Description
Thickening is often the first step in a sludge treatment process. Sludge from primary or secondary clarifiers may be stirred (often after addition of clarifying agents) to form larger, more rapidly settling aggregates. Primary sludge may be thickened to about 8 or 10 percent solids, while secondary sludge may be thickened to about 4 percent solids. Thickeners often resemble a clarifier with the addition of a stirring mechanism.Thickened sludge with less than ten percent solids may receive additional sludge treatment while liquid thickener overflow is returned to the sewage treatment process.
FGT Series is Widely used prior to belt press, plate filter press , centrifuge and other kinds of sludge dewatering units in municipal and industry wastewater treatment .

Features
FGT Gravity Belt Thickener
1. Main structure made of stainless steel.
2. Cylinder tensioning device. Integrated dewatering  system, continuous auto running;
3. Optional of stainless steel and polyester for drum sieve belt cloth.
4. No operation fault as bearings adopt tin bronze (graphite) self-lubrication copper sleeve
5. Low Power  consumption : power requirement and greenhouse gas emissions, even including washwater booster pumps, are typically 20% ~30% of other sludge dewatering unit .
6. Widely used prior to belt press, plate filter press , centrifuge and other kinds of sludge dewatering units.
7. Polymer  rate : Offers the lowest possible polymer dosage rate
8. Enclosed : To fit covers around all the zones of the unit  so that ensure the worksite clean .

SFC Gravity Belt thickener mechanism
1. Sludge  pump into the mixing reaction tank, sufficiently stir and fully mixed with the polymer solution from polymer dosing system.
2. Sludge is rapidly flocculate into large particles by the fine particles, and large-group flocs  formed into the network structure, then flow into the gravity belt thickener.
3.Most of the free water is released through the gravity belt filter cloth  . Reach the purpose of  pre-dehydration .

Application Field

Specification		FGT Series Gravity Belt Thickener
		FGT-700	FGT-1100	FGT-1600	FGT-2100	FGT-2600	FGT-3100
Belt Cloth(mm)		700	1100	1600	2100	2600	3100
Treating Capacity (m3/hr)   SS 0.4%~3 %		5~15	8~20	12~40	30~60	40~80	60~100
Dried Sludge D.S.(Kg./hr)		150~250	150~400	250~500	300~650	500~800	600~1000
Sludge outlet concentration (%)		3.5~11	3.5~11	3.5~11	3.5~11	3.5~11	3.5~11
Power Consumption (KW)	Driving Motor	0.37	0.55	0.75	0.75	0.75*2	1.1*2
	Thickener Motor	0.37	0.37	0.55	0.55	0.37*2	0.55*2
	Washing pump *	0.75	0.75	1.125	1.125	1.5	1.5
Filtrate Collecting Tray		YES	YES	YES	YES	YES	YES
External Dimension (mm)	Length	3600	3600	3800	4500	4500	4500
	Width	1100	1500	2000	2500	3000	3500
	Height	1200	1200	1200	1200	1400	1600
Reference Weight (kgs)		700	1100	1300	1600	2000	2500
* Washing pump for optional