scholarly journals Quantum Dots in Waste Water Treatment- Review Article

2020 ◽  
Vol 5 (8) ◽  
pp. 1449-1455
Author(s):  
Dr. A. Sandy Subala ◽  
Dr. K.V. Anand ◽  
Mr.S.Antony Sibi
Keyword(s):  
Waste Water ◽  
Quantum Dots ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Review Article ◽  
Contaminated Water ◽  
Chemical Methods ◽  
Treatment Review ◽  
Different Types

The effluents present in the water resources leads unqualified for various domestic and irrigation purposes. The waste water treatment purely depends upon the volume of contaminants. The objective of the study was to gives a detailed discussion about the chemical methods and different types of QDs involved, examining their effluents removing efficiency, the selectivity and sensitive detection of various chemicals present in the contaminated water bodies.

The new technology of waste water treatment by using bioreactors with bio membranous movable bed – biochips

2020 ◽  
Vol 10 (3) ◽  
pp. 276-292
Author(s):  
Maria Y. Savostyanova ◽  
◽  
Lidia А. Norina ◽  
Arina V. Nikolaeva ◽  
◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Waste Water Treatment ◽  
Combined Treatment ◽  
Research Work ◽  
Pollution Level ◽  
Waste Waters ◽  
Treatment Facilities ◽  
Movable Bed

Retaining of water resources quality is one of the global ecological problems of the modern time. The most promising direction in solving the problem of water resources protection is the reduction of negative environmental influence of waste water from production facilities by upgrading the existing water treatment technologies. To treat utility water, technical and rain water from site facilities of Transneft system entities, the specialists developed and approved standard technological diagrams, which are used in producing treatment facilities. The standard technological diagrams provide for all necessary stages of waste water treatment ensures the reduction of pollution level to normal values. However, during operation of treatment facilities it was established, that to ensure the required quality of waste water treatment with initially high levels of pollution, the new technological solutions are necessary. The author presents the results of scientific-research work, in the context of which the best affordable technologies were identified in the area of the treatment of waste water with increased content of pollutants and non-uniform ingress pattern. On the basis of the research results the technical solutions were developed for optimization of operation of existing waste water treatment facilities by means of using combined treatment of technical and rain waters and utility waste waters and applying bioreactor with movable bed – biochips. The use of bioreactor with movable bed allows the increase in the area of active surface, which facilitates increase and retention of biomass. Biochips are completely immersed into waste waters, and biofilm is formed on the entire volume of immersion area, facilitating retention of biomass and preventing formation of sediments. Due to mixing the floating device with biofilm constantly moves along the whole area of bioreactor, and, in doing so, speeds up biochemical processes and uniformity of treatment. The advantages of a bioreactor with movable bed – its active sludge durability against increased and changing pollutant concentrations, change of waste water temperature and simplicity of application – ensured the possibility of its use for blending utility waters, technical and rain waters.

Carbon quantum dots anchored TiO2 nanofibers: Effective photocatalyst for waste water treatment

2015 ◽  
Vol 41 (9) ◽  
pp. 11953-11959 ◽  
Author(s):  
Prem Singh Saud ◽  
Bishweshwar Pant ◽  
Al-Mahmnur Alam ◽  
Zafar Khan Ghouri ◽  
Mira Park ◽  
...  
Keyword(s):  
Waste Water ◽  
Quantum Dots ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Carbon Quantum Dots ◽  
Tio2 Nanofibers ◽  
Anchored Tio2

Review on magnetic nanoferrites and their composites as alternatives in waste water treatment: synthesis, modifications and applications

2020 ◽  
Vol 6 (3) ◽  
pp. 491-514 ◽  
Author(s):  
Mukesh Kumar ◽  
Harmanjit Singh Dosanjh ◽  
Sonika ◽  
Jandeep Singh ◽  
Kamarul Monir ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Present Review ◽  
Different Types ◽  
Surface Modified ◽  
Alternative Adsorbents

The present review highlights different types of nanoferrites and their surface-modified composites as alternative adsorbents in waste water treatment.

Decision Support for Sludge Disposal Strategy Development to Resolve Urban and Regional Water Resources Management Conflicts

2010 ◽  
Vol 5 (3) ◽  
Author(s):  
J. Tamás ◽  
J. Fehér
Keyword(s):  
Waste Water ◽  
Decision Support ◽  
Water Treatment ◽  
Water Resources ◽  
Water Resources Management ◽  
Waste Water Treatment ◽  
Resources Management ◽  
Water Treatment Plants ◽  
Waste Water Treatment Plants ◽  
Regional Water

In the 1990s water quality protection was underdeveloped in Central and Eastern Europe (CEE) compared to EU 15 countries in most indicators. After the CEE countries joined the EU, all of them started to invest significant amounts to implement the requirements of EU water policies in the field of waste water collection and treatment, where efficient use of resources was function of several factors. In Hungary, a new National Sewerage and Waste Water Treatment Strategy was elaborated, which predicted that during the subsequent decade, the amount of sludge produced at waste water treatment plants would increase significantly. Environmental impacts and economical deposition of the increased amount of sludge have not been investigated in the Strategy. The paper presents an investigation, which was carried out with the application of a newly developed GIS based decision support methodology to identify suitable agricultural areas for deposition of the predicted increased amount of sludge taking into consideration multi-criteria hydrological, environmental, technical, economic and societal conditions that are all important in regional water resources management. The investigation included the entire territory of Hungary. It was concluded that only 25% of the agglomerations indentified in the Strategy has actually enough agricultural land for sludge utilization or other word: placement. This fact influences the investment and upgrading programmes of the waste water treatment plants in the future.

scholarly journals Inhibition of Activated Sludge Respiration by Heavy Metals

2020 ◽  
Vol 14 ◽  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Water Treatment ◽  
Activated Sludge ◽  
Waste Water Treatment ◽  
Domestic Waste ◽  
Heavy Metal Concentrations ◽  
Water Treatment Plants ◽  
Different Types

Inhibition of the respiration microbial activity in the activated sludge caused by heavy metal concentrations (Cr, Cd, Cu and Ni) was studied by means of respirometric method using Strathtox respirometer (Strathkelvin Glasgow).The studied sludge samples were obtained from the two waste water treatment plants with different types of pollution (municipal waste water and domestic waste water)

A Cohesive 3-R Approach for Domestic Water Treatment

2019 ◽  
pp. 597-603
Author(s):  
NeethaDelphin Mary K ◽  
Murali Mohan N ◽  
Vijayalakshmi P
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Water Resources ◽  
Rainwater Harvesting ◽  
Waste Water Treatment ◽  
Wastewater Reclamation ◽  
Reclaimed Wastewater ◽  
Domestic Water ◽  
Grey Water ◽  
Alternative Water

Water is critical for all life on the planet. Rapid industrialization and urbanization has caused India to face a water crisis since it has only 4 percent of the world’s water resources. In order to resolve the crisis, India has to look for alternative water resources which may include rainwater harvesting, grey water and sewage reuse and desalination. Grey water is defined as waste water generated from the bathroom, laundry and kitchens. Nearly 70 percent of the water used in households results in grey water which can be treated using simple technology and reused. Reuse of grey water reduces the fresh water requirements and reduces the amount of sewage sent to treatment plants. An integrated approach is needed to manage the water and waste water treatment so that water supply is kept clean and waste water is recycled for beneficial use in agriculture and industry. Water and energy are important resources in the 21st century. Water is required to supply energy, and energy is required to supply water. The reclamation of wastewater can contribute significantly to the conservation of water and energy resources. Wastewater reclamation and reuse can relieve water scarcity. Reclaimed wastewater can be substituted for natural water. Wastewater is now extensively recognized as an important source of water in water-scarce countries. In recent years not only the threats of improper greywater management have been recognized; there is an increasing international recognition that greywater reuse, if properly done, has a great potential as alternative water source for purposes such as irrigation, toilet flushing, car washing and others.

scholarly journals ROLE OF QUANTUM DOTS (QDS) IN SEA WATER TREATMENT- REVIEW ARTICLE

2020 ◽  
Vol 8 (6) ◽  
pp. 937-941
Author(s):  
A. Sandy Subala ◽  
◽  
K.V Anand ◽  
Keyword(s):  
Quantum Dots ◽  
Water Treatment ◽  
Sea Water ◽  
Review Article ◽  
Treatment Review
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