Treatment Techniques for Waste Water from Chemical Industries

1988 ◽  
pp. 205-217 ◽  
Author(s):  
E. Plattner ◽  
Ch. Comninellis
Keyword(s):  
Waste Water ◽  
Treatment Techniques

scholarly journals Ecological/economical and Organizational/legal Problems of Transition to the System of Water Quality Regulation on the Basis of the Best Available Techniques

2014 ◽  
pp. 120-130
Author(s):  
Keyword(s):  
Waste Water ◽  
Water Quality ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Waste Waters ◽  
Urban Waste ◽  
Best Available Techniques ◽  
Treatment Techniques ◽  
Quality Regulation ◽  
Legal Problems

Analysis of possibilities of the existing urban waste water treatment techniques has been presented. It is mentioned that the problem of the beat available techniques choice is inseparably linked with correction of the current normalizing system in terms of composition of not only treated waste waters but also in terms of requirements to enterprises that dispose water into a sewage network.

The Research Programme “RWZI 2000”: State of Affairs and a Look into the Future

1993 ◽  
Vol 27 (5-6) ◽  
pp. 35-37 ◽  
Author(s):  
A. H. Dirkzwager ◽  
J. de Jong ◽  
P. C. Stamperius ◽  
G. B. J. Rijs
Keyword(s):  
Waste Water ◽  
Water Purification ◽  
Research Programme ◽  
Point Of View ◽  
Municipal Waste ◽  
Potential Treatment ◽  
Treatment Techniques ◽  
Sludge Disposal ◽  
State Of Affairs ◽  
High Treatment

Nowadays, in spite of the high treatment capacity in the Netherlands, problems relating to the treatment of municipal waste water are still not completely solved. They are related to stricter effluent requirements, environmental nuisance, sludge disposal and the costs of waste water purification. A research programme entitled “Future Treatment Techniques for Municipal Waste Water” or briefly “RWZI 2000” is being carried out to develop and evaluate potential treatment techniques in different stages of development. These techniques must result in a better performance from the point of view of environmental protection and/or lower annual treatment costs than the technology available at present. In the paper a description is given of the studies carried out and the results obtained will be presented with respect to the problems occurring in the treatment of municipal waste water.

scholarly journals Qualitative and Quantitative Characterization of Waste Water for Small Communities

1990 ◽  
Vol 22 (3-4) ◽  
pp. 253-260 ◽  
Author(s):  
R. Pujol ◽  
A. Lienard
Keyword(s):  
Waste Water ◽  
Rural Areas ◽  
Way Of Life ◽  
Small Communities ◽  
Qualitative And Quantitative ◽  
Fundamental Factor ◽  
Treatment Techniques ◽  
Points Of View ◽  
Selection Of

An understanding of the waste water nature, from both the qualitative and quantitative points of view, is a fundamental factor in the selection of treatment techniques and their subsequent operation. This is even more so in the case of small communities whose discharges are more subject to variation. An analysis of French data in this field provides values for small communities in rural areas (the majority). So far as other communities are concerned there are three examples which particularly illustrate the effects of the different factors (way of life…) on specific loads.

scholarly journals Ecofriendly Decolorisation of Textile Waste Water Using Natural Coagulants

2019 ◽  
Vol 8 (2) ◽  
pp. 41-44
Author(s):  
P. Sasirekha ◽  
S. Shankar Krishna ◽  
S. Vembukumar ◽  
L. Vignesh
Keyword(s):  
Waste Water ◽  
Toxic Substance ◽  
Polluted Water ◽  
Purification Method ◽  
Textile Materials ◽  
Treatment Techniques ◽  
Water Plant ◽  
Natural Coagulants ◽  
Finishing Processes ◽  
Textile Waste Water

The Process of production of textile or wet treatment and finishing processes of textile materials are huge consumers of water with high quality. As a result of these various processes, considerable amounts of polluted water are released. The project emphasis on the problem of environmental protection against waste water generated by the industry. The selection of the purification method depends on the composition and types of waste water. Plant extracts are used as natural coagulants for decolorizing the dye effluents. Removal of toxic substance from the discharged effluent is paramount. Chemical treatment techniques are effective for color removal but require more energy and expensive than biological process. They contaminate the environment and require additional cost for disposal.

scholarly journals KINETIC STUDY IN REMOVAL OF DYE IN AQUEOUS SOLUTION BY THE BABASSU COCONUT CHARCOAL MODIFIED WITH CITRIC ACID

2017 ◽  
Vol 14 (28) ◽  
pp. 42-49
Author(s):  
Isabel do Nascimento SILVA ◽  
Janiele Mayara Ferreira de ALMEIDA ◽  
Nedja Suely FERNANDES
Keyword(s):  
Waste Water ◽  
Citric Acid ◽  
Langmuir Model ◽  
Charcoal Production ◽  
Order Model ◽  
Inexpensive Method ◽  
Coconut Charcoal ◽  
Treatment Techniques ◽  
Aquatic Flora ◽  
Pseudo Second Order

Dyes are among the class of compounds considered dangerous to aquatic flora and fauna, thus it is important to treat waste water contaminated by this substances. Among different treatment techniques, adsorption shows an efficient and inexpensive method for treating large amount of waste. Babassu coconut charcoal (BCC) arises as an alternative to charcoal production, because it is a quite biomass found in several of Brazil. The BCC was treated with citric acid and the babassu coconut charcoal modified with citric acid (BCCMod) was used in the adsorption tests with the methylene blue (MB). The results show that citric acid acted on the charcoal surface without being incorporated into their structure. The adsorption kinetics in this study is governed by the pseudo-second-order model, where the amount adsorbed in the equilibrium was 1.5424 mg g-1 agreement with the value calculated for this model 1.5625 mg g-1. Among the models employed in this study for adsorption isotherms, what better applied to the experimental data was the Langmuir model, with a correlation coefficient of 0.9870.

Innovation of conventional water treatment techniques in effluent reclamation

2002 ◽  
Vol 2 (1) ◽  
pp. 281-288
Author(s):  
J.F. Kramer ◽  
J.H.J.M. van der Graaf ◽  
R.T. van der Velde ◽  
E. van't Oever ◽  
A.A.L. van Kessel
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Careful Consideration ◽  
Additional Treatment ◽  
Waste Water Treatment Plant ◽  
Direct Filtration ◽  
Treatment Techniques ◽  
Wwtp Effluent

For reclamation of waste water treatment plant (wwtp) effluent, conventional water treatment techniques used in drinking water supply may be suitable. Earlier studies and experiments showed that the most promising cost-effective conventional techniques to polish wwtp effluent are coagulation and rapid multi-media filtration (direct filtration). In the past 4 years these techniques were tested in long term experiments on pilot scale (5-10 m3/h) at several waste water treatment plants in The Netherlands. For successful application of direct filtration for the removal of suspended solids and colloidal material careful consideration is needed with the coagulation conditions. However additional treatment is required to meet the standards for household and process water with respect to ammonium, colour, pathogens and (biodegradable) organic substances.

Fluxes of nutrients in urban drainage systems: assessment of sources, pathways and treatment techniques

1997 ◽  
Vol 36 (8-9) ◽  
pp. 167-172 ◽  
Author(s):  
Thilo Herrmann ◽  
Uwe Klaus
Keyword(s):  
Waste Water ◽  
Water Flow ◽  
Surface Waters ◽  
Drainage System ◽  
Urban Drainage ◽  
Literature Study ◽  
Water Separation ◽  
Treatment Techniques ◽  
The Mean ◽  
Per Capita

On the basis of a literature study the sources and pathways of water, nitrogen and phosphor are identified. The mean annual load is related to the number of inhabitants and given in mass or volume per capita and year. The toilets are identified as predominant sources of N and P. 60% of nitrogen and 80% of phosphor are concentrated in 2 liters or 1% of the water flow. The drainage system is a diluting system. The introduction of waste water separation at the source is recognized to be most effective to improve the surface waters quality. Innovative source separating technologies are recommended for modern drainages' future.

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