The modern, cost effective way to mix slurry.

  • Maintains slurry in an homogenous state
  • Reduces odour during storage and spreading
  • Reduces ammonia emissions
  • Reduces hydrogen sulphide emissions
  • Reduces methane emissions
  • Produces slurry with uniform nutrient content
  • Reduces pathogens
  • Encourages quicker grass re-growth
  • Is economical to run
  • Is kinder to beneficial soil life
  • Has no moving parts in contact with slurry
  • Is suitable for new or existing above or below ground tanks and lagoons
  • 5 year extendable warranty available

Low-rate intermittent slurry aeration is considered to be one of the best ways of keeping slurry in an optimum condition for spreading without the need for extensive mixing with traditional over –the -top mixers and side- stirrers, which can be very costly in terms of man-hours and diesel.

Compressed air is injected into the slurry in defined areas, one area at a time, via non-return valves. The action of the bubble rising to the surface physically agitates the slurry and allows oxygen to be introduced by diffusion, both from the bubbles and from the atmosphere at the constantly changing slurry surface.

The introduction of oxygen discourages the growth of anaerobic bacteria which are responsible for the production of methane and the obnoxious odours associated with volatile fatty acids. Methane is a greenhouse gas which is 21 times more ‘potent’ than CO2 – reducing the quantity emitted from stored slurry can only be seen as a positive step. Odour reduction during storage and spreading will help to keep your neighbours happy! As pathogens such as E.coli and Salmonella spp. occur in anaerobic conditions slurry which has been aerated will be safer for livestock and humans.

Trials carried out in Ireland by AFBI and Teagasc have shown that air mixing, using the Aeromixer enables safer slurry mixing within occupied buildings. Slurry, which has been mixed by low-rate intermittent slurry aeration, does not require extensive mixing prior to removal as it is always in the optimum condition for pumping. You must still, however, follow reasonable safety precautions.

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How the system works

The compressor is activated by the digital clock in the control panel. Air is fed into the primary rotary valve which feeds the 12, 16 or 20 port rotary distribution valves, which are fixed to the top of the tank or to the walls above a cellar.

The rotary distribution valves are connected, by Polyethylene pipe, to the 2 or 4 outlet manifolds which are securely fixed to the floor with stainless steel fixings. Only 1 port, in the whole system, is ‘live’ at any time, causing air to be jetted out at 2 or 4 specified points. The pneumatic distribution rotary valve then revolves to open the next port.

The system works during the night for the amount of time required dependent upon the tank size.

Low-rate aeration enables Nitrogen to be retained in soluble form within slurry thus reducing loss of nitrogen as ammonia emissions. If spread correctly this may help to reduce the requirement for bought-in fertilisers – which is not only good for the environment but for your wallet.

As the nutrients within aerated slurry are uniformly distributed it is much easier to calculate application rates accurately as each load spread is the same.

Farmers have reported quicker re-growth of grass and increased palatability after spreading with aerated slurry. It is also kinder to beneficial soil life such as earthworms.

We know that slurry mixing is a difficult process, however, using the Ameram Aeromixer makes it an easier job! So why get ‘agitated’ over slurry agitation?

Use the Ameram Aeromixer and see how easy it can be!

Our design is the result of experience

Rotary Vane Compressor

Single phase 1.75kW
1 bar pressure
40m3/hr air per twin outlet – at up to 8m slurry depth
HIGH efficiency at HIGH pressure
Quiet – 75 db(A)
Single or 3 phase available

  • No Gearbox
  • No Oil
  • No Belts
  • No Large Heat Dump

Why we don’t use Blowers

Blower volume output and efficiency falls as working pressure rises
Blowers require oil and seals and gearbox or belts
Blowers require extra servicing
Blowers require large heat dumps

Control unit

Automatic or manual controls
10year+ silicon chip clock
Simple daylight-saving change
Hours-run counter
Located in aluminium weather house with the compressor

Rotary Distribution Valve (Patented)

Up to 4 per system – each with 12, 16 or 20 ports. Only 1 port open at any time.
Pneumatically operated
Maintenance free
Safe, simple and EFFECTIVE

  • No electric motor
  • No power cable to valves
  • No gears

Our history with air distribution valves

In 1994 we used solenoid valves but found them to be unreliable and produced significant pressure loss.

In 1998 we designed and built rotary valves operated by a 24 VAC motor but found that motors, gears and bearings required maintenance and that electric cables, to feed the motorized valves, strung out across cattle buildings had inherent dangers.

In 2005 we designed and patented the first fully pneumatic rotary valve – over 1000 have been made since.

Outlet Manifolds

Only 2 or 4 outlets per rotary valve port
Neoprene non-return valves
Flowed bend polyethylene pipe work for minimum flow loss
Stainless Steel fixings
Good bubble equality
No ‘hind teat’ problems