Heinz Australia’s Golden Circle plant in Brisbane was able to sharply improve solids capture and reduce solids waste disposal volumes by upgrading to the high efficiency rotary drum screen from CST Wastewater Solutions .

CST’s new screening technology, which will be showcased at the upcoming Foodpro 2014 exhibition from June 22 to 25, was used by Golden Circle to replace a previous plant with 1.0mm screening capacity. The new installation features a 0.5mm rotary screen, complete with compactor.

Designed, supplied and installed by CST, the new solution allows improved and greater removal of solids from the waste water, with considerably better solids capture, says Michael Bambridge, Managing Director of CST Wastewater Solutions.

He explains that the compact new high efficiency system also allowed the removal of a tall existing structure and hoppers, making solids handling more accessible for the plant operator, improving operational efficiency and enhancing OH&S benefits by reducing solids handling. The compaction unit also reduces, by up to half, the volumes of solids to be transported.

Featuring all-stainless construction including the base frame, fully enclosed for OH&S odour and aerosol control, the new design advances rotary drum screen technology while enhancing durability, hygiene and serviceability.

Key features of CST’s rotary drum screen system include non-lubricated chains and non-metallic drive sprockets; upgraded running wheel design; no mechanical parts in contact with screened solids; corrosion resistance; ability to handle high fat and grease loadings; self-cleaning design; and optional wedgewire slots or perforated holes screening.

According to Mr Bambridge, the new rotary drum screen has a low investment cost, as well as low operational and maintenance costs. The solution can also be customised to specific needs.

CST’s rotary drum screens are recommended for diverse industries including general food processing (vegetables, fruit, coffee, starch processing), beverages (beer, wine, juice, soft drinks), slaughterhouses and abattoirs, tanneries, pulp and paper mills, textile plants, and plastic manufacturers among many more. Municipal treatment plants also use the screens for fine screening of raw sewage, pre-MBR (membrane bioreactor) screening, and sludge thickening.