Abstract:
A water treatment and recycling system for filtering grey waste water to clear water for stone fabrication equipment includes a waste water storage tank connected to receive grey water from stone fabrication equipment and a clear water supply loop. The clear water supply loop includes a high capacity filter assembly receiving waste water from the waste water storage tank and filtering the waste water into clear water that is provided to the fabrication equipment through a clear water storage tank. The high capacity filter assembly includes at least one high pressure filter unit wherein each high pressure filter unit includes a duplex air diaphragm pump assembly, forfiltering the waste water into the clear water.
Abstract:
An apparatus (1) for delivery of a flocculant to a liquid stream and including: a container (5) enclosing a chamber (10); a baffle (15) extending across the chamber (10) so as to divide the chamber (10) into a first sub-chamber (l0a) and a second sub-chamber (10b). The baffle (15) including passages (20) providing for the flow of liquid from the first sub-chamber (10a) to the second sub-chamber (10b); an inlet (25) in the container (5) extending to the first sub-chamber (l0a) for the delivery of liquid thereto. An outlet (30) is included in the container (5) and extends from the second sub-chamber (10b). The container (5) is adapted to enable replenishment of a block of flocculant in the first sub-chamber (l0a) so that the liquid passing from the inlet (25) to the outlet (30) via the first sub-chamber (10a) and then the second sub-chamber (10b) dissolves the flocculant.
Abstract:
This invention relates to method of utilising a waste slurry from silicon wafer production. More specific, this invention relates to a method for utilising the solid fraction of the slurry, which stems from the sawing or slicing of silicon wafers as a raw material in other industrial processes such as production of certain ceramics, such as silicon nitride bonded silicon carbide and/or silicon bonded silicon carbide.
Abstract:
The invention relates to the recovery and reutilization of sludges from the ceramic industry, which can be utilized as raw material in the formulation of coatings, enamels or ceramic pastes after undergoing an atomization process. The sludges are subjected to an atomization process in which volatile substances and solid impurities are removed. Said process can be directly used in the recovery and reutilization of ceramic sludges thereby providing a technical solution to the problem involving said sludges as toxic wastes due to the fact that the technique disclosed in the invention enables their inertization and reutilization as raw materials. The claims relate to the technique used in the recovery of sludges by atomization, the utilization of the resulting product in the formulation of enamels and ceramic pastes involving inertization thereof.
Abstract:
Provided are metal oxide ceramic materials and intermediate materials thereof (e.g., nanozirconia gels, nanozirconia green bodies, pre-sintered ceramic bodies, zirconia dental ceramic materials, and dental articles). The nanozirconia gels are formable gels. Also provided are methods of making and using the metal oxide materials and intermediate materials. The nanozirconia gels can be made using, for example, osmotic processing. The nanozirconia gels can be used to make nanozirconia green bodies, pre-sintered ceramic bodies, zirconia dental ceramic materials, and dental article. The nanozirconia green bodies, pre-sintered ceramic bodies, zirconia dental ceramic materials, and dental articles have desirable properties (e.g., optical properties and mechanical properties).
Abstract:
A method of neutralising washout from concreting operations comprises the steps of : providing a unit (10) to contain the washout, providing the unit (10) with a store of a neutralising agent (44, 45), receiving the washout in the unit (10), and transferring a washwater component from the washout receiving region (21) of the unit (10) to a washwater containment region (14) of the unit (10), and supplying the neutralising agent to the washout in the washwater containment region (14) of the unit (10).