🌱 Constructed wetland wastewater treatment plant for the Richňava recreation area, municipality of Štiavnické Bane

📍BANSKÁ BYSTRICA REGION - Within this project, the connection of existing recreational facilities to a newly built constructed wetland wastewater treatment plant (WWTP) was executed. 

📊 Type: Horizontal filter 40 m² + vertical filter 40 m²; WWTP operates without electricity

🔧 Utilization type: intermittent - 33 residents

📍 Location: GPS 48.429655, 18.842743

The newly constructed sewer line runs from the Penzión Richňava facility to the pipe outlet into an infiltration facility. The existing sanitary sewer line was shared by all affected buildings and previously drained into an existing wastewater treatment plant owned and managed by Comenius University. According to the design specifications, the shared sanitary sewer was interrupted after the last connected facility, which is Penzión Richňava. From there, wastewater first flows into sedimentation tanks with a total volume of 18 m³ into a horizontal filter. Following initial pre-treatment, the water enters a storage chamber equipped with an EKOPULZ pulse dosing unit and subsequently onto a vertical filter. Due to the absence of a nearby watercourse, infiltration into the ground was the only viable solution. The treated wastewater currently irrigates an existing mature oak grove even during periods of extreme drought.

The treatment plant is in continuous operation, and samples taken at the plant outlet demonstrate proper system performance throughout both summer and winter months. Over two years of plant maintenance, the sedimentation tank was desludged, and the plants were mowed before winter to ensure that new shoots emerge in spring to aesthetically complement the surroundings of Penzión Richňava.

📝 Example of wastewater analysis results from the treatment plant:

12/2018 - BOD5: 2.7 mg/l; TSS: 5.4 mg/l

02/2019: BOD5: 12 mg/l; TSS: 2 mg/l

05/2019: BOD5: 3.2 mg/l; TSS: 4.6 mg/l

08/2019: BOD5: 4 mg/l; 6.4 mg/l