Recent Development of Membrane Processes for Water and Waste Water Treatment

1993 ◽  
Vol 27 (10) ◽  
pp. 141-149 ◽  
Author(s):  
R. Ben Aim ◽  
M. G. Liu ◽  
S. Vigneswaran
Keyword(s):  
Waste Water ◽  
Experimental Study ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Operating Conditions ◽  
Water Disinfection ◽  
Simultaneous Optimization ◽  
Membrane Processes ◽  
The Relationship

Membranes are presently used at industrial scale for water and waste water treatment, but still for limited production. More knowledge of hydrodynamic phenomena has recently resulted in significant technical improvements (backflush, unsteady flow). However an experimental study performed at lab scale in a rotating membrane device has shown the complexity of the relationship between operating conditions, rejection and filtrate flux. The need for bettering the quality of the water (low turbidity) and waster water (disinfection) may be in favour of the development of membrane processes if efficient models allowing simultaneous optimization of quality and productivity are made available (as was done years ago for deep bed filtration).

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

scholarly journals Cyclopentane hydrate-based processes for treating heavy metal containing wastewater

2019 ◽  
Vol 118 ◽  
pp. 04039
Author(s):  
Yamei Yang ◽  
Hang Zhou ◽  
Feng Li ◽  
Changrui Shi ◽  
Shuai Wang ◽  
...  
Keyword(s):  
Waste Water ◽  
Heavy Metal ◽  
Water Treatment ◽  
Enrichment Factor ◽  
Treatment Process ◽  
Waste Water Treatment ◽  
Water Recovery ◽  
Water Treatment Process ◽  
Metal Recycling

The scarcity of water and increasing water pollution are the pressing challenge human being facing. Recovering water and valuable heavy metals is highly desired for treating heavy metal containing wastewater. We proposed a novel hydrate-based process to treat Ni2+ containing wastewater. The water recovery, Ni2+ enrichment factor, desalination efficiency were studied using this cyclopentane hydrate-based method. A water recovery of 43% can be obtained with a desalination efficiency of round 88% and an enrichment factor of 1.6. The desalination efficiency and the quality of the as-made water via the hydrate-based process can be further improved to above 99% via three-stage hydrate reaction. The proposed hydrate-based water treatment process may find wide applications in waste water treatment and heavy metal recycling.

Economic assessment of membrane processes for water and waste water treatment

1995 ◽  
Vol 102 ◽  
pp. 77-91 ◽  
Author(s):  
G. Owen ◽  
M. Bandi ◽  
J.A. Howell ◽  
S.J. Churchouse
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Economic Assessment ◽  
Membrane Processes

scholarly journals Efficiency of application of the microbiological method of waste water treatment to remove hexamethylendiamine

2021 ◽  
Vol 6 (1) ◽  
pp. 28-32
Author(s):  
Valeriia Lytvynenko ◽  
◽  
Alina Dychko ◽  
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Microbiological Method ◽  
Bacterial Cultures ◽  
Quality Of Water ◽  
Nutrition Source

Wastewater contaminated with hexamethylenediamine (HMD), which is discharged into natural reservoirs, causes damage and loss of hydrobionts, worsens the quality of water which becomes unsuitable for use. For wastewater treatment from HMD, the possibility of applying bacterial cultures-destructors which use the HMD as a nutrition source is considered.

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