True grit solutions gain traction
20 July 2015, News release from Jacopa
Wastewater solutions and services provider Jacopa is reporting increasing interest in grit removal solutions as water service companies seek to leverage the resources that their sites produce.

Jacopa Key Account Manager Iain Coventry explains: "Companies are
increasingly utilising the gas from sludge created on their sites in CHP
plants in an effort to recover as much energy as possible from this
valuable resource. The problem is that if the sludge is full of grit and
rag, it settles at the bottom of the massive towers that create the
methane and can reduce their capacity to the extent that they have to be
shut down so that the grit can be removed."
Removing the grit is extremely costly and heavy machinery is
required to excavate it, so companies are increasingly looking to
minimise this waste upstream of the energy generating process, he adds.
"The aim is not just to protect the equipment, but to create an asset
that enables the company to generate revenue from what has previously
been seen as a problematic waste stream."
For large sites this means tackling the problem early in the
treatment stream because even if that site's sludge contains relatively
little grit, most major sites import sludge from smaller, satellite
treatment works.
Jacopa offers a number of products that meet the need for better
grit removal, designed to fit with varying site configurations and
requirements. These include the rugged J+A Crossflow Detritor grit trap,
which is designed to remove 95% of grit to produce a largely grit-free
liquid and cleaned, well-washed, drained grit.
The Jacopa J+A Jeta® grit trap also provides a high level of grit
removal within a minimal footprint. Its simple, slow-rotating mechanism
is highly efficient and uses minimal energy.
The Jacopa J+A Bache Classifier grit washer can handle a mixture of
solids from unscreened sewage sources to produce a clean grit. Made from
stainless steel with few moving parts, it is easy to maintain for
maximum design life and durability.
Jacopa also offers J+A Screw Classifier systems, which separate
mineral grit from other types of solids. The Classifier dewaters grit
from grit collection systems, and separates organics from collected
grit.
The J+A Grit Pump is designed to tackle most grit pumping jobs and
has a recessed, vortex flow-type impeller with a large 100mm diameter
solids freeway. An automatic priming option allows the pump to be
installed above water level, giving easy access for service and
maintenance.
www.jacopa.com