CN102329056A - Marine sewage treatment integrated device on basis of biological moving beds - Google Patents

Marine sewage treatment integrated device on basis of biological moving beds Download PDF

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Publication number
CN102329056A
CN102329056A CN201110266466A CN201110266466A CN102329056A CN 102329056 A CN102329056 A CN 102329056A CN 201110266466 A CN201110266466 A CN 201110266466A CN 201110266466 A CN201110266466 A CN 201110266466A CN 102329056 A CN102329056 A CN 102329056A
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China
Prior art keywords
biological moving
moving bed
tank
water pump
biological
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Pending
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CN201110266466A
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Chinese (zh)
Inventor
全燮
秦四飞
张耀斌
师永健
陈硕
赵慧敏
于洪涛
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN201110266466A priority Critical patent/CN102329056A/en
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  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention relates to a marine sewage treatment integrated device on the basis of biological moving beds, which comprises a grating, a regulating basin, two stages of biological moving beds, a sedimentation tank, a backwashing water tank, an external membrane module, a reagent bucket and an ultraviolet disinfector. Sewage sequentially enters the regulating basin, the two stages of biological moving beds and the sedimentation through the grating. Supernatant fluid can be disinfected by ultraviolet rays and be directly discharged and can also be disinfected to be reused as recycled water after entering the membrane module. The external membrane module is connected with the backwashing water tank and can be used for effectively preventing a membrane from being blocked. The ultraviolet disinfector not only can be arranged behind the sedimentation tank, but also can be arranged behind the membrane module so as to meet different drainage requirements. The membrane module is kept working normally by regular backwashing and medicine washing. Due to the adoption of the marine sewage treatment integrated device on the basis of biological moving beds, the biodegrability of organic matter is effectively strengthened, effluent can directly reach the standard to be discharged after passing through the sedimentation tank, and the high efficiency degradation on marine domestic wastewater is realized. The marine sewage treatment integrated device has simple and reasonable structure and good working performance. The defect of short service life of the membrane module is overcome. Compared with a like reactor, the marine sewage treatment integrated device has obviously improved sewage treatment capability.

Description

WWT integrated apparatus peculiar to vessel based on biological moving bed
Technical field
The present invention relates to environmental protection equipment, environmental protection equipment particularly peculiar to vessel.
Background technology
Along with developing on an unprecedented scale of shipping-trade and ocean exploitation, the environmental pollution of ocean is more and more serious, and human protection to the ocean is pay attention to day by day also.The Sewage from Ships pollution problem that is brought by the ocean has also caused human showing great attention to.The eutrophication material that contains a large amount of bacteriums, parasite even virus and high density in the Sewage from Ships; The unprocessed water surrounding that is discharged into arbitrarily of these untreated sewages will make organism in water and human infection, harm biology and human health; After nutritive salt gets into water surrounding in addition; When its content reaches 0.01mg/L, just can make growth of algae excessive ground and breeding, eutrophication appears.The existence of suspended solids in the sewage in addition of the destruction of the natural purification process of water surrounding will produce the resource in bathing beach and fishing ground and seriously influence.And sewage may bring alien species to ocean environment, destruction marine ecology balance.On the other hand, because the shortage of oceangoing vessel Freshwater resources with recycle after the sanitary sewage disposal, can solve the shortage of fresh water problem greatly.Therefore, to the features of pollution and the influence of Sewage from Ships, carrying out systematize research and providing the control corresponding countermeasure is an important content.
Owing to must formally implement " MARPOL73/78 pollution convention " from January 1st, 2010, sewage discharge is had higher requirement.In the new emission standard not only to BOD 5And the COD (BOD that has higher requirement 5Change into≤25mg/L by≤50mg/L; Former no COD emission request changes into≤125mg/L at present; Suspended solids total amount (S.S) geometrical mean is changed into≤35mg/L by≤50mg/L; Coliform (M.O.N) geometrical mean also by≤250/100mL bring up to≤100/100mL), original waste disposal plant has been difficult to satisfy new sewage drainage standard, and based on boats and ships spatial finiteness; Freshwater resources in short supply, how to make a part of waste water as in the water reuse also be a difficult problem of handling at present always.
Adopt activated sludge processes in the bioremediation at present, yet activated sludge process has difficult management, processing efficiency is low more, and sludge output is high, is prone to shortcomings such as sludge bulking, water outlet muddiness.Biological moving bed is built-in with 30%~60% suspending carrier, adheres to the large number of biological film on the suspending carrier, not only can overcome above shortcoming preferably, and has nitration denitrification function simultaneously, can effectively remove eutrophy elements such as nitrogen, phosphorus.Membrane module not only can make water outlet limpider, and can remove organism such as COD, BOD.Uv steriliser can effectively be removed mikrobes such as poisonous and harmful virus, bacterium in the sewage, further improves effluent quality, makes water outlet reach middle water reuse standard.
Summary of the invention
In order to overcome the problem that exists in the prior art; The purpose of this invention is to provide a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed; This device can not only satisfy up-to-date international anti-pollution convention discharge index requirement; Water reuse standard in satisfying is again alleviated Freshwater resources present situation in short supply on the ship.
The technical scheme that the present invention adopts is: a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed, it is provided with equalizing tank, is provided with grid in the ingress of this equalizing tank.Equalizing tank is provided with water pump, be connected through one import among pipeline and the two-stage biological moving-bed, and the outlet of another biological moving bed links to each other with the import of settling tank.Be respectively equipped with aeration tube and air pump inside and outside these two biological moving beds.The bottom of equalizing tank, biological moving bed, settling tank links to each other and the water-in of remittance and first water pump of back connection, and the water outlet of this water pump also is provided with blow-off pipe.The water outlet of settling tank links to each other with valve and this water pump.This exit of pump also links to each other through the upper end of first flow meter with the external membrane assembly.And the lower end of external membrane assembly is connected with the backwash water tank through valve.The backwash water tank is provided with second water pump, and this water pump is connected with the lower end of external membrane assembly through the 3rd under meter.The water outlet of backwash water tank links to each other with the import of ultraviolet disinfector through the 3rd water pump.The lower end of external membrane assembly also is connected with the upper end of settling tank through second under meter.An interface of medicament bucket through valve link to each other with the upper end of external membrane assembly and another interface through the lower ends of valve and external membrane assembly.Total system is provided with the PLC electric control box.Grid, two-stage biological moving-bed and settling tank top are respectively equipped with manhole.Grid outer setting cleanout opening and riser.The long-width ratio of biological moving bed is 1: 2~1: 4.Biological moving bed is built-in with suspending carrier, and bottom and top are equipped with graticule mesh respectively.Be respectively equipped with liquid level switch in equalizing tank, settling tank and the backwash water tank.Ultraviolet disinfector is connected to the water outlet of backwash water tank through water pump.Ultraviolet disinfector also can be connected to the bottom of settling tank through water pump.
Compared with prior art, the present invention has following beneficial effect:
1, processing efficiency is high.This device biological treatment part adopts biological moving bed, biological moving bed to be built-in with 30%~60% suspending carrier, and the present invention adopts wetting ability better; The efficient compound bio suspending carrier that adsorptive power is stronger has improved the adhesive ability of mikrobe, makes living weight increase the microbial film thickening; Owing to adhere to a large amount of mikrobes on the suspending carrier, make mikrobe variation mutually, biological food chain length; And long mikrobe generation time that can survive, can carry out nitrated, denitrification simultaneously, processing efficiency is high.In addition, it is few also to have a sludge discharge, and the sludge treatment expense is low; System's shock resistance is strong, wide accommodation; Be easy to advantages such as operational management.
2, reasonable in design.This device is provided with riser, and to the impact of device, grid can effectively be removed more large-scale impurity such as the suspended substance that is difficult for microbiological deterioration and solid in the time of can avoiding flooding velocity big; Two-stage biological moving-bed long-width ratio 1: 2~1: 4 respectively can prevent that suspending carrier from gathering heap at the biological moving bed end, guarantees that floating stuffing has fluidized state preferably; Be provided with settling tank behind the biological moving bed, can improve effluent quality, reduce concentration of suspension; Shore pipe and dual-purpose (draining, spoil disposal) water pump, regularly spoil disposal are set under equalizing tank, two-stage biological moving-bed and the settling tank; The external membrane assembly not only can make water outlet limpider, and can further remove organism such as COD, BOD, and the settling tank water outlet can directly be discharged without membrane module, but membrane component and prolong work-ing life, and in addition, the external membrane assembly is convenient to change, and is easy to maintenance; After uv steriliser both can be positioned over settling tank, can be positioned over membrane module again after, make water outlet reach international anti-pollution convention emission standard or middle water reuse standard.
3, this device adopts PLC control and liquid level switch, and level of automation is high, satisfies 24h robotization control requirement on the ship, saves manpower.
Hereinafter combines accompanying drawing and the present invention is done further detailed explanation.
Fig. 1 is a kind of WWT integrated apparatus system diagram peculiar to vessel based on biological moving bed of the present invention.
Fig. 2 is a kind of WWT integrated apparatus front view peculiar to vessel based on biological moving bed of the present invention.
Fig. 3 is the vertical view of Fig. 2.
Fig. 4 is the left view of Fig. 2.
Fig. 5 is the present invention a kind of WWT integrated apparatus external membrane assembly peculiar to vessel and sterilizing unit figure based on biological moving bed.
Among the figure: 1, grid, 2, equalizing tank, 4a, biological moving bed, 4b, biological moving bed, 5, settling tank; 6, aeration tube, 7, air pump, 9, the under meter group, 10, membrane module, 11, the backwash water tank; 14, ultraviolet disinfector, 15, the medicament bucket, 3,8,12,13, water pump, 16, the PLC electric appliance control box, 17,18,19, liquid level switch; 20, manhole, 21, cleanout opening, 22, overflow weir, F1~F16, valve.
Embodiment
Because the boats and ships space is limited, the present invention is compact to design to be concentrated, and in main body, has concentrated major equipments such as equalizing tank 2, biological moving bed 4a, biological moving bed 4b, settling tank 5.Be provided with grid 1 in the water inlet of equalizing tank 2, pending sewage is in grid 1 flows automatically to equalizing tank 2.Equalizing tank 2 built-in water pumps 3 and liquid level switch 17, sewage gets into two stage biological moving- bed 4a, 4b successively under water pump 3 and liquid level switch 17 actings in conjunction.Biological moving bed 4a, 4b long-width ratio are 1: 2~1: 4, built-in aeration tube 6a, 6b, external air pump 7a, 7b.The water outlet of handling through biological moving bed 4a, 4b flows into settling tank 5 certainly.Grid 1, two-stage biological moving-bed 4 and settling tank 5 tops are respectively equipped with manhole 20.On main body, be provided with cleanout opening 21 and riser 22 near grid 1 place.Liquid level switch 18 is set in the settling tank 5.Supernatant directly discharges behind water pump 8 water outlets and ultraviolet disinfector 14 sterilization and disinfection.Perhaps through water pump 8, under meter 9.1 gets into external membrane assembly 10, gets into backwash water tank 11 at last, and is available as middle water by the rising pipe discharge through ultraviolet disinfector 14 sterilization and disinfection through pump 13, to satisfy different drainage requirements.Ultraviolet disinfector 14 can be connected to the bottom of settling tank 5 through water pump 8.Ultraviolet disinfector 14 also can be connected to the water outlet of backwash water tank 11 through water pump 13.Backwash water tank 11 built-in backwash water pumps 12, liquid concentrator gets into settling tank 5 through under meter 9.2, can regularly wash membrane module 10, can prevent effectively that the film of external membrane assembly 10 from blocking.Medicament bucket 15 and external membrane assembly one.Full device regularly carries out backwash and medicine to be washed, and keeps the membrane module works better.Total system is provided with PLC electric control box 16 and controls automatically.
Normal workflow of the present invention is following: close F1, F2, F3, F7, F8, F9; Open all the other valves, sewage gets into grid 1 through water-in, flows automatically to equalizing tank 2; Get into biological moving bed 4a, 4b successively through water pump 3 and liquid level switch 17 actings in conjunction; Water outlet is from flowing into settling tank 5, and afterwards, supernatant has two discharging approach: one of which is directly discharging (disinfection by ultraviolet light 14); It is two for getting into membrane module 10, after ultraviolet disinfector 14, as middle water reuse.
Backwash workflow of the present invention is following: close F1~F13, open F14, F15, F16 backwash water through water pump 12 through under meter 9.3, get into external membrane assembly 10 then, get into settling tank 5 at last, the backwash end-of-job.
It is following that medicine of the present invention is washed workflow: open F7, F8, F9 and F14, F15, F16 closes all the other valves, and medicament gets into membrane modules 10 from medicament bucket 15, finally gets into medicament bucket 15 again, recycles.
Mud discharging workflow of the present invention is following: open F1, F2 and F3, close all the other valves, be with the water outlet of blow-off pipes regularly to discharge through water pump 8.

Claims (8)

1. WWT integrated apparatus peculiar to vessel based on biological moving bed; It is characterized in that: be provided with equalizing tank (2); Ingress at this equalizing tank (2) is provided with grid (1); Said equalizing tank (2) is provided with water pump (3) and is connected with the import of biological moving bed (4a) through pipeline, and biological moving bed (4a) links to each other with the bottom of biological moving bed (4b), and the outlet of this biological moving bed (4b) links to each other with the import of settling tank (5); Be respectively equipped with aeration tube (6a), (6b) and air pump (7a), (7b) inside and outside described biological moving bed (4a), (4b); The bottom of equalizing tank (2), biological moving bed (4), settling tank (5) links to each other and the water-in of remittance and back connection water pump (8), and the water outlet of this water pump (8) is also established blow-off pipe; The water outlet of said settling tank (5) links to each other with water pump (8); Described water pump (8) outlet also links to each other through the upper end of under meter (9.1) with external membrane assembly (10); And the lower end of external membrane assembly (10) is connected with backwash water tank (11); Be provided with water pump (12) in the said backwash water tank (11), this water pump (12) is connected through the lower end of under meter (9.3) with external membrane assembly (10); The water outlet of said backwash water tank (11) links to each other through the import of water pump (13) with ultraviolet disinfector (14); The lower end of said external membrane assembly (10) also is connected through the upper end of under meter (9.2) with settling tank (5); An interface of medicament bucket (15) links to each other and the lower ends of another interface and external membrane assembly (10) with external membrane assembly (10) upper end; Total system is provided with PLC electric control box (16).
2. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1 is characterized in that: be respectively equipped with liquid level switch (17), (18) and (19) in equalizing tank (2), settling tank (5) and the backwash water tank (11)
3. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1 is characterized in that: described grid (1), two-stage biological moving-bed (4a), (4b) and settling tank (5) top are respectively equipped with manhole (20).
4. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1 is characterized in that: described grid (1) outer setting cleanout opening (21) and riser (22).
5. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1, it is characterized in that: described biological moving bed (4a), (4b) long-width ratio are 1: 2~1: 4.
6. a kind of WWT integrated apparatus peculiar to vessel according to claim 1 based on biological moving bed, it is characterized in that: described biological moving bed is built-in with suspending carrier, and bottom and top are equipped with graticule mesh respectively.
7. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1, it is characterized in that: described ultraviolet disinfector (14) is connected to the water outlet of backwash water tank (11) through water pump (13).
8. a kind of WWT integrated apparatus peculiar to vessel based on biological moving bed according to claim 1 is characterized in that: described ultraviolet disinfector (14) also can be connected to the bottom of settling tank (5) through water pump (13).
CN201110266466A 2011-09-08 2011-09-08 Marine sewage treatment integrated device on basis of biological moving beds Pending CN102329056A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN114180765A (en) * 2021-12-06 2022-03-15 哈尔滨工程大学 Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343130A (en) * 2008-01-23 2009-01-14 浙江四通环境工程有限公司 Integrated device for treating and recycling wastewater
CN101402487A (en) * 2008-11-18 2009-04-08 北京科技大学 Water treatment system in two-stage moving bed biomembrane reactor
CN201560158U (en) * 2009-11-24 2010-08-25 宇星科技发展(深圳)有限公司 Water recycling integrated device in membrane bioreactor
CN101870542A (en) * 2010-06-19 2010-10-27 大连理工大学 Multistage moving bed biomembrane reactor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101343130A (en) * 2008-01-23 2009-01-14 浙江四通环境工程有限公司 Integrated device for treating and recycling wastewater
CN101402487A (en) * 2008-11-18 2009-04-08 北京科技大学 Water treatment system in two-stage moving bed biomembrane reactor
CN201560158U (en) * 2009-11-24 2010-08-25 宇星科技发展(深圳)有限公司 Water recycling integrated device in membrane bioreactor
CN101870542A (en) * 2010-06-19 2010-10-27 大连理工大学 Multistage moving bed biomembrane reactor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN114180765A (en) * 2021-12-06 2022-03-15 哈尔滨工程大学 Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment

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Application publication date: 20120125