Wastewater Treatment Case Studies and White Papers

  1. White Paper: High-Efficiency Reverse Osmosis Treats Gray Water For Power Generation

    Recycling of gray wastewater as boiler make- up water was the challenge where silica value was typically 85 ppm in this secondary treated wastewater. This paper describes a new design called the High-Efficiency Reverse Osmosis selected for that task, discusses the project technical considerations and highlights the actual performance of the system.

  2. Case Study: Durability For A Dollar

    Hopkins, Minnesota occupies four square miles of space in southcentral Minnesota, and is home to 17,000 residents. The area is also home to seven lift stations, which pump water and wastewater in various parts of the city – all of which operate with different manufacturer’s equipment. By The Gorman-Rupp Company

  3. Envirex® Energy Efficient Activated Sludge Process Meets Stringent Regulations While Minimizing Costs

    The Town of Elkton, Maryland, located in Cecil County near the head of the Chesapeake Bay, has a population of approximately 15,000 and an average elevation of 9.1 m (30 ft). Elkton is an economically strong, stable community that is very conscientious about environmental issues. In an effort to protect the Chesapeake Bay aquatic life, new stringent wastewater effluent regulations were implemented requiring very low nutrient levels in wastewater treatment plant discharge.

  4. Keeping The Operator In Focus: The Four Pillars Of Operator Effectiveness

    This paper shows how the four pillars of operator effectiveness lead operators to greater awareness, faster response and better decisions.

  5. ORP Sensors – Are They Really The Best Thing “Since Sliced Bread”?

    There have been many publications lately that claim universal appeal of the ORP sensors and their applicability across the board. This concerns me, because the authors sometimes forget to mention some well-known practical limitations of the method, let alone the realities of water treatment applications potentially influencing the sensor performance.

  6. Coming Clean With The Environment

    With population and energy costs rising, Long Island wastewater treatment plants figured out a cost-effective way to control pollution and conserve resources. By Jon Richens, senior process engineer, WesTech Engineering

  7. Potato Chips In Peru? Headworks Solves A Multinational Food & Beverage Company's Space And Effluent Quality Challenges

    Although industry only accounts for 20% of water consumption globally (vs. 70% for agriculture and 10% for domestic consumption), most multinational industrial companies are now focused on ensuring they provide effective environmental management wherever they are in the world.  

  8. The 3 Main Reasons To Use Carbon Dioxide For pH Control

    Finding ways to improve everyday processes in more efficient and productive ways is an important goal for most companies. Many water and wastewater treatment facilities use sulfuric acid when pH reduction is needed, but face safety and process risks as a result. As an alternative to sulfuric acid, carbon dioxide (CO2) offers several benefits. 

  9. Picking The Perfect Pump

    Pumps and pumping systems are like unsung heroes of modern society – quickly and quietly transporting vital water supplies, chemicals and waste to and from locations, which rely upon their consistent, reliable operation.

  10. Case Study: Lift Station Pump Sealing
    Lift stations or pumping stations supply wastewater to treatment plants. They are remote from the plant and are critical to the operation that many redundancies are built into each lift station to ensure they remain in operation, 24 hours a day, 365 days a year. These stations must be extremely reliable because the gravity flow coming into the lift station cannot be turned off.