Analysis Solutions for Wastewater

Cyanide in NPDES Wastewater Samples

A common practice for cyanide extraction in soil and sediment is acid distillation. This approach is valid for all cyanide forms except the double metal cyanide complexes that are most likely to be present. The quality control practice of spiking a soil sample with simple cyanides, or strong metal-cyanide complexes, to validate acid distillation is misleading because these cyanide complexes are readily soluble. Acid distillation of cyanide in soil results in low and irreproducible recoveries for the double metal cyanide complexes most likely to be present. Acid distillation of cyanide in soil is ineffective and does not accurately measure total cyanide, nor does it estimate cyanide toxicity.

Learn more about the extraction and analysis of cyanide in soil and sediment samples

Ensuring Water Quality with Accurate TOC Analysis

The Biological Oxygen Demand (BOD) test measures oxygen consumed by the decomposition of organic matter in secondary wastewater treatment processes. Total Organic Carbon (TOC) analysis provides a direct quantitative measurement of organic contamination in wastewater, whereas BOD tests provide an indirect, empirical estimation of organic contamination.  Read A Comparative Study of Online and Laboratory TOC Analyzers for Analysis of Municipal Wastewater for a more detailed look at substituting TOC analysis for BOD monitoring.


Analysis for Wastewater Applications

With a rising population rate, industrial growth, tighter limits on nutrient pollution and other contaminants, budget cuts, and other factors, wastewater treatment has become increasingly challenging. What was once considered a local concern has grown into a national issue. Wastewater treatment facilities must adhere to stringent discharge standards requiring pollutant removal at very low levels, while environmental and financial sustainability goals require minimizing energy and resource consumption. Facilities with National Pollutant Discharge Elimination System (NPDES) permit must adhere to strict standards for the amount of pollutants they can discharge. OI Analytical’s solutions for Wastewater Treatment and Water Resource Recovery facilities can help you stay in compliance and improve process efficiency while reducing operating and maintenance costs.