Case Study

	Please click on images to enlarge
	Contaminated mine water		Sign showing project plans for area
	Construction of settlement lagoons		Completed settlement lagoon in use

Aspull Sough Minewater Treatment Scheme
 
The Aspull Sough Colliery just North of Manchester was producing between 40 and 70l/s of contaminated mine water. The mine water was contaminated with 43mg/l of Iron and 2.4mg/l of Manganese.
 
The location of the existing discharge point did not contain sufficient land to allow the treatment works at that location. A pumping station was constructed together with 800m of rising main and gravity sewer to allow the mine water to be pumped up to a suitable location.
 
The treatment works consisted of 3 large settlement lagoons which contained floating aerators. The aerated liquor then passed through 3 GCL lined Reed Beds prior to returning down the gravity sewer to the discharge point.
 
Ascot Environmental were responsible for the mechanical and electrical design of the pumping station and the sizing of the rising main.