WssDynamics

LAMELLAR SEDIMENTATION

CAPACITY & EFFICIENCY

WssDynamics® lamellae increase the installed capacity to the same volume and increase its performance to values close to 100%, in accordance with the conceptual parameters of the technology regardless of the design of the tanks. One of the key aspects by which it is possible to achieve this operation is its flow balancing system in each lamellar channel, which allows the elimination of spillway channels, as well as the extreme simplification of the necessary civil works, with the consequent reduction of construction costs.

The conversions carried out to date, replacing conventional tubular lamellae, show capacity increases, in terms of flow, of between 45 and 60%

OCCLUSION LOSSES

The area blocked by the support and anti-float structures of the lamellar modules ranges from 8% to 20% depending on the manufacturer.

WssDynamics^®has designed a support system that generates 0.6% of losses per blind useful surface and only due to the volume occupied by the spacers that make up the internal frame. Practically the entire interior volume of the module is free for the circulation of the effluent, thus achieving the lowest possible speeds and therefore the highest efficiency associated with this factor.

The support / anchoring system eliminates the need for anti-float structures in the upper part of the lamellar package and therefore avoids partial or total blinding of the lateral channels of each module line.

ADVANTAGES

ADVANTAGES OF WssDynamics^® TECHNOLOGY

Shorter distance between lamellae and therefore shorter vertical settling distance (greater capacity) without risk of clogging.
Optimised hydraulics through the perfect balance of the ascending speeds over the entire installed surface.
Losses due to support and anti-float structures of 0.6%.
It does not suffer from the volume of submerged material, as the thickness only contributes to reducing the DVD* (Hazen’s Law).
No guides, corners, staples, welds and surfaces with a “mirror polished” finish, optimal behavior against fouling.
Inability to retain load (sludge) when emptying. Support structures may not be compromised.
Maintenance-free. 24/365 Operational
Walkable lamellar package.
Reduction of decanter construction costs.

TECHNICAL CHARACTERISTICS OF WssDynamics^® MODULES

Model Wss40-12-HV

Homogenization Flow System	Included
Assembly	Internal frame screwed with stainless steel rods
Anti-flotation System	Bottom anchor without upper profiling
Spacing between Lamellae (mm)	40
DVD (Vertical Decantation Distance) (mm)	80
Height of Modules (mm)	1200
Module Volume (m3)	1.2
Lamel Channel Length	1.370

Inclination	60°
Projected Surface Area (m2/m3)	12.5
Total Projected Surface Area per Module (m2/m3)	15
Material	Virgin PP (Polypropylene)
Surface Finish	Mirror Polished
Color	White
Weight (Kg/m3)	65
Losses due to internal frame of the modules (%)	0.6
Losses due to support structures (%)	0

Data provided with modules inclined at 60º and PPV (ρ=0.92).
55º and 65º inclinations available after study of the application.
Available materials: PPV, PPR, PS, (Maximum application temperature according to material).

Dimensioning

In any lamellar settling installation:

The capacity of the installation is a function of:

Installed tank surface.
Height of the lamellar modules.
Orthogonal distance between lamellae / VSD *.
Inclination of the lamellae. .

Performance correction factors:

Hydraulic losses due to the speed gradient.
Loss of effective surface due to support structures, anti-flotation, frames or lamellar thickness.
Velocity distribution through the lamellar package.
Soiling model.

* VSD: Vertical Settling Distance. It is the distance in the vertical dimension that the solid must travel before leaving the lamellar channel at its upper part. Given a settling speed value, once the solids have been characterized, the installation will be correctly dimensioned if the particle has time to travel through the DVD during the time it remains inside the lamellar channel. It is a very simple check that will avoid problems with possible “wrong” values of the projected surface when it has been used to simplify the calculation.