Nestlé Holešov, Czech Republic
Nestlé Holešov, Czech Republic
Nestlé Holešov is a confectionery manufacturer. In the past, the generated wastewater was pretreated only using a flotation unit before being discharged into the municipal sewer system. Nowadays, the wastewater treatment plant has been upgraded with the addition of high-load anaerobic reactor with granular biomass. The final effluent is anaerobically pretreated wastewater that meets the requirements of municipal sewer regulations. Another by-product is biogas, produced in the anaerobic reactor, which has significant energy potential and used in factory.
Inlet
COD
Design parameters
18 052 mg/l
Operational phase
13 274 mg/l
Outlet
COD
Legislative requirements
1 600 mg/l
Operational phase
504 mg/l
Efficiency
COD
Legislative requirements
91,1 %
Operational phase
96,2 %
Parameters
Project
Capacity
33 099 PE
220 m3/d
Type of wastewater:
Industrial / Confectionery production
Technology:
Mechanical pretreatment: rotary sieve
Anaerobic treatment: mixtank, acidification (balancing) tank anaerobic reactor, biogas management
Tertiary treatment: Dissolved air flotation unit, sludge tank
References
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