Sewage Treatment Plant

Untreated sewage can affect surface water, groundwater, public health and the surrounding environment. Treatment separates solids, reduces the biodegradable load and prepares the water for the approved discharge or reuse route.

The supplied Pure Waters reference presents sewage-treatment systems from 5 KLD to 100 MLD, covering compact installations and larger treatment requirements.

1. Screen incoming sewage to remove rags, plastics and other coarse material.
2. Separate grit and settle heavier solids before biological treatment.
3. Supply air and biological contact so microorganisms can break down dissolved and suspended organic matter.
4. Separate biological solids from the treated water in a clarifier or membrane stage.
5. Disinfect or polish the treated water where the intended discharge or reuse requires it.
6. Collect, thicken and manage the separated sludge.

• Extended aeration
• Submerged Aeration Fixed Film (SAFF)
• Sequencing Batch Reactor (SBR)
• Moving Bed Biofilm Reactor (MBBR)
• Membrane Bioreactor (MBR)
• Fluidized Aerobic Bioreactor (FAB)
• Fixed Bed Biofilm Activated Sludge (FBAS)
• Biological filtration and oxygenated reactor processes

The treatment technology is selected after reviewing flow, load, available area, inlet characteristics and treated-water requirements. Systems may be provided in civil, mechanical, packaged, containerised or non-containerised arrangements.

Clarifiers, biological media, aeration equipment and sludge-handling components are coordinated so the plant can be operated and maintained as one process.