratio of ozone has been improved.
In one embodiment, a chain type slag scraper 231 is disposed at the top of the separation zone 23, and a sludge discharge pipe 232 with inclined plates on both sides is disposed at the bottom of the separation zone 23. Still be equipped with in the separation zone 24 and arrange the sediment board 27, arrange sediment board 27 and be located the right side below of chain formula sediment machine 231 is scraped, arrange sediment board 27 and include L template 235 and connect the inclined plate 234 on the vertical limit top of L template 235, the horizontal limit of L template 235 is connected on the second stainless steel baffle 71, L template 235 with the second stainless steel baffle 71 encloses into and arranges sediment groove 233. In such design, when the device runs, water flow entering the separation area 23 separates and scrapes scum to the slag discharge groove 233 through the chain type slag scraper 231, the chain type slag scraper 231 runs intermittently, and when the scraping blade of the chain type slag scraper 231 moves to the upper end of the inclined plate, the bottom of the scraping blade contacts with the inclined surface, so that the scum of sewage is cleaned more completely, and SS, TP and insoluble COD in the water are effectively removed; the inclined plates on two sides of the sludge discharge pipe 232 are used for effectively collecting sludge and draining the sludge into the sludge discharge pipe 232, and the sludge discharge pipe 232 is communicated with a sludge storage tank for collecting the sludge. After reaction and separation, suspended matters in the sewage are greatly reduced, so that the influence on the activity of the filler in the rear end catalytic zone and the blocking of the catalyst pore channels are avoided.
In an embodiment, a gas-liquid mixing pump 33 and a dissolved air tank 32 are provided, wherein a gas inlet of the gas-liquid mixing pump 33 is communicated with the ozone generator 31, a liquid inlet of the gas-liquid mixing pump 33 is communicated with the catalytic zone 24, an outlet of the gas-liquid mixing pump 33 is communicated with an inlet of the dissolved air tank 32, and an outlet of the dissolved air tank 32 is communicated with the dissolved air releaser 221. By design, one part of ozone generated by the ozone generator 31 directly provides ozone for the first titanium aeration disc 211 to realize synchronous reaction of ozone coagulation, and the other part of ozone is pressurized and dissolved in backwater water under the action of a gas-liquid mixing pump; the dissolved air water is decompressed and released to the bottom of the contact area 22 by the dissolved air releaser 221 for secondary treatment, the released micro-bubbles fully contact with the coagulated raw water, the dissolved air pressure is 0.3-0.4 MPa, and the diameter of the released micro-bubbles is 20-30 mu m.
In one embodiment, the ratio of gas to liquid in the gas-liquid mixing pump 33 is 1:9 to 1:10.
In an embodiment, an exhaust gas disruptor 19 is provided, said exhaust gas disruptor 19 being in communication with said catalytic zone 24 via an exhaust gas collecting duct 18. By the design, the residual ozone after the reaction in the catalytic zone 24 is treated by the tail gas destructor 19 and then discharged into the atmosphere, so that air pollution is avoided.
In one embodiment, the intelligent control early warning assembly comprises an electric control system and an ozone sensor, wherein the ozone sensor is arranged above the stainless steel cover plate group and provided with a folding rod; when the device is stopped, the ozone sensor is flatly paved above the stainless steel cover plate, when the device works, the ozone sensor is opened and is erected at the position of the top 2m, the environmental ozone concentration is monitored, and when the environmental ozone concentration is higher than the threshold value by 0.1mg/m 3 The electric control system automatically alarms. The design is that ozone monitoring and early warning module is established at the device top like this, and applicable non-industrial assembly's emergent pollution treatment guarantees operational environment and personnel safety. When the device is stopped, the ozone sensor is tiled above the top cover, so that the movement and the dispatching of the emergency application scene of the device are facilitated.
The foregoing is a specific embodiment of the present invention and is not limited to the details of the foregoing implementation, as will be appreciated by those of ordinary skill in the art: it is possible to modify the above embodiments or to make equivalent substitutions for some of the technical features thereof, but any modification, improvement, etc. should be included in the scope of the present invention.
Claims (10)
1. An ozone air floatation treatment process for confluence overflow sewage is characterized in that: the method comprises the following processing steps:
(1) Introducing sewage into a reaction zone (21), arranging at least one first titanium aeration disc (211) at the bottom of the reaction zone (21), introducing ozone into the reaction zone (21) through the first titanium aeration disc (211), adding a coagulant PAC and a coagulant aid PAM into the reaction zone (21), and carrying out coagulation and ozone synergistic treatment;
(2) Introducing the sewage treated in the step (1) into a contact area (22), wherein a dissolved air releaser (221) is arranged at the bottom of the contact area (22), introducing ozone into the contact area (22) through the dissolved air releaser (221), and floating floc particles formed after coagulation to form scum;
(3) Introducing the sewage treated in the step (2) into a separation zone (23) to remove scum and sludge in the sewage;
(4) Introducing the sewage treated in the step (3) into a catalytic zone (24), wherein the catalytic zone (24) is provided with ozone catalytic filler (242), and carrying out catalytic oxidation treatment on the sewage.
2. An ozone air floatation process of confluent overflow sewage as recited in claim 1, wherein: the sewage treatment device is characterized by comprising a water inlet unit (4), wherein the water inlet unit (4) comprises a water inlet pipe (41) communicated with the reaction zone (21), a lifting pump (42) and an electromagnetic flowmeter (43), the lifting pump (42) is arranged on the water inlet pipe (41), the water inlet amount of sewage is 2-15 m < 3 >/h, and the sewage is regulated by the electromagnetic flowmeter (43).
3. The ozone air flotation treatment process of the combined overflow sewage as claimed in claim 1, wherein the process is characterized in that: the porosity of the ozone catalytic filler (242) of the catalytic zone (24) is 25-45%.
4. An ozone air floatation process of confluent overflow sewage as recited in claim 1, wherein: the device is characterized by comprising a medicament adding unit (1), wherein the medicament adding unit (1) comprises a coagulant dissolving barrel (11) and a coagulant aid dissolving barrel (12), the coagulant dissolving barrel (11) and the coagulant aid dissolving barrel (12) are respectively communicated with the reaction zone (21) through a medicament adding pipe (14), and a diaphragm metering pump (13) is arranged on the medicament adding pipe (14).
5. An ozone air floatation process of confluent overflow sewage as recited in claim 1, wherein: the method comprises the steps of setting a main reaction container (2), sequentially fixing a first stainless steel baffle plate (7), a baffle plate (8) and a second stainless steel baffle plate (71) in the main reaction container (2) from left to right, and separating the main reaction container (2) into a reaction zone (21), a contact zone (22), a separation zone (23) and a catalytic zone (24) by the first stainless steel baffle plate (7), the baffle plate (8) and the second stainless steel baffle plate (71).
6. The ozone air flotation treatment process of the combined overflow sewage as claimed in claim 1, wherein the process is characterized in that: the method comprises the steps of arranging an ozone generating unit (3), wherein the ozone generating unit (3) comprises an ozone generator (31), the concentration of ozone generated by the ozone generator (31) is 90-135mg/L, the ozone is respectively introduced into a first titanium aeration disc (211) and a dissolved gas releaser (221) in two ways, and the flow ratio of the two ozone gases is 1:1 to 1:2.
7. The ozone air flotation treatment process of the combined overflow sewage as claimed in claim 1, wherein the process is characterized in that: the method comprises the steps of setting a residual ozone treatment unit (5), wherein the residual ozone treatment unit (5) comprises a rotary fan (16) and at least one second titanium aeration disc (241) arranged at the bottom of a catalytic zone (24), an air inlet of the rotary fan (16) is communicated with a separation zone (23), and an air outlet of the rotary fan (16) is communicated with the second titanium aeration disc (241).
8. The ozone air flotation treatment process of the combined overflow sewage as claimed in claim 1, wherein the process is characterized in that: the top of the separation area (23) is provided with a chain type slag scraping machine (231), and the bottom of the separation area (23) is provided with a sludge discharge pipe (232) with inclined plates at two sides.
9. The ozone air flotation treatment process for the combined overflow sewage as claimed in claim 6, wherein the ozone air flotation treatment process is characterized in that: the device comprises a gas-liquid mixing pump (33) and a dissolved air tank (32), wherein a gas inlet of the gas-liquid mixing pump (33) is communicated with the ozone generator (31), a liquid inlet of the gas-liquid mixing pump (33) is communicated with the catalytic zone (24), an outlet of the gas-liquid mixing pump (33) is communicated with an inlet of the dissolved air tank (32), and an outlet of the dissolved air tank (32) is communicated with the dissolved air releaser (221).
10. The ozone air flotation treatment process for the combined overflow sewage as claimed in claim 9, wherein: the gas-liquid ratio in the gas-liquid mixing pump (33) is 1:9-1:10.
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| CN202310104566.8A CN116161817A (en) | 2023-02-07 | 2023-02-07 | Ozone air floatation treatment process for combined overflow sewage |
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| CN202310104566.8A CN116161817A (en) | 2023-02-07 | 2023-02-07 | Ozone air floatation treatment process for combined overflow sewage |
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| CN202310104566.8A Pending CN116161817A (en) | 2023-02-07 | 2023-02-07 | Ozone air floatation treatment process for combined overflow sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813155A (en) * | 2023-08-31 | 2023-09-29 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU59047U1 (en) * | 2006-06-19 | 2006-12-10 | Петр Николаевич Рубежанский | WATER AND INDUSTRIAL WASTE WATER TREATMENT PLANT |
| CN101503263A (en) * | 2009-03-02 | 2009-08-12 | 山东省高密蓝天节能环保科技有限公司 | Wastewater treatment recycling technique and equipment thereof |
| CN205953744U (en) * | 2016-08-29 | 2017-02-15 | 青岛金万通环保科技有限公司 | Air floatation device for sewage treatment |
| CN107364991A (en) * | 2017-08-22 | 2017-11-21 | 西安建筑科技大学 | A kind of catalytic ozonation ozone air-float integrated apparatus |
| CN209567917U (en) * | 2019-03-06 | 2019-11-01 | 哈尔滨工业大学环境股份有限公司 | Ozone catalytic air-floating apparatus for sewage treatment |
| CN217051875U (en) * | 2022-03-28 | 2022-07-26 | 江苏博科华环保科技有限公司 | Coagulation and ozone air flotation water treatment integrated device |
-
2023
- 2023-02-07 CN CN202310104566.8A patent/CN116161817A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU59047U1 (en) * | 2006-06-19 | 2006-12-10 | Петр Николаевич Рубежанский | WATER AND INDUSTRIAL WASTE WATER TREATMENT PLANT |
| CN101503263A (en) * | 2009-03-02 | 2009-08-12 | 山东省高密蓝天节能环保科技有限公司 | Wastewater treatment recycling technique and equipment thereof |
| CN205953744U (en) * | 2016-08-29 | 2017-02-15 | 青岛金万通环保科技有限公司 | Air floatation device for sewage treatment |
| CN107364991A (en) * | 2017-08-22 | 2017-11-21 | 西安建筑科技大学 | A kind of catalytic ozonation ozone air-float integrated apparatus |
| CN209567917U (en) * | 2019-03-06 | 2019-11-01 | 哈尔滨工业大学环境股份有限公司 | Ozone catalytic air-floating apparatus for sewage treatment |
| CN217051875U (en) * | 2022-03-28 | 2022-07-26 | 江苏博科华环保科技有限公司 | Coagulation and ozone air flotation water treatment integrated device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116813155A (en) * | 2023-08-31 | 2023-09-29 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
| CN116813155B (en) * | 2023-08-31 | 2023-12-22 | 金科环境股份有限公司 | System and method for treating silicon wafer cutting fluid wastewater and application |
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