High rank anthracite is screened, washed and dried to produce a comprehensive range of water filtration products. The physical and chemical inert nature of anthracite make it suitable for all potable, municipal and industrial processes where the removal of finely divided particulate material from aqueous suspension is required.
Anthracite is used in combination with sand in rapid gravity filters for the treatment of both raw and coagulated settled water. The benefits in this application include longer filter runs, increased filtration rate, improved filtration quality, lower residual aluminium levels and reduced backwash water and power consumption.
The treatment of sewage effluent to remove solids is necessary to meet discharge consents. Anthracite, used in isolation or as a dual media, allows higher filtration rates and reduced operating costs. Anthracite also exhibits a greater capacity for solids allowing extended operation between backwash intervals.
Effective removal of particulate matter from process streams in the chemical, petrochemical, textile, paper and pharmaceutical industries is achieved by the use of anthracite in conjunction with other filtration mediums such as sand and garnet. For process supply water, anthracite provides an effective particulate removal medium in conjunction with other filtration mediums or as support material for mechanical or adsorption filters.
Key features of these products include low bulk density, high void volume, high surface area and tortuous flow path, high solids loading, high permeability. Anthracite filter media can be used in a range of applications.
The product is dried with heat, then sealed in 1 tonne bags and sold directly to the end user.