When experience meets creativity - We develop optimum solutions for waste water treatment and energy production
The costs for sludge disposal can be up to 35 % of the overall costs of the WWTP.
These costs are mainly dependent on the efficiency of dewatering, which is influenced by all previous treatment processes and the type of selected form of disposal.
H2Office evaluates the entire wastewater and sludge treatment system in order to reduce the volume of biosolids. We have experience in design and operation of plants for composting or soilification.
On the way to energy self-sufficiency, the usage of biogas for electricity and heat production is one of the most important steps.
Biogas is produced by anaerobic treatment on sludge & organic waste (co-fermentation). In combination with efficient energy usage, the goal of energy self-sufficiency can be achieved.
To simulate energy production and energy self-sufficiency over time, we have developed a special tool "CHP-sim". The simulation parameters are especially adaptable for every WWTP and biogas plant. The model considers changing operating conditions, like the installation of new CHPs in different combinations, addition of co-substrate as well as different control strategies for the heating system. The tool also helps to find the optimum configuration of the CHP plant and it is our basis for a relieable cost-benefit analysis.
Once we have found the technically and economically optimum configuration, we perform detailed engineering, prepare the tender documents for the mechanical and electrical equipment and supervise the implementation.
WWTPs have shifted from being a "black-box" to a system of well understood processes. Investigation and research revealed more and more of the chemical and biological processes going on in WWTPs and accurate mathematical models have been developed.
H2Office uses dynamic simulations in order
- to revise and supplement conventional plant design,
- to evaluating different design concepts and operating modes and
- to optimize highly dynamic processes like aeration systems or biogas production due to co-digestion.
We are able to calculate the consumption and production of energy over time regarding different operation modes and control strategies by combining aerobic and anaerobic biological models with machinery specific data for pumps, aeration systems, CHP units, etc.
Hence connecting the energy consumption with specific costs for energy and investment we can supply our customers with sound data, helping them to find the right decision for their investment.
WWTPs are the main energy consumers in municipalities. Depending on energy efficiency between 18 and 60 kWh per inhabitant and year are consumed.
Our assessment tool "Energy Check" is able to give a fast outlook on possible saving potentials for every WWTP. Only a few basic data of the WWTP are necessary.
With more detailled data, we are able to estimate the different energy savings potentials within the plant. Measures optimizing energy efficiency usually amortize within few years, but give a benefit for many years.
Austria and Germany are leading countries in the field of co-fermentation on WWTPs and the number of applications are growing constantly.
Co-Fermentation is the most efficient measure to increase energy efficiency of WWTPs. Including additional organic waste in the sludge fermentation process, like greases or food waste, the biogas output of the plant can be increased tremendously.
With our experience we can help our clients find the most adequate solution for them, by considering technical and legal requirements as well as costs and the economical benefit.
Furthermore we take over detailed engineering for pre-treatment and dosing stations and help to optimize the operation.
The ideal WWTP has a clean effluent and operates without external energy supplies.
But conditions vary from one WWTP to another. Therefore each WWTP needs its specially adapted answers.
Based on our experience and in combination with innovative assessment strategies, we can provide you with a package of solutions, specially created for the needs of your WWTP.
Industrial waste water in the WWTP influent affects the treatment performance, energy consumption and sludge quality and quantity. Therefore indirect dischargers have to respect special regulations.
We offer support for the assessment of the commercial dischargers, the implementation and maintenance of the indirect discharger cadastre and for the interpretation and evaluation of the monitoring data.
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We are always up to date with the newest improvements and developments in the field of waste water treatment.
We achieve this by a constant knowledge exchange with other experts and operators. We dedicate part of our time to R&D projects on a national or international basis or within our company.
