Construction dimensions

With regard to the static dimensions of the trickling filter construction and
supporting grid, the main design values are as follows as per
DIN 19553-3 3.3.1 (construction requirements) and 3.4.1 (supporting grid):

Thus, considerable cost savings could be made on the construction by halving the vertical loads and eliminating the horizontal load when using SESSIL®. It therefore makes sense to use simple wall and substructures.

    

Tower-type trickling filters

SESSIL® especially cost-effective for use in trickling filters with a height of more than 6m.
Tall SESSIL® trickling filters have the following advantages: 

• Save on energy costs 
• Are considerably cheaper to construct 
• Buffer load fluctuations 
• Have an improved cleaning performance

There is no need to restrict the filling height since the use of a special traction element enables completely new procedural technology to be used.

SESSIL®

• Best possible protection against blockage
• Vertical structure enables optimum sludge discharge behaviour
• Low energy requirement in comparison with cross-flow materials
• Full three-dimensional permeability
• Specific growth surface can be modified to meet procedural requirements
• Filler material grid can be constructed with a lighter static weight
• Trickling filter floor can be designed to be walked upon
• Low transport volume - for example, one 40ft container is required to transport 1,000 m³ of SESSIL® 100 (100m²/m³)
• Low transport weight of around 15 - 20 kg per sack
• Simple, cost-effective assembly
• Low installation weight - around 8.1 kg/m³ for SESSIL® 150 (150m²/m³)
• SESSIL® can be cut to length at its installation location if required
• SESSIL® can be inspected over the entire filling height and at floor level
• Possibility of easy and automatic weight measurement
• Installed aeration device can be easily inspected by moving it to the side
• Specific aerial density can be increased or reduced later on
• Low disposal costs