Construction of a large water treatment plant: appraisal of environmental hotspots

2019 ◽  
Vol 172 ◽  
pp. 309-315 ◽  
Author(s):  
Nilay Elginoz ◽  
Muhammed Alzaboot ◽  
Fatos Germirli Babuna ◽  
Gulen Iskender
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Large Water

Life cycle assessment of a large water treatment plant in Turkey

2018 ◽  
Vol 26 (15) ◽  
pp. 14823-14834 ◽  
Author(s):  
Alaa Saad ◽  
Nilay Elginoz ◽  
Fatos Germirli Babuna ◽  
Gulen Iskender
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Large Water

Sludge and washwater management strategies for the Vaalkop water treatment plant

2001 ◽  
Vol 44 (6) ◽  
pp. 73-80
Author(s):  
J. Haarhoff ◽  
P. van Heerden ◽  
M. van der Walt
Keyword(s):  
Water Treatment ◽  
South African ◽  
Management Practices ◽  
Current System ◽  
Management Strategies ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Design Parameters ◽  
Legislative Framework ◽  
Large Water

The Vaalkop plant, owned and operated by Magalies Water, provides a valuable South African case study of sludge and washwater management at a large water treatment plant. Starting out as a small plant of 18 Ml/day about thirty years ago, it has steadily grown to a plant with treatment capacity of 210 Ml/day; fairly large by South African standards. During the preceding years, it has not only been subject to a vastly larger scale of operation, but it also had to adapt to a tremendous increase in the cost of raw water, an increased environmental awareness amongst water treatment professionals and general public alike, and a much more sophisticated and complicated legislative framework. It is the objective of this paper to track the sludge and washwater management practices adopted over the years at Vaalkop, and to present the current strategies adopted for the medium to long term. The paper will summarize the previous methods of sludge and washwater disposal, with reasons why they were adopted. The multitude of technical analyses and alternatives that were performed over the years will be summarized, and may provide valuable pointers for other applications in South Africa. The current system, which has just been commissioned, will be presented; its technical design parameters, the anticipated mode of operation, its costs and how the current environmental and legislative requirements are being met.

Characterization and treatment of lime sludge dewatering effluents

1992 ◽  
Vol 19 (5) ◽  
pp. 794-805 ◽  
Author(s):  
H. Zhou ◽  
D. W. Smith ◽  
S. J. Stanley
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Organic Content ◽  
Management Options ◽  
Sludge Dewatering ◽  
Bench Scale ◽  
Regulatory Constraints ◽  
Lime Sludge ◽  
Large Water

With ever increasing regulatory constraints on the disposal of residuals produced during water treatment, the cost of handling, treatment, transport, and disposal of these residuals has become a significant portion of overall water treatment costs. In plants practicing lime softening, a major source of residuals is lime sludge. Of the many options proposed for the management of lime sludges most include sludge dewatering. The dewatering process produces effluents that also must be disposed of. This paper presents the results of the characterization of dewatering effluents from a large water treatment plant. Also presented are treatment and management options which were evaluated through designed bench-scale experiements.The quality and quantity of supernatant effluents from the thickener and centrate from the centrifuge were determined. It was found that the supernatant is composed predominantly of calcium ions and caustic alkalinity which can be treated through pH adjustment. The centrate was found to be of much poorer quality with poor settling and filterability properties. These qualities were found to be mostly attributed to the high organic content of the centrate. Bench-scale tests found that polymer pretreatment could substantially improve both the settleability and filterability of the centrate. Key words: water treatment, sludge dewatering, softening, polymers, sludge conditioning.

DESIGNING OF REMOTE TERMINAL UNIT (RTU) FOR MEASUREMENT OF pH IN WATER TREATMENT PLANT

2019 ◽  
Vol 10 (1) ◽  
pp. 16
Author(s):  
V. MANE-DESHMUKH PRASHANT ◽  
B. MORE ASHWINI ◽  
B. P. LADGAOKAR ◽  
S. K. TILEKAR ◽  
◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Terminal Unit ◽  
Remote Terminal ◽  
Remote Terminal Unit

ENHANCED COAGULATION FOR ALGAE REMOVAL IN A TYPICAL ALGERIA WATER TREATMENT PLANT

2017 ◽  
Vol 16 (10) ◽  
pp. 2303-2315 ◽  
Author(s):  
Djamel Ghernaout ◽  
Abdelmalek Badis ◽  
Ghania Braikia ◽  
Nadjet Mataam ◽  
Moussa Fekhar ◽  
...  
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Enhanced Coagulation ◽  
Algae Removal

Sadr City R3 Water Treatment Plant Baghdad, Iraq

2008 ◽  
Author(s):  
Angelina Johnston ◽  
Kevin O'Connor ◽  
Todd Criswell
Keyword(s):  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant

Water treatment to reduce internal corrosion in the drinking water distribution system in Oslo

2001 ◽  
Vol 1 (3) ◽  
pp. 91-96 ◽  
Author(s):  
L.J. Hem ◽  
E.A. Vik ◽  
A. Bjørnson-Langen
Keyword(s):  
Water Treatment ◽  
Corrosion Rate ◽  
Distribution System ◽  
Water Distribution ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Corrosion Monitoring ◽  
Copper Corrosion ◽  
Iron Corrosion ◽  
Internal Corrosion

In 1995 the new Skullerud water treatment plant was put into operation. The new water treatment includes colour removal and corrosion control with an increase of pH, alkalinity and calcium concentration in addition to the old treatment, which included straining and chlorination only. Comparative measurements of internal corrosion were conducted before and after the installation of the new treatment plant. The effect of the new water treatment on the internal corrosion was approximately a 20% reduction in iron corrosion and a 70% reduction in copper corrosion. The heavy metals content in standing water was reduced by approximately 90%. A separate internal corrosion monitoring programme was conducted, studying the effects of other water qualities on the internal corrosion rate. Corrosion coupons were exposed to the different water qualities for nine months. The results showed that the best protection of iron was achieved with water supersaturated with calcium carbonate. Neither a high content of free carbon dioxide or the use of the corrosion inhibitor sodium silicate significantly reduced the iron corrosion rate compared to the present treated water quality. The copper corrosion rate was mainly related to the pH in the water.

Cost-effective water treatment of polluted surface water by using direct filtration and granular activated carbon filtration

2002 ◽  
Vol 2 (1) ◽  
pp. 233-240 ◽  
Author(s):  
J. Cromphout ◽  
W. Rougge
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Treatment Process ◽  
Treatment Plant ◽  
Granular Activated Carbon ◽  
Cost Effective ◽  
Water Treatment Plant ◽  
Direct Filtration ◽  
Carbon Filtration ◽  
Effective Water

In Harelbeke a Water Treatment Plant with a capacity of 15,000 m3/day, using Schelde river water has been in operation since April 1995. The treatment process comprises nitrification, dephosphatation by direct filtration, storage into a reservoir, direct filtration, granular activated carbon filtration and disinfection. The design of the three-layer direct filters was based on pilot experiments. The performance of the plant during the five years of operation is discussed. It was found that the removal of atrazin by activated carbon depends on the water temperature.

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