Guides

TitleDateExcerpt
How to optimize polymer dose for belt filter pressesPolymer conditioning is one of the most influential variables in belt filter press performance. A small dosing error can reduce cake solids, increase filtrate…
The economic value of reclaimed water for industrial coolingIndustrial cooling systems consume large volumes of water, particularly at manufacturing facilities, power plants, refineries, food-processing sites, and large…
Coordinating Water Services Across Los Angeles CountyReliable wastewater service in the Los Angeles region depends on cooperation across a complex network of public agencies. County sanitation districts, cities,…
Understanding the Tears And Beer Analogy In Process ControlProcess control can seem abstract when it is reduced to loops, sensors, setpoints, and controller outputs. The “tears and beer” analogy makes those ideas…
Inside the automation workshop: hands-on PLC programming for operatorsModern water resource recovery facilities depend on automation to keep pumps, blowers, valves, chemical systems, and process equipment operating within safe…
How to Manage Dewatered Biosolids Hauling ContractsManaging a dewatered biosolids hauling contract requires more than arranging trucks and approving invoices. A well-run program coordinates treatment-plant…
Predicting Influent Flow And Load Patterns With Machine LearningWastewater influent rarely follows a perfectly predictable schedule. Dry-weather flow, rainfall, industrial discharges, seasonal habits, holidays, water…
Considerations for siting a new water recycling facility in urban LAA new water recycling facility can strengthen Los Angeles’ local water supply, reduce dependence on imported water, and make better use of treated municipal…
The science behind activated sludge floc formationActivated sludge looks like a brown, cloudy mixture, but under a microscope it is a highly organized microbial community. Bacteria, protozoa, filamentous…
Conducting a Chlorine Contact Basin Hydraulic StudyA chlorine contact basin must provide enough effective detention time for disinfection at the plant’s design flow. Its volume alone does not determine…