DK200400116U3 - mini Wastewater Treatment Plant - Google Patents
mini Wastewater Treatment Plant Download PDFInfo
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- DK200400116U3 DK200400116U3 DKBA200400116U DK200400116U3 DK 200400116 U3 DK200400116 U3 DK 200400116U3 DK BA200400116 U DKBA200400116 U DK BA200400116U DK 200400116 U3 DK200400116 U3 DK 200400116U3
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- 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
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Description
DK 2004 00116 U3DK 2004 00116 U3
FIG. 1 i DK 2004 00116 U3FIG. 1 in DK 2004 00116 U3
Teknisk områdeTechnical area
Den foreliggende frembringelse angår et anlæg til brug ved biologisk rensning af spildevand. Anlægget ifølge frembringelsen er især et minirenseanlæg af typen “dykket beluftet biofilteranlæg” og er særegent ved, at nedbrydningen af organisk materiale og nedbrydningen af ammonium/ammoniak sker i to eller flere, af et fældningskammer adskilte sektioner, og at det omfatter en beluftet forklaringstank.The present invention relates to a plant for use in biological purification of wastewater. The plant according to the invention is in particular a mini-purification plant of the type "immersed aerated biofilter plant" and is peculiar in that the decomposition of organic matter and the decomposition of ammonium / ammonia occur in two or more sections of a precipitation chamber, and that it includes an aerated explanatory tank.
Baggrund for frembringelsenBackground to the creation
Adskillige private husstande, der ikke er tilsluttet det offentlige kloaknet og tilknyttede renseanlæg, benytter forskellige former for minirenseanlæg til behandling af deres spildevand. Sådanne minirenseanlæg er ofte simple “septictanke”, som anvender anaerob gæring ved lav temperatur, der tager lang tid, og hvor afløbet som oftest går til en sivebrønd - en særlig form for opsamlingsbeholder, hvorfra vandet efterhånden siver ud i de omgivende jordlag. I Danmark er der over 300.000 helårshuse, hvor man håndterer spildevandet alene ved hjælp af septictanke. Anlæggene kan dog også være af typen “dykket beluftet biofilteranlæg”, hvoraf der findes flere udgaver på markedet. Disse har det til fælles, at hele den biologiske del findes i en enkelt sektion, hvilket medfører uhensigtsmæssig drift og undertiden store udsving i effektiviteten. Specielt er det ofte ikke muligt at overholde kravene til nitrifikation af det rensede spildevand (skærpet organisk rensning).Several private households that are not connected to the public sewerage network and associated wastewater treatment plants use different types of wastewater treatment plants to treat their wastewater. Such mini-purification plants are often simple "septic tanks", which use long-term anaerobic fermentation, and where the drain most often goes to a seepage well - a special form of collection vessel from which the water gradually seeps into the surrounding soil layers. In Denmark, there are over 300,000 year-round houses, where waste water is handled solely by means of septic tanks. However, the plants can also be of the type “dive aerated biofilter plant”, of which there are several versions on the market. These have in common that the entire biological part is found in a single section, resulting in inappropriate operation and sometimes large fluctuations in efficiency. In particular, it is often not possible to comply with the requirements for nitrification of the purified wastewater (sharpened organic purification).
Dette skyldes den kendsgerning, at de nitrificerende autotrofe bakterier er i konstant konkurrence med de heterotrofe bakterier (som er bakterier, der udnytter organisk materiale som kulstofkilde), og at de autotrofe bakterier derved har vanskeligt ved at klare sig, fordi de vokser væsentligt langsommere (lang delingstid) og med en meget mindre udbyttekonstant end de heterotrofe bakterier. Disse sidstnævnte bakterier producerer omkring 10 gange så meget slam pr. energienhed som de nitrificerende bakterier. Dette slam tager plads op og skærper konkurrencen om pladserne yderligere.This is due to the fact that the nitrifying autotrophic bacteria are in constant competition with the heterotrophic bacteria (which are bacteria that utilize organic matter as a carbon source) and that the autotrophic bacteria thereby have difficulty coping because they grow significantly slower ( long partition time) and with a much smaller yield constant than the heterotrophic bacteria. These latter bacteria produce about 10 times as much sludge per day. energy unit such as the nitrifying bacteria. This sludge takes up space and further intensifies competition for the seats.
Hvis man betragter vandets vej gennem et biofilter, vil man se, at de bakterier, der først koloniserer sig i starten af filteret, er de heterotrofe bakterier. Om der herefter er plads 2 DK 2004 00116 U3 til de nitrificerende bakterier eller ikke, vil afhænge af koncentrationen af organisk stof i biofilterets indløb.If you consider the path of water through a biofilter, you will see that the bacteria that first colonize at the beginning of the filter are heterotrophic bacteria. Whether there is room 2 DK 2004 00116 U3 for the nitrifying bacteria or not will depend on the concentration of organic matter in the inlet of the biofilter.
Den foreliggende frembringelse er baseret på den antagelse, at man ved at adskille den organisk nedbrydende del og den nitrificerende del fra hinanden i en fremgangsmåde til biologisk rensning af spildevand vil kunne give de nitrificerende bakterier bedre forhold at virke under. Hvis man samtidig foretager en indledende beluftning til stripning af H2S og andre gasser, opnår man en forbedret rensning af spildevandet i den biologiske del af processen. De gasser, der dannes i den anaerobe del af en septictank, har nemlig ofte en hæmmende indvirkning på den biologiske rensning af spildevandet. Ved udøvelse af fremgangsmåden ifølge opfindelsen i pilotskala viste det sig, at pH-værdien stiger hen over anlægget, når der foretages en indledende beluftning, hvor den som følge af nitrifikationen ellers måtte forventes at falde. Dette kan kun forklares ved, at der ved beluftningen fjernes en syre, og at denne syre er H2S. Derfor er der en forbedret biologisk aktivitet i det efterfølgende trin, hvor vandet nu er i det mindste delvis renset for H2S. Ved at belufte vandet og dermed strippe H2S og andre gasser opnår man derfor, at spildevandet renses bedre i den biologiske del af minirenseanlægget. Man opnår i øvrigt også en fjernelse af de mange bakteriedræbende stoffer (klorin, acetone etc.), som spildevand fra husstande kan indeholde, hvorved man skåner systemets bakterieflora og holder denne effektiv.The present invention is based on the assumption that by separating the organic decomposing part and the nitrifying part from one another in a process for the biological purification of wastewater, the nitrifying bacteria can be better affected. At the same time, if an initial aeration is used to strip H2S and other gases, an improved purification of the wastewater is achieved in the biological part of the process. The gases that form in the anaerobic part of a septic tank often have an inhibitory effect on the biological purification of the wastewater. In practicing the process of the invention on a pilot scale, it was found that the pH value rises above the plant when an initial aeration is made, where it is otherwise expected to decrease as a result of nitrification. This can only be explained by the removal of an acid by aeration and that this acid is H2S. Therefore, there is an improved biological activity in the subsequent step, whereby the water is now at least partially purified by H2S. Therefore, by aerating the water and thus stripping H2S and other gases, the wastewater is better purified in the biological part of the mini-purification plant. Furthermore, the many bactericidal substances (chlorine, acetone etc.) that household wastewater can contain, are also removed, thus protecting the bacterial flora of the system and keeping it effective.
Detaljeret beskrivelse af frembringelsenDetailed description of the production
Frembringelsen angår derfor et anlæg på basis af en fremgangsmåde til biologisk rensning af spildevand, hvilken fremgangsmåde er særegen ved, at den i rækkefølge omfatter: a) et beluftningstrin til stripning af H2S og andre gasser og fjernelse af bakteriedræbende stoffer fra vandet, b) et trin til nedbrydning af organisk materiale, c) et slamudfældningstrin, d) et klaringstrin og e) et nitrifikationstrin, 3 DK 2004 00116 U3 efterfulgt af et afsluttende efterklaringstrin.The production therefore relates to a plant based on a method for biological purification of wastewater, which method is characterized in that it comprises in sequence: a) an aeration step for stripping H2S and other gases and removing bactericidal substances from the water, b) a c) a sludge precipitation step, d) a clearance step, and e) a nitrification step, followed by a final clarification step.
Det er i princippet kendt at opdele den biologiske rensning af spildevand i flere trin; jvf. f.eks. “Spildevandsrensning, biologisk og kemisk”, 2. udgave, Polyteknisk Forlag, 1992, side 202-204. Dette fremgår også af US patent nr. 3.764.523, især spaltel, linie 24-30 og linie 55-63, og spalte 2, linie 25-30. Den i dette US patent omhandlede fremgangsmåde til behandling af BOD-holdigt spildevand vedrører imidlertid ikke minirenseanlæg, men derimod større anlæg, såsom kommunale renseanlæg, hvor man på grund af den væsentligt større vandmængde generelt ikke møder de samme problemer som i små anlæg.It is known in principle to divide the biological treatment of wastewater into several stages; cf. “Wastewater treatment, biological and chemical”, 2nd edition, Polytechnic Publishing House, 1992, pages 202-204. This is also apparent from U.S. Patent No. 3,764,523, in particular column counts, lines 24-30 and lines 55-63, and column 2, lines 25-30. However, the method of treating BOD-containing wastewater described in this US patent does not concern mini-purification plants, but larger plants, such as municipal wastewater treatment plants, which generally do not meet the same problems as in small plants because of the considerably larger water volume.
Ligeledes er det i princippet kendt at belufte spildevand, der skal renses, i en forklaringstank forud for den egentlige biologiske rensning.It is also known in principle to aerate wastewater to be purified in an explanatory tank prior to actual biological purification.
Det er imidlertid overraskende og uventet, at man ved at benytte metoden, der ligger til grund for frembringelsen, kan opnå en så markant forbedring af nitrifi kation en, at det er muligt at komme væsentligt under de krav, som myndighederne stiller til indholdet af ammoniak/ammonium i renset spildevand (hvor grænseværdien i Danmark er 5,0 mg/liter).However, it is surprising and unexpected that, by using the method of production, one can achieve such a marked improvement in nitrification that it is possible to significantly meet the requirements of the authorities for the content of ammonia. / ammonium in purified wastewater (where the limit value in Denmark is 5.0 mg / liter).
Frembringelsen angår derfor et anlæg, især et minirenseanlæg af typen “dykket beluftet biofilteranlæg”. Dette anlæg omfatter en beluftet forklaringsenhed, en enhed til nedbrydning af organisk materiale, en første slamudskillelsesenhed, en nitrifikati on senhed og en afsluttende slamudskillelsesenhed. Forklaringsenheden omfatter midler til tilvejebringelse af beluftning.The production therefore relates to a plant, especially a mini-purification plant of the type "dive aerated biofilter plant". This plant includes an aerated explanation unit, an organic material degradation unit, a first sludge separation unit, a nitrification unit, and a final sludge separation unit. The explanatory unit comprises means for providing aeration.
Ifølge en særlig foretrukken udførelsesform er det omhandlede anlæg et minirenseanlæg af den art, der betegnes et dykket beluftet biofilteranlæg, og som i den foretrukne udførelsesform har en kapacitet på mellem 5 og 30 personækvivalenter (PE). I et sådant anlæg deles og adskilles den biologiske del af et fældningskammer, hvilket medfører en 4 DK 2004 00116 U3 mere stabil rensningsproces, da de nitrificerende bakterier så at sige far “deres egen” biofiltersektion, efter at det organiske materiale er blevet nedbrudt og slammet er bundfældet. Dermed er koncentrationen af organisk stof i indløbet til det efterfølgende kammer blevet kraftigt reduceret. Dette medfører betydeligt mere stabile forhold i anlægget med en mere optimal og effektiv rensning til følge.According to a particularly preferred embodiment, the plant in question is a mini-purification plant of the kind referred to as a dive aerated biofilter plant and which in the preferred embodiment has a capacity of between 5 and 30 person equivalents (PE). In such a plant, the biological part of a precipitation chamber is divided and separated, which results in a more stable purification process, since the nitrifying bacteria, so to speak, father "their own" biofilter section after the organic material has been decomposed and sludged. is settled. Thus, the concentration of organic matter in the inlet to the subsequent chamber has been greatly reduced. This results in significantly more stable conditions in the plant, resulting in more optimal and efficient cleaning.
Udformningen af dette foretrukne minirenseanlæg er vist på fig. 1, hvoraf det fremgår, at anlægget består af en beluftet forklaringstank 1 og et primærkammer 2 med et dykket biofilter 3. Dette biofilter er beluftet af en diffusor 4, der er monteret under filter-elementet. Diffusoren sørger samtidig for cirkulation af spildevandet gennem filteret, således at der skabes kontakt mellem spildevandet og bakterierne på filterhuden. En bundfældningstank 5 opsamler slammet fra den biologiske proces. Dette slam returneres til forklaringstanken 1 ved hjælp af et pumpesystem, fortrinsvis en mammutpumpe 6.The design of this preferred mini cleaning system is shown in FIG. 1, showing that the plant consists of an aerated explanatory tank 1 and a primary chamber 2 with a submerged biofilter 3. This biofilter is aerated by a diffuser 4 mounted below the filter element. At the same time, the diffuser circulates the wastewater through the filter, thus creating contact between the wastewater and the bacteria on the filter skin. A settling tank 5 collects the sludge from the biological process. This sludge is returned to the explanatory tank 1 by means of a pump system, preferably a mammoth pump 6.
Det delvist rensede spildevand ledes derefter gennem en vertikal klaringstank 7 til sekundærkammeret 8. Dette kammer er på samme måde som primærkammeret 2 udstyret med et dykket biofilter 3' beluftet af en diffusor 4', der er monteret under filterelementet, og en bundfældningstank 5', som opsamler slammet.The partially purified wastewater is then passed through a vertical clearance tank 7 to the secondary chamber 8. This chamber is similar to the primary chamber 2 equipped with a dive biofilter 3 'aerated by a diffuser 4' mounted below the filter element and a settling tank 5 '. which collects the sludge.
Det er vigtigt, at der foretages en mellemfældning i den første bundfældningstank 5, fordi vandmængderne er små, og fordi der ikke må føres slam med over i nitrifika-tionstrinnet.It is important that an intermediate precipitate be made in the first settling tank 5, because the water volumes are small and because no sludge is allowed to be carried into the nitrification stage.
Spildevandet, som nu er renset, ledes derefter gennem en efterklaringstank 9 og via et udløb ud til recipienten.The wastewater, which is now purified, is then passed through a clarification tank 9 and via an outlet to the recipient.
Den på fig. 1 viste udførelsesform er integreret, idet den består af sammenbyggede enheder. Ifølge en anden foretrukken udførelsesform er det imidlertid muligt at sammensætte anlægget af flere separate enheder, der kan sammenbygges, og som hver for sig kan udskiftes. På fig. 2 ses en sådan enhed, der i den viste udformning kan tjene som 5 DK 2004 00116 U3 primær- eller sekundærkammer med tilknyttet klaringstank og således er udstyret med et dykket biofilter. Enheden kan også tjene som forklaringstank, hvor der så ikke indgår et biofilter. Den er på ydersiden forsynet med anordninger (11), hvormed den kan sammenbygges med en forudgående og/eller efterfølgende enhed på tæt måde. Disse anordninger har fortrinsvis form af riller og tappe, der kan fastlåses til hinanden.The FIG. 1 is integrated, consisting of assembled units. However, according to another preferred embodiment, it is possible to assemble the plant by several separate units which can be assembled and which can be replaced separately. In FIG. Figure 2 shows one such unit which in the embodiment shown can serve as a primary or secondary chamber with an associated clearance tank and is thus equipped with a dived biofilter. The unit can also serve as an explanatory tank where a biofilter is not included. It is provided on the outside with means (11), which it can be tightly coupled to a preceding and / or subsequent unit. These devices preferably take the form of grooves and pins that can be locked together.
Med denne udførelsesform bliver det muligt på simpel og bekvem måde at udskifte enkelte dele af anlægget eller at udvide dette, f.eks, hvis der bliver behov for forøget kapacitet i form af flere personækvivalenter. Fordelene herved er indlysende.With this embodiment, it is possible to replace or expand individual parts of the system in a simple and convenient way, for example, if increased capacity in the form of more personal equivalents is needed. The benefits of this are obvious.
De enkelte tanke i anlægget kan være fremstillet af plast, metal, glasfiber, beton eller andre materialer. Et typisk volumen af en tank til brug i forbindelse med det foretrukne minirenseanlæg vil ligge mellem 50 liter og 25 m3. Tankens indre er ved hjælp af en skillevæg (10), et rør eller lignende, som ikke når ned til bunden af tanken, opdelt i en rense- og en klaringsdel, hvor førstnævnte indeholder et biofilter (3). Der er i bunden af tanken anbragt en diffusor (4) eller lignende, der fordeler den tilvejebragte luft i tankens indhold af spildevand.The individual tanks in the plant can be made of plastic, metal, fiberglass, concrete or other materials. A typical volume of a tank for use in the preferred mini-purification plant will be between 50 liters and 25 m3. The interior of the tank, by means of a partition (10), a pipe or the like, which does not reach the bottom of the tank, is divided into a cleaning and a clearing part, the former containing a biofilter (3). A diffuser (4) or the like is provided at the bottom of the tank which distributes the air provided in the tank's contents of wastewater.
En sådan separat tank kan også anvendes til fældning af phosphor, idet det er hensigtsmæssigt at separere fjernelsen af phosphor fra den biologiske rensning for at undgå, at de til fældningen af phosphor anvendte fældningskemikalier kommer i kontakt med den biologiske del af renseanlægget.Such a separate tank can also be used for phosphorus precipitation, it being convenient to separate the removal of phosphorus from the biological purification to prevent the precipitating chemicals used for the phosphorus precipitation from contacting the biological part of the purification plant.
Den beluftede forklaringstank 1 har til formål ved stripning at fjerne de gasarter, der er dannet i den anaerobe del af en septictank eller lignende, fordi disse gasser har en hæmmende virkning på den biologiske rensning af spildevandet. Når sådanne gasser bliver strippet, opnår man en væsentligt bedre rensning af spildevandet i den biologiske del af minirenseanlægget. Man opnår som allerede nævnt også en fjernelse af de mange bakteriedræbende stoffer (klorin, acetone etc.), som spildevand fra husstande kan indeholde, og som, hvis de ikke fjernes, virker stærkt hæmmende på bakterierne i det efterfølgende biologiske rensningstrin.The aerated explanatory tank 1 aims at stripping away the gases formed in the anaerobic portion of a septic tank or the like because these gases have an inhibitory effect on the biological purification of the wastewater. When such gases are stripped, a significantly better purification of the wastewater is achieved in the biological part of the mini-purification plant. As already mentioned, one also achieves the removal of the many bactericidal substances (chlorine, acetone etc.) that household wastewater can contain and which, if not removed, strongly inhibit the bacteria in the subsequent biological purification step.
6 DK 2004 00116U36 DK 2004 00116U3
Forklaringstanken 1 kan have en vilkårlig udformning, såsom rund eller kantet, og kan være fremstillet af plast, metal, glasfiber, beton eller andre materialer. Et typisk volumen af tanken til brug i forbindelse med det oven for beskrevne foretrukne miniren-5 seanlæg vil ligge mellem 50 liter og 25 m3. Tankens indre er opdelt ved hjælp af en skillevæg, et rør eller lignende, som ikke når ned til bunden af tanken. Der er i bunden af tanken anbragt en diffusor eller lignende, der fordeler den tilvejebragte luft i tankens indhold af spildevand.The explanation tank 1 may be of any design, such as round or angular, and may be made of plastic, metal, fiberglass, concrete or other materials. A typical volume of the tank for use with the above-described preferred mini-purification plant will be between 50 liters and 25 m 3. The interior of the tank is divided by means of a partition, pipe or the like, which does not reach the bottom of the tank. A diffuser or similar is disposed at the bottom of the tank which distributes the air provided in the tank's wastewater content.
10 Diffusoren 4 afgiver typisk en luftmængde på mellem 10 og 100 liter luft pr. minut pr. 100 liter beholdervolumen.The diffuser 4 typically emits an air volume of between 10 and 100 liters of air per day. per minute 100 liters of container volume.
Spildevandet, der skal renses, og som kan hidrøre fra eksempelvis en septictank, ledes ind gennem en åbning i toppen af tankens ene kammer. Efter beluftning ledes spilde-15 vandet videre ind i minirenseanlæggets primærkammer 2 gennem en åbning i toppen af dette. I bundfældningstanken 5 udfældes slammet ved sedimentation, hvorefter slammet som nævnt sendes retur til forklaringstanken 1 ved pumpning.The wastewater to be purified, which may result from, for example, a septic tank, is passed through an opening at the top of one tank of the tank. After aeration, the waste water is further passed into the primary chamber 2 of the mini-purifier system through an opening at the top thereof. In the sedimentation tank 5, the sludge is precipitated by sedimentation, and as mentioned, the sludge is returned to the explanatory tank 1 by pumping.
Den beluftede forklaringstank er også anvendelig sammen med andre former for biolo-20 giske renseanlæg, såsom nedsivningsanlæg, biologiske sandfiltre, pilerensningsanlæg etc.The aerated explanatory tank is also applicable with other types of biological treatment plants, such as seepage plants, biological sand filters, arrow cleaning plants, etc.
Opfindelsen illustreres nærmere ved det følgende eksempel.The invention is further illustrated by the following example.
7 DK 2004 00116 U37 DK 2004 00116 U3
EKSEMPELEXAMPLE
Et minirenseanlæg som det på figuren viste, men uden forklaringstanken 1, blev monteret den 4. september 2001 (dag 0) med henblik på rensning af spildevand fra en septic-tank. Efter 14 dages indkøring viste målinger de følgende resultater (alle målinger af 5 ammonium, COD og BI5 er angivet i mg/liter):A mini-purification system as shown in the figure, but without the explanation tank 1, was installed on September 4, 2001 (day 0) for the purpose of purifying wastewater from a septic tank. After 14 days running, the measurements showed the following results (all measurements of 5 ammonium, COD and BI5 are given in mg / liter):
Dag Målested 15 19 22 24 PH 7,38 7,45 7,45 7,46 Indløb ammonium 43,8 47,2 49,9 44,8 COD 74,5 71,9 70,9 73,6 pH 7,78 8,29 7,98 7,86 Mellemklaring ammonium 46,8 39,9 41,2 43,9 COD 73,0 77,0 76,3 76,0 pH 8,19 8,42 8,30 8,04 Udløb ammonium 40,1 40,9 36,6 37,3 COD 75,3 58,3 62,1 76,5Day Measurement point 15 19 22 24 PH 7.38 7.45 7.45 7.46 Ammonium inlet 43.8 47.2 49.9 44.8 COD 74.5 71.9 70.9 73.6 pH 7.78 8.29 7.98 7.86 Ammonium Clearance 46.8 39.9 41.2 43.9 COD 73.0 77.0 76.3 76.0 pH 8.19 8.42 8.30 8.04 Expiration ammonium 40.1 40.9 36.6 37.3 COD 75.3 58.3 62.1 76.5
Efter de ovennævnte målinger blev der på dag 24 (den 28.september 2001) monteret en 10 beluftningsbrønd mellem septictank og indløb. Denne beluftningsbrønd var en tank med et volumen på 275 liter beluftet af en blæser med en ydelse på 40 liter luft pr. minut. Herefter målte man følgende resultater den 3. oktober 2001 (dag 30): 8 DK 2004 00116 U3Following the above measurements, on day 24 (September 28, 2001), a 10 aeration well was fitted between the septic tank and inlet. This aeration well was a tank with a volume of 275 liters aerated by a fan with a capacity of 40 liters of air per liter. minute. Subsequently, the following results were measured on October 3, 2001 (day 30): 8 DK 2004 00116 U3
Dag 30 Målested pH 8,27 Indløb ammonium 45,4 COD 70,9 pH 7,84 Mellemklaring ammonium 40,2 COD 76,5 PH 7,60 Udløb ammonium 4,05 COD 76,8Day 30 Measurement point pH 8.27 Ammonium inlet 45.4 COD 70.9 pH 7.84 Ammonium clearance 40.2 COD 76.5 PH 7.60 Ammonium outlet 4.05 COD 76.8
Den 5. oktober 2001 (dag 32) målte man sulfidindholdet før og efter beluftningsbrøn-den. Man fandt følgende resultater: Septictank: 23,4 mg/1; Indløb: 0,987 mg/1.On October 5, 2001 (day 32), the sulfide content was measured before and after the aeration well. The following results were found: Septictank: 23.4 mg / 1; Inlet: 0.987 mg / l.
Derefter er vandprøverne udtaget fra septictank, mellemklaringstank og udløb. Man fandt de følgende resultater: 9 DK 2004 00116 U3Then the water samples are taken from the septic tank, intermediate clearing tank and outlet. The following results were found: 9 DK 2004 00116 U3
Dag Målested 33 34 35 36 37 pH 7,53 7,56 7,47 7,43 7,49 Septictank ammonium 53,1 55,4 61,1 66,9 70,3 COD 72,3 65,3 67,0 63,4 62,3 pH 8,08 8,09 8,12 8,00 8,01 Mellemklar. ammonium 40,7 40,9 39,5 40,6 36,6 COD 60,5 63,0 66,2 76,7 74,1 pH 7,51 7,55 7,52 7,65 7,68 Udløb ammonium 0,748 0,0052 0,236 0,338 0,214 COD 76,5 75,7 75,5 75,3 76,5 På dag 36 (den 9. oktober 2001) var BI5-værdien 6,1. Grænseværdien er 10,0.Day Measurement point 33 34 35 36 37 pH 7.53 7.56 7.47 7.43 7.49 Septic tank ammonium 53.1 55.4 61.1 66.9 70.3 COD 72.3 65.3 67.0 63.4 62.3 pH 8.08 8.09 8.12 8.00 8.01 Medium. ammonium 40.7 40.9 39.5 40.6 36.6 COD 60.5 63.0 66.2 76.7 74.1 pH 7.51 7.55 7.52 7.65 7.68 Ammonium expiration 0.748 0.0052 0.236 0.338 0.214 COD 76.5 75.7 75.5 75.3 76.5 On day 36 (October 9, 2001), the BI5 value was 6.1. The limit value is 10.0.
Endelig fandt man på dagene 40, 42 og 44 (den 13., 15. og 17. oktober 2001) de følgende resultater: 10 DK 2004 00116 U3Finally, on Days 40, 42 and 44 (October 13, 15 and 17, 2001), the following results were found: 10 DK 2004 00116 U3
Dag 40 42 44 Målested pH 7,28 7,39 7,42 Septictank ammonium 71,9 83,6 83,0 Sulfid i septictank pH 8,07 8,05 8,05 Mellemklaring ammonium 49,3 49,8 55,7 PH 7,57 7,56 7,56 Udløb ammonium 1,62 0,405 0,804 BIS 5,04 7,64 På hele dag 43 havde husstanden, hvor anlægget er opstillet, været besøgt af 13 personer, som belastede anlægget i mange timer, uden at dette påvirkede anlæggets kapacitet i negativ retning.Day 40 42 44 Measurement point pH 7.28 7.39 7.42 Septic tank ammonium 71.9 83.6 83.0 Sulphide in septic tank pH 8.07 8.05 8.05 Medium clearance of ammonium 49.3 49.8 55.7 PH 7.57 7.56 7.56 Expired ammonium 1.62 0.405 0.804 BIS 5.04 7.64 On day 43, the household where the plant was set up had been visited by 13 people who loaded the plant for many hours, without that this adversely affected the plant's capacity.
i DK 2004 00116 U3 BRUGSMODELKRAV: L. Anlæg til biologisk rensning af spildevand, som er nyt ved, at det omfatter en be-luftet forklaringsenhed, en enhed til nedbrydning af organisk materiale, en første slamudskillelsesenhed, en nitrifikationsenhed og en afsluttende slamudskillelsesenhed.in DK 2004 00116 U3 USE MODEL REQUIREMENTS: L. Wastewater biological treatment plant, which is new in that it comprises an aerated exploration unit, an organic material decomposition unit, a first sludge separation unit, a nitrification unit and a final sludge separation unit.
2. Anlæg ifølge krav 1, som er nyt ved, at forklaringsenheden omfatter midler til tilvejebringelse af beluftning.Installation according to claim 1, which is new in that the explanatory unit comprises means for providing aeration.
3. Anlæg ifølge krav 1, som er nyt ved, at det er et minirenseanlæg bestående af en beluftet forklaringstank (1), et primærkammer (2) med et dykket biofilter (3), hvilket biofilter er beluftet af en diffusor (4), der er monteret under filterelementet, en bundfældningstank (5), der opsamler slammet fra den biologiske proces, idet slammet returneres til forklaringstanken (1) ved hjælp af et pumpesystem, fortrinsvis en mammutpumpe (6), en vertikal klaringstank (7), et sekundærkammer (8), der på samme måde som primærkammeret (2) er udstyret med et dykket biofilter (3') beluftet af en diffusor (4'), der er monteret under filterelementet, og en efterklaringstank (9), hvorfra det rensede vand via et udløb ledes ud til recipienten.The plant according to claim 1, which is new in that it is a mini-purification plant consisting of an aerated exploration tank (1), a primary chamber (2) with a dived biofilter (3), which biofilter is aerated by a diffuser (4), mounted beneath the filter element, a settling tank (5) which collects the sludge from the biological process, returning the sludge to the explaining tank (1) by means of a pump system, preferably a mammoth pump (6), a vertical clearing tank (7), a secondary chamber (8), similar to the primary chamber (2), is provided with a plunger biofilter (3 ') aerated by a diffuser (4') mounted below the filter element and a clarification tank (9) from which the purified water via an outlet is discharged to the recipient.
4. Anlæg ifølge krav 3, som er nyt ved, at det er sammensat af separate enheder, der kan sammenbygges.System according to claim 3, which is new in that it is composed of separate units that can be assembled.
5. Anlæg ifølge krav 4, som er nyt ved, at det omfatter enheder, der tjener som primær- og sekundær kammer, og hvor hver sådan enhed består af en rense- og en klaringsdel adskilt af en skillevæg (10), idet rensedelen indeholder et biologisk filter (3) og en diffusor (4) til beluftning.The plant according to claim 4, which is new in that it comprises units serving as primary and secondary chambers, and each such unit consisting of a cleaning and a clearing part separated by a partition (10), the cleaning part containing a biological filter (3) and a diffuser (4) for aeration.
6. Anlæg ifølge krav 4 eller 5, som er nyt ved, at hver enhed på ydersiden er forsynet med anordninger (11), hvormed det kan sammenbygges med en efterfølgende enhed på tæt måde.System according to claim 4 or 5, which is new in that each unit on the outside is provided with devices (11), which can be tightly coupled to a subsequent unit.
DK 2004 00116 U3 2 7. Beluftet forklaringstank med rund eller kantet form til anvendelse i et anlæg ifølge krav 6, som er ny ved, at den er delt af en skillevæg, et rør eller en lignende anordning, der ikke når ned til bunden, at der til luftindblæsning er anbragt en diffusor eller lignende i bunden, og at den fortrinsvis har et volumen på mellem 50 liter og 25 m3.EN 2004 00116 U3 2 7. Aerated round or angled explanatory tank for use in a plant according to claim 6, which is new in that it is divided by a partition, pipe or similar device which does not reach the bottom, that a diffuser or the like is provided at the bottom for air supply and preferably has a volume of between 50 liters and 25 m3.
5 DK 2004 00116 U3 a & S; S" σ' S* σ'5 DK 2004 00116 U3 a &S; S "σ 'S * σ'
Ff C. 1 DK 2004 00116 U3Ff C. 1 DK 2004 00116 U3
HG. 2HG. 2
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DKBA200400116 DK200400116U3 (en) | 2004-04-01 | 2004-04-01 | mini Wastewater Treatment Plant |
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DKBA200400116 DK200400116U3 (en) | 2004-04-01 | 2004-04-01 | mini Wastewater Treatment Plant |
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