CN103288301B - 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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- CN103288301B CN103288301B CN201310255730.1A CN201310255730A CN103288301B CN 103288301 B CN103288301 B CN 103288301B CN 201310255730 A CN201310255730 A CN 201310255730A CN 103288301 B CN103288301 B CN 103288301B
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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 Hospital Sewage Treatment field, refer in particular to bio-contact oxidation and MBR film coupling technique and process the system of hospital sewage and the method for sewage disposal.
Background technology
Hospital sewage is made up of the sewage of testing the place discharges 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 composite wastewater composition intricate, pollution level is large, and intractability is higher.
China just processed 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, after a small amount of hospital carries out disinfection to sewage, entered water drain, indivedual hospitals have adopted biologic treating technique in various degree.Progress in Technology of Hospital Wastewater Treatment develops into now, has developed out different processing methodes, 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, cannot reuse.
Although also once had application in the former Hospital Sewage Treatment of bio-contact oxidation, but organic matter removal is not thorough, go out water suspension high, 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, have caused settled sludge to be anaerobic state and have floated, and effluent quality is poor.
MBR membrane bioreactor is membrane separation technique to be combined with biotechnology and novel, the efficient sewage disposal technology of one that forms, is only studied and applies in petrochemical industry, middle water reuse field at present.
In MBR membrane bioreactor, replace secondary sedimentation basins and the sand filter in traditional biological treatment technology by membrane module, but hidden in actual applications a lot of shortcomings, as film pollution etc.
In order to stop hospital sewage, surrounding enviroment are worked the mischief, stop cross infection, must innovate existing Progress in Technology of Hospital Wastewater Treatment.
Summary of the invention
The present invention is intended to solve the problem that above-mentioned technique exists, the system of providing a kind of and treat both principal and secondary aspect of disease, the bio-contact oxidation of non-secondary pollution, safety and MBR film coupling technique being processed 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 processed the system of hospital sewage, its constructional feature is to comprise series connection is communicated with successively grille well, anaerobism settling tank, biological contact oxidation pond, MBR pond and antisepsis contact tank; The feed-water end of described grille well is provided with water inlet pipe; On described anaerobism settling tank, biological contact oxidation pond, MBR pond, be equipped with the sludge pump being connected with sludge pump and enter mud pipe; The bottom in described biological contact oxidation pond, MBR pond is equipped with aerator unit, and this aerator unit is connected with gas blower by pipeline; In described biological contact oxidation pond, be provided with combined stuffing, this combined stuffing is arranged on top, aerator unit; Described MBR is provided with MBR membrane module in 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 techniques of MBR film, the former function, for sewage is carried out to pre-treatment, is removed the suspended particle that is greater than 1um, and the latter's function is biological respinse absorption and filters, thoroughly to remove the pollution substance in hospital sewage.
Be below the technical scheme of further improvement of the present invention:
In order to tackle bulky dirt, in described grille well, be provided with mechanical grille.
Further, after described antisepsis contact tank, be provided with clean water basin, 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 described antisepsis contact tank, this antisepsis contact tank is connected with sterilization administration apparatus by drug tube.Further, the fast baffling dividing plate of adjacent company staggered arrangement up and down in 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 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 rotational flow shearing air bubble aerator 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 of utilizing above-mentioned bio-contact oxidation and MBR film coupling technique to process hospital sewage to carry out the method for Hospital Sewage Treatment:
1) water inlet precipitates 8 ~ 12 hours after grille well filters in anaerobism settling tank;
2) supernatant liquor in anaerobism settling tank enters the interior blast aeration of biological contact oxidation pond 5 ~ 7 hours;
3) enter in MBR pond blast aeration 2.5 ~ 3.5 hours through the sewage of bio-contact oxidation;
4) enter after sterilizing 2.5 ~ 3.5 hours in antisepsis contact tank and discharge through the liquid after film biological treatment.
By said structure, described bio-contact oxidation and MBR film coupling technique are processed 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 anaerobism settling tank has adjusting, acidication and the three kinds of functions of just sinking, some hard-degraded substance in hospital sewage can be carried out to acidification, utilizing hydrolysis, strong, the adaptable feature of acid-producing bacteria activity is solubility small molecules by the macromolecular structure of difficult degradation in sewage through decomposition, acidifying, can improve biodegradability B/C ratio, for next stage biological treatment improves, the clearance of pollutent be laid a solid foundation.
In addition, anaerobism settling tank is acidificable and minimizing surplus sludge volume also, and is that subsequent technique supplements high-quality carbon source.
Biological contact oxidation pond has the dual function of removing most of organism and holding back > 1um particulate matter, Hospital Sewage Treatment can be reached to country-level B standard.And pollute reducing MBR technique film, raising membrane flux, reduction energy consumption are contributed to some extent.
MBR technique mainly rises removes remaining organism after art breading above, 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 processed hospital sewage, and pollutant removal is good, strong shock resistance, and film filtration effluent is very stable, NH
3the clearance of-N and SS can reach more than 99%, longer 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 techniques can't be obtained.
The present invention adopts anaerobism precipitation+bio-contact oxidation+MBR film+sterilization process to process hospital sewage, and technology is reliable, and treatment effect is good, water outlet can direct reuse, operational administrative is easy, and environmental benefit and social benefit are good, can in Hospital Sewage Treatment afterwards, apply widely and promote.
Compared with prior art, the invention has the beneficial effects as follows: whole sewage works height devices of the present invention design, floor space be little, without the pollution of building construction, airtight operation, noiseless, foul smell.Water outlet can reach reuse water standard, can be used for the water use sectors such as greening, toilet flushing and view.
Below in conjunction with drawings and Examples, the present invention is further elaborated.
Accompanying drawing explanation
Fig. 1 is the two dimensional structure schematic diagram of an embodiment of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
In the drawings
1-grille well; 1a-mechanical grille; 1b-water inlet pipe; 2-anaerobism settling tank; 2a-inclined tube; 3-biological contact oxidation pond; 4-MBR pond; 5-antisepsis contact tank; 5a-baffling dividing plate; 6-clean water basin; 6a-rising pipe; 7-gas blower; 7a (7b)-rotational flow shearing air bubble aerator unit; 8-suction pump; 8a-suction pump water inlet pipe; 8b-suction pump rising pipe; The 9-administration apparatus of sterilizing; 9a-drug tube; 10-sludge pump; 10a (10b, 10c)-sludge pump enters mud pipe; 11-combined stuffing; 12-MBR membrane module.
Embodiment
Bio-contact oxidation and MBR film coupling technique are processed a system for 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.In described grille well 1, be provided with mechanical grille 1a, entrance is provided with water inlet pipe 1b.Described anaerobism settling tank 2 bottoms are provided with the slope of 4 135 °, and top is provided with inclined tube 2a.The bottom of described biological contact oxidation pond 3 is provided with rotational flow shearing air bubble aerator unit 7a, is provided with combined stuffing 11 in pond.The bottom in described MBR pond 4 is provided with rotational flow shearing air bubble aerator unit 7b, is provided with MBR membrane module 12 in pond.In described antisepsis contact tank 5, be provided with baffling dividing plate 5a.The end of described clean water basin 6 is provided with rising pipe 6a.
The blast tube of described gas blower 7 respectively with the rotational flow shearing air bubble aerator unit 7a that is arranged on biological contact oxidation pond 3 bottoms, the rotational flow shearing air bubble aerator unit 7b of 4 bottoms, MBR pond connects.
The entrance of described suction pump 8 is connected with the suction pump water inlet pipe 8a that is arranged on the membrane module 12 in 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 enters mud pipe 10a with the sludge pump that is arranged on anaerobism settling tank 2 sidewall bottoms respectively, and the sludge pump of biological contact oxidation pond 3 sidewall bottoms enters mud pipe 10b, and the sludge pump of 4 sidewall bottoms, MBR pond enters mud pipe 10c and connects.
Bio-contact oxidation of the present invention and MBR film coupling technique are processed 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 is outer row regularly, after chlorination slaking, can be used as green fertilizer.
The mechanical grille arranging in grille well, its effect is to hold back larger suspended substance or floating matter, to alleviate the processing load of subsequent disposal structures.
Anaerobism settling tank doubles as the effect of septic tank, preliminary sedimentation tank, equalizing tank.
In biological contact oxidation pond, be provided with rotational flow shearing air bubble aerator unit and combined stuffing.Its combined stuffing surface length has microbial film.There is not sludge bulking and sludge 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, therefore improved oxygen absorption ability, can reduce aeration rate.In biological contact oxidation pond, sewage extensively contacts with the microbial film on filler, and under the effect of bacteria metabolism function, the organism in sewage is removed, and sewage is purified.
In MBR pond, be provided with rotational flow shearing air bubble aerator unit and MBR membrane module.MBR is the abbreviation of membrane bioreactor, is membrane sepn to be combined with biotechnology and novel, the efficient sewage disposal technology of one that forms.MBR, as efficient solid-liquid separation system, has saved the second pond in ordinary process, again the microorganism in biosystem is trapped in reactor completely, has increased sludge concentration and biochemical reaction rate.Meanwhile, the filtering function of MBR has guaranteed that water outlet is without any impurity, and nearly all pathogenic bacteria, virus and pathogenic protozoa is all trapped within reactor, after sterilization, is getting final product reuse.Meanwhile, can reduce in a large number chlorine dosage.
In antisepsis contact tank, be provided with baffling dividing plate, to extend 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 sewage, also can improve water quality simultaneously, reaches reuse water standard.
Clean water basin play storage, transfer and process qualified reuse water, are delivered to Subscriber Unit through rising pipe.
A kind of system of utilizing above-mentioned bio-contact oxidation and MBR film coupling technique to process hospital sewage is carried out the method for Hospital Sewage Treatment:
1) water inlet precipitates 10 hours after grille well filters in anaerobism settling tank;
2) supernatant liquor in anaerobism settling tank enters the interior blast aeration of biological contact oxidation pond 6 hours;
3) enter in MBR pond blast aeration 3 hours through the sewage of bio-contact oxidation;
4) enter after sterilizing 3 hours in antisepsis contact tank and discharge through the liquid after film biological treatment.
To process certain hospital wastewater as example:
(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 in hospital rinses road, greening and carwash.
The content that above-described embodiment is illustrated should be understood to these embodiment only 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 limited range to the modification of the various equivalent form of values of the present invention.
Claims (4)
1. a bio-contact oxidation and MBR film coupling technique are processed the system of hospital sewage, it is characterized in that, comprise series connection is communicated with successively grille well (1), anaerobism settling tank (2), biological contact oxidation pond (3), MBR pond (4) and the antisepsis contact tank (5) that are integrated in a device; The feed-water end of described grille well (1) is provided with water inlet pipe (1b); On described anaerobism settling tank (2), biological contact oxidation pond (3), MBR pond (4), be equipped with the sludge pump being connected with sludge pump (10) and enter 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) is connected with gas blower (7) by pipeline; In described biological contact oxidation pond (3), be provided with combined stuffing (11), this combined stuffing (11) is arranged on top, aerator unit (7a); In described MBR pond (4), be provided with MBR membrane module (12), this MBR membrane module (12) is arranged on top, aerator unit (7b); In described antisepsis contact tank (5), be provided with polylith baffling dividing plate (5a), this antisepsis contact tank (5) is connected with sterilization administration apparatus (9) by drug tube (9a); 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; (7a, 7b) is rotational flow shearing air bubble aerator unit in described aerator unit; Described MBR pond (4) is communicated with described antisepsis contact tank (5) by suction pump (8) and pipeline; Adjacent two baffling dividing plates staggered arrangement up and down in polylith baffling dividing plate (5a); The gradient of described slope is 40 ° ~ 60 °.
2. bio-contact oxidation according to claim 1 and MBR film coupling technique are processed the system of hospital sewage, it is characterized in that, are provided with mechanical grille (1a) in described grille well (1).
3. bio-contact oxidation according to claim 1 and MBR film coupling technique are processed the system of hospital sewage, it is characterized in that, after described antisepsis contact tank (5), be provided with clean water basin (6), rising pipe (6a) is equipped with in the water side of these clean water basin (6).
4. a method of utilizing the system of the described bio-contact oxidation of one of claim 1-3 and MBR film coupling technique processing hospital sewage to carry out Hospital Sewage Treatment:
1) water inlet precipitates 8 ~ 12 hours after grille well (1) filters in anaerobism settling tank (2);
2) supernatant liquor in anaerobism settling tank (2) enters the interior blast aeration of biological contact oxidation pond (3) 5 ~ 7 hours;
3) enter the interior blast aeration in MBR pond (4) 2.5 ~ 3.5 hours through the sewage of bio-contact oxidation;
4) liquid after film biological treatment enters sterilization discharge after 2.5 ~ 3.5 hours in antisepsis contact tank (5).
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| CN103880252B (en) * | 2014-04-03 | 2015-06-03 | 深圳市百斯特环保工程有限公司 | Integrated treatment equipment of rural domestic waste |
| CN104944707B (en) * | 2015-06-26 | 2017-04-26 | 江西省恩皓环保有限公司 | Hospital sewage treatment MBR process |
| CN104944710B (en) * | 2015-06-29 | 2017-07-07 | 中邦园林股份有限公司 | A kind of medical waste water tertiary treatment 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 |
| 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 |
| 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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| CN102267785A (en) * | 2011-07-11 | 2011-12-07 | 中国水电顾问集团中南勘测设计研究院 | Renewable water treatment device and method by use of micro-polluted water bodies as sources |
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