Waste stabilization ponds in France: a report on fifteen years experience

In 1992, a survey was conducted on the performance of waste stabilization ponds in France. The data selected come from a sample of 178 ponds, with an average capacity of 600 p.e., throughout France. For each plant, one or several input--output load measurements over a 24-h period are available. The average organic load level received is approximately 25 kg BOD/ha.d, representing 50% of the nominal load. The quality of the treated water is presented based on the type of sewerage system feeding the ponds. The results appear dispersed, however; in 70% of the cases the concentrations in COD and BOD on filtered samples are under 120 mg/l and 40 mg/l, respectively, and the concentration in TSS under 120 mg/l (discharge standards in France for waste stabilization ponds). The reductions in nitrogen and phosphorus nutrients are on average from 60% to 70%. The influence of different parameters (sewerage system type, organic load, season, age of plant, etc.) was studied. The results appear noticeably worse when the ponds receive wastewater from a strictly separate sewerage system.

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Performance of a system combining aerated lagoons and waste stabilization ponds in a temperate climate

Water Science & Technology ◽

10.2166/wst.2000.0600 ◽

2000 ◽

Vol 42 (10-11) ◽

pp. 23-34 ◽

Cited By ~ 5

Author(s):

T. Nameche ◽

O. Dufayt ◽

H. El Ouarghi ◽

J.L. Vasel

Keyword(s):

High Efficiency ◽

Treatment Plant ◽

Organic Load ◽

Temperate Climate ◽

Absolute Difference ◽

Waste Stabilization Ponds ◽

Mean Absolute Difference ◽

Stabilization Ponds ◽

Waste Stabilization ◽

Components Analysis

AbstractThe Bertrix wastewater treatment plant was designed and built for experimental purposes, especially for comparing aerated lagoons and stabilization ponds in a temperate climate. This plant was designed for a capacity of 7500 inhab. eq, and aerated lagoons were dimensioned to eliminate 50% of the organic load. The remaining load has to be degraded in the series of stabilization ponds. In this paper we shall present the plant in more detail and the results of a 3-year study, i.e., 79 rounds of samples for each of the five ponds under study, placing emphasis on the performances of aerated lagoons and stabilization ponds. Principal components analysis (of inflow and outflow) of aerated lagoons and stabilization ponds will be presented and commented on. The most important factors are the hydraulic loading and the concentrations. Seasonal variations appear only in the basins' temperatures. The fates of nitrogen compounds are quite different from those of organic compounds, confirming that a high efficiency of nitrogen removal is difficult to achieve, especially for short residence times (less than eight days). A few other conclusions of our study are given below: The ponds' hydrodynamics has been studied and a mathematical model is now available If there is no stratification in the ponds, a thermal model can be proposed where the mean absolute difference is 0.7°C±0.2. In the system under study, the contribution of algal biomass to the system is very small.

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Hydro-biological characterization and efficiency of natural waste stabilization ponds in a desert climate (city of Assa, Southern Morocco)

Journal of Water Supply Research and Technology—AQUA ◽

10.2166/aqua.2021.125 ◽

2021 ◽

Author(s):

Badre Achag ◽

Hind Mouhanni ◽

Abdelaziz Bendou

Keyword(s):

Principal Component ◽

Water Clarity ◽

Organic Load ◽

Low Oxygen ◽

Rapid Urbanization ◽

Waste Stabilization Ponds ◽

Stabilization Ponds ◽

Waste Stabilization ◽

Physico Chemical ◽

The City

Abstract The city of Assa is located in a Saharian area characterized by an arid climate and water scarcity. Like any other Saharian city in a developing country, the city is facing the challenges of rapid urbanization and the need to improve wastewater treatment and management. The main objective of this work is to assess the performance of waste stabilization ponds in an arid area. This evaluation concerns microbiological and physico-chemical monitoring over three and twelve months respectively. Microbiological results indicate bacterial elimination rates of over 90% in autumn–winter due to the effectiveness of facultative ponds with 20–25 days of retention time, water clarity, ponds depth, and high sunlight exposure and penetration. Physico-chemical parameters surpass the Moroccan standards for reuse except Ph and T0 by 20–30%, this wastewater is relatively loaded with various pollutants, especially high organic load and low oxygen content. Statistical analysis has been made by principal component analysis (PCA), and confirms that dissolved oxygen, total suspended solids, COD and BOD5 do not reach the threshold for discharge into the natural environment, and moreover their reuse. For the improvement of the quality of these waters, it is legitimate to provide an upgrade of this plant by a tertiary treatment with maturation ponds.

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Performance Evaluation of Pilot Waste Stabilization Ponds in Subtropical Region

Water Science & Technology ◽

10.2166/wst.1992.0615 ◽

1992 ◽

Vol 26 (7-8) ◽

pp. 1717-1728 ◽

Cited By ~ 4

Author(s):

M. A. Khan ◽

S. I. Ahmad

Keyword(s):

Fecal Coliform ◽

Domestic Wastewater ◽

Climatic Conditions ◽

Maximum Efficiency ◽

University Campus ◽

Subtropical Region ◽

Waste Stabilization Ponds ◽

Stabilization Ponds ◽

Waste Stabilization

This research investigation was aimed at demonstrating the technical feasibility of facultative waste stabilization ponds under the climatic conditions of subtropical region. A pilot plant was designed and constructed at the Karachi University Campus for the treatment of domestic wastewater. An intensive analytical programme was followed for ten months for evaluating performance efficiency of the facultative ponding system. The algal-bacterial symbiotic system performed satisfactorily and provided effluent with total BOD5 ranging between 26-76 mg/L, total COD ranging between 59-197 mg/L, TKN ranging between 5.35-47.82 mg/L, NH3-N ranging between 0.23-28.98 mg/L, and PO4-P between 1.41-6.76 mg/L. The maximum efficiency achieved for the removal of coliform, fecal coliform and fecal streptococci was 99.99%. The study demonstrated that high BOD5 loading of 507 kg/ha d was possible without deteriorating the quality of performance. It was particularly observed that wind velocity had a pronounced effect on the overall efficiency of the system. It was concluded that facultative ponding system is strongly feasible for this part of the world for the treatment of wastewater.

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Transformation of Waste Stabilization Ponds: Reengineering of an Obsolete Sewage Treatment System

Water ◽

10.3390/w13091193 ◽

2021 ◽

Vol 13 (9) ◽

pp. 1193

Author(s):

Silvânia Lucas dos Santos ◽

Adrianus van Haandel

Keyword(s):

Retention Time ◽

Sewage Treatment ◽

Upflow Anaerobic Sludge Blanket ◽

Uasb Reactor ◽

Anaerobic Sludge ◽

Nitrogen And Phosphorus ◽

Waste Stabilization Ponds ◽

Promising Alternative ◽

Stabilization Ponds ◽

Waste Stabilization

Waste Stabilization Ponds (WSPs) are commonly used for sewage treatment. These systems are composed of a series of ponds: (1) anaerobic ponds, (2) facultative ponds, and (3) maturation ponds. WSPs generally produce good-quality effluent in terms of organic matter and pathogen removal, but their application has disadvantages. The most serious disadvantages are a long retention time, the release of biogas, and the impossibility of removing nutrients. A promising alternative to the use of WSPs is replacing the anaerobic pond and facultative pond with an upflow anaerobic sludge blanket (UASB) reactor, with the advantages of greatly reducing the retention time and the biogas capture. The post-treatment ponds of the UASB reactor effluent involve oxygen production and the biological consumption of carbon dioxide, which raises the pH. An experimental investigation showed that it is possible to use polishing ponds in a sequential batch regime instead of continuous flow. This modification accelerates the decay of pathogens and accelerates the increase in pH, which, in turn, facilitates the removal of nitrogen and phosphorus. This produces a good-quality effluent with low concentrations of biodegradable organic material, nutrients, and pathogens. This good-quality effluent is obtained in a system without energy consumption or auxiliary materials and with a much smaller area than conventional stabilization ponds.

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Pour-flush toilets and waste stabilization ponds in a refugee camp

Waterlines ◽

10.3362/0262-8104.1989.018 ◽

1989 ◽

Vol 8 (1) ◽

pp. 2-4

Author(s):

Leo Glensvig ◽

Dorte Glensvig

Keyword(s):

Refugee Camp ◽

Waste Stabilization Ponds ◽

Stabilization Ponds ◽

Waste Stabilization

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Technical Brief No.10: Waste stabilization ponds

Waterlines ◽

10.3362/0262-8104.2004.035 ◽

2004 ◽

Vol 23 (1) ◽

pp. 15-18 ◽

Cited By ~ 2

Keyword(s):

Waste Stabilization Ponds ◽

Stabilization Ponds ◽

Waste Stabilization

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Rotavirus removal in experimental waste stabilization pond systems with different geometries and configurations

Water Science & Technology ◽

10.2166/wst.1995.0497 ◽

1995 ◽

Vol 31 (12) ◽

pp. 285-290 ◽

Cited By ~ 4

Author(s):

J. I. Oragui ◽

H. Arridge ◽

D. D. Mara ◽

H. W. Pearson ◽

S. A. Silva

Keyword(s):

Clostridium Perfringens ◽

Slow Process ◽

Faecal Coliforms ◽

Waste Stabilization Ponds ◽

Stabilization Pond ◽

Waste Stabilization Pond ◽

Stabilization Ponds ◽

Waste Stabilization

Rotavirus removal in waste stabilization ponds is a relatively slow process: in a series of ten ponds (a 1-d anaerobic pond followed by nine 2-d ponds) its numbers were reduced from 1.4 × 105 per litre to zero, and in an “innovative” series (a 1-day anaerobic pond, 3-d facultative pond, 3.8-d, 3-d and 5-d maturation ponds) from 5.1 × 104 per litre to <5 per litre. Faecal coliforms were better indicators of rotaviruses than was Clostridium perfringens .

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