
Hydrogeochemical consulting for waterworks and wastewater treatment plants – sampling, analyses and Hydrobia software

Aquajag GmbH
Schwerin (19059) · Head officeNew on Amplifa
About aquajag
Aquajag GmbH was founded in October 2017 as a spin-off from the University of Greifswald (Ernst Moritz Arndt University) and is based in Schwerin. The company specialises in expert consulting and support for water supply and wastewater disposal companies. Its range of services includes the evaluation and assessment of groundwater analysis data, trend analyses in groundwater chemistry, and process engineering recommendations for waterworks, for example on aeration, filtration, deacidification, well cascading and DVGW-compliant calculation of treatment volumes. In addition, aquajag offers sampling of drinking, bathing and wastewater, performs in-situ measurements of pH value, redox potential, conductivity and oxygen, and provides on-call support for drinking water disinfection. At wastewater treatment plants, it carries out microscopic activated sludge examinations, root-cause analyses of operational disruptions, and laboratory tests on the respiration activity of activated sludge. With its self-developed software Hydrobia, a DIN-compliant tool is available for the hydrobiological analysis and assessment of the operating condition of wastewater treatment plants.
- Site
- Schwerin
- Processes
- Evaluation/assessment of groundwater analysis data, Trend analyses in groundwater chemistry, Process engineering recommendations in waterworks (aeration, filtration, deacidification), Hydrobiological analyses of micro-saprobic organisms in flowing water bodies and activated sludge, Microscopic activated sludge examination (microscopic image) with hydrobiological evaluation, Training on performing microscopic activated sludge examinations, Examination of phytoplankton and zooplankton from standing and flowing water bodies, Examination of macrozoobenthos in flowing water bodies, creation of species lists, determination of
- Materials
- Water (drinking water, groundwater, wastewater, bathing water), Hydrobia (software tool), Microscopic activated sludge examination, Filament measurement of activated sludge, Oxygen measurement in aeration tanks
- Certificates
- Regular further training (Nordum Akademie, DVGW, FH-DGGV)
- Founded
- 2017
- Industries
- Water supply, Wastewater disposal, Waterworks, Wastewater treatment plants
- 01
Sampling plan preparation
- 02
Sampling of drinking, bathing and wastewater
- 03
In-situ measurements (pH, redox potential, conductivity, oxygen)
- 04
Hydrogeochemical or hydrobiological evaluation
- 05
Process engineering recommendations or software-based assessment
Analyses and Methods
Hydrobia (software tool)
DIN-compliant tool for the hydrobiological analysis of micro-saprobic organisms and for assessing the operating condition of wastewater treatment plants without chemical analysis.
Microscopic activated sludge examination
Hydrobiological evaluation using the micro-saprobic index to assess the biological activation process.
Filament measurement of activated sludge
Quantitative measurement of filamentous organisms in mg/l fresh mass as an alternative to the multi-stage scale.
Oxygen measurement in aeration tanks
Measurement of oxygen input and calculation of the oxygen yield of the aeration units.
Locations

Schwerin
DEHead office, consulting and analyses
- Materials
- Drinking, groundwater, bathing and wastewater
- Hydrobia software tool
- Microscopy for activated sludge examinations
- In-situ measurement technology
Inside the production




Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Evaluation/assessment of groundwater analysis dataTesting | – | – | – | – | – |
| Trend analyses in groundwater chemistryTesting | – | – | – | – | – |
| Process engineering recommendations in waterworks (aeration, filtration, deacidification)Engineering | – | – | – | – | – |
| Hydrobiological analyses of micro-saprobic organisms in flowing water bodies and activated sludgeTesting | – | – | – | – | – |
| Microscopic activated sludge examination (microscopic image) with hydrobiological evaluationTesting | – | – | – | – | – |
| Training on performing microscopic activated sludge examinationsEngineering | – | – | – | – | – |
| Examination of phytoplankton and zooplankton from standing and flowing water bodiesTesting | – | – | – | – | – |
| Examination of macrozoobenthos in flowing water bodies, creation of species lists, determination ofTesting | – | – | – | – | – |
| Taking water samples (drinking water, bathing water, wastewater)Testing | – | – | – | – | – |
| In-situ measurement of pH value, redox potential, conductivity and oxygenTesting | – | – | – | – | – |
| Hydrogeological and process engineering evaluation of groundwater analysis dataEngineering | – | – | – | – | – |
| Process engineering consulting for drinking water supplyEngineering | – | – | – | – | – |
| On-call service to support the disinfection of drinking water in case of microbiologicalEngineering | – | – | – | – | – |
| Development of sampling plans based on groundwater chemistry and statutory requirementsEngineering | – | – | – | – | – |
| Laboratory tests to determine the respiration activity of activated sludgeTesting | – | – | – | – | – |
| Root-cause analysis of operational disruptions at wastewater treatment plants (bulking sludgeEngineering | – | – | – | – | – |
| Status quo analysis of wastewater treatment plants (utilisation, oxygen supply)Testing | – | – | – | – | – |
| Measurement of oxygen input in aeration tanks and calculation of the oxygen yield of theTesting | – | – | – | – | – |
| Measurement of the filamentous organisms of activated sludge in mg/l fresh massTesting | – | – | – | – | – |
| Mixed water calculations / well cascading taking into account the lime-carbonic acid equilibriumEngineering | – | – | – | – | – |
| Determination of oxygen demand for iron removal, manganese removal and nitrificationEngineering | – | – | – | – | – |
| Testing for iron clogging of individual wells or mixed watersTesting | – | – | – | – | – |
| Testing of the lime-carbonic acid equilibrium before/after treatment and in the drinking waterTesting | – | – | – | – | – |
| Development of recommendations for deacidification measuresEngineering | – | – | – | – | – |
| Testing of the compatibility of water with metallic materials (corrosion behaviour)Testing | – | – | – | – | metallic materials |
| DVGW-compliant calculation of treatment volumes and filter velocities, simulation ofEngineering | – | – | – | – | – |
Additional services
Quality and Further Training
Employees regularly attend further training courses, including on drinking, wastewater and bathing water sampling at the Nordum Akademie as well as at DVGW and FH-DGGV events. Calculations such as treatment volumes and filter velocities are carried out in compliance with DVGW standards.
| Evidence | Schwerin |
|---|---|
| Regular further training (Nordum Akademie, DVGW, FH-DGGV) |
History
- 2017
Founding of Aquajag GmbH in October 2017 as a spin-off from the Ernst Moritz Arndt University of Greifswald, with a founding scholarship from the GSA and funding from the European Social Fund.
- 2017–2019
Payment of the founding scholarship as a subsistence allowance from October 2017 to April 2019.