CN203807297U - Sewage treatment and sea water desalting device - Google Patents

Sewage treatment and sea water desalting device Download PDF

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Publication number
CN203807297U
CN203807297U CN201420095132.2U CN201420095132U CN203807297U CN 203807297 U CN203807297 U CN 203807297U CN 201420095132 U CN201420095132 U CN 201420095132U CN 203807297 U CN203807297 U CN 203807297U
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CN
China
Prior art keywords
osmosis membrane
sewage
sea water
sea
membrane component
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Expired - Fee Related
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CN201420095132.2U
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Chinese (zh)
Inventor
严滨
李元高
廖文超
曾孟祥
徐苏
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Xiamen University of Technology
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Xiamen University of Technology
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Priority to CN201420095132.2U priority Critical patent/CN203807297U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Abstract

The utility model discloses a sewage treatment and sea water desalting device which comprises a forward osmosis membrane component, an aerobic bioreactor and a reverse osmosis membrane component, wherein the forward osmosis membrane component is arranged at the external part of the aerobic bioreactor, a forward osmosis membrane is mounted in the forward osmosis membrane component to divide the forward osmosis membrane component into two parts, wherein one part is a sea water side, and the other part is a sewage side; the sea water outlet of the sea water side is connected with the reverse osmosis membrane component; both the inlet and the outlet of the sewage side are connected with the aerobic bioreactor. The sewage treatment and sea water desalting device has the advantages that the forward osmosis membrane component is arranged at the external part of the forward osmosis membrane component, so that activated sludge or various microorganisms in the aerobic bioreactor is/are not adhered to the forward osmosis membrane component, therefore, the membrane pollution can be reduced; moreover, the higher shear velocity is provided by a pump in the filtering process, the effluent water flux is more stable, and the sewage treatment and sea water desalting device is suitable for sewage treatment systems on the sea sides.

Description

A kind of sewage disposal and sea water desalinating plant
Technical field
The utility model relates to the technical field of water treatment, espespecially a kind of sewage disposal and sea water desalinating plant.
Background technology
In recent years, the develop rapidly of China's industry has promoted the rapid growth of national economy on the one hand, also to environment, has brought unprecedented heavy burden on the other hand.Especially aspect water resources, China's current situation is severe, and urban water consumption and wastewater discharge increase severely, and water source, most cities service discharge is day by day not enough, and various places water surrounding worsens increasingly.Traditional sewage water treatment method, due to factors, more and more can not adapt to the requirement of world's most countries to sewage disposal under current situation.Under this background, various countries experts and scholars are devoted to the research of Novel sewage treatment process.Along with progressively going deep into that China researchs and develops for membrane bioreactor, the application at home of this sewage treatment process is extensively got up gradually.
Existing aerobic membrane bioreactor is mainly to take the techniques such as micro-filtration, ultra filtering reverse osmosis as main, but these methods are subject to the impact of seepage water pressure, and its enrichment cycles of concentration is limited, and energy consumption is also high.
On the other hand, in the process of Development of Marine economy, sea water desaltination receives people's concern day by day.Sea water desaltination utilizes sea water desalinization to produce fresh water.Method for desalting seawater used has seawater freezing method, electroosmose process, distillation method, reverse osmosis method now.The reverse osmosis method of application reverse osmosis membrane advantage simple with its equipment, that be easy to maintenance and EM equipment module dominates the market rapidly at present, and progressively replacing distillation method becomes most widely used method.For reverse osmosis unit is normally moved, brine side pressure must be higher than osmotic pressure, and generally, within the scope of 4~7MPa, running cost is to be mainly consequent energy consumption cost.
In order to reduce the energy consumption of reverse osmosis seawater desalting, someone has developed the technology of sea water desaltination and sewage disposal coupling, Chinese patent application CN102276113A for example, this technology is utilized the salt error effect of seawater side, by forward osmosis membrane bioreactor, sewage is processed, seawater is diluted simultaneously, so just can by compared with the reverse osmosis membrane of low pressure the seawater after to dilution further desalinate processing, thereby reduce energy consumption.
Yet, before above-mentioned patent, the forward osmosis membrane bioreactor of case is built-in integral structure, its membrane module is placed in inside reactor, mud and various microorganism are more easily attached to film surface or enter membrane pores inside, permeability rate is declined and cause film to pollute, therefore the film contamination phenomenon of integral type is more obvious.Although can reduce film by aeration, pollute, be subject to the impact of the factors such as aeration, mud, water outlet is difficult for stable, and higher to the requirement of operational condition.
Utility model content
It is a kind of when sewage is carried out to advanced treatment that technical problem to be solved in the utility model is to provide, the external placed type forward osmosis aerobic membrane bioreactor can low pressure desalinizing seawater, and it is stable and can reduce film and pollute.
For solving the problems of the technologies described above, technical solution of the present utility model is:
Sewage disposal and a sea water desalinating plant, comprise forward osmosis membrane module, aerobe reactor and reverse osmosis membrane assembly; This forward osmosis membrane module is arranged on the outside of this aerobe reactor, in this forward osmosis membrane module, forward osmosis membranes is installed forward osmosis membrane module is divided into two portions, wherein a part is seawater side, on sidewall, have sea intake and seawer outlet, another part is sewage side, has sewage import and sewage outlet on sidewall; This sea intake is connected with sea-water pump by pipeline, and this seawer outlet is connected with described reverse osmosis membrane assembly by pipeline; This sewage import is connected with recycle pump and described aerobe reactor by pipeline, and this sewage outlet is connected with aerobe reactor by reflux line.
Described forward osmosis membranes assembly pattern can be rolled membrane module.
Adopt after such scheme, because the utility model is external outside at aerobe reactor by forward osmosis membrane module, membrane module is not vulnerable to adhering to of the interior active sludge of bio-reactor or various microorganisms, therefore can reduce film and pollute; And without aeration, structure is simpler, cost is lower; Filtration procedure provides higher shearing flow velocity by pump (recycle pump and sea-water pump), to film, can play souring, reduce film and pollute, so effluent flux is more stable, and the Sewage treatment systems that is adapted at seashore is used.
In addition, the utility model also tool have the following advantages:
1, sewage treating efficiency is high.Aerobe reactor and forward osmosis membranes by sewage have formed Sewage treatment systems, and this system, due to the separated crown_interception of film, has formed membrane bioreactor.Similar with the membrane bioreactor that adopts conventional micro-filtration or ultra-filtration membrane to build, this reactor has the same advantage of membrane bioreactor.Comprise the advantages such as sludge concentration is high, and processing efficiency is high, and floor space is little, level of automation height.Simultaneously it just permeates by FO() effluent quality far above the water quality of ultrafiltration water outlet, penetrate into seawater side.
2, facility investment is low.The water outlet of aerobic reactor enters seawater rear flank, diluted concentration of seawater, the required pressure decreased of sea water desaltination, simplifies the sea water desalting equipment complete processing under the more conventional 7-10Mpa of equipment, equipment declines in the requirement of wall thickness, the aspect such as anticorrosive, and overall cost is low.
3, operation energy consumption is low, and running cost is low.The recycle pump of forward osmosis both sides only provides the circulation of seawater and sewage, without special pressure requirement; Under low pressure situation, effective operation has reduced running cost.
4, sea water desaltination pressure is low.Fresh water constantly enters seawater side by the sewage side of FO, and the concentration of seawater of seawater side is reduced.Suitable processing parameter can make salt concn in seawater be reduced to 1% left and right, thereby can under 2-3Mpa pressure, complete desalting process.
In a word, this utility model has effectively been processed the sewage of offshore on the one hand, can low pressure carry out sea water desaltination simultaneously, reduces cost of sewage disposal, has clear superiority.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
What the utility model disclosed is a kind of sewage disposal and sea water desalinating plant, as shown in Figure 1, is preferred embodiment of the present utility model, and it comprises forward osmosis membrane module 1, aerobe reactor 2 and reverse osmosis membrane assembly 3.Wherein:
Described forward osmosis membrane module 1 is arranged on the outside of described aerobe reactor 2, in this forward osmosis membrane module 1, forward osmosis membranes 11 is installed, this forward osmosis membranes 11 is divided into two portions by forward osmosis membrane module 1, wherein a part is seawater side, on sidewall, have sea intake and seawer outlet, another part is sewage side, has sewage import and sewage outlet on sidewall; This sea intake can be connected with sea-water pump 4 and seawater tank 5 by pipeline, and this seawer outlet is connected with described reverse osmosis membrane assembly 3 by pipeline, and the concentrated solution outlet of this reverse osmosis module 3 can be connected with seawater tank 5 by concentrated pipeline; Described sewage import is connected with recycle pump (not shown) and aerobe reactor 2 by pipeline, and described sewage outlet is connected with aerobe reactor 2 by reflux line.
Principle of work of the present utility model is: seawater enters forward osmosis membranes 11 1 sides in forward osmosis membrane module 1 through sea-water pump 4, and meanwhile, the sewage in aerobe reactor 2 enters the opposite side of film by recycle pump; Under the effect of salt error, the water molecules of dilute side enters the side that salinity is high, from sewage side, enters seawater side, and when sewage enters seawater side, tunicle purifies, and causes seawater to be diluted simultaneously; Seawater after dilution is further desalinated through reverse osmosis membrane assembly 3, produces desalination water, and strong brine flows back to marine.
Adopt above-mentioned positive osmosis device concentrated for feed liquid, have cycles of concentration high, raw material sources are abundant, low cost and other advantages.Adopted the aerobic treatment process of forward osmosis membranes, formed aerobic membrane bioreactor, its sludge concentration improves, and processing efficiency improves, and effluent quality is good.
Further, described forward osmosis membranes assembly pattern can be rolled membrane module.
The above, be only preferred embodiment of the present utility model, is not used for limiting the scope that the utility model is implemented.Therefore variation or the modification in every case done according to claim of the present utility model and specification sheets, within all should belonging to the scope that the utility model patent contains.

Claims (2)

1. sewage disposal and a sea water desalinating plant, is characterized in that: comprise forward osmosis membrane module, aerobe reactor and reverse osmosis membrane assembly; This forward osmosis membrane module is arranged on the outside of this aerobe reactor, in this forward osmosis membrane module, forward osmosis membranes is installed forward osmosis membrane module is divided into two portions, wherein a part is seawater side, on sidewall, have sea intake and seawer outlet, another part is sewage side, has sewage import and sewage outlet on sidewall; This sea intake is connected with sea-water pump by pipeline, and this seawer outlet is connected with described reverse osmosis membrane assembly by pipeline; This sewage import is connected with recycle pump and described aerobe reactor by pipeline, and this sewage outlet is connected with aerobe reactor by reflux line.
2. a kind of sewage disposal according to claim 1 and sea water desalinating plant, is characterized in that: described forward osmosis membranes assembly pattern is rolled membrane module.
CN201420095132.2U 2014-03-04 2014-03-04 Sewage treatment and sea water desalting device Expired - Fee Related CN203807297U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420095132.2U CN203807297U (en) 2014-03-04 2014-03-04 Sewage treatment and sea water desalting device

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Application Number Priority Date Filing Date Title
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105776519A (en) * 2016-03-17 2016-07-20 厦门理工学院 Method for treating recycled livestock and poultry breeding wastewater by aid of forward osmosis membrane bioreactors
CN106957086A (en) * 2015-10-16 2017-07-18 光州科学技术院 The positive infiltration of pressure auxiliary and reverse osmosis mixing sea water desalinating unit
CN110272171A (en) * 2019-07-25 2019-09-24 江南大学 A kind of sewage-treatment plant and method of synchronous recycle-water and electric energy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106957086A (en) * 2015-10-16 2017-07-18 光州科学技术院 The positive infiltration of pressure auxiliary and reverse osmosis mixing sea water desalinating unit
CN105776519A (en) * 2016-03-17 2016-07-20 厦门理工学院 Method for treating recycled livestock and poultry breeding wastewater by aid of forward osmosis membrane bioreactors
CN110272171A (en) * 2019-07-25 2019-09-24 江南大学 A kind of sewage-treatment plant and method of synchronous recycle-water and electric energy

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140903

Termination date: 20170304

CF01 Termination of patent right due to non-payment of annual fee