Sewage Treatment

Sewage treatment is the process of removing contaminants from municipal wastewater, containing mainly household sewage plus some industrial wastewater. Physical, chemical, and biological processes are used to remove contaminants and produce treated wastewater (or treated effluent) that is safe enough for release into the environment. A by-product of sewage treatment is a semi-solid waste or slurry, called sewage sludge. The sludge has to then undergo further treatment before being suitable for disposal or application to land.

Waterman SD offers a range of plants designed to meet local discharge standards for the treatment of Sewage in all environments. We pride ourselves on the excellent standard of our systems that are designed to meet the following criteria every time:

• COD: <75
• SS: <25
• NH3: 6
• E-coli <1000

Waterman SD always takes the time to assess the environment and the needs for the treatment plant to create a solution that will best suit the client as well as the environment. In sensitive receiving environments such as wetlands, we treat the environment as top priority, designing the plant to achieve special standards that meet the needs of the environment around it.
Waterman offers submerged fixed-film aerated bioreactors which come in three available options depending on the client’s preference and project requirements:

1. Concrete housed system
2. Containerised treatment system. Ideal for short to medium term projects, with modular systems and plug and play design.
3. Freestanding STP’s. We use chemical grade roto-molded tanks, affordable and UV protected.

In conjunction with the choice of system setup; all systems include post treatment clarifiers and disinfection further ensuring the best solution to meet the client’s needs. Furthermore, upon request, Waterman SD can include pre-treatment – where septic tanks are not available.

You can always be assured of Waterman SD’s standard of excellence.