PRIMARY WASTEWATER TREATMENT
The primary treatment of wastewater, is the treatment of the water before any biological treatment. Mechanical and/or chemical-physical systems are used for this treatment.
Tecno Aqua proposes:
These systems vary depending on the flow rate and type of solid to be separated.
Canal grid with comb: consists of a series of fixed rod racks anchored at the bottom of the canal with a tilt of 75 °. The rack consists of single flat bars that are cleaned using a comb when needed. The comb is flanged to the trolley cart, which is driven by a gear motor using a gear wheel system. As soon as the comb begins to climb, the grill is transported along the grate bars and through a comb, mounted in the drainage area, the grate material is removed from the rake.
Rotating drum grid: consists of filter bars through which the water to be treated filters from the inside outward through the rotating drum and is discharged, while the solids are held back and brought out by an inner auger. This grid provides a self-cleaning system for the internal nozzles.
Flotation system (primary): allows separation of suspended materials from the liquid to be treated. This separation is achieved through the use of chemicals and microbubbles that incorporate the particles to be eliminated and brought to the surface. The solids that come to the surface appear in the form of sludge, which can be: sent to the plant sludge treatment section or reused in the paper mill. Clarified waters are recycled into paper mills.
Sedimentation system (primary): allows the separation and collection of suspended materials in the water through precipitation of the same at the bottom of the tub thanks to the use of chemical elements. The solids that sediment generate a sludge which can be: sent to the plant sludge treatment section or reused in the paper mill. Clarified waters are recycled into paper mills. The separation efficiency is greatly increased by the use of coagulants and flocculants.
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