Waste water treatment with biofiltration system

compact

The treatment of water polluted with solids is carried out in most cases with filter systems. They operate according to the sedimentation principle. Suspended matter is retained in the filter and deposited. The filtered water can subsequently be diverted and used. Nature serves as a model for this principle: Bank filtrate is water that is constantly trickling through the river bed and soil into the ground water. On its way through the different soil layers, the water is cleaned. Filter systems are used in almost all areas of water treatment, including Drinking-water treatment Waste-water treatment, e.g as pre-treatment prior to filtration or for final treatment according to biological aeration methods Industrial process water treatment, e.g. in the paper and pulp industry Different designs Various system types are suitable for obtaining water free of suspended particulates. With gravel and sand filters, waste water is passed through a filter system, which is filled with mineral material of ever-finer grain (“from coarse to fine” filter principle). Space-saving lamella filters A special construction of filter systems are lamella filters (also: lamella system, lamella unit or lamella separators). Lamella treatment systems are economical and particularly space-saving filter types for optimised sedimentation. With lamella treatment systems, the actual filtration area is divided into several individual, overlapping filter elements. Thus a large filter area is achieved in a small space. This allows optimised sedimentation as well as compact system design. Function of filter systems Contaminated water is introduced into a specially dimensioned inlet chamber.