US20050244282A1 - Biological wastewater purification device - Google Patents

Biological wastewater purification device Download PDF

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Publication number
US20050244282A1
US20050244282A1 US11/104,368 US10436805A US2005244282A1 US 20050244282 A1 US20050244282 A1 US 20050244282A1 US 10436805 A US10436805 A US 10436805A US 2005244282 A1 US2005244282 A1 US 2005244282A1
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US
United States
Prior art keywords
valve
line
pump
purification device
secondary line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/104,368
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English (en)
Inventor
Markus Baumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of US20050244282A1 publication Critical patent/US20050244282A1/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1242—Small compact installations for use in homes, apartment blocks, hotels or the like
    • C02F3/1247—Small compact installations for use in homes, apartment blocks, hotels or the like comprising circular tanks with elements, e.g. decanters, aeration basins, in the form of segments, crowns or sectors
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00—Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20—Controlling water pollution; Waste water treatment
    • Y02A20/208—Off-grid powered water treatment
    • 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

Definitions

  • the invention concerns a biological wastewater purification device with a multi-chamber tank with separating walls to divide the tank into at least one pre-treatment chamber containing activated sludge and at least one purification chamber, as well as pump installations for transporting and treating wastewater.
  • small wastewater treatment systems contain a plurality of pumps such as a clear water removal pump, a sludge pump, a ventilator, etc. Additional pumps may also be provided to transport and treat, e.g. aerate, the wastewater during the purification process.
  • This invention is therefore based on the task of creating a wastewater purification device of the above-mentioned type, which requires less equipment-related expenditure.
  • the wastewater purification device is characterised in that a distributor for dividing the pump output into at least one main flow and at least one secondary flow is connected downstream of at least one pump installation.
  • the distributor is preferably configured to permit relatively accurate dosing, especially of the secondary flow.
  • the invention can be used in such a way that, for example, the operation to return the sludge to the pre-treatment chamber, which need only take place from time to time and with relatively small quantities of water and sludge, is performed by the secondary flow.
  • Sludge return is an operation used in activated sludge wastewater purification processes to supply the fresh wastewater flowing into the sedimentation chamber or pre-treatment chamber with sludge in which micro-organisms have already formed.
  • Valves may be provided, which, for example, let through a certain limited volume of water at the start or end of the pumping operation.
  • the pump according to this invention can, for example, pump the water in the purification chamber through a Venturi aerator.
  • Other pump tasks are also feasible.
  • a suitable valve providing a simple means of allowing a dosed, relatively small volume of water to flow into the secondary line comprises, for example, a valve ball positioned so that it can move between two valve seats in a rising section of the secondary line.
  • the valve ball When the pump is switched on, the valve ball is lifted off the bottom seat and carried upwards with the flow of water towards the top valve seat. During this time, water can flow past the valve ball into the secondary line until the ball comes into contact with the top valve seat, where it is held fast by the pressure of the rising water. If the pump is turned off, the ball will sink back down onto the bottom valve seat.
  • this is a solution allowing a limited, dosed quantity of water to flow into the secondary line at the start of the pumping operation.
  • a valve of this type can be supplemented by an upstream or downstream non-return valve.
  • a suitable valve might comprise a valve ball which can move to and fro between two valve seats located at an outlet line of the pump on the one hand and the secondary line on the other hand, and which has a water reservoir in a rising section of the main line. If the pump is switched on, the ball is lifted upwards towards the valve seat on the secondary line, and the secondary line is closed off.
  • the water flows into the main line and then into the water reservoir. If the pump is switched off, the ball falls back onto the valve seat on the outlet line of the pump. The water collected in the water reservoir flows back into the secondary line, which is now open.
  • valve types merely serve as examples of numerous other possibilities.
  • FIGS. 1 a and 1 b show a first embodiment of a valve envisaged for the secondary line in accordance with the invention, in different operating positions;
  • FIG. 2 a to 2 c show an equivalent view of a second embodiment of a valve
  • FIG. 3 a to 3 e show a third embodiment of a valve according to the invention.
  • FIGS. 4 a and 4 b show a fourth embodiment of a valve.
  • FIG. 1 a is a diagrammatic representation of a purification chamber 10 containing more or less purified water up to water level 12 .
  • a pump 14 from which proceeds a pump outlet line 16 which immediately branches into a main line 18 and a secondary line 20 .
  • the main line feeds into a Venturi aerator 22 and an air line 24 intersects with the narrow portion of said Venturi aerator.
  • valve seats 26 , 28 facing each other at a distance, between which a ball 30 can be moved up and down.
  • valve ball 30 When pump 14 is switched on, valve ball 30 is gradually lifted off the bottom valve seat 26 until it comes into contact with top valve seat 28 . As the ball rises, water flows past the ball and through secondary line 20 . This water flow stops as soon as the ball comes into contact with the upper valve seat 28 . It is held in this position by the pressure of the water for as long as pump 14 stays in operation. When pump 14 is switched off, valve ball 30 sinks back down onto the bottom valve seat 26 .
  • This process is repeated the next time the pump is switched on. This provides a means of occasionally pumping limited volumes of sludge-containing water back into the pre-treatment chamber (not shown) via secondary line 20 without the need for a separate pump.
  • FIG. 2 a to 2 c show another embodiment of the invention. This embodiment is based on the embodiment of FIGS. 1 a and 1 b, but also includes a non-return valve in addition. The same reference numerals have been assigned to components already mentioned in the context of FIG. 1 .
  • FIG. 2 a to 2 c also provide for the same valve ball 30 as shown in FIG. 1 , which can be displaced between bottom valve seat 26 and top valve seat 28 in the manner already described.
  • valve ball 34 Downstream of the arrangement comprising valve ball 30 with the two valve seats 26 , 28 there is a non-return valve 32 .
  • the non-return valve is contrived as a ball valve. It comprises a valve ball 34 , which, in the upstream direction, can rest against a valve seat 36 , thereby preventing a return flow.
  • Valve ball 34 is located inside a slightly broadened chamber 38 , in which a ball support 40 is disposed, against which the ball rests when the non-return valve is opened ( FIG. 2 c ).
  • FIG. 2 a shows the position in which pump 14 is switched off.
  • valve ball 30 is gradually lifted upwards.
  • valve ball 34 of non-return valve 32 This flow of water lifts valve ball 34 of non-return valve 32 up off its valve seat 36 and presses the ball against support 40 .
  • valve ball 30 comes into contact with the top valve seat 28 ( FIG. 2 c )
  • the flow of rising water is interrupted.
  • Valve ball 34 of the non-return valve 32 sinks back down onto its valve seat 36 .
  • FIG. 3 a to 3 e are equivalent to FIG. 2 a to 2 c, except that in FIG. 3 a to 3 e, the non-return valve is disposed before or upstream of valve ball 30 with the two valve seats 26 , 28 .
  • the same reference numerals will be used as in FIG. 2 a to 2 c and, to some extent, in FIGS. 1 a and 1 b.
  • FIG. 3 a shows the position in which the pump is switched off. If pump 14 is switched on, valve ball 34 of non-return valve 32 is first lifted off its valve seat 36 ( FIG. 3 b ). The flow of water can now enter secondary line 20 so that valve ball 30 is lifted up from its bottom valve seat 26 to its top valve seat 28 . Water flows through secondary line 20 during this time. As soon as valve ball 30 reaches the top valve seat 28 ( FIG. 3 c ), the flow of water in secondary line 20 is interrupted. Valve ball 34 of non-return valve 32 therefore sinks back down onto its valve seat 36 ( FIG. 3 d ). When the pump is switched off, valve ball 30 also sinks back down onto its bottom valve seat 26 ( FIG. 3 e ).
  • FIGS. 4 a and 4 b show an arrangement which functions according to a different principle than the embodiments described thus far.
  • a purification chamber 42 there is a pump 44 from which a pump outlet line 46 proceeds in a vertical direction.
  • a bottom, non-designated first section of pump outlet line 26 Adjoining a bottom, non-designated first section of pump outlet line 26 , the latter runs into a broadened section 48 , and at the transition between the bottom section and the top, broadened section 48 there is a valve seat 50 , on which a valve ball 52 is seen resting in FIG. 4 a. Disposed concentrically inside this broadened section 48 is inlet 54 of the secondary line 56 , which is equivalent in terms of the way it functions to the secondary line 20 of FIG. 1 .
  • valve seat 58 At this inlet 54 of secondary line 56 .
  • This valve seat 58 lies directly opposite bottom valve seat 50 and is disposed coaxially to the latter.
  • the main line 60 which corresponds to the main line 18 of the previously described embodiments, branches off from the broadened section 48 of pump outlet line 46 of the embodiment according to FIGS. 4 a and 4 b.
  • Main line 60 has a water reservoir 62 in a rising section adjoining the broadened section 48 of pump outlet line 46 .
  • FIGS. 4 a and 4 b The way in which the embodiment of FIGS. 4 a and 4 b functions will now be described below.
  • FIG. 4 a shows the position in which pump 44 is switched off.
  • Valve ball 52 rests against its valve seat 50 .
  • valve ball 52 is lifted upwards from bottom valve seat 50 towards valve seat 58 at the inlet of secondary line 56 .
  • the water flows through the main line 60 .
  • valve ball 52 sinks back down to its bottom valve seat 50 .
  • this arrangement operates as a non-return valve.
  • the water collected in the water reservoir 62 cannot run off via the main line because of the heights involved and therefore flows back into the broadened section 48 of the pump outlet line and from here through secondary line 56 .
  • 4 a and 4 b in particular are merely diagrammatic illustrations. It is obvious that the volume of water reservoir 62 and of the broadened section 48 , and the arrangement and dimensions of secondary line 56 must be chosen so that a given volume of water can flow away via secondary line 56 .

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Biological Treatment Of Waste Water (AREA)
  • Multiple-Way Valves (AREA)
  • Sewage (AREA)
  • Activated Sludge Processes (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Fertilizers (AREA)
US11/104,368 2004-04-29 2005-04-12 Biological wastewater purification device Abandoned US20050244282A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP20040010152 EP1591424B1 (de) 2004-04-29 2004-04-29 Biologische Klärvorrichtung
EP04010152.9 2004-04-29

Publications (1)

Publication Number Publication Date
US20050244282A1 true US20050244282A1 (en) 2005-11-03

Family

ID=34924777

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/104,368 Abandoned US20050244282A1 (en) 2004-04-29 2005-04-12 Biological wastewater purification device

Country Status (7)

Country Link
US (1) US20050244282A1 (no)
EP (1) EP1591424B1 (no)
AT (1) ATE513791T1 (no)
CA (1) CA2504319C (no)
ES (1) ES2367171T3 (no)
NO (1) NO330073B1 (no)
PL (1) PL1591424T3 (no)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006021922A1 (de) * 2006-05-11 2007-11-15 Jung Pumpen Gmbh Verfahren und Vorrichtung zur Behandlung von Abwasser
DE112006004075A5 (de) * 2006-10-16 2009-08-13 Atb Umwelttechnologien Gmbh Biologische Klärvorrichtung
DE202008003062U1 (de) 2008-03-04 2009-08-06 Atb Umwelttechnologien Gmbh Biologische Klärvorrichtung
DE202012101516U1 (de) * 2012-04-24 2013-07-26 Atb Umwelttechnologien Gmbh Biologische Klärvorrichtung

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002013651A (ja) * 2000-06-28 2002-01-18 Tsutsunaka Sheet Bosui Kk 散気装置用逆流防止弁
EP1388524A1 (de) * 2002-08-06 2004-02-11 RHEBAU Rheinische Beton- und Bauindustrie GmbH & Co. Diskontinuierlich arbeitendes Klärverfahren und Kleinkläranlage oder kleine Kläranlage zur Durchführung des Verfahrens
DE20302765U1 (de) * 2003-02-19 2003-05-15 Wismann Frank Kleinkläranlage

Also Published As

Publication number Publication date
CA2504319A1 (en) 2005-10-29
NO20052030D0 (no) 2005-04-26
ES2367171T3 (es) 2011-10-31
NO20052030L (no) 2005-10-31
PL1591424T3 (pl) 2011-11-30
NO330073B1 (no) 2011-02-14
EP1591424A1 (de) 2005-11-02
ATE513791T1 (de) 2011-07-15
EP1591424B1 (de) 2011-06-22
CA2504319C (en) 2009-09-08

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