Water is one of the world’s most valuable resources. However it is under constant threat due to urbanization, explosive population growth and pollution. The most promising efforts to stem water crisis are to treat the wastewater in a sustainable way and reuse for non-potable applications. Grey water (GW) being highly voluminous and relatively less polluted, recycling for non-potable uses like u...

As it is the second-largest freshwater lake downstream of Three Gorges Dam and an important international wetland for migratory birds, there have been concerns about ecological water health Dongting Lake a long time. In present study, we studied evolutionary characteristics quality in three recent years. Moreover, evolution rules dominant groups phytoplankton community were explored, major infl...

The objective was to determine the effect of inoculum concentration on degradation Diesel 2 by a microbial consortium called BIOT.PD001. For this, five systems were designed (in triplicate), which Contained Davis Minimum Medium, 5% as carbon source, and suspension BIOT.PD001 (9 × 108 cells/mL) in concentrations 2, 4, 6, 8, 10% final volume. monitoring carried out indirectly through bacterial co...

Outdoor tanks containing the floating aquatic macrophyte water hyacinth [Eichhornia crassipes (Mart) Solms] were provided with diffuse aeration to evaluate its effect on wastewater treatment efficiency and plant growth. Light aeration (0.003 and 0.021 L nr min ') had no effect on the treatment of primary domestic effluent in the batch-fed water hyacinth tanks. Heavy aeration (1.03 and 3.53 L nr...

The Biochemical Oxygen Demand (BOD) is one of the most widely used criteria for water quality assessment. It provides information about the ready biodegradable fraction of the organic load in water. However, this analytical method is time-consuming (generally 5 days, BOD5), and the results may vary according to the laboratory (20%), primarily due to fluctuations in the microbial diversity of th...

The occurrence and abundance of the microfauna groups were compared with the physico-chemical and operational parameters of the Baoding Lugang Sewage Treatment Plant in China. Attached and crawling ciliates were the dominant groups of ciliates. Crawling ciliates and testate amoebae showed a strong association with effluent BOD5 (biochemical oxygen demand). Therefore, these two groups are likely...

This paper proposes an integrated framework of remote sensing and machine-learning techniques to predict municipal wastewater influent biochemical oxygen demand (BOD5) in treatment plants (WWTPs). The study compares the performance several supervised algorithms, specifically decision tree, random forest, adaptive boosting, gradient boost, extreme boosting against received by two WWTPs South Kin...

Specially designed sequencing batch reactors (SBR) may be a solution to disposal of massive pig manure, rich in nitrogen (N) and phosphorus (P), produced by concentrated swine operations. In this study, the technical feasibility of simultaneous N and P removals for swine manure was investigated through a bench-scale SBR system operated in a cyclic fashion of anaerobic–anoxic–anoxic/anaerobic–an...

Floating platforms at the hydropower plant reservoirs are attractive sites for aquaculture, fishing and other recreational activities. However, the unregulated construction of these platforms may negatively affect the fauna, flora and water quality of reservoirs. Thus, this study aimed to evaluate the impact of floating platforms on the limnological aspects of Nova Ponte hydropower plant reserv...

In Peru, many effluents from domestic wastewater treatment plants often contain high concentrations of biological, physical or chemical contaminants; constituting low quality effluents. this context, the aim research was to evaluate effect produced by bacterial strain Pseudomonas putida ATCC 49128 on variation biochemical oxygen demand (BOD5) extracted plant (WWTP) located in town Collique, dis...