scholarly journals Costs of water treatment due to diminished water quality: A case study in Texas

1998 ◽  
Vol 34 (4) ◽  
pp. 849-853 ◽  
Author(s):  
David Dearmont ◽  
Bruce A. McCarl ◽  
Deborah A. Tolman
Keyword(s):  
Water Quality ◽  
Water Treatment

Tuning the enhanced coagulation process to obtain best chlorine and THM profiles in the distribution system

2004 ◽  
Vol 4 (4) ◽  
pp. 235-243 ◽  
Author(s):  
I. Fisher ◽  
G. Kastl ◽  
A. Sathasivan ◽  
P. Chen ◽  
J. van Leeuwen ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Distribution System ◽  
Substantial Reduction ◽  
Produce Water ◽  
Enhanced Coagulation ◽  
System A ◽  
Treatment Processes ◽  
The Impact

Water treatment processes produce water with low turbidity and colour. It is also now becoming necessary to reduce DOC (Dissolved Organic Carbon) so that less chlorine is lost in a distribution system and less THMs (trihalomethanes) are formed. Enhanced coagulation (exceeding other requirements) at pH of about 5-6 is known to significantly reduce DOC so that acceptable water quality can be achieved at the tap. In this paper, models are integrated to project the impact of water treatment on water quality through the entire distribution system. A DOC removal model, which predicts DOC resulting from a given coagulant, its dose and the coagulation pH, is used to simulate the treatment. By linking this model of DOC removal with models of chlorine decay and THM formation, the impact of treatment on chlorine and THM concentrations in a distribution system can be simulated. This method was applied in a case study with relatively high initial DOC. It was shown that more DOC can be removed by using ferric coagulant than the current practice achieves. This would result in an improved chlorine profile and a substantial reduction in THM concentrations.

A Decentralized Grey Water Treatment and Reuse System in a Residential Area for Landscaping and Environmental Purposes

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
X. C. Wang ◽  
B. B. Cheng ◽  
R. Chen
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Residential Area ◽  
Daily Consumption ◽  
Artificial Lake ◽  
Grey Water ◽  
Pipe System ◽  
Second Stage ◽  
The Cost

A case study was conducted in a residential area in Xi'an, China for grey water treatment and reuse for landscaping and environmental purposes. Through a dual-pipe system, grey water and black water were separately collected from 6 buildings at a flow rate about 100 m3/d. The collected grey water was treated by a hybrid physicochemical process using a fluidized pellet bed separator as the first stage and by ozone enhanced flotation as the second stage. In order to maintain good water quality in the artificial lake, part of the stored water was sent back to the second stage of the treatment facilities for water quality polishing. From the pond, water was also pumped for gardening and other non-potable uses. The average daily consumption (for gardening, surface evaporation and other losses) was about 60 m3/d. The project was proved technically feasible because the treatment system could provide water with good quality to meet the specification of for scenic environment reuse and sustain a beautiful water environment. It was also proved economically feasible because the cost for water reclamation could be well compensated by the cost saved for purchasing fresh water which would be consumed for the same purpose of landscaping and environmental water use. This case study provided a good example of decentralized wastewater treatment and reclamation for landscaping and environmental reuse.

scholarly journals Case study to evaluate the influence of the SolarBees and dossage on the water quality of the Rietvlei Dam Water Treatment Plant.

2012 ◽  
Vol 31 (1) ◽  
Author(s):  
S. Booyens ◽  
D. De Vos ◽  
Sandra Barnard ◽  
Leanne Coetzee
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Water Samples ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Raw Water ◽  
Raw Water Quality ◽  
The Difference

The aim of this project was to investigate the influence of the SolarBees and dosage on the water quality at Rietvlei Dam WTP. The difference between the raw and final water samples was less than anticipated due to the drastic improvement in raw water quality of Rietvlei Dam.

Improving drinking water treatment without tariff impact: the Spanish case study

2017 ◽  
Vol 18 (4) ◽  
pp. 1357-1364 ◽  
Author(s):  
José Antonio Palomero-González ◽  
Francesc Hernández-Sancho
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Treatment ◽  
Drinking Water Treatment ◽  
Water Source ◽  
Economic Resources ◽  
Cost Functions ◽  
Cost Impact ◽  
Quality Water

Abstract Water is essential for our lives and activities. Everyone can drink good quality water, the question is whether they have access to it in the first place. Water quality and its treatment depend on the water source. This treatment has costs that users have to pay in the water tariff. It is very important to establish a water tariff that permits the best water treatment and has a low impact on the users. Cost functions are a useful tool to predict costs before an implementation or improvement. This article, using three easy steps (analysis, obtaining costs and modification of the water tariff) proposes improving water purification treatment using cost functions in order to find the best solution for providing the best quality water with the least cost impact on the water tariff. This methodology aims to help supply managers justify their decisions in order to optimise the available economic resources.

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