AU618248B2

AU618248B2 - Water treatment tank

Info

Publication number: AU618248B2
Application number: AU11924/88A
Authority: AU
Inventors: Lucas Olaf Mueller
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-02-17
Filing date: 1988-02-17
Publication date: 1991-12-19
Anticipated expiration: 2008-02-17
Also published as: AU1192488A

Description

618t 2 s4ReT 14291 FORM 10 COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION

(ORIGINAL)

LODGED AT SUB-OFFICE 1 7FEB 1988 Sydney FOR OFFICE USE: 0040 0 Qa O 0 0 0 0 a O 0Q 0 0 a a O E S00 Class Int. Class Application Number: PI0391 Lodged: 17 February 1987 Accepted: Published: F iority: Related Art: Name and Address of Applicant: Lucas Olaf Mueller 515 Old South Head Rose Bay New South

AUSTRALIA

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Road Wales 2029 0 00 .0 001 00 Actual Inventor: Lucas Olaf Mueller, Spruson Ferguson, Patent Attorneys, Level 33 St Martins Tower, 31 Market Street, Sydney, New South Wales, 2000, Australia Address for Service: Complete Specification for the invention entitled: WATER TREATMENT TANK The following statement is a full description of this best method of performing it known to me/us invention, including the 5815/2 Is The present invention relates to water treatment tanks and more particularly but not exclusively to treat water delivered from a septic tank.

Currently used tanks which treat water from septic tanks, are required to protrude some considerable distance above ground level. This not only detracts from the appearance of the surroundings to the tank, but also generally prevents further use of that area.

It is the object of the present invention to overcome or substantially ameliorate the above disadvantages.

There is disclosed herein a water treatment tank to treat water from a septic tank, said treatment tank being adapted to be received within a holding tank and comprising a base tank having a bottom and side walls arind oo an open top, a filter tank mounted above said base tank and having a bottom o° I wall and side wall defining a space to receive a filter medium, a plurality 'I5 of passages formed in the filter tank buttom wall to allow water to be ducted from the filter tank space into said base tank, a distribution means mounted above said filter tank and adapted to aid in the distribution of o o water across said filter tank, a first baffle located in said base tank and having a side wall encompassing a space into which water from the septic 0 tank is delivered and an open top and bottom, with the open top of said first baffle being located above a desired water level to be maintained in the base tank, a second baffle at least partly located within the space S defined by said first baffle, said second baffle having a side wall encompassing a further space, and having an open top and bottom with the open top thereof being located above the open top of said first baffle, and S the open bottom of said second baffle being located above the open bottom of said first baffle, a pipe extending from within the space defined by said second baffle, and extending upwardly through said filter tank, pump means connected to said pipe and adapted to deliver water to said distribution means via said pipe, said pipe or pump means having ventury means to draw in air to be mixed with the water flowing through said pipe or pump means to aid in aeration of the water, and drain means extending from said base tank, to deliver treated water to said holding tank.

A preferred form of the present invention will now be described by way of example with reference to the accompanying drawings, wherein: Figure 1 is a schematic sectioned side elevation of a water treatment tank assembly located within a holding tank; Figure 2 is a schematic top plan view of the tank assembly of Figure 1; DG:0731t 2 Figure 3 is a schematic top plan view of the tank assembly and holding tank of Figure 1 with the lid removed from the holding tank; Figure 4 is a schematic top plan view of the tank assembly and holding tank, as seen in Figure 3, with a lid member removed from the tank assembly; and Figure 5 is a schematic part sectioned side elevation of a chlorinator employed in the tank assembly and holding tank of Figure 1; Figure 6 is a schematic ,ectioned side elevation of a further water treatment tank assembly located in a holding tank and connected to a settlement tank; and Figure 7 is a schematica sectioned side elevation of a still further water treatment tank assembly located within a holding tank, and connected to a settlement tank.

In Figures 1 to 5 of the accompanying drawings there is schematically depicted a holding tank 10 which receives a water treatment tank assembly 11. The holding tank 10 is of a circular construction and is located predominantly below ground level 12. The holding tank 10 has a bottom wall 13, a side wall 14 and a lid 15. The lid 15 is provided with a manhole 16 and a pump access opening 17. A further opening 18 is provided to aid in 20 servicing the chlorinator of Figure 5. Mounted on the lid 15 is pump enclosure 19 within which is located an electric pump.

sd The water treatment tank assembly 11 includes a base tank 20 having a side wall 21 which is of a "frusto conical" configuration. The tank 20 has S a bottom wall 22 and an open top, surrounded by an annular lip 23. The open top of the base tank 20 is closed by a filter tank 24. The filter S tank 24 has a side wall 25 which is of "frusto concial" configuration. The S filter tank 24 is also provided with a bottom wall 26 and an annular lip 27 encompassing the open top of the filter tank 24. The filter tank 24 is adapted to receive a filter medium, such as short tubular sections.

The open top of the filter tank 24 is closed by a lid means 28 having a bottom wall 29 and a side wall 30. The side wall 30 and bottom wall 29 encompass a space which receives water. The bottom wall 29 is provided with a plurality of holes 31.

Mounted on the lid means 28 is a distribution member 32 which aids in evenly distributing water across the bottom wall 29 of the lid means 28.

The distribution member 32 has a serrated upper edge 33 to aid in the even distribution of watir.

Located within the base tank 20 is a first baffle 34 which is of cylindrical configuration and has an open top and bottom. Located within DG:0731t 3the first baffle 34 is a second baffle 35, also of a cylindrical configuration, with an open top and bottom. The base tank 20 desirably has a water level 36, with the top of the first baffle being located above the water level 36 and the top of the second baffle 35 being located above the open top of the first baffle 34. The bottom of the second baffle 35 is located above the bottom of the first baffle 34.

The holding tank 10 preferably has a water level 37 lower than the water level 36.

Extending from within the second baffle 35 is a pipe 38 which extends upwardly through the filter tank 24 and distribution member 32, to a pump located within the pump closure 19. The water is then returned from the pump via a further pipe 39 wherefrom it is sprayed into the distribution member 32. Either the pipe 38 or 39, or the pump itself, is provided with a ventury which sucks in air and mixes the air with the circulating water to aid in aeration of the water.

Once the aerated water is delivered to the distribution member 32, it rorooo flows therefrom over the bottom wall 29, so as to be delivered to the filter medium located within the filter tank 24. The bottom wall 26 of the filter tank 24 is provided with two apertures 40 which deliver the filtered water into the first baffle 34.

4Extending through the side wall 14 of the holding tank 10, and the side wall 21 of the base tank 20 is a pipe 41, extending from a septic tank S and delivering water from the septic tank, to the interior of the first baffle 34.

Extending through the side wall 21 of the base tank 20 is a chlorinator assembly 42, best seen in Figure 5. The chlorinator assembly includes a vertical conduit 43 which receives a generally tubular chlorine receptacle 44. The receptacle 44 is located within the conduit 43 so that water passing through the conduit 43 is chlorinated. Extending horizontally from the conduit 43 is a short pipe 45 which extends through the wall 21. The pipe 45 ends with a T portion to allow water to pass from within the base tank 20 to the holding tank 10. The water is delivered to the interior of the holding tank 10 via the lower end 46 of the conduit 43.

Located within the holding tank 10 is a further pump 47, with a float control, which delivers the chlorinator treated water from within the holding tank Preferably the holding tank 10 would be of a precast concrete construction, while the tanks 20 and 24 could be formed of fibreglass or plastics material.

DG:0731t In Figure 6 there is schematically depicted a holding tank 50 which receives a water treatment assembly 51. The holding tank 50 is of a circular construction and is located predominantly below ground level 52. The holding tank 50 has a bottom wall 53, a side wall 54 and a lid 55. The lid 55 is provided with a peripheral flange 56 which rests on the wall 54, and a recess portion 57 providing a cavity to receive a filter medium 58. The recess portion 57 has a side wall 59 and a bottom wall 60. Located above the recess portion 57 is a cover 61. The lid is also provided with an aperture through which there projects a chlorinator 62. The water treatment assembly 51 includes a partition 63 which in co-operation with the side wall 54 and bottom wall 53 provide a o: holding chamber 64. The holding chamber 64 has an open top. The bottom wall 60 of the recess portion 57 is located above the chamber 64, while o the bottom wall 60 has passages 65 so the water being treated, after m o m o 0 15 passing through the filter medium 58, is delivered to the chamber 64.

Located within the chamber 64 is a first baffle 66 of circular Sconfiguration having an open top and bottom. Located within the first baffle 66 is a second baffle 67 also of circular configuration, and having an open top and bottom. The open bottom of the baffle 66 is located below the open bottom of the baffle 67. The open top of the Uu baffle 67 is above the open top of the baffle 66. The chamber 64 desirably has a water level 68, with the open top of the first baffle 66 being located above the water level 68.

0:o, The partition 63 also co-operates with the wall 54 to provide a 25 transfer chamber 69-into which the treated water Is delivered via a pipe extending to the chlorinator 62. The water level in the transfer chamber 69 is preferably lower than the water level 68.

Located within the space defined by the baffle 67 is a pump 71 which delivers water under pressure to a pipe 72 connected to a distribution head 73. The distribution head 73 aids in the even distribution of water across the top of the filter medium 58.

Mounted within the chamber 69 is a pump 74 which is preferably provided with a level control 75 to regulate the water level within the chamber 69. Extending from the pump 74 is a pipe 76 via which treated water is delivered from the holding tank -6- The water treatment tank 50 is connected to a settlement tank 77 consisting of a side wall 78 and a bottom wall 79. Extending across the interior of the tank 77 is a partition 80 dividing the tank 77 into a primary settlement chamber 82 and a transfer chamber 81. Water may pass between the chambers 82 and 81 by one or more passages 83.

The tank 77 is connected to a sewerage line 84, while water from the tank 77 is delivered to the chamber 64 by means of a pipe Preferably the pipe 85 delivers water to the space defined by the baffle 66. The top of the side wall 78 is closed by a lid 86.

In Figure 7 there is schematically depicted a holding tank 90 of similar construction to that shown in Figure 1. The holding tank receives a treatment tank assembly 91. The treatment tank assembly 91 iF of similar construction to the treatment tank 11 of Figure 1. Items of the tanks 90 and 91 corresponding to the items 10 and 11 of Figure 1, 15 have been given the same numerals as those allocated to those items in o:,n Figures 1 to 4. In this particular embodiment, a pump 92 is located o within the space defined by the baffle 35. The pump 92 communicates with a pipe 93 which delivers water to a distribution head 94 which aids in the even distribution of water to the filter medium 95. The pump 47 is T: 20 provided with a level control 96, and is connected to a pipe 97 to deliver treated water from the holding tank The holding tank 90 is connected to a settlement tank 98 of similar construction to the settlement tank 76 of Figure 6.

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Claims

3. A, combinationk a holding tank and the water treatment tank of Claim 1, said holding tank including a side wall and bottom wall, and wherein said base tank is provided by a partition within said holding tank and a portion of the side wall of said holding tank.
4. The combination of Claim 3 further including a lid for said holding tank, which lid is provided with a recess portion providing said filter tank. The combination of Claim 4 wherein said pump means is located within the space defined by said second baffle.
6. The combination of Claim 5 wherein said baffle and holding tank LV side wall provide a transfer chamber to receive treated water from the base it 7 tank.
7. A water treatment tank substantially as hereinbefore described with reference to the accompanying drawings. DATED this SEVENTEENTH day of FEBRUARY 1988 LUCAS OLAF MUELLER Patent Attorneys for the Applicant SPRUSON FERGUSON 0000 a Q 0tv 0 00 DG:0731t 33 'C'4 12o 4 04 4 014 000 .000 4,0 0 *9 0 00 0 0 0000 00 00 4,0 0 004,04,0 o 0 0 04,400 0 0 0 00 00 9 00 0 00 0 0 00 04,4,0 0000 0 004,0 00 4 01 *0 A a. *0 0 a a A,%0 o e 'So a 00 0 0 0 4"S V p 0 a 0 o 0 0 a 0 P o 0 i~tV 0 0 0 p 'So 0000 0 0*0 p
9. 0 0 0 00 0000 0 0000 009 0000 %PF1 l 00 0 0 00 00 0 00 0 0 0 0 *0 9 0 'I fAA 000 0 0 009090 00 00 0 O 0 0 0000 0 0 00 0 9 0 0 00 0900 0 0000 0 I ~i1U 5815/2 4z OQ@Q 0500 08 0 6~ 84 0 6 *000 6 o s 00 S 005006 o 6 0*0008 0 0 0 0 6 0 0 0 FIG.- DG: 07 31 t -2- 0 15)4 CCNJ 06,0 0:0aC 4 DG: 0731 t -3- NN 0Q4~Q 0000m 000 7