AU2023239625A1 - Chemical dispensing system - Google Patents
Chemical dispensing system Download PDFInfo
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- AU2023239625A1 AU2023239625A1 AU2023239625A AU2023239625A AU2023239625A1 AU 2023239625 A1 AU2023239625 A1 AU 2023239625A1 AU 2023239625 A AU2023239625 A AU 2023239625A AU 2023239625 A AU2023239625 A AU 2023239625A AU 2023239625 A1 AU2023239625 A1 AU 2023239625A1
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- Australia
- Prior art keywords
- dispensing system
- chemical dispensing
- portable chemical
- chlorine
- portable
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- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
A portable chemical dispensing system is provided including: an inlet, for receiving a liquid to
be treated; a controller, configured to control a dosing of a chemical in the liquid; and an outlet,
for providing the dosed liquid. The controller is housed in an electronics portion of an enclosure
of the portable chemical dispensing, which is separate to a dosing portion of the enclosure.
1
160a 160b
105 140 115 130
145
135b -2
120
125 5
110
Figure 1
IUU %
2/3
160b 160a 215
-= 160
10021
205. 205
____-205.
10 220 Figure 2
100 ,7 -ioo
435
2 10
205 130%
445 _ _ _ _ _ _ _ _
220 Figure 3 Figure 5
3/3
100 15/0015
100 4 10
1415
100
430
115 150
40 00'
Description
160a 160b 105 140 115 130
145
135b -2 120
125 5 110
Figure 1
% 2/3 160b 160a 215
-= 160
10021
205. 205
____-205.
10 220 Figure 2 100 7 ,-ioo
435
2 10 205 130%
445 _ _ _ _ _ _ _ _
220 Figure 3 Figure 5
3/3
15/0015 100
100 4 10
1415
100
430
115 150
40 00'
[0001] This application is a divisional of Australian Patent Application No. 2016277578, the disclosure of which is incorporated by reference herein in its entirety and for all purposes.
[0002] The present invention relates to dispensing of chemicals. In particular, although not exclusively, the present invention relates to chlorine dosing systems for dosing potable water in a reservoir.
[0003] Water reservoirs often incorporate chlorine dosing systems, to prevent the growth of bacteria and microbes in the water. These systems are complex, and are generally custom built to suit the particular reservoir.
[0004] When maintenance is required, or a breakdown of the system occurs, a temporary system is generally set up to avoid interruption in the dosing of chlorine to the water. A problem, however, with such temporary systems is that they are time consuming and costly to set
up.
[0005] A further problem with temporary systems is that dosing is generally not consistent or accurate, which can cause substandard treatment of water. In particular, many such temporary systems are unable to maintain target chlorine levels due to temperature changes and even corrosion of electrical components from chlorine gas.
[0006] Similar problems exist in smaller chlorine dosing systems, where the trade-off between cost (or complexity) and accuracy often results in inconsistent dosing of chlorine. Furthermore, similar problems exist in relation to the dosing of other chemicals.
[0007] As such, there is clearly a need for improved chemical dispensing systems.
[0008] It will be clearly understood that, if a prior art publication is referred to herein, this reference does not constitute an admission that the publication forms part of the common general knowledge in the art in Australia or in any other country.
[0009] The present invention is directed to chemical dispensing systems, which may at least partially overcome at least one of the abovementioned disadvantages or provide the consumer with a useful or commercial choice.
[0010] With the foregoing in view, the present invention in one form, resides broadly in a portable chemical dispensing system including: an inlet, for receiving a liquid to be treated; a controller, configured to control a dosing of a chemical in the liquid; and an outlet, for providing the dosed liquid; wherein the controller is housed in an electronics portion of an enclosure of the portable chemical dispensing, which is separate to a dosing portion of the enclosure.
[0011] Advantageously, the chemical dispensing system is portable, which enables it to be moved onto site in an assembled form, which reduces installation time and thus an associated cost. Furthermore, by separating the electronics portion of the housing from the dosing portion, contamination of electronics (e.g. the controller) by chemicals is reduced or avoided.
[0012] Preferably, the enclosure is skid mounted, which enables it that can be easily transported to any site. The enclosure may be supported by a galvanised plinth.
[0013] Preferably, the enclosure is formed primarily of sheet aluminium. The sheet aluminium may be about 3mm thick, and may be powder coated. The enclosure may include separate doors to provide access to the dosing portion and the electronics portion respectively. Access to the doors may be provided by lockable handles.
[0014] Preferably, the chemical comprises chlorine. The chlorine may be provided as liquid chlorine. Alternatively, the chlorine may be provided as powdered, granulated, or briquette based chlorine. Suitably, the chlorine may be provided as calcium hypochlorite briquettes.
[0015] The inlet and outlet may be coupled to a potable water reservoir. Suitably, the dosing of chlorine is to provide safe drinking water.
[0016] Preferably, the portable chemical dispensing system includes a plurality of sensors between the inlet and the outlet, to measure a chlorination of the water. Suitably, the controller is configured to dose chlorine at least in part according to the measured chlorination.
[0017] Preferably, the controller is coupled to a solenoid valve, to provide controlled chlorination of the water.
[0018] Preferably, a flow of water between the inlet and the outlet is split into two paths, namely a first path containing the sensors, and a second path which does not contain the sensors. A pressure regulator and check valve may restrict flow of water into the first path.
[0019] The controller may be coupled to a data interface, to enable remote control and monitoring of the portable chemical dispensing system. The data interface may comprise a wireless communications interface, coupled to the Internet.
[0020] The portable chemical dispensing system may further include a shower, coupled to the inlet, for enabling an operator to shower in case of emergency.
[0021] Any of the features described herein can be combined in any combination with any one or more of the other features described herein within the scope of the invention.
[0022] The reference to any prior art in this specification is not, and should not be taken as an acknowledgement or any form of suggestion that the prior art forms part of the common general knowledge.
[0023] Various embodiments of the invention will be described with reference to the following drawings, in which:
[0024] Figure 1 illustrates a schematic of a portable chemical dispensing system according to an embodiment of the present invention;
[0025] Figure 2 illustrates a front view of the portable chemical dispensing system of Figure 1, according to an embodiment of the present invention;
[0026] Figure 3 illustrates a side view of the portable chemical dispensing system of Figure 1;
[0027] Figure 4 illustrates a front view of the portable chemical dispensing system of Figure 1, with the front doors removed, illustrating a dosing portion;
[0028] Figure 5 illustrates a side view of the portable chemical dispensing system of Figure 1 with the side doors removed, illustrating an electronics portion; and
-r
[0029] Figure 6 illustrates a top view of the portable chemical dispensing system of Figure 1 with the roof removed, illustrating both the dosing portion and the electronics portion.
[0030] Preferred features, embodiments and variations of the invention may be discerned from the following Detailed Description which provides sufficient information for those skilled in the art to perform the invention. The Detailed Description is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way.
[0031] Figure 1 illustrates a schematic of a portable chemical dispensing system 100 according to an embodiment of the present invention. The portable chemical dispensing system 100 provides consistent and accurate dosing of chlorine to a reservoir to provide safe drinking water. As described in further detail below, the portable chemical dispensing system 100 is plug-and-play, which allows the portable chemical dispensing system 100 to be quickly used short term dosing (e.g. when an ordinary system is in maintenance). However, the portable chemical dispensing system 100 may be used for long term dosing on any suitable reservoir.
[0032] The portable chemical dispensing system 100 includes an inlet 105, for receiving water from a reservoir to be treated, and an outlet 110, for returning chlorinated water to the reservoir. A plurality of sensors 115 are provided between the inlet 105 and the outlet 110, to measure a chlorination of the water, to enable accurate dosing to be performed.
[0033] The sensors 115 comprise probes which are provided in pipework between the inlet 105 and the outlet 110. In addition to measuring a level of chlorination in the water, the sensors 115 may include temperature sensors, flow sensors and the like, to provide more accurate sensing, or to be able to sense other data.
[0034] An example of suitable sensors is provided in the DEPOLOX 5 measurement Module by Evoqua Water Technologies LLC.
[0035] A solenoid valve 120, coupled to a chemical supply 125, is provided after the sensors 115, to enable controlled chlorination of the water. In particular, a controller 130, which is coupled to the sensors 115 and the solenoid 120, regulates the solenoid 120 based upon a level of chlorination in the water, to chlorinate the water accordingly.
[0036] The controller 130 may comprise a supervisory control and data acquisition (SCADA) controller.
[0037] The portable chemical dispensing system 100 may include a mechanical mixing device, after the solenoid valve 120, to improve chemical contact time, and to improve mixing of the chlorine to the water.
[0038] The chemical supply 125 may supply liquid chlorine, or be used to with powdered, granulated, or briquette based chlorine, as described in further detail below.
[0039] A flow of water between the inlet 105 and the outlet 110 is split into two paths, a first path 135a containing the sensors 115, and a second path 135b which does not contain the sensors 115. A pressure regulator 140 and check valve 145 restricts flow into the first path 135a-a, and ensures the pressure at the sensors 115 does not exceed a threshold set by the pressure regulator.
[0040] The check valve 145 also prevents chlorinated water from travelling backwards into the sensors 115 and influencing data of the sensors. This is particularly the case when the pressure of the second path 135b is higher than that of the first path 135a. In the present system 100, the pressure regulator 140 may be set to provide a pressure in the first path 135a of about 1 bar, whereas the second path has a pressure of the input 105, which is typically at least several bar.
[0041] The portable chemical dispensing system 100 further includes a shower 150, coupled to the inlet 105, for enabling an operator to shower in case of emergency. This is particularly advantageous when chemicals are handled by operators, as it enables the operator to shower on site in case of an emergency.
[0042] Finally, the portable chemical dispensing system 100 includes a data interface 155, to enable remote control and monitoring of the portable chemical dispensing system 100. In particular, the data interface 155 may comprise a wireless communications interface, coupled to the Internet, which enables users to remotely monitor and control the dosing of chlorine.
[0043] As described in further detail below, the portable chemical dispensing system 100 is provided in the form of an enclosure 160, which includes a dosing portion 160a, and an electronics portion 160b. The data interface 155 and the controller 130 are located in an electronics portion 160b, which is separated from the dosing portion 160a. This separating ensures that conditions for electronics can be maintained, and that chlorine gas will not damage the electronics in the electronics portion.
[0044] The enclosure 160 is skid mounted, which enables it that can be easily transported to any site, at which the inlet 105 and outlet 110 may be connected to allow for a quick site installation. As such, dosing of chlorine may be commenced almost immediately, which is particularly useful in the case of unexpected outages. Furthermore, as illustrated below, the enclosure 160 is compact, and thus required minimal footprint on site.
[0045] The portable chemical dispensing system 100 further includes pipework, valves, pressure sensors, flowmeters, pumps, regulators, drains, and tanks, which are not illustrated, to enable the portable chemical dispensing system 100 to function and to provide additional features, such as pressure protection. As an illustrative example, a pressure relief valve and a pressure loading valves are provided to protect the system from over pressure and to ensure accurate dosing.
[0046] Furthermore, the controller 130 may also monitor data dosing, water circulation, pump status, sample water tank levels, as well as external equipment such as reservoir mixers. In some embodiments, additional equipment can be installed such as pressure transmitters or other client specified equipment to suit client sites.
[0047] Figure 2 illustrates a front view of the portable chemical dispensing system 100, according to an embodiment of the present invention. Figure 3 illustrates a side view of the portable chemical dispensing system 100.
[0048] The enclosure 160 is constructed of 3mm powder coated aluminium, and includes doors 205 to provide access to the dosing portion 160a and the electronics portion 160b respectively. Access is provided by lockable handles 210, which prevent unauthorised access to the enclosure.
[0049] The electronics portion 160b is located on a left side of the enclosure 160, and access is provided by a side door 205, as best illustrated in Figure 3. Access to the dosing portion 160a, which fills a remainder of the enclosure, is provided by front doors.
[0050] The enclosure 160 includes a roof 215, which extends outwardly over the doors, to provide shelter. In particular, the roof 215 extends outwardly from a left side of the enclosure 160, as best illustrated in Figure 2, and outwardly over a front side of the enclosure 160 as best illustrated in Figure 3.
[0051] The enclosure 160 is mounted on a galvanised plinth 220, which extends around a base of the enclosure 160. The plinth 220 can be used to secure the enclosure to a concrete slab, or the like, and provides structural support to the enclosure when stored and transported.
[0052] Figure 4 illustrates a front view of the portable chemical dispensing system 100 with the front doors removed, illustrating the dosing portion 160a. Figure 5 illustrates a side view of the portable chemical dispensing system 100 with the side doors removed, illustrating the electronics portion 160b. Figure 6 illustrates a top view of the portable chemical dispensing system 100 with the roof removed, illustrating both the dosing portion 160a and the electronics portion 160b.
[0053] As will be readily appreciated by the skilled addressee, certain pipework and components have been omitted from the drawings for the sake of clarity.
[0054] As best illustrated in Figure 4, the chemical supply 125 is provided in the form of a chemical tank, having a capacity of about 200L. The chemical tank 125 is provided in a bund 405, which has a capacity of about 300L, which is configured to capture chemicals from the chemical tank in case of a failure of the chemical tank 125. First and second chemical dosing pumps 415 are provided in association with the chemical tank 125, which feed into the solenoid valve 120.
[0055] A radar sensor 410, which is coupled to the controller 130, is provided in association with the chemical tank 125. The radar sensor 410 provides level data to the controller 130, which may issue alerts if a level of the chemical tanks 125 is low, or if a malfunction (e.g. a discrepancy between expected and actual chemical level) is detected.
[0056] The portable chemical dispensing system 100 further includes a sample water tank 420, which receives the water from the sensors. A float switch in the sample water tank 420 triggers a sample water return pump 425 when the tank is full, causing the water to be pumped through the check valve 145 and to the outlet 110.
[0057] Finally, the portable chemical dispensing system 100 includes circulation pump 430, for circulating liquid in the system 100, switches 435 for switching on and off aspects of the system 100, power points 440 for powering removable aspects of the system 100, and a power supply 445, for powering the system 100 in case of mains failure.
[0058] In another embodiment, the portable chemical dispensing system 100 may be particularly adapted to receive calcium hypochlorite briquettes. This may be particularly advantageous where degradation of liquid chlorine may be an issue (as the briquettes have a longer shelf-lift), and/or where manual handling liquid chlorine/bleach drums (which are generally large) is problematic.
[0059] As an illustrative example, Constant Chlor spray technology of Lonza Group Ltd may be used with calcium hypochlorite briquettes to produce and maintain a fresh 1.1 - 1.5% Av C12 liquid chlorine solution.
[0060] In such case, the radar sensor is installed on top of a briquette hopper in order to monitor a briquette level inside the hopper remotely.
[0061] While the above has been described with reference to chlorine, the skilled addressee will readily appreciate that other types of chemical dosing may take place.
[0062] In the present specification and claims (if any), the word 'comprising' and its derivatives including 'comprises' and 'comprise' include each of the stated integers but does not exclude the inclusion of one or more further integers.
[0063] Reference throughout this specification to 'one embodiment' or 'an embodiment' means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrases 'in one embodiment' or 'in an embodiment' in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more combinations.
[0064] In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims (if any) appropriately interpreted by those skilled in the art.
Claims (20)
1. A portable chemical dispensing system including:
an inlet, for receiving a liquid to be treated;
a controller, configured to control a dosing of a chemical in the liquid; and
an outlet, for providing the dosed liquid;
wherein the controller is housed in an electronics portion of an enclosure of the portable chemical dispensing, which is separate to a dosing portion of the enclosure.
2. The portable chemical dispensing system of claim 1, wherein the enclosure is skid mounted.
3. The portable chemical dispensing system of claim 1, wherein the enclosure is formed primarily of sheet aluminium.
4. The portable chemical dispensing system of claim 3, wherein the sheet aluminium is about 3mm thick.
5. The portable chemical dispensing system of claim 1, wherein the enclosure includes separate doors to provide access to the dosing portion and the electronics portion respectively.
6. The portable chemical dispensing system of claim 5, wherein access to the doors is provided by lockable handles.
7. The portable chemical dispensing system of claim 1, wherein the chemical comprises chlorine.
8. The portable chemical dispensing system of claim 7, wherein the chlorine is provided as liquid chlorine.
9. The portable chemical dispensing system of claim 7, wherein the chlorine is provided as powdered, granulated, or briquette based chlorine.
10. The portable chemical dispensing system of claim 9, wherein the chlorine is provided as calcium hypochlorite briquettes.
11. The portable chemical dispensing system of claim 1, wherein the inlet and outlet are coupled to a potable water reservoir.
12. The portable chemical dispensing system of claim 1, wherein the dosing of chlorine is to provide safe drinking water.
13. The portable chemical dispensing system of claim 1, wherein the portable chemical dispensing system includes a plurality of sensors between the inlet and the outlet, to measure a chlorination of the water.
14. The portable chemical dispensing system of claim 13, wherein the controller is configured to dose chlorine at least in part according to the measured chlorination.
15. The portable chemical dispensing system of claim 14, wherein the controller is coupled to a solenoid valve, to provide controlled chlorination of the water.
16. The portable chemical dispensing system of claim 13, wherein a flow of water between the inlet and the outlet is split into two paths, namely a first path containing the sensors, and a second path which does not contain the sensors.
17. The portable chemical dispensing system of claim 16, wherein a pressure regulator and check valve may restrict flow of water into the first path.
18. The portable chemical dispensing system of claim 1, wherein the controller is coupled to a data interface, to enable remote control and monitoring of the portable chemical dispensing system.
19. The portable chemical dispensing system of claim 18, wherein the data interface comprises a wireless communications interface, coupled to the Internet.
20. The portable chemical dispensing system of claim 1, further including a shower, coupled to the inlet, for enabling an operator to shower in case of emergency.
100 155 160 150
135a 160a 160b 105 140 115 130 1/3
145
135b 120
125 110
Figure 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2023239625A AU2023239625A1 (en) | 2016-12-20 | 2023-10-03 | Chemical dispensing system |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2016277578 | 2016-12-20 | ||
| AU2016277578A AU2016277578A1 (en) | 2016-12-20 | 2016-12-20 | Chemical Dispensing System |
| AU2023239625A AU2023239625A1 (en) | 2016-12-20 | 2023-10-03 | Chemical dispensing system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016277578A Division AU2016277578A1 (en) | 2016-12-20 | 2016-12-20 | Chemical Dispensing System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2023239625A1 true AU2023239625A1 (en) | 2023-10-26 |
Family
ID=62748596
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016277578A Abandoned AU2016277578A1 (en) | 2016-12-20 | 2016-12-20 | Chemical Dispensing System |
| AU2023239625A Pending AU2023239625A1 (en) | 2016-12-20 | 2023-10-03 | Chemical dispensing system |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2016277578A Abandoned AU2016277578A1 (en) | 2016-12-20 | 2016-12-20 | Chemical Dispensing System |
Country Status (1)
| Country | Link |
|---|---|
| AU (2) | AU2016277578A1 (en) |
-
2016
- 2016-12-20 AU AU2016277578A patent/AU2016277578A1/en not_active Abandoned
-
2023
- 2023-10-03 AU AU2023239625A patent/AU2023239625A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2016277578A1 (en) | 2018-07-05 |
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