Cyanobacteria breakthrough: Effects of Limnothrix redekei contamination in an artificial bank filtration on a regional water supply

Harmful Algae ◽  
2018 ◽  
Vol 76 ◽  
pp. 1-10 ◽  
Author(s):  
Adam K. Rose ◽  
Larelle Fabbro ◽  
Susan Kinnear
Keyword(s):  
Water Supply ◽  
Bank Filtration ◽  
Limnothrix Redekei ◽  
Regional Water

Pengaruh Motivasi, Self Awareness Dan Komunikasi terhadap Disiplin Kerja Karyawan di Perusahaan Daerah Air Minum (Pdam) Kabupaten Ponorogo

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Fitriana Fitriana ◽  
Umi Farida ◽  
Tegoeh Hari Abrianto
Keyword(s):  
Regression Analysis ◽  
Data Analysis ◽  
Water Supply ◽  
Regression Coefficient ◽  
Reliability Test ◽  
Self Awareness ◽  
Validity And Reliability ◽  
Communication Variable ◽  
Water Supply Company ◽  
Regional Water

This study aims to determine the effect of motivation, self awareness and communication on the work discipline of employees in the Regional Water Supply Company (PDAM) of Ponorogo Regency. The location of research in Pramuka Street Number 21, Nologaten, Ponorogo Regency. The population in this study was 102 employees. The sample in this study used 50 respondents. Data collection techniques using questionnaires, then tested with validity and reliability test, while the method of data analysis using multiple regression analysis with the help of SPSS and hypothesis testing partially or simultaneously. The results showed that; (1) Motivation partially influences the work discipline of employees in the Regional Water Supply Company (PDAM) of Ponorogo Regency with a regression coefficient of 0.317, t value of 2.903> t table of 2.012 and sig. of 0.006 <0.05, (2) Self Awareness partially influences the work discipline of employees in the Regional Water Supply Company (PDAM) of Ponorogo Regency with the results of the regression coefficient of 0.409, t value of 3.478> t table of 2.012 and sig. of 0.001 <0.05, (3) Communication partially influences the work discipline of employees in the Regional Water Supply Company (PDAM) of Ponorogo Regency with the results of a regression coefficient of 0.310, t value of 2.178> t table of 2.012 and sig. of 0.035 <0.05, (4) Motivation, self awareness and communication simultaneously affect employee work discipline in the Regional Water Supply Company (PDAM) of Ponorogo Regency with the calculated F value of 14.807> F table 2.81 and sig value. of 0,000 <0.05, (5) Self awareness is the most dominant variable affecting the work discipline of employees in the Regional Water Supply Company (PDAM) of Ponorogo Regency with the result of self awareness variable t value of 3.478 is greater than the value of t variable count motivation and communication variables. Furthermore, from the value of sig. the variable self awareness of 0.001 is smaller than the value of sig. motivation variable and communication variable.

Regional Water Supply in Japan: A Study of Lake Biwa

1975 ◽  
Vol 65 (3) ◽  
pp. 311
Author(s):  
Robert D. Robertson
Keyword(s):  
Water Supply ◽  
Lake Biwa ◽  
Regional Water

scholarly journals Multi-Water Source Joint Scheduling Model Using a Refined Water Supply Network: Case Study of Tianjin

Water ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 1580 ◽  
Author(s):  
Shanghong Zhang ◽  
Jiasheng Yang ◽  
Zhongyu Wan ◽  
Yujun Yi
Keyword(s):  
Resource Allocation ◽  
Water Supply ◽  
Water Resource ◽  
Water Distribution ◽  
Distribution Area ◽  
Source Water ◽  
Supply Source ◽  
Water Resource Allocation ◽  
Regional Water

Water shortage problems are increasing in many water-deficient areas. Most of the current research on multi-source combined water supplies depends on an overall generalization of regional water supply systems, which are seldom broken down into the detail required to address specific research objectives. This paper proposes the concept of a water treatment and distribution station (water station), and generalizes the water supply system into three modules: water supply source, water station, and water user. Based on a topological diagram of the water network (supply source–station–user), a refined water resource allocation model was established. The model results can display, in detail, the water supply source, water supply quantity, water distribution engineering, and other information of all users in each water distribution area. This makes it possible to carry out a detailed analysis of the supply and demand of users, and to provide suggestions and theoretical guidance for regional water distribution implementation. Tianjin’s water resource allocation was selected as a case study, and a water resource allocation scheme for a multi-source, combined water supply, was simulated and discussed.

scholarly journals The history and present of public drinking water supply and its regionalisation in Debrecen

2013 ◽  
pp. 147-151
Author(s):  
Sándor Nagy
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Supply ◽  
Public Water Supply ◽  
Considerable Decrease ◽  
The Public ◽  
Public Drinking Water ◽  
History Of ◽  
Sanitation Systems ◽  
Regional Water

The public water supply played a major role in the urbanization of Debrecen city, just like in the case of many other cities. We had plenty of water and so we wasted it. However nowadays we experience a considerable decrease in the level of groundwater which causes an increasing need of energy for pumping. Beside the above mentioned the ecological threat and the decreasing water quality are also major problems. This study attempts to draw attention to the possibilities and the future of the regional water supply, by showing the history of the water supply, the sanitation systems of Debrecen and their present day activities.

scholarly journals Cultural Resources Investigations of the Vista Ridge Regional Water Supply Project in Burleson, Lee, Bastrop, Caldwell, Guadalupe, Comal and Bexar Counties, Texas

2016 ◽  
Author(s):  
Laura Acuna ◽  
Brandon Young ◽  
Rhiana Ward
Keyword(s):  
Water Supply ◽  
Archaeological Sites ◽  
Army Corps ◽  
Cultural Resources ◽  
Army Corps Of Engineers ◽  
Project Area ◽  
Central Texas ◽  
Water Pipeline ◽  
National Historic Preservation Act ◽  
Regional Water

On behalf of VRRSP Consultants, LLC and Central Texas Regional Water Supply Corporation (CTRWSC), SWCA Environmental Consultants (SWCA) conducted cultural resources investigations of the Vista Ridge Regional Water Supply (Vista Ridge) Project in Burleson, Lee, Bastrop, Caldwell, Guadalupe, Comal, and Bexar Counties. The work will involve installation of a 139.45-mile-long, 60-inch-diameter water pipeline from northcentral San Antonio, Bexar County, Texas, to Deanville, Burleson County, Texas. The report details the findings of investigations from June 2015 to December 2015, on the alignment dated December 8, 2015 (December 8th). The Vista Ridge Project is subject to review under Section 106 of the National Historic Preservation Act (54 USC 306108) and its implementing regulations (36 CFR 800), in anticipation of a Nationwide Permit 12 from the U.S. Army Corps of Engineers in accordance with Section 404 of the Clean Water Act. In addition, the work is subject to compliance with the Antiquities Code of Texas under Permit Number 7295, as the Vista Ridge Project will be ultimately owned by a political subdivision of the State of Texas. The cultural resources investigations included a background review and intensive field survey. The background review identified previous investigations, recorded archaeological sites, National Register of Historic Places (NRHP) properties, cemeteries, standing structures, and other known cultural resources within a 0.50-mile radius of the project area. The field investigations conducted from June 2015 through December 2015 assessed all accessible portions of the proposed December 8th alignment as of December 25, 2015. Approximately 101.8 miles of the 139.45-mile alignment has been surveyed. Approximately 24.42 miles were not surveyed based on the results of the background review and extensive disturbances as confirmed by vehicular survey. The remaining 13.23 miles that require survey were either unavailable due to landowner restrictions or part of a newly adopted reroute. SWCA also surveyed additional mileage, which includes rerouted areas that are no longer part of the December 8th alignment. The inventory identified 59 cultural resources, including 52 archaeological sites and seven isolated finds. In addition to newly recorded resources, two previously recorded archaeological sites were revisited, and two cemeteries were documented. Of the 52 newly recorded archaeological sites, seven are recommended for further work or avoidance. Of the two revisited archeological sites, one is recommended for further work or avoidance within the project area. Avoidance is recommended for both documented cemeteries. The resources with undetermined eligibility require additional testing or other avenues of research before SWCA can make a firm recommendation about their eligibility for nomination to the NRHP and designation as State Antiquities Landmarks (SALs). As part of a management strategy, the resources with undetermined eligibility may also be avoided by reroute or boring beneath. The remaining 45 cultural resources are recommended not eligible for inclusion to the NRHP or for designation as SALs and no further cultural resources investigations or avoidance strategies are recommended.

Riverbank filtration for drinking water supply - a proven method, perfect to face today's challenges

2002 ◽  
Vol 2 (5-6) ◽  
pp. 1-8 ◽  
Author(s):  
R. Irmscher ◽  
I. Teermann
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Water Supply ◽  
High Water ◽  
Water Utilities ◽  
Riverbank Filtration ◽  
High Tech ◽  
Special Focus ◽  
Bank Filtration ◽  
Proven Method

Hygiene standards and parasites have been a special focus of drinking water utilities for several years. In this context the development of new, high-tech water treatment methods is often taken into consideration. However, we have been applying riverbank filtration as an inexpensive, natural method in Düsseldorf for over 130 years. Indeed it had been introduced for “hygiene reasons” at the time and, according to our experience, riverbank filtration is well suited to meet these “new” hygiene challenges. We have intensively examined the infiltration of river water into the aquifer. We view this core process as the prerequisite for the sustained function of riverbank filtration. It is closely linked with the retention of turbid matters in the riverbed and the shearing forces on the subsurface. In addition, we have investigated the effectiveness of bank filtration as regards the elimination of microorganisms over recent years. According to these examinations, bacteria are reduced by an average of 3 log orders by bank filtration; individual breakthroughs correlate with high water events. According to our measurements Giardia and Cryptosporidium have been completely eliminated in riverbank passage. The retention of three examined types of viruses was also found to be almost completely accomplished.

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