Renovating an Effluent Treatment Plant for renowned German softdrink manufacturer
As one of the first wastewater treatment plants Cuss designed and constructed a biological treatment for a renowned soft drink producer in the early 1990s. The treatment plant was designed in a way that allowed a fairly uncomplicated extension which was realised in 2012. Since then no mentionable malfunctions occurred and a daily wastewater volume of 1500m³can be treated.
NUMBERS & FACTS:
• Place: Prahova County, Romania
• Hydraulic plant capacity: 1500 m³/d
• Organic Load: 1150 mg/l (BSB)
• Year of construction: Extension 2012
CONCEPTUAL FORMULATION
Initially a wastewater treatment plant with two parallel running SBR-basins was designed and constructed. While the biological wastewater treatment took place in the SBRs a mechanical pre-treatment was constructed to protect technical equipment from abrasion. A neutralisation and equalisation basin regulated the pH and supports a smooth biological treatment. The during the biological treatment produced sludge is dewatered and then removed from the system. Due to the cold temperatures during the winter month an insulation of the pipes is needed. To minimize the insulation costs it was decided to place the pipes underground.
Due to increased production capacities and the resulting increase in wastewater production it was decided to extend the wastewater treatment plant in 2012. For the extension a third SBR-basin was integrated into the existing system. Changes in the mechanical pre-treatment or the sludge dewatering were not necessary.
WASTEWATER CONSTITUENTS:
- Sugar, product residues and losses from storage, preparation and bottling
- Glue and fibrous substances from bottle cleaning, labeling and packaging.
- Cleaning alkalis and acid with organic impurities from bottle washing
- Mineral acids and alkalis from water treatment
- Chain glide and belt lubricants from the filling and bottle transport area
PROCESS STEPS:
- Mechanical Pretreatment
- Aeration of Equalisation Tank
- SBR
- Sludge dewatering