CN105174606B - A kind of membrane technology medical waste water with disinfection by ultraviolet light processes device - Google Patents
A kind of membrane technology medical waste water with disinfection by ultraviolet light processes device Download PDFInfo
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Abstract
The invention provides a kind of membrane technology medical waste water processing method with disinfection by ultraviolet light and device, belong to technical field of sewage.It solve existing sewage disposal and be easily generated the technical problems such as mud, sewage-treatment plant floor space be big.This medical waste water processing method includes a, pretreatment: is inserted by sewage in decomposing pool and utilizes Unareobic fermentation to process sewage；B, Aerobic Process for Treatment: will insert in Aeration tank through the step a sewage processed, utilize aeration means to make air and sewage be fully contacted；C, membrane module process: process inserting membrane module through the step b sewage processed in pond, and utilize film-bioreactor the float in sewage to be filtered and retain, the Organic substance in sewage and oxidizable substance are degraded；D, disinfection by ultraviolet light discharge etc., present invention additionally comprises the device implementing the method.This medical waste water processing method outlet effect is good, and float, less than 10mg/, utilizes ultraviolet sterilization non-secondary pollution, runs safety, reliable and cost and operation and maintenance cost are low.
Description
Technical field
The invention belongs to medical waste water processing technology field, relate to a kind of membrane technology medical waste water processing method with disinfection by ultraviolet light and device.
Background technology
Freshwater resources in the world are deficienter comparatively speaking, and China is a serious water shortage country, and sewage disposal and reuse are one of effective measures developing water resource.Reusing sewage be municipal sewage, trade effluent etc. are processed by sewage-treatment plant after, reused；Various sewage can obtain nearby, can remove long distance water transfer from, and realize processing nearby realizing making full use of of water resource, and sewage processes through nearby simultaneously, it is possible to prevents sewage from causing effluent seepage in long distance delivery process, causes polluted underground water source；The area of many hydropenias is widely used in the world for reusing sewage.
China's patent (notification number: CN203946925U；Publication date: 2014-11-19) disclose a kind of sewage treatment pot, filtration membrane cartridge and filter membrane automatic cleaning apparatus it is provided with in its tank body, under the effect of filtration membrane cartridge, dirt in sewage can form filter membrane, filter membrane automatic cleaning apparatus makes the filter membrane vibration, the partial exfoliation that are formed by dirt, filter membrane can be effectively prevented harden, reduce cleaning frequency and the maintenance cost of sewage treatment pot, the working time making sewage treatment pot extends, sewage load increases, and sewage treatment capacity is improved；By arranging flusher, when sewage treatment pot quits work, tank body and/or filtration membrane cartridge are rinsed, cured to prevent the dirt retention in sewage from forming extension on the internal face of tank body, water space excessively or dirt retention is on filtration membrane cartridge, on blocking filtration membrane cartridge.
Although the sewage treatment pot in above-mentioned patent is provided with filter membrane automatic cleaning apparatus can cleaned filter membrane, but this apparatus structure is complicated, take up room bigger, the common filter membrane that in above-mentioned patent, sewage treatment pot adopts simultaneously can be settled out substantial amounts of mud, it is difficult to process, and the Effects of Water Quality filtered has much room for improvement.
Summary of the invention
The present invention is directed to the problems referred to above that existing technology exists, a kind of membrane technology medical waste water processing method with disinfection by ultraviolet light and device are provided, the technical problem to be solved: one is the Effects of Water Quality after how improving sewage treating efficiency and sewage disposal, two is how to reduce the floor space of sewage-treatment plant and improve the Effects of Water Quality after sewage disposal.
First purpose of the present invention can be realized by following technical proposal:
A kind of membrane technology medical waste water processing method with disinfection by ultraviolet light, it is characterised in that the described membrane technology medical waste water processing method with disinfection by ultraviolet light comprises the following steps:
A, pretreatment: inserted by sewage in decomposing pool, utilize Unareobic fermentation to process sewage；
B, Aerobic Process for Treatment: will insert in Aeration tank through the step a sewage processed, utilize aeration means to make air and sewage be fully contacted；
C, membrane module process: process in pond by inserting membrane module through the step b sewage processed, utilize film-bioreactor the float in sewage to be filtered to retain, and the Organic substance in sewage and oxidizable substance are degraded or oxidation Decomposition, reduce the bod in sewage and biochemical oxygen demand figureofmerit；
D, sterilization discharge: utilize the sewage sucking-off that self priming pump will process through step c, and enter ultraviolet tube lamp sterilization, discharge after reaching discharge standard.
Its principle is as follows: adopt MBR (MembraneBio-Reactor in the technical program, film-bioreactor) as sewage disposal purification membrane assembly, sewage enters district decomposing pool pretreatment, Unareobic fermentation is utilized to process sewage, under the effect of anaerobe, to biodegradable high-concentration sewage through anaerobic fermentation, major part Organic substance is degraded, make Preliminary sewage purify, the process of degradation of organic substances constantly produces mud.Then sewage enters in two district's Aeration tanks, air and sewage is made strongly to be fully contacted through aeration structure, its object is to be dissolved in sewage by the oxygen in air, gas unwanted in sewage and volatile material are banished in air, promote mass exchange between gas and liquid, thus further Aerobic Process for Treatment, the purpose that aeration structure can also be sufficiently mixed by making water movement reach and stir, oxygen in air is delivered in sewage by aeration and contacts with Organic substance or oxidizable substance, reduce COD and the BOD (COD:ChemicalOxygenDemand in sewage, utilize chemical oxidizing agent by oxidizable substance oxidation Decomposition in water, the gauge of the oxidant according to residual calculates the consumption of oxygen；BOD:BiochemicalOxygenDemand, Biochemical oxygen demand or bod, represent a comprehensive instruction of the aerobic pollution matter content such as Organic substance in water) index.Then sewage enters back into three district's membrane modules and processes pond via film-bioreactor process, retain the Organic substance in float and degradation of sewage and oxidizable substance, then passing through self priming pump utilizes outlet conduit that the sewage after processing is sucked out and entered quartz burner and carries out disinfection, last qualified discharge.
The technical program may be used for medical waste water and processes, and this process standard adopts the regulation of " medical waste water discharge standard " (GB/T18466-2005).
Above-mentioned with in the membrane technology medical waste water processing method of disinfection by ultraviolet light, before step a, utilize pipeline to collect sanitary wastewater, remove bulky grain float in sewage by grid pond.
Above-mentioned with in the membrane technology medical waste water processing method of disinfection by ultraviolet light, in step a, the preliminary float removed in sewage and Organic substance make the index of float and bod in sewage respectively reach 40%～50% and 20%～30%.SS (SuspendedSubstance after step a processes, float in water quality) reach 40%～50%, preferably 45%, BOD (BiochemicalOxygenDemand, Biochemical oxygen demand or bod, representing a comprehensive instruction of the aerobic pollution matter content such as Organic substance in water) index reaches 20%～30%, it is preferred to 25%.
Above-mentioned with in the membrane technology medical waste water processing method of disinfection by ultraviolet light, in step c, film-bioreactor is utilized to retain the float of 90%-95% in sewage.After step c processes, the float in sewage is filtered further and is processed, and the clearance of SS (SuspendedSubstance, the float in water quality) reaches 90%-95%, thus meeting sewage disposal discharge standard.
Above-mentioned with in the membrane technology medical waste water processing method of disinfection by ultraviolet light, in step d, the ultraviolet light that quartz burner sends is C ray, and wavelength is 240nm～260nm.In the technical program, optimal wavelength is the ultraviolet of 253.7nm.Ultraviolet sterilization UV lamp sends the ultraviolet of wavelength 253.7nm, and ultraviolet germicidal lamp just can kill bacterial virus within several seconds time, and germicidal efficiency is up to 99%.This ultraviolet makes to form thymine dimer in antibacterial and the protein generation degeneration dissociation of virus, nucleic acid, thus destroying DNA and the RNA structure of various virus and antibacterial, kills the inextinguishable antibacterial of other sterilization methods.
The UV photons of each wavelength 253.7nm has the energy of 4.9eV.When ultraviolet radiation to microorganism, transmission and the accumulation of energy just occurring, accumulation result causes bacteria inactivation rate, thus reaching the purpose of sterilization.Working as antibacterial, virus adsorption is more than 3600～65000uW/cm2During metering, antibacterial, viral deoxyribose nucleic acid (DNA) and ribonucleic (RNA) are had powerful destructive power, antibacterial, virus can be made to lose viability and reproductive capacity and then eliminating bacteria, virus, reach sterilization effect.Ultraviolet can make nucleic acid mutation on the one hand, hinders it to replicate, and transcribes the synthesis of block and protein；Produce free radical on the one hand and can cause photo-ionisation, thus causing the death of cell.
Second purpose of the present invention can be realized by following technical proposal:
A kind of membrane technology medical waste water with disinfection by ultraviolet light processes device, it is characterized in that, the described membrane technology medical waste water with disinfection by ultraviolet light processes the tank body that device includes having cavity, the water inlet of connection cavity is offered on the upside of described tank body, described cavity includes decomposing pool spaced apart from each other, Aeration tank and membrane module process pond, described water inlet is above described decomposing pool and between described decomposing pool and Aeration tank, described Aeration tank processes with described membrane module and is all connected between pond, it is provided with aeration structure in described Aeration tank, described membrane module processes in pond and is provided with film-bioreactor, described membrane module processes in pond and is connected to outlet conduit, the described membrane technology medical waste water with disinfection by ultraviolet light processes the quartz burner that device also includes can the liquid in outlet conduit being carried out disinfection.
Its principle is as follows: use the membrane technology medical waste water processing method with disinfection by ultraviolet light of first technical scheme, and combine and in technical scheme, membrane technology medical waste water with disinfection by ultraviolet light processes device and reaches to process the purpose of sewage, the sanitary wastewater collected is connected with the water inlet on this tank body through piping, sewage flows into decomposing pool from water inlet, at decomposing pool through preliminary sedimentation and decomposition, air and sewage is made strongly to be fully contacted through aeration structure in Aeration tank again, its object is to be dissolved in sewage by the oxygen in air, gas unwanted in sewage and volatile material are banished in air, promote mass exchange between gas and liquid, thus further Aerobic Process for Treatment；Then process in pond to membrane module again, membrane module processes to cultivate in pond substantial amounts of domestication antibacterial, double oxygen, aerobic microbiological metabolism under, each pollutant in sewage is removed, " solid-liquid separation " can be accomplished completely by the filtration of film, thus it is extremely low to ensure that delivery turbidity is down to, each pollutant in sewage is further removed also by the filtration of film.Sewage adopts ultraviolet sterilization again after film-bioreactor processes, the ultraviolet that quartz burner is launched can make protein generation degeneration dissociate, nucleic acid is formed thymine dimer, destroy DNA and the RNA structure of various virus and antibacterial, cause antibacterial and the death of virus, additionally it is possible to kill the antibacterial that other sterilization methods can not sterilize；The ultraviolet that this quartz burner is launched just can kill bacterial virus within several seconds time, and germicidal efficiency is up to 99%.Eventually passing outlet conduit and discharge the good water of water quality, the Recovery Purifying completing sewage utilizes.The membrane technology medical waste water process apparatus structure of this band disinfection by ultraviolet light is compact, and floor space is little, and the mud of generation is few, and sewage treating efficiency is high, and Effects of Water Quality is good.
Processing in pond at membrane module, organic degraded completes under facultative anaerobic bacterium effect mainly by the mud forming higher concentration；Macromole organic pollution is gradually degraded as small organic molecule, and final oxidation Decomposition is CO2、H2The inorganic substances that O etc. are stable, owing to the generation of facultative anaerobe does not need the guarantee of dissolved oxygen, so reducing power consumption.Film-bioreactor is while realizing waste water treating and reutilizing, it is achieved that the significantly decrement of organic sludge, it may be achieved substantially without organic residual mud discharging, successfully solves excess sludge disposal difficulties.
Newly-increased Organic substance is broken down into small organic molecule in the effect next part of facultative anaerobe, then oxidized is decomposed into CO2、H2The inorganic matters such as O；Another part is synthesized into cell.When low sludge loading, this cell is broken down into again small organic molecule as nutrient in facultative anaerobe effect next part, then oxidized is again decomposed into CO2、H2The inorganic matters such as O；Another part is synthesized into again new cell.The rest may be inferred, and when low sludge loading, this new cell is again as nutrient, and under the effect of facultative anaerobe, continuation is made to decompose and the metabolism of synthesis, until cell finally whole metabolism are CO2、H2The inorganic matters such as O.
When cell newly-increased in system is equal to metabolic rate, organic sludge zero growth rate.The applicant is monitored out when mud autodigestion reaches dynamic equilibrium with propagation by long-term experiment, and intrasystem sludge loading maintains essentially in 0.072kg (COD)/kg (MLSS d).Water inlet organic contamination substrate concentration is high, and newly-increased cell is many, and metabolic rate is high, and MLVSS raises；Otherwise, water inlet organic contamination substrate concentration is low, and newly-increased cell is few, and metabolic rate is low, and MLVSS reduces.Owing to antibacterial can be retained down by film-bioreactor, sludge concentration can fluctuate with influent concentration in relatively wide scope, guarantee that system can be run under 0.072kg (COD)/this sludge loading of kg (MLSS d), it is achieved organic residual mud near-zero release.And by the operation of not sludge discharge way, it is possible to maintain longer sludge age, it is suppressed that hyphomycetic propagation, solve the sludge bulking problem in not spoil disposal situation.
Sewage dephosphorization technology mainly has chemical dephosphorization and biological phosphate-eliminating, and chemical dephosphorization dosing is big, and the chemical sludge of generation is many, and operating cost is high；Biological phosphate-eliminating need to be realized by spoil disposal, there is excess sludge and processes a difficult problem, and the technical program utilizes film-bioreactor that organic sludge is decomposed, and solves this difficult problem.
Also adopting oxygen biogasification dephosphorization process of holding concurrently in the technical program, the reaction mechanism of Anammox is: under certain condition, and Nitrification produces substantial amounts of NO2-Accumulation, anaerobic ammonia oxidizing bacteria is first by NO2-Change into NH2OH, then with NH2OH is that electron acceptor is by NH4+Oxidation generates N2H4；N2H4Change into N2, and be NO2-It is reduced into NH2OH provides electronics, has a small amount of NO in experiment2-It is oxidized to NO2-.Owing to achieving short distance nitration, Anammox effect, decrease oxygen supply, aeration energy consumption and denitrification needed for carbon source is greatly reduced, it is achieved thereby that efficient denitrification purpose.On the implementation, not only to optimize nutritional condition and environmental condition, promote the growth of anaerobic ammonia oxidizing bacteria, to manage improve the settling property of thalline and improve the structure of reactor simultaneously, promote function bacterium effectively to hold and stay.
The chemical reaction that Anammox relates to is:
NH2OH+NH3→N2H4+H2O；
N2H4→N2+ 4 [H]；
HNO2+4[H]→NH2OH+H2O。
Process in device at the above-mentioned membrane technology medical waste water with disinfection by ultraviolet light, it is interval with dividing plate one straight up and dividing plate two, described dividing plate one and dividing plate two in described tank body successively the cavity of described tank body is divided into described decomposing pool, Aeration tank and membrane module to process pond；The upper surface of described dividing plate one and dividing plate two is equal and has gap between the upper inside walls of described tank body.Sewage is flushed to bottom under gravity from water inlet after entering from top to bottom, processing procedure reaches a certain amount of after automatically cover dividing plate one or dividing plate two, enter next process, while improving automatization, ensure fully reaction.
Process in device at the above-mentioned membrane technology medical waste water with disinfection by ultraviolet light, the described membrane technology medical waste water with disinfection by ultraviolet light processes device and also includes outlet, described quartz burner is arranged on above described tank body, described outlet conduit is provided with self priming pump, one end of described outlet conduit is arranged on described film-bioreactor side, and described outlet conduit is connected through ultraviolet radiation region and the described outlet conduit other end of described quartz burner with described outlet.
Process in device at the above-mentioned membrane technology medical waste water with disinfection by ultraviolet light, described aeration structure includes being arranged on the blower fan above described tank body, described Aeration tank is provided with some diffusion discs with aperture of giving vent to anger near bottom interval, and the aperture of giving vent to anger of described diffusion disc is connected by breather line one with described blower fan.Diffusion disc in the technical program includes the coniform blade that escape pipe upper end is arranged, and coniform blade is offered some apertures of giving vent to anger, and aperture of giving vent to anger is connected with escape pipe, and escape pipe lower end breather line one is connected.
Processing in device at the above-mentioned membrane technology medical waste water with disinfection by ultraviolet light, described blower fan is also associated with breather line two, and the gas outlet of described breather line two is positioned at described film-bioreactor place.In the technical program, film-bioreactor place is ventilated by blower fan by breather line two, thus the film silk of film-bioreactor is washed away, shakes, and prevent pollution and the blocking of film-bioreactor, the dissolved oxygen simultaneously produced just are used for the oxidation of part small organic molecule and maintain the dissolved oxygen value of water outlet.
Compared with prior art, the technical scheme in the present invention has the advantage that
1, the membrane technology medical waste water processing method outlet effect of this band disinfection by ultraviolet light is good, and float is less than 10mg/L.
2, the membrane technology medical waste water processing method of this band disinfection by ultraviolet light utilizes ultraviolet sterilization non-secondary pollution, runs safety, reliable and cost and operation and maintenance cost are low.
3, the membrane technology medical waste water process plant area area of this band disinfection by ultraviolet light is few, and integrated level is high, organic sludge near-zero release, reduces secondary pollution.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the membrane technology medical waste water processing method of this band disinfection by ultraviolet light.
Fig. 2 be this band disinfection by ultraviolet light membrane technology medical waste water process device face structural representation.
Fig. 3 is the plan structure schematic diagram of the membrane technology medical waste water process device of this band disinfection by ultraviolet light.
In figure, 1, tank body；2, cavity；3, water inlet；4, outlet；5, self priming pump；6, dividing plate one；7, dividing plate two；8, decomposing pool；9, Aeration tank；10, membrane module processes pond；11, film-bioreactor；12, aeration structure；121, blower fan；122, diffusion disc；123, breather line one；13, outlet conduit；14, breather line two；15, quartz burner.
Detailed description of the invention
The following is specific embodiments of the invention and in conjunction with accompanying drawing, technical scheme is further described, but the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2 and Figure 3, the membrane technology medical waste water processing method of this band disinfection by ultraviolet light comprises the following steps:
Utilize pipeline to collect sanitary wastewater, remove bulky grain float in sewage by grid pond.
A, pretreatment: inserted by sewage in decomposing pool 8, utilize Unareobic fermentation to process sewage；The preliminary float removed in sewage and Organic substance make the index of float and bod in sewage respectively reach 40%～50% and 20%～30%.SS (SuspendedSubstance after processing preferably past step a in the present embodiment, float in water quality) reach 45%, preferably 45%, BOD (BiochemicalOxygenDemand, Biochemical oxygen demand or bod, represent a comprehensive instruction of the aerobic pollution matter content such as Organic substance in water) index reaches 25%.
B, Aerobic Process for Treatment: will insert in Aeration tank 9 through the step a sewage processed, utilize aeration means to make air and sewage be fully contacted；
C, membrane module process: process in pond 10 by inserting membrane module through the step b sewage processed, utilize film-bioreactor 11 float in sewage to be filtered to retain, and the Organic substance in sewage and oxidizable substance are degraded or oxidation Decomposition, reduce the bod in sewage and biochemical oxygen demand figureofmerit；Film-bioreactor 11 is utilized to retain the float of 90%-95% in sewage.The clearance being preferably SS (SuspendedSubstance, the float in water quality) in the present embodiment reaches 95%, thus meeting sewage disposal discharge standard.
D, sterilization discharge: utilize the sewage sucking-off that self priming pump 5 will process through step c, and enter quartz burner 15 and sterilize, discharge after reaching discharge standard；The ultraviolet light that quartz burner 15 sends is C ray, and wavelength is 240nm～260nm；In the present embodiment, optimal wavelength is the ultraviolet of 253.7nm.
Adopt MBR (MembraneBio-Reactor, film-bioreactor 11 is as sewage disposal purification membrane assembly, sewage enters district's decomposing pool 8 pretreatment, Unareobic fermentation is utilized to process sewage, under the effect of anaerobe, to biodegradable high-concentration sewage through anaerobic fermentation, major part Organic substance is degraded, make Preliminary sewage purify, the process of degradation of organic substances constantly produces mud.Then sewage enters in two district's Aeration tanks 9, air and sewage is made strongly to be fully contacted through aeration structure 12, its object is to be dissolved in sewage by the oxygen in air, gas unwanted in sewage and volatile material are banished in air, promote mass exchange between gas and liquid, thus further Aerobic Process for Treatment, the purpose that aeration structure 12 can also be sufficiently mixed by making water movement reach and stir, oxygen in air is delivered in sewage by aeration and contacts with Organic substance or oxidizable substance, reduce COD and the BOD (COD:ChemicalOxygenDemand in sewage, utilize chemical oxidizing agent by oxidizable substance oxidation Decomposition in water, the gauge of the oxidant according to residual calculates the consumption of oxygen；BOD:BiochemicalOxygenDemand, Biochemical oxygen demand or bod, represent a comprehensive instruction of the aerobic pollution matter content such as Organic substance in water) index.Then sewage enters back into three district membrane modules and processes ponds 10 and process via film-bioreactor 11, retain the Organic substance in float and degradation of sewage and oxidizable substance, then passing through self priming pump 5 utilizes outlet conduit 13 that the sewage after processing is sucked out and entered quartz burner 15 and carries out disinfection, last qualified discharge.
The present embodiment middle-ultraviolet lamp sterilization UV lamp sends the ultraviolet of wavelength 253.7nm, and ultraviolet germicidal lamp just can kill bacterial virus within several seconds time, and germicidal efficiency is up to 99%.This ultraviolet makes to form thymine dimer in antibacterial and the protein generation degeneration dissociation of virus, nucleic acid, thus destroying DNA and the RNA structure of various virus and antibacterial, kills the inextinguishable antibacterial of other sterilization methods；The UV photons of each wavelength 253.7nm has the energy of 4.9eV.When ultraviolet radiation to microorganism, transmission and the accumulation of energy just occurring, accumulation result causes bacteria inactivation rate, thus reaching the purpose of sterilization.Working as antibacterial, virus adsorption is more than 3600～65000uW/cm2During metering, antibacterial, viral deoxyribose nucleic acid (DNA) and ribonucleic (RNA) are had powerful destructive power, antibacterial, virus can be made to lose viability and reproductive capacity and then eliminating bacteria, virus, reach sterilization effect.Ultraviolet can make nucleic acid mutation on the one hand, hinders it to replicate, and transcribes the synthesis of block and protein；Produce free radical on the one hand and can cause photo-ionisation, thus causing the death of cell.
The membrane technology medical waste water processing method with disinfection by ultraviolet light in the present embodiment is preferred for medical waste water and processes, and the sewage standard after process adopts the regulation of " medical waste water discharge standard " (GB/T18466-2005).
As shown in Figures 2 and 3, in the present embodiment, the membrane technology medical waste water with disinfection by ultraviolet light processes the tank body 1 that device includes having cavity 2, the water inlet 3 of connection cavity 2 is offered on the upside of tank body 1, decomposing pool 8, Aeration tank 9 and membrane module process pond 10 that the cavity 2 of tank body 1 is divided into by dividing plate 1 straight up and dividing plate 27, dividing plate 1 and dividing plate 27 it is interval with successively in tank body 1；The upper surface of dividing plate 1 and dividing plate 27 all and has gap between the upper inside walls of tank body 1, water inlet 3 above decomposing pool 8 and between decomposing pool 8 with Aeration tank 9, Aeration tank 9 and membrane module process and are all connected between pond 10, aeration structure 12 it is provided with in Aeration tank 9, membrane module processes in pond 10 and is provided with film-bioreactor 11, membrane module processes in pond 10 and is connected to outlet conduit 13, and the membrane technology medical waste water with disinfection by ultraviolet light processes the quartz burner 15 that device also includes can the liquid in outlet conduit 13 being carried out disinfection.
The sanitary wastewater collected is connected with the water inlet 3 on this tank body 1 through piping, sewage is flushed to bottom decomposing pool 8 after entering from top to bottom from water inlet 3 under gravity, at decomposing pool 8 through preliminary sedimentation and decomposition, processing procedure reaches a certain amount of after automatically cover dividing plate 1, enter next process, air and sewage is made strongly to be fully contacted through aeration structure 12 in Aeration tank 9, its object is to be dissolved in sewage by the oxygen in air, gas unwanted in sewage and volatile material are banished in air, promote mass exchange between gas and liquid, thus further Aerobic Process for Treatment；Then process in pond 10 again through the gap between dividing plate 27 and tank body 1 upper inside walls to membrane module, membrane module processes to cultivate in pond 10 substantial amounts of domestication antibacterial, double oxygen, aerobic microbiological metabolism under, each pollutant in sewage is removed, " solid-liquid separation " can be accomplished completely by the filtration of film, thus it is extremely low to ensure that delivery turbidity is down to, each pollutant in sewage is further removed also by the filtration of film.Sewage adopts ultraviolet sterilization again after film-bioreactor 11 processes, the ultraviolet that quartz burner 15 is launched can make protein generation degeneration dissociate, nucleic acid is formed thymine dimer, destroy DNA and the RNA structure of various virus and antibacterial, cause antibacterial and the death of virus, additionally it is possible to kill the antibacterial that other sterilization methods can not sterilize；The ultraviolet that this quartz burner 15 is launched just can kill bacterial virus within several seconds time, and germicidal efficiency is up to 99%.Eventually passing outlet conduit 13 and discharge the good water of water quality, the Recovery Purifying completing sewage utilizes.The membrane technology medical waste water process apparatus structure of this band disinfection by ultraviolet light is compact, and floor space is little, and the mud of generation is few, and sewage treating efficiency is high, and Effects of Water Quality is good.
As shown in Figures 2 and 3, membrane technology medical waste water with disinfection by ultraviolet light processes device and also includes outlet 4, quartz burner 15 is arranged on above tank body 1, outlet conduit 13 is provided with self priming pump 5, one end of outlet conduit 13 is arranged on film-bioreactor 11 side, and outlet conduit 13 is connected through ultraviolet radiation region and outlet conduit 13 other end of quartz burner 15 with outlet 4；Aeration structure 12 includes the blower fan 121 being arranged on above tank body 1, and Aeration tank 9 is provided with some diffusion discs 122 with aperture of giving vent to anger near bottom interval, and the aperture of giving vent to anger of diffusion disc 122 is connected by breather line 1 with blower fan 121.Diffusion disc 122 in the technical program includes the coniform blade that escape pipe upper end is arranged, and coniform blade is offered some apertures of giving vent to anger, and aperture of giving vent to anger is connected with escape pipe, and escape pipe lower end breather line 1 is connected；Blower fan 121 is also associated with breather line 2 14, the gas outlet of breather line 2 14 is positioned at film-bioreactor 11 place, blower fan 121 is by 2 14 pairs of film-bioreactor 11 place ventilations of breather line, thus the film silk of film-bioreactor 11 is washed away, shakes, and prevent pollution and the blocking of film-bioreactor 11, the dissolved oxygen simultaneously produced just are used for the oxidation of part small organic molecule and maintain the dissolved oxygen value of water outlet.
Processing in pond 10 at membrane module, organic degraded completes under facultative anaerobic bacterium effect mainly by the mud forming higher concentration；Macromole organic pollution is gradually degraded as small organic molecule, and final oxidation Decomposition is CO2、H2The inorganic substances that O etc. are stable, owing to the generation of facultative anaerobe does not need the guarantee of dissolved oxygen, so reducing power consumption.Film-bioreactor 11 is while realizing waste water treating and reutilizing, it is achieved that the significantly decrement of organic sludge, it may be achieved substantially without organic residual mud discharging, successfully solves excess sludge disposal difficulties.
Newly-increased Organic substance is broken down into small organic molecule in the effect next part of facultative anaerobe, then oxidized is decomposed into CO2、H2The inorganic matters such as O；Another part is synthesized into cell.When low sludge loading, this cell is broken down into again small organic molecule as nutrient in facultative anaerobe effect next part, then oxidized is again decomposed into CO2、H2The inorganic matters such as O；Another part is synthesized into again new cell.The rest may be inferred, and when low sludge loading, this new cell is again as nutrient, and under the effect of facultative anaerobe, continuation is made to decompose and the metabolism of synthesis, until cell finally whole metabolism are CO2、H2The inorganic matters such as O.
When cell newly-increased in system is equal to metabolic rate, organic sludge zero growth rate.The applicant is monitored out when mud autodigestion reaches dynamic equilibrium with propagation by long-term experiment, and intrasystem sludge loading maintains essentially in 0.072kg (COD)/kg (MLSS d).Water inlet organic contamination substrate concentration is high, and newly-increased cell is many, and metabolic rate is high, and MLVSS raises；Otherwise, water inlet organic contamination substrate concentration is low, and newly-increased cell is few, and metabolic rate is low, and MLVSS reduces.Owing to antibacterial can be retained down by film-bioreactor 11, sludge concentration can fluctuate with influent concentration in relatively wide scope, guarantee that system can be run under 0.072kg (COD)/this sludge loading of kg (MLSS d), it is achieved organic residual mud near-zero release.And by the operation of not sludge discharge way, it is possible to maintain longer sludge age, it is suppressed that hyphomycetic propagation, solve the sludge bulking problem in not spoil disposal situation.
Sewage dephosphorization technology mainly has chemical dephosphorization and biological phosphate-eliminating, and chemical dephosphorization dosing is big, and the chemical sludge of generation is many, and operating cost is high；Biological phosphate-eliminating need to be realized by spoil disposal, there is excess sludge and processes a difficult problem, and the technical program utilizes film-bioreactor 11 that organic sludge is decomposed, and solves this difficult problem.
Also adopting oxygen biogasification dephosphorization process of holding concurrently in the technical program, the reaction mechanism of Anammox is: under certain condition, and Nitrification produces substantial amounts of NO2-Accumulation, anaerobic ammonia oxidizing bacteria is first by NO2-Change into NH2OH, then with NH2OH is that electron acceptor is by NH4+Oxidation generates N2H4；N2H4Change into N2, and be NO2-It is reduced into NH2OH provides electronics, has a small amount of NO in experiment2-It is oxidized to NO2-.Owing to achieving short distance nitration, Anammox effect, decrease oxygen supply, aeration energy consumption and denitrification needed for carbon source is greatly reduced, it is achieved thereby that efficient denitrification purpose.On the implementation, not only to optimize nutritional condition and environmental condition, promote the growth of anaerobic ammonia oxidizing bacteria, to manage improve the settling property of thalline and improve the structure of reactor simultaneously, promote function bacterium effectively to hold and stay.
The chemical reaction that Anammox relates to is:
NH2OH+NH3→N2H4+H2O；
N2H4→N2+ 4 [H]；
HNO2+4[H]→NH2OH+H2O。
In use, film can be subject to certain pollution to the membrane module of film-bioreactor 11, for ensureing the normal operation of film, also sets up backwash process or preparation medicament soaking and washing in integration MBR equipment in the present embodiment.
Specific embodiment described herein is only to present invention spirit explanation for example.Described specific embodiment can be made various amendment or supplements or adopt similar mode to substitute by those skilled in the art, but without departing from the spirit of the present invention or surmount the scope that appended claims is defined.
Claims (3)
1. the membrane technology medical waste water with disinfection by ultraviolet light processes device, it is characterized in that, the described membrane technology medical waste water with disinfection by ultraviolet light processes the tank body (1) that device includes having cavity (2), described tank body (1) upside offers the water inlet (3) of connection cavity (2), described cavity includes decomposing pool spaced apart from each other (8), Aeration tank (9) and membrane module process pond (10), described water inlet (3) is positioned at described decomposing pool (8) top and between described decomposing pool (8) and Aeration tank (9), described Aeration tank (9) processes with described membrane module and is all connected between pond (10), aeration structure (12) it is provided with in described Aeration tank (9), described aeration structure (12) includes blower fan (121) and breather line one (123)；Described membrane module processes in pond (10) and is provided with film-bioreactor (11), described membrane module processes and is connected to outlet conduit (13) in pond (10), and the described membrane technology medical waste water with disinfection by ultraviolet light processes the quartz burner (15) that device also includes can the liquid in outlet conduit (13) being carried out disinfection；
It is interval with dividing plate one (6) straight up and dividing plate two (7), described dividing plate one (6) and dividing plate two (7) in described tank body (1) successively the cavity (2) of described tank body (1) is divided into described decomposing pool (8), Aeration tank (9) and membrane module to process pond (10)；The upper surface of described dividing plate one (6) and dividing plate two (7) all and has gap between the upper inside walls of described tank body (1)；
Described Aeration tank is provided with multiple diffusion disc with aperture of giving vent to anger near bottom interval, described diffusion disc includes the coniform blade that escape pipe upper end is arranged, offering multiple aperture of giving vent to anger on coniform blade, aperture of giving vent to anger is connected with escape pipe, and escape pipe lower end is connected with breather line one；
Described blower fan (121) is also associated with breather line two (14), the gas outlet of described breather line two (14) is positioned at described film-bioreactor (11) place, film-bioreactor (11) place is ventilated by blower fan (121) by breather line two (14), thus the film silk of film-bioreactor (11) is washed away, shakes, and prevent pollution and the blocking of film-bioreactor (11), the dissolved oxygen simultaneously produced just are used for the oxidation of part small organic molecule and maintain the dissolved oxygen value of water outlet.
2. a kind of membrane technology medical waste water with disinfection by ultraviolet light according to claim 1 processes device, it is characterized in that, the described membrane technology medical waste water with disinfection by ultraviolet light processes device and also includes outlet (4), described quartz burner (15) is arranged on described tank body (1) top, described outlet conduit (13) is provided with self priming pump (5), one end of described outlet conduit (13) is arranged on described film-bioreactor (11) side, described outlet conduit (13) is connected through ultraviolet radiation region and described outlet conduit (13) other end of described quartz burner (15) with described outlet (4).
3. a kind of membrane technology medical waste water with disinfection by ultraviolet light according to claim 2 processes device, it is characterised in that described blower fan (121) is arranged at the top of described tank body (1).
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| CN107043199B (en) * | 2017-05-05 | 2020-07-17 | 河南恒安环保科技有限公司 | Hospital wastewater treatment and resource recovery method |
| CN113461262A (en) * | 2021-07-06 | 2021-10-01 | 深圳信息职业技术学院 | Ultraviolet ray disinfection water treatment system with automatic ultraviolet irradiance adjusting function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241456A (en) * | 2010-05-11 | 2011-11-16 | 朴显泽 | Hospital waste water treatment system |
| CN102838258A (en) * | 2012-09-14 | 2012-12-26 | 大连格兰清水环境工程有限公司 | Recyclable medical wastewater treatment method |
| CN103819062A (en) * | 2014-03-17 | 2014-05-28 | 成都太古科技有限公司 | MBR (membrane biological reactor) sewage treatment equipment for integrated fluidizing pool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8202432B2 (en) * | 2009-06-24 | 2012-06-19 | King Abdulaziz University | Wastewater treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241456A (en) * | 2010-05-11 | 2011-11-16 | 朴显泽 | Hospital waste water treatment system |
| CN102838258A (en) * | 2012-09-14 | 2012-12-26 | 大连格兰清水环境工程有限公司 | Recyclable medical wastewater treatment method |
| CN103819062A (en) * | 2014-03-17 | 2014-05-28 | 成都太古科技有限公司 | MBR (membrane biological reactor) sewage treatment equipment for integrated fluidizing pool |
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