Water purification, effluent treatment and recycling of industrial process streams

1993 ◽  
pp. 331-384 ◽  
Author(s):  
Derek Pletcher ◽  
Frank C. Walsh
Keyword(s):  
Water Purification ◽  
Industrial Process ◽  
Effluent Treatment

Electrocoagulation efficiency of the tannery effluent treatment using aluminium electrodes

2009 ◽  
Vol 60 (8) ◽  
pp. 2173-2185 ◽  
Author(s):  
Fernando R. Espinoza-Quiñones ◽  
Marilda M. T. Fornari ◽  
Aparecido N. Módenes ◽  
Soraya M. Palácio ◽  
Daniela E. G. Trigueros ◽  
...  
Keyword(s):  
Experimental Design ◽  
Oxygen Demand ◽  
Industrial Process ◽  
Fractional Factorial ◽  
Effluent Treatment ◽  
Process Efficiency ◽  
Tannery Effluent ◽  
State Variables ◽  
Inorganic Pollutants ◽  
Electro Coagulation

An electro-coagulation laboratory scale system using aluminium plates electrodes was studied for the removal of organic and inorganic pollutants as a by-product from leather finishing industrial process. A fractional factorial 23 experimental design was applied in order to obtain optimal values of the system state variables. The electro-coagulation (EC) process efficiency was based on the chemical oxygen demand (COD), turbidity, total suspended solid, total fixed solid, total volatile solid, and chemical element concentration values. Analysis of variance (ANOVA) for final pH, total fixed solid (TFS), turbidity and Ca concentration have confirmed the predicted models by the experimental design within a 95% confidence level. The reactor working conditions close to real effluent pH (7.6) and electrolysis time in the range 30–45 min were enough to achieve the cost effective reduction factors of organic and inorganic pollutants' concentrations. An appreciable improvement in COD removal efficiency was obtained for electro-coagulation treatment. Finally, the technical-economical analysis results have clearly shown that the electro-coagulation method is very promising for industrial application.

A calibrated UV-LED based light source for water purification and characterisation of photocatalysis

2017 ◽  
Vol 16 (11) ◽  
pp. 1690-1699 ◽  
Author(s):  
A. Sergejevs ◽  
C. T. Clarke ◽  
D. W. E. Allsopp ◽  
J. Marugan ◽  
A. Jaroenworaluck ◽  
...  
Keyword(s):  
Light Source ◽  
Water Purification ◽  
Industrial Process ◽  
Cost Effective ◽  
Uv Led ◽  
Water Cleaning ◽  
And Performance ◽  
Light Engine

Photocatalysis can become a cost effective industrial process for water cleaning. This paper describes the design and performance of a novel LED-based light engine for this purpose.

scholarly journals Wpf - wisser: flotation

2019 ◽  
pp. 247-257
Author(s):  
Per Kock ◽  
Viljo Järvenpä ◽  
Wiser Oy
Keyword(s):  
Water Purification ◽  
Theoretical Background ◽  
Effluent Treatment ◽  
Dissolved Gas ◽  
Internal Circulation ◽  
Solid Matter ◽  
General Outline ◽  
Industrial Plants ◽  
Municipal Effluent

The word flotation is generally understood to mean something that is floating. It is used even in frothing. This presentation focuses on flotation where only microbubbles formed from pressurised dissolved gas raise the solid matter in a liquid to the surface of the liquid in a flotation basin, and the liquid is thereby purified. Flotation is becoming an economical factor in purifying liquids and, above all, waters in internal circulation loops of industrial plants as well as in municipal effluent treatment. The theoretical background of flotation and its applications in WISER FLOTATION will be described in the following. Flotation will also be compared with water purification by sedimentation. Finally, two applications will be described in general outline.

Reuse of Waste Water-Based Paint

2014 ◽  
Vol 600 ◽  
pp. 699-702
Author(s):  
Elcio Correia de Souza Tavares ◽  
Tassyla Talyne Nunes Barbosa ◽  
Jose Narbal de Oliveira Filho ◽  
Carla Gracy Ribeiro Meneses
Keyword(s):  
Waste Water ◽  
Industrial Process ◽  
Rio Grande ◽  
Effluent Treatment ◽  
Building Industry ◽  
Proper Treatment ◽  
Construction Sector ◽  
Soil Cement ◽  
Water Based ◽  
Environmental Guidelines

Brazil is among the five largest world paint producers. According to the Brazilian Association of paint manufacturers, this sector has achieved in 2011 revenues of US$ 3.90 billion and produced 1.359 billion liters of paint. Today, construction sector absorbs about 65% of solid paint in that country. However, all that industrial process increases levels of paint waste, which are so many times disposed without proper treatment producing environmental contamination. Such waste when improperly managed can seriously harm human health as well as the environment. So, currently industries are seeking to minimize the waste at source and reuse them. In the state of Rio Grande do Norte, faced with need to implement environmental guidelines and to reduce environmental impacts caused by waste originating from manufacturing process,. Water-based paint manufacturers use an effluent treatment system through settling tanks and filtration of waste. Such residues can be used utilized in soil-cement bricks making. In this work manufactured soil-cement bricks using water-based paint waste as a fine aggregator. Recycled bricks were characterized by a fine water absorption and compressive strength according ABNT requirements. Results have also shown that these bricks can be used in building industry as a brick sealer.

Sound cleans up water purification

Nature ◽  
2002 ◽  
Author(s):  
Ingrid Holmes
Keyword(s):  
Water Purification

Short Films from a Small Nation

2018 ◽  
Author(s):  
C. Claire Thomson
Keyword(s):  
Public Information ◽  
Industrial Process ◽  
Actor Network Theory ◽  
Documentary Films ◽  
Wide Range ◽  
Short Films ◽  
Post War ◽  
The 1960S ◽  
Art And Architecture

The first book-length study in English of a national corpus of state-sponsored informational film, this book traces how Danish shorts on topics including social welfare, industry, art and architecture were commissioned, funded, produced and reviewed from the inter-war period to the 1960s. For three decades, state-sponsored short filmmaking educated Danish citizens, promoted Denmark to the world, and shaped the careers of renowned directors like Carl Th. Dreyer. Examining the life cycle of a representative selection of films, and discussing their preservation and mediation in the digital age, this book presents a detailed case study of how informational cinema is shaped by, and indeed shapes, its cultural, political and technological contexts.The book combines close textual analysis of a broad range of films with detailed accounts of their commissioning, production, distribution and reception in Denmark and abroad, drawing on Actor-Network Theory to emphasise the role of a wide range of entities in these processes. It considers a broad range of genres and sub-genres, including industrial process films, public information films, art films, the city symphony, the essay film, and many more. It also maps international networks of informational and documentary films in the post-war period, and explores the role of informational film in Danish cultural and political history.

Investigation of particulate systems using optical pathlength spectroscopy

2000 ◽  
Vol 627 ◽  
Author(s):  
Gabriel Popescu ◽  
Aristide Dogariu
Keyword(s):  
Path Length ◽  
Random Media ◽  
Michelson Interferometer ◽  
Industrial Process ◽  
Optical Path Length ◽  
Industrial Applications ◽  
Optical Path ◽  
Interference Signal ◽  
Optical Length ◽  
Reference Mirror

ABSTRACTIn many industrial applications involving granular media, knowledge about the structural transformations suffered during the industrial process is desirable. Optical techniques are noninvasive, fast, and versatile tools for monitoring such transformations. We have recently introduced optical path-length spectroscopy as a new technique for random media investigation. The principle of the method is to use a partially coherent source in a Michelson interferometer, where the fields from a reference mirror and the sample are combined to obtain an interference signal. When the system under investigation is a multiple-scattering medium, by tuning the optical length of the reference arm, the optical path-length probability density of light backscattered from the sample is obtained. This distribution carries information about the structural details of the medium. In the present paper, we apply the technique of optical path-length spectroscopy to investigate inhomogeneous distributions of particulate dielectrics such as ceramics and powders. The experiments are performed on suspensions of systems with different solid loads, as well as on powders and suspensions of particles with different sizes. We show that the methodology is highly sensitive to changes in volume concentration and particle size and, therefore, it can be successfully used for real-time monitoring. In addition, the technique is fiber optic-based and has all the advantages associated with the inherent versatility.

Effluent Treatment for Sago Industry Using Zeolite and Activated Carbon

2014 ◽  
Vol 2014 (2) ◽  
pp. 18-26 ◽  
Author(s):  
S. Anbukumar ◽  
◽  
Ashok Kumar ◽  
Keyword(s):  
Activated Carbon ◽  
Effluent Treatment
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