The Continuous Vacuum Filtration Machine, or CVFM has a filter membrane that is used to filter liquids by means of filter cloth. The wastewater is fed into the filter from above, and gets evenly distributed over the entire membrane width through the CVFM. The device is a hydrostatic filter membrane, where all parts in contact with media.
The filtration is done by a self-sealing filter membrane, which is matched to the particular application. The filter membrane is fed into the water chamber from the bottom. The filtration is performed on an inclined plane, whereas the actual filtration happens in the lower part of the membrane, and a post-dewatering of the filter cake takes place in the upper part.
The filter membrane is transported and coiled by a gear motor. The gear motor is switched on once a certain water level is exceeded. A float switch controls the membrane transport and the filter cake is stripped off into a dirt tank. The filter membrane together with the filter cake is then pulled upward, the cake is stripped off and the membrane is taken up by a roller filter. At the same time, new membrane is drawn into the chamber at the bottom end of the membrane.
For the permanent concrete pre-cast C-VFM, the structural integrity and design of the equipment are tested and complied with the Australian Certification Authority and Engineers Australia.
The RCB box is installed on a 6-meter high steel pole. The pole is anchored to the concrete floor to prevent it from being washed away from the flood.
Submersible wirings and electronic parts used are rated IP55 - this means that any water projected against enclosure from any direction shall have no harmful effects to the wirings of the permanent C-VFM.
During flood season. The high current water flow will just run over the C-VFM. the Bureau of Meteorology regularly issues Flood Warnings and River Height Bulletins for most of the Queensland river basins.
They are sent to radio stations for broadcast, local Councils, emergency services and a large number of other agencies involved in managing flood response activities.
The Fish habitat will not be degraded since the CVFM is built in a portion of the waterway only. As it will have a passageway for fish to swim in and out across the filtration unit. As the water quality improved as it passes the CVFM. The water will be cleaned and free from contaminants and silts that flows from the storm water drain to the waterway. The CVFM is equipped with motion sensors that when it detected a group of fish it will signal the automatic door to open so fish can pass through.
The CVFM has a replaceable filter membrane that is used to filter liquids. The device is a hydrostatic filter membrane, where all parts in contact with media. It is created from a 7-year experimentation and development. This filtering system was designed to filter most of the contaminants and chemicals from wastewater or agricultural runoffs. It is made up of 4 layers of very thin sheets designed to filter chemicals, fertilizers, pesticides, silts and oil.
First, two rolls of membrane are joined by overlapping each other. The bottom layer is made up of reinforcing fabric containing woven paper micropores, ranging from 5 to 20 microns. It will then be overlapped with the third layer composed of flocculants. These promotes clumping of materials, which means that there is no formation of cakes since all the flocs are in suspension state.
The second layer is composed of either activated carbons, carbon nanotubes or nano silver, depending on the purpose or application. All germs, viruses and bacterial contamination are filtered and eliminated while passing through the filter membrane, regardless of wastewater sources.
Water4Use is working with nanotechnology, which has emerged as one of the top innovative technologies with great potential for treating wastewater in a more effective and efficient manner than methods that have been previously used.
Finally, the filter paper cloth layer is a semi-permeable barrier placed perpendicular to a liquid, used to separate fine substances from liquids.
This filter membrane is designed only by Water4Use.
Water4Use has developed onsite water filtration technology targeting water reuse opportunities across commercial industry as it continue its project. One challenge for Water4Use is cleaning groundwater that was polluted by industrial or farm runoffs. Through continuous research and development on processing wastewater, Water4Use R&D have discovered that using nanotechnology in particular, iron nanoparticles, on treating groundwater can rapidly degrade pollutants (such as fertilisers, pesticides, etc.) to make a mix of harmless by-products.
As the stormwater enter drains and flows across the soil, it carries contaminant (such as Arsenic, chlorinated solvents, metallic compounds, etc.) that will contaminate the groundwater. Water4Use is presently working on R&D projects that operates on groundwater clean-up. Water4Use R&D found a way on cleaning groundwater through vigorous experimentation and testing. One way to clean groundwater is to drill two wells apart from the suspected contaminated area, depending on the flow of water in the aquifer. The first well is drilled on the upstream and the second is place on the downstream area. The process is by using a filter membrane whose membrane layers consist of carbon nanotubes and the other layer with iron nanoparticles. This material consists of particles whose surface has many Nano size pores. Process starts from suction from the aquifer through the Continuous Vacuum Filtration Machine and pumping back groundwater that is mixed with iron nanoparticles. The nanoparticles then attract contaminants, as suction occurs, and it will go through the filter membrane where contaminants will be filtered on the uppermost layer. As it goes through in it, the excess iron nanoparticles with attracted contaminants will be trapped from the energized layer of the membrane with a combination of activated carbon. And as it exits the membrane the injected iron nanoparticles from the bottom layer will be carried and mixed to the discharged groundwater into the ground. The process is repeated until the groundwater is contaminant free.
The other way of treating groundwater with iron nanoparticles is when rain event is forecast. Before rain event, inject iron nanoparticles into the ground. As the rain falls it will naturally drained into the ground. The process also helps clean the soil from any pollutants that’s trap within it. Undergoing the same process by the use of Continuous Vacuum Filtration Machine, the groundwater will be treated from the filter membrane designed by Water4Use.