Sensor clusters (aka sensor networks) are interesting because of the role they play in distributed data collection. Conventionally, a sensor network designer had to worry about getting data from the sensors to a processing application. This paper argues that dedicated data collection networks are better suited to this data collection task. Like the sensor clusters they support, data collection ...

We present an analytical study about the prediction of Suspended Solids in the effluent of a Wastewater Treatment Plant by means Neural Networks. The inputs variables are constituted by ten state variables and three operational parameters. We have implemented two kind of architectures depending on if we consider only one output variable or five variables that describe the water quality at the e...

Mumbai, the financial capital of India is generating about 2700 MLD of sewage from seven service areas and discharging into adjoining coast, Malad, Mahim, Marve and Thane Creeks. The coastal and creeks water quality is deteriorating due to disposal of partially treated sewage, wastewater from open drains as well as industrial wastewater. The objective of present paper is to assess and evaluate ...

Plug-flow activated sludge reactors (ASR) that are step-feed with wastewater are widely adopted in wastewater treatment plants (WWTPs) due to their ability to maximise the use of the organic carbon in wastewater for denitrification. Nitrous oxide (N2O) emissions are expected to vary along these reactors due to pronounced spatial variations in both biomass and substrate concentrations. However, ...

Anaerobic treatment is an attractive option for the biological treatment of municipal wastewater. In this study, municipal wastewater was anaerobically treated with a bench-scale upflow anaerobic sludge blanket (UASB) reactor at temperatures from 6 to 31 °C for 18 months to investigate total chemical oxygen demand (COD) removal efficiency, archaeal community structure, and dissolved methane (D-...

Impact of aging on nanoparticle toxicity in real matrices is scarcely investigated due to a lack of suitable methodologies. Herein, the toxicity of pristine and aged silver nanoparticles (Ag NPs) to a bioluminescent Pseudomonas putida bioreporter was measured in spiked crude and final wastewater samples (CWs and FWs, respectively) collected from four wastewater treatment plants (WWTPs). Results...

Greater urban demand for finite water resources to meet domestic, agricultural, industrial, and recreational needs; increased frequency of drought resulting from erratic weather; and continued degradation of available water resources from point and nonpoint sources of pollution have focused attention on the reuse of degraded waters as a potential water source. However, short- and long-term detr...

This study focused on the diversity of bacterial communities from two series of two-stage constructed wetlands (CWs) treating tannery wastewater, under different hydraulic conditions. Series were separately planted with Typha latifolia and Phragmites australis in expanded clay aggregates and operated for 31 months. The effect of plant species, hydraulic loading and unit stage on bacterial commu...

Energy consumption is a major limitation of wireless sensor networks, with irreplaceable tiny sensors and multi-hop communication in sensor data aggregation as major contributors to this problem. While existing single hop data collection schemes reduce individual sensor energy consumption, they suffer from longer latency and low data delivery ratio. In face of these problems, we propose a mobil...