Sewage treatment plants

Wastewater treatment plants are essential facilities for treating municipal and industrial wastewater to protect the environment, and especially water bodies, from contamination. Current challenges include the introduction of a fourth treatment stage to remove micropollutants such as pharmaceutical residues and industrial chemicals. In Germany, 54 wastewater treatment plants are already equipped with this additional stage, and more are in the planning or construction stages. Furthermore, phosphorus recovery from sewage sludge is gaining importance, as phosphorus is a limited nutrient essential for agriculture. According to the amended Sewage Sludge Ordinance, operators of larger wastewater treatment plants are required to recover phosphorus starting in 2029. These developments promote environmental protection and resource conservation.

Applications in segment:

"Sewage treatment plants"

The sewage sludge is processed into dry sludge in a drying process (< 24 h, 105 °C). A 100 ml sample is taken from this and weighed. The weight must correspond to the specified standard (index).

Precision balances

PFB 1200-2

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In sewage treatment plants, the activated sludge is examined for E. coli bacteria, salmonella and other pathogens. The structures can be precisely visualized using a phase contrast microscope. The result of this study shows whether the diversity of microorganisms allows sewage sludge to be spread on agricultural land. This is necessary to avoid health risks and protect the soil.

Transmitted light microscopes

OBN 159

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The first step in wastewater analysis is to weigh the so-called filterable suspended solids. A precision scale is used for this purpose, which can measure these small weights precisely.

Precision balances

PCB 6000-1

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In order to optimally monitor the operational efficiency of wastewater treatment plants, the solids content in the wastewater must be measured.

Moisture analyser

DBS 60-3

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In the sewage treatment plant laboratory, apprentices use the precision scale to precisely weigh solution components and prepare solutions. For these laboratory processes, it is crucial that work is carried out precisely and that the scale is easy to use. This is essential for quality assurance and customer satisfaction. Thanks to its universal applicability, it helps to ensure that safety standards are met and that the apprentices' training is practical and effective.

Precision balances

PNS 600-3

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Ultrafiltration is used to check the quality of the purification of wastewater. By precisely weighing the retentate, the residual concentration of, for example, salts, sugars, protozoa, bacteria, protein-bound substances can be determined. This makes it clear whether the purification process needs to be repeated.

Precision balances

440-43N

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