CN201915000U - Sequencing batch type domestic sewage treatment device - Google Patents
Sequencing batch type domestic sewage treatment device Download PDFInfo
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- CN201915000U CN201915000U CN2010206139509U CN201020613950U CN201915000U CN 201915000 U CN201915000 U CN 201915000U CN 2010206139509 U CN2010206139509 U CN 2010206139509U CN 201020613950 U CN201020613950 U CN 201020613950U CN 201915000 U CN201915000 U CN 201915000U
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Abstract
The utility model relates to a sequencing batch type domestic sewage treatment device, which comprises a device body, an ultraviolet over-current sterilizer and a film assembly unit which are positioned outside the body; the device body consists of three cabinets, namely, a sewage collecting cabinet, a sequencing batch type reaction cabinet and a clear water cabinet; the sewage collecting cabinet is provided with a sewage entrance and a preaeration pipe; the sewage collecting cabinet is communicated with the sequencing batch type reaction cabinet through a grinding pump and a control valve; the sequencing batch type reaction cabinet is internally provided with an aeration pipe, and the reaction, the precipitation and the separation of the sequencing batch type cabinet are controlled through a PLC (Programmable Logic Controller) procedure; the control parameters in the PLC can be adjusted according to the practical condition; the clear water treated by the sequencing batch type reaction cabinet is sucked out by a transfer pump and is collected in the clear water cabinet after being treated through the ultraviolet sterilizer and the film assembly unit externally arranged; and the clear water is finally discharged outboard through a draining pump. The operation of each component of the device is coordinated by the PLC. The device is capable of obviously improving the water quality of the domestic sewage treatment and effectively controlling the output of the sludge; the device is compact in structure, convenient to maintain and high in degree of automation, and is applied to ship environment.
Description
Affiliated field
The utility model relates to a kind of sewage treatment unit, particularly is applicable to the sewage treatment unit of boats and ships.
Background technology
Along with developing on an unprecedented scale of shipping-trade and ocean exploitation, the pollution of ocean environment is also more and more serious, and is human to marine environmental protection also pay attention to day by day.
International Maritime Organizaton (IMO) just formulated International Convention for the Prevention of Pollution from Ships as far back as 1973, and the protocol that passed through in 1978 is revised it, i.e. " MARPOL 73/78 " pact.For supplemental provisions IV in this pact---prevent the regulation that sanitary sewage pollutes, just made the requirement of control Sewage from Ships discharging, because technology at that time is not mature enough and the restriction of objective condition, have only minority developed country to take the lead in carrying out, these specified requirement boats and ships must be installed standard compliant sewage treatment unit.
Along with each contracting states of IMO has possessed this supplemental provisions effective term in succession; for some time after this again through repeatedly revising; the environmental protection meeting resolution MEPC.88 (44) 73/78 that passes through up to environmental protection meeting on March 13 in 2000; the effective date of pollution convention supplemental provisions IV is just formally decided, and MARPOL pact supplemental provisions IV came into force on September 27th, 2003.
During this period China also put into effect in succession " Pollution From Ships thing emission standard " (GB3552-83), " marine domestic sewage treatment system technical qualification " a series of files such as (GB10833-89), the processing and the discharging of Sewage from Ships retrained.
" about the suggestion and the performance test guide rule of the international ejecta standard of sewage treatment unit " that IMO Maritime Environment Protection Committee once passed through with MEPC.2 (VI) resolution in its 6th session on December 3rd, 1976 made requirement to ejecta standard and performance test guide rule that national governments use when sewage treatment unit is approved.After stipulated " sewage treatment unit type approval test and accreditation criteria " with MEPC.8/WP.3 again.
The emission standard that MEPC.2 (VI) resolution is passed through is:
Thermotolerant coliform standard :≤250/100ml
Suspended solids total amount (TSS) standard :≤50mg/l
Five-day BOD (BOD5)≤50mg/l
On October 13rd, 2006, IMO Maritime Environment Protection Committee passed through " revised enforcement sewage treatment unit ejecta standard and performance test guide rule " with MEPC.159 (55) resolution, and all devices that requires national governments that on January 1st, 2010 or installation are later on uploaded meets the guide rule of this revision as far as possible under reasonable and feasible situation.
MEPC.159 (55) resolution is resolved to MEPC.2 (VI) and is revised, and mainly sewage treatment unit ejecta standard and performance test guide rule is revised, and has improved the requirement of every index, new emission standard:
Thermotolerant coliform standard :≤100/100ml
Suspended solids total amount (TSS) standard :≤35mg/l
Five-day BOD (BOD5)≤25mg/l
Chemical oxygen demand (COD) (COD) :≤125mg/l
The various factors that new criteria should be considered during also to the type approval test of new sewage treatment unit: proposed clear and definite requirement as the quality of former life sewage, the time length of test and envrionment test of arrangement of time, burden requirement, sampling method and number of times, ejecta analytical test, sterilizing agent resistates, yardstick factor and sewage treatment unit or the like.
The present boats and ships of building the overwhelming majority have all been installed marine sewage treatment system, but along with international norm is further strict to the Sewage from Ships emission request, simultaneously the improving constantly of modern ships level of automation, engine room structure space are developed towards densification, and existing Sewage from Ships treatment unit can not satisfy the requirement of new shipbuilding oceangoing ship.
Current both at home and abroad Sewage from Ships the processing takes biochemical process to handle more, has simple in structure, effective, advantages such as running cost is low, non-secondary pollution.Biochemical process is meant to be had under the condition of abundant oxygen, set up and keep the condition of the suitable growth of aerobic bacteria, and cultivate into active sludge and contact with sewage, biochemical action by active sludge, organism in the digest and decompose sewage, reduce BOD5 and colititre, absorption and the agglutination by mud simultaneously deposits suspended solid absorption.
The typical process flow that biochemical process is handled is: sewage enters in the one-level aerate cabinet; Organic substance in the sewage fully contacts with active sludge, by activated sludge absorption, is oxidized to inorganicss such as carbonic acid gas, water under the effect of bacterium under the effect of oxygen; All the other become the protoplasma that can constitute bacterial cell, along with the Metabolic activity of bacterium is converted into energy and decomposition and consumption falls.The aerate cabinet that remaining mixed solution enters into subordinate phase after by coarse filtration carries out further oxygenolysis, and standing in the aeration tank of subordinate phase have soft-filler, is convenient to good bacteria in the active sludge and adheres to and breed; The carbonic acid gas that one secondary aerate cabinet produces is overflowed by ventage.Mixed solution finally enters the precipitation sterilizing-cabinet, is separated into active sludge and primary water.Sedimentary mud is returned to the one-level aerate cabinet through pump or air-lift unit pipeline, and primary water carries out disinfection.Disinfection way comprises and adds hypochlorite to the primary water sterilization or take disinfectant measures such as ozone, uviolizing, final treating water discharging outboard.
The existing this many emission standards that can only satisfy MEPC.2 (VI) resolution of sanitary sewage device of taking continuous aeration, its water quality of disposing of sewage can't satisfy requirement stricter in International Maritime Organizaton's new criteria.And it is bulky; Culturing bacterium correctly before each the startup usually can be pulled in to shore because of boats and ships, and the sewage quantity deficiency causes " dying of hunger " with the bacterium that decomposition sewage is made a living; Simultaneously former thereby cause device often can't normally move because of bacterium, have in the sewage jar with malodorous to discharge such as biogas and the inflammable toxic gas of hydrogen sulfide; Need the dirty slag (foul smelling) in the periodic cleaning storage tank.The thread fungus excessive multiplication also takes place when working in long-term continuous aeration easily, produces sludge bulking, causes discharge water to exceed standard.
In recent years in order to improve discharging water quality, some precipitate and separate with sump tank changes ultra-filtration membrane into and separates, by built-in suspension membrane module isolating active mud and primary water, though obviously improved discharging water quality, but because the film working load is too high, be easy to stop up, need regular adding medicine to clean and replacing.For boats and ships narrow space and cabin relative closure environment, it all is very inconvenient the dosing cleaning system being set or opening cabinet replacing film.
The utility model content
In order to address the above problem, the utility model provides a kind of sewage treatment unit of sequence batch (.The technical scheme that is adopted is that preface is criticized intermittent activated sludge process sewage disposal, the sterilization of overflow-type disinfection by ultraviolet light, membrane separation technique in conjunction with being applied in the Sewage from Ships processing.Discharging water quality after not only effectively guaranteeing to handle satisfies strict new criteria standard, and device volume compactness, treatment effect are stable, easy maintenance, level of automation height.
Sequence batch (sewage treatment unit of the present utility model comprises: treatment unit body and be positioned at this an external ultraviolet overcurrent sterilizer and membrane module unit.The sanitary sewage device body by the dirty cabinet of sewage collection, preface criticize the intermittent reaction cabinet, and three cabinets of clear water cabinet form.The collection dirt is provided with sewage inlet cashier's office in a shop, and is provided with the preaeration pipeline; Collecting dirty cabinet is communicated with sequence batch (reaction cabinet by macerator pump and control valve; Be provided with aerating pipelines in the sequence batch (reaction cabinet, by its reaction of PLC time variable control, precipitation, separation, PLC inner control parameter can be regulated according to the actual treatment situation; Pump aspirates out the clear water that sequence batch (reaction cabinet is handled out and by being collected in the clear water cabinet behind ultra violet sterilizer, the external membrane module, the clear water of collecting in the clear water cabinet finally is disposed to outboard by residual sea water pump by rejecting.
The utlity model has following advantage:
First uses the SBR preface criticizes intermittent activated sludge process technology processing Sewage from Ships.Sequencing batch active sludge changes the active sludge growing environment according to time sequence and disposes of sewage, principal character is aerobicly to combine with the anaerobism effect, nitrification and denitrification combines, and will mix, different stepss such as biological degradation, mud-water separation concentrate on one, the operation condition in each stage can be according to changing flexibly according to the sewage character of body and effluent functions requirement etc.Equipment is at Sewage from Ships water quality structure, daily sewage water yield cycle, seawater flushing, discharge water index, and the cabin atmosphere temperature, wave, Sewage from Ships processing environment feature such as inclination, determine the operating parameter of the structure of main reaction cabinet and every functional parameter, reflection system.
At aerobic stage, organism complicated in microorganism and the sewage carries out oxygenolysis, dissolved organic matter sees through microorganism wall and enters in the body, soluble or gelationus organism is then adsorbed by microorganism earlier, and decompose the back by its excretory exoenzyme effect and infiltrate in the cell paste, carry out oxidation, reduction and synthetic by the vital movement of microorganism itself.The organism that a final part is adsorbed is as the energy of vital movements such as biological self reproducing, growth, motion, CO2, H2O, NH3 and the NH4+-N that final oxygenolysis is a simple and stable, NOx-N, PO43-, SO42-etc., another part organism is then by the synthetic new cell of microorganism.After anaerobic stages, under the condition of free-dioxygen,, the complicated organism in the sewage is decomposed into CH4, CO2 and aminate, materials such as N2, N2O by the effect of anaerobion and aerobic-anaerobic microbe.This wherein also comprises the nitrification and denitrification effect, promptly under aerobic condition, and by the effect of aerobic nitrification bacterium, ammonia nitrogen NH3 oxidation nitrous acid nitrogen or nitrate nitrogen NOx-N in the sewage; Under anoxybiotic condition subsequently, utilize nitrifier that nitrous acid nitrogen and nitrate nitrogen are reduced to gaseous nitrogen N2 and N2O etc., the gas that produces in the process is overflowed by escape pipe.
It is thorough more comprehensively than traditional biochemical process reaction that preface is criticized method, and the combination of kinds of reaction not only reduces biological oxygen demand (BOD5) index of effluent quality but also effectively reduces chemical oxygen demand (COD) (COD) index.
Second utilizes the PLC adjustable parameters to control whole preface criticizes the intermittent type treating processes, and the operation of conditioning unit various piece.Can be according to different qualities (the shipping ship or the pleasure boat of the Sewage from Ships water yield and water quality, seawater or fresh water flushing, gravity-flow gathering system or vacuum collection system), by sampling analysis and laboratory on-line monitoring and feedback control, determined the sterilize operation canonical parameter of each operating mode of SBR cabinet operation water inlet mixing, biological degradation, precipitate and separate, discharging.By the summary inching of operating parameter, can make equipment treatment effect under environment targetedly outstanding.
The dirty cabinet of the 3rd employing collection is collected sanitary sewage and is carried out preaeration and mix, and further pulverizes when rejecting in sequence batch (reaction cabinet.This process is controlled by PLC, has promptly finished the preliminary stirring of sanitary sewage and pulverize when collecting, and makes the biochemical reaction initial stage in the serial-batch cabin reach the high speed step of reaction rapidly by having carried out the aeration pre-treatment simultaneously.Total system anti-soil discharge disturbance ability is improved, and discharging water quality is obviously more stable than the multistage aeration treatment facility of biochemical process of past gravity flow.
The 4th preaeration pipeline and aerating pipelines adopt the variable orifice aeration flexible pipe, rather than common micro-hole aerator or perforated pipe.Promptly avoided the inclination under the ship environment, to wave the pressure distribution inequality and the aeration that cause inhomogeneous, the solarization air cap of expansible sealing has simultaneously avoided resting stage residual sewage sludge to the obstruction of solarization air cap.
The 5th adopts external microfiltration membrane as selectable auxiliary treatment measure, clear liquor after the SBR separation is further held back, compare with direct isolating active mud mixed liquid, reduced the working load of film significantly, modular independent column design and mounting means, make things convenient for and use under the ship environment and change, further improve the reliability of marine sewage treatment system discharging water quality.
The 6th with traditional sterilization of dosing formula or ultraviolet water surface illumination-based disinfection, is improved to ultraviolet overcurrent sterilization.Need not contact reacts pond or irradiation case, sterilizing time is short, and the irradiation penetrance is good, and germ-killing efficiency is up to more than 90%.Avoid the secondary chlorine pollution, also improved the disinfectant security.
The 7th full-automatic operation realizes that Long-distance Control and cabin unmanned move continuously.Discharging water quality reaches: thermotolerant coliform :≤100/100ml, suspended solids total amount (TSS) :≤35mg/l, five-day BOD (BOD5)≤25mg/l, chemical oxygen demand (COD) (COD)≤125mg/l, pH value: 6～8.5 requirement.Satisfy the standard (MEPC.159 (55) standard of implementing in 2010) of International Maritime Organizaton.
Description of drawings
Following structure the drawings and specific embodiments are described in further details the utility model.
Fig. 1 is the system flowchart of a kind of embodiment of the utility model
Fig. 2 is a structure iron (front view) of realizing concrete certain model device of flow process shown in Figure 1
Fig. 3 is the side-view of structure shown in Figure 2
Fig. 4 is the vertical view of structure shown in Figure 2
Embodiment
As shown in drawings, treatment unit is mainly by body and be positioned at this external ultraviolet overcurrent sterilizer (21) and membrane module unit (24) formation.The sanitary sewage device body by the dirty cabinet (3) of sewage collection, preface criticize intermittent reaction cabinet (4), and (25) three cabinets of clear water cabinet form.The collection dirt is provided with sewage inlet (1) cashier's office in a shop, and is provided with preaeration pipeline (7); Collecting dirty cabinet (3) is communicated with sequence batch (reaction cabinet (4) by macerator pump (10) and control valve (12); Be provided with aerating pipelines (8) in the sequence batch (reaction cabinet (4), by its reaction of PLC time variable control, precipitation, separation, PLC inner control parameter can be regulated according to the actual treatment situation; Pump (15) aspirates out the clear water that sequence batch (reaction cabinet (4) is handled out and by being collected in the clear water cabinet (25) behind ultra violet sterilizer (21), the external membrane module (24), the clear water that collect (25) in the clear water cabinet finally is disposed to outboard by residual sea water pump (19) by rejecting.
Be pooled to from the sewage in lavatory that the dirty cabinet of collection (3) is collected and carry out the preaeration mixing by pneumatic pump (29) and preaeration pipeline (7), air via pneumatic pump (29) is dispersed into small bubbles in the diffuser of aeration tank bottom, contact with sewage when these small bubbles rise from aeration tank bottom, make oxygen dissolution and cause that circulating fully of mixed solution mix.
When sequence batch (reaction cabinet (4) leaves unused, and collect dirty cabinet (3) water level when not being in " low liquid level ", macerator pump (10) starts, in sequence batch (reaction cabinet (4), carry the sewage of pulverizing through mixing, when collection dirty cabinet (3) water level rises to " high liquid level ", send the overflow guard signal, simultaneously outwards overflow (2) voluntarily, when collecting dirty cabinet water (3) potential drop to " low liquid level ", macerator pump (10) quits work.
Sequence batch (reaction cabinet (4) is used for biochemical reaction, precipitates and strains draining, is the core main body part of system.Be provided with into water, stirring aeration, precipitation, four operating modes of draining, the length of each operating mode time length and precedence are according to variations flexibly such as sewage character and effluent functions require, by PLC time variable control in the controlling box (30), move by the time and the order of predefined time and order or on-the-spot actual needs.According to sampling analysis, environment and the water distribution of sanitary sewage on the international airline transport-ship that adopts the gravity collection device and laboratory monitoring summary with feedback control, designing and typically handling operating mode under this environment is that aeration 240 minutes, quiescent settling were rejected about 30 minutes of sterilization in 60 minutes, and the batch processed cycle is about 6h.
When the water level that enters sequence batch (reaction cabinet (4) rises to " high liquid level ", macerator pump (10) stops feed flow, (aeration time is according to water quality and degradation effect setting to setting-up time for pneumatic pump (28) startup and air feed, be set at 240 minutes herein), aeration stops, enter quiescent setting state (being set at 60 minutes herein), reject pump (15) startup after reaching set(ting)value, supernatant liquor is discharged sequence batch (reaction cabinet (4), when water level is reduced to setting " liquid level " (5), reject pump (15) and stop discharging, enter the next cycle circulation.
Isolated clear water enters overflow-type apparatus for ultraviolet disinfection (21) and carries out sterilization and disinfection and handle from sequence batch (reaction cabinet (4), further kills germs such as thermotolerant coliform, virus in the discharge water.Dress ultraviolet quartz burner in the overflow-type apparatus for ultraviolet disinfection (21), the tubular type sterilizing unit of outer lining shelter-clad jacket structure for water, effluent stream is subjected to ultraviolet acute irradiation in the time of the outer water jacket of fluorescent tube, UV-lamp selects wavelength between 253.7-260.0nm.
When the sanitary sewage device has just been enabled the domestication of active sludge bacterial classification or met special water quality, only with biological degradation can not qualified discharge the time, the isolated clear water of sequence batch (reaction cabinet (4) is carried to membrane module unit (24) through transforming valve (16) (17), through further depositing in the clear water cabinet (25) behind the micro-filtration.The aperture of microfiltration membrane should less than
When test and Selection aperture: Φ 0.15～0.25 μ m, hold back best results.
Clear water after the processing is collected in the clear water cabinet (25), is disposed to outboard by emptying pump (19) by the PLC united and coordinating.
Reduce or arrhea under the situation when boats and ships pull in to shore to wait the sanitary sewage amount, device will enter the dormancy situation automatically.Carry out regular aeration to being stored in the sanitary sewage of collecting in cabinet (3) and the sequence batch (reaction cabinet (4), to keep its sludge activity.
Can pass through bacterial classification and treatment situation in sampling valve (6) (13) (22) the routine observation equipment between operation or resting stage.
Can pass through valve-off (9) when equipment is opened and inspect or cleaned, open valve (11) (14) (18), utilize emptying pump (19) and clear water pipeline (20) that equipment is carried out drainage and cleaning.
Claims (8)
1. a sequence batch (sewage treatment unit comprises the treatment unit body and is positioned at this external ultraviolet overcurrent sterilizer (21) and membrane module unit (24); The sanitary sewage device body by the dirty cabinet (3) of sewage collection, preface criticize intermittent reaction cabinet (4), and (25) three cabinets of clear water cabinet form; The collection dirt is provided with sewage inlet (1) cashier's office in a shop, and is provided with preaeration pipeline (7); Collecting dirty cabinet (3) is communicated with sequence batch (reaction cabinet (4) by macerator pump (10) and control valve (12); Be provided with aerating pipelines (8) in the sequence batch (reaction cabinet (4), pump (15) aspirates out the clear water that sequence batch (reaction cabinet (4) is handled out and by being collected in the clear water cabinet (25) behind ultra violet sterilizer (21), the external membrane module (24), the clear water that collect (25) in the clear water cabinet finally is disposed to outboard by residual sea water pump (19) by rejecting; It is characterized in that: described treatment unit by the dirty cabinet (3) of sewage collection, preface criticizes intermittent reaction cabinet (4) and clear water cabinet (25) is formed, and is furnished with ultraviolet overcurrent sterilizer (21) and external membrane module unit (24).
2. sequence batch (sewage treatment unit according to claim 1 is characterized in that: described preface is criticized and is provided with aerating pipelines (7) in the intermittent reaction cabinet (4).
3. sequence batch (sewage treatment unit according to claim 1 is characterized in that: be provided with preaeration pipeline (7) in the dirty cabinet of described collection (3).
4. sequence batch (sewage treatment unit according to claim 1 is characterized in that: described preaeration pipeline (7) and aerating pipelines (8) adopt the variable orifice aeration flexible pipe.
5. sequence batch (sewage treatment unit according to claim 1 is characterized in that: the dirty cabinet of described collection (3) is communicated with sequence batch (reaction cabinet (4) by macerator pump (10).
6. sequence batch (sewage treatment unit according to claim 1 is characterized in that: described sterilizer (21) is ultraviolet overcurrent sterilizer.
7. sequence batch (sewage treatment unit according to claim 1 is characterized in that: described membrane module (24) is external independent film assembly, and can select part in the treating processes.
8. sequence batch (sewage treatment unit according to claim 1 is characterized in that: described membrane module (24) is the column microfiltration membrane, and its aperture is between Φ 0.15～0.25 μ m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206139509U CN201915000U (en) | 2010-11-18 | 2010-11-18 | Sequencing batch type domestic sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206139509U CN201915000U (en) | 2010-11-18 | 2010-11-18 | Sequencing batch type domestic sewage treatment device |
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| Publication Number | Publication Date |
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| CN201915000U true CN201915000U (en) | 2011-08-03 |
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| CN2010206139509U Expired - Fee Related CN201915000U (en) | 2010-11-18 | 2010-11-18 | Sequencing batch type domestic sewage treatment device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482827A (en) * | 2013-09-29 | 2014-01-01 | 哈尔滨工程大学 | Marine built-in membrane bioreaction device |
| CN104591499A (en) * | 2015-01-28 | 2015-05-06 | 江苏南极机械有限责任公司 | Inland water ship domestic sewage sequencing batch biochemical treatment device |
| CN104671594A (en) * | 2015-01-28 | 2015-06-03 | 江苏南极机械有限责任公司 | Method for carrying out sequencing batch biochemical treatment on inland ship domestic sewage |
| CN105198172A (en) * | 2015-10-30 | 2015-12-30 | 山东航凯船舶科技有限公司 | Horizontal internal filtering type domestic sewage treatment device for ships |
| CN105967332A (en) * | 2016-06-28 | 2016-09-28 | 哈尔滨工程大学 | Denitrification and phosphorus removal synchronized membrane bioreactor process based ship domestic sewage treatment device and method |
| CN106315849A (en) * | 2015-07-10 | 2017-01-11 | 玄明环保科技（上海）有限公司 | Sequencing batch biofilm domestic wastewater treatment system |
-
2010
- 2010-11-18 CN CN2010206139509U patent/CN201915000U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103482827A (en) * | 2013-09-29 | 2014-01-01 | 哈尔滨工程大学 | Marine built-in membrane bioreaction device |
| CN103482827B (en) * | 2013-09-29 | 2015-12-02 | 哈尔滨工程大学 | Built-in membrane biological reaction apparatus peculiar to vessel |
| CN104591499A (en) * | 2015-01-28 | 2015-05-06 | 江苏南极机械有限责任公司 | Inland water ship domestic sewage sequencing batch biochemical treatment device |
| CN104671594A (en) * | 2015-01-28 | 2015-06-03 | 江苏南极机械有限责任公司 | Method for carrying out sequencing batch biochemical treatment on inland ship domestic sewage |
| CN104671594B (en) * | 2015-01-28 | 2016-04-06 | 江苏南极机械有限责任公司 | A kind of inland navigation craft sanitary sewage sequence criticizes biochemical processing method |
| CN106315849A (en) * | 2015-07-10 | 2017-01-11 | 玄明环保科技（上海）有限公司 | Sequencing batch biofilm domestic wastewater treatment system |
| CN105198172A (en) * | 2015-10-30 | 2015-12-30 | 山东航凯船舶科技有限公司 | Horizontal internal filtering type domestic sewage treatment device for ships |
| CN105967332A (en) * | 2016-06-28 | 2016-09-28 | 哈尔滨工程大学 | Denitrification and phosphorus removal synchronized membrane bioreactor process based ship domestic sewage treatment device and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Shijiu Marine Equipment Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Shanghai Shijiu Marine Equipment Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110803 Termination date: 20161118 |