& Safety benefits.
No working at height.
(No restrictive harnesses required.)]
No working in the gas
zone. (No very restrictive breathing apparatus required.)
There has to be other
benefits of the above two points as reduced risk assessments and method
statements and insurance implications.)
As the pumps are
externally mounted and the nozzles can be removed and re-installed without
entering the tank there is no reason for the digester to ever go off-line and
Easy removal and
re-installation of the pump and motor assembly, without disturbing any of the
The blades on the
Landia chopper pumps and self-adjusting and do not need to be regularly
downtime of the mixing process.
parts in UK stock. (Over half a million pounds worth of spare parts stock in
the UK available for next day delivery).
Service fleet in the
Service centre in the
Cheaper. (On first
inspection the Landia Gas Mix may appear more expensive than traditional
submersible propeller mixers, however the latter also requires a hatch, a
platform with ladder or stairway and lifting device, all additional costs that
can be missed when pricing for complete units.
Cheaper than a gas
diffuser system that has pads installed on the tank floor to create fine
bubbles, however more often than not columns of mixed and unmixed digestate are
created and additional pumps are installed to do the mixing.
Uses less power.
(Normally run for 7-10 minutes in the hour the consumed power would be 1/6th
of the installed power.
Reduces mixing and
pumping power requirement down-stream. (12.5% reduction FACT!)
No downtime for
servicing – no loss of gas production. (This is not just the day the lid is
peeled back, it can take up to 7 days for the process to fully recover an
average 1MW plant may lose in the region of £7K in revenue each time).
(On average 1 day per unit).
Each installation is
designed specifically for each project this enables the end users specific
requirements to be catered for. (This may be subject to tank design or feed
In built power
surplus, if the feed stock thickens up we just run the units longer as we are
not designing at capacity.
In built variability,
if the feed stock changes e.g. more fibre
or more grit the run times of top and bottom nozzles can be adjusted from the
More gas. (potential
11% more methane).
Reduction in volatile
solids. (potential 11% reduction)
before digestion. (potential 31% reduction in viscosity).