Resources
Technical articles on biomass management, molecular diagnostics, and biological wastewater treatment.
Lowering dissolved oxygen (DO) below 2 mg/L in aerobic wastewater treatment can reduce aeration energy costs, but it risks impairing nitrification (ammonia oxidation) and subsequent denitrification (nitrate/nitrite removal), leading to …
Dec 30, 2025Biological wastewater treatment is fundamentally driven by microbial metabolism, where microorganisms transform pollutants into less harmful compounds. The efficiency and sustainability of these processes hinge on the selection and sequence …
Dec 18, 2025Cyanide is one of the most feared contaminants in the industrial world. Known primarily for its extreme toxicity to human and aquatic life, its presence in wastewater presents a significant …
Dec 16, 2025When most people think of a wastewater treatment plant, they picture heavy machinery, massive concrete tanks, and complex piping. But the most important “technology” on-site isn’t made of steel—it’s alive. …
Dec 9, 2025A diverse community of bacteria, archaea, protozoa, and fungi acts as a living, dynamic ecosystem responsible for several critical purification processes: Importance to Operations (Stability and Efficiency) Microbial diversity is …
Dec 1, 2025Biological wastewater treatment is powered by microorganisms. Just like us, these tiny workers need a balanced diet to stay healthy and perform their job—breaking down pollutants. Their diet consists of …
Nov 18, 2025In biological wastewater treatment process efficiency relies on the health and stability of the microbial flocs— aggregates of bacteria, adsorbed organics, and inorganics. When these flocs break apart, a problem …
Nov 6, 2025As wastewater professionals, we’re all familiar with the activated sludge process—the backbone of many treatment plants. But one aspect that often flies under the radar until it causes issues is …
Oct 30, 2025Wastewater treatment plants (WWTPs) are increasingly required to meet stringent inorganic nitrogen discharge limits, necessitating reliable year-round ammonia oxidation and denitrification. Integrating biofilm-based technologies, such as Moving Bed Biofilm Reactors …
Oct 20, 2025Domestic wastewater is a complex mixture of organic and synthetic compounds. Its overall strength is typically assessed using indicators like BOD₅ (Biochemical Oxygen Demand), COD (Chemical Oxygen Demand), and TOC …
Oct 14, 2025We are often asked about the impact of various chemicals on wastewater treatment plants. Over the years, we have compounded a list of the primary industrial chemicals that inhibit the …
Oct 12, 2025As temperatures drop, wastewater treatment plants face a seasonal challenge that’s as subtle as it is critical: maintaining the delicate balance between nitrifying bacteria and filamentous organisms. Winter operations demand …