Open Access Published since May 30, 2018

Waste Treatment and Recovery

Formerly Liquid Waste Recovery

ISSN: 2544-8544

About this journal

The Waste Treatment and Recovery (WTR) journal has been closed since the beginning of the 2019.

The journal covered topics broadly related to environmental protection treatment, including also process waste treatment with biological and/or physicochemical tools, that aims at recycling and reuse of material saving environment and natural resources.

The journal was published in Open Access model and is archived in Portico.

All authors retain copyright, unless – due to their local circumstances – their work is not copyrighted. The copyrights are governed by the Creative-Commons license.

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Supplementary Materials

Editorial Policy

Topics

Volume 3 Issue 1

July 2018

Open Access July 26, 2018

COD reduction of process wastewater with vacuum evaporation

Andras Jozsef Toth, Eniko Haaz, Botond Szilagyi, Tibor Nagy, Ariella Janka Tarjani, Daniel Fozer, Anita Andre, Nora Valentinyi, Szabolcs Solti, Peter Mizsey

Page range: 1-7

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Abstract

Washing detergents in process wastewaters from fine chemical industry produce high Chemical Oxygen Demand (COD), which poses a serious environmental problem. Method has to be found, which follows the principles of circular economy so that the treated water can be recycled or reused. Heat pump vacuum evaporator is evaluated in order to reduce the Chemical Oxygen Demand of process wastewater with washing detergent content from initial 7500 mg O 2 /L to a lower value below the effluent limit , which is 1000 mg O 2 /L. Yield and COD rejection are determined for the evaluation of selected treatment. Experiments are investigated with LED Italia R150-v3 pilot apparatus. Different evaporation pressures were applied during measurements. It The highest removal or reduction of in the Chemical Oxygen Demand was reached certainly using the lowest possible pressure, which is 40 mbar.

Open Access August 25, 2018

Treatment of Pharmaceutical Process Wastewater with Hybrid Separation Method: Distillation and Hydrophilic Pervaporation

Andras Jozsef Toth, Eniko Haaz, Tibor Nagy, Ariella Janka Tarjani, Daniel Fozer, Anita Andre, Nora Valentinyi, Szabolcs Solti, Peter Mizsey

Page range: 8-13

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Abstract

The work is motivated by an industrial problem, which is alcohol removal from pharmaceutical process wastewater. The aim of the study was to develop a complete hybrid operation is investigated. Ethanol dehydration, in combination with distillation and hydrophilic pervaporation, is used to investigate about the extent of separation of the ethanol-water mixture. The aim of this research is to rigorously model and optimize this hybrid operation in professional flowsheet simulator environment. The number of minimal theoretical plates of distillation column and minimal effective membrane transfer area are determined. Cost estimation is also examined according to Douglas methodology. Considering our results it can be concluded that, the distillation and hydrophilic pervaporation processes are suitable for separation ethanol and water in 99.5 weight percent purity

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Editorial

Publisher
DE GRUYTER Poland
Bogumila Zuga 32A Str.
01-811 Warsaw, Poland
T: +48 22 701 50 15

Editorial Contact
Dr. Agnieszka Bednarczyk-Drag
Senior Manager Journal Development
Agnieszka.Bednarczyk-Drag@degruyter.com

(Deutsch)

Type: Journal
Language: English
Publisher: De Gruyter Open Access
First published: May 30, 2018
Publication Frequency: 1 Issue per Year