scholarly journals Characterization of Water Treatment Plant's Sludge and its Safe Disposal Options

2016 ◽  
Vol 35 ◽  
pp. 950-955 ◽  
Author(s):  
T. Ahmad ◽  
K. Ahmad ◽  
M. Alam
Keyword(s):  
Water Treatment ◽  
Safe Disposal ◽  
Disposal Options

Characterization of Water-in-Oil Emulsion and Upgrading of Asphalt with Supercritical Water Treatment

2017 ◽  
Vol 31 (2) ◽  
pp. 1468-1477 ◽  
Author(s):  
Di Shu ◽  
Yong Chi ◽  
Jieli Liu ◽  
Qunxing Huang
Keyword(s):  
Water Treatment ◽  
Supercritical Water ◽  
Oil Emulsion ◽  
Water In Oil Emulsion

scholarly journals Molecular Characterization of Human-Pathogenic Microsporidia and Cyclospora cayetanensis Isolated from Various Water Sources in Spain: a Year-Long Longitudinal Study

2012 ◽  
Vol 79 (2) ◽  
pp. 449-459 ◽  
Author(s):  
Ana Luz Galván ◽  
Angela Magnet ◽  
Fernando Izquierdo ◽  
Soledad Fenoy ◽  
Cristina Rueda ◽  
...  
Keyword(s):  
Drinking Water ◽  
Longitudinal Study ◽  
Water Treatment ◽  
Molecular Characterization ◽  
Drinking Water Treatment ◽  
Enterocytozoon Bieneusi ◽  
Content Type ◽  
Cyclospora Cayetanensis ◽  
Water Treatment Plants

ABSTRACTRecent studies suggest the involvement of water in the epidemiology ofCyclospora cayetanensisand some microsporidia. A total of 223 samples from four drinking water treatment plants (DWTPs), seven wastewater treatment plants (WWTPs), and six locations of influence (LI) on four river basins from Madrid, Spain, were analyzed from spring 2008 to winter 2009. Microsporidia were detected in 49% of samples (109/223),Cyclosporaspp. were detected in 9% (20/223), and both parasites were found in 5.4% (12/223) of samples. Human-pathogenic microsporidia were detected, includingEnterocytozoon bieneusi(C, D, and D-like genotypes),Encephalitozoon intestinalis,Encephalitozoon cuniculi(genotypes I and III), andAnncaliia algerae.C. cayetanensiswas identified in 17 of 20 samples. To our knowledge, this is the first study that shows a year-long longitudinal study ofC. cayetanensisin drinking water treatment plants. Additionally, data about the presence and molecular characterization of the human-pathogenic microsporidia in drinking water, wastewater, and locations of influence during 1 year in Spain are shown. It is noteworthy that although the DWTPs and WWTPs studied meet European and national regulations on water sanitary quality, both parasites were found in water samples from these plants, supporting the idea that new and appropriate controls and regulations for drinking water, wastewater, and recreational waters should be proposed to avoid health risks from these pathogens.

scholarly journals PHYSICAL-CHEMICAL CHARACTERIZATION OF SOILS TREATED WITH SEWAGE SLUDGE COMPOST

2010 ◽  
Vol 2 (5) ◽  
pp. 87-92
Author(s):  
Milda Radžiūtė ◽  
Audronė Matusevičiūtė
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Sewage Sludge ◽  
Organic Waste ◽  
Organic Fertilizer ◽  
Chemical Characterization ◽  
Waste Dump ◽  
Sludge Compost ◽  
Sewage Sludge Compost

Sewage dump is the main organic waste component accumulating in water treatment companies, and therefore the utilization of dump remains a burning issue. Fertilization is the most popular and cheapest way of using sewage dump a part of which is intended for agriculture in most European countries for composting purposes. Sewage dump or its compost are suitable for fertilizing the upper layers of the soil in cases the concentration of heavy metals is not greater than sanitarian standards can tolerate. The examinations were carried out using different waste dump rates from Vilnius water treatment facility in willow (Salix viminalis) grown cultivated fields. The analysis of the soil was executed after one and two years following the fertilization process. The obtained results indicate that waste dump is a valuable organic fertilizer which contains small amounts of heavy metals. Separate heavy metals migrate from sewage sludge compost to plants differently. It was noted that the concentration of heavy metals in willows was greater (except for Pb and Cd) than that in the soil.

Characterization of organic matter and disinfection by-products in membrane backwash water from drinking water treatment

2009 ◽  
Vol 168 (2-3) ◽  
pp. 753-759 ◽  
Author(s):  
Lingling Zhang ◽  
Ping Gu ◽  
Zijie Zhong ◽  
Dong Yang ◽  
Wenjie He ◽  
...  
Keyword(s):  
Drinking Water ◽  
Organic Matter ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
By Products

Polymer Consumption, Environmental Concerns, Possible Disposal Options, and Recycling for Water Treatment

2020 ◽  
pp. 971-989
Author(s):  
Tawfik A. Saleh ◽  
Gaddafi I. Danmaliki
Keyword(s):  
Water Treatment ◽  
Municipal Solid Waste ◽  
Rapid Growth ◽  
Specific Pattern ◽  
Environmental Concerns ◽  
Consumption Pattern ◽  
Polymer Waste ◽  
Production And Consumption ◽  
Industrialized Nations ◽  
Disposal Options

The increasing awareness of the environment has raised so much concerns in the way we live and the manner to which we dispose our waste. The rapid growth in polymer production has resulted in increasing concerns about the consumption of nonrenewable resources and the environmental impacts associated with its production and disposal. Polymer waste is one of the major components in municipal solid waste and is increasingly becoming a huge burden in industrialized nations. The rise in the use of plastic, coupled with increasing concerns about its disposal, has led to a renewed interest in its recycling and recovery. The technologies involved in the recovery and recycling of polymers are rapidly growing, however, there is no specific pattern of treating polymer waste. The technology depends on the type of material used in the production and consumption pattern. This chapter, therefore, discusses the patterns of polymer consumption, the environmental concerns, and different modes of recycling polymer waste.

Application of Magnetic Nanomaterials for Water Treatment

2021 ◽  
pp. 1211-1229
Author(s):  
Ambreen Lateef ◽  
Rabia Nazir
Keyword(s):  
Water Treatment ◽  
Critical Issue ◽  
Magnetic Nanomaterials ◽  
Synthesis And Characterization ◽  
Aquatic Life ◽  
The People ◽  
The World ◽  
Adsorption Processes ◽  
Clean Drinking Water

The availability of clean drinking water becomes a critical issue for all the people of the world due to a rapid increase in population and industrialization. The water bodies get contaminated due to the discharge of wastewater, that will not only disturb the aquatic life but also badly affect human health. Therefore, different methods are adopted to treat the contaminated water to make it clean and safe for people. In last few years, the nanomaterials have gained much attention for water treatment because of their unique properties. Among all nanomaterials, magnetic nanomaterials are considered more efficient and attractive because of their easy separation and reusable property. In this chapter, a brief review related to synthesis and characterization of MNM was studied along with their application in removal of dyes, heavy metals, and microbes from wastewater through simple adsorption processes.

Detailed experimental and numerical characterization of turbulent flow in components of a water treatment plant

2019 ◽  
Vol 80 (11) ◽  
pp. 2117-2130
Author(s):  
Ivan Matías Ragessi ◽  
Carlos Marcelo García ◽  
Santiago Márquez Damián ◽  
Cecilia Pozzi Piacenza ◽  
Mariano Ignacio Cantero
Keyword(s):  
Water Treatment ◽  
Turbulent Flow ◽  
Treatment Plant ◽  
Acoustic Doppler Current Profiler ◽  
Water Treatment Plant ◽  
Mean Flow ◽  
Cross Sectional ◽  
Flow Recirculation ◽  
Hydraulic Design

Abstract This paper presents a detailed characterization of turbulence in the incoming flow to the clarification component of a water treatment plant, ‘Los Molinos’ (Córdoba, Argentina). The main problems were related to the presence of turbulent flow patterns throughout the treatment, affecting the proper development of the physical processes required for water clarification. Namely: (a) a poor hydraulic design that could produce a non-homogeneous spatial distribution of the flow, recirculation zones and flow stagnation, and a non-uniform discharge distribution among the sedimentation units as a result of different cross-sectional dimensions of the transverse-channel, and (b) high turbulence intensity that affect the flocs' size as well as the efficiency of the settling tanks and filters. Firstly, a detailed in-situ experimental characterization of the turbulent flow was undertaken. An acoustic Doppler velocimeter (ADV) was used to characterize the flow turbulence, whereas for discharge measurements and mean flow velocity field an acoustic Doppler current profiler (ADCP) was employed. Secondly, a numerical model, based on the Reynolds-averaged Navier–Stokes (RANS) equations and the - turbulence closure model, was validated with the experimental data. Finally, based on the results, a diagnosis and recommendations were made for the optimization of the hydraulic design of the water treatment plant.

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