In recent years, with the acceleration of the modernisation and urbanisation process of the country, the discharge standards of sewage treatment plants in various provinces and cities have been further strengthened, and the deep treatment process of sewage has been gradually implemented in sewage plants all over the world, while the high efficiency sedimentation tank process has a very important practical significance in the deep treatment of sewage.
The high efficiency sedimentation technology is based on the traditional advection sedimentation tank, integrating mixing, sedimentation and concentration processes. Through sludge reflux and chemical dosing, the refluxed sludge forms large flocs with the suspended matter in the water, increasing the density and radius of the particles, thus achieving a treatment effect that is incomparable to conventional sedimentation technology.
The lobe pump 's high wear resistance, non-clogging, easy removal and replacement of the rotor and strong self-priming characteristics not only meet the requirements of the chemical sludge treatment in the high efficiency sedimentation tank of the wastewater plant renovation project, but also meet the requirements of the chemical sludge treatment in the high efficiency sedimentation tank with strong self-priming of 5.5 m. The self-priming capacity does not require an auxiliary device, no priming and filling of the pump is required, and the machine can be put to work when switched on, allowing 25 minutes of separate air evacuation time.
For large particles in the sludge, long flocs do not become clogged and entangled. The reasons for this are: the three-bladed rubber-covered rotor itself is highly wear-resistant; the highly integrated design of the lobe pump allows for a relatively short residence time of the sludge in the pump chamber.
Compared to a screw pump, there is a difference in initial purchase cost, but in terms of the 20-year service life and 30,000 hours of trouble-free operation for which the rotary lobe pump is designed, the full life-cycle cost of use is 40% lower than that of a screw pump.
In conclusion, the use of lobe pumps not only improves the efficiency of sludge treatment in sewage plants, but at the same time, reduces the cost of using the machine and pump throughout its life cycle and, arguably, is the best choice for sludge treatment in sewage plants.