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СТАНЦИИ, ОБОРУДОВАНИЕ И МЕХАНИЗМЫ ДЛЯ ОБРАБОТКИ ВОДЫ

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Sludge Thickener and Dewaterers

The sludge line in a civil or industrial sewage treatment plant is important and has management costs that sometimes are the same as those for the water line. It is therefore very important to be able to thicken the sludge before conveying it to the subsequent treatment cycles and free it as much as possible from the water before the final disposal.
The range of SERECO products includes gravity thickeners, dynamic thickeners and belt presses for the final dewatering.
In particular, the gravity thickeners are with central (IFCC) or peripheral (IFTP) drive.
The dynamic rotating drum thickener (IFD) is generally used to reduce the water percentage in the sludge before the putting into the belt presses for dewatering.
Actually, the belt presses NPF_MP and NPF_HP types allow the sludge to contain high water percentages at the inlet, nevertheless reaching high dry content at the outlet. This is due to the presence of an initial gravity table, integral with the belt press, which carries out a drastic reduction of the water percentage in the sludge before being submitted to the rollers pressure.
The belt press NPF type offers instead the great advantage of the compactness and completely closed execution which are a guarantee of hygiene and safety.
The NPF_MP and NPF_HP types are recommended for the treatment of big quantities of sludge, with belt up to 3 m wide.
The NPF_HP type is the leading model of our current production, with wide working area of the belts, huge initial gravity table, first drainage roller with big diameter to treat also sludge difficult to be dewatered, nine smaller rollers with high pressure required to achieve high performance in dried products at the outlet.
Any belt press models can be supplied with a sludge pre-reactor dimensioned from time to time to ensure a contact time between sludge and polyelectrolyte adequate for the obtainment of an optimum flocculation.
SERECO, which has been since long operating in the treatment field, always aiming at solving any problem and minimizing the management costs of the plants, has decided to offer the sludge belt press dewatering system which currently is the technological product that, for the same sludge load, boats the lowest energy consumption, the greatest operating reliability and a reduced ordinary maintenance that can be easily carried out by the technicians entrusted with the plant maintenance, without resorting to expensive and frequent shipments of the equipment to the manufacturer. A comparison with the operation and maintenance costs for centrifuges, plate filter presses or other sludge dewatering system is even inconceivable.
SERECO sludge line also comprises further machines that are not included in this section dedicated to thickeners and dewaterers only. In particular, the anaerobic sludge digesters (DACS) and the sludge heat exchangers (SCF) are present in the section dedicated to digesters-gasometers-exchangers, and the polyelectrolyte preparation and dosing unit (PDP, PDPA) in the section dedicated to dissolution groups.

Sludge Thickener and Dewaterers

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