منابع مشابه
Ammonia volatilisation in waste stabilisation ponds: a cascade of misinterpretations?
Ammonia volatilisation has generally been reported as, or assumed to be, the main nitrogen removal mechanism in waste stabilisation ponds (WSP). Nitrogen removal via ammonia volatilisation is based on two observations: (a) in-pond pH values can reach high values (>9, even >10), so increasing the proportion of the total ammonia present as the un-ionized form or free ammonia (NH(3)); and (b) in-p...
متن کاملSimple intervention to reduce mosquito breeding in waste stabilisation ponds.
Waste stabilisation ponds (WSP) are the preferred method for treatment of urban wastewater in low-income countries but, especially in arid regions, the pond systems can be important breeding sites for mosquitoes of medical importance. In a WSP system in Faisalabad, Pakistan, we assessed the impact of simple environmental interventions on mosquito occurrence and abundance. Reducing the amount of...
متن کاملNitrification-denitrification in waste stabilisation ponds: a mechanism for permanent nitrogen removal in maturation ponds.
A pilot-scale primary maturation pond was spiked with (15)N-labelled ammonia ((15)NH(4)Cl) and (15)N-labelled nitrite (Na(15)NO(2)), in order to improve current understanding of the dynamics of inorganic nitrogen transformations and removal in WSP systems. Stable isotope analysis of delta(15)N showed that nitrification could be considered as an intermediate step in WSP, which is masked by simul...
متن کاملSeasonally loaded waste stabilisation ponds: a novel application for intermittent discharge.
This research examined the use of a single facultative pond for treatment of an intermittent discharge from a UK campsite. The system was monitored over an 11-month period to determine the optimum time for discharge in terms of quality standards. The results showed that based on organic strength, discharge was possible in winter between November and March but February was the optimum to meet nu...
متن کاملQuantifying the Impact of Sludge Accumulation on the Hydraulic Performance of Waste Stabilisation Ponds
........................................................................................................................... 2 Acknowledgements .......................................................................................................... 3 Table of
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ژورنال
عنوان ژورنال: Water Intelligence Online
سال: 2015
ISSN: 1476-1777
DOI: 10.2166/9781780402109