CN104944707B - Hospital sewage treatment MBR process - Google Patents
Hospital sewage treatment MBR process Download PDFInfo
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- CN104944707B CN104944707B CN201510359971.XA CN201510359971A CN104944707B CN 104944707 B CN104944707 B CN 104944707B CN 201510359971 A CN201510359971 A CN 201510359971A CN 104944707 B CN104944707 B CN 104944707B
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Abstract
The invention relates to a hospital sewage treatment MBR process. The process includes the following treatment steps that 1, hospital sewage enters the water inlet of the upper portion of a box body of a sewage treatment box, and solid and liquid separation is achieved after the sewage is filtered through a filtering grating; 2, liquid sewage enters a hydrolysis acidification pool, and hydrolysis acid producing bacteria are placed in the hydrolysis acidification pool; 3, acidified sewage flows into an anaerobic digester and enters an aerobic tank; 4, a sludge and water mixture obtained in the step 3 is further treated and enters an MBR membrane pool connected with the bottom of the aerobic tank. By means of the technical scheme, the occupied area is small; the MBR membrane sewage treatment process and the traditional activated sludge process are combined, and the outlet water quality is good and stable and is not influenced by MBR membrane quality and water source problems. The outlet water quality is stable, and no sludge expansion is produced. Operation is easy, construction is convenient, and no special maintenance is needed.
Description
Technical field
The present invention relates to a kind of Hospital Sewage Treatment MBR technique, belongs to Progress in Technology of Hospital Wastewater Treatment field.
Background technology
Medical waste water is originated and composition is sufficiently complex, dirty containing a large amount of pathogenic microbes, poisonous, harmful physical chemistry
Dye thing, with features such as space-pollution, acute infection, latent infections, if can become without directly discharge is effectively processed
The important channel of one epidemic disease diffusion.At present, large hospital has certain Waste Water Treatment, but the hospital wastewater of small scale
Process aspect is just relatively weak, so seeking a kind of cheap, simple to operate to kill in sewage microorganism and improve water quality
Method just seems very necessary.
In sewage disposal, water resource recycles field, and MBR is also known as membrane bioreactor (Membrane Bio-
Reactor), it is a kind of new water technology by film separation unit in combination with biological processing unit.Using membrane structure
Type is mainly Flat Membrane and hollow-fibre membrane, and by membrane aperture hyperfiltration technique can be divided into.
Hospital is that the articles for daily use and Excreta of patient carry substantial amounts of antibacterial, virus, funguses where patient concentrates
And other pollutant, it is susceptible to pathophoresiss and pollution environment event.If the infectiousness sewage that patient is produced and treatment
The sewage of generation is directly discharged in city planting ductwork carries out conventional sewage process, and the pollutant with infectiousness pathogenic bacteria (are carried thin
Bacterium, virus, the pollutant of funguses) effective sterilizing can not be obtained, it is that transmission of disease brings hidden danger.
At present, have in prior art and be not also specifically designed for the sewage disposal system that medical field sewage is purified.Cause
How this, processed medical field sewage to reduce the propagation of pathogenic bacteria, becomes those skilled in the art urgently to be resolved hurrily
Problem.
The content of the invention
It is an object of the invention to provide a kind of Hospital Sewage Treatment MBR technique, so as to using suitable mode preferably
Improve Hospital Sewage Treatment effect, it is convenient to use as needed, improve Hospital Sewage Treatment effect.
To achieve these goals, technical scheme is as follows.
A kind of Hospital Sewage Treatment MBR technique, its process step is as follows：
(1) hospital sewage is entered from the water inlet on the casing top of waste water treatment box, and is filtered by filtering grid
Afterwards, solid-liquid separation is realized, solid matter stays in filtration grid top, and the water of liquid enters into filtering grid and from lower box
Outlet is flowed in the hydrolysis acidification pool being connected with tank outlet；
(2) liquid sewage enters hydrolysis acidification pool, and hydrolysis acid-producing bacteria is placed with hydrolysis acidification pool, by liquid sewage not
Soluble organism is hydrolyzed into dissolved organic matter, makes larger molecular organics matter resolve into small molecule organic material, convenient subsequently to enter
Row is processed；
(3) sewage after acidification is flowed in anaerobic pond, and enters into Aerobic Pond, then again goes into anaerobism
Chi Zhong, in again going into Aerobic Pond so that waste water realizes denitrogenation, dephosphorization in anoxia, the environment of oxygen-enriched cyclical-transformation
With thorough degradation of organic substances, wherein, denitrogenation is that organic nitrogen is converted into into ammonia nitrogen, by the effect of aerobic microbiological nitrifier by ammonia nitrogen
Nitrite nitrogen, nitrate nitrogen are converted into, then nitrite nitrogen, nitrate nitrogen are converted into by nitrogen by anaerobe denitrifying bacterium, from
Escape in sewage, reach the purpose of denitrogenation；Dephosphorization is that phosphorus is released in anaerobic environment using polyP bacteria, and excessive in oxygen enriched environment
The characteristic of phosphorus is inhaled, the sludge of high phosphorus content is formed, the purpose of dephosphorization is reached；Thoroughly degradation of organic substances is in the base in hydrolysis acidification
On plinth, using the characteristic of quick breeding in aerobic microbiological oxygen enriched environment, anaerobe quick breeding in anaerobic environment
Characteristic, by turns degradation of organic substances, forms sludge aqueous mixtures；
(4) further process for the sludge aqueous mixtures in previous step, enter the MBR being connected with Aerobic Pond bottom
In membrane cisterna, control valve is provided between Aerobic Pond outlet and MBR membrane cisterna imports, opens sludge water after valve and enter into MBR films
Chi Zhong, wherein, MBR membrane cisternas top is provided with filter, and sludge is separated into filter, and is entered in drying processor
Process is dried, and is reclaimed after disinfection；Aqueous water is entered on MBR membrane cisternas, is carried out at filtration again
Reason, the water after being filtered adopts in-situ chemical cleaning method for MBR membrane modules, realizes Hospital Sewage Treatment.
Further, in step (4), using the front membrane cisterna for MBR in hydrophilic process is carried out to membrane module, will be hydrophilic
Directly from outlet addition after dilution agent；Then each membrane module is fixed membrane module using hydrophilizing agent concentrated solution 100mL or so
In Aeration tank, by membrane module and the perpendicular stable placement of bottom of pond；Pipe laying and valve, and be connected with blower fan and water pump；Inspection
Whether normal survey running parameter after MBR sewage disposal systems are installed；Add after water, activated carbon and activated sludge are mixed in proportion
In Aeration tank；With sequential come acclimated activated sludge；Start MBR operation of sewage disposal system；Judge the water level of MBR water tanks, work as MBR
When the water level of water tank attains to a high place, system worked well enters controlling the water circulation flow process；When the water level of MBR water tanks reaches lowest order, go out
Water pump stops water outlet, and aerator works on, and when water pump continuous anhydrous entrance in Preset Time is gone out, then aerator enters dormancy
State；When water tank recovers water inlet to certain water level, aerator restarts work, and to peak level, water pump reopens water outlet；
Periodically start backpurge system, it is specific as follows：The water of recoil flows to membrane module through cartridge filter；The operating pressure control of recoil
System is in preset pressure threshold value；Recoil time is default recoil time threshold value.
Further, in step (4), the in-situ chemical cleaning method of MBR membrane modules specifically includes following steps：First
Whether the attenuation for judging the saturating rate of water reaches the 16～18% of initial value, if it is, carrying out situ cleaning according to the following steps：1)
Cleanout fluid is prepared, will be standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid；2) stop aeration, stop water inlet,
When being reduced to water level 0.8～1.2 rice noodle nearby safety level or water pump can be automatically switched off, outlet valve is closed, open abluent
Liquid feeding valve, abluent is allowed to flow under the influence of gravity into the inner chamber of membrane module；3) add after cleanout fluid, close liquid feeding valve, place
About 1.8～2.2 hours, then aeration was overnight；4) all flowing water Valves are opened, starts and water pump；Water outlet is entered in regulating reservoir,
Row discharge again after waiting effluent quality is normal.
The beneficial effect of the invention is：Due to adopting above-mentioned technical proposal, floor space is little, MBR film sewage disposal works
Skill and conventional activated sludge process combine, and effluent quality is good, stable, is not affected by MBR film qualities and water resources problem.Water outlet water
Matter is stablized, and will not produce sludge bulking.It is simple to operate, easy construction, without the need for special maintenance.
Specific embodiment
The specific embodiment of the present invention is described with reference to embodiment, to be better understood from the present invention.
Embodiment
Hospital Sewage Treatment MBR technique in the present embodiment, its process step is as follows：
(1) hospital sewage is entered from the water inlet on the casing top of waste water treatment box, and is filtered by filtering grid
Afterwards, solid-liquid separation is realized, solid matter stays in filtration grid top, and the water of liquid enters into filtering grid and from lower box
Outlet is flowed in the hydrolysis acidification pool being connected with tank outlet；
(2) liquid sewage enters hydrolysis acidification pool, and hydrolysis acid-producing bacteria is placed with hydrolysis acidification pool, by liquid sewage not
Soluble organism is hydrolyzed into dissolved organic matter, makes larger molecular organics matter resolve into small molecule organic material, convenient subsequently to enter
Row is processed；
(3) sewage after acidification is flowed in anaerobic pond, and enters into Aerobic Pond, then again goes into anaerobism
Chi Zhong, in again going into Aerobic Pond so that waste water realizes denitrogenation, dephosphorization in anoxia, the environment of oxygen-enriched cyclical-transformation
With thorough degradation of organic substances, wherein, denitrogenation is that organic nitrogen is converted into into ammonia nitrogen, by the effect of aerobic microbiological nitrifier by ammonia nitrogen
Nitrite nitrogen, nitrate nitrogen are converted into, then nitrite nitrogen, nitrate nitrogen are converted into by nitrogen by anaerobe denitrifying bacterium, from
Escape in sewage, reach the purpose of denitrogenation；Dephosphorization is that phosphorus is released in anaerobic environment using polyP bacteria, and excessive in oxygen enriched environment
The characteristic of phosphorus is inhaled, the sludge of high phosphorus content is formed, the purpose of dephosphorization is reached；Thoroughly degradation of organic substances is in the base in hydrolysis acidification
On plinth, using the characteristic of quick breeding in aerobic microbiological oxygen enriched environment, anaerobe quick breeding in anaerobic environment
Characteristic, by turns degradation of organic substances, forms sludge aqueous mixtures；
(4) further process for the sludge aqueous mixtures in previous step, enter the MBR being connected with Aerobic Pond bottom
In membrane cisterna, control valve is provided between Aerobic Pond outlet and MBR membrane cisterna imports, opens sludge water after valve and enter into MBR films
Chi Zhong, wherein, MBR membrane cisternas top is provided with filter, and sludge is separated into filter, and is entered in drying processor
Process is dried, and is reclaimed after disinfection；Aqueous water is entered on MBR membrane cisternas, is carried out at filtration again
Reason, the water after being filtered adopts in-situ chemical cleaning method for MBR membrane modules, realizes Hospital Sewage Treatment.
In step (4), using the front membrane cisterna for MBR in hydrophilic process is carried out to membrane module, after hydrophilic dilution agent
Directly add from outlet；Then membrane module is fixed on Aeration tank by each membrane module using hydrophilizing agent concentrated solution 100mL or so
In, by membrane module and the perpendicular stable placement of bottom of pond；Pipe laying and valve, and be connected with blower fan and water pump；Detection MBR sewage
Whether running parameter is normal after processing system is installed；Add in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；
With sequential come acclimated activated sludge；Start MBR operation of sewage disposal system；The water level of MBR water tanks is judged, when the water of MBR water tanks
When position attains to a high place, system worked well enters controlling the water circulation flow process；When the water level of MBR water tanks reaches lowest order, go out water pump stopping
Water outlet, aerator works on, and when water pump continuous anhydrous entrance in Preset Time is gone out, then aerator enters resting state；When
Water tank recovers water inlet to certain water level, and aerator restarts work, and to peak level, water pump reopens water outlet；Periodically open
Dynamic backpurge system, it is specific as follows：The water of recoil flows to membrane module through cartridge filter；The operating pressure of recoil is controlled pre-
If pressure threshold；Recoil time is default recoil time threshold value.
In step (4), the in-situ chemical cleaning method of MBR membrane modules specifically includes following steps：First determine whether the saturating rate of water
Attenuation whether reach the 16～18% of initial value, if it is, carrying out situ cleaning according to the following steps：1) cleaning is prepared
Liquid, will be standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid；2) stop aeration, stop water inlet, water level is dropped
When safety level or water pump can be automatically switched off near as little as 0.8～1.2 rice noodle, closing outlet valve, unlatching abluent liquid feeding valve,
Abluent is allowed to flow under the influence of gravity into the inner chamber of membrane module；3) add after cleanout fluid, close liquid feeding valve, place about 1.8～2.2
Hour, then aeration is overnight；4) all flowing water Valves are opened, starts and water pump；Water outlet is entered in regulating reservoir, water outlet water is waited
Row discharge again after matter is normal.
The above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (1)
1. a kind of Hospital Sewage Treatment MBR technique, it is characterised in that：Process step is as follows：
(1) hospital sewage is entered from the water inlet on the casing top of waste water treatment box, and after filtering grid is filtered, it is real
Existing solid-liquid separation, solid matter stays in filtration grid top, and the water of liquid enters into filtering grid and from the outlet of lower box
In being flowed into the hydrolysis acidification pool being connected with tank outlet；
(2) liquid sewage enters hydrolysis acidification pool, and hydrolysis acid-producing bacteria is placed with hydrolysis acidification pool, will be insoluble in liquid sewage
Hydrolysis of organic matter makes larger molecular organics matter resolve into small molecule organic material into dissolved organic matter, convenient subsequently to be located
Reason；
(3) sewage after acidification is flowed in anaerobic pond, and enters into Aerobic Pond, then again goes into anaerobic pond
In, in again going into Aerobic Pond so that waste water in anoxia, the environment of oxygen-enriched cyclical-transformation, realize denitrogenation, dephosphorization and
Thorough degradation of organic substances, wherein, denitrogenation is that organic nitrogen is converted into into ammonia nitrogen, is turned ammonia nitrogen by the effect of aerobic microbiological nitrifier
Nitrite nitrogen, nitrate nitrogen are turned to, then nitrite nitrogen, nitrate nitrogen are converted into by nitrogen by anaerobe denitrifying bacterium, from dirt
Escape in water, reach the purpose of denitrogenation；Dephosphorization is that phosphorus is released in anaerobic environment using polyP bacteria, and is excessively inhaled in oxygen enriched environment
The characteristic of phosphorus, forms the sludge of high phosphorus content, reaches the purpose of dephosphorization；Thoroughly degradation of organic substances is on the basis of hydrolysis acidification
On, using the characteristic of quick breeding in aerobic microbiological oxygen enriched environment, the spy of anaerobe quick breeding in anaerobic environment
Property, by turns degradation of organic substances, forms sludge aqueous mixtures；
(4) further process for the sludge aqueous mixtures in previous step, enter the MBR membrane cisternas being connected with Aerobic Pond bottom
In, control valve is provided between Aerobic Pond outlet and MBR membrane cisterna imports, open sludge water after valve and enter in MBR membrane cisternas,
Wherein, MBR membrane cisternas top is provided with filter, and sludge is separated into filter, and enters in drying processor and carry out
Reclaimed after dried, and disinfection；Aqueous water is entered on MBR membrane cisternas, carries out filtration treatment again, is obtained
Water after must filtering, for MBR membrane modules in-situ chemical cleaning method is adopted, and realizes Hospital Sewage Treatment；
In the step (4), using the front membrane cisterna for MBR in hydrophilic process is carried out to membrane module, after hydrophilic dilution agent
Directly add from outlet；Then membrane module is fixed on Aeration tank by each membrane module using hydrophilizing agent concentrated solution 100mL or so
In, by membrane module and the perpendicular stable placement of bottom of pond；Pipe laying and valve, and be connected with blower fan and water pump；Detection MBR sewage
Whether running parameter is normal after processing system is installed；Add in Aeration tank after water, activated carbon and activated sludge are mixed in proportion；
With sequential come acclimated activated sludge；Start MBR operation of sewage disposal system；The water level of MBR water tanks is judged, when the water of MBR water tanks
When position attains to a high place, system worked well enters controlling the water circulation flow process；When the water level of MBR water tanks reaches lowest order, go out water pump stopping
Water outlet, aerator works on, and when water pump continuous anhydrous entrance in Preset Time is gone out, then aerator enters resting state；When
Water tank recovers water inlet to certain water level, and aerator restarts work, and to peak level, water pump reopens water outlet；Periodically open
Dynamic backpurge system, it is specific as follows：The water of recoil flows to membrane module through cartridge filter；The operating pressure of recoil is controlled pre-
If pressure threshold；Recoil time is default recoil time threshold value；
In the step (4), the in-situ chemical cleaning method of MBR membrane modules specifically includes following steps：First determine whether the saturating rate of water
Attenuation whether reach the 16～18% of initial value, if it is, carrying out situ cleaning according to the following steps：1) cleaning is prepared
Liquid, will be standby after cleaning solution dilution, each membrane module adapted 200mL cleanout fluid；2) stop aeration, stop water inlet, water level is dropped
When safety level or water pump can be automatically switched off near as little as 0.8～1.2 rice noodle, closing outlet valve, unlatching abluent liquid feeding valve,
Abluent is allowed to flow under the influence of gravity into the inner chamber of membrane module；3) add after cleanout fluid, close liquid feeding valve, place about 1.8～2.2
Hour, then aeration is overnight；4) all flowing water Valves are opened, starts and water pump；Water outlet is entered in regulating reservoir, water outlet water is waited
Row discharge again after matter is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359971.XA CN104944707B (en) | 2015-06-26 | 2015-06-26 | Hospital sewage treatment MBR process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510359971.XA CN104944707B (en) | 2015-06-26 | 2015-06-26 | Hospital sewage treatment MBR process |
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| CN104944707A CN104944707A (en) | 2015-09-30 |
| CN104944707B true CN104944707B (en) | 2017-04-26 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105712572A (en) * | 2015-12-04 | 2016-06-29 | 韩山师范学院 | Method for treating preserved fruit wastewater on basis of membrane integration technologies |
| CN108503123A (en) * | 2017-02-25 | 2018-09-07 | 新乡市新能环保工程有限公司 | Industrial water drainage treatment process containing high concentration organic contaminant |
| 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 |
| CN108793595A (en) * | 2018-06-14 | 2018-11-13 | 濮阳职业技术学院 | A kind of process for treating industrial waste water |
| CN108862825A (en) * | 2018-06-14 | 2018-11-23 | 安徽中然环保科技有限公司 | A kind of Hospital Sewage Treatment recycling technique |
| CN109650658B (en) * | 2019-01-09 | 2024-08-20 | 青岛亚通达铁路设备有限公司 | Vacuum sewage biodegradation sewage box device for train and sewage treatment method |
| CN110342759A (en) * | 2019-08-16 | 2019-10-18 | 江苏沛尔膜业股份有限公司 | A kind of medical wash water Intelligent purifying reuse treatment process |
| CN114644394A (en) * | 2021-04-22 | 2022-06-21 | 苏州吉如发环保科技有限公司 | Reciprocating motion's MBR membrane system, sewage treatment system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102241456A (en) * | 2010-05-11 | 2011-11-16 | 朴显泽 | Hospital waste water treatment system |
| CN201785292U (en) * | 2010-08-31 | 2011-04-06 | 四川省科学城中心科技有限公司 | Hospital sewage treatment system based on MBR |
| CN103288301B (en) * | 2013-06-26 | 2014-07-09 | 中国水电顾问集团中南勘测设计研究院 | A system and a method for the treatment of hospital sewage through the combination of biological contact oxidation and MBR membrane |
| CN103663860B (en) * | 2013-10-30 | 2015-04-08 | 郭强 | Treatment method of high-concentration wastewater |
| CN203683315U (en) * | 2013-12-09 | 2014-07-02 | 天津聚雅源科技有限公司 | Membrane technology and inclined plate sedimentation integrated medical waste treatment system |
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