The mixers in a customer’s Anaerobic Digester had stopped working due to the volume of solids that had built up in the tank. The customer also needed to repair several small holes in the tank. To effect repairs the tank first needed to be emptied and cleaned.
The material in the Anaerobic Digester was broken up using a fire hose connected to a wash out onsite and then vacuumed out of the tank using one of our DISAB Centurions.
The wet material was then transferred directly from the DISAB into our mobile screening and dewatering plant which processed the material and deposited the dry coarse solids into a commercial bin at the rear of our plant and the grit size particles into a skip at the side of the plant. The customer removed the commercial bin using a forklift and tipped the dry material into their dry waste bays onsite for disposal.
Our mobile screening and dewatering plant pumped the screened wastewater back into the customer’s process.
Once the tank had been emptied it was given a final clean using the fire hose connected to a wash out.
Completion of the Works
In a period of ten days we removed, screened and dewatered 900 tonnes of material from the Anaerobic Digester to enable the customer to repair their digester.