Brachymonas chironomi strain AIMA4(T) (Halpern et al., 2009) is a Gram-negative, non-motile, aerobic, chemoorganotroph bacterium. B. chironomi is a member of the Comamonadaceae, a family within the class Betaproteobacteria. This species was isolated from a chironomid (Diptera; Chironomidae) egg mass, sampled from a waste stabilization pond in northern Israel. Phylogenetic analysis based on the ...

There is lack of consensus in the literature regarding the extent of virus-particle associations in waste stabilization ponds (WSPs) and the implications for virus removal. In this study, the associations of F+ coliphage (measured with the double agar layer plaque assay) and human adenovirus (measured via quantitative PCR) with WSP particles of different sizes were analyzed using a cascade filt...

A low-cost high-efficiency wastewater treatment system for small communities up to ~500 p.e. is described. The treatment process comprises a septic tank, a secondary facultative waste stabilization pond and an aerated rock filter. For a wastewater flow of 200 litres per p.e. per day and a BOD contribution of 50 g per p.e. per day the expected final effluent quality is ~5 mg BOD, ~5 mg SS and ~4...

This study presents an approach for obtaining realization sets of parameters for nitrogen removal in a pilot-scale waste stabilization pond (WSP) system. The proposed approach was designed for optimal parameterization, local sensitivity analysis, and global uncertainty analysis of a dynamic simulation model for the WSP by using the R software package Flexible Modeling Environment (R-FME) with t...

fly ash is one of the most plentiful and versatile of the industrial by-products. at present, nearly 150 million tonnes of fly ash is being generated annually in india posing dual problem of environmental pollution and difficulty in disposal. this calls for establishing strategies to use the same effectively and efficiently. however, it is only in geotechnical engineering applications such as t...

Due to territorial condition and available land in Iran cities, Stabilization Ponds are one of the best choices for wastewater treatment. Studies whole the world indicates that treated water from a well design pond is more reliable than other systems. The other point for accepting this system is related to low cost of installation and operation. The present study is about  Khomein  city of stab...

background: the effective size of the end grain of horizontal roughing filters (hrfs) is larger than 2 mm. this study aimed to examine the efficiency of hrfs in removing nitrate, phosphate, and chemical oxygen demand (cod) from effluent of a wastewater stabilization pond. methods: this experimental study was conducted in 2013. the pilot project was transferred to the karaj wastewater treatment ...

background: today, treated wastewater recycling and reuse has been considered for agricultural irrigation. this can potentially cause health and environmental hazards. since accessing the engelberg index for sewage is a necessity, this study was undertaken on integrated stabilization ponds (isp) of isfahan east wastewater treatment plant, isfahan, iran. methods: this cross-section study was con...

The design of stabilization ponds for the treatment of wastewater is traditionally based on empirical guidelines. Even more the hydraulic design is normally over simplify. However, the performance of a pond will highly depend on the proper hydraulic design. This paper present an approach that combines the traditional empirical design with the use of modelling tools to predict the performance of...