CN103288301A - A system and a method for the treatment of hospital sewage through the combination of biological contact oxidation and MBR membrane - Google Patents
A system and a method for the treatment of hospital sewage through the combination of biological contact oxidation and MBR membrane Download PDFInfo
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- CN103288301A CN103288301A CN2013102557301A CN201310255730A CN103288301A CN 103288301 A CN103288301 A CN 103288301A CN 2013102557301 A CN2013102557301 A CN 2013102557301A CN 201310255730 A CN201310255730 A CN 201310255730A CN 103288301 A CN103288301 A CN 103288301A
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Abstract
The present invention discloses a system and a method for the treatment of hospital sewage through the combination of biological contact oxidation and MBR membrane. The system for the treatment of hospital sewage comprises a grating well, an anaerobic sedimentation tank, a biological contact oxidation pond, an MBR tank, and a disinfection contact tank which are successively connected in series. The water inlet end of the grating well is provided with a water inlet pipe; a sludge pump sludge inlet pipe connected with the sludge pump is respectively arranged on the anaerobic sedimentation tank, the biological contact oxidation pond, and the MBR tank; an aerating unit is arranged respectively at the bottom of the biological contact oxidation pond and the MBR tank, and the aerating units are connected with an air blower through pipes; a composite filler is disposed in the biological contact oxidation pond over the aerating unit thereof; and MBR membrane modules are arranged in the MBR tank over the aerating unit thereof. The whole sewage treatment station of the invention is highly integrated in design, covers a small area, needs no building, runs in closed environment, and has no pollutions of noise and odor; and water after treatment meets reclaimed water standards, and can be used for plants, toilets, landscapes, etc.
Description
Technical field
The present invention relates to the Hospital Sewage Treatment field, refer in particular to bio-contact oxidation and MBR film coupling technique and handle the system of hospital sewage and the method for sewage disposal.
Background technology
Hospital sewage is made up of the sewage of testing place dischargings such as chamber, dining room, bathroom, toilet, reagent chamber, laundry from inpatient department, ambulatorium, reality (change).Hospital sewage contains a large amount of germs, virus, parasitic ovum and grease albumen, carbohydrate and washing composition.Make the composite wastewater composition intricate, pollution level is big, and intractability is higher.
China just handled hospital sewage since the later stage sixties in last century, and the technology of employing is fairly simple, as: traditional septic tank+lime treatment, septic tank+add sterilizing agent etc.Since the eighties, entered water drain after a small amount of hospital carries out disinfection to sewage, individual hospitals has adopted biologic treating technique in various degree.The Hospital Sewage Treatment technical development has developed out different processing methodes to now, as: pharmacy disinfection, coagulating sedimentation+sterilization, membrane filtration+sterilization, film biology+sterilization, biological treatment+sterilization etc.These methods generally can only be taken stopgap measures, and can not effect a permanent cure, can't reuse.
Though in the former Hospital Sewage Treatment of bio-contact oxidation application was arranged once also, but organic matter removal is not thorough, go out the water suspension height, subsequent technique needs settling tank, the not oxidized settling tank that just enters of some difficult oxidizing substance, these materials continue aerobic decomposition in settling tank, caused settled sludge to be anaerobic state and float, and effluent quality is poor.
The MBR membrane bioreactor is membrane separation technique to be combined with biotechnology and a kind of novel, the sewage disposal technology efficiently that form, only obtains research at present in petrochemical industry, middle water reuse field and uses.
In the MBR membrane bioreactor, replace secondary sedimentation basins and sand filter in the traditional biological treatment technology by membrane module, but hidden a lot of shortcomings in actual applications, as the film pollution etc.
In order to stop hospital sewage surrounding enviroment are worked the mischief, stop cross infection, must innovate existing Hospital Sewage Treatment technology.
Summary of the invention
The present invention is intended to solve the problem that above-mentioned technology exists, and provides a kind of and treats both principal and secondary aspect of disease, non-secondary pollution, the bio-contact oxidation of safety and the system that MBR film coupling technique is handled hospital sewage.
In order to achieve the above object, technical scheme provided by the present invention is: a kind of bio-contact oxidation and MBR film coupling technique are handled the system of hospital sewage, its constructional feature is to comprise grille well, anaerobism settling tank, biological contact oxidation pond, MBR pond and antisepsis contact tank that series connection successively is communicated with; The feed-water end of described grille well is provided with water inlet pipe; Be equipped with the sludge pump that links to each other with sludge pump on described anaerobism settling tank, biological contact oxidation pond, the MBR pond and advance the mud pipe; The bottom in described biological contact oxidation pond, MBR pond is equipped with the aerator unit, and this aerator unit links to each other with gas blower by pipeline; Be provided with combined stuffing in the described biological contact oxidation pond, this combined stuffing is arranged on top, aerator unit; Described MBR is provided with the MBR membrane module in the pond, and this MBR membrane module is arranged on top, aerator unit.
The coupling of applying biological catalytic oxidation of the present invention and two kinds of technologies of MBR film, the former function are removed the suspended particle greater than 1um for sewage is carried out pre-treatment, and the latter's function is biological respinse absorption and filters, with the pollution substance in the thorough removal hospital sewage.
Below be the technical scheme of further improvement of the present invention:
In order to tackle bulky dirt, be provided with mechanical grille in the described grille well.
Further, be provided with clean water basin behind the described antisepsis contact tank, rising pipe is equipped with in the water side of these clean water basin.
In order to guarantee that sterilization fully, is provided with polylith baffling dividing plate in the described antisepsis contact tank, this antisepsis contact tank links to each other with the sterilization administration apparatus by drug tube.Further, the fast baffling dividing plate of adjacent company staggered arrangement up and down in the polylith baffling dividing plate.
In order to guarantee sedimentation effect, be convenient to collect solid dirt, described anaerobism settling tank bottom is provided with slope, is provided with the inclined tube that is positioned at the anaerobism settling tank above slope.Further, the gradient of described slope is 40 ° ~ 60 °, more preferably 45 °.
According to embodiments of the invention, described aerator unit is that eddy flow is sheared bubble aeration device unit.
As a kind of mode of communicating, described MBR pond is communicated with described antisepsis contact tank by suction pump and pipeline.
Further, the present invention also provides a kind of system that utilizes above-mentioned bio-contact oxidation and MBR film coupling technique to handle hospital sewage to carry out the method for Hospital Sewage Treatment:
1) water inlet precipitates 8 ~ 12 hours after filtering through grille well in the anaerobism settling tank;
2) supernatant liquor in the anaerobism settling tank enters the interior blast aeration of biological contact oxidation pond 5 ~ 7 hours;
3) entered in the MBR pond blast aeration 2.5 ~ 3.5 hours through the sewage of bio-contact oxidation;
4) enter sterilization discharge after 2.5 ~ 3.5 hours in the antisepsis contact tank through the liquid after the film biological treatment.
By said structure, described bio-contact oxidation and MBR film coupling technique are handled the system of hospital sewage, comprise grille well, anaerobism settling tank, biological contact oxidation pond, MBR pond, antisepsis contact tank, clean water basin etc.Wherein the anaerobism settling tank has adjusting, acidication and the three kinds of functions of just sinking, some hard-degraded substance in the hospital sewage can be carried out acidification, utilize active strong, the characteristics that adaptive faculty is strong of hydrolysis, acid-producing bacteria with the macromolecular structure of difficult degradation in the sewage through decompose, acidifying is the solubility small molecules, can improve biodegradability B/C ratio, for the next stage biological treatment improves the clearance of pollutent be laid a solid foundation.
In addition, the anaerobism settling tank is acidificable and minimizing surplus sludge volume also, and is that subsequent technique replenishes the high-quality carbon source.
Biological contact oxidation pond has removes most of organism and hold back＞dual function of 1um particulate matter, Hospital Sewage Treatment can be reached country-level B standard.And to reducing the pollution of MBR technology film, improve membrane flux, cut down the consumption of energy and contribute to some extent.
MBR technology mainly plays removal remaining organism after previous process is handled, and suspended substance is held back and filtered, and water outlet reaches national reuse water standard.
Bio-contact oxidation and MBR film coupling technique are handled hospital sewage, and pollutant removal is good, strong shock resistance, and the membrane filtration water outlet is very stable, NH
3The clearance of-N and SS can reach more than 99%, long SRT and the crown_interception of film have played good effect, its effluent quality is better than " urban sewage reutilization city miscellaneous water water quality " (GB/T 18920-2002) standard, this be other technologies can't be obtained.
The present invention adopts anaerobism precipitation+bio-contact oxidation+MBR film+sterilization process to handle hospital sewage, and technology is reliable, and treatment effect is good, but water outlet direct reuse, operational administrative is easy, and environmental benefit and social benefit are good, can use widely and promote in the Hospital Sewage Treatment afterwards.
Compared with prior art, the invention has the beneficial effects as follows: the pollution of entire sewage treatment station height devices of the present invention design, little, the no building construction of floor space, airtight operation, noiseless, foul smell.Water outlet can reach the reuse water standard, can be used for water use sectors such as greening, flushing lavatory and view.
The present invention is further elaborated below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the two dimensional structure synoptic diagram of an embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In the drawings
The 1-grille well; The 1a-mechanical grille; The 1b-water inlet pipe; 2-anaerobism settling tank; The 2a-inclined tube; The 3-biological contact oxidation pond; The 4-MBR pond; The 5-antisepsis contact tank; 5a-baffling dividing plate; The 6-clean water basin; The 6a-rising pipe; The 7-gas blower; 7a (7b)-eddy flow is sheared bubble aeration device unit; The 8-suction pump; 8a-suction pump water inlet pipe; 8b-suction pump rising pipe; The 9-administration apparatus of sterilizing; The 9a-drug tube; The 10-sludge pump; 10a (10b, 10c)-sludge pump advances the mud pipe; The 11-combined stuffing; The 12-MBR membrane module.
Embodiment
A kind of bio-contact oxidation and MBR film coupling technique are handled the system of hospital sewage, as shown in Figure 1 and Figure 2, comprise grille well 1, anaerobism settling tank 2, biological contact oxidation pond 3, MBR pond 4, antisepsis contact tank 5, clean water basin 6 etc.Be provided with mechanical grille 1a in the described grille well 1, entrance is provided with water inlet pipe 1b.Described anaerobism settling tank 2 bottoms are provided with 4 135 ° slope, and top is provided with inclined tube 2a.The bottom of described biological contact oxidation pond 3 is provided with eddy flow and shears bubble aeration device unit 7a, is provided with combined stuffing 11 in the pond.The bottom in described MBR pond 4 is provided with eddy flow and shears bubble aeration device unit 7b, is provided with MBR membrane module 12 in the pond.Be provided with baffling dividing plate 5a in the described antisepsis contact tank 5.The end of described clean water basin 6 is provided with rising pipe 6a.
The blast tube of described gas blower 7 is sheared bubble aeration device unit 7a with the eddy flow that is arranged on biological contact oxidation pond 3 bottoms respectively, and the eddy flow of 4 bottoms, MBR pond is sheared bubble aeration device unit 7b and connected.
The entrance of described suction pump 8 is connected with the suction pump water inlet pipe 8a of membrane module 12 in being arranged on MBR pond 4; Outlet is connected with the suction pump rising pipe 8b that is arranged on antisepsis contact tank 5 side pool walls.
Described sterilization administration apparatus 9 is connected with antisepsis contact tank 5 through drug tube 9a.
The entrance of described sludge pump 10 advances mud pipe 10a with the sludge pump that is arranged on anaerobism settling tank 2 sidewalls bottom respectively, and the sludge pump of biological contact oxidation pond 3 sidewalls bottom advances mud pipe 10b, and the sludge pump of MBR pond 4 sidewalls bottom advances mud pipe 10c and connects.
Bio-contact oxidation of the present invention and MBR film coupling technique are handled the system of hospital sewage, and main flow process is: water inlet pipe grille well → anaerobism settling tank → biological contact oxidation pond → MBR pond → antisepsis contact tank → clean water basin → rising pipe.
The minute quantity excess sludge that anaerobism settling tank, biological contact oxidation pond, MBR pond produce regularly effluxes, and after the chlorination slaking, can be used as greening with fertile.
The mechanical grille that arranges in the grille well, its effect are to hold back bigger suspended substance or floating matter, in order to alleviate the processing load of subsequent disposal structures.
The effect of anaerobism settling tank double as septic tank, preliminary sedimentation tank, equalizing tank.
Be provided with eddy flow in the biological contact oxidation pond and shear bubble aeration device unit and combined stuffing.Its combined stuffing surface length has microbial film.There are not sludge bulking and mud reflux problem.Because arranging of filler played cutting and barrier effect to bubble, the residence time of bubble and the surface-area of gas-to-liquid contact are increased, so improved the oxygen absorption ability, can reduce aeration rate.In biological contact oxidation pond, sewage extensively contacts with microbial film on the filler, and under the effect of microorganism metabolic function, the organism in the sewage is removed, and sewage is purified.
Be provided with eddy flow in the MBR pond and shear bubble aeration device unit and MBR membrane module.MBR is the abbreviation of membrane bioreactor, is membrane sepn to be combined with biotechnology and a kind of novel, the sewage disposal technology efficiently that form.The MBR conduct is solid-liquid separation system efficiently, has namely saved the second pond in the ordinary process, again the microorganism in the biosystem is trapped in the reactor fully, has increased sludge concentration and biochemical reaction rate.Simultaneously, the filtering function of MBR has guaranteed that water outlet do not have any impurity, and nearly all pathogenic bacteria, virus and pathogenic protozoa all are trapped within the reactor, is getting final product reuse after through sterilization.Simultaneously, can reduce chlorine dosage in a large number.
Be provided with the baffling dividing plate in the antisepsis contact tank, to prolong runner and to increase the contact reacts time.Sterilization is the important process process of Hospital Sewage Treatment, its objective is various pathogenic agent and the pathogenic bacterium killed in the sewage, also can improve water quality simultaneously, reaches the reuse water standard.
Clean water basin play storage, transfer and handle qualified reuse water, are delivered to Subscriber Unit through rising pipe.
A kind of system that utilizes above-mentioned bio-contact oxidation and MBR film coupling technique to handle hospital sewage carries out the method for Hospital Sewage Treatment:
1) water inlet precipitates 10 hours after filtering through grille well in the anaerobism settling tank;
2) supernatant liquor in the anaerobism settling tank enters the interior blast aeration of biological contact oxidation pond 6 hours;
3) entered in the MBR pond blast aeration 3 hours through the sewage of bio-contact oxidation;
4) enter sterilization discharge after 3 hours in the antisepsis contact tank through the liquid after the film biological treatment.
Be example to handle certain hospital wastewater:
(1) influent quality
COD
Cr≤ 400mg/L, BOD
5≤ 200mg/L, SS≤280mg/L, NH
4-N≤50mg/L, colibacillus of excrement≤16000(MPN/L), total residual chlorine--.
(2) residence time
1. anaerobism settling tank: 10h
2. biological contact oxidation pond: 6h
3. MBR pond: 3h
4. disinfecting tank: 3h
(3) effluent quality
COD
Cr≤ 50mg/L, BOD
5≤ 15mg/L, SS≤10mg/L, NH
4-N≤8mg/L, colibacillus of excrement≤500(MPN/L), total residual chlorine≤0.5mg/L.
Water outlet is used as flushing road, greening and carwash in hospital.
The content that above-described embodiment is illustrated should be understood to these embodiment and only is used for being illustrated more clearly in the present invention, limit the scope of the invention and be not used in, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Claims (10)
1. a bio-contact oxidation and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that, comprise grille well (1), anaerobism settling tank (2), biological contact oxidation pond (3), MBR pond (4) and antisepsis contact tank (5) that series connection successively is communicated with; The feed-water end of described grille well (1) is provided with water inlet pipe (1b); Be equipped with the sludge pump that links to each other with sludge pump (10) on described anaerobism settling tank (2), biological contact oxidation pond (3), MBR pond (4) and advance mud pipe (10a, 10b, 10c); The bottom of described biological contact oxidation pond (3), MBR pond (4) is equipped with aerator unit (7a, 7b), and this aerator unit (7a, 7b) links to each other with gas blower (7) by pipeline; Be provided with combined stuffing (11) in the described biological contact oxidation pond (3), this combined stuffing (11) is arranged on top, aerator unit (7a); Be provided with MBR membrane module (12) in the described MBR pond (4), this MBR membrane module (12) is arranged on top, aerator unit (7b).
2. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that, are provided with mechanical grille (1a) in the described grille well (1).
3. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that be provided with clean water basin (6) behind the described antisepsis contact tank (5), rising pipe (6a) is equipped with in the water side of these clean water basin (6).
4. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that, be provided with polylith baffling dividing plate (5a) in the described antisepsis contact tank (5), this antisepsis contact tank (5) links to each other with sterilization administration apparatus (9) by drug tube (9a).
5. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that, described anaerobism settling tank (2) bottom is provided with slope, is provided with the inclined tube (2a) that is positioned at anaerobism settling tank (2) above slope.
6. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that, described aerator unit (7a, 7b) shears bubble aeration device unit for eddy flow.
7. bio-contact oxidation according to claim 1 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that described MBR pond (4) is communicated with described antisepsis contact tank (5) by suction pump (8) and pipeline.
8. bio-contact oxidation according to claim 4 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that the fast baffling dividing plate of adjacent company staggered arrangement up and down in the polylith baffling dividing plate (5a).
9. bio-contact oxidation according to claim 5 and MBR film coupling technique are handled the system of hospital sewage, it is characterized in that the gradient of described slope is 40 ° ~ 60 °.
10. a system that utilizes the described bio-contact oxidation of one of claim 1-9 and MBR film coupling technique to handle hospital sewage carries out the method for Hospital Sewage Treatment:
1) water inlet precipitates 8 ~ 12 hours after filtering through grille well (1) in anaerobism settling tank (2);
2) supernatant liquor in the anaerobism settling tank (2) enters the interior blast aeration of biological contact oxidation pond (3) 5 ~ 7 hours;
3) sewage through bio-contact oxidation enters the interior blast aeration in MBR pond (4) 2.5 ~ 3.5 hours;
4) enter sterilization discharge after 2.5 ~ 3.5 hours in the antisepsis contact tank (5) through the liquid after the film biological treatment.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103880252A (en) * | 2014-04-03 | 2014-06-25 | 深圳市百斯特环保工程有限公司 | Integrated treatment equipment of rural domestic waste |
| CN104944710A (en) * | 2015-06-29 | 2015-09-30 | 安徽省安庆市皖清环保科技有限公司 | Medical wastewater three-stage treatment technique |
| CN104944707A (en) * | 2015-06-26 | 2015-09-30 | 江西省恩皓环保有限公司 | Hospital sewage treatment MBR process |
| CN105174623A (en) * | 2015-09-16 | 2015-12-23 | 潍坊沃华水处理设备有限公司 | MBR (membrane bioreactor) sewage treatment machine |
| CN105347630A (en) * | 2015-12-14 | 2016-02-24 | 武汉中舟环保设备股份有限公司 | MBR membrane process marine sanitary sewage treatment system |
| CN107459152A (en) * | 2017-09-30 | 2017-12-12 | 邱学尧 | A kind of bio-contact oxidation filtering settling pond |
| CN107555720A (en) * | 2017-10-10 | 2018-01-09 | 柴越 | A kind of sewage-treatment plant |
| CN110950501A (en) * | 2019-12-23 | 2020-04-03 | 山东聚祥环境工程有限公司 | BOM production process |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103880252A (en) * | 2014-04-03 | 2014-06-25 | 深圳市百斯特环保工程有限公司 | Integrated treatment equipment of rural domestic waste |
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| CN104944710A (en) * | 2015-06-29 | 2015-09-30 | 安徽省安庆市皖清环保科技有限公司 | Medical wastewater three-stage treatment technique |
| CN105174623A (en) * | 2015-09-16 | 2015-12-23 | 潍坊沃华水处理设备有限公司 | MBR (membrane bioreactor) sewage treatment machine |
| CN105347630A (en) * | 2015-12-14 | 2016-02-24 | 武汉中舟环保设备股份有限公司 | MBR membrane process marine sanitary sewage treatment system |
| CN105347630B (en) * | 2015-12-14 | 2018-03-30 | 武汉中舟环保设备股份有限公司 | A kind of MBR embrane methods marine domestic sewage processing system |
| CN107459152A (en) * | 2017-09-30 | 2017-12-12 | 邱学尧 | A kind of bio-contact oxidation filtering settling pond |
| CN107555720A (en) * | 2017-10-10 | 2018-01-09 | 柴越 | A kind of sewage-treatment plant |
| CN107555720B (en) * | 2017-10-10 | 2020-11-03 | 广西盛隆钢铁材料研究院 | Sewage treatment device |
| CN110950501A (en) * | 2019-12-23 | 2020-04-03 | 山东聚祥环境工程有限公司 | BOM production process |
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Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: POWERCHINA ZHONGNAN ENGINEERING Corp.,Ltd. Patentee after: Hunan Chenzhou Guoshui Water Treatment Co.,Ltd. Address before: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee before: HYDROCHINA ZHONGNAN ENGINEERING Corp. Patentee before: Hunan Chenzhou Guoshui Water Treatment Co.,Ltd. |
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| CP03 | Change of name, title or address |
Address after: 410014 Hunan province Changsha Yuhua District, camphor Road No. 16 Patentee after: HYDROCHINA ZHONGNAN ENGINEERING Corp. Patentee after: Hunan Chenzhou Guoshui Water Treatment Co.,Ltd. Address before: 410014, 9 camphor Road, Yuhua District, Hunan, Changsha Patentee before: Mid-South Hydroelectric Investigation & Design Institute of China Hydropower Engineering Consulting Group Patentee before: Hunan Chenzhou Guoshui Water Treatment Co.,Ltd. |