CASE STUDIES
drain TRADER
Seamless Drainage connection thanks toMoleTechnology
T
he GRUNDOMATmole proved to be a useful piece of kit for contractor JC Balls
& Sons Ltdwhenworking on the construction of the prestigious JCB Golf & Country Club in the Staffordshire countryside. The installation of a 150mdrainage pipe to connect holiday lodges to a pumping station included crossing a 10mwide road that linked two separate areas of the construction site. Excavating the roadwould have caused disruption to the build, unnecessary inconvenience and additional time and cost to the job. So, the company turned to specialist equipment supplier, PSSHire (soon to be named Sunbelt Rentals) for a trenchless solution tominimise the need for digging. With the pipe being laid 2.5mdeep at either side of the road PSSHire recommended a 130mmGRUNDOMATMolewith launch cradle, scope and ranging pole to complete the
job.Two small trenches either side of the roadwere excavated ready for the launch of themole and using the scope and ranging pole, the operatorwas able to guide themole accurately to the exit
pit.The drainage pipe was then attached to themole and pulled into the channel created fromthe first pass. Putting themole into reverse enabled the drainage pipe to be pulled all theway back to where it started in the launch pit; leaving drainage pipe at each end ready for
connection.The job took just 2.5 hours in total –way quicker than digging a trench, laying
the pipe and reinstating the road andmore cost-effective too. During the installation construction trafficwas able to continue using the road ensuring continuity of thewider projectwithminimum disruption fromthe trenchless activity. Brent Smith,MDof PSSHire is a long term advocate of themole technology. “TheGRUNDOMAT is a tried and tested product and highly
efficient.This jobwas the perfect illustration of howtrenchless technology can often provide themost cost- effective solution for a pipe installation.”
PhoenixandLandiafixthe mixatLeachateLagoon L
andia aerators are playing an important role in the success of Yorwaste’s
HarewoodWhin Leachate Treatment plant, which has been extensively upgraded by Phoenix Engineering. Managing over half amillion tonnes ofwaste per year in Yorkshire, Yorwaste brought in Phoenix Engineering to carry out detailed process studies, and then to design and construct amajor refurbishment of the treatment plant, originally built in 1990. This included the enhancement of a challenging oval-shaped lagoon,which during thewinter
24 drain TRADER | July 2020 |
www.draintraderltd.com
monthswas not achieving sufficient biological treatment efficiency.
JontyOlufsen,Managing Director of Phoenix Engineering, explained:
“We designed a newlagoon arrangement to focus on treating higher strength leachates within the landfill,whichwere a problemfor the previous treatment plant system. During thewinter, the existingmechanical floating aeratorsmeant the lagoon could only operate at around 5 degrees C,when to achieve the most effective biological treatment, it should have beenmore like 20 degrees C”.
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