Task
Turnkey construction of a municipal wastewater treatment plant for domestic wastewater with pre-treatment, biological treatment, post-treatment and sludge treatment in the digestion tower for biogas production.
Design data
Preparation quantity:
- Daily wastewater volume: 40,000 m³/d
- Max. Inflow volume: 8,000 m³/h
- Population equivalent: 129,500 PE
Target parameters:
- Treated wastewater in accordance with EU water legislation requirements for discharge
- BOD: 25 ppm, COD: 125 ppm, TSS: 35 ppm, TN: 15 ppm, TP: 2 ppm
Solution & implementation
Our holistic wastewater treatment process comprises the following key steps:
1. mechanical pre-treatment: In the first step, the wastewater passes through coarse and fine screening to remove coarse impurities. An aerated sand trap is then installed to efficiently separate fats and oils from the wastewater.
2. biological treatment and post-treatment: The second stage involves biological wastewater treatment with nitrification, denitrification and biological phosphorus elimination using our ALMA BHU BIO technology. Floating substances and the remaining biomass settle in the final clarifier.
3. biogas production / sludge treatment: The sludge produced in the process is collected separately in a sludge thickener and then fermented in two biogas reactors using our ALMA BHU GMR technology. The biogas produced is then purified of hydrogen sulphide through a gas desulphurization process and converted into electricity and heat using a combined heat and power unit (CHP).
Our holistic approach not only ensures efficient wastewater treatment, but also utilizes the energy potential of the process, making it a sustainable and environmentally friendly solution. For further information or inquiries, please do not hesitate to contact us.
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