Highlights
Compact design for ease of handling, access and installation enables suitability for all site conditions including bedrock or high water table
Low energy compressor ensures minimal running, maintenance and servicing costs
Internal recirculation (from final to primary chamber) continues treatment process to provide higher effluent quality whilst balancing flow over 24 hour period or periods of intermittent use
Unique ‘keying-in’ lip to assist anchoring into granular or concrete surround
Optional extras include patented Polylok filter to further reduce suspended solids and extend life of drainage field, extensions for deep installations and pumped outlets for sites with adverse levels
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Details
In addition to the anaerobic digestion taking place in the primary settlement tank (as with septic tanks) the Micro unit allows the clarified water to pass into a second ‘aeration’ chamber where it is treated to remove the dissolved constituents.
Here aerobic bacteria, supported by diffused air and mobile media, ensure full treatment is achieved before the treated effluent (and ‘sloughed off’ bacteria) flow to a final settlement chamber prior to discharge.
PSTP’s (Packaged Sewage Treatment Plants) should be sized using the latest version of British Water Flows & Loads which provides detailed information on sewage production figures and sizing calculations – please ask us for help sizing sewage treatment plants
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.


