CA2504319C - Biological wastewater purification device - Google Patents
Biological wastewater purification device Download PDFInfo
- Publication number
- CA2504319C CA2504319C CA 2504319 CA2504319A CA2504319C CA 2504319 C CA2504319 C CA 2504319C CA 2504319 CA2504319 CA 2504319 CA 2504319 A CA2504319 A CA 2504319A CA 2504319 C CA2504319 C CA 2504319C
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- CA
- Canada
- Prior art keywords
- valve
- pump
- line
- ball
- 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.)
- Expired - Fee Related
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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
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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
- 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
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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
- 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
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- 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)
- Sewage (AREA)
- Multiple-Way Valves (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Activated Sludge Processes (AREA)
- Fertilizers (AREA)
Abstract
The invention relates to a biological purification device comprising: 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; at least one pump installation for transporting and treating wastewater, the pump installation being arranged inside the purification chamber; and a distributor for dividing a pump output into at least one main flow and at least one secondary flow, the distributor connected downstream of the at least one pump installation and comprising a main line and a secondary line which proceed from a pump outlet line, the secondary line leading to the at least one pre-treatment chamber and comprising a ball valve arrangement being provided in a rising section of the secondary line and comprising a valve ball which can be moved up and down between two valve seats facing each other at a predetermined distance.
Description
BIOLOGICAL WASTEWATER PURIFICATION DEVICE
Technical Field 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.
~'pescription of the Problem As a general rule, 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.
A large number of pumps not only leads to substantial costs for the pumps themselves, but also to additional expenditure for cabling and controlling the pumps. This makes the systems more expensive, more complicated and more susceptible to wear and tear.
SUMMARY OF THE INVENTION
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.
In order to solve this task, the wastewater purification device according to the invention 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.
This implies the use of a pump capable of performing two functions. One pump and related accessories can be dispensed with. The distributor is preferably configured to permit relatively accurate dosing, especially of the secondary flow. Under these circumstances, 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.
TER MEER STEINMEISTER & PARTNER GbR - 2-Markus Baumann , Case: BAU.P02.03.CA 23.03.2005 1 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.
The dosing of the secondary flow can be achieved in different ways. Valves may be provided, which, for example, let through a certain limited volume of water at the start or end of the pumping operation.
By way of the main task, 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. 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.
Hence 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.
Another embodiment of 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.
Certain exemplary embodiments may comprise a biological purification device comprising: 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; at least one pump installation for transporting and treating wastewater, the pump installation being arranged inside the purification chamber;
and a distributor for dividing a pump output into at least one main flow and at least one secondary flow, the distributor connected downstream of the at least one pump installation and comprising a main line and a secondary line which proceed from a pump outlet line, the secondary line leading to the at least one pre-treattnent chamber and comprising a ball valve arrangement being provided in a rising section of the secondary line and comprising a valve ball which can be moved up and down between two valve seats facing each other at a predetermined distance.
These valve types merely serve as examples of numerous other possibilities.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred examples of embodiments of the invention will be described in more detail below with reference to the enclosed drawings, in which Fig. la and lb show a first embodiment of a valve envisaged for the secondary line in accordance with the invention, in different operating positions;
Fig. 2a to 2c show an equivalent view of a second embodiment of a valve;
-3a-Fig. 3a to 3e show a third embodiment of a valve according to the invention;
Fig. 4a and 4b show a fourth embodiment of a valve.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Fig. la is a diagrammatic representation of a purification chamber 10 containing more or less purified water up to water level 12. Inside purification chamber 10 there is a pump 14 from which proceeds a pump outlet line 16 which immediately branches into a main line 18 and a secondary line 20. In the example shown, the main line feeds into a Venturi aerator 22, and an air line 24 intersects with the narrow portion of said Venturi aerator.
In a rising section of secondary line 20 there are two valve seats 26,28 facing each other at a distance, between which a ball 30 can be moved up and down.
TER MEER STEINMEISTER & PARTNER GbR - 4-Markus Baumann , Case: BAU.P02.03.CA 23.03.2005 l 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. 2a to 2c show another embodiment of the invention. This embodiment is based on the embodiment of Fig. la and lb, 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. 2a to 2c 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.
Downstream of the arrangement comprising valve ball 30 with the two valve seats 26,28 there is a non-return valve 32. In the case illustrated, 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. 2c).
3() The way in which this valve functions will be described below.
Fig. 2a shows the position in which pump 14 is switched off. When pump 14 is switched on (Fig. 2b), valve ball 30 is gradually lifted upwards. As already mentioned, there is only a small gap between valve ball 30 and the walls of the secondary line, so water can rise up past valve ball 30.
TER MEER STEINMEISTER & PARTNER GbR - 5-Markus Baumann, Case: BAU.P02.03.CA 23.03.2005 l. 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. When valve ball 30 comes into contact with the top valve seat 28 (Fig. 2c), 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. 3a to 3e are equivalent to Fig. 2a to 2c, except that in Fig. 3a to 3e, the non-return valve is disposed before or upstream of valve ball 30 with the two valve seats 26,28. As the figures coincide fully in all other respects, the same reference numerals will be used as in Fig 2a to 2c and, to some extent, in Fig. la and lb.
The way in which the embodiment of Fig. 3a to 3e functions will now be described below.
Fig. 3a 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. 3b). 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. 3c), 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. 3d). When the pump is switched off, valve ball 30 also sinks back down onto its bottom valve seat 26 (Fig. 3e).
Fig. 4a and 4b show an arrangement which functions according to a different principle than the embodiments described thus far. In a purification chamber 42 there is a pump 44 from which a pump outlet line 46 proceeds in a vertical direction.
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. 4a. 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.
TER MEER STEINMEISTER & PARTNER GbR - 6-Markus Baumann, Case: BAU.P02.03.CA 23.03.2005 1 There is a 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 Fig. 4a and 4b. Main line 60 has a water reservoir 62 in a rising section adjoining the broadened section 48 of pump outlet line 46.
The way in which the embodiment of Fig. 4a and 4b functions will now be described below.
Fig. 4a shows the position in which pump 44 is switched off. Valve ball 52 rests against its valve seat 50. When pump 44 is switched on, valve ball 52 is lifted upwards from bottom valve seat 50 towards valve seat 58 at the inlet of secondary line 56. This seals off secondary line 56. The water flows through the main line 60. If pump 44 is now switched off, valve ball 52 sinks back down to its bottom valve seat 50. Hence this arrangement operates as a non-2() 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. At this point it should be pointed out that Fig. 4a and 4b 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.
Technical Field 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.
~'pescription of the Problem As a general rule, 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.
A large number of pumps not only leads to substantial costs for the pumps themselves, but also to additional expenditure for cabling and controlling the pumps. This makes the systems more expensive, more complicated and more susceptible to wear and tear.
SUMMARY OF THE INVENTION
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.
In order to solve this task, the wastewater purification device according to the invention 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.
This implies the use of a pump capable of performing two functions. One pump and related accessories can be dispensed with. The distributor is preferably configured to permit relatively accurate dosing, especially of the secondary flow. Under these circumstances, 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.
TER MEER STEINMEISTER & PARTNER GbR - 2-Markus Baumann , Case: BAU.P02.03.CA 23.03.2005 1 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.
The dosing of the secondary flow can be achieved in different ways. Valves may be provided, which, for example, let through a certain limited volume of water at the start or end of the pumping operation.
By way of the main task, 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. 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.
Hence 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.
Another embodiment of 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.
Certain exemplary embodiments may comprise a biological purification device comprising: 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; at least one pump installation for transporting and treating wastewater, the pump installation being arranged inside the purification chamber;
and a distributor for dividing a pump output into at least one main flow and at least one secondary flow, the distributor connected downstream of the at least one pump installation and comprising a main line and a secondary line which proceed from a pump outlet line, the secondary line leading to the at least one pre-treattnent chamber and comprising a ball valve arrangement being provided in a rising section of the secondary line and comprising a valve ball which can be moved up and down between two valve seats facing each other at a predetermined distance.
These valve types merely serve as examples of numerous other possibilities.
BRIEF DESCRIPTION OF THE DRAWINGS
Preferred examples of embodiments of the invention will be described in more detail below with reference to the enclosed drawings, in which Fig. la and lb show a first embodiment of a valve envisaged for the secondary line in accordance with the invention, in different operating positions;
Fig. 2a to 2c show an equivalent view of a second embodiment of a valve;
-3a-Fig. 3a to 3e show a third embodiment of a valve according to the invention;
Fig. 4a and 4b show a fourth embodiment of a valve.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Fig. la is a diagrammatic representation of a purification chamber 10 containing more or less purified water up to water level 12. Inside purification chamber 10 there is a pump 14 from which proceeds a pump outlet line 16 which immediately branches into a main line 18 and a secondary line 20. In the example shown, the main line feeds into a Venturi aerator 22, and an air line 24 intersects with the narrow portion of said Venturi aerator.
In a rising section of secondary line 20 there are two valve seats 26,28 facing each other at a distance, between which a ball 30 can be moved up and down.
TER MEER STEINMEISTER & PARTNER GbR - 4-Markus Baumann , Case: BAU.P02.03.CA 23.03.2005 l 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. 2a to 2c show another embodiment of the invention. This embodiment is based on the embodiment of Fig. la and lb, 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. 2a to 2c 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.
Downstream of the arrangement comprising valve ball 30 with the two valve seats 26,28 there is a non-return valve 32. In the case illustrated, 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. 2c).
3() The way in which this valve functions will be described below.
Fig. 2a shows the position in which pump 14 is switched off. When pump 14 is switched on (Fig. 2b), valve ball 30 is gradually lifted upwards. As already mentioned, there is only a small gap between valve ball 30 and the walls of the secondary line, so water can rise up past valve ball 30.
TER MEER STEINMEISTER & PARTNER GbR - 5-Markus Baumann, Case: BAU.P02.03.CA 23.03.2005 l. 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. When valve ball 30 comes into contact with the top valve seat 28 (Fig. 2c), 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. 3a to 3e are equivalent to Fig. 2a to 2c, except that in Fig. 3a to 3e, the non-return valve is disposed before or upstream of valve ball 30 with the two valve seats 26,28. As the figures coincide fully in all other respects, the same reference numerals will be used as in Fig 2a to 2c and, to some extent, in Fig. la and lb.
The way in which the embodiment of Fig. 3a to 3e functions will now be described below.
Fig. 3a 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. 3b). 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. 3c), 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. 3d). When the pump is switched off, valve ball 30 also sinks back down onto its bottom valve seat 26 (Fig. 3e).
Fig. 4a and 4b show an arrangement which functions according to a different principle than the embodiments described thus far. In a purification chamber 42 there is a pump 44 from which a pump outlet line 46 proceeds in a vertical direction.
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. 4a. 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.
TER MEER STEINMEISTER & PARTNER GbR - 6-Markus Baumann, Case: BAU.P02.03.CA 23.03.2005 1 There is a 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 Fig. 4a and 4b. Main line 60 has a water reservoir 62 in a rising section adjoining the broadened section 48 of pump outlet line 46.
The way in which the embodiment of Fig. 4a and 4b functions will now be described below.
Fig. 4a shows the position in which pump 44 is switched off. Valve ball 52 rests against its valve seat 50. When pump 44 is switched on, valve ball 52 is lifted upwards from bottom valve seat 50 towards valve seat 58 at the inlet of secondary line 56. This seals off secondary line 56. The water flows through the main line 60. If pump 44 is now switched off, valve ball 52 sinks back down to its bottom valve seat 50. Hence this arrangement operates as a non-2() 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. At this point it should be pointed out that Fig. 4a and 4b 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.
3()
Claims (6)
1. A biological purification device comprising:
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;
at least one pump installation for transporting and treating wastewater, said pump installation being arranged inside the purification chamber; and a distributor for dividing a pump output into at least one main flow and at least one secondary flow, the distributor connected downstream of the at least one pump installation and comprising a main line and a secondary line which proceed from a pump outlet line, the secondary line leading to the at least one pre-treatment chamber and comprising a ball valve arrangement being provided in a rising section of the secondary line and comprising a valve ball which can be moved up and down between two valve seats facing each other at a predetermined distance.
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;
at least one pump installation for transporting and treating wastewater, said pump installation being arranged inside the purification chamber; and a distributor for dividing a pump output into at least one main flow and at least one secondary flow, the distributor connected downstream of the at least one pump installation and comprising a main line and a secondary line which proceed from a pump outlet line, the secondary line leading to the at least one pre-treatment chamber and comprising a ball valve arrangement being provided in a rising section of the secondary line and comprising a valve ball which can be moved up and down between two valve seats facing each other at a predetermined distance.
2. The purification device of claim 1, wherein a non-return valve is disposed upstream of the ball valve arrangement comprising the valve seats and the valve ball in the secondary line.
3. The purification device of claim 1, wherein a non-return valve is disposed upstream of the ball valve arrangement comprising the valve seats and the valve ball in the secondary line.
4. The purification device of claim 1, further comprising a water reservoir in the main line in a raised position, wherein water contained in the water reservoir flows back and into the secondary line when the pump is switched off.
5. The purification device of claim 1, wherein the two valve seats are positioned at the pump outlet line and an inlet area of the secondary line respectively, and wherein, when the pump is switched on, the ball valve lifts up from the valve seat at the end of the pump outlet line and presses, by the flow of water against the valve seat at the inlet of the secondary line, and wherein when the pump is switched off, the ball valve sinks back onto valve seat at the end of the pump outlet line, thereby opening the inlet to the secondary line.
6. The purification device of claim 5, wherein the inlet area of the secondary line lies concentrically inside a broadened section of the pump outlet line.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP20040010152 EP1591424B1 (en) | 2004-04-29 | 2004-04-29 | Biological waste water treatment plant |
| DEEP04010152.9 | 2004-04-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2504319A1 CA2504319A1 (en) | 2005-10-29 |
| CA2504319C true CA2504319C (en) | 2009-09-08 |
Family
ID=34924777
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2504319 Expired - Fee Related CA2504319C (en) | 2004-04-29 | 2005-04-12 | Biological wastewater purification device |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20050244282A1 (en) |
| EP (1) | EP1591424B1 (en) |
| AT (1) | ATE513791T1 (en) |
| CA (1) | CA2504319C (en) |
| ES (1) | ES2367171T3 (en) |
| NO (1) | NO330073B1 (en) |
| PL (1) | PL1591424T3 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006021922A1 (en) * | 2006-05-11 | 2007-11-15 | Jung Pumpen Gmbh | Method and device for treating wastewater |
| DE112006004075A5 (en) * | 2006-10-16 | 2009-08-13 | Atb Umwelttechnologien Gmbh | Biological clarifier |
| DE202008003062U1 (en) | 2008-03-04 | 2009-08-06 | Atb Umwelttechnologien Gmbh | Biological clarifier |
| DE202012101516U1 (en) * | 2012-04-24 | 2013-07-26 | Atb Umwelttechnologien Gmbh | Biological clarifier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002013651A (en) * | 2000-06-28 | 2002-01-18 | Tsutsunaka Sheet Bosui Kk | Check valve for diffuser |
| EP1388524A1 (en) * | 2002-08-06 | 2004-02-11 | RHEBAU Rheinische Beton- und Bauindustrie GmbH & Co. | Discontinuous sewage treatment process and small installation for carrying out this process |
| DE20302765U1 (en) * | 2003-02-19 | 2003-05-15 | Wißmann, Frank, 32457 Porta Westfalica | Small-scale sequencing batch reactor for waste water treatment is delivered as assembled unit with single air line from external compressor |
-
2004
- 2004-04-29 EP EP20040010152 patent/EP1591424B1/en not_active Expired - Lifetime
- 2004-04-29 AT AT04010152T patent/ATE513791T1/en active
- 2004-04-29 ES ES04010152T patent/ES2367171T3/en not_active Expired - Lifetime
- 2004-04-29 PL PL04010152T patent/PL1591424T3/en unknown
-
2005
- 2005-04-12 US US11/104,368 patent/US20050244282A1/en not_active Abandoned
- 2005-04-12 CA CA 2504319 patent/CA2504319C/en not_active Expired - Fee Related
- 2005-04-26 NO NO20052030A patent/NO330073B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE513791T1 (en) | 2011-07-15 |
| NO20052030D0 (en) | 2005-04-26 |
| PL1591424T3 (en) | 2011-11-30 |
| NO20052030L (en) | 2005-10-31 |
| NO330073B1 (en) | 2011-02-14 |
| CA2504319A1 (en) | 2005-10-29 |
| EP1591424B1 (en) | 2011-06-22 |
| US20050244282A1 (en) | 2005-11-03 |
| ES2367171T3 (en) | 2011-10-31 |
| EP1591424A1 (en) | 2005-11-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130412 |