Salher products

Salher sludge thickeners are manufactured in GFRP (glass fiber reinforced polyester) with orthophthalic resins and are used for the dehydration or thickening of sludge produced during primary and secondary treatments. They are truncated cone-shaped equipment consisting of a central feeding chamber and a Thompson perimeter canal. They can be supplied for underground or above-ground installation, open (CVA-DC-TC) or closed (CVC-DC-TC), with steel supports (CVA-E-TC) or without. Optionally, a gangway, an access ladder with guardrails and EQ-P exit system, a tramex for the upper part, an upper perimeter rail, a manual or motorized purge valve and an agitator can be provided.

For the dehydration of sludge by filter bags, Salher proposes the FILSA model, manufactured in Polypropylene with internal structure in AISI 304. It is used to eliminate sludge from small and medium WWTP. When the bags have separated the most water from the sludge, they are left in drying areas for final dehydration. The bags used are made of a porous material that allows the passage of water and drying air, and at the same time prevents the retained solids from clogging. The low cost of maintenance and energy of this equipment and its high performance (10-20% of dry matter after a few hours, and 40-80% of dry matter after outdoors storage) are important advantages to be highlighted.

The Filter Press (FP) is a fully automated equipment, Salher brand, for the elimination and dehydration of sludge from small and medium WWTP. The dehydration by pressure allows to reach better dryness percentages than other dehydration systems (with results close to 30%, being able to be higher through a correct conditioning of the sludge).

The automatic polyelectrolyte preparation unit (UAP), Salher brand, is a compact device to prepare, mature and dose the polyelectrolyte solution continuously and automatically. This equipment is especially designed to flocculate the wastewater to facilitate the solid-liquid separation. It can be used in the urban and industrial wastewater treatment, during the physical-chemical treatment, but also in the sludge treatment to improve the filter press efficiency.