Scaffolding structures that need to be designed


August 6, 2014 Johnny 0

Scaffolding There is a limit to the safe working height at which a worker can access the building work from ground level. Therefore some form of […]

Trickling Filters

Trickling Filters & Advantages

March 21, 2014 Johnny 0

Trickling Filters What Are Trickling Filters? •Fixed media treatment system •Waste water is distributed over media colonised by micro-organisms •Consists of a  bed of highly […]