Soil and Wastewater Sludge
Contact – Soil
Miriam Fritzsche, M.Sc.
Contact - Sewage Sludge
Dagmar Kempen
Soil Analysis
One of the key questions in site remediation is whether the soil needs to be disposed of or not. The simplest answer is: “it depends.”
For naturally occurring soils, the Federal Soil Protection Ordinance (BBodSchV) applies. After excavation, soil material is analyzed in accordance with the Substitute Building Materials Ordinance (EBV) and, if it meets the specified material values, classified as a substitute building material. It can then be reused in defined technical structures. If reuse is not possible due to exceedance of material values, analysis is carried out in accordance with the Landfill Ordinance (DepV).
We are happy to support you in developing investigation concepts and selecting the appropriate analyses.
Sewage sludge
The solid fraction separated during wastewater treatment is generally referred to as sewage sludge. This primary and/or secondary sludge can either be incinerated or used as fertilizer. The decisive factor for its use is its composition, which is determined in accordance with the Sewage Sludge Ordinance (AbfKlärV) and the Fertilizer Ordinance (DüMV).
A consistent composition of sewage sludge indicates a stable and homogeneous composition of the incoming wastewater and suggests that no unusual external discharges have occurred.
Since the amendment of the AbfKlärV in 2017, an increasing proportion of sewage sludge has been incinerated. However, incineration is also subject to plant-specific requirements that must be met. Therefore, even in the case of thermal utilization, analysis of the sewage sludge in accordance with the requirements of the respective incineration plant is necessary.