Waste and sludge treatment
The sludge treatment industry arises from problems linked to the treatment of civil and industrial waste water. The use of abundant water generates a large quantity of waste water which requires special treatment to remove the harmful substances contained in it before it can be recycled back into nature. Purification plants were developed to remove the harmful substances contained in waste water by means of active or activated sludge thereby generating semisolid waste called thickened sludge, which in turn must also be disposed of.
Over the years ongoing research and the use of new technologies have made it possible to dispose of and reuse waste material in many industries such as for example in biogas plants or to recycle it back into nature as fertiliser. Disposal plants, normally huge centralised plants, reduce the moisture content of the sludge through a process of thickening and densification in order to generate a dry material that is easier to store and use.
This industry is the ideal application for progressive cavity pumps because of the nature of the treatment sludge, which has a high percentage of solids content that increases during the various treatment stages, tends to plasticize and has adhesive properties.
Progressive cavity pumps perform best in the various stages involving the transfer of this matter as they ensure effective and reliable performance, which are of vital importance for a waste disposal plant, and higher output levels compared to other pumping systems.
WHY CHOOSE NOVA ROTORS?
Nova Rotors has been operating in the sludge treatment industry for years providing the best possible solutions, a wide range of products, services and expertise to find the most suitable configuration based on the customer’s specific requirements.
The various testimonials received from our customers both in Italy and from around the world over the years attest to the commitment of a dynamic company focussed on meeting the constantly growing market demands.
The pumps conceived and developed directly by Nova Rotors are designed specifically for the treatment of thickened and dewatered sludge with a high solids content of up to 40%, with low or high viscosity and that tend to plasticize, fluid or semi-fluid typical of sludge treatment plants.
The Nova Rotors progressive cavity pumps are developed scrupulously in compliance with the strictest hygiene standards to guarantee high standards of quality, reliability and durability, by providing the best solutions throughout all the plant’s storage and treatment stages. Special attention has been given to the development of the most appropriate construction and arrangement types based on use in order to optimise each and every transfer.
Application (refer to the above diagram):
- DN: pump specifically designed for heavy-duty application, used for pumping from the thickened sludge storage tank to the various dewatering systems
- DHB: hopper pump with double bridge breaker shaft for transferring treated sludge to silos, tanks or vats
- DHS: pump used to transfer treated sludge from the centrifuge or screw press to silos, tanks or vats
- DHS: pump coupled directly to the silo for pumping treated sludge
- DHSB: DHS model pump fitted with “B??? module for transferring sludge from a silo to a dryer or incinerator which is the final stage, that is, the removal of residual moisture, in the sludge treatment plant illustrated above
Products for the sludge treatment industry
APPLICATIONS
- DHS pump: Hopper pump DHS series used after filter press for the recycling of the dried sludge into a collector tank.
- DN pump: DN series used for sludge transfer in a waste water treatment plant.
- DN pump: DN series used for chemical thickened sludge transfer to the centrifuge.
- DN pump: DN series used for transfer of polymer and sludge in a waste water treatment plant.