While it’s true that two-thirds of the earth’s surface is covered with water, less than 2.5% of it is potable. With increasing population and fast-changing climatic conditions, the need of the hour is the preservation of existing water systems. The role of water treatment plans is crucial. Wastewater management enhances the quality of water, making it suitable for safe consumption. It also helps in the safe release of chemical-laden effluents into the environment. Wastewater treatment plants are installed in industrial areas, commercial zones and even residential complexes. However, the amount of wastewater, the types of impurities present in water varies from one area to another. Hence, there are several types of wastewater pumps that are specifically used to collect wastewater. Here, in this guide from Sintech, you can discover the different types of pumps for water and wastewater treatment. At Sintech, we offer both installation of new wastewater pumps for industries and commercial buildings, as well as replacement parts to ensure that your wastewater pumps continue to function correctly.
2 Common Types of Wastewater PumpsWastewater treatment pumps can be classified into the following three types:
1. Positive Displacement PumpsPositive displacement pumps force out a specific volume of fluid into a discharge pipe. It is available in a variety of configurations like:
Diaphragm PumpsThese pumps make use of hydraulic fluid or air to displace wastewater in a specific direction. The basic operating principle is that – water flows when the diaphragm is open and stops when the diaphragm is closed.
Gear PumpsAs the name implies, gear pumps displace wastewater by turning gears inside the pump. The action of the gears creates a suction that takes in wastewater from one side and moves it to the other side.
Lobe PumpsThese pumps offer superior control over the flow of water. It works by pushing wastewater in a controlled manner and in a single direction. When positive displacement pumps are adequately maintained and serviced regularly, they last for years to come without any downtime.
2. Dynamic Displacement PumpsAt Sintech, besides offering positive wastewater displacement pumps, we also offer dynamic displacement pumps for use in wastewater treatment plants. The significant advantages of this pump category are that it offers the best performance and enhanced reliability. The common types of dynamic displacement pumps include:
Centrifugal PumpsCentrifugal pumps make use of a centrifugal force to build velocity, which in turn, displaces the fluid. Fast-spinning impellers are the main components of centrifugal pumps. Impellers have a similar operation to fans. It has a small intake valve and a large outlet. Some of the reasons why centrifugal pumps are popular for wastewater treatment plants are:
- Low maintenance
- Simple design
- Moving parts that are durable and long-lasting
- Effective operation
- Pressure is self-limited
Specialized PumpsBesides these common types of wastewater pumps, there are other specialized pumps designed for specific needs. They are:
- Circulation Pumps – These pumps keep the slurry circulating throughout the system.
- Agitator Pumps – It generates kinetic energy surrounding the fluid intake.
- Progressive Cavity Pumps – In a progressive cavity pump, storage tanks or pipelines are used for the displacement of fluid from the suction side to the discharge side.