Decanting Clarifier Tanks TQD

A robust and economic solution.

The decanters / clarifiers Rollier’s TDQ are a robust and economic solution for the recovery of muds in sand washing installations. They are available in several sizes: from 6 meters of diameter up to 12 meters. These Decanters / Clarifiers are economic because they do not have metallic base: a platform of concrete is enough to support it. In consequence, there is avoided the metallic floor and the heavy  structure to bear its weight. The panels are made of sheet folded, robust and simple.

Retractable Scraper

The tanks decanters / clarifiers Rollier’s TDQ have a lifting device included in the scraper. This facilitates the cleanliness of the bottom. The bridge does not turn, but it remain stationary, unlike many decanters of our competitors. Therefore, this allows simpler solutions of implantation and maintenance.

Ease of maintenance

The pump of evacuation of muds is centrifugal, being much cheaper and strong than a pump of screw type Moineau.

System of dosing of flocculant Rollier MONIC incuded in the decanters / clarifiers Rollier’s TDQ

An automatic system of dosing is included. It is provided with the pumps necessary for the circulation of the flocculant liquid prepared for the decanter. Also there can be supplied an optical system of preparation of flocculant blend.

This is the solution for treating the sludge produced when cleaning sand. A circular tank receives the dirty water. This tank has a scraper that can be lifted up, which drives the sludge as it is formed towards the cone on the bed, where it is sucked up by a pump.Before reaching the tank the dirty water is passed to a tray where flocculent water is added, the molecules of this polymer cause the particles in suspension in the water to group together to form lumps. This addition is managed by the MONIC flocculent dispenser, which supplies the flocculent based on the resistance sensed by the scraper, that is, on the consistency of the sludge deposits.The water that remains in the upper part of the decanter, considered clean or clarified, can be discharged harmlessly into the environment or re-circulated to continue washing sand.

ROLLIER supplies TQD series decanters in up to five sizes, depending on the amount of water and sludge to be treated. There are also four sizes of MONIC series flocculent dispensers.

Table of models available in the TQD series. Specifications: Dirty water measurements expressed in cu. m./h clays in T/h)

Model	Ø (m)	m3/h dirty water	m3/h dirty water (max)	T/h clays	Pot. Scraper (kW)	Pot. Pump (kW)	Scraper Liftable
TQD 6,5	6,5	160	200	13	1,1	15	Yes
TQD 8	8	250	300	20	1,1	22	Yes
TQD 10	10	400	480	30	1,5	30	Yes
TQD 12	12	560	650	42	1,5	37	Yes
TQD 14	14	750	850	55	2,2	45	Yes