Characterization of Sediments in Aerated Lagoons and Waste Stabilization Ponds

Naméche, T.; Chabir, D.; Vasel, Jean‐Luc

doi:10.1080/03067319708030494

Cited by 12 publications

(2 citation statements)

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“…Finally, oxygen concentration in the overlaying water ranged from 8.5 to 9.5 mg/L, regardless the experimental condition considered. Sediments strongly affect the performance of WSP during wastewater treatment [29]. The experiment carried out in this study proved that phosphorus removal in WSP can be enhanced by adding ashes from municipal incinerating plants.…”

Section: Enhancement Of Phosphorus Removal In Microcosm Waste Stabilimentioning

confidence: 58%

“…The experiment carried out in this study proved that phosphorus removal in WSP can be enhanced by adding ashes from municipal incinerating plants. However, it is worth mentioning that harmful compounds present in such kind of wastes (such as heavy metals or chlorides) might leach from the sediments [29]. The fate of such harmful pollutants is, however, unclear under the circumstances here considered since it has been also demonstrated that phosphorus adsorption can be used as a chemical process to stabilize heavy metals from bottom ash combustion of municipal solid waste plants [30].…”

Section: Enhancement Of Phosphorus Removal In Microcosm Waste Stabilimentioning

confidence: 95%

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Reusing industrial by-products to enhance phosphorus removal in waste stabilization ponds: laboratory approach

Garfí

Puigagut

2014

Desalination and Water Treatment

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21Waste stabilization ponds (WSP), in spite of being a suitable technology for wastewater 22 treatment, present low phosphorus removal. This study aimed at evaluating the net 23 increase on phosphorus removal efficiency in microcosm WSP in which sludge was 24 conditioned with an adsorbent (industrial by-product) having a high phosphorus 25 retention capacity. In order to determine the best candidate to condition the sludge, four 26 different industrial by-products (granular bentonite; fly ashes from a municipal solid 27 waste incineration plant and two types of fly ashes from power plants) were tested for 28 their phosphorus adsorption capacity. Experimental results were fitted to Langmuir and 29Freundlich models. All adsorbents showed a high phosphorus adsorption capacity. 30Maximum phosphorous adsorption capacity estimated from Langmuir equations ranged 31 between 34.7 and 74.0 mg P/g adsorbent, being fly ashes from a power plant and 32 granular bentonite the adsorbents with the highest and lowest adsorption capacity, 33 respectively. Microcosms WSP were set up and the sludge conditioned with fly ashes 34 from a municipal solid waste incineration plant. Results showed that phosphorus 35 removal efficiency increased up to 90% by adding 5% of adsorbent (in terms of weight 36 of adsorbent to weight of sludge). Main conclusion is that of industrial by-products may 37 be a low cost solution for enhancing phosphorus removal in WSP. 38 39

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Section: Enhancement Of Phosphorus Removal In Microcosm Waste Stabilimentioning

confidence: 58%

Section: Enhancement Of Phosphorus Removal In Microcosm Waste Stabilimentioning

confidence: 95%

Reusing industrial by-products to enhance phosphorus removal in waste stabilization ponds: laboratory approach

Garfí

Puigagut

2014

Desalination and Water Treatment

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A review of the sustainable value and disposal techniques, wastewater stabilisation ponds sludge characteristics and accumulation

Keffala

Harerimana

Vasel

2012

Environ Monit Assess

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Based on worldwide works available in international literature, this paper describes the status of sewage sludge resulting from settleable solids in waste stabilisation ponds (WSP). This review presents, in detail, sludge characteristics, production and accumulation rates in order to provide background information to those who expect to advise or get involved with sewage disposal in situations where resources are limited. Knowing that several years are usually required for a sludge removal operation and that the long-term sustainability of WSP systems is dependent on the safe and effective management of their sludge, its cost must be estimated and taken into account in the annual maintenance costs of the processes. Thus, this paper intends to summarise desludging methods and their financial estimation. Even when ponds have been functioning for several years, most of the sediments are stabilised well, the final disposal is an issue in terms of risk due, for example, to their content in nematode eggs. More generally, the pathogen content in sludge from WSP ponds has to be known to define an appropriate management and to safeguard public health. Based on existing data, the rates and distribution of helminth eggs will be presented and practical treatment methods will be suggested. A number of sludge utilisation and disposal pathways will also be summarised. Sludge activity in terms of oxygen consumption is also discussed in order to gather more information to improve pond design and keep an economic and sustainable value of WSP. The objectives of the present review are to advance knowledge and gather scientific and technical information on all aspects of sludge management including production, characterisation, management, agricultural reuse and ultimate disposal.

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Insights into the enhancement of the ASB benthal solids digestion rate

Mahmood¹

2008

Water Research

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Characterization of Sediments in Aerated Lagoons and Waste Stabilization Ponds

Cited by 12 publications

References 13 publications

Reusing industrial by-products to enhance phosphorus removal in waste stabilization ponds: laboratory approach

Reusing industrial by-products to enhance phosphorus removal in waste stabilization ponds: laboratory approach

A review of the sustainable value and disposal techniques, wastewater stabilisation ponds sludge characteristics and accumulation

Insights into the enhancement of the ASB benthal solids digestion rate

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