Rotary Drum Thickener

Economical and Effective

The Enclosed Sieve Drum Concentrator offers compact and easy installation for small to medium sized plants. A zero trunnion design brings long life and easy maintenance with low energy, polymer and wash water consumption.

Product Data

Description

Our ROEFILT Sieve Drum Concentrator (SDC) reduces the volume of thin sludge and slurry produced during municipal or industrial wastewater treatment. The principle of the SDC is very simple: Sludge is flocculated with polymers and the released water is drained by gravity through a filter drum while rotating. The sieve Drum concentrator is an efficient alternative to the Gravity Belt Thickener if your circumstances involve limited space or less demanding performance requirements.

Efficient and effective performance

The ROEDRUM is a Sieve Drum Concentrator (SDC) for extremely efficient volume reduction. Sludge thickened by the ROEDRUM can practically double digestive volume. The uncanny ability of Charter Machine’s Sieve Drum Concentrator to thicken sludge will profoundly reduce hauling and disposal costs. The ROEDRUM’s unique design has given it several advantages over it’s counterpart, the ROEBELT. The small size, compared to the ROEBELT helps designers and engineers save expensive real estate. Due to the total containment of sludge and filtrate, a no-spill operation can be guaranteed and H2S control is easily achieved. Continuous back-washing of the drum filter cloth and gentle tumbling of the sludge provides the highest capture rates possible (99%+). The ROEDRUM is operated with a fraction of a horsepower, and it’s polyester filter cloth has nearly an unlimited lifetime. Because Charter Machine has been fabricating these gravity dewatering devices since 1970, we can proudly state that we have written the book on Sieve Drum Concentrators. The ROEDRUM is available in five different models: SDC45, SDC 90, SDC 125, SDC 180 and SDC 300

General Specifications

Type of Sludge	Feed %	Cake %	Polymer Consumption LBS/DRY TON	SDC 45 Throughput		SDC 90 Throughput		SDC 180 Throughput
Type of Sludge	Feed %	Cake %	Polymer Consumption LBS/DRY TON	GPM	LBS/DS/H	GPM	LBS/DS/H	GPM	LBS/DS/H
Aerobically Digested	0.5-2.5	5-6	10-14	60-40	150 - 500	100 - 70	250 - 875	190 - 140	475 - 1750
Anaerobically Digested	2.0-5.0	5-7	6-10	50-35	500 - 875	80 - 60	800 - 1500	140 - 100	1400 - 2500
50%Primary 50% Secondary	1.5-5.0	7-9	6-10	50-40	375 - 1000	80 - 70	600 - 1750	140 - 110	1050 - 2750
Primary	2.5-7.5	8-12	2-8	60-50	750 - 1850	100 - 80	1250 - 3000	180 - 140	2250 - 5250
WAS	0.5-1.5	4-6	8-12	70-60	175 - 450	120 - 90	300 - 675	200 - 170	500 - 1275
Alum Sludge	1.5-2.0	4.5-6.5	8-16	80-60	600 - 600	110 - 85	825 - 850	140 - 110	1050 - 1100

Models

MODEL*	THROUGHPUT (GPM max may vary)	LENGTH	WIDTH	HEIGHT	SDC DRIVE TOTAL HP
SDC45	60	11'-4"	4'-6"	6'-7"	3
SDC90	120	16'-4"	4'-6"	7'-0"	3.5
SDC125	160	16'-4"	5'-7"	7'-10"	3.5
SDC180	240	18'-2"	6'-10"	7'-10"	4
SDC300	360	13'-6"	6'-2"	8'-10"	4

*Model numbers also referred to as RF (i.e. RF-180) in our Install Map.

Features

Advanced Drum Design

Eliminates high maintenance drum support bearings.
Direct driven eliminating easily wearing chain and sprocket design.
Provides the gentlest tumbling of sludge.
Multi-zoned drum design includes initial and main dewatering area. Each zone can be wrapped with different mesh sizes for maximum thickening. Available with polyester filter screens or stainless steel.

Drum Housing

Drum housing eliminates odor emission.

Tapered Spiral Flights

Tapered spiral flights are specially designed to maximize performance and throughput capacity of dewatering drum.

SS Drum Spray Shower

SS Drum Spray Shower with internal brush system and handwheel for self-cleaning. Provides optimal cleaning of the drum screen without rewetting the sludge.

Sliding Access Doors

Sliding access doors for easy viewing during operation.

SS Floc Tank

Provides maximum detention time with hinged access covers.
Ensures proper conditioning of sludge and polymer without shearing.
Axial flow impeller blades provide maximum blending.

Venturi Mixer

Venturi Mixer is designed to thoroughly condition the sludge with polymer to result in the highest degree of flocculation.
Charter Exclusive Polymer Injection Ring injects polymer into sludge stream more effectively & efficiently from competition.

Tangential Sludge Inlet

Tangential Tank Design Inlet to provide minimal turbulence of floc entering the tank.

Benefits

Cost Effective

Minimal installation expense
All our SDC units are direct drive, eliminating costly belt or chain drive.
Economical alternative to a Gravity Belt Thickener.
Low energy and polymer consumption
Low or no wash water consumption

Small Footprint

Requires less space than a GBT.

Distraction-free

No noise, no vibration
Drum housing eliminates odor emission.

Maximum Performance

Reduction of sludge volume by up to 90%
Reduced load on downstream processes
Improved performance and/or reduced size of downstream units

Simplified Operation

Minimal to no operator attention required.
Sliding access doors for easy viewing during operation.
SS Drum Spray Shower with internal brush system and handwheel for self-cleaning.

Design Flexibility

Adaptable to any dewatering system or machinery
Available in all sizes and models

Plug and Play

Total System Responsibility
CMC offers skid mounted systems that can be customized to meet any facility's needs. Our sump/skid systems can include the SDC only or be a complete "plug and play" system combining any combination of sludge feed pump, compressor, booster pump, in-line mixer, polymer system, conveyors, and control panel. See our Skid-Mounted Systems page to discover the perfect combination of size and flexibility.

Applications

MUNICIPAL

WASTEWATER / DRINKING WATER


Municipal Sludge Primary Waste Activated Sludge (WAS) Aerobically Digested Anaerobically Digested Alum	Raw Sewage Return Sludge Secondary Treatment Wastewater Lime Softening Sludge River Water Silt

INDUSTRIAL




Pulp & Paper Wastes Chemical Sludges Coal Refuse Mining Concentrates Printed Circuit Board Sludges Asphalt and cement production Tannery Sludges	Industrial Oil Sludge Drum, Truck and Tanker Wastes Dyes Inks and Pigments Fluoride Sludges Glue Wastes Paint Sludges Wood Treating Oils

AGRICULTURE




Livestock Sludge Milk Sludge Farms, manure, animal waste Grain	Dairy, milk processors Fertilizer Organic Sludges

FOOD & BEVERAGE




Food, fruit, Vegetable processors Potato Processing Soybean Sludge Peanut Butter Corn Syrup Lard	Breweries, beverage producers Dextrose Chocolates Jellies & Condiments Extracts Cheese Production