Diesel Engine-Driven Self-Priming Pumps: All You Need to Know

Managing wastewater effectively is a significant challenge for municipalities, industries, and agricultural operations. Issues like blockages, varying fluid compositions, and the need for continuous operation demand robust and efficient solutions. Submersible wastewater and sewer pumps are essential in addressing these challenges, providing reliable performance in submerged conditions.

Choosing the right pump is crucial, as it ensures optimal efficiency, reduces maintenance costs, and prevents system failures. EDDY Pump designs and manufactures high-quality submersible effluent pumps that can handle the most demanding environments. With advanced technology and superior engineering, EDDY Pump offers solutions that excel in durability and performance, making them an ideal choice for any waste water management system. This comprehensive guide will delve into the features, applications, and benefits of submersible wastewater high head pumps, helping you make informed decisions for your needs.

What is a Submersible Wastewater Pump?

Definition and Basic Operation

Submersible sludge pumps are designed to operate while fully submerged in the liquid they are tasked with moving. These pumps are typically used for pumping sewage, waste water, and other fluids containing solids. The submersible design ensures the pump remains cool and operates quietly, making it ideal for residential and commercial applications. The essential operation involves submerging the pump in the waste water, where an electric motor drives an impeller. The impeller generates centrifugal force, pushing the liquid through the pump and a discharge pipe. Submersible sewage pumps are engineered to handle various types of fluids, including those with high solid content, making them essential in modern commercial and domestic wastewater management systems.

Comparison with Other Pump Technologies

Compared to other pump technologies, submersible sump pumps offer several advantages. Unlike centrifugal pumps, which are typically installed above the liquid level and require priming, submersible pumps are submerged directly in the liquid, eliminating the need for priming and reducing the risk of cavitation. This makes the pumps more efficient and reliable for continuous operation in challenging environments.

Submersible industrial pumps have the advantage of reduced noise levels and better cooling compared to non-submersible solids handling pumps. The liquid around the pump absorbs the heat generated by the motor. Additionally, these pumps are generally more compact and require less infrastructure, making installation and maintenance more accessible and less expensive.

Key Features of Submersible Wastewater Pumps

High Durability and Efficiency

A submersible pump is designed for high durability and efficiency, making it ideal for demanding applications. These pumps are constructed with robust materials such as cast iron, stainless steel, and high-chrome alloys, ensuring longevity, corrosion resistance, and wear resistance. This durability is crucial for maintaining reliable operation in harsh environments where the pump is exposed to abrasive and corrosive substances.

Efficiency is another standout feature of submersible waste water pumps. Their design allows them to operate while fully submerged, enhancing cooling and reducing the risk of overheating. This results in longer motor life and less downtime for maintenance. Additionally, the direct contact with the fluid minimizes energy losses associated with suction lift, making submersible sump pumps more energy-efficient than other pumps.

Advantages of Submersible Designs in Harsh Environments

Submersible designs offer significant advantages in harsh environments. One of the main benefits is the ability to handle solids and debris without clogging. Solids handling pumps, an industrial submersible pump, are specifically engineered to manage fluids with high solid content, making them ideal for waste water applications involving sludge, effluent, sewage, and other particulate-laden liquids.

The submersible design protects the pump’s components in harsh environments. Being fully submerged in the fluid helps to dissipate heat generated by the motor, preventing overheating and ensuring continuous operation. This is particularly beneficial in industrial settings where pumps must run for extended periods under demanding conditions.

Moreover, submersible sewage pumps are less prone to issues like air locking and cavitation, which are common problems in non-submersible ones. The submerged operation also means that these pumps operate more quietly, reducing noise pollution and making them suitable for residential, urban, and industrial sites.

Types of Submersible Wastewater Pumps

  • Submersible Solids Handling Pump

A submersible solids handling pump is explicitly designed to manage fluids containing high solids levels, such as sewage, sludge, and slurry. These pumps feature robust impeller capable of handling large particles without clogging. The impeller is often made from durable materials like cast iron or stainless steel to withstand abrasive conditions. Solids handling pumps are essential in municipal wastewater removal plants, industrial facilities, and construction sites where the removal of solid-laden fluids is necessary. Their design ensures reliable operation even in challenging environments, reducing downtime and maintenance costs.

  • Industrial Submersible Pump

These pumps are versatile for various industries, including mining, construction, and manufacturing. These pumps are built to handle a wide range of liquids, from clean water to corrosive and abrasive substances. They are constructed from high-strength materials to ensure durability and long service life in demanding industrial settings. Industrial submersible pumps are constructed for high efficiency, with features such as energy-efficient motors and advanced sealing mechanisms to prevent leaks and contamination. These sump pumps can operate continuously under harsh conditions, making them ideal for applications that require reliable and efficient fluid management.

  • Submersible Sewer Pump

Submersible sewer pumps are specialized pumps designed to move sewage and other waste water from residential, commercial, and municipal sewer systems. These pumps are typically installed in lift stations or sump pits and are engineered to handle raw sewage, including effluent, solid waste and fibrous materials. Submersible sewer pumps often have features like vortex impeller or grinder mechanisms to break down solids and prevent clogging. The pumps are constructed from corrosion-resistant materials to withstand the harsh conditions found in sewage systems. They are critical in maintaining waste water flow to treatment plants, ensuring public health and environmental safety.

Industrial Applications of Submersible Wastewater Pumps

  • Municipal Wastewater Treatment

Municipal waste water removal plants are essential for maintaining public health and environmental safety by processing sewage and domestic waste water from residential and commercial buildings. Submersible sewage pumps are integral to these facilities, where they are used to move raw sewage and waste water through various stages of treatment. These pumps are often installed in lift stations to elevate waste water to higher elevations for gravity-fed processes. Submersible sewer pumps are designed to handle raw sewage, including solids and fibrous materials, without clogging, ensuring continuous and efficient operation. Their robust construction and ability to operate entirely submerged make them ideal for the demanding conditions found in municipal waste water systems.

  • Industrial Waste Management

In industrial settings, managing waste efficiently is crucial to maintaining operational efficiency and compliance with environmental regulations. Industrial submersible pumps are used to handle a variety of waste fluids, including those that contain chemicals, solids, stringy materials, and other hazardous materials from septic tanks. These heavy duty dewatering pumps are designed to withstand harsh conditions, effluent, and corrosive substances, ensuring long-term reliability and minimal downtime. Industries such as mining, chemical manufacturing, and food processing rely on these industrial pumps to effectively manage their waste water and effluents. The versatility and durability of these dewatering pumps make them suitable for a wide range of industrial applications, ensuring that waste is transported safely and efficiently to treatment facilities or disposal sites.

  • Emergency Flood Water Management

Submersible wastewater high head pumps play a critical role in emergency floodwater management, helping to mitigate the impact of flooding on communities and infrastructure. During heavy rains or natural disasters, these dewatering pumps are deployed water transfer applications or quickly remove excess water from flooded areas, preventing damage and aiding recovery efforts. Industrial submersible pumps are handy in these situations due to their high water transfer capacity and ability to handle debris-laden water. Their portability and easy installation options allow for rapid deployment in emergency scenarios. By efficiently pumping out floodwaters, submersible sewage pumps help protect properties, reduce business downtime, and ensure the safety and well-being of affected populations.

Selection Criteria for Submersible Wastewater Pumps

  • Capacity and Power Considerations

When selecting a waste water pump, one of the primary factors is the pump’s capacity and power. Capacity refers to the volume of waste water in the septic tank that the pump can handle, typically measured in gallons per minute (GPM) or liters per second (L/s). The required capacity will depend on the specific application and the volume of waste water to be managed. Power considerations include the pump motor’s horsepower (HP) or kilowatts (kW), which determines the pump’s ability to move waste water efficiently over various distances and elevations. Choosing submersible sewage pumps with sufficient power to handle the expected load while maintaining energy efficiency is essential. Matching the pump’s capacity and power to the application’s needs ensures optimal performance and longevity.

  • Solids Handling Capabilities

Another crucial criterion is the pump’s ability to handle solids. In many wastewater effluent applications, the fluid or septic tank contains solids, debris, and other particulates that can cause clogging or damage to the pump. A solids-handling sump pump is designed with a non-clogging vortex impeller to manage these materials without compromising performance. Key features to look for include the size of the solids the pump can pass (usually specified in millimeters or inches) and the type of impeller used. Vortex or channel impeller is commonly used in solids handling pumps because they minimize clogging and can handle larger solids. Ensuring the heavy duty pump has adequate solids handling capabilities is vital for maintaining continuous and efficient operation, especially in environments with high solid content.

  • Material and Build Quality

A submersible wastewater pump’s material and build quality directly impact its durability and resistance to corrosion and wear. Effluent pumps in harsh environments or with corrosive fluids must be constructed from robust materials such as stainless steel, cast iron, or high-chrome alloys. These materials provide excellent resistance to chemical corrosion and physical abrasion, extending the pump’s lifespan and reducing maintenance costs. Additionally, the build quality, including seals, bearings, and motor insulation, should be of high standards to ensure reliable operation under submerged conditions. Investing in a pump with superior material and build quality ensures long-term performance and reliability, even in the most challenging wastewater management scenarios.

Maintenance and Troubleshooting for Submersible Wastewater Pumps

Routine Maintenance Tips for Effluent Pumps

Regular maintenance ensures submersible sewage pumps’ longevity and optimal performance. Here are some critical routine maintenance tips:

  • Visual Inspection: Regularly inspect the sump pump and its components for signs of wear, corrosion, or damage. Check the power cables for any cracks or fraying.

  • Clean the Pump and Impeller: Periodically remove the pump from the sump or pit to clean debris or buildup from the vortex impeller and pump housing. This is especially important for solids handling pumps with high solid content.

  • Check Seals and Gaskets: Inspect seals and gaskets for signs of wear or leakage. Replace them if necessary to prevent water ingress and adequately protect the motor.

  • Lubricate Bearings: If the pump model requires it, lubricate the bearings according to the manufacturer’s recommendations. Proper lubrication reduces friction and wear, extending the pump’s life.

  • Monitor Performance: Monitor the pump’s performance metrics, such as flow rate and power consumption. Any significant changes indicate an issue that needs addressing.

  • Test the Float Switch: Ensure the float switch, which controls the pump’s operation based on water levels, functions correctly. Clean it regularly to prevent malfunction due to debris accumulation.

Common Issues and How to Troubleshoot Them

Despite regular maintenance, submersible sump pumps may encounter issues. Here are some common problems and troubleshooting steps:

Pump Not Starting:

  • Check Power Supply: Ensure the sump pump is connected to a reliable power source and the circuit breaker hasn’t tripped.

  • Inspect the Float Switch: If the float switch is stuck or faulty, the pump may not start. Clean or replace the float switch as needed.

  • Examine the Motor: A burnt-out motor may need professional repair or replacement.

Pump Running Continuously:

  • Float Switch Issues: The float switch might be stuck in the “on” position. Clean or adjust the float switch.

  • Blocked Discharge Pipe: Check the discharge pipe for obstructions that might prevent the pump from emptying the sump, causing it to run continuously.

Reduced Pump Performance:

  • Clogged Impeller: Debris or solids can clog the impeller, reducing performance. Clean the impeller and pump housing.

  • Worn Impeller: Over time, the impeller may wear out and need replacement to restore performance.

  • Air Lock: Ensure no air is trapped in the pump’s inlet or discharge line, as this can reduce efficiency.

Excessive Noise or Vibration:

  • Loose Components: Check for and tighten any loose components.

  • Damaged Bearings: Worn or damaged bearings can cause noise and vibration. Lubricate or replace them as needed.

  • Cavitation: Cavitation occurs when air bubbles form and collapse within the pump, causing noise and damage. Ensure the pump is fully submerged and not drawing in air.

Leaking Pump:

  • Seal Issues: Inspect and replace worn or damaged seals and gaskets to prevent leaks.

  • Cracked Housing: If the pump housing is broken, it may need to be replaced to prevent leaks and maintain proper function.


Case Studies for Submersible Wastewater Pumps

Case Study 1: Municipal Wastewater Treatment Plant

  • Background: A large municipal wastewater treatment plant struggled with grey water and frequent clogging in their existing pumps. The facility needed a reliable solution to handle the high solid content in the waste water.

  • Solution: EDDY Pump provided submersible waste water effluent pumps designed with advanced solids handling capabilities and effluent pumping applications. These heavy duty pumps featured a non-clogging vortex impeller that efficiently managed larger solids and grey water.

  • Results: After the installation of EDDY Pump’s submersible sludge pumps, the plant experienced a significant reduction in downtime and maintenance costs. The pumps’ robust design, vortex impeller, and superior solids handling capabilities ensured continuous operation, enhancing the overall efficiency of the wastewater treatment process.

Case Study 2: Industrial Waste Management at a Manufacturing Facility

  • Background: A manufacturing facility handling chemical waste and heavy sludge needed a durable and efficient solution to manage its industrial waste. The existing pumps could not withstand the harsh conditions, leading to frequent breakdowns.

  • Solution: We supplied submersible industrial pumps constructed with high-chrome alloys, cast iron, and corrosion-resistant materials. These heavy duty pumps were designed to handle abrasive and corrosive fluids typical in industrial waste.

  • Results: Implementing EDDY Pump’s industrial pumps drastically improved waste management efficiency. Thanks to the pumps’ high durability and resistance to wear, the facility reported fewer breakdowns and reduced maintenance requirements. This led to increased operational uptime and cost savings.

Case Study 3: Emergency Flood Water Management in Urban Areas

  • Background: A city in a flood-prone area faced challenges with rapid water removal during heavy rainfall and flooding. The existing pumps needed to be improved to handle the volume and speed required to prevent urban flooding.

  • Solution: We provided submersible sewer pumps capable of handling high-volume water removal and solids. These heavy duty pumps were strategically installed in key flood zones to manage excess water efficiently.

  • Results: The submersible sewer pumps from EDDY Pump successfully mitigated the impact of heavy rains and flooding in the urban area. The grinder pumps operated continuously during peak flood events, effectively removing water and preventing significant damage to properties and infrastructure. The city reported a substantial decrease in flood-related incidents and property damage, highlighting the effectiveness of EDDY Pump’s solutions in emergencies.

Case Study 4: Sewage Management in a Residential Complex

  • Background: A large residential complex was experiencing frequent issues with its sewage applications, including backups and overflows, due to inefficient pumping solutions.

  • Solution: EDDY Pump installed heavy duty submersible sewer pumps specifically designed for residential sewage systems. These heavy duty pumps had grinder mechanisms to handle fibrous materials and prevent clogging.

  • Results: The new submersible sewer pumps significantly improved the residential complex’s sewage management system. There were no more backups or overflows, and the maintenance team reported easier handling and reduced cleaning efforts. The residents benefited from a more reliable and hygienic sewage system, improving their overall quality of life.

Future Trends in Submersible Pump Technology

Innovations on the Horizon

  • Smart Pump Technology
    One of the most significant trends in submersible pump technology is the integration of intelligent technologies. These include sensors and IoT (Internet of Things) connectivity, which allow for real-time monitoring and remote control of submersible sludge pumps. Intelligent heavy duty pumps can provide data on performance metrics, detect potential issues before they become critical, and optimize operations to reduce energy consumption. These innovations are particularly beneficial for industrial submersible and sewer pumps, where continuous and reliable operation is essential.

  • Advanced Materials and Coatings
    Another area of innovation is the use of advanced materials and coatings. Manufacturers are developing new alloys and composite materials that offer enhanced durability and resistance to corrosion and wear. These materials are essential for solids handling pumps used in harsh environments. Additionally, anti-fouling coatings are being developed to prevent biological growth and reduce maintenance requirements, further increasing the efficiency and lifespan of submersible sewage pumps.

  • Improved Impeller Designs
    Impeller design is critical to the performance of submersible pumps. Future trends include the development of more efficient and clog-resistant impeller design, such as non-clog and vortex impeller. These designs are essential for solids handling pumps, improving the pump’s ability to handle large and fibrous solids without clogging. Enhanced impeller designs improve reliability and efficiency, reducing downtime and maintenance costs.

  • Energy-Efficient Motors
    Energy efficiency is a critical focus in pump technology advancements. New motor designs are being developed to reduce energy consumption and increase performance. High-efficiency motors and variable frequency drives (VFDs) allow for better control over pump operation, optimizing energy use and reducing operational costs. These energy-efficient solutions are crucial for industrial and submersible sewer pumps, where large volumes of waste water must be managed continuously.


Sustainable Practices in Pump Manufacturing

    • Eco-Friendly Materials and Processes
      Sustainability is becoming increasingly crucial in pump manufacturing. Companies are adopting eco-friendly materials and manufacturing processes to reduce their environmental impact. This includes using recycled materials and developing easier-to-recycle pumps at the end of their lifecycle. Sustainable practices help the environment and appeal to customers who prioritize green technologies.

    • Reduced Carbon Footprint
      Manufacturers are focusing on reducing their products’ carbon footprint. This involves improving the energy efficiency of pumps and reducing the emissions associated with their production and operation. Motor technology, materials, and design advances contribute to more sustainable submersible sump pumps. These improvements align with global efforts to combat climate change and promote sustainable industrial practices.

    • Extended Product Lifespan
      Sustainability also involves extending the lifespan of products. Submersible pumps are being designed for longer life and easier maintenance, reducing the need for frequent replacements and the associated environmental impact. By focusing on durability and reliability, manufacturers can offer pumps that serve their purpose for many years with minimal environmental cost.

    • Water Conservation Technologies
      Innovations in submersible pump technology also contribute to water conservation. Efficient pumps reduce water waste and improve the management of water resources. This is particularly important in wastewater treatment and flood management applications, where effective water handling is crucial. Manufacturers are helping to conserve one of the planet’s most valuable resources by enhancing the efficiency of submersible sludge pumps.


    Submersible sump pumps are essential for effectively managing waste water in various applications, from municipal treatment plants to industrial waste management and emergency flood control service. By understanding the key features, types, and selection criteria, you can ensure optimal performance and reliability in your operations. EDDY Pump stands out as a leader in this field, offering advanced technology and superior engineering in their submersible sump pumps, solids handling pumps, submersible industrial pumps, and sewer pumps. 

    Our commitment to durability, efficiency, and innovation ensures that EDDY Pump’s products can handle the most demanding environments, providing reliable and cost-effective solutions for your waste water management needs. As the industry evolves, EDDY Pump remains at the forefront, embracing new technologies and sustainable practices to meet future challenges. Choose EDDY Pump for your waste water management solutions and experience the difference in quality and performance.