An intermittent discharge waste stabilisation pond system was trialled for treatment of a seasonal wastewater load from a campsite. The system showed rapid acclimatisation to incoming load, with chlorophyll-a exceeding 700 mg l−1 within 2 weeks and filtered and unfiltered effluent biochemical oxygen demand below 20 and 30 mg l−1 respectively. Good performance continued for some weeks, after which photosynthetic oxygenation capacity in the first pond was seriously impaired by a shock loading believed to include fatty material. Inflow to the system was suspended and a surface film was broken up, after which the pond recovered within an 8-day period. Laboratory experiments indicated that interventions such as artificial aeration and dilution with effluent had no beneficial effect although mixing may have increased the rate of recovery.
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Research Article| March 01 2013
Operation and recovery of a seasonally-loaded UK waste stabilisation pond system
C. J. Banks;
S. Zhang, C. J. Banks, S. Heaven, A. M. Salter; Operation and recovery of a seasonally-loaded UK waste stabilisation pond system. Water Sci Technol 1 March 2013; 67 (5): 1105–1112. doi: https://doi.org/10.2166/wst.2013.657
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