Vortex Sewage Treatment Plant

The VORTEX® Eco Electric sewage treatment plant is the only ADJUSTABLE sewage treatment system in the UK.

It can be set to work with varying populations simply by turning it either up or down on a hand-turn valve and has much LOWER OPERATING COSTS than all Non-Electric Plants

Approved by the Environment Agency and on the British Water Certified List.

Unique Features of the VORTEX® Sewage Treatment System Vortex sewage treatment plants - different invert depths

  • Extremely clean effluent - up to 98.9% pollutant reduction. Also OK for Northern Ireland with 98.2% BOD reduction.
  • Fully adjustable to suit the number of people using it.
  • The lowest electricity consumption of any electric plant - from only £25/year.
  • Much lower maintenance costs than Non-Electric Treatment systems.
  • Odourless - complete aerobic digestion throughout the sewage treatment plant.
  • One piece tank construction - not sectional - no leaking seals.
  • Very small size enables economic installation in tight spaces.
  • The VORTEX has a unique debris screen - The Vibro-Screen™ keeps tampons, wipes, etc. out of the plant but lets organic solids through.
  • The VORTEX recycles its own waste products resulting in less sludge to remove.
  • No Primary Settlement Tank - No Primary Tank Odour.
  • No need to buy a separate sampling chamber - there is a unique sampling point within the tank. This saves you another £300.
  • Simple and cheap maintenance - one piece construction ensures no structural weakness..
  • Top Quality linear motor compressor - these compressors are much more expensive than cheaper diaphragm compressors used by other manufacturers, but they are almost silent, use very little electricity and CAN be repaired.
  • Cheap, easy installation. No Concrete needed for dry sites
  • 10 year tank warranty- no metalwork to corrode inside or outside the tank.
  • Can accept sewage pumped into it if required.
  • Versatile inlet depths - Vortex sewage treatment plants can be supplied for 160mm, 650mm or 900mm inlet invert levels.
  • Can be manufactured with the inlet and outlet on the same side at no extra cost for difficult sites.
  • EN 12566-3 2005 Test Report available on request.
  • Unbeatable ammonia reduction - incredibly down to 0.4mg/L. Very important for sensitive watercourses.
  • Accepted by the Environment Agency for discharge to watercourses and ditches, without the need for a permit, if the installation complies with the General and Binding Environment Agency Rules. If you have a ditch locally, Click here to find out if you own the ditch at the other side of your boundary. You may be surprised.
  • The Vortex sewage treatment plant range is 4, 6, 8, 10, 15, 20 and 30 person sizes.
  • Vortex plants are exported worldwide, from Iceland to Mongolia.

How the VORTEX® Wastewater Treatment Plant Works

Most sewage treatment plants struggle to work when they are under-loaded. A good rule of thumb is that if a plant is working below 50% of its design capacity, there is not enough 'food' from the toilet solids to either grow, or maintain, a working bacterial population. The Vortex has solved this problem by having a simple hand-turned valve that can turn the amount of air required either up, or down, depending on the number of people using it. Such a SIMPLE solution to a complex problem.

Click on this link for a  video of a severely underloaded Vortex 8 person plant which has been used by only 2 people for over 3 years. The final effluent in the Central Discharge Trough is crystal clear and the plant has NEVER been emptied. 

The Vortex™ has advanced activated sludge features not found in any other sewage treatment plant in the UK.

The ONLY electrical component is a small, external linear motor compressor which operates ALL the process stages. There are no pumps, motors or any moving parts within the plant. Click for How the VORTEX™ sewage plant is so energy efficient

The VORTEX sewage system processThe Vortex Treatment Process (Schematic diagram only)

Wastewater from the building enters to Vibro-Screen (1). Here coarse air bubbles are used to physically break down solid matter and form a mixed liquor with the water.

The mixed liquor flows into the Aeration Chamber (2). A bacterial culture is present in the Aeration Chamber which digests the pollutants in the wastewater. The bacterial culture must have a constant oxygen supply and this is provided by a fine bubble diffuser at the base of the tank.

UNIQUE FEATURE - The last red air valve on the control module allows the air to be regulated, more or less, to the diffuser. This enables the plant to be adjusted to work at maximum efficiency if it is underloaded. This is a very valuable feature, e.g. for a 5 bedroom house (which needs a minimum 7 person plant) with only 2 people resident. This feature is not available on any other plant.

The mixed liquor then flows into the Clarification Chamber (3) where it is able to separate into clear, treated effluent and sludge. The clear effluent is able to flow past the scum baffle and out of the tank.

The VORTEX sludge management systemThe Sludge Management System (SMS)

In the Clarification Chamber sludge accumulates at the bottom (settled sludge) (1) and top (floating sludge) (1) of the tank.

Air from the blower spurs from the regulator (2) to two sludge return pipes (3).

This creates a continuous vacuum that sucks the sludge from the bottom of the Clarification Chamber back to the Aeration Chamber.

The floating sludge is sucked off for 5 minutes every hour, automatically, and returned to the Digestion Chamber.

Unique Automatic Floating Sludge Return (FSR), included with all models

In all Activated Sludge Process (ASP) sewage treatment plants, floating sludge accumulates at the top of the Clarification Chamber. This sludge must be periodically returned,to the Aeration Chamber. With all other ASP plants, this has to be done by hand by the owner and it is not a pleasant task. All Vortex plants come with the Automatic FSR fitted as standard.

The Automatic FSR enables the Vortex to automatically recycle the floating sludge in the Clarification Chamber back to the Aeration Chamber without the need for the owner to do anything.

No other ASP sewage treatment plant has this ability to manage its own sludge.

The FSR kit can also be fitted retrospectively to existing, older Vortex plants very easily.

Principles of the treatment process

Incoming sewage is screened to prevent accidental non-degradable products entering the digestion chamber. The Vibro-Screen™ allows organic sewage solids to enter the tank without problems.

The screened sewage is aerated and a microbial 'soup' develops that digests the pollutants and organic matter in the sewage. These beneficial microbes are constantly topped up with the microbes that settle out at the bottom of the final settlement tank, ensuring a constant supply of bacteria for the digestion process. There is no need to add extra bacteria at all, as is the case with some other plants.

The treated sewage then enters the final settlement chamber where activated sludge bacteria settle out at the bottom. These beneficial microbes are constantly returned to the digestion chamber to boost the treatment system performance.

The bacterial scum or crust that forms on the top of the effluent in the clarification chamber is returned through a pipe to the digestion chamber via the FSR  pipe.  This is an innovation unique to the Vortex™. Other activated sludge plants need this crust removing, by hand, at regular intervals.

It saves a lot of unpleasant work for both the owner and the service engineer, resulting in lower cost servicing bills.

Please click on the link to view a video on how to initially set-up the Vortex sewage treatment plant.

Please read Tank Delivery and Off-Loading Information before ordering.

Vortex 6 person sewage treatment plant - normal

Normal Installations - 550mm. inlet invert

VORTEX 4, 6, 9 and 12

Shallow Installations - 200mm. inlet invert

VORTEX 4, 6, 9 and 12

Deep Installations - 950mm. inlet invert

VORTEX 4, 6, 9 and 12

Normal Installations - 750mm Inlet Invert

VORTEX 16, 21 and 30

Shallow Installations - 350mm Inlet Invert

Vortex 16. 21 and 30 person

Installation and Technical Vortex 6 with Reversed Outlet

VORTEX Installation Manual

VORTEX Technical Data Sheet

EN12566-3 Results

VORTEX Underloading at 10% EN Test Results - for large houses with small populations.

VORTEX User Manual

VORTEX sewage treatment plant maintenance and servicing engineers