ABLE to be built into a standard shipping container, a containerised wastewater treatment system has been designed for remote sites by CST Wastewater Solutions.
Using the company’s modular Smith and Loveless FAST Process, the system can be easily transported, installed and operated with minimal engineering and maintenance at worksite and population centres.
The patented Fixed Activated Sludge Treatment (FAST) process is available in individual unit capacities of hundreds of cubic metres a day, which can be multiplied by the use of interconnected multiple units at mining and energy sites, oil and gas facilities and other remote facilities.
In addition to achieving higher loading rates within a smaller footprint, eff luent produced can be recycled into suitable industrial, public facility and commercial processes.
It can be mixed with resource site runoff water, for example, and sprayed on haul roads for dust suppression.
FAST achieves nutrient removal for applications containing high level of nitrogen, a water pollutant that has increased significantly in industrial, commercial and municipal applications and which is an environmental concern particularly to resources, engineering, construction, hospitality, marine, agribusiness and public facility and water and waste water infrastructure organisations.
The FAST process involves a fixed-film, aerobic treatment system designed for tackling variable load and flow conditions.
FAST consists of tankage packed with completely submerged media which creates a high surface area-to-volume ratio, which, combined with internal settling zones, maintains constant bacterial growth during low-flow and peak usage periods typical of many remote installations.
CST Wastewater Solutions’ managing director Mike Bambridge said the system had been shown to be highly reliable in Australia because its stable process withstood hydraulic shock loads and prevented bacterial washouts.
“Simple operation and maintenance means no daily operator requirements and very little annual plant maintenance,” he said.
Built into standard 20 or 40-foot shipping containers or concrete or fibreglass units as required, each FAST unit arrives at the job site as complete, factory-built units or as large components for easy field assembly.
FAST can also retrofit into existing aeration tankage to boost capacity and/or performance without expanding the plant.