Consultancy Assignment: Camping Site, Holland
During the high season approximately 12 m³ of domestic wastewater is produced daily on the camping site. According to the legal permits, the treated wastewater must be discharged through a soil infiltration. Discharge in surface waters is not allowed.
To maximize the nutrient removal, a hybrid system was designed. The last stage, a stabilization pond, acts as a soil infiltration.
To maximize the nutrient removal, a hybrid system was designed. The last stage, a stabilization pond, acts as a soil infiltration.
Hybrid System: Horizontal Subsurface Flow CW, Free Water Surface, Stabilization Pond |
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Design basis
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80 p.e.
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Type of Wastewater
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domestic wastewater
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Hydraulic Loading
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12 m³/day
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Pretreatment: Septic Tank |
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Effective volume
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30 m³ in total
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Residence Time
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approximately 2.5 days
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Layout
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5 different (existing) septic tanks in series
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Horizontal Subsurface Flow Constructed Wetland (HSSF) |
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Surface Area
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350 m²
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Length x Width
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35 m x 10 m
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Depth
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0.70 m (mean value, slope 0.57%)
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Filtration Materials
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Gravel 4/14 (Inlet gravel 8/32, outlet gravel 8/32)
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Vegetation
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Phragmites australis
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Free Water Surface (FWS) |
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Surface Area
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110 m²
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Water Level
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maximum 0.45 m
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Vegetation
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Iris pseudacorus, Scirpus lacustris, Typha latifolia, Pontederia cordata, Butomus
umbellatus, Menyanthus trifoliata, Phalaris arundinacea
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Stabilization Pond |
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Surface Area
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140 m²
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Water Level
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maximum 1.45 m
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Vegetation
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(possibly) Lemna minor
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Main Characteristics
Rietvelden