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The sludge from the sewage treatment plant after sedimentation and concentration needs to be transported to a dewatering machine (centrifugal dewatering, belt dewatering machine, or plate and frame filter press) by a sludge pump (Rod cam rotor pump ), and sludge. The solid content is about 3-4%, and the sludge contains solids, fibers, and sand. Generally, a cutting machine (or a sludge crusher) needs to be installed in front of the sludge pump (Rodder cam rotor pump). At this station Traditionally, single screw pumps have been used in traditional processes, but they are gradually replaced by cam pumps due to factors such as short wear life, high parts costs, and complex maintenance. Rohde cam rotor pumps have on-line maintenance design, wear resistance, cheap accessories, anti-winding, and low product cycle. They are favored by customers.
The sludge pump is equipped with a frequency converter. The flow and pressure of the pump are controlled by the frequency converter. Rohde cam rotor pumps are well qualified for this application.
Application example of sludge feed pump (Sewage treatment plant in Guangdong)
In a pump room of a sewage treatment plant in Guangdong, a Rotary Rotary Cam Pump is used instead of a single screw pump to transport sludge to a centrifugal dehydrator for mechanical dehydration.
The sewage treatment plant originally used a screw pump to transport the sludge. Both the screw pump and the rotor pump are positive displacement pumps, both of which rely on the change in the volume of the pump cavity to achieve continuous medium transfer. However, the subsequent maintenance cost of the screw pump is high, and the price of some consumable parts of the pump is even higher than the cost of the whole pump. The cost of rotor pump accessories only accounts for 10-15% of the whole pump; the compact structure and small footprint also are an important factor for customers to choose Rohde rotor pumps as sludge transfer pumps.
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