Laboratory tests of return waters are important for:

• Water quality control: To make sure, that the return water meets the established quality standards and is safe for the environment.
• Pollution monitoring: To detect and identify pollutants in return waters and take measures to eliminate them.
• Estimates of the efficiency of treatment facilities: To check, how efficiently the treatment facilities work and whether they need modernization.
• Compliance with legislation: To ensure compliance with the requirements of the legislation on the protection of water resources.

What parameters are determined during laboratory tests of return waters?

During laboratory tests of return water, various physico-chemical and biological parameters are determined, in particular:

• pH: Indicator of acidity or alkalinity of water.
• Suspended substances: The content of solid particles in water.
• Biochemical consumption of oxygen (BSK): Amount of oxygen, necessary for the biological decomposition of organic substances in water.
• Chemical consumption of oxygen (HSK): Amount of oxygen, necessary for chemical oxidation of organic substances in water.
• Ammonium, nitrites, nitrates: The content of nitrogen compounds in water.
• Phosphates: The content of phosphorus compounds in water.
• Heavy metals: The content of heavy metals, such as lead, cadmium, mercury etc.
• Oil products: The content of petroleum products in water.
• Microorganisms: Presence and number of bacteria, viruses and other microorganisms in water.

What methods are used for laboratory tests of return waters?

Various methods are used for laboratory tests of return waters, in particular:

• Colorimetric methods: Methods, based on measuring the color of solutions.
• Titrimetric methods: Methods, засновані на вимірюванні об’єму розчину відомої концентрації, необхідного для реакції з речовиною, що визначається.
• Atomic absorption spectrometry: Метод для визначення вмісту важких металів у воді.
• Gas chromatography: Method for separation and identification of organic substances in water.
• Microbiological methods: Methods for detection and identification of microorganisms in water.

Де можна провести лабораторні випробування зворотних вод?

Лабораторні випробування зворотних вод можна провести в спеціалізованій лабораторії ТОВ «ЛІМІТ ПЛЮС», which has the appropriate equipment, certification and accreditation.

It is important to note:

• The frequency and volume of laboratory tests of return water depends on the requirements of legislation and the characteristics of a specific enterprise or facility.
• The results of laboratory tests of return water are used to assess water quality, pollution monitoring, evaluation of the efficiency of treatment facilities and ensuring compliance with the requirements of the law.

Laboratory tests of return waters – it is a complex process, which includes several stages:

1. Selection of samples:
   • Return water sampling is a critically important stage, because the reliability of the analysis results depends on it.
   • Samples must be taken in accordance with established rules and standards, to ensure their representativeness.
   • It is important to consider the sampling time, since the composition of return water can change during the day.
   • Different types of analysis may require different sample volumes.
2. Transportation and storage of samples:
   • After collection, samples must be delivered to the laboratory as soon as possible.
   • If delivery is not possible within a short time, проби повинні бути належним чином законсервовані та зберігатися за відповідних умов, щоб запобігти зміні їх складу.
3. Підготовка проб до аналізу:
   • Samples may require pretreatment before analysis, such as filtering, dilution or concentration.
   • Some types of analysis require special sample preparation, to ensure their compatibility with the methods used.
4. Analysis:
   • Various analyzes are carried out in the laboratory to determine the physico-chemical and biological parameters of return waters.
   • Each parameter uses its own methods of analysis, which may include colorimetry, titrimetry, atomic absorption spectrometry, gas chromatography, microbiological methods and others.
   • It is important to use modern equipment and follow established procedures, to ensure the accuracy and reliability of the results.
5. Processing and interpretation of results:
   • After the analysis, the obtained results are processed and interpreted.
   • The results are compared with established water quality standards, to assess the degree of contamination of return waters.
   • Based on the obtained results, decisions can be made regarding the need for water purification or improvement of treatment facilities.
6. Drawing up the protocol:
   • Based on the results of laboratory tests, a protocol is drawn up, which contains detailed information about the analyzes performed and the results obtained.
   • The protocol is drawn up in accordance with the established requirements and contains all the necessary data for the interpretation of the results.