DK147971B - PLANT FOR ANAEROBIC WASTE CLEANING - Google Patents
PLANT FOR ANAEROBIC WASTE CLEANING Download PDFInfo
- Publication number
- DK147971B DK147971B DK279477AA DK279477A DK147971B DK 147971 B DK147971 B DK 147971B DK 279477A A DK279477A A DK 279477AA DK 279477 A DK279477 A DK 279477A DK 147971 B DK147971 B DK 147971B
- Authority
- DK
- Denmark
- Prior art keywords
- chamber
- post
- reaction zone
- sludge
- sedimentation
- Prior art date
Links
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
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
- C02F3/2886—Two story combinations of the Imhoff tank type
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/36—Means for collection or storage of gas; Gas holders
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
- C12M27/18—Flow directing inserts
- C12M27/20—Baffles; Ribs; Ribbons; Auger vanes
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- General Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Sustainable Development (AREA)
- General Health & Medical Sciences (AREA)
- Biotechnology (AREA)
- Biomedical Technology (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Molecular Biology (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Clinical Laboratory Science (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Description
i o 147971i o 147971
Opfindelsen angår et anlæg til anaerob rensning af spildevand, med en reaktionstank, der har en reaktionszone og mindst ét kammer til eftersedimentering og adskillelse af slam og væske anbragt oven på reaktionszonen, tilførselsor-5 ganer for tilførsel af spildevandet til reaktionszonen, adskillelsesorganer til adskillelse af gassen fra slammet og væsken, en tilførselsåbning for tilførsel af slam-væske-blan-dingen fra tankens reaktionszone til eftersedimenterings-kammeret, og en længere nede placeret, fra kammeret til reak-10 tionszonen førende udløbsåbning, hvorved det ved sedimentering i eftersedimenteringskammeret adskilte slam føres tilbage til reaktionszonen.BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates to an anaerobic wastewater treatment plant having a reaction tank having a reaction zone and at least one post-sedimentation and separation chamber of sludge and liquid disposed on top of the reaction zone, wastewater supply to the reaction zone, the gas from the sludge and the liquid, a supply opening for supplying the sludge-liquid mixture from the reaction zone of the tank to the post-sedimentation chamber, and a further downstream outlet opening leading from the chamber to the reaction zone, whereby the sedimentation chamber is sedimented in the post-sedimentation chamber. is returned to the reaction zone.
Ved et fra svejtsisk patentskrift nr. 340.198 kendt anlæg af denne art er reaktionszonen foroven helt lukket 15 af eftersedimenteringskammerets bund, og blandingen af slam og vand føres udvendigt igennem en ledning opefter fra reaktionszonen til eftersedimenteringskammeret, idet denne strømning foregår under indflydelse af tilførselen af væske, som skal behandles, til reaktionszonens nederste del, og bortled-20 ningen af renset vand over et overløb ved eftersedimenteringskammerets øverste del. Gassen fraskilles i reaktionszonens øverste del, og samles og bortledes separat, så at den holdes borte fra eftersedimenteringskammeret. Dette kammers bund har kun en ringe hældning, og derpå aflejret slam føres ved 25 hjælp af en rakel til en centralt i bunden anbragt udløbsåbning, igennem hvilken det kan bevæge sig nedefter ind i reaktionszoneni igennem en kontinuerligt arbejdende sluse, som tillader en gradvis passage af slam, men i alt væsentlige ingen passage af vand. Dette betyder, at der næppe fo-30 regår nogen cirkulation af væske igennem eftersedimenteringskammeret.At a plant of this kind known from Swiss patent no. , which is to be treated, to the lower part of the reaction zone, and the discharge of purified water over an overflow at the upper part of the sedimentation chamber. The gas is separated into the upper part of the reaction zone and collected and discharged separately so that it is kept away from the post-sedimentation chamber. The bottom of this chamber has only a slight slope, and then deposited sludge is guided by a rocker to a centrally located outlet opening through which it can move downwardly into the reaction zone through a continuous working sluice allowing a gradual passage of sludge, but essentially no passage of water. This means that there is hardly any circulation of fluid through the sedimentation chamber.
Fra dette anlæg adskiller anlægget ifølge opfindelsen sig ved, at reaktionszonens væskerum er ført opefter langs eftersedimenteringskammeret over et stykke, som i det 35 mindste svarer til højdeafstanden mellem tilførselsåbningen til eftersedimenteringskammeret og den længere nede placerede udløbsåbning fra kammeret, på en sådan måde, at opad- o 2 147971 strømmende gasser i nævnte opefter første del af reaktionszonen medbringer væske og slam opefter til tilførselsåbningen, at der både ved tilførselsåbningen og ved udløbsåbningen findes gasopfangende organer til at hindre gasser i at trænge 5 ind i eftersedimenteringskammeret og at kammerets udløbsåbning er udformet for nem nedadgående passage både af slam og af vand fra eftersedimenteringskammeret tilbage til reaktionszonen.From this plant, the system according to the invention differs in that the liquid space of the reaction zone is led upwards along the post-sedimentation chamber over a distance which corresponds at least to the height distance between the supply opening to the post-sedimentation chamber and the further downstream outlet opening from the chamber, in such a way that - gases flowing in said upwardly first part of the reaction zone bring liquid and sludge upwardly to the inlet opening, that there are gas collecting means at both the inlet opening and the outlet opening to prevent gases from entering the sedimentation chamber and the outlet of the chamber easy downward passage of both sludge and water from the sedimentation chamber back to the reaction zone.
Herved tilvejebringes en kraftig cirkulation af 10 væske igennem eftersedimenteringskammeret uden anvendelse af ekstra energi udefra, men ved udnyttelse af den i reaktionszonen udviklede gas, hvorved der opnås en bedre indbyrdes styring af opholdstiderne i de forskellige zoner, en højere rensningsgrad, og en i alt forbedret effektivitet.This provides a vigorous circulation of 10 liquid through the post-sedimentation chamber without the use of extra energy from outside, but by utilizing the gas developed in the reaction zone, thereby providing a better mutual control of residence times in the different zones, a higher degree of purification and an overall improved efficiency.
15 Underkravene angiver udførelsesformer for anlæg get, som er ejendommelige ved hensigtsmass sige foranstaltninger til sikker styring af de for opfindelsen ejendommelige bevægelser af medierne i forhold til hinanden. Specielt skal anføres, at gasserne fra det i krav 3 omhandlede opfang-20 ningskammer kan fjernes med et kontrollabelt overtryk, at krav 4 omhandler hensigtsmæssige foranstaltninger til opfang-ning af skum under anlæggets arbejde, og at der ved det i krav 7 angivne opnås, at højden af reaktionszonens tilførselsåbning kan varieres på nem kontrollerbar måde.The subclaims specify embodiments of the system which are peculiar to appropriate measures for the safe control of the media peculiar to the invention relative to one another. Specifically, it should be noted that the gases from the capture chamber of claim 3 can be removed with a controllable overpressure, that claim 4 deals with appropriate foam trapping measures during the operation of the plant, and that, as stated in claim 7, that the height of the reaction zone supply port can be varied in an easily controllable manner.
25 Opfindelsen vil i det følgende blive nærmere forkla ret under henvisning til tegningen, som skematisk viser udførelsesformer for anlægget ifølge opfindelsen, idet fig. 1 i radialt snit viser et cylindrisk anlæg, fig. 2 i skrå afbildning et reaktangulært anlæg, og 30 fig. 3 et længdesnit gennem en anden rektangulær udførelsesform for anlægget med en afløbskanal anbragt mellem to kamre af en eftersedimenteringscelle.BRIEF DESCRIPTION OF THE DRAWINGS The invention will be explained in more detail below with reference to the drawing, which schematically shows embodiments of the system according to the invention, fig. 1 in radial section shows a cylindrical abutment; FIG. 2 is a diagrammatic view of a reactangular plant; and FIG. 3 is a longitudinal section through another rectangular embodiment of the plant with a drain channel arranged between two chambers of a post-sedimentation cell.
I figurerne er 1 en reaktionszone, 2 et eftersedimen-teringskammers væg, 3 ledninger, som danner eftersedimente-35 ringskammerets indløbsåbninger, 4 en zone til opsamling af . skum, 5 et skot under indløbsåbninger, 6 et skot under udløbs åbninger, 7 en gaspassage, 8 et udløbsdræn, 9 en gasopsam-In the figures, 1 is a reaction zone, 2 is a wall of the sedimentation chamber, 3 conduits forming the inlet openings of the sedimentation chamber, 4 is a zone for collecting. foam, 5 a bulkhead under inlet openings, 6 a bulkhead under outlet openings, 7 a gas passage, 8 an outlet drain, 9 a gas collection.
OISLAND
147971 3 lingszone, 10 og 11 vandrette planer, mellem hvilke væskesøjlerne 12 og 13 er anbragt, 12 en væskesøjle i eftersedi-menteringskammeret med stort slamindhold og uden gasbobler, og 13 en væskesøjle uden for eftersedimenteringskammeret med 5 ringere slamindhold, men med gasbobler.3, 10 and 11 horizontal planes between which the liquid columns 12 and 13 are disposed, 12 a liquid column in the post-sedimentation chamber with large sludge content and without gas bubbles, and 13 a liquid column outside the sedimentation chamber with 5 inferior sludge contents, but with gas bubbles.
Det i fig. 1 viste eftersedimenteringskammer har form som en cirkulær tragt eller keglestub med en hældningsvinkel f.eks. på 45° og med en åbning 14 nederst. I nævnte tragt kan der eksempelvis på fire steder være tilvejebragt 10 åbninger 15, i hvilke ledninger 3, i dette eksempel cylindriske rør, er fastgjort. I fig. 1 er der også i dette tilfælde valgt en hældningsvinkel på 45°, så at rørenes akse forløber vinkelret på nævnte tragts væg. Dette er dog ikke nødvendigt for, at anordningen skal kunne fungere. De fire 15 rør 3 når ind i en central zone 4, som er åben opadtil og nedadtil.The FIG. 1, the sedimentation chamber shown in FIG. at 45 ° and with an opening 14 at the bottom. In said funnel, for example, at four locations may be provided 10 openings 15 in which conduits 3, in this example cylindrical tubes, are secured. In FIG. 1, a tilt angle of 45 ° is also selected in this case so that the axis of the tubes extend perpendicular to the wall of said hopper. However, this is not necessary for the device to function. The four 15 pipes 3 enter a central zone 4 which is open upwards and downwards.
Under hvert rør 3 findes et skot 5, der eksempelvis kan bestå af et halvcylindrisk rørstykke, og som forhindrer opadstigende gasbobler i at nå ind i rørene 3, da nævnte 20 bobler under opstigningen ledes i en retning uden for rækkevidde af åbningerne 15 ved hjælp af den af skottet dannede skærm.Below each pipe 3 is a bulkhead 5, which may, for example, consist of a half-cylindrical pipe piece, which prevents rising gas bubbles from entering the pipes 3, as said 20 bubbles are guided during the ascent in a direction out of range of the openings 15 by means of the screen formed by the bulkhead.
Under tragtens åbning 14 findes en af to koniske dele dannet formdel 6. Af denne formdel ledes opadstigende 25 gasbobler til siden uden for rækkevidde af åbningen 14. Desuden styres recirkulationen af slammet fra zonen 2 ind i reaktionszonen på kontrolleret måde.Under the opening 14 of the hopper, one of two tapered parts is formed mold 6. Of this mold part, upward 25 gas bubbles are directed out of range of the opening 14. In addition, the recycling of the sludge from zone 2 into the reaction zone is controlled in a controlled manner.
Reaktionszonen 1 er i retning nedefter kun vist indtil skottet 5, men denne zone strækker sig to til fire 30 m længere nedad, nemlig i det mindste over en afstand svarende til eftersedimenteringskammeret 2's højde. Ved reaktionszonens bund findes et indløb for det spildevand, som skal behandles, og som eventuelt kunne gøres til genstand for en for-rensning, og yderligere findes der et udløb til 35 tømning og rengøring af anlægget. Dette udløb kan være lukket under anlæggets normale drift.The reaction zone 1 is shown downward only until the bulkhead 5, but this zone extends two to four 30 m further down, namely at least over a distance corresponding to the height of the sedimentation chamber 2. At the bottom of the reaction zone there is an inlet for the wastewater to be treated which could possibly be subjected to a purification, and further there is an outlet for emptying and cleaning the plant. This outlet may be closed during normal operation of the system.
147971 o 4147971 o. 4
Anlægget fungerer på følgende måde:The system works as follows:
Vand indholdende aktivt slam til anaerobisk nedbrydning ledes ind i beholderens reaktionszone, og der tilsættes kontinuerligt spildevand, som skal renses. Ved fermenterings-5 reaktionen dannes der gasbobler i væsken, og urenhederne i spildevandet nedbrydes gradvis, idet der dannes methan og noget carbondioxid og vand. Gassen fungerer som en mammutpumpe, og rundt om eftersedimenteringskammeret 2 finder en opadrettet bevægelse sted i væsken. Som følge heraf flyder 10 nævnte væske med en del af slammet gennem åbningerne 15 ind i ledningerne 3 og derfra ind i skumopsamlingszonen 4, hvor skummet flyder på væsken og kan fjernes, enten ved hjælp af mekaniske skummeorganer eller over et særskilt, ikke vist overløb eller med kemiske midler. Vand og slam synker ned i ef-15 tersedimenteringskammerets tragt, og ved tragtens nederste del dannes en stærkere slamkoncentration. Blandingen forlader cellen 2 gennem åbningen 14.Water containing active sludge for anaerobic degradation is fed into the reaction zone of the vessel and continuous wastewater is added to be purified. In the fermentation reaction, gas bubbles are formed in the liquid and the impurities in the wastewater are gradually decomposed, forming methane and some carbon dioxide and water. The gas acts as a mammoth pump and around the sedimentation chamber 2 an upward movement takes place in the liquid. As a result, said liquid with a portion of the sludge flows through the openings 15 into the conduits 3 and thence into the foam collection zone 4, where the foam floats on the liquid and can be removed, either by mechanical foam means or over a separate overflow, not shown or by chemical means. Water and sludge sink into the after-settling chamber and at the lower part of the funnel a stronger sludge concentration is formed. The mixture leaves cell 2 through aperture 14.
De opadstigende gasbobler strømmer ikke med væsken ind i åbningerne 15, men ledes sammen med væske rundt om det 20 skærmende skot 5, så at væsken kan nå nævnte åbning, men gas-boblerne stiger op til zonen 9, hvorfra gassen bortledes gennem gasudløbet 7 under et vist overtryk, der er tilstrækkeligt højt til at lade en del gas forblive i zonen 9 uanset det højere væskeniveau i eftersedimenteringskammeret 2.The rising gas bubbles do not flow with the liquid into the openings 15, but are led along with liquid around the shielding bulkhead 5 so that the liquid can reach said opening, but the gas bubbles rise up to zone 9, from which the gas is discharged through the gas outlet 7 below a certain overpressure sufficiently high to allow some gas to remain in zone 9 regardless of the higher liquid level in the post-sedimentation chamber 2.
25 Den beskrevne væske- og slamcirkulation sker hoved sagelig som følge af forskellen i vægtfylde i blandingen af vand og slam og gasboblerne i zonen mellem niveaulinierne 10 og 11, dvs. over væskesøjlen 12 inden i eftersedimente·'·' ringskammeret 2 og søjlen 13 i reaktoren uden for denne cel-30 le. Inden i eftersedimenteringskammeret indtræder der ud over nævnte cirkulationsbevægelse en opadstigende væskestrømning, hvorved væsken i skumopsamlingszonen 4 flyder nedad og deler sig i to strømningsgrene ‘i den nederste del. Dette resulterer i en nedadrettet strømning til åbningen 14 med det kon-35 centrerede slam, som fortykkes, og en opadrettet strømning omkring zonen 4 til overløbet 8, og nævnte strømning kompenseres ved tilførsel forneden i anlægget af spildevand, som skal behandles.25 The liquid and sludge circulation described is mainly due to the difference in density in the mixture of water and sludge and the gas bubbles in the zone between the level lines 10 and 11, ie. above the liquid column 12 within the posterior sediment chamber 2 and the column 13 in the reactor outside this cell 30 le. Within the post-sedimentation chamber, in addition to said circulation movement, an upward flow of liquid occurs, whereby the liquid in the foam collection zone 4 flows downward and divides into two flow branches' in the lower part. This results in a downward flow to the aperture 14 with the concentrated sludge which thickens and an upward flow around the zone 4 to the overflow 8, and said flow is compensated by supplying downstream of the effluent to be treated.
* o 147971 5* o 147971 5
Den strømning, som hidrører fra overløbet 8, vil bevæge sig ind i en zone, der gradvis udvider sig i retning opefter, hvorved strømningshastigheden aftager med det resultat, at væsken på effektiv måde vil blive befriet for 5 slampartikler.The flow resulting from the overflow 8 will move into a zone which gradually expands in the upward direction, whereby the flow rate decreases with the result that the liquid will be effectively liberated from 5 sludge particles.
I ledningsrørene 3 kan der på teleskoplignende måde indsættes indvendige rør 16, som kan skydes ind i ledningsrørene og tilbage med det formål at variere højden af indløbsåbningerne 18 ved disses nederste ende, så at en iboende 10 naturlig cirkulation som ovenfor beskrevet kan indstilles og styres.Internal tubes 16 can be inserted into the conduits 3 in a telescope-like manner, which can be slid into the conduits and back for the purpose of varying the height of the inlet openings 18 at their lower end so that an inherent 10 natural circulation as described above can be set and controlled.
Fig. 2 viser en rektangulær reaktionsbeholder. I denne figur er for- og bagvæggen såvel som reaktionsbeholderens nederste del udeladt med henblik på bedre forståelse 15 af opfindelsen.FIG. 2 shows a rectangular reaction vessel. In this figure, the front and rear walls as well as the lower part of the reaction vessel are omitted for better understanding of the invention.
I reaktionsbeholderens nederste del findes et indløb for spildevand, som skal behandles, og denne nederste del er omtrentligt lige så høj som den viste del af anlægget.In the lower part of the reaction vessel there is a waste water inlet to be treated, and this lower part is approximately as high as the part shown in the plant.
Som vist er i denne udførelsesform skotterne 5 og 20 6, der tjener til at lede gasboblerne, udført som retliniede, skråt forløbende legemer af plademateriale, og disse skotter afskærmer derover beliggende, rektangulære åbninger 14 og 15 mod opstigende gasbobler, så at nævnte bobler ikke kan nå zonen 9 og ikke kan stige op inden i åbningerne 14 og 15.As shown in this embodiment, the bulkheads 5 and 20 6 serving to guide the gas bubbles are constructed as straight, inclined extending bodies of sheet material, and these bulkheads shield overlying rectangular openings 14 and 15 against rising gas bubbles so that said bubbles do not can reach zone 9 and cannot rise within openings 14 and 15.
25 Et andet skot 19 danner en adskilllelse mellem overfladen af skumopsamlingszonen 4 og overfladen af den celle, hvorfra det rensede spildevand fjernes via overløbsrenden 8.Another bulkhead 19 forms a separation between the surface of the foam collection zone 4 and the surface of the cell from which the purified wastewater is removed via the overflow channel 8.
Lodret indstillelige skotter 20 og 21 benyttes til styring · af tilførselen til eftersedimenteringskammeret og udstrøm-30 ningen fra reaktionszonen gennem åbningen 15.Vertically adjustable bulkheads 20 and 21 are used to control the supply to the post-sedimentation chamber and outflow from the reaction zone through the opening 15.
Fig. 3 viser to ved siden af hinanden anbragte eftersedimenteringskamre, der enten kan have cirkulær eller rektangulær tværsnitsform. Ved ydersiderne findes der lodret forløbende ledningsrør 3 og i det midterste område en fælles 35 ledning 3 for begge eftersedimenteringskamre. I øvrigt svarer dette anlæg i princippet i det væsentlige til de i fig.FIG. 3 shows two adjacent sedimentation chambers which can be either circular or rectangular in cross-sectional shape. At the outside there are vertically extending conduit 3 and in the middle region a common conduit 3 for both post-sedimentation chambers. Moreover, this plant is in principle substantially similar to the one shown in FIG.
1 og 2 viste.1 and 2.
OISLAND
147971 6147971 6
Ud over disse udførelsesformer kan der konstrueres andre, hvor samme arbejdsprincip som ovenfor omtalt anvendes, idet dette arbejdsprincip kan benyttes generalt i forskellige slags konstruktioner af eftersedimenteringsanlæg.In addition to these embodiments, others may be constructed using the same working principle as mentioned above, this working principle being generally used in various types of post-sedimentation structures.
5 Nedenstående eksempel beskrives til nærmere for ståelse af en særlig udførelsesform for et sådant anlæg ifølge opfindelsen.The following example is described in more detail with reference to a particular embodiment of such a plant according to the invention.
Eksempel 10 I en cylindrisk reaktionsbeholder med et rumindhold 3 på 6 m har man installeret en eftersedimenteringsanordning som den i fig. 1 viste. Afstanden mellem de to vandrette planer 10 og 11, som forårsagede den med slameftersedimenterings-anordningen opnåede virkning, var 25 cm. Til denne reaktor 15 blev der ved beholderens sump tilført spildevand med slamind- 3 hold med en strømningshastighed af 1 m /t. Det kemiske oxy- 3 genbehov (C.O.D.) for det tilførte fluidum var 3000 g pr. m .Example 10 In a cylindrical reaction vessel with a space content 3 of 6 m, a post-sedimentation device such as the one shown in FIG. 1. The distance between the two horizontal planes 10 and 11 which caused the effect obtained by the sludge sedimentation device was 25 cm. To this reactor 15, wastewater of sludge content at the sump of the vessel at a flow rate of 1 m / h was added to the sump of the vessel. The chemical oxygen demand (C.O.D.) of the supplied fluid was 3000 g / ml. m.
Den periode, i hvilken spildevandet forblev i anlægget, var på 4 timer.The period during which the wastewater remained in the plant was 4 hours.
20 Indledningsvis var der til reaktoren som podnings materiale tilført et slam hidrørende fra en slamfermenteringsbeholder i et kommunalt renseanlæg for spildevand. Efter et kort tilpasningstidsrum androg den udviklede gasmængde 1 m /t, og den havde et methan- eller naturgasindhold på ca. 90 26 rumfangsprocent.Initially, as a graft material, a sludge from a sludge fermentation vessel was added to the reactor in a municipal wastewater treatment plant. After a short adjustment period, the gas volume developed was 1 m / h and had a methane or natural gas content of approx. 90 26% by volume.
Tilvæksten eller forøgelsen af slam var ganske ringe, hvad der er et iboende træk ved anaerobisk nedbrydning.The addition or increase of sludge was quite low, which is an inherent feature of anaerobic degradation.
Det syntes at være praktisk muligt at udskille slammet fra strømningen på en så effektiv måde, at der kunne opretholdes 30 en koncentration på 35-40 g organisk slammateriale pr. liter fluidum i reaktoren.It appeared to be practically feasible to separate the sludge from the stream in such an effective way that a concentration of 35-40 g of organic sludge per unit could be maintained. liter of fluid in the reactor.
Der indtraf ingen forstyrrelser under kontinuerlig drift, og effektiviteten er bevist af den kendsgerning, at der ved 4 timers varighed af væskens ophold i anlægget blev kon-35 stateret en opholdstid for slammateriale på 25 dage.No interruptions occurred during continuous operation, and the efficiency is proven by the fact that at 4 hours of liquid stay in the plant, a residence time of 25 days for sludge material was found.
o 147971 7o 147971 7
Der er således på særdeles økonomisk måde opnået en rensning af spildevand ved hjælp af et anlæg ifølge opfindelsen, mens der er genvundet methan, der kunne anvendes som energikilde.Thus, purification of wastewater has been achieved in a very economical way by means of a plant according to the invention, while methane has been recovered which could be used as an energy source.
5 Det rensede vand viste egenskaber svarende til milieu myndighedernes krav.5 The purified water showed properties corresponding to the requirements of the environmental authorities.
10 15 20 25 30 3510 15 20 25 30 35
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7606904 | 1976-06-24 | ||
NL7606904A NL166000C (en) | 1976-06-24 | 1976-06-24 | APPARATUS FOR SEPARATING GAS, SLUDGE AND LIQUID IN AN ANAEROBIC TREATMENT PLANT. |
Publications (3)
Publication Number | Publication Date |
---|---|
DK279477A DK279477A (en) | 1977-12-25 |
DK147971B true DK147971B (en) | 1985-01-21 |
DK147971C DK147971C (en) | 1985-09-02 |
Family
ID=19826442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK279477A DK147971C (en) | 1976-06-24 | 1977-06-23 | PLANT FOR ANAEROBIC WASTE CLEANING |
Country Status (9)
Country | Link |
---|---|
AT (1) | AT356021B (en) |
BE (1) | BE856081A (en) |
CA (1) | CA1092259A (en) |
DE (1) | DE2728585C3 (en) |
DK (1) | DK147971C (en) |
FR (1) | FR2355783A1 (en) |
GB (1) | GB1579277A (en) |
NL (1) | NL166000C (en) |
SE (1) | SE425307B (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4165285A (en) * | 1976-06-24 | 1979-08-21 | N.V. Centrale Suiker Maatschappij | Combined anaerobic reactor and settler |
NL173738C (en) * | 1978-05-23 | 1988-10-17 | Gist Brocades Nv | ANAEROBIC PURIFIER. |
NL7811999A (en) * | 1978-12-08 | 1980-06-10 | Stork Amsterdam | METHOD AND APPARATUS FOR ANAEROOB CONVERTING ORGANIC MATERIAL INTO A WATERY MEDIUM |
DE3222218C2 (en) * | 1982-06-12 | 1992-10-22 | Lehrter Zucker AG, 3160 Lehrte | Preferably cubic reaction tank for anaerobic wastewater treatment |
GB8328598D0 (en) * | 1983-10-26 | 1983-11-30 | Univ Cardiff | Hydraulic digestion |
DE4320096C2 (en) * | 1993-06-17 | 1996-03-14 | Passavant Werke | Biogas reactor for anaerobic treatment of waste water |
DE102009053862A1 (en) | 2009-11-20 | 2011-05-26 | Ingenieurgesellschaft Dr. Siekmann + Partner Mbh | Plant, useful for anaerobic stabilization of pumpable organic residues, comprises closed rectangular container with inlet for untreated residue, outlet for treated residue, means for discharge of biogas, heating, mixing, and power house |
-
1976
- 1976-06-24 NL NL7606904A patent/NL166000C/en not_active IP Right Cessation
-
1977
- 1977-06-22 SE SE7707250A patent/SE425307B/en not_active IP Right Cessation
- 1977-06-23 DK DK279477A patent/DK147971C/en not_active IP Right Cessation
- 1977-06-23 FR FR7719252A patent/FR2355783A1/en active Granted
- 1977-06-23 CA CA281,279A patent/CA1092259A/en not_active Expired
- 1977-06-24 BE BE178755A patent/BE856081A/en not_active IP Right Cessation
- 1977-06-24 GB GB26551/77A patent/GB1579277A/en not_active Expired
- 1977-06-24 DE DE2728585A patent/DE2728585C3/en not_active Expired
- 1977-06-24 AT AT450377A patent/AT356021B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
ATA450377A (en) | 1979-08-15 |
NL166000B (en) | 1981-01-15 |
DK279477A (en) | 1977-12-25 |
DE2728585A1 (en) | 1977-12-29 |
DE2728585C3 (en) | 1980-04-17 |
NL166000C (en) | 1981-06-15 |
NL7606904A (en) | 1977-12-28 |
SE425307B (en) | 1982-09-20 |
FR2355783A1 (en) | 1978-01-20 |
AT356021B (en) | 1980-04-10 |
DE2728585B2 (en) | 1979-08-09 |
BE856081A (en) | 1977-12-27 |
DK147971C (en) | 1985-09-02 |
SE7707250L (en) | 1977-12-25 |
CA1092259A (en) | 1980-12-23 |
GB1579277A (en) | 1980-11-19 |
FR2355783B1 (en) | 1982-05-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FI101291B (en) | Anaerobic wastewater treatment plant | |
KR101397780B1 (en) | Process and reactor for anaerobic waste water purification | |
US3232434A (en) | Device for purifying waste waters | |
NO316964B1 (en) | Sedimentation device for a fluid containing liquid, gas and particulate matter, cleaning device equipped with the sedimentation device, and methods for purifying wastewater | |
RU1825349C (en) | Apparatus for anaerobic treatment of waste water | |
US3951816A (en) | Clarification tank | |
CS268523B2 (en) | Sewage anaerobe treatment plant | |
AU2012252015B2 (en) | Rapid flotation device for water laden with suspended matter, and method for implementing same | |
JP5868059B2 (en) | Waste water treatment apparatus and operation method thereof | |
RU2522105C2 (en) | Upward flow reactor with controlled circulation of biomass | |
EP0193999B1 (en) | Plant for the anaerobic purification of waste water | |
PT2632859E (en) | Method for separating liquid from suspended matter in a sludge and installation therefor | |
SK138793A3 (en) | Method and inlet device for feeding flat sand traps and settling tanks | |
BR112016011437B1 (en) | PROCESS AND DEVICE FOR TREATMENT AND PROCESSING OF SLUDGE AND SOLIDIFIED ORGANIC SLUDGE CAKE | |
DK147971B (en) | PLANT FOR ANAEROBIC WASTE CLEANING | |
US4165285A (en) | Combined anaerobic reactor and settler | |
KR102397619B1 (en) | Wastewater treatment system with improved treating efficiency | |
KR100874477B1 (en) | Sedimentation tank for water treatment | |
SU1036237A3 (en) | Apparatus for treating wastes (modifications) | |
CN205590364U (en) | Integration sewage primary treatment device | |
KR102397623B1 (en) | Wastewater treatment system with improved treating efficiency | |
NO317206B1 (en) | Flocculation separation apparatus | |
KR102354522B1 (en) | Wastewater treatment system with improved treating efficiency | |
NO163428B (en) | ANALOGUE EFFECTIVE FIRE DETECTOR. | |
DK0453881T3 (en) | Process for biological purification of wastewater and plant for carrying out the process |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUP | Patent expired |