Analysis of the turbidity of raw water in the context of water-supply safety

2020 ◽  
Vol 186 ◽  
pp. 281-289
Author(s):  
Dawid Szpak ◽  
Barbara Tchórzewska-Cieślak ◽  
Katarzyna Pietrucha-Urbanik
Keyword(s):  
Water Supply ◽  
Raw Water ◽  
Water Supply Safety

Leading the City of Baltimore into the 21st Century: Flexible Treatment Solutions and Integrated Raw Water Management

2010 ◽  
Vol 5 (4) ◽  
Author(s):  
J. L. Manuszak ◽  
M. MacPhee ◽  
S. Liskovich ◽  
L. Feldsher
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Water Supply ◽  
Conceptual Design ◽  
Membrane Filtration ◽  
Treatment Plant ◽  
Low Pressure ◽  
Management Tool ◽  
Raw Water ◽  
The City

The City of Baltimore, Maryland is one of many US cities faced with challenges related to increasing potable water demands, diminishing fresh water supplies, and aging infrastructure. To address these challenges, the City recently undertook a $7M study to evaluate water supply and treatment alternatives and develop the conceptual design for a new 120 million gallon per day (MGD) water treatment plant. As part of this study, an innovative raw water management tool was constructed to help model source water availability and predicted water quality based on integration of a new and more challenging surface water supply. A rigorous decision-making approach was then used to screen and select appropriate treatment processes. Short-listed treatment strategies were demonstrated through a year-long pilot study, and process design criteria were collected in order to assess capital and operational costs for the full-scale plant. Ultimately the City chose a treatment scheme that includes low-pressure membrane filtration and post-filter GAC adsorption, allowing for consistent finished water quality irrespective of which raw water supply is being used. The conceptual design includes several progressive concepts, which will: 1) alleviate treatment limitations at the City's existing plants by providing additional pre-clarification facilities at the new plant; and 2) take advantage of site conditions to design and operate the submerged membrane system by gravity-induced siphon, saving the City significant capital and operations and maintenance (O&M) costs. Once completed, the new Fullerton Water Filtration Plant (WFP) will be the largest low-pressure membrane plant in North America, and the largest gravity-siphon design in the world.

The use of particle monitoring in the performance optimisation of conventional clarification and filtration processes

1997 ◽  
Vol 36 (4) ◽  
pp. 191-198
Author(s):  
G. Standen ◽  
P. J. Insole ◽  
K. J. Shek ◽  
R. A. Irwin
Keyword(s):  
Activated Carbon ◽  
Water Supply ◽  
Laser Diffraction ◽  
Raw Water ◽  
Particle Distributions ◽  
Upper Limit ◽  
Start Up ◽  
On Line ◽  
Particulates Removal ◽  
Particle Monitoring

The application of laser diffraction particle monitoring to the performance optimisation of a pilot clarifier and full-scale rapid gravity filters (RGF), operating on water supply works in Hampshire, is described. Furthermore the dosing of powdered activated carbon (PAC) into the works' clarifiers has been evaluated in terms of RGF performance. A costly proposal to install a third filter medium was subsequently abandoned when it was found that particle numbers in the filtered water were consistently below 1×102/ml. Various combinations and doses of coagulants and flocculant aids, shown to give optimum particulates removal during intensive jar testing trials, were transferred to the pilot clarifier. Particle monitoring enabled a more accurate derivation of suitable blanket chemistry and optimum blanket heights than turbidity changes. Raw water turbidities were 10-15 NTU at start-up with corresponding counts beyond the upper limit of the particle monitor. An on-line dilution system was developed to overcome this problem. Latex bead (4.33 μm) and Lycopodium spore (4-5 μm) suspensions (about 1 × 109 particles) were injected into the pilot clarifier to assess the removal efficiency of Cryptosporidium-sized particles. Reductions of about 1.7 log and 2.6 log were achieved for the beads and spores, respectively. Particle distributions of various PAC's and a bentonite were obtained in order to assess their potential effects on the coagulation process during clarification. Bentonite was also beneficial as an on-line means of checking particle monitor response and calibration. The works' filters achieved 1.5 to 2.0 log removals of 2-5 μm particles without media addition or operational changes. Combined clarification and filtration gave better particulates removal than two-stage microfiltration.

scholarly journals Ultramicro Analysis of Odorous Materials by Massfragmentography in Raw Water Source of Water Supply

1978 ◽  
Vol 98 (1) ◽  
pp. 124-128
Author(s):  
YOSHITERU TSUCHIYA ◽  
TOSHIHIKO OKAMOTO
Keyword(s):  
Water Supply ◽  
Water Source ◽  
Raw Water

scholarly journals Analysis Of Raw Water Supply In Pucang Gading Housing Complex, District Of Demak To Preparation Of Water Resources And Water Resources Management

2018 ◽  
Vol 73 ◽  
pp. 03012
Author(s):  
Solikhul Abdi ◽  
Sudarno
Keyword(s):  
Drinking Water ◽  
Water Resources ◽  
Water Supply ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Source ◽  
Water Sources ◽  
Service Area ◽  
Raw Water ◽  
Housing Complex

Pucang Gading Housing Complex is an area within the Village Batursari, District of Demak with a population of 2018 as many as 44,257 inhabitants. Raw water service system Mranggen Unit is divided into 5 areas of service (service area Mranggen, Batursari I, Batursari II, Batursari III and Kebon) which utilize raw water source of water treatment plant (IPA Waru) and 8 Wells In a total discharge of 120 liter/second. The number of home connections in Pucang Gading area is currently 3,374 house connections, with a total water usage 14.25 liter/second Water discharges from clean water sources in Pucang Gading region are currently not maximally available to supply water to Pucang Gading service area. In this research will know the problems and readiness that exist by looking from the achievement of Medium Term Development Plan of Demak Regency Year 2016-2021. This research uses SWOT analysis method that is internal and external factors. The selection of raw water sources for drinking water should pay attention to aspects of quality, quantity and continuity. Demak Regency has the potential of surface water either river/ reservoir/dam. The problems and challenges of drinking water supply include issues of safe access to water supply, and regulation of groundwater utilization for the community.

Implementation of Drinking Water Supply Programs And Sanitation Community Based (PAMSIMAS) (at Blora District, Blora Regency, Central Java)

2020 ◽  
Vol 7 (8) ◽  
pp. 255-262
Author(s):  
Munawar Noor ◽  
Christine Diah ◽  
Pratiwi Tedjo
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Program Implementation ◽  
Public Awareness ◽  
Water Sources ◽  
Raw Water ◽  
Delegation Of Authority ◽  
Central Java ◽  
Sample Technique ◽  
The Individual

This research was initiated from the Pamsimas program targets have not yet been achieved. The causes were limited water sources and raw water supply, sanitation and hygiene behavior, public awareness of the importance of healthy living behavior was low. This study was to describe and analyze the implementation of the Pamsimas program and the supporting/inhibiting factors of the Program. This study used a qualitative approach by selecting key-informants based on a purposive sample technique. The results showed that the the implementation of the Pamsimas Program in Blora Sub-district was not optimal in terms of the variables as a prerequisite for program implementation. These prerequisites tend to be rigid, making it difficult for program implementers in the field to make decisions that are not included in the standard operational procedures (SOP). On the other hand, the individual and community behavior and participatory to the program in supporting the provision of clean water to be positiveBesides that the factors of limited water sources and raw water supply, unsafe sanitation and drinking water remained unsolved. Recommendations of the conclusions of the study are the delegation of authority related to the bureaucratic structure, especially the standard operating procedures (SOP) and the absence / scarcity of raw water sources for clean watethat needs attention to program managers in the field. 

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