AU2006202880A1 - Recovery of magnetic resin - Google Patents
Recovery of magnetic resin Download PDFInfo
- Publication number
- AU2006202880A1 AU2006202880A1 AU2006202880A AU2006202880A AU2006202880A1 AU 2006202880 A1 AU2006202880 A1 AU 2006202880A1 AU 2006202880 A AU2006202880 A AU 2006202880A AU 2006202880 A AU2006202880 A AU 2006202880A AU 2006202880 A1 AU2006202880 A1 AU 2006202880A1
- Authority
- AU
- Australia
- Prior art keywords
- magnetic
- recovery
- treated water
- resin
- magnetic resin
- 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
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
AUSTRALIA
PATENTS ACT 1990 COMPLETE SPECIFICATION FOR A STANDARD PATENT (Original) APPLICATION NO:
LODGED:
COMPLETE SPECIFICATION LODGED:
ACCEPTED:
PUBLISHED:
RELATED ART: NAME OF APPLICANT: ACTUAL INVENTOR(S): ADDRESS FOR SERVICE: INVENTION TITLE: Water Corporation Paul Nolan LORD AND COMPANY, Patent and Trade Mark Attorneys, of 4 Douro Place, West Perth, Western Australia, 6005, AUSTRALIA.
RECOVERY OF MAGNETIC RESIN DETAILS OF ASSOCIATED PROVISIONAL APPLICATION NO'S: Australian Provisional Patent Application Number 2005903799 filed on 19 July 2005 The following Statement is a full description of this invention including the best method of performing it known to me/us:
STITLE
SRECOVERY OF MAGNETIC RESIN FIELD OF THE INVENTION The present invention relates to the recovery of magnetic resin, such as that used in a 00 00 Magnetic Ion Exchange water treatment process.
BACKGROUND TO THE INVENTION It is known to treat water using a magnetic ion exchange process in order to remove natural organic matter from the water. This process involves introducing small beads of ion-exchange resin incorporated with magnetic material into the water.
Once natural organic matter is removed, the treated water, together with the magnetic resin, is typically passed through a settler. In the settler most of the magnetic resin agglomerates at the bottom, and can be readily removed for recycling through the water treatment process.
A small proportion of magnetic resin is not captured during the settling process, and discharges from settler within the treated water. Typically the amount of resin lost through such discharge is about 1x104%. Over time the cost of replacing the lost resin is significant.
Various attempts have been made to improve the efficiency of the settling process, however to date higher recovery rates have not been achieved.
The present invention attempts to provide a further method of recovery of magnetic resin.
SSUMMARY OF THE INVENTION SIn accordance with one aspect of the present invention there is provided a method of recovery of magnetic resin from treated water, the method including the steps of (Ni introducing a flocculant into the treated water; permitting suspended or colloidal particles to agglomerate; transferring the agglomerated particles into a magnetic separator, and 00 00 C separating particles of magnetic resin from other particles within the magnetic separator.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a schematic representation of a water treatment process including the method of magnetic resin recovery of the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS Referring to the Figures, there is shown schematically a water treatment process including a Magnetic Ion Exchange water treatment contactor 10, an associated settler 12 and a water clarifier 14.
Small beads of ion-exchange resin incorporated with magnetic material (magnetic resin) are introduced into water being treated in the treatment contactor 10. The water containing the resin is then allowed to settle in the settler 12. During settling most of the magnetic resin in the water settles to the bottom, and can be recycled. The contactor and settler 12 together comprise part of a Magnetic Ion Exchange plant Water leaving the settler 12 typically contains fine, suspended or colloidal particles including a small amount of magnetic resin. The concentration of magnetic resin in the water is typically in the order of 1 x 10-4%. To date, no efficient means of recovering such Sa small concentration of magnetic resin have been determined.
According to the method of the present invention at least one flocculant such as aluminium sulfate and/or polymer flocculant is added to the water, which is then introduced into the clarifier 14. The flocculants enable the suspended or colloidal 00 00 C¢1 particles together with the magnetic resin to agglomerate together and settle at the IND bottom of the clarifier. Typically the agglomerated particles settle as a thick sludge N, containing approximately 2% solids.
Substantially clear potable water 18 is then drawn from the top of the clarifier 14.
The present invention relies on the realisation that the clarifier 14, whilst purifying the water, also provides a sludge containing a relatively concentrated form of magnetic resin (typically in the order of According to the present invention the sludge 20, containing the agglomerated particles, is then transferred into a magnetic separator 16. In a preferred embodiment of the invention, the magnetic separator 16 is a magnetic drum separator.
Magnetic resin contained within the sludge 20 is separated from other particles in the sludge within the magnetic separator 16. The resin 22 can thus be collected and regenerated, for instance as part of a salt regeneration process within the magnetic ion exchange plant 15. Following regeneration, the resin can be recycled into the contactor In an efficacious trial, the sludge containing the agglomerated particles was entered into a magnetic drum separator run using counter-current rotation.
It will be appreciated that it may be possible to achieve a successful result using a drum running using concurrent rotation, and/or using any suitable sources of magnetic flux Ssuch as electro-magnets or rare earth magnets.
SIn a preferred embodiment of the invention, the drum is rotated at a speed of about 12rpm, with a sludge thinned to a consistency of less than
(N,
Further, in order to prevent collection of concentrating resin onto the rotating drum, a 0 5 preferred embodiment of the invention includes a resilient scraping arm located on the 00
C
I horizontal, adjacent to the drum.
IN
CI Modifications and variations as would be apparent to a skilled addressee are deemed to be within the scope of the present invention.
Claims (9)
1. A method of recovery of magnetic resin from treated water, the method including h the steps of introducing a flocculant into the treated water; permitting suspended or ¢€3 colloidal particles to agglomerate; transferring the agglomerated particles into a magnetic 0 separator, and separating particles of magnetic resin from other particles within the 00 00 magnetic separator.
I2. A method of recovery of magnetic resin from treated water as claimed in claim 1, wherein the magnetic separator is a magnetic drum separator.
3. A method of recovery of magnetic resin from treated water as claimed in claim 2, wherein the magnetic drum separator includes an adjacent horizontal resilient scraping arm.
4. A method of recovery of magnetic resin from treated water as claimed in claim 2 or claim 3, wherein the agglomerated particles are entered into the magnetic drum separator using counter-current rotation.
A method of recovery of magnetic resin from treated water as claimed in claim 4, wherein the magnetic drum separator rotates at about 12rpm.
6. A method of recovery of magnetic resin from treated water as claimed in claim 2 or 3, wherein agglomerated particles are entered into the magnetic drum separator using concurrent rotation.
7. A method of recovery of magnetic resin from treated water as claimed in any preceding claim, wherein the magnetic separator uses electromagnets as a source of magnetic flux.
8. A method of recovery of magnetic resin from treated water as claimed in any one of claims 1 to 6, wherein the magnetic separator uses rare earth magnets as a source of O magnetic flux.
9. A method of recovery of magnetic resin from treated water as claimed in any preceding claim, wherein the flocculant includes aluminium sulphate. A method of recovery of magnetic resin from treated water as claimed in any preceding claim, wherein the flocculant includes polymer flocculant. 00 00 C 11. A method of recovery of magnetic resin from treated water as hereinabove NO described with reference to, and as shown in, the accompanying drawings. DATED THIS 22ND DAY OF JUNE 2006. Water Corporation By its Patent Attorneys LORD AND COMPANY PERTH, WESTERN AUSTRALIA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2006202880A AU2006202880A1 (en) | 2005-07-19 | 2006-06-23 | Recovery of magnetic resin |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2005903799A AU2005903799A0 (en) | 2005-07-19 | Recovery of magnetic resin | |
| AU2005903799 | 2005-07-19 | ||
| AU2006202880A AU2006202880A1 (en) | 2005-07-19 | 2006-06-23 | Recovery of magnetic resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2006202880A1 true AU2006202880A1 (en) | 2007-02-08 |
Family
ID=37764049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2006202880A Abandoned AU2006202880A1 (en) | 2005-07-19 | 2006-06-23 | Recovery of magnetic resin |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU2006202880A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702887A (en) * | 2019-10-22 | 2020-01-17 | 中国水务投资有限公司 | Magnetic resin loss rate measuring device and measuring method |
| CN117125865A (en) * | 2023-10-26 | 2023-11-28 | 山东晟博环境科技有限公司 | High-organic matter park comprehensive wastewater treatment device and method |
-
2006
- 2006-06-23 AU AU2006202880A patent/AU2006202880A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702887A (en) * | 2019-10-22 | 2020-01-17 | 中国水务投资有限公司 | Magnetic resin loss rate measuring device and measuring method |
| CN117125865A (en) * | 2023-10-26 | 2023-11-28 | 山东晟博环境科技有限公司 | High-organic matter park comprehensive wastewater treatment device and method |
| CN117125865B (en) * | 2023-10-26 | 2024-06-11 | 山东晟博环境科技有限公司 | High-organic matter park comprehensive wastewater treatment device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK1 | Application lapsed section 142(2)(a) - no request for examination in relevant period |