Tech Bulletins

The proper design, operation, and maintenance of biological wastewater treatment and aeration systems is critical to plant performance and operating efficiency. Click to view or download the desired technical bulletins for additional information.

• Proper Specifications for Diffuser Units—proper specifications for diffuser units.
• General Oxygen Requirements for Wastewater Treatment—general oxygen requirements for wastewater treatment.
• Myths About Diffuser Design—myths about diffuser design.
• System Design Air Flow—system design air flow.
• Conversion Chart for Upgrading Systems—conversion chart for upgrading systems with advanced technology diffuser units.
• Economic Analysis of Diffuser Aeration Systems—economic analysis of diffuser aeration systems.
• Retrievable Diffuser Aeration Systems—information on retrievable diffuser aeration systems.
• EDI's Commitment to Quality—EDI's Commitment to Quality.
• Shallow Applications—information on what type of aeration system to use in shallow applications.
• Proper Design Considerations—if you are considering upgrading your system or converting to a new aeration system.
• Converting Ceramic Disc/Dome Media to Flexible Membrane—information on benefits and procedures for converting ceramic media to flexible membranes.
• Evaluating Your Membrane Supplier—areas to evaluate prior to specifying replacement membranes for your diffusers.
• Diffuser Membrane Sizing and Ordering—information on how to determine the proper replacement membrane size for your application.
• Review of On/Off Operation—information on systems with on/off operation.
• Membrane Life Expectancy—information on factors which influence membrane life.
• Diffuser Unit Fouling and Cleaning—information on typical fouling problems of diffuser units and how to clean diffusers.
• Tips for Replacing Units and Membranes—information on replacing units and membranes (proper evaluation, tips to help replacement process.
• Diffuser Membrane Material Selection Guide—information on EPDM, Polyurethane, silicone, Nitrile and neoprene. Information includes general properties indicates materials best suited for specific processes.
• Importance of airflow and air in system design—information on importance of airflow and air on diffuser operation and system performance.
• Design Pressure Considerations for Multi-Stage Centrifugal Blowers—design pressure considerations for multi-stage centrifugal blowers.
• Factors that Influence Air Requirements to Treat Wastewater—factors that influence air requirements to treat wastewater.
• Mixing Requirements for Diffused Air Systems—mixing requirements for diffused air systems.
• Handy Conversion Factors—handy conversion factors use in wastewater treatment design.
• Typical Performance—information on energy consumption and typical performance of various types of aeration equipment.
• Calcium Carbonate Fouling—information on calcium carbonate fouling of fine pore diffusers.
• Technical Support for Your Aeration System—information on technical support for your aeration system. Includes Aeration Design Sheet.
• Information About Fine Bubble Diffuser Systems—information about fine bubble diffuser systems and why they are more efficient.
• Installation and Maintenance Cost Evaluation—information on cost comparisons for Tube, Disc and Panel diffuser products.
• Fine Bubble Aeration—brief technical presentation on when to use fine bubble aeration and tips for optimizing fine bubble performance.
• Coarse Bubble Aeration—brief technical presentation on effective use of coarse bubble aeration.
• Converting Coarse Bubble Aeration to Fine Bubble—information on benefits and techniques for successful conversion of coarse bubble systems to fine bubble.
• Lake and Pond Aeration Techniques—brief technical presentation on lake and pond aeration.
• Aquaculture Applications—brief technical presentation on aquaculture aeration systems.
• Spray Cooling—brief technical presentation on use of Spray Cooling.
• Fixed Grid Systems—information on EDI fixed grid aeration systems and hardware available for concrete or steel basins.
• Floating Diffuser Systems—aerated lagoons, high rate systems, floating diffuser systems for water and wastewater and other solutions.
• Can more than one unit type be used in the same system?—information on frequently asked questions such as mixing various types of units in an aeration system.
• Membrane Element Structural Analysis—information on membrane stress calculations for Tube, Disc and Panel diffuser products.