Sampling of Waste Waters

Sampling of Waste Waters

Usage and drinking water or waste water go through many physical, chemical and microbiological tests and analyzes. The purpose of these analyzes is to determine the suitability of water for humans, animals and the environment, with criteria suitable for its intended use. Another important point for the realization of these analyzes is the stage of taking the samples.

There are many points to be considered in the collection of wastewater samples. First of all, wastewater samples should be stored in such a way that they do not affect the analyzes to be made. Waste water samples should be taken appropriately and adequately. There are different water sampling methods such as instantaneous sampling and composite sampling.

In general, sampling principles can be listed as follows:

• Sampling patterns and sampling frequency should be determined by the purpose and the source from which the sample was taken.
• When a sample is taken at a certain time and from a certain place, this sample is considered to represent only that place and time.
• In facilities with sudden, special, variable or irregular discharges and processes, composite (mixed) samples representing the period of such discharges should be prepared.
• Composite samples should not be used for the analysis of parameters that change over time in their properties and amounts.
• If some preservatives are to be added during sampling, they are put into the sample container from the very beginning and the composite sample should be prepared in this container.
• For the witness sample, a sample of the same quality as the sample taken should be prepared and delivered to the relevant person sealed.