Filamentous Bacteria As is the case with any group of microorganism populations, the relative proportion or blending of various species is advantageous for a healthy environment. Similarly, in wastewater treatment the blending of microorganisms in ratios specific to the waste stream being treated results in a highly treated effluent. In the case of filaments, trace …
Settleability Test – Interpretation One of the most useful and easy tests for operators to gain insight as to the settling properties of the MLSS in the clarifier is the settleability test. The volume of that the settled occupies provides information as to how well the seThe “free” water above the settled sludge tells the …
Nitrification is the biological oxidation of ammonia nitrogen to nitrate and accounts for most ammonia oxidation. However, carbonaceous bacteria utilize ammonia on the 5 mg/L ammonia for every 100 mg/L of carbon. Sources of ammonia can include; proteins, urea, amino acids, corrosion inhibitors, process chemicals and quaternary ammonia. Ammonia is oxidized by the nitrifying bacteria …
Compliance · Increased and expanding regulations (EPA and state) · Nutrient removal (improved operations typically with more skilled staff) · Chemical and biological methods (chemical methods applicable if adequate biological or physical plant methods don’t exist) Value of water · Scarcity (ever increasing scarcity due to human activity as well as climate change) · Reuse …
Present Issues, Are Operators a Shrinking Resource? Read More »
De-nitrification is when facultative (common) treatment bacteria change nitrate (NO3) to (nitrogen gas (N), carbon dioxide (CO2), water and hydroxide (OH)). As part of this process, facultative bacteria remove oxygen from nitrates and nitrites for breathing, resulting in nitrogen gas being released into the atmosphere, while consuming organics for energy. Contrary to the slowness of …
Effective operation of your system begins with knowing your system. While two systems may be designed and built the same, they remain unique. This uniqueness can likely be accounted for by a number of conditions such as: · The potable water source for the area resulting in different influent waste make up · Various industries …
Knowing Your System, Nitrification as an Indicator? Read More »
Geo Tubes, a more recent technology, are able to treat anything waste or silt that can be pumped under high pressure through a Geo (polypropylene) fabric without blowing up. Some of the applications include: · Municipal Sludge · Industrial Sludge · Construction Silts · Farm Sludge · Fracking Sludge Though these systems can be applied …
Ozone – More Than Just a Disinfectant Water – Disinfection There are a number of commonly accepted methods for disinfecting drinking water to control bacteriological contamination as well as other pollutants affected by oxidation. Some of these methods/technologies, to name a few, include: 1. Chlorination (use of chlorine as the disinfectant) 2. Chloramination (use of …
Bulking sludge, plainly stated, is when the volume occupied by settled sludge in the clarifier is greater than usual and is the result of limited compaction/consolidation of sludge, often times leading to greater solids loss from the clarifier than would otherwise be considered normal. Settling of mixed liquor suspended solids (MLSS), most often referred to …
Background/Reason A seemingly age old problem with more restrictive permitted ammonia concentrations is the by-product in the form nitrates. Presence of nitrates in one of the most problematic locations, the secondary clarifier, often times leads to issues meeting permitted total suspended solids and, where applicable, total nitrogen limits. In the absence of treatment processes to …
