Tag Archives: wastewater aeration

Overview: The State Commission of Public Services of Mexicali (CESPM) is a Decentralized Public Organization of the State Government of Baja California in Mexico. CESPM oversees the planning, construction, operation, and maintenance of the potable and wastewater infrastructure in the Mexicali municipality. The Zaragoza Wastewater Treatment Plant is the CESPM’s largest plant with a design […]

Aeration System Upgrade Increases Flow Capacity and Reclaimed Water Availability Overview: In 2012, the Middlebury, Indiana, USA Wastewater Treatment Plant (WWTP) was faced with aging brush rotors and higher loads in their oxidation ditch system. When Mick Reese was hired as Plant Superintendent, the upgrade design was about 90% complete. The full system upgrade included […]

The Dubai Investments Park Wastewater Treatment plant in the United Arab Emirates faced challenges in their oxidation ditch due to filamentous sludge bulking, resulting in poor sludge settling in the secondary clarifier. Supplemental aeration was needed to eliminate the filamentous sludge bulking. Challenge: The oxidation ditch is treating an average of 2.64 MGD (10,000 m3/day) […]

  Overview: A California (USA) vineyard was faced with the challenge of meeting wastewater treatment compliance under a tight deadline defined by local regulators, while receiving ongoing odor complaints from the community. Challenges: Extended periods of mismanagement from previous owners left the facility and the wastewater treatment system in disarray. Equipment with poor mixing capabilities and […]