“STOP: Can You Drink That Water?” Microbiology, Chemistry, & Advocacy in an Inquiry-Based Water Quality Curriculum for 8th Graders

2015 ◽  
Vol 77 (5) ◽  
pp. 369-375
Author(s):  
Alexis Valauri-Orton ◽  
Karen K. Bernd
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Chemical Reactivity ◽  
Water Source ◽  
School Students ◽  
Curricular Development ◽  
The North ◽  
8Th Grade ◽  
8Th Graders ◽  
Chlorine Bleach

For many middle school students, connections between their lives and concepts like chemical reactivity, microbial contamination, and experimental sampling are not obvious. They may also feel that, even if there were connections, understanding the monitoring and quality of natural resources is something for grown-ups and beyond their responsibility. This curriculum highlights connections. Students characterize bacteria in a local untreated water source and investigate the mechanism, effectiveness, and byproducts of chlorine bleach as a water treatment. Working in groups, they use different growth and treatment conditions to characterize samples, thus collectively obtaining a more complete description of the system. The North Carolina 8th Grade Standard Course of Study Objectives were used during curricular development, and alignment to Next Generation Science Standards performance expectations is provided. Teacher-guided discussions, demonstrations, experimentation, and database investigation engage students as they develop informed and critical opinions about water quality and water treatment methods. The final activity connects scientific investigation to advocacy and civic engagement.

scholarly journals Assessment of the Effluents of Basra City Main Water Treatment Plants for Drinking and Irrigation Purposes

Water ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3334
Author(s):  
Suhad Almuktar ◽  
Ahmed Naseh Ahmed Hamdan ◽  
Miklas Scholz
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Management Strategies ◽  
Arabian Gulf ◽  
Water Source ◽  
Raw Water ◽  
Water Contaminants ◽  
Water Treatment Plants ◽  
Quality Of Water ◽  
To Come

A severe water scarcity challenge is facing Iraq, which is predominantly due to the absence of water management policies, negatively impacting the water quantity and quality provision from the Tigris and Euphrates Rivers. Moreover, these practices have led to the intrusion of the Arabian Gulf salinity wedge into the Shatt Al-Arab River (SAR), which is the main water source for most water treatment plants (WTPs) in Basra city. In addition, the inadequate management and operation for most WTPs is another reason for the deterioration of water quality provided to Basra province. Accordingly, the aim of this study is to evaluate the performance of the main WTP within Basra province and to subsequently make recommendations for decision-makers to come up with new management strategies and policies. The effluents from eight WTPs were selected to study the quality of water supply for Basra city during the period between January 2018 and December 2018. The results showed that all WTPs were inadequate to treat raw water for drinking or irrigation purposes mainly due to the very bad raw water quality provided by the SAR as well as the lack of maintenance for such plants, resulting in very low removal efficiencies for various water contaminants.

scholarly journals AN IMPACT ASSESSMENT OF EFFLUENT FROM THE WATER TREATMENT PLANT PINEDO TO SUSTAIN THE ALBUFERA NATURAL PARK

2019 ◽  
Vol 1 (2) ◽  
pp. 87-94
Author(s):  
Novika Rukka ◽  
Ton van der Linden ◽  
Mathilde de Jongh ◽  
Luytzen Woudstra
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Impact Assessment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Observation Point ◽  
The North ◽  
Natural Park ◽  
Albufera Natural Park

The aim of this research is to elaborate of the impacts on the use of the effluent of the water treatment plant Pinedo in the North of Albufera Natural Park in Valencia, Spain. Interviews and observations were conducted, which together created an Impact Assessment. To be able to see the influence of effluent on the water quality, an observation point in the north was compared to another observation point in the south. Besides that, a boat trip was made to observe the water quality on the lake. The result shows that eutrophication occurs as a cosequence of the wastewater from water treatment. Farmers have no choice and are happy to have a constant source. Fishermen have experienced a disastrous change in the seventies, but now see an improvement of the water quality. Environmentalists are most negative about the effluent inflow. The government understands the concerns and wants a higher quality of the effluent, but they do not have means to improve it. Water treatment plant Pinedo recognizes the corncerns either; however, the water quality already meets the requirements. Forecasting the future, everybody is slightly positive. The improvement of the quality of the effluent is a good thing and should carry on.

Изменение качества природной воды источника централизованного водоснабжения при ее транспортировке

2019 ◽  
pp. 43-47
Author(s):  
O. Govorov ◽  
Z. Govorova ◽  
U. Rudich
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Natural Water ◽  
Water Source ◽  
Microbial Count ◽  
Supply Source ◽  
Water Treatment Process ◽  
Water Mains ◽  
Treatment Facilities

Рассмотрены вопросы трансформации качества воды природного источника водоснабжения при ее транспортировке по водоводам большой протяженности от водозабора до площадки водопроводных очистных сооружений и причины, влияющие на изменение качественного состава воды. Приведены результаты исследований изменения качества воды природного водоисточника, характеризующегося малой мутностью, средней цветностью, сезонным развитием фитопланктона и содержанием органических соединений. Установлено, что в отдельные периоды года происходит как улучшение, так и ухудшение качества транспортируемой по водоводам воды по показателям: перманганатная окисляемость, общее микробное число, численность и биомасса фитопланктона в несколько раз, вследствие чего возрастает в несколько раз нагрузка на сооружения по загрязняющим веществам и снижается эффективность процесса водоочистки. Постоянный мониторинг и систематизация данных по изменению качества воды позволят своевременно корректировать режимы и параметры работы водоочистных сооружений, тем самым обеспечивая стабильную эффективность очистки воды до нормативных требований.The issues of the water quality transformation from a natural water supply source during transportation by longdistance water mains from the water intake to the water treatment facilities site and the reasons affecting the changes in the qualitative composition of water are considered. The results of the studies on the changes in the water quality of a natural water source characterized by low turbidity, medium color, seasonal growth of phytoplankton and the concentration of organic compounds are presented. It has been established that in certain periods of the year both the improvement and deterioration of the quality of water transported by water mains by several times occur in terms of the following indicators: permanganate value, total microbial count, phytoplankton count and biomass, resulting in several times increase in the pollution load on the treatment facilities and decrease in the efficiency of the water treatment process. Continuous monitoring and systematization of data on the changes in water quality will make it possible to timely adjust the modes and parameters of water treatment plants, thereby ensuring sustainable water treatment efficiency according to the regulatory requirements.

Fishpond Reconstruction Based on Water Quality Security for the East Route Project of Diverting Water from the South to the North of China—With an Example of Weishan County Shandong Province

2013 ◽  
Vol 448-453 ◽  
pp. 517-520
Author(s):  
Wan Xi Wang ◽  
Jian Qiang Zhu ◽  
Gu Li
Keyword(s):  
Water Quality ◽  
Pollution Control ◽  
Ecological Engineering ◽  
Water Source ◽  
Field Investigation ◽  
Shandong Province ◽  
Water Diversion ◽  
The South ◽  
The North ◽  
Common Problems

Weishan County gets its name for Weishan Lake, also known as Nansi Lakes because it consists of the four major lakes (Small Weishan, Zhaoyang, Dushan and Nanyang). Weishan Lake is an important water source in Shandong Province and one of the main impounded lakes in the East Route Project of Water Diversion from the South to the North. In order to ensure the water quality, the relevant cities and counties of Shandong Province attach great importance to water pollution control around the Weishan Lake. According to field investigation and analysis of present situation of the project area, common problems existed in pond culture along Weishan Lake were found out, meanwhile the targeted solutions for them were given aiming at the transformation of snakehead farming pond by ecological engineering, that focus on an establishment of the demonstration base so as to demonstrate a mode of aquiculture that is environmentally friendly, to enhance ecological health of aquiculture for sankeheaded, and to provide a strong guarantee for the East Route Project of Water Diversion from the South to the North to have a good water quality.

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.

Improvement of Lake Water Quality by using Moving Rapid Water Treatment System

2018 ◽  
Vol 18 (1) ◽  
pp. 107-115 ◽  
Author(s):  
Kwang-Hee Lee ◽  
◽  
Min-Ho Kim ◽  
Nam-Woo An ◽  
Chul-hwi Park
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Lake Water ◽  
Treatment System ◽  
Lake Water Quality ◽  
Water Treatment System

THE READABILITY OF READING TEXTS IN ENGLISH TEXTBOOK FOR GRADE VIII STUDENTS OF SMP NEGERI 1 KABANJAHE 2016/2017

2017 ◽  
Vol 6 (3) ◽  
Author(s):  
Rinaldi Masda Syahputra And Johan Sinulingga
Keyword(s):  
High School ◽  
Elementary School ◽  
High School Students ◽  
School Students ◽  
10Th Grade ◽  
8Th Grade ◽  
English Textbooks ◽  
Readability Formula ◽  
Reading Texts

This research analyzed the readability of reading texts taken from English textbooks for grade VIII students of SMP Negeri 1 Kabanjahe of 2016/2017 entitled English in Focus published by Pusat Perbukuan Departemen Pendidikan Nasional. Being important a textbook as the most used in sources of a class, textbook should be readable and appropriate for the students especially for the reading texts inside it. The goal of this research was to find out how is the readability of those reading texts in the textbook.To describe and investigate the readability, this research used a readability formula measurement called SMOG Grading Formula which is found by G. Harry Mc. Laughlin. The source of the data were 20 reading texts taken randomly from English in Focus textbook.The major findings of the study showed that the readability of 20 reading texts were in the variety level for students within 5th elementary school to the 10th grade high school students level, and it found that 13 of 20 reading texts or about 65% of the data are appropriate for the 8th grade students who are the user of the book. Meanwhile, this research also found reading texts which are not appropriate for the students. There are 3 reading texts are too easy and 4 are too difficult for them. So, 35% reading texts in the data is not appropriate for 8th grade students.

IMPLEMENTASI ALGORITMA K-Modes UNTUK MENENTUKAN STRATEGI MARKETING STMIK BUDI DARMA

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Ewin Karman Nduru ◽  
Efori Buulolo ◽  
Pristiwanto Pristiwanto
Keyword(s):  
High School ◽  
Data Mining ◽  
High School Students ◽  
Marketing Strategy ◽  
Process Data ◽  
School Students ◽  
The North ◽  
The Government ◽  
Using Data ◽  
North Sumatra

Universities or institutions that operate in North Sumatra are very many, therefore, of course, competition in accepting new students is very tight, universities or institutions do certain ways or steps to be able to compete with other campuses in gaining interest from community or high school students who will continue their studies to a higher level. STMIK BUDI DARMA Medan (College of Information and Computer Management), is the first computer high school in Medan which was established on March 1, 1996 and received approval from the government through the Minister of Education and Culture, on July 23, 1996 with operating license number 48 / D / O / 1996, in promoting the campus, the team usually formed a promotion team to various regions in the North Sumatra Region to provide information to the community. Students who have learned in this campus are quite a lot who come from various regions in North Sumatra, from this point the need to process data from students who are active in college to be processed using data mining to achieve a target, one method that can be used in data mining, namely the ¬K-Modes clustering (grouping) algorithm. This method is a grouping of student data that will be a help to campus students in promoting, using the K-Modes algorithm is expected to help and become a reference for marketing in determining the marketing strategy STMIK Budi Darma MedanKeywords: STMIK Budi Darma, Marketing Strategy, K-Modes Algorithm.

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