title: Operation and recovery of a seasonally-loaded UK waste stabilisation pond system.
abstract: 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.
authors: Faculty of Engineering & Environment, University of Southampton, Southampton, UK.
authors: S
authors: S
authors: Zhang
authors: C J
authors: CJ
authors: Banks
authors: S
authors: S
authors: Heaven
authors: A M
authors: AM
authors: Salter
mesh_terms: D057919:Biological Oxygen Demand Analysis; D002734:Chlorophyll / Q000032:analysis; D000077194:Chlorophyll A; D006863:Hydrogen-Ion Concentration; D010100:Oxygen / Q000032:analysis; D010788:Photosynthesis; D061005:Ponds; D012621:Seasons; D006113:United Kingdom; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D002734:Chlorophyll; D010100:Oxygen; D000077194:Chlorophyll A