For more information, please visit our website.
Handex&#;s comprehensive suite of sludge dewatering technologies allows us to reduce volumes of liquid /solid mixtures by up to 80% resulting in reduced transportation and disposal costs, along with compliance with the regulatory requirements. Dewatering options HCR provides include High & Low Pressure Plate and Frame as well as Belt filter pressing, Centrifuge processing, and Geomembrane solutions.
Handex&#;s treatability testing develops information on a pilot scale for selection of the best dewatering option for a specific application and lowest cost that meet our clients&#; objectives and regulatory requirements. Pilot scale studies along with our extensive experience and key personnel help design the most optimal treatment scenario for varying conditions and materials.
What are My Dewatering Options?
There are various technologies for sludge dewatering available for different applications. HCR provides treatability testing of sludge to achieve the optimum process choice while providing the most cost-effective solution for our clients.
- Plate & Frame Filter Press - Plate and Frame Filter Presses produce filter cakes that are between 40-70% solids by weight. This type of processing is generally used on sludge where the highest volume reduction is desired.
- Belt Press - The Belt Press is most commonly used when high-moisture content is acceptable. It produces a filter cake that is between 18-25% solids by weight. Typical applications include Digester Sludge, Paper Mill Sludge and Biological Sludge.
- Centrifuge Processing - Centrifuge processing produces 25-40% solids by weight. Centrifuges have a variety of applications along with many options for sizing for volume. They also offer a smaller footprint than other technologies.
- Geomembrane Solutions - Geomembranes are generally used for applications where a high volume of water and low volume of solids need to be effectively dewatered. This technology is used for water filtration plant residuals, wastewater residuals, settling pond residuals and other similar applications.
About Handex
Handex is a provider of Pumping, Dredging, Sludge Dewatering and Treatment of industrial process wastes and sediments. Our staff includes experienced Project Managers, Operators, Technicians, Fabricators, Mechanics and Health and Safety Professionals. Our objective is to meet and exceed client expectations while providing safe, cost-effective service.
If you want to learn more, please visit our website BRIGHT.
Centrifuge
Centrifuges operate under the principle of buoyancy. They use high rotational speeds&#;i.e., they spin&#;to separate components by density. Components with higher densities (e.g., sludge solids) fall to the bottom, while components with lower densities (e.g., sludge liquids) rise to the top.
The primary benefit of centrifugal dewatering operations is processing speed. They quickly produce between 25% and 35% solids by weight. They are generally used in dewatering applications where the main priority is the recovery oil rather than the quality of the solids. However, they do come with their share of faults. Centrifuges are high energy, not easy to operate on/off, and are difficult to maintain.
Plate and Frame Filter Press
Plate and frame filter presses separate liquids from solids using recessed-chamber filter plates. The filter plates combine to form a chamber, which pressurizes the sludge. The liquids are squeezed through the filter cloth that lines the chamber while the solids remain on the surface of the filter cloth. The entire process takes 4 hours for each batch.
The main benefits are that the solids are formed as stackable cakes, which makes them cost-effective to transport and the equipment does not require any special license to operate.
Belt Filter Press
Belt filter presses follow a four-stage dewatering process. The four stages are: 1) pretreatment, 2) gravity dewatering, 3) pre-pressure dewatering in the wedge zone, and 4) press dewatering.
The key benefit of belt filter press dewatering operations is high volume capacity. The continual action of the dewatering process is highly effective for processing high volumes of sludge. However, the quality of the filter cake is lower than that of filter cake produced by other methods (between 11% to 20% solids by weight).
For more information, please visit filter press for sludge dewatering.