Performance of small water treatment plants: The case study of Mutshedzi Water Treatment Plant

2011 ◽  
Vol 36 (14-15) ◽  
pp. 1151-1158 ◽  
Author(s):  
R. Makungo ◽  
J.O. Odiyo ◽  
N. Tshidzumba
2020 ◽  
Vol 8 (4) ◽  
pp. 1345-1351

Water maintenance operations and management are so expensive, and costs too much money, Lean principles can serve maintenance sector and any sector like manufacturing and services, since it will reduce costs and efforts of workers. Lean principles first used in Toyota and then distributed in all over the world, it aims to minimize costs and eliminate all wastes in any operation or processes. Costs of water treatment plants water maintenance operations are so high and contains a lot of wastes. This paper aims to apply Lean principles in water maintenance operations in all sectors and then apply them in a water treatment plant as a case study. Also the paper discussing the capability of applying Lean tools like 5S which can be applied on maintenance operation to measure Lean applicability. MTBF, MTTR, 5S audit scores, Availability and reliability are calculated here. The methodology followed in this study depending of reviewing related studies and collecting some data from water filtration station maintenance department, then analyze them and deriving some conclusions to prove the presented claims. Availability and reliability are calculated for some given data from literature and collecting data from special water treatment plant in Kuwait. It is found that applying lean principles and tools like 5’S and others will enhance both availability and reliability of the maintenance system. Applying 5S audit scores shows the statues of the maintenance department and its availability and then reliability to be in good case. The costs and wastes of water maintenance operations in like stations after applying lean are reduced. Applying lean principles like 5’S tool on maintenance management system and water maintenance operations will improve the maintenance quality, MTTR, MTBF, availability and reliability and 5S audit scores of the systems are improved and so number of failures and downtime of the maintained component will be decreased


2013 ◽  
Vol 3 (4) ◽  
pp. 549-556 ◽  
Author(s):  
Kaveh Sookhak Lari ◽  
Morteza Kargar

High-rate lamella settlers in clarifiers and triple media filters have been implemented in Isfahan water treatment plant (known as ‘Baba-Sheikh-Ali’) in Iran to upgrade existing clarification/filtration processes during the recent years. The applied technologies are mainly used to reduce finished water turbidity as the primary regional criterion on water quality. However, application of both technologies faced some operational limitations since they began to work. These problems are due to the existing layout of the process units and available materials. The current study focuses on performance of restricted application of the two technologies with respect to turbidity removal. Online measured turbidity data from a two-year field observation (since March 2010) are used. In particular, results show a more promising and long-term effect on turbidity removal due to tripling filter media rather than application of the lamella settlers in clarifiers. The reasons for these observations are discussed.


2017 ◽  
Vol 31 (3) ◽  
pp. 330-344 ◽  
Author(s):  
Dan Stein ◽  
Gopal Achari ◽  
Cooper H. Langford ◽  
Mohammed H. I. Dore ◽  
Husnain Haider ◽  
...  

2019 ◽  
Vol 100 ◽  
pp. 00019 ◽  
Author(s):  
Renata Gmurkowska

During water treatment a large amount of sludge is created – in the form of sewage and sediments. The largest amounts of sludge are produced during coagulation, ozonation and backwashing rapid filters. The quality and quantity of treated water, the type and dose of used coagulants are factors affecting the quantity, composition and properties of the sludge. Sludge produced during processing of drinking water is important problem and their quantity has been increasing. The study focuses on characteristics of water treatment sludge from four water treatment plants in Cracow. It includes theoretical and experimental part. The first part is based on analysis of literature and information obtained from MPWiK [3]. The second experimental part, concerns the analysis of dry matter, organic dry matter, capillary suction time and visual parameters: the color and consistency of the sludge. Result shows that every sludge contains organic matter. The highest concentrations of organic compounds and the largest diversity has been observed in the sludge collected in the Water Treatment Plant Raba, reaching even up to 70% of organic compounds in the dry mass of sludge.


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