Environmental Services | Relco Pacific

By: Relco Pacific  05-Apr-2012

Sludge Handling and Drying

The GMF-Gouda Paddle dryer can be used for dewatering sludge (of various types) in waste water treatment plants. Many wastewater treatment plants are coping with a waste stream of digested sludge. The sludge is normally dewatered by means of a centrifuge or belt filter press. After dewatering the sludge has a typical dry solids content of approx. 20 - 25%, which is very suitable for thermal treatment in a GMF-Gouda paddle dryer.

The heart of the installation consists of a trough containing two counter rotating shafts, arrayed with paddles. Thermal oil or saturated steam of 180 - 250 oC flows continuously through the jacket, hollow shafts and paddles. As the sludge feeds in, the wedge-shaped paddles ensure perfect local mixing and mechanical fluidisation. The shafts are precisely aligned, and thus enable the paddles to interweave as they turn. This ensures the ideal surface to product contact and sludge flow, leading to high evaporation rates per square meter inside the machine.

Shaftless Screw Conveyors

The unique features of the SPIRAC Shaftless Conveying Systems present new possibilities when designing materials handling systems.

A system of SPIRAC horizontal, inclined and vertical shaftless conveyors with no intermediate or end bearings, low rpm’s and low power usage is a space-saving, extremely reliable conveying option.

Maintenance is significantly reduced when compared to traditional conveying methods. The elimination of a central shaft allows a much higher fill rate resulting in lower rpm’s; more efficient conveying and consequently less wear and power usage.

Shaftless spiral

The shaftless spiral allows higher filling rates and lower rpm’s resulting in less wear and consequently less maintenance and down time. Although the spirals can be made of many different materials, the primary material is HTMAS (High Tensile Mircoalloyed Steel) - a special steel from Sweden with mechanical properties that result in the SPIRAC spiral having a very high tensile strength.

No intermediate or end bearings

Eliminating intermediate and end bearings reduces major maintenance work. It also allows efficient and direct transfer into another conveyor – horizontal, inclined or vertical.

Liners

SPIRAC’s proprietary liner, DURAFLO SPX, has been designed specifically to ensure low wear and long life. A combination of material thickness and formulation gives Duraflo SPX its unique wearing characteristics. DURAFLO SPX has been developed over many years and is one of the key features which ensures that SPIRAC conveyors are industry leading. The DURAFLO SPX liner also has a built-in wear indicator with a snap-in, snap-out feature enabling easy replacement.

Totally enclosed troughs

SPIRAC conveyors are totally enclosed. There is no spillage of the material being conveyed and odours are completely contained.

Direct drive

SPIRAC’s direct-drive design allows a clean and efficient transmission without the maintenance required with belt and chain drives.

Screening and Classifying Equipment

SPIRAC is a world leader in providing specialised conveying equipment to a diverse range of industries. Unrivalled technical expertise and a strong commitment to manufacturing quality have enabled SPIRAC to stay at the forefront of shaftless conveying technology for more than 30 years.

SPIRAC’s screening and classifying equipment brings together their unique shaftless screw technology and superior screen design to create systemised solutions that are streamlined and robust.

Silos and Storage Systems

The unique features of SPIRAC Silos and Storage systems present new possibilities when designing Materials Handling Systems.

All SPIRAC Silos and Storage Systems utilise shaftless spirals to provide cost effective and reliable designs. Conveyors can be horizontal, inclined or vertical with no intermediate or end bearings. Low rpm’s and low power usage result in these space saving designs.

Compactors and De-Waterers

SPIRAC is a leading global supplier of purpose-built compacting and dewatering systems. Over the past 20 years the Company has earned a reputation for quality products, high levels of service and reliability, and the clever design of innovative solutions for niche markets.

SPIRAC’s compactors and dewaterers are designed to offer simple yet effective, low-maintenance and high-volume dewatering and compacting options.

» VIRTUALLY MAINTENANCE FREE

» LOW POWER USAGE

» LESS DOWN TIME

» COST SAVINGS

» LESS WEAR

» SPACE SAVING

 The unique features of SPIRAC compactors and dewaterers present new possibilities when designing materials handling systems.

With no intermediate or end bearings, low rpm’s and low power usage is a space-saving, extremely reliable option. Maintenance is significantly reduced when compared to traditional compacting methods. The elimination of a central shaft allows a much higher fill rate resulting in lower rpm’s; more efficient conveying and consequently less wear and power usage.


Other products and services from Relco Pacific

05-Apr-2012

Consulting Services | Relco Pacific

RELCO Pacific can undertake an audit of any potential raw material supplier to the new venture to determine the products suitability for processing and to advice on any changes that are required to the suppliers system to meet the requirements for the new plant.