CN111606468A - Multi-stage processing system for preventing and controlling river channel discharge port viruses and operation method - Google Patents
Multi-stage processing system for preventing and controlling river channel discharge port viruses and operation method Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
- C02F1/766—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens by means of halogens other than chlorine or of halogenated compounds containing halogen other than chlorine
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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- 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
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/23—O3
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2303/00—Specific treatment goals
- C02F2303/02—Odour removal or prevention of malodour
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- C02F2303/04—Disinfection
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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Abstract
The invention discloses a multistage processing system for preventing and controlling river discharge port viruses and an operation method, and is characterized in that the multistage processing system consists of an oxidant supply module, an ultraviolet oxidation combined module and a biological ecological processing module, wherein the oxidant supply module is arranged near a river discharge port and used for supplying green oxidants such as hydrogen peroxide, chlorine dioxide solution, ozone and the like to the ultraviolet oxidation combined module; the ultraviolet oxidation combination module can efficiently inactivate viruses in the discharged water through the combined action of ultraviolet and various oxidants and has the functions of water quality purification and odor removal; the biological ecological treatment module realizes the advanced treatment of the outlet water through the decomposition and assimilation of microorganisms, the interception and filtration of a filter membrane and the adsorption and absorption of a plant root system. Compared with the prior art, the invention has the advantages of good environmental, ecological, social and economic benefits and the like, and realizes the aims of virus prevention and control, water quality purification and odor removal of outlet water.
Description
Technical Field
The invention relates to the technical field of municipal sewage treatment, in particular to a multistage treatment system for preventing and controlling river course discharge port viruses and an operation method.
Background
The discharge port is used as an important component of a town drainage system, plays a role in discharging rainwater to surface water or entering the surface water after being treated by a sewage treatment plant and the like, is an important part worth paying attention to the upgrading and efficiency increasing action of the drainage system, and related researches show that the outlet of a river channel is an important carrier library of microorganisms and has various human viruses and pathogenic bacteria.
The 2019-nCoV virus may have potential transmission and exposure paths from the toilet to the drain network, to the discharge, and finally into the surface water. If the wastewater carrying a large amount of viruses or pathogenic bacteria flows into surface water through the discharge port, the viruses are easily diffused to a water source and enter a drinking water treatment and supply system, and the public health and the human health are harmed. In addition, due to the fact that the discharge port falls off due to fall or has rapid outflow, splashed water easily forms aerosol, the infection risk of surrounding residents or passing pedestrians is increased, and even a super-propagation event is caused.
The main routes for live viruses to reach the discharge include: the domestic sewage generated by virus infectors enters a combined drainage pipe network, and the viruses reach a discharge port and are discharged into surface water in rainy days; the split-flow rainwater pipeline with the rain and sewage mixed connection also has the problems; third, the surface runoff entraps the surface viruses to enter a shunt rainwater pipe network; sputum, droplets, touch articles and the like generated by virus infected persons outdoors enter a rainwater port through rainwater washing, and then enter a drainage system; the deposits in the drainage pipeline provide favorable environment for virus propagation and propagation, and the deposits carrying viruses are discharged through a discharge port when released into the river in rainy days. The virus has a plurality of ways to enter a drainage pipe network, and the sources of the virus are extremely dispersed, so that the invasion and inoculation of the virus are not easy to be stopped from the sources of a drainage system. But the wastewater in the drainage network will eventually be discharged from the discharge port, compared to the terminal discharge port of the drainage system, which is more feasible for virus killing.
At present, the method for killing germs in the field of water treatment mainly comprises the following steps: ultraviolet irradiation, ozone oxidation, strong oxidant oxidation, chlorination and disinfection, etc. Considering the environmental ecological sensitivity of the discharge port and the surface water body, a treatment process combining the environment-friendly oxidants such as ozone, hydrogen peroxide, chlorine dioxide and the like without secondary pollution and ultraviolet irradiation is adopted. Relevant researches show that the combination of multiple oxidants and ultraviolet can improve the virus killing and pollutant removing efficiency in water and achieve the treatment effect which is not achieved by a single oxidant or a single ultraviolet irradiation. For example: the reaction of pure ozone with organic substances is selective and does not completely decompose the organic substances into CO2And H2O; if the ozone and ultraviolet technologies are combined, the oxidation rate and efficiency can be effectively improved.
The action principle of the ozone and ultraviolet combined water purification and deodorization is shown in the following reaction formulas (1) to (3): wherein O is3Ozone, UV ultraviolet radiation, hv photolysis, O (C), (B), (C), (1D) Represents an excited oxygen atom,. OH represents a hydroxyl radical, H2O2Hydrogen peroxide is shown.
O3+ UV (or h v, lambda < 310nm) → O2+O(1D) (1)
O(1D)+H2O→·OH+·OH→H2O2(in water) (2)
O(1D)+H2O →. OH +. OH (moist air) (3)
Wherein, O3Ozone, UV ultraviolet radiation, hv photolysis, O (C), (B), (C), (1D) Represents an excited oxygen atom,. OH represents a hydroxyl radical, H2O2Hydrogen peroxide is shown.
And the coupling strengthening effect can also be generated by combining ozone and hydrogen peroxide, and the reaction principle is shown in the following reaction formula (4):
2O3+H2O2→·OH+·OH+3O2(4)
the reaction principle of the chlorine dioxide and hydrogen peroxide can generate hypochlorous acid with strong oxidizing property, and is shown in the following reaction formula (5):
2ClO2+H2O2→2HClO2+O2(5)
the combination of hydrogen peroxide and ultraviolet also has a coupling strengthening effect, and the reaction principle is shown in the following reaction formula (6):
H2O2+ UV (or h v, lambda ≈ 200 ~ 280nm) →. OH +. OH (6)
Also, for example, chlorine dioxide solution is used in combination with UV (R represents an organic reactant, R represents*Representing an organic reaction product), the principle of action of which is shown in the following reaction formulae (7) to (8):
R+ClO2→R*+ClO2 -(7)
ClO2 -+hν(λ＜300nm)→2O(1D)+Cl-(8)
therefore, if a plurality of oxidants and ultraviolet combined technology are adopted at the discharge port to remove the virus and the pollutant in the sewage, a satisfactory treatment effect can be achieved. Scholars in the related art also propose: the application of biological treatment process cannot be ignored in the field of virus prevention and control in water treatment. For example, the MBR process has obviously better virus removal rate than chlorination. In fact, the decomposition and assimilation of microorganisms, the interception and filtration of filter membranes, and the adsorption and absorption of substrates and plant roots can all effectively remove viruses in water.
In conclusion, the municipal sewage treatment mainly adopts a biomembrane process, a microporous membrane process and an ecological floating bed process, and the wastewater polluted by viruses or pathogenic bacteria is disinfected and killed by adopting ultraviolet irradiation, ozone oxidation, strong oxidant oxidation, chlorine addition and the like.
Disclosure of Invention
The invention aims to provide a multistage treatment system and an operation method for preventing and controlling river channel discharge viruses aiming at the defects of the prior art, which adopt a multistage treatment technology combining ultraviolet and oxidation with a biomembrane, and realize virus blocking, sludge removal, water quality purification and odor treatment of discharge outlet water through the combined action of oxidant oxidation, ultraviolet irradiation, photocatalysis, biomembrane, aquatic plant, microfiltration membrane and the like, thereby not only effectively realizing the virus prevention and control of discharge outlet water, but also effectively degrading various refractory organic matters in the water, oxidizing reductive odor substances such as ammonia nitrogen, sulfide and the like, and the aquatic plant can absorb various pollutants in water while beautifying the landscape.
In order to realize the purpose of the invention, the technical scheme of the invention is as follows: a multi-stage treatment system for preventing and controlling the virus at the discharge opening of a river channel is characterized by consisting of an oxidant supply module, an ultraviolet oxidation combination module and a biological ecological treatment module. Further, the oxidizer supply module includes: the device comprises an oxidant supply cabin, a liquid oxidant discharge pump, a gaseous oxidant discharge pump, a microporous aeration disc, a multifunctional probe and an electric controller; the oxidant supply cabin consists of a hydrogen peroxide storage cabin, a chlorine dioxide solution storage cabin and an ozone generator; the liquid oxidant discharge pump is connected with the hydrogen peroxide storage cabin and the chlorine dioxide solution storage cabin, and the hydrogen peroxide and the chlorine dioxide solution are conveyed to the ultraviolet oxidation combination module through the liquid oxidant conveying pipe; the gaseous oxidant discharge pump is connected with the aeration disc through a gas transmission pipe; the ultraviolet oxidation combination module consists of a linkage impeller and an ultraviolet lamp which are arranged in the reaction chamber; the top of the reaction chamber is an open horn-shaped water collecting port, a plurality of linked impellers are arranged in the reaction chamber, a barrel with a plurality of water outlet holes is arranged at the lower part of the reaction chamber, and a microporous aeration disc, a multifunctional probe and a plurality of ultraviolet lamps are arranged in the reaction chamber; the biological ecological treatment module consists of a submersible pump, an upflow water distributor and a microporous filter membrane which are arranged in the barrel body; the top of the barrel body is in an open horn shape, a millipore filter membrane and aquatic plants are arranged in the barrel body, an upflow water distributor connected with a submersible pump is arranged in the middle of the barrel body, a plurality of suspended biological balls are arranged above the upflow water distributor, and a guide cylinder is arranged at the bottom of the barrel body and connected with a water outlet hole at the lower part of the reaction chamber; the electric controller is electrically connected with the liquid oxidant discharge pump, the gaseous oxidant discharge pump, the multifunctional probe and the linkage impeller, and the ozone output of the ozone generator and the air output of the gaseous oxidant discharge pump are adjusted according to the ultraviolet irradiation intensity and the water quality condition monitored by the multifunctional probe.
The river discharge outlet water is sequentially subjected to multi-stage treatment by the oxidant supply module, the ultraviolet oxidation combination module and the biological ecological treatment module and then is discharged to a river; the oxidant supply module is arranged near the discharge port of the river channel and used for supplying a plurality of oxidants to the ultraviolet oxidation combined module; the ultraviolet oxidation combination module can efficiently inactivate viruses in the discharged water through the combined action of ultraviolet and various oxidants and has the functions of water quality purification and odor removal; biological ecological treatment module centers on ultraviolet oxidation allies oneself with module setting, and it realizes the advanced treatment of escape effluent through decomposition and assimilation of microorganism, interception and the filtering action of filter membrane, the absorption and the absorption of matrix and plant roots.
Furthermore, the biological ecological treatment modules are a plurality of and are arranged around the ultraviolet oxidation combination module.
Furthermore, the aquatic plants are arranged above the microporous filter membrane through the planting pad, and the microporous filter membrane is horizontally arranged in a bell mouth at the top of the barrel body through a fixing ring and is used for intercepting and filtering viruses and insoluble particulate matters in ascending water flow; the planting pad is fixedly arranged on the fixing ring and used for planting aquatic plants; the plant planting mat comprises a frame net, a substrate and a flow groove; the frame net is positioned above the filter membrane fixing ring and used for filling the matrix; the substrate is made of ceramsite, zeolite, vermiculite, biochar, palm fiber or felt; the flow grooves are groove-shaped, the number of the flow grooves is 3-30, the flow grooves are uniformly distributed on the upper surface of the matrix and are used for guiding the water body treated by the suspended biological balls and the microporous filter membrane into river water.
Furthermore, the suspended biological balls are arranged between the upflow water distributor and the microporous filter membrane.
Furthermore, a cleaning door for removing sludge is arranged at the bottom of the reaction chamber.
Further, the ultraviolet lamp is fixedly arranged in the reaction chamber by a lamp holder, the ultraviolet wavelength of the ultraviolet lamp is 185-254 nm, and the irradiation intensity is 10-50 mJ/cm2(ii) a The lamp holder is made of SS316L or anticorrosive alloy; the shape of the water outlet hole is circular, rectangular or rhombicArea of 10-1000 cm2。
Furthermore, the multi-stage treatment system for preventing and controlling the virus at the discharge outlet of the river channel can realize the virus prevention and control of the discharged water, the water purification and the removal of the stink by using physical, chemical, biological and ecological methods, and the specific operation comprises the following steps:
a, step a: arranging an oxidant supply module, an ultraviolet oxidation combination module and a biological ecological treatment module at a river discharge port and a water area nearby the river discharge port, and realizing the power supply of the system;
b, step (b): when the electric controller of the oxidant supply module detects that the linkage impeller of the ultraviolet oxidation combined module rotates, the liquid oxidant discharge pump starts to add hydrogen peroxide and chlorine dioxide solution to the upper part of the water collecting port of the ultraviolet oxidation combined module through the liquid oxidant conveying pipe, and meanwhile, the gaseous oxidant discharge pump supplies ozone micro bubbles to the reaction chamber of the ultraviolet oxidation combined module through the gaseous oxidant conveying pipe and the microporous aeration disc;
c, step (c): the discharged water is buffered and energy-dissipated by a linkage impeller (21) of the ultraviolet oxidation combination module (2), and after being stirred and mixed, the virus disinfection and killing and pollutant removal of the discharged water (5) are realized through the combined action of ultraviolet, hydrogen peroxide, chlorine dioxide and ozone in a reaction chamber;
d, step: the water discharged from the discharge port treated by the ultraviolet oxidation coupling module enters the barrel body of the biological ecological treatment module from a water outlet hole at the lower part of the reaction chamber through a guide cylinder, sequentially flows through the suspended biological balls, the microporous filter membrane, the plant planting pad and the aquatic plant under the lifting and water distribution effects of the submersible pump and the upflow water distributor, and deeply removes viruses and pollutants in water through the comprehensive effects of microbial transformation, filter membrane interception, matrix adsorption and plant absorption.
Further, the pumping flow rates of the hydrogen peroxide solution and the chlorine dioxide solution from the liquid oxidant discharge pump are both 10-100L/m3And the fullness degree of the hydrogen peroxide storage cabin and the chlorine dioxide solution storage cabin is more than or equal to 20 percent; the purity of the hydrogen peroxide is 20-80%, and the concentration of the chlorine dioxide solution is 50-500 mg/L; the gaseous oxidant discharge pumpThe pressure of the gas is 1.5-10 atm, and the ozone concentration is 1-10 mg/L.
Further, the flow rate of the submersible pump is 5-50 m3The delivery lift is 1-5 m; the suspended biological ball is made of PE, PP or synthetic fiber, and the density rho of the suspended biological ball is 1g/cm2(ii) a The aquatic plant species comprise cattail, calamus, allium fistulosum, loosestrife, water spinach or cress, and the planting density is 10-30 plants/m2。
Further, the water quality of the water body monitored by the multifunctional probe comprises: dissolved oxygen, redox sites, pH, turbidity, temperature, total organic carbon, ammonia nitrogen and reducing sulfides.
Furthermore, the number of the linkage impellers is 1-10, and hubs of the linkage impellers are connected with a rotating shaft of the generator and used for converting partial kinetic energy of rotation of the impellers into electric energy so as to assist the power supply of the system.
Further, the bottom of the reaction chamber is provided with a cleaning and drawing door for removing sludge, the cleaning and drawing door is closed at ordinary times and is opened periodically to clean and draw impurities such as sludge, the cleaning and drawing door is rectangular in shape and 20-2000 cm in area2The frequency of opening the cleaning is 1-5 times/month.
Compared with the prior art, the invention has the following advantages:
1) high applicability
Through reasonable collocation and layout of the oxidant supply module, the ultraviolet oxidation combination module and the biological ecological treatment module in the receiving water body, the requirements of omnibearing, deep and high-efficiency virus prevention and control and water environment improvement of different types of river channel discharge openings can be met.
2) Fast and efficient
The multi-stage treatment system formed by the modules has a more rapid and efficient treatment effect than a single process, and the removal rate of viruses and pollutants is guaranteed in an all-round, multi-level and deep manner in the treatment process of the river discharge outlet water in the multi-stage treatment modules.
3) Multiple functions
The method has the functions of quickly killing the virus at the discharge port of the river channel, deeply removing ammonia nitrogen and refractory organic matters, improving the hydraulic circulation condition of the river channel, strengthening the self-cleaning capacity of the water body, inhibiting the growth of algae, improving the aesthetic value of landscape and the like.
4) Flexible operation
All modules of the system can run jointly to achieve the effect of multi-stage treatment of the water discharged from the discharge port of the river channel; other modules can be independently operated when a certain module is stopped to be maintained so as to ensure the effects of disinfection, water purification and deodorization of outlet water under special conditions.
5) High comprehensive profit
The method can effectively block the virus transmission way at the tail end of the urban drainage system, ensure and maintain public health and ecological system safety, improve water environment quality, and improve the human water affinity degree, thereby generating good environmental, ecological, social and economic benefits.
Drawings
FIG. 1 is a schematic diagram of a multi-stage processing system according to the present invention;
FIG. 2 is a schematic diagram of an oxidant supply module;
FIG. 3 is a schematic structural diagram of a UV oxidation coupling module;
FIG. 4 is a schematic structural diagram of a biological ecological treatment module;
FIG. 5 is a schematic diagram of a multi-stage processing system according to the present invention;
fig. 6 is a top plan view of fig. 5.
Detailed Description
Referring to the attached figure 1, the invention is composed of an oxidant supply module 1, an ultraviolet oxidation combination module 2 and a biological ecological treatment module 3, wherein the oxidant supply module 1 comprises: the system comprises an oxidant supply cabin 11, a liquid oxidant discharge pump 12, a gaseous oxidant discharge pump 14, a microporous aeration disc 16, a multifunctional probe 17 and an electric controller 18; the microporous aeration disc 16 and the multifunctional probe 17 are arranged in a reaction chamber 23 of the ultraviolet oxidation combined module 2; the electric controller 18 is electrically connected with the liquid oxidant discharge pump 12, the gaseous oxidant discharge pump 14, the multifunctional probe 17 and the linkage impeller 21, and the ozone output of the ozone generator 113 and the air output of the gaseous oxidant discharge pump 14 are adjusted according to the ultraviolet irradiation intensity and the water quality condition monitored by the multifunctional probe 17.
Referring to fig. 2, the oxidant supply compartment 11 is composed of a hydrogen peroxide storage compartment 111, a chlorine dioxide solution storage compartment 112 and an ozone generator 113; the liquid oxidant discharge pump 12 is connected with a hydrogen peroxide storage cabin 111 and a chlorine dioxide solution storage cabin 112, and hydrogen peroxide and the chlorine dioxide solution are conveyed to the ultraviolet oxidation combination module 2 through a liquid oxidant conveying pipe 13; the gaseous oxidant discharge pump 14 is connected with the aeration disc 16 through a gas pipe.
Referring to fig. 3, the ultraviolet oxidation module 2 is composed of a linkage impeller 21 and an ultraviolet lamp 24 which are arranged in a reaction chamber 23; the top of the reaction chamber 23 is provided with an open horn-shaped water collecting port 22, a plurality of linked impellers 21 are arranged in the reaction chamber, the lower part of the reaction chamber is provided with a barrel with a plurality of water outlet holes 25, and a microporous aeration disc 16, a multifunctional probe 17 and a plurality of ultraviolet lamps 24 are arranged in the reaction chamber; the bottom of the reaction chamber 23 is provided with a cleaning door 27 for removing sludge.
Referring to fig. 4, the bio-ecological treatment module 3 is composed of a submersible pump 33, an upflow water distributor 34 and a microporous filter membrane 36 which are arranged in a barrel 32; the top of the barrel body 32 is in an open horn shape, a millipore filter 36 and aquatic plants 39 are arranged in the barrel body, an upflow water distributor 34 connected with a submersible pump 33 is arranged in the middle of the barrel body 32, a plurality of suspended biological balls 35 are arranged above the upflow water distributor, and a guide cylinder 31 arranged at the bottom of the barrel body 32 is connected with a water outlet 25 at the lower part of the reaction chamber 23; the aquatic plants 39 are arranged above the microporous filter membrane 36 through a planting pad 38, and the microporous filter membrane 36 is horizontally arranged in a bell mouth at the top of the barrel body 32 through a fixing ring 37; the planting mat 38 is fixedly arranged on the fixing ring 37; the suspended biological balls 35 are arranged between the upflow water distributor 34 and the microporous filter membrane 36.
The upflow water distributor 34 is horizontally arranged in the barrel body 32, and the edge of the upflow water distributor is clamped with a rotary groove of a wheel disc arranged on the inner wall of the barrel body 32; the rising water distributor 34 is provided with water receiving holes and water distributing holes, the water receiving holes are single, the openings of the water receiving holes are downward and are arranged in the center of the rising water distributor 34 for collecting the water flow lifted by the lifting pump; the number of the water distribution holes is 5-50, the openings of the water distribution holes are upward and uniformly distributed in the upflow water distributor 34, and the water distribution holes are used for uniformly distributing water flow guided by the water receiving holes upward; the motor is linked with the upflow water distributor and drives the upflow water distributor to rotate, and the rotation rate of the upflow water distributor is 0.2-10 r/min; the upflow water distributor is provided with a water tank for communicating the water receiving hole and the water distribution hole.
The operation of the present invention will be further described in detail with reference to the following specific examples.
Example 1
Referring to the attached drawings 5-6, the invention realizes the virus prevention and control of the outlet water of the discharge port, the water quality purification and the odor removal by using physical, chemical, biological and ecological methods, and the specific operation comprises the following steps:
a, step a: arranging an oxidant supply module 1, an ultraviolet oxidation combined module 2 and a biological ecological treatment module 3 at a river discharge port 4 of a revetment 7 and a water area nearby the river discharge port, and realizing the power supply of the system, wherein the biological ecological treatment modules 3 are three modules which are arranged around the ultraviolet oxidation combined module 2 and are fixedly arranged on a river bottom 9 together with the ultraviolet oxidation combined module 2; the oxidant supply module 1 is arranged near the river discharge port 4 and used for supplying green oxidants such as hydrogen peroxide, chlorine dioxide solution and ozone to the ultraviolet oxidation combined module 2. The effluent 5 from the discharge outlet and the hydrogen peroxide and chlorine dioxide solution output by the oxidant supply module 1 flow into the water collecting port 22 of the ultraviolet oxidation combined module 2, and the flow rates of the hydrogen peroxide and the chlorine dioxide solution of the oxidant supply module 1 are both 10-100L/m3And the fullness degree of more than or equal to 20 percent is ensured; the purity of the hydrogen peroxide is 20-80%, and the concentration of the chlorine dioxide solution is 50-500 mg/L; the pressure of the gas pumped out by the gaseous oxidant discharge pump 14 is 1.5-10 atm, and the ozone concentration is 1-10 mg/L.
b, step (b): when the electric controller 18 of the oxidant supply module 1 detects that the linkage impeller 21 of the ultraviolet oxidation combined module 2 rotates, the liquid oxidant discharge pump 12 starts to add hydrogen peroxide and chlorine dioxide solution to the upper part of the water collecting port 22 of the ultraviolet oxidation combined module 2 through the liquid oxidant conveying pipe 13, and meanwhile, the gaseous oxidant discharge pump 14 supplies ozone microbubbles to the reaction chamber 23 of the ultraviolet oxidation combined module 2 through the gaseous oxidant conveying pipe 15 and the microporous aeration disc 16; the ultraviolet lamp 24 is fixed in the reaction chamber 23 by a lamp holder and has an ultraviolet wavelength185-254 nm, and the irradiation intensity is 10-50 mJ/cm2。
c, step (c): the water 5 discharged from the discharge port is buffered and energy-dissipated by the linked impeller 21 at the water collecting port 2, is stirred and mixed with hydrogen peroxide and chlorine dioxide solution and then enters the reaction chamber 23, and virus disinfection and killing and pollutant removal of the water 5 discharged from the discharge port are realized through the combined action of ultraviolet, hydrogen peroxide, chlorine dioxide and ozone.
d, step: the water 5 discharged from the discharge port treated by the ultraviolet oxidation coupling module 2 flows from a water outlet 25 at the lower part of the reaction chamber 23, the water flow 8 enters a barrel body 32 of the biological ecological treatment module 3 through a guide cylinder 31, and sequentially flows through a suspended biological ball 35, a microporous filter membrane 36, a plant planting pad 38 and an aquatic plant 39 under the lifting and water distribution effects of a submersible pump 33 and an upflow water distributor 34, so that viruses and pollutants in water are deeply removed through the comprehensive actions of microbial transformation, filter membrane interception, matrix adsorption and plant absorption; the flow rate of the submersible pump 33 is 5-50 m3The delivery lift is 1-5 m; the suspended biological ball 35 is made of PE, PP or synthetic fiber, and the density rho of the suspended biological ball is 1g/cm2(ii) a The aquatic plant 39 is selected from Typha angustifolia, Acorus calamus, Scirpus tabernaemontani, Lythra serpentinatum, water spinach or water cress, and has a planting density of 10-30 plants/m2。
And the outlet water 5 is discharged to the water surface of the river after being sequentially subjected to multistage treatment by the oxidant supply module 1, the ultraviolet oxidation combination module 2 and the biological ecological treatment module 3. The invention fully utilizes the water area space of the receiving water body, comprehensively utilizes physical, chemical, biological and ecological methods through the exquisite design and the multi-stage collocation of each functional module, and realizes the aims of virus prevention and control, water quality purification and odor removal of the outlet water of the discharge port. The above embodiments are only for further illustration of the present invention and are not intended to limit the present invention, and all equivalent implementations of the present invention should be included in the scope of the claims of the present invention.
Claims (9)
1. A multi-stage processing system for river course row mouth virus prevention and control, characterized in that this multi-stage processing system comprises oxidant supply module (1), ultraviolet oxidation allies oneself with module (2) and biological ecological treatment module (3), oxidant supply module (1) includes: an oxidant supply cabin (11), a liquid oxidant discharge pump (12), a gaseous oxidant discharge pump (14), a microporous aeration disc (16), a multifunctional probe (17) and an electric controller (18); the oxidant supply cabin (11) consists of a hydrogen peroxide storage cabin (111), a chlorine dioxide solution storage cabin (112) and an ozone generator (113); the liquid oxidant discharge pump (12) is connected with the hydrogen peroxide storage cabin (111) and the chlorine dioxide solution storage cabin (112), and the hydrogen peroxide and the chlorine dioxide solution are conveyed to the ultraviolet oxidation combination module (2) through the liquid oxidant conveying pipe (13); the gaseous oxidant discharge pump (14) is connected with the aeration disc (16) through a gas transmission pipe; the ultraviolet oxidation combined module (2) consists of a linkage impeller (21) and an ultraviolet lamp (24) which are arranged in a reaction chamber (23); the top of the reaction chamber (23) is provided with an open horn-shaped water collecting opening (22) in which a plurality of linked impellers (21) are arranged, the lower part of the reaction chamber is provided with a barrel provided with a plurality of water outlet holes (25), and a microporous aeration disc (16), a multifunctional probe (17) and a plurality of ultraviolet lamps (24) are arranged in the reaction chamber; the biological ecological treatment module (3) consists of a submersible pump (33), an upflow water distributor (34) and a microporous filter membrane (36) which are arranged in a barrel body (32); the top of the barrel body (32) is in an open horn shape, a microporous filter membrane (36) and aquatic plants (39) are arranged in the barrel body, an upflow water distributor (34) connected with a submersible pump (33) is arranged in the middle of the barrel body (32), a plurality of suspended biological balls (35) are arranged above the upflow water distributor, and a guide cylinder (31) is arranged at the bottom of the barrel body (32) and connected with a water outlet (25) at the lower part of the reaction chamber (23); the electric controller (18) is electrically connected with the liquid oxidant discharge pump (12), the gaseous oxidant discharge pump (14), the multifunctional probe (17) and the linkage impeller (21), and the ozone yield of the ozone generator (113) and the gas discharge amount of the gaseous oxidant discharge pump (14) are adjusted according to the ultraviolet radiation intensity and the water quality condition monitored by the multifunctional probe (17).
2. The multistage treatment system for preventing and controlling the virus at the drainage port of the river channel according to claim 1, wherein the number of the biological ecological treatment modules (3) is several, and the biological ecological treatment modules are arranged around the ultraviolet oxidation combined module (2).
3. The multi-stage treatment system for prevention and control of viruses at the discharge opening of a river channel according to claim 1, wherein the aquatic plants (39) are arranged above the microfiltration membrane (36) by a planting pad (38), and the microfiltration membrane (36) is horizontally arranged in a bell mouth at the top of the barrel body (32) by a fixing ring (37); the planting mat (38) is fixedly arranged on the fixing ring (37).
4. The multistage treatment system for preventing and controlling the virus at the drainage port of the river channel according to claim 1, wherein the suspended biological balls (35) are arranged between the upflow water distributor (34) and the microporous filter membrane (36).
5. The multistage treatment system for virus prevention and control of river discharge according to claim 1, wherein the bottom of the reaction chamber (23) is provided with a cleaning door (27) for removing sludge.
6. The multistage treatment system for preventing and controlling the virus at the drain outlet of the river channel according to claim 1, wherein the ultraviolet lamp (24) is fixedly arranged in the reaction chamber (23) by a lamp holder, the ultraviolet wavelength is 185-254 nm, and the irradiation intensity is 10-50 mJ/cm2。
7. The operation method of the multistage treatment system for preventing and controlling the virus at the drainage port of the river channel of claim 1 is characterized in that the multistage treatment system realizes the virus prevention and control of the drainage outlet water and the purification of water quality and the removal of foul smell by using physical, chemical, biological and ecological methods, and the specific operation comprises the following steps:
a, step a: arranging an oxidant supply module (1), an ultraviolet oxidation combined module (2) and a biological ecological treatment module (3) at a river discharge port (4) and a water area nearby the river discharge port, and realizing the power supply of the system;
b, step (b): when an electric controller (18) of an oxidant supply module (1) detects that a linkage impeller (21) of an ultraviolet oxidation combination module (2) rotates, a liquid oxidant discharge pump (12) starts to add hydrogen peroxide and chlorine dioxide solution above a water collecting port (22) of the ultraviolet oxidation combination module (2) through a liquid oxidant conveying pipe (13), and meanwhile, a gaseous oxidant discharge pump (14) supplies ozone microbubbles to a reaction chamber (23) of the ultraviolet oxidation combination module (2) through a gaseous oxidant conveying pipe (15) and a microporous aeration disc (16);
c, step (c): the discharged water (5) is buffered and energy-dissipated by a linkage impeller (21) of the ultraviolet oxidation combination module (2), and after being stirred and mixed, the virus disinfection and killing and pollutant removal of the discharged water (5) are realized through the combined action of ultraviolet, hydrogen peroxide, chlorine dioxide and ozone in a reaction chamber (23);
d, step: the water (5) discharged from the discharge port treated by the ultraviolet oxidation combination module (2) enters a barrel body (32) of the biological ecological treatment module (3) from a water outlet hole (25) at the lower part of the reaction chamber (23) through a guide cylinder (31), sequentially flows through suspended biological balls (35), a microporous filter membrane (36), a plant planting pad (38) and aquatic plants (39) under the lifting and water distribution effects of a submersible pump (33) and an upflow water distributor (34), and viruses and pollutants in water are deeply removed through the comprehensive actions of microbial transformation, filter membrane interception, matrix adsorption and plant absorption.
8. The treatment method of the multilevel processing system for preventing and controlling the river course discharge port virus according to claim 7, wherein the flow rates of the hydrogen peroxide solution and the chlorine dioxide solution of the oxidant supply module (1) are both 10-100L/m3And the fullness degree of more than or equal to 20 percent is ensured; the purity of the hydrogen peroxide is 20-80%, and the concentration of the chlorine dioxide solution is 50-500 mg/L; the pressure of the gas pumped out by the gaseous oxidant discharge pump (14) is 1.5-10 atm, and the ozone concentration is 1-10 mg/L.
9. The treatment method of the multistage treatment system for preventing and controlling the virus at the drainage port of the river channel according to claim 7, wherein the flow rate of the submersible pump (33) is 5-50 m3/h，The lift is 1-5 m; the suspended biological ball (35) is made of PE, PP or synthetic fiber with densityρ=1g/cm2(ii) a The aquatic plant (39) comprises cattail, calamus, allium mongolicum regel, loosestrife, water spinach or cress, and the planting density is 10-30 plants/m2。
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