DK152015B - DEVICE FOR DEVICING AURAL SUSPENSIONS AND SLAMS WITH A SEBAND PRESSURE AND SPALTESI - Google Patents
DEVICE FOR DEVICING AURAL SUSPENSIONS AND SLAMS WITH A SEBAND PRESSURE AND SPALTESI Download PDFInfo
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- DK152015B DK152015B DK317580AA DK317580A DK152015B DK 152015 B DK152015 B DK 152015B DK 317580A A DK317580A A DK 317580AA DK 317580 A DK317580 A DK 317580A DK 152015 B DK152015 B DK 152015B
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- Prior art keywords
- reaction vessel
- sieve
- overflow
- axis
- slit
- Prior art date
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- 239000000725 suspension Substances 0.000 title description 28
- 238000006243 chemical reaction Methods 0.000 claims description 58
- 238000001035 drying Methods 0.000 claims description 5
- 239000007900 aqueous suspension Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 14
- 230000000694 effects Effects 0.000 description 6
- 230000035484 reaction time Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 230000000284 resting effect Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241000234435 Lilium Species 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000008394 flocculating agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000012729 immediate-release (IR) formulation Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
- B01D33/042—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering whereby the filtration and squeezing-out take place between at least two filtering bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/28—Strainers not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D37/00—Processes of filtration
- B01D37/03—Processes of filtration using flocculating agents
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Description
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Opfindelsen angår et apparat til afvanding af vandige suspensioner og slam ved hjælp af en tørrepresse, en spaltesi og en før spaltesien og efter et blandeapparat anbragt reaktionszone, hvor det ejendom-5 melige ved apparatet ifølge opfindelsen er, at reaktionszonen dannes af en reaktionsbeholder, som udviser et overløb, der fører til et tilførselssted for spaltesien, og som er vippeligt lagret i retning mod overløbet, idet de forskellige vippestillinger kan fikse-10 res, vippeaksen for reaktionsbeholderen er anbragt i umiddelbar nærhed af tilførselsstedet for spaltesien, og spaltesien endvidere er skråtstillet, og at tørrepressen, der slutter sig til spaltesien, på i og for sig kendt måde er udformet som en sibåndpresse.The invention relates to an apparatus for dewatering aqueous suspensions and sludges by means of a drying press, a slit sieve and a pre-slit sieve and after a mixing apparatus located in which the characteristic of the apparatus according to the invention is that the reaction zone is formed by a reaction vessel which exhibits an overflow leading to a point of supply of the slot sieve, which is tiltably stored in the direction of the overflow, the various rocking positions being fixed, the tilt axis of the reaction vessel located adjacent to the point of supply of the slot sieve, and the slit sieve further being inclined and that the drying press, which joins the splice series, is in a manner known per se as a silk screen press.
15 Ved afvanding af vandige suspensioner, som f.eks.In the dewatering of aqueous suspensions, e.g.
spildevand, er det kendt før afvandingen at tilsætte et flokuleringsmiddel, som f.eks. polyelektrolyt, til suspensionen, hvilket middel blandes med suspensionen. Herved skal de i suspensionen indeholdte faste stoffer sam-20 les til fnug, der lettere kan udskilles fra den vandige fase. Ved kendte apparater af denne art tilsættes flo-kuleringsmidlet i et blandeapparat, hvori flokulerings-midlet blandes intensivt med suspensionen, og den med flokuleringsmidlet forsynede suspension bliver umiddel-25 bart fra blandeapparatet tilført tilgangsstedet i et ef-terindkoblet afvandingsapparat. Sammensætningen af suspensionerne ændrer sig hyppigt med tiden, og hastigheden for fnugdannelsen er derfor forskellig. løvrigt hæmmes fnugdannelsen også under blandingen. Ved kendte appara-30 ter af denne art sikres der således ikke en tilstrækkelig fnugdannelse, hvilket medfører, at afvandingen bliver mangelfuld.wastewater, it is known before the dewatering to add a flocculant such as e.g. polyelectrolyte, for the suspension, which is mixed with the suspension. In this way, the solids contained in the suspension must be collected into flakes which can be more easily separated from the aqueous phase. In known apparatus of this kind, the flocculant is added to a mixer in which the flocculant is intimately mixed with the suspension and the suspension provided with the flocculant is fed directly from the mixer to the access point of a post-dewatering apparatus. The composition of the suspensions changes frequently with time, and the rate of lint formation is therefore different. leafy also inhibits the formation of the fluff during mixing. Thus, in known devices of this kind, insufficient lint formation is ensured, which means that the dewatering becomes defective.
Til afvanding af vandige suspensioner, som f.eks. spildevand, er det kendt at anvende sibåndpresser. Til 35 sibåndpressen skal stoffet, der skal afvandes, ikke af- 2For dewatering aqueous suspensions, e.g. wastewater, it is known to use sieve belt presses. For the 35 ribbon press, the fabric to be dewatered should not de-2
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! i! in
gives i alt for flydende tilstand/ og det er også kendt Iis given in too liquid a state / and it is also known
at indkoble et forafvandingstrin i form af et posefilter foran sibåndpressens si. Rensningen af et sådant lommefilter kræver imidlertid et stort vandforbrug, og 5 afvandingsvirkningen af et sådant posefilter er heller ikke tilfredsstillende. Ved de kendte apparater må derfor den største del af afvandingen ske på sibåndpressen, hvilket medfører en kompliceret konstruktion af denne.to engage a pre-dewatering step in the form of a bag filter in front of the sieve belt press screen. However, the purification of such a pocket filter requires a high water consumption, and the dewatering effect of such a bag filter is also not satisfactory. In the known apparatus, therefore, the greater part of the dewatering must be done on the silk screen press, which results in a complicated construction thereof.
I de fleste tilfælde må der efterindkobles et højtryks-10 trin, hvis konstruktion er kompliceret.In most cases, a high-pressure 10 stage must be switched on, the construction of which is complicated.
Med opfindelsen tilsigtes det at tilvejebringe et apparat af den nævnte art, ved hjælp af hvilket afvandingsydelsen forbedres væsentligt, og hvor der i tilslutning til sibåndpressen ikke er behov for et kompli-15 ceret højtrykstrin.It is an object of the invention to provide an apparatus of the aforementioned kind by which the dewatering performance is substantially improved and where, in connection with the silk screen press, no complicated high pressure step is required.
Der er f.eks. i DE 2 515 162 beskrevet en fremgangsmåde og et apparat, hvor der gennemføres en sådan yderligere afvanding, jfr. fig. 1 med tilhørende ! i tekst i det nævnte skrift. Ved den fra dette skrift j 20 kendte teknik føres slam og flokuleringsmiddel fra j i i et flokuleringskammer til et sibånd og gennemgår i iThere are e.g. DE 2 515 162 discloses a method and apparatus in which such additional dewatering is carried out, cf. FIG. 1 with associated! in text of the said script. In the prior art known as j 20, sludge and flocculant are passed from j i into a flocculation chamber to a sieve band and undergo i.
efter yderligere tilsats af flokuleringsmiddel en Iafter further addition of flocculant, I
yderligere afvanding. Reaktioner til dannelse af fnug j er foreslået i såvel FR 2 407 174 som AT 328 189. ! 25 Også fra FR 2 351 061 kendes et apparat, ved hvilket i der er indrettet en reaktionszone før tilførslen til tørrepressen. De kendte reaktionszoner muliggør ganske vist en vis hviletilstand for blandingen til opnåelse af en forbedret fnugdannelse, men en målret-30 tet påvirkning og fnugdannelse har ikke været mulig \ med de hidtil generelt foreslåede reaktionszoner. ' ifurther dewatering. Reactions to form lint j are proposed in both FR 2 407 174 and AT 328 189.! Also known from FR 2 351 061 is an apparatus in which a reaction zone is arranged before the application to the drying press. The known reaction zones allow for some resting state of the mixture to achieve improved lint formation, but a targeted effect and lint formation have not been possible with the previously proposed reaction zones. 'i
Ved et apparat ifølge opfindelsen kan suspensionen i blandeapparatet tilsættes flokuleringsmidler, som j f.eks. polyelektrolytter, hvorpå suspensionen før 35 tilførslen til spaltesien bliver i ro i reaktions-zonen i et vist tidsrum eller holdes i en i ) 3In an apparatus according to the invention, the suspension in the mixer may be added to flocculants, such as polyelectrolytes, whereupon the suspension before the feed into the slit series remains at rest in the reaction zone for a certain period of time or is kept for an i) 3
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kontrolleret turbulens, hvorefter fnuggene adskilles fra den flydende fase i en spaltesi og afvandes yderligere i en sibåndpresse. Den i blandeapparatet intensivt med flokuleringsmidler blandede suspension tilføres alt-5 så ikke umiddelbart tilgangsstedet for spaltesien. Ved adskillelse af blandeapparatet fra tilgangsstedet for spaltesien med mellemindkobling af en reaktionszone undgås der en mekanisk påvirkning af fnuggene, der dannes i tilslutning til blandeapparatet, i en vis tid, hvor-10 ved fnugdannelsen begunstiges betydeligt. En mekanisk påvirkning som f.eks. opstår i selve blandeapparatet, og en umiddelbar afgivelse af suspensionen i tilslutning til blandingen på spaltesien ville ødelægge fnuggene eller hindre dannelsen af store fnug. Ved den adskil-15 te reaktionszone er det på enkel måde muligt at tilpasse suspensionens hviletid i reaktionszonen til omstændighederne, hvorved der skal tages hensyn til, at den optimale fnugdannelse behøver mere eller mindre tid alt efter sammensætningen af suspensionen. Opfindelsen bygger på, 20 at fnugdannelsen ved for kort reaktionstid ikke opnår sit optimale omfang, og at der ved for lang reaktionstid sker en degenerering af fnuggene, og den mekaniske belastningsevne for fnuggene forringes. Til afvanding i sibåndpressen er dannelsen af store fnug fordelagtig.controlled turbulence, after which the flakes are separated from the liquid phase in a slit and further dewatered in a silk screen press. The suspension mixed in the mixer intensively with flocculants is thus not immediately supplied to the point of access of the slit sieve. By separating the mixer from the point of approach of the gap series with intermediate engagement of a reaction zone, mechanical influence of the flakes formed adjacent to the mixer is avoided for a certain period of time, thereby significantly favoring the flake formation. A mechanical influence such as occurs in the mixer itself, and an immediate release of the suspension adjacent to the mixture on the slit sieve would destroy the lilies or prevent the formation of large lilies. In the separate reaction zone, it is simply possible to adjust the suspension's rest time in the reaction zone to the circumstances, taking into account that the optimum lint formation needs more or less time depending on the composition of the suspension. The invention is based on the fact that at too short a reaction time the lint formation does not reach its optimum extent and that at too long a reaction time, the degeneration of the lichen occurs and the mechanical load-bearing capacity of the lichen degrades. For dewatering in the ribbon press, the formation of large lids is advantageous.
25 Den mekaniske belastningsevne af fnuggene er imidlertid af væsentlig betydning, da de fnug, der ikke tåler mekanisk belastning, igen ødelægges, når den optimale fnugstørrelse overskrides, hvilket fører til tilstopning af porerne i sibåndene. Herved formindskes filter-30 båndenes vandgennemtrængelighed, og afvandingsvirkningen hæmmes. Ved hjælp af spaltesien, der udgør et filter, skilles væsken i væsentlig grad, og ved at der mellem blandeapparatet og spaltesien er en reaktionszone, kan der tilføres den efterfølgende sibåndpresse en optimal 35 fnugstørrelse til opnåelse af en særlig virkningsfuldHowever, the mechanical load-bearing capacity of the flakes is of significant importance, as the flies that do not tolerate mechanical load are again destroyed when the optimum flot size is exceeded, which leads to clogging of the pores in the sieve bands. This reduces the water permeability of the filter belts and inhibits the dewatering effect. By means of the slit sieve forming a filter, the liquid is substantially separated and by a reaction zone between the mixer and the slit sieve, the subsequent sieve belt press can be supplied with an optimal fluff size to obtain a particularly effective
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4 ! r ί i ϊ afvanding. Beskaffenheden af fnuggene kan uden videre j bestemmes empirisk ved udtagelse af prøver. Ved at for- i afvandingen af suspensionen,efter at fnugdannelsen har ! fundet sted i reaktionszonen, sker på en spaltesi, bli- j 5 ver fnuggene adskilt fra den flydende fase uden væsentlig belastning, så at de kommer i optimal tilstand til tilførselsstedet for sibåndpressen. Fnuggenes evne til mekanisk belastning er ved den efterfølgende afvandingsoperation i afvandingsapparaterne af udslaggivende be-10 tydning for kvaliteten af afvandingen. Når suspensionen, der indeholder fnuggene, ved afvandingen føres over si- j er, vil små dele strømme bort med vandet, i tilfælde af at fnuggene har formindsket belastningsevne. Ved for ringe mekanisk belastningsevne hos fnuggene tilstopper j 15 de sedimenterende smådele porerne i filterbåndet, og ; filterbåndets vandgennemtrængeligheden mindskes herved, og afvandingsvirkningen hæmmes. Ved opfindelsen mulig- j gøres der således en optimal udformning af fnuggene og j dermed en optimal afvandingseffekt. Der tilføres såle-20 des allerede tilførselsstedet for sibåndpressen et i vidt omfang afvandet fnugmateriale. Til et således allerede i vidt omfang afvandet fnugmateriale er en sibånd-presse særlig egnet. Virkningen af sibåndpressen forbed- i i res så meget, at sibåndpressen kan udformes mindre kom- ! 25 pliceret, og på grund af den gode fnugdannelse har også de filterkager, der forlader sibåndpressen et meget j mindre fugtighedsindhold, end der kunne opnås ved kend- j te fremgangsmåder, og det gøres endog muligt, ved ens- j artet eller endog formindsket fugtighedsindhold for fil- j 30 terkagen at give afkald på efterindkobling af et kompliceret højtrykstrin i sibåndpressen.4! r ί i ϊ drainage. The nature of the flies can be determined empirically by sampling. By increasing the dewatering of the suspension after the lint formation has! occurred in the reaction zone, occurs on a slit sieve, the flakes are separated from the liquid phase without significant loading, so that they come in optimum condition to the point of application of the sieve band press. The ability of the flies to mechanical load is of decisive importance for the quality of the dewatering in the subsequent dewatering operation in the dewatering apparatus. When the suspension containing the flies is drained over the sewer during drainage, small parts will flow away with the water, in case the flakes have diminished load capacity. At too low a mechanical load capacity of the flakes, the 15 sedimenting small portions clog the pores of the filter band, and; the water permeability of the filter belt is thereby reduced and the dewatering effect is inhibited. The invention thus enables an optimal design of the flanges and thus an optimal dewatering effect. Thus, a large amount of dewatered fluff material is already being supplied to the sealing belt press. For a so much dewatered fluff material thus used, a ribbon press is particularly suitable. The effect of the ribbon press improved in res so much that the ribbon press can be designed less com- mon! 25, and because of the good lint formation, also the filter cakes leaving the silk web press have a much lower moisture content than could be achieved by known methods, and this is even possible, by uniform or even reduced moisture content. to fill the cake with the possibility of relinquishing a complicated high-pressure stage in the silk screen press.
Ved en foretrukken udførelsesform for apparatet ifølge opfindelsen udgøres reaktionszonen af en reaktionsbeholder med variabelt volumen. Ved ændring af 35 reaktionszonens volumen kan den til den optimale fnug- 5In a preferred embodiment of the apparatus according to the invention, the reaction zone is constituted by a variable volume reaction vessel. By changing the volume of the reaction zone it can reach the optimum fluff 5
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dannelse nødvendige hviletid i reaktionszonen herved indstilles på enkel måde. Ved formindskelse af reaktionsbeholderens volumen forkortes reaktionstiden, og ved forøgelse af volumenet forlænges reaktions-5 tiden.formation necessary resting time in the reaction zone is hereby adjusted in a simple manner. By reducing the volume of the reaction vessel, the reaction time is shortened and by increasing the volume the reaction time is extended.
Ændringen af reaktionsbeholderens volumen kan gennemføres på forskellige måder, f.eks. ved hjælp af et dyklegeme.The change in the volume of the reaction vessel can be accomplished in various ways, e.g. using a dive body.
Reaktionsbeholderen har et overløb, der fører 10 til tilførselsstedet og er vippeligt lejret i forhold til afløbet, og kan fikseres i de forskellige vippestillinger. Alt efter vippestillingen er volumenet af reaktionsbeholderen forskelligt, og reaktionsbeholderens volumen kan derfor på konstruktiv 15 enkel måde ændres. Den aktuelle størrelse af reaktionsbeholderen bestemmer ved ensartet tilførsel til denne den aktuelle reaktionstid, i hvilken fnugdannelsen foregår i den med flokuleringsmiddel forsynede suspension.The reaction vessel has an overflow which leads 10 to the point of supply and is tiltably mounted relative to the drain and can be fixed in the various tilt positions. Depending on the tilt position, the volume of the reaction vessel is different, and the volume of the reaction vessel can therefore be changed in a simple and constructive manner. The actual size of the reaction vessel, by uniform application thereof, determines the actual reaction time during which the lye formation takes place in the flocculant suspension.
20 Vippeaksen er endvidere anbragt umiddelbart ved siden af tilførselsstedet. På denne måde er overløbet fra reaktionsbeholderen altid i omtrent samme stilling i forhold til tilførselsstedet.The rocker axis is furthermore located immediately adjacent to the point of supply. In this way, the overflow from the reaction vessel is always in approximately the same position relative to the delivery site.
Ifølge opfindelsen kan kanten af overløbet være 25 dannet af et med vippeaksen koncentrisk cirkelcylinder segment, idet dette slutter sig til en fast, ned-adskrånende fordelingsplade, der danner tilførselsstedet. Herved muliggøres der ved alle vippestillinger af reaktionsbeholderen en glat overgang fra kanten 30 af overløbet til tilførselsstedet, så at der også her undgås en mekanisk påvirkning af fnuggene, og endvidere opnås der en god tætning mellem reaktions-beholderen og tilførselsstedet. Udformningen af overløbskanten som cylindersegment muliggør også en ud-35 bredning af suspensionen over en bred flade, og ved 6According to the invention, the edge of the overflow may be formed by a circular cylinder concentric segment with the tilt axis, joining this to a fixed downwardly sloping distribution plate forming the point of supply. This allows for a smooth transition from the edge 30 of the overflow to the supply site at all tilt positions of the reaction vessel, so that mechanical impact of the flies is avoided here as well, and a good seal is obtained between the reaction vessel and the delivery site. The design of the overflow edge as a cylinder segment also allows the suspension to be spread over a wide surface, and at 6
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hjælp af fordelingspladen begunstiges en god fordeling af suspensionen over hele bredden.a good distribution of the suspension over the entire width is favored by means of the distribution plate.
Dette er en fordel for funktionen af det efterfølgende afvandingsspparat. Fortrinsvis slutter der sig 5 til fordelingspladen en skråtstillet spaltesi, og hældningen af fordelerpladen er ringere end hældningen af spaltesien. Denne ringere hældning af fordelingspladen forbedrer den regelmæssige fordeling på den efterfølgende si.This is an advantage of the function of the subsequent drainage apparatus. Preferably, a slanted slit is joined to the distribution plate and the inclination of the distributor plate is inferior to the slope of the slit sieve. This lower slope of the distribution plate improves the regular distribution on the subsequent screen.
10 Ved en gunstig udførelsesform for opfindelsen ud- j munder tilledningen i reaktionsbeholderens vippeakse og j er afskærmet i forhold til overløbet med en nedadrettet, j fortrinsvis parallelt med vippeaksen anbragt ledeplade, j så at den i reaktionsbeholderen indtrædende suspension 15 ikke umiddelbart kan komme til overløbet. Ved hjælp af \ i denne ledeplade opnås der en strømning gennem hele reaktionsbeholderen, så at hviletiden i reaktionsbeholderen ved en vis vippestilling er den samme for alle dele i suspensionen.In a favorable embodiment of the invention, the lead opens into the tilting axis of the reaction vessel and j is shielded relative to the overflow with a downwardly directed j, preferably parallel to the tilting axis, j so that the suspension 15 entering the reaction vessel cannot immediately reach the overflow. . By means of \ in this baffle, a flow is obtained throughout the reaction vessel so that the resting time in the reaction vessel at a certain tilt position is the same for all parts of the suspension.
20 Ifølge opfindelsen kan den underste del af reakti onsbeholderen være udformet som et cylindersegment, hvis akse er parallel med aksen for cylindersegmentet, der danner overløbskanten. Herved begunstiges strømningen af den tilførte suspension gennem hele beholderen.According to the invention, the lower part of the reaction vessel may be formed as a cylinder segment, the axis of which is parallel to the axis of the cylinder segment forming the overflow edge. This promotes the flow of the suspended suspension throughout the container.
25 Ved at tilledningen i reaktionsbeholderen udmunder i j25 By the lead in the reaction vessel opening in j
dennes vippeakse, opnås der en væsentlig konstruktiv Iof its tilt axis, a substantial constructive I is obtained
JJ
forenkling, da tilledningen bliver på dette sted,og kun reaktionsbeholderens tilslutningssted drejes i forhold j til tilledningen. Herved undgås tætningsvanskeligheder.simplification as the lead stays at this point and only the reaction vessel connection point is rotated relative to the lead. This avoids sealing difficulties.
30 Ved den ifølge opfindelsen anvendte spaltesi drejer det sig om et filtermiddel, der tilbageholder faste stoffer 1 ved filtreringen, men lader væsker passere. Sådanne ! spaltesier har intet med sædvanlige sier at gøre.In the slit according to the invention, it is a filtering agent which retains solids 1 in the filtration, but allows liquids to pass. Such! column essays have nothing to do with usual sayings.
Opfindelsen forklares nærmere i det følgende under 35 henvisning til tegningen, hvor fig. 1 viser et sidebillede af apparatet, delvis i snit, fig. 2 en detalje, 7The invention will be explained in more detail below with reference to the drawing, in which fig. 1 is a side view of the apparatus, partially in section; FIG. 2 a detail, 7
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fig. 3 et tværsnit gennem reaktionsbeholderen og gennem første trin af afvandingen efter linien III-III i fig. 4, fig. 4 et snit gennem reaktionsbeholderen efter li-5 nien IV-IV i fig. 3.FIG. 3 is a cross-section through the reaction vessel and through the first stage of dewatering along line III-III in FIG. 4, FIG. 4 is a section through the reaction vessel along line IV-IV of FIG. Third
Suspensionen, der skal afvandes, blandes kraftigt 1. et ikke vist blandeapparat med et flokuleringsmiddel og tilføres en reaktionsbeholder 1 gennem en ledning 2. Over en overløbskanal 3 passerer suspensionen fra 10 reaktionsbeholderen 1 til en tilgangsplade 4, hvortil der er sluttet en skråtstillet spaltesi 5. Spaltesien 5 består, som fig. 2 viser detaljeret, af horisontale ristestænger 6, hvis overflader 7 er anbragt trappeformet efter hinanden. Den flydende fase flyder 15 gennem spalterne 8 mellem ristestængerne 6, og fasen, der indeholder fnuggene, strømmer over spaltesien 5's skrå flade.The suspension to be dewatered is vigorously mixed 1. a mixing device not shown with a flocculant and fed to a reaction vessel 1 through a conduit 2. Over an overflow channel 3, the suspension passes from the reaction vessel 1 to an inlet plate 4, to which an inclined gap 5 is connected. The gap series 5 consists, as in FIG. 2 shows in detail, of horizontal grate bars 6, the surfaces of which 7 are arranged in succession. The liquid phase flows 15 through the slots 8 between the grate bars 6, and the phase containing the flakes flows over the inclined surface of the slot series 5.
Volumenet af reaktionsbeholderen 1 er indrettet til at forandres ved svingning om tilledningen 2's ak-20 se 9. Væskespejlet i reaktionsbeholderen 1 er betegnet med 10, og reaktionsbeholderens volumen formindskes i en udsvinget stilling, som vist med stiplede linier 1'. Ved formindskelsen af reaktionsbeholderens volumen bliver hviletiden i denne og denned reaktions-25 tiden formindsket. Reaktionsbeholderen er indstillelig i forskellige svingningsstillinger, der kan bestemmes empirisk.The volume of the reaction vessel 1 is adapted to change by oscillation about the axis 9 of the conduit 2. The liquid mirror in the reaction vessel 1 is denoted by 10, and the volume of the reaction vessel is reduced in a pivoted position, as shown by dashed lines 1 '. By decreasing the volume of the reaction vessel, the resting time in this and the reaction time is reduced. The reaction vessel is adjustable in various oscillation positions that can be determined empirically.
Fra den nederste kant 11 af den skrå spaltesi 5 passerer fasen med fnug på tilgangsstedet 12 for en 30 sibåndpresse. Sibåndet 13 føres i retning af pilen 14 over valser. På stedet 15 bliver det fnuggede materiale kastet af på et andet sibånd 16 og bliver på sædvanlig måde styret mellem sibåndene 15 og 16 over afvandingstromler 17, 18 og 19 samt over tromler 35 20, 21 og 22, hvorefter materialet afgives på stedet 23.From the lower edge 11 of the oblique slit 5, the phase of fluff passes at the access point 12 of a 30 ribbon press. The ribbon 13 is passed in the direction of the arrow 14 over rollers. At site 15, the fluffy material is discarded on a second sieve band 16 and is conventionally guided between the sieve bands 15 and 16 over drainage drums 17, 18 and 19 as well as over drums 35 20, 21 and 22, after which the material is released at site 23.
Af fig. 3 og 4 fremgår detaljer af den foran sibånd-presspn'anbragte spaltesi og reaktionszonen, idet hen-In FIG. Figures 3 and 4 show details of the front ribbon compression slit and the reaction zone,
DK 152015 BDK 152015 B
8 visningstallene i fig. 1 i hovedsagen er bibeholdt her. Reaktionsbeholderen 1 er svingbart lejret om aksen 9, hvortil suspensionen, der er blandet i det ikke viste blandeapparat med flokuleringsmidler, tilføres gennem en 5 ledning 2. Ledningen 2 udmunder gennem en afbøjet del j 24 i den hule akse 25 for reaktionsbeholderen 1, som ' i / det ses i fig. 4. Da aksetappen 25 ved vippebevægel-sen af reaktionsbeholderen 1 drejes i forhold til den ombukkede del 24 af tilledningen 2, er der her en 10 tætningsmanchet 26. 27 er vippelejringerne.8 shows the figures in FIG. 1 in the main proceedings is retained here. Reaction vessel 1 is pivotally mounted about axis 9, to which the suspension, which is mixed in the flocculant mixer not shown, is fed through a conduit 2. Conduit 2 opens through a deflected portion 24 of the hollow axis 25 of the reaction vessel 1 as i / it can be seen in fig. 4. As the axis 25 at the rocker movement of the reaction vessel 1 is rotated relative to the folded portion 24 of the conduit 2, there is here a sealing sleeve 26. 27 is the rocker bearings.
Overløbskanten 28 udgøres af et cylindersegment 29, hvis akse falder sammen med vippeaksen 9. Mod dette cylindersegment 29 ligger en fordelingsplade 30 an, hvilken plade danner tilgangsstedet for suspensio-15 nen på den efterindkoblede spaltesi 5. Til cylindersegmentet 29 er der sluttet en ledeplade 31. Den gennem den hule akseltap 25 strømmende suspension passe- j rer ind i det indre af cylindersegmentet 29 og ledes 1 nedefter af ledepladen 31, så at den ikke direkte kan j 20 passere til overløbet 28. Den tilførte suspension strøm- ! mer således gennem hele reaktionsbeholderen 1. For at i begunstige denne strømning er bunden af reaktionsbehol- j deren udformet som et cylindersegment 32, hvis akse ligger parallelt'med aksen for cylindersegmentet 29. j 25 I den med fuldt optrukne linier viste stilling, hvor der opstår et væskeniveau 33, har reaktionsbeholderen 1 det største volumen. Ved en svingning til den punkterede viste stilling 11 formindskes dette volumen, og i hver vilkårlig vippestilling kan reaktionsbe-30 holderen 1 fæstnes således, at reaktionsbeholderen l’s volumen og dermed hviletiden for suspensionen i reaktionsbeholderen kan indstilles vilkårligt.The overflow edge 28 is constituted by a cylinder segment 29, the axis of which coincides with the rocker axis 9. Against this cylinder segment 29, a distribution plate 30 is provided which forms the access point for the suspension 15 on the post-engaging slot 5. A cylinder plate 29 is connected. The suspension flowing through the hollow shaft 25 passes into the interior of the cylinder segment 29 and is guided 1 downwards by the guide plate 31 so that it cannot pass directly to the overflow 28. The applied suspension flows! thus, throughout the reaction vessel 1. In order to favor this flow, the bottom of the reaction vessel is formed as a cylinder segment 32, the axis of which is parallel to the axis of the cylinder segment 29. In the position shown with fully drawn lines, where if a liquid level 33 occurs, the reaction vessel 1 has the largest volume. By a pivot to the dotted position 11, this volume is reduced and in each tilt position the reaction vessel 1 can be fixed such that the volume of the reaction vessel 1 and thus the resting time of the suspension in the reaction vessel can be arbitrarily adjusted.
Til fordelingspladen 30 slutter den skrå spalte- j si 5 sig, hvilken spaltesis skrå stilling kan ændres | i 35 ved hjælp af en indstillingsskrue 34. Denne spaltesi i udgør det første afvandingstrin, og vandet passerer ; gennem sien til et rum 35, hvorfra det strømmer gennem en afgang 36. Fra spaltesien 5 passerer slammet udTo the distribution plate 30, the oblique column 5 sits, which oblique position can be changed | in 35 by means of an adjusting screw 34. This gap step i represents the first dewatering step and the water passes; through the sieve to a space 35 from which it flows through an outlet 36. From the slit 5, the sludge passes out
Claims (5)
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0532579A AT363869B (en) | 1979-08-02 | 1979-08-02 | DEVICE FOR TREATING AQUEOUS SUSPENSIONS |
| AT532579 | 1979-08-02 | ||
| AT0532479A AT377247B (en) | 1979-08-02 | 1979-08-02 | DEVICE FOR DRAINING AQUEOUS SUSPENSIONS |
| AT532479 | 1979-08-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK317580A DK317580A (en) | 1981-02-03 |
| DK152015B true DK152015B (en) | 1988-01-25 |
Family
ID=25602067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK317580AA DK152015B (en) | 1979-08-02 | 1980-07-23 | DEVICE FOR DEVICING AURAL SUSPENSIONS AND SLAMS WITH A SEBAND PRESSURE AND SPALTESI |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0023899B1 (en) |
| DE (2) | DE8020600U1 (en) |
| DK (1) | DK152015B (en) |
| NO (1) | NO152166C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI831387L (en) * | 1983-04-22 | 1984-10-23 | Enso Gutzeit Oy | FILTRERINGSPRESS FOER KONCENTRERING AV EN SUSPENSION ELLER EN CELLULOSAMASSA. |
| DE3734974A1 (en) * | 1986-10-21 | 1989-04-20 | Baehr Albert | DEVICE FOR DRAINING SLUDGE AND SIMILAR SUBSTANCES |
| FR2673933B1 (en) * | 1991-03-13 | 1994-03-04 | Degremont Sa | COMPACT APPARATUS FOR TREATING SLUDGE BY DRIPPING AND PRESSING. |
| EP0615957A1 (en) * | 1993-03-13 | 1994-09-21 | Sang Oh Hong | Device for dehydrating sludge waste |
| US5531889A (en) * | 1994-03-08 | 1996-07-02 | Atotech Usa, Inc. | Method and apparatus for removing resist particles from stripping solutions for printed wireboards |
| DE29810474U1 (en) * | 1998-06-12 | 1999-10-21 | Kühn Umweltprodukte GmbH, 29683 Fallingbostel | Sludge thickening device |
| GB2361915B (en) * | 2000-05-05 | 2002-12-24 | Genesis Fluid Solutions Llc | High speed dewatering of slurries |
| DE102014222374A1 (en) * | 2014-11-03 | 2016-05-04 | Henkel Ag & Co. Kgaa | An oxidation colorant containing a combination of crosslinked, aminated siloxane polymers and nonionic surfactants |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2515162A1 (en) * | 1975-04-08 | 1976-10-21 | Rittershaus & Blecher Gmbh | Dewatering of sludge - by adding two flocculating agents giving opposite charges successively before filtering |
| FR2351061A1 (en) * | 1976-05-14 | 1977-12-09 | Lautrette Jean Claude | Plant to dehydrate sludge from waste water purificn. process - uses flocculation followed by dynamic draining then pressing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1415297A (en) * | 1971-10-21 | 1975-11-26 | Harleyford Hydrosand Equipment | Separation from water of a material suspended or accumulated therein |
| DE2343323C2 (en) * | 1973-08-28 | 1975-08-21 | Albert 6683 Elversberg Baehr | Mixing tank for the continuous addition and mixing of flocculants to sludge, especially sewage sludge |
| DE2438165C2 (en) * | 1974-08-08 | 1982-10-14 | Rittershaus & Blecher Gmbh, 5600 Wuppertal | Filter device, in particular for dewatering sludge in sewage treatment plants |
| IN155727B (en) * | 1975-07-11 | 1985-03-02 | Dorr Oliver Inc | |
| AU524927B2 (en) * | 1977-10-17 | 1982-10-14 | Somat Corp. | Sludge treatment |
-
1980
- 1980-07-23 DK DK317580AA patent/DK152015B/en not_active Application Discontinuation
- 1980-07-31 DE DE19808020600U patent/DE8020600U1/en not_active Expired
- 1980-07-31 NO NO802303A patent/NO152166C/en unknown
- 1980-08-01 EP EP80890089A patent/EP0023899B1/en not_active Expired
- 1980-08-01 DE DE8080890089T patent/DE3062039D1/en not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2515162A1 (en) * | 1975-04-08 | 1976-10-21 | Rittershaus & Blecher Gmbh | Dewatering of sludge - by adding two flocculating agents giving opposite charges successively before filtering |
| FR2351061A1 (en) * | 1976-05-14 | 1977-12-09 | Lautrette Jean Claude | Plant to dehydrate sludge from waste water purificn. process - uses flocculation followed by dynamic draining then pressing |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3062039D1 (en) | 1983-03-24 |
| EP0023899B1 (en) | 1983-02-16 |
| NO802303L (en) | 1981-02-03 |
| NO152166B (en) | 1985-05-06 |
| EP0023899A1 (en) | 1981-02-11 |
| DE8020600U1 (en) | 1981-02-26 |
| DK317580A (en) | 1981-02-03 |
| NO152166C (en) | 1985-08-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ATS | Application withdrawn | ||
| PHB | Application deemed withdrawn due to non-payment or other reasons |