DK169719B1 - Purification system with filter for separating active sludge and purified water in a process tank - Google Patents
Purification system with filter for separating active sludge and purified water in a process tank Download PDFInfo
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- DK169719B1 DK169719B1 DK139092A DK139092A DK169719B1 DK 169719 B1 DK169719 B1 DK 169719B1 DK 139092 A DK139092 A DK 139092A DK 139092 A DK139092 A DK 139092A DK 169719 B1 DK169719 B1 DK 169719B1
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- Prior art keywords
- filter
- purification system
- water
- process tank
- designed
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 43
- 238000000034 method Methods 0.000 title claims description 26
- 238000000746 purification Methods 0.000 title claims description 17
- 239000008213 purified water Substances 0.000 title claims description 8
- 239000010802 sludge Substances 0.000 title description 17
- 238000001914 filtration Methods 0.000 claims description 15
- 239000012528 membrane Substances 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 238000005192 partition Methods 0.000 claims 1
- 239000008237 rinsing water Substances 0.000 claims 1
- 238000005352 clarification Methods 0.000 description 9
- 244000005700 microbiome Species 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000005791 algae growth Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000013601 eggs Nutrition 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1257—Oxidation ditches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/39—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with hollow discs side by side on, or around, one or more tubes, e.g. of the leaf type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/885—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices with internal recirculation through the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
- B01D29/94—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes
- B01D29/945—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for discharging the filter cake, e.g. chutes for continuously discharging concentrated liquid
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
i 5 DK 169719 B1in 5 DK 169719 B1
Renseanæg med filter til separering af aktivt slam og renset vand i en procestank.Purification eggs with filter for separating active sludge and purified water in a process tank.
Opfindelsen angår et renseanlæg af den i krav l's indledning angivne art.Det er velkendt at udføre biologisk rensning ved anvendelse af aktiveret slamanlæg.Ved aktivt slam forstås kolonier af mikroorganismer, -som foretager rensning af spildevand for organisk materiale og for-10 skellige næringssalte.BACKGROUND OF THE INVENTION It is well known to carry out biological purification using activated sludge plant. Active sludge is understood to mean colonies of microorganisms which conduct wastewater treatment of organic matter and various nutrient salts.
I et aktiveret slamanlæg vil blandingen af vand og mikroorganismer (aktivt slam) blive holdt i bevægelse,og efter en vis tid vil det forlade procestanken.In an activated sludge plant, the mixture of water and microorganisms (active sludge) will be kept moving and after a certain time it will leave the process tank.
15 For ikke at udlede forurenende aktivt slam til naturen og for at beholde de nyttige mikroorganismer i procestanken,er det nødvendigt at adskille det rensede vand og det aktive slam, for herefter at lede det rensede vand til recipienten eller yderligere rensning og returnere mikroorganismerne til procestanken.Hidtil har dette været gjort ved brug af en såkaldt 20 efterklaringstank,hvori mikroorganismerne sedimenterer til bunden og herfra skrabes til en pumpe og pumpes tilbage til procestanken.Det klarede vand løber fra efterklaringstankens overflade til slutrensning og ud i recipienten.15 In order not to discharge pollutant active sludge to nature and to retain the useful microorganisms in the process tank, it is necessary to separate the purified water and the active sludge, to then direct the purified water to the recipient or further purification and return the microorganisms to the process tank. So far, this has been done using a so-called 20 clarification tank in which the microorganisms settle to the bottom and from there scrap to a pump and pump back to the process tank. The clarified water flows from the surface of the clarification tank to final purification and into the recipient.
25 Denne løsning fungerer som regel tilfredsstiIlende,men anlægsprisen for en sådan efterklaringstank udgør ofte så stor en del af den samlede pris for renseanlægget,at prisen for en efterklaringstank ikke står mål med funktionen.Derudover kan en sådan efterklaringstank fungere uhensigtsmæssig, idet stor vandtilstrømning eller gasudvikling i efter-iO klaringstanken eller dannelsen af let slam kan medføre at aktivt slam ledes med det klarede vand ud i recipienten.25 This solution usually works satisfactorily, but the installation cost for such a clarification tank is often such a large part of the total cost of the purification plant that the price of a clarification tank does not match the function. In addition, such a clarification tank can work inappropriately, since a large flow of water or gas evolution in the after-i clarification tank or the formation of light sludge may cause active sludge to be discharged with the clarified water into the recipient.
Opfindelsen har derfor til formål at angive et renseanlæg,hvormed 15 efterklaringstanken kan undlades.It is therefore an object of the invention to provide a purification plant with which the clarification tank can be omitted.
Ved den her beskrevne opfindelse opnås ikke blot besparelsen ved en efterklaringstank og efterklaringstankens uhensigtsmæssige driftsforhold men også muligheden for at øge slamkoncentrationen i procestanken og 2 DK 169719 B1 dermed at gøre størrelsen af procestanken mindre.Den her beskrevne opfindelse vil væsentligt begrænse anlægsudgifterne til renseanlæg for spildevand.The invention described here achieves not only the savings of a clarification tank and the disadvantageous operating conditions of the clarification tank, but also the possibility of increasing the sludge concentration in the process tank and thereby reducing the size of the process tank. The invention described here will substantially reduce the cost of wastewater treatment plants. .
5 Dette formål opnås med de i krav 1 kendetegnende del anvivne foran staltninger.This object is achieved with the prior art features of claim 1.
Det har hidtil været vanskeligt at integrere en sedimenteringsindretning i en procestank,idet vandet i en procestank typisk strømmer med ganske 10 høje hastigheder i intervallet 0,2 til 0,5 m pr sekund.Et anmeldt dansk patent med undertegnede som opfinder angår indbygning af en separeringsenhed i en procestank med sedimentation som princip,hvorimod denne opfindelse vedrørende separering bygger på filtrering som princip.So far, it has been difficult to integrate a sedimentation device into a process tank, since the water in a process tank typically flows at quite 10 high speeds in the range of 0.2 to 0.5 m per second. A Danish patent with the undersigned inventor relates to incorporation of a separating unit in a process tank with sedimentation as principle, whereas this invention on separation is based on filtration as principle.
15 Ved filtrering undgås de driftsmæssige uhensigtsmæssigheder ved sedimentationen ligesom øget slamkoncentration i procestanken bliver mulig.15 By filtration, the operational inconveniences of sedimentation are avoided and increased sludge concentration in the process tank becomes possible.
Vandet i det aktive slam i procestanken drives gennem filteret påtvunget 20 af et overordnet hydrostatisk tryk over hele procestanken.Det overordnede hydrostatiske tryk på procestanken kan etableres ved at det filtrerede vand efter passage af en evt. returskyl letank ledes over en overfaldskant, som herved styrer hydraulikken i systemet (se figur 1).The water in the active sludge in the process tank is driven through the filter applied by an overall hydrostatic pressure over the entire process tank. The overall hydrostatic pressure on the process tank can be established by passing the filtered water after passage of an evaporated water tank. return flush light tank is passed over an overflow rim, thereby controlling the hydraulics of the system (see Figure 1).
25 Filtrering af aktivt slam har hidtil været umuliggjort pga.den hurtige tilstopning af filteret.Denne opfindelse løser imidlertid problemerne med sådanne tilstopninger af filteret.Filtertilstopningen undgås ved følgende metoder: 30 A.Det aktive slam,hvori filteret er nedsænket påtvinges en hastighed,som herved renser filteret,se figur 1.Denne hastighed kan påtvinges ved forskellige indretninger oftest omrørerpropeller,rotorer eller turbiner.-For at sikre opblanding af det suspenderede stof (mikroorganismer) opereres som regel med hastigheder fra 0,2 til 0,5 m/s.Evt. dannet 35 filterkage på filteret vil blive skyllet af,af den forbipasserende væske,hvorved filteret bliver selvrensende.25 Active sludge filtration has so far been impossible due to rapid clogging of the filter.This invention, however, solves the problems of such clogging of the filter.The filter clogging is avoided by the following methods: 30 A.The active sludge in which the filter is submerged is forced at a rate which This cleans the filter, see Figure 1.This speed can be applied to various devices, most often agitator propellers, rotors or turbines. -To ensure mixing of the suspended matter (microorganisms) is usually operated at speeds from 0.2 to 0.5 m / s. .Possibly. formed filter cake on the filter will be rinsed off, by the passing liquid, thereby filtering itself.
B.Væskens hastighed øges langs filteret ved at vædsken fortrænges af filteret eller ved at vandstrømningsarealet indsnævres rundt om 3 DK 169719 B1 filteret(se figur 3).Ved nedsænkning af en filterenhed vil vandhastigheden pga. den fortrængte væskemængde stige omkring filteret.Her kan . vandhastigheden yderligere øges ved at anbringe flere 5 filterenheder i en kanalstrømning afgrænset af vægge (se figur 3),herved vil selve strømningstværsnitsarealet indsnævres som følge af filterenhedernes udstrækning,hvorved vandhastigheden vil øges.Den øgede vandhastighed vil øge selvrensningen af filteret.B. The speed of the liquid increases along the filter by displacing the liquid by the filter or by narrowing the water flow area around the filter (see Figure 3). By immersing a filter unit, the water velocity due to the displaced liquid volume will increase around the filter. the water velocity is further increased by placing more 5 filter units in a channel flow bounded by walls (see Figure 3), thereby reducing the actual cross-sectional area as a result of the extension of the filter units, thereby increasing the water velocity. The increased water velocity will increase the self-cleaning of the filter.
LO C.Filterenhederne udformes med en relativ glat overflade,idet en glat overflade mindsker risikoen for at mikroorganismer vokser på overfladen. Endvidere anbringes filteret et vist stykke under vandoverfladen for hermed at begrænse lysintensiteten,hvilket medfører at algevæksten hæmmes.LO C. The filter units are designed with a relatively smooth surface, as a smooth surface reduces the risk of microorganisms growing on the surface. Furthermore, the filter is placed a certain distance below the water surface in order to limit the light intensity, which causes algae growth to be inhibited.
L5 D. Udover den naturlige selvrensning forsynes filteret med en kunstig rensemekanisme bestående af returskylning af filteret med væske,gasart eller begge dele evt. intermitterende.Et sådant system kan udformes som vist i figur l.Det filtrerede vand ledes til et returskyllekammer,som er 20 forsynet med en overfaldskant,hvorfra vandet ledes til recipient eller videre rensning.Overfaldskanten styrer vandspejlet i procestanken.I returskyl lekammeret er anbragt en pumpe, som med givne mellemrum pumper returskyllevand (renset spildevand) tilbage gennem filteret.Denne returskylning kan suppleres med indblæsning af luft ved hjælp af en 25 blæser. Returskyl levand og luft kan tilføres samtidig eller skiftevis.-L5 D. In addition to the natural self-cleaning, the filter is equipped with an artificial cleaning mechanism consisting of back-flushing the filter with liquid, gas or both. intermittent. Such a system can be designed as shown in Figure 1. The filtered water is fed to a return rinse chamber which is provided with an overflow edge from which the water is directed to recipient or further purification. The overflow edge controls the water level in the process tank. pump, which at given intervals pumps backwashing water (purified wastewater) back through the filter. This returnwashing can be supplemented with the supply of air by means of a 25 fan. Rinse flush water and air can be supplied simultaneously or alternately.-
Systemet er forsynet med diverse ventiler og styringsarrangementer.The system is equipped with various valves and control arrangements.
E. Filteret kan gives en udformning således,at der opstår et hydraulisk sug på en del af eller hele filteret (se figur 2).Ved at udforme filteret JO. således ,at der opstår et hydraulisk sug dvs. et hydrostatisk undertryk over filteret vil dette sug bevirke at partikler fjernes fra filteret.E. The filter can be designed so that a hydraulic suction occurs on part or all of the filter (see Figure 2). By designing the filter JO. so that a hydraulic suction occurs, ie. a hydrostatic vacuum over the filter, this suction will cause particles to be removed from the filter.
F. Filtehullerne i filtermediet kan udformes således at hullerne åbnes ved returskylning.Herved kan evt. suspenderet stof opsamlet i filterhulleme )5 frigøres og udskylles.Dette kan evt. gøres ved at filtermembranen gøres elastisk.F. The filter holes in the filter medium can be designed so that the holes are opened by return rinsing. suspended matter collected in the filter holes) 5 is released and flushed. is done by making the filter membrane elastic.
Procestanken kan forsynes men en' eller flere filterenheder.Ved større 4 DK 169719 B1 anlæg vil man anvende flere filterenheder.Disse filterenheder kan anbringes på forskellig vis.En særlig gunstig anbringelse af filterenhederne ses på figur 3.Her er filterenhederne anbragt ved siden 5 af hinanden mellem to vægge proces tanken. Herved opnås at vandhastigheden øges ved indsnævring af gennemstrømningstværsnittet og derved opnås,at filtrene nemt kan forbindes med rør til filtreret vand og returskylle-vand/luft.Ved endnu større anlæg kan flere sådanne rækker af filtre anbringes efter hinanden mellem to vægge i en procestank,se figur 4.The process tank can be supplied with one or more filter units. With larger 4 DK 169719 B1 systems, several filter units will be used. These filter units can be placed in different ways. A particularly favorable positioning of the filter units can be seen in Figure 3. Here are the filter units located next to 5 of each other between two walls process the tank. Hereby, the water velocity is increased by narrowing the flow cross-section, thereby allowing the filters to be easily connected with filtered water pipes and return water / air purification. With even larger systems, several such rows of filters can be placed consecutively between two walls in a process tank. see Figure 4.
1010
Filterenhederne kan have vilkårlig geometri.På figur 5 ses foretrukne geometriske udformninger af filterenhederne.Hvilken filtergeometri,der i givet tifælde,er mest optimal afhænger af en kombination af filterets selvrensende virkning og fremstillings- og montageprisen for filteren-15 hederne.En gunstig kombination af selvrensning og pris er vist på figur 6.The filter units can have arbitrary geometry. Figure 5 shows preferred geometric designs of the filter units. Which filter geometry, which, in the given case, is most optimal depends on a combination of the filter's self-cleaning effect and the manufacturing and installation price of the filter units. self-cleaning and price are shown in Figure 6.
Filterenhederne kan opbygges på forskellig vis.Vigtig er selve filterdu-gen/filtermembranen.Filterenheden kan opbygges enten som en skal eller 20 som en ensartet enhed,se figur 7.Såfremt filterenheden opbygges som en skal kan dette gøres med et eller flere materialer.Således kan filteret evt. opbygges af et stift skellet og med relativt store huller,f.eks kan anvendes aluminiums-eller stålplader med huller eller slidser.Over et sådant stift skellet kan udspændes en filterdug med små filterporer.The filter units can be constructed in different ways. Important is the filter cloth / filter membrane itself. The filter unit can be constructed either as a shell or 20 as a uniform unit, see Figure 7. If the filter unit is constructed as a shell, this can be done with one or more materials. the filter can be is made up of a rigid shell and with relatively large holes, for example aluminum or steel plates with holes or slots can be used. Above such a rigid shell can be stretched a filter cloth with small filter pores.
2525
En ensartet filterenhed kan evt. være udført af en skumplast med porer.A uniform filter unit may be used. be made of a foam plastic with pores.
Returskylningen kan indrettes således at enkelte eller nogle af filterenhederne returskylles medens andre stadig filtrerer.Herved 30 opretholdes mere konstante overordnede hydrauliske strømmeThe return flush can be arranged so that some or some of the filter units are flush back while others are still filtering.This means that 30 more constant overall hydraulic flows are maintained.
Opfindelsen forklares nærmere i det følgende under henvisning til figur 1-7.The invention is explained in more detail below with reference to Figures 1-7.
figur 1 viser plan og snit af et renseanlæg ifølge opfindelsen med en 35 filterindretning monteret i en procestank.Figure 1 shows the plan and section of a cleaning system according to the invention with a filter device mounted in a process tank.
figur 2 viser et snit af vandstrømningen langs 2 forskellige geometrier af en filterenhed.Figure 2 shows a section of the water flow along 2 different geometries of a filter unit.
5 DK 169719 B1 figur 3 viser en plan af vandstrømningen langs en filterindretning bestående af flere filterenheder.Figure 3 shows a plan of the water flow along a filter device consisting of several filter units.
5 figur 4 viser placering af flere filterenheder anbragt i 2 rækker.Figure 4 shows the location of several filter units arranged in 2 rows.
figur 5 viser seks eksempler på geometrisk udformning af filterenhedernes profil.Figure 5 shows six examples of geometric design of the profile of the filter units.
10 figur 6 viser et eksempel på snit og opstalt af en særlig gunstig udformning.Figure 6 shows an example of a section and arranged in a particularly favorable embodiment.
figur 7 viser et snit gennem en filterenhed opbygget som en skal eller som en ensartet enhed.Figure 7 shows a section through a filter unit constructed as a shell or as a uniform unit.
15 I figur 1 ses plan og snit af et renseanlæg bestående af en procestank (1) med installeret filtreringsindretning (2) og returskyllekammer (3).Det urensede spildevand ledes til procestanken ved (4) og det rensede vand ledes ud af returskyl lekammeret ved (5).Det aktive slam beluftes af 20 aggregatet (6) og påtvinges en hastighed af omrøringsaggregaterne (7).Det aktive slam strømmer forbi flere filterenheder (8),hvorved det rene vand filtreres gennem filterenhederne ved hjælp af den hydrauliske gradient fra vandoverfladen (9) i procestanken til overfaldskanten (10) i returskyllekammeret.I returskyllekammeret er anbragt returskyllepumper 25 (11) og eventuelt en blæser (12) til returskylning med luft også.-15 shows a plan and section of a purification plant consisting of a process tank (1) with installed filtration device (2) and return rinse chamber (3). The uncontaminated waste water is led to the process tank at (4) and the purified water is discharged from the return rinse chamber at (5). The active sludge is aerated by the aggregate (6) and forced at a speed by the agitators (7). The active sludge flows past several filter units (8) whereby the pure water is filtered through the filter units by means of the hydraulic gradient from the water surface. (9) in the process tank for the assault edge (10) in the return flush chamber. In the return flush chamber, return flush pumps 25 (11) and optionally a blower (12) for return flushing with air are also provided.
Re tur skyl lepumperne renser filterenhederne ved at pumpe renset spildevand fra returskyllekammeret gennem filterenhederne til procestanken.-Filterenhederne kan efterses og vedligeholdes fra betjeningsbroen (13).Rinse the flush pumps to clean the filter units by pumping purified wastewater from the return flush chamber through the filter units to the process tank.-The filter units can be inspected and maintained from the operating bridge (13).
30 I figur 2 ses et snit af vandstrømmen (12) langs to forskellige filterenheder (13).Det ses,at vandhastigheden øges (14) langs filterenheden og at der ved denne særlige udformning også opstår et hydraulisk sug (15) langs filterenheden.30 Figure 2 shows a section of the water flow (12) along two different filter units (13). It is seen that the water velocity increases (14) along the filter unit and that in this particular design a hydraulic suction (15) also occurs along the filter unit.
35 I figur 3 ses en plan af vandstrømmen (16) langs flere filterenheder (17).Det ses at vandhastigheden øges mellem filterenhederne.Envidere ses,hvorledes vandet filtreres gennem filterenhederne (18) og herfra løber ud gennem udløbsrøret (19).35 Figure 3 shows a plane of the water flow (16) along several filter units (17). It is seen that the water velocity increases between the filter units. Furthermore, it is seen how the water is filtered through the filter units (18) and flows out of the outlet pipe (19).
6 DK 169719 B1 I figur 4 ses en plan af flere filterenheder anbragt i 2 rækker (20) og med 2 udløbsrør (21) med tilhørende returskyllepumper (22).6 DK 169719 B1 Figure 4 shows a plan of several filter units arranged in 2 rows (20) and with 2 discharge pipes (21) with associated return flush pumps (22).
5 I figur 5 ses 6 eksempler på geometrisk udformning af filterenhedernes profil:(23) prismeformet,(24) dråbeformet,(25) linseformet,(26) dobbelt airoplan vinge,(27) rektangulært,(28) cirkulært.Filterenheden (27) har i modsætning til de øvrige viste profiler ikke noget hydraulisk sug langs filteret.Til gengæld er (27) en særlig simpel og billig udformning af 10 filterenheden.5 Figure 5 shows 6 examples of the geometric shape of the profile of the filter units: (23) prism-shaped, (24) drop-shaped, (25) lens-shaped, (26) double airplane wing, (27) rectangular, (28) circular. The filter unit (27) Unlike the other profiles shown, there is no hydraulic suction along the filter. However, (27) is a particularly simple and inexpensive design of the 10 filter unit.
I figur 6 ses som eksempel plan (29) og snit (30) af en mere detaljeret udformning af filterenheden (23).Filterets sider består af en plade med huller (24),hvorudover en filterdug (25) er udspændt.Filterenheden 15 forbindes med andre filterenheder via udløbsrøret (25).Gennem dette rør (25) foretages også returskylning.Filterenheden ophænges ved hjælp af ophængnings jernene (26) .Hulpladerne (24) er opspændt på et filterskellet (27).Figure 6 shows, by way of example, plane (29) and section (30) of a more detailed design of the filter unit (23). The sides of the filter consist of a plate with holes (24), in addition to which a filter cloth (25) is stretched. with other filter units via the outlet pipe (25). Through this pipe (25) return flushing is also done. The filter unit is suspended by means of the suspension irons (26). The hollow plates (24) are clamped on a filter shell (27).
20 I figur 7 ses et snit gennem 2 typer filterenheder: -(28),som en skal (29) med filtermembran (30) og renset vand (31) inde i enheden; -(32),som et ensartet filtermateriale (33) med et indvendigt rør (34) til opsamling af renset vand.Figure 7 shows a section through 2 types of filter units: - (28), as a shell (29) with filter membrane (30) and purified water (31) inside the unit; - (32), as a uniform filter material (33) with an inner tube (34) for collecting purified water.
25 30 3525 30 35
Claims (8)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK139092A DK169719B1 (en) | 1992-11-19 | 1992-11-19 | Purification system with filter for separating active sludge and purified water in a process tank |
| AU55604/94A AU5560494A (en) | 1992-11-19 | 1993-11-03 | A purification system with filter for separation of activated sludge and treated water in a process tank |
| PCT/DK1993/000358 WO1994011311A1 (en) | 1992-11-19 | 1993-11-03 | A purification system with filter for separation of activated sludge and treated water in a process tank |
| EP94900767A EP0669899A1 (en) | 1992-11-19 | 1993-11-03 | A purification system with filter for separation of activated sludge and treated water in a process tank |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK139092A DK169719B1 (en) | 1992-11-19 | 1992-11-19 | Purification system with filter for separating active sludge and purified water in a process tank |
| DK139092 | 1992-11-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK139092D0 DK139092D0 (en) | 1992-11-19 |
| DK139092A DK139092A (en) | 1994-05-20 |
| DK169719B1 true DK169719B1 (en) | 1995-01-23 |
Family
ID=8104337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK139092A DK169719B1 (en) | 1992-11-19 | 1992-11-19 | Purification system with filter for separating active sludge and purified water in a process tank |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0669899A1 (en) |
| AU (1) | AU5560494A (en) |
| DK (1) | DK169719B1 (en) |
| WO (1) | WO1994011311A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5451317A (en) * | 1994-09-08 | 1995-09-19 | Kubota Corporation | Solid-liquid separator |
| CN102372340B (en) * | 2011-10-09 | 2013-01-16 | 东莞市威迪膜科技有限公司 | System and method for treating organic wastewater of circuit board |
| SG11202006859VA (en) * | 2019-12-27 | 2021-04-29 | Blue Ocean Life Science Pte Ltd | An Aquaculture System For Rearing Aquatic Species And A Method Thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK0510328T3 (en) * | 1991-03-07 | 1996-02-05 | Kubota Kk | Apparatus for treating activated sludge |
-
1992
- 1992-11-19 DK DK139092A patent/DK169719B1/en not_active IP Right Cessation
-
1993
- 1993-11-03 WO PCT/DK1993/000358 patent/WO1994011311A1/en not_active Application Discontinuation
- 1993-11-03 AU AU55604/94A patent/AU5560494A/en not_active Abandoned
- 1993-11-03 EP EP94900767A patent/EP0669899A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| AU5560494A (en) | 1994-06-08 |
| DK139092D0 (en) | 1992-11-19 |
| WO1994011311A1 (en) | 1994-05-26 |
| EP0669899A1 (en) | 1995-09-06 |
| DK139092A (en) | 1994-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A0 | Application filed | ||
| B1 | Patent granted (law 1993) | ||
| PBP | Patent lapsed |