Domestic water and wastewater treatment products

Sewage treatment plants

Ensign:Ultra™

Ensign:Ultra™

Ensign Ultra sewage treatment plants Marsh Ensign Ultra sewage treatment plants are widely regarded as the most efficient, reliable and economical domestic systems on the market. The standard Ensign has been adapted to improve reliability and the Ensign:Ultra now brings unique enhancements[...]

Shallow Ensign:Ultra™

Shallow Ensign:Ultra™

Shallow Ensign Ultra sewage treatment plants Common sewage treatment plants on the market often exceed 2.3m high. Marsh Industries offer a range of Shallow Ensign Ultra sewage treatment plants from 4-35PE that are only 1.6m in height, meaning installation is not only[...]

Ensign:Standard™

Ensign:Standard™

Ensign sewage treatment plants Marsh Ensign sewage treatment plants are widely regarded as one of the most efficient, reliable and economical systems on the market. The Ensign:Standard is a robust unit with no internal moving parts meaning simple installation and commissioning and[...]

Shallow Ensign:Standard™

Shallow Ensign:Standard™

Shallow Ensign sewage treatment plants Common sewage treatment plants on the market often exceed 2.3m high. Shallow Ensign sewage treatment plants from 4-35PE are only 1.6m in height, meaning installation is not only possible*, but easier and safer too. *Shallow Ensign’s are[...]

Intensive biological processing for off-mains wastewater

Package Sewage Treatment Plants (or PSTP's) are often a suitable option where groundwater in the surrounding environment is vulnerable, drainage field percolation values are restrictive, or direct discharge to a drainage field/watercourse or surface water sewer is the prefered discharge method.

Guidance notes:

  • PSTP's should be sized using the latest version of British Water Flows & Loads which provides detailed information on sewage production figures and sizing calculations
  • Regulatory authorities for the control of pollution in the UK normally require treatment plants conforming to BSEN12566:3 to be demonstrated as capable of producing a minimum effluent discharge quality of 20:30:20 (Biochemical Oxygen Demand;Suspended Solids: Ammoniacal Nitrogen in mg/ltr), although in certain areas more stringent site-specific qualities may be required
  • No surface water should enter the system as this can reduce the system's capacity and cause solids to be flushed out which may prematurely block drainage field or cause pollution
  • As with septic tanks sludge should be removed annually or in line with manufacturers instructions