The State and Origin of River Water Composition in Greece

2016 ◽  
pp. 97-127 ◽  
Author(s):  
Nikos Skoulikidis
Keyword(s):  
River Water ◽  
The State ◽  
Water Composition

Regional Variations of River Water Composition Resulting From Halite Solution, Mackenzie River Drainage Basin, Canada

1969 ◽  
Vol 5 (6) ◽  
pp. 1395-1403 ◽  
Author(s):  
Brian Hitchon ◽  
A. A. Levinson ◽  
S. W. Reeder
Keyword(s):  
River Water ◽  
Drainage Basin ◽  
Regional Variations ◽  
River Drainage ◽  
Water Composition ◽  
River Drainage Basin ◽  
Mackenzie River

In-process tests of river water conditioning for domestic and drinking water supply in the city of Kurgan

2021 ◽  
pp. 52-59
Author(s):  
А.В. Селюков ◽  
М.Ю. Семенов ◽  
И.С. Байкова
Keyword(s):  
River Water ◽  
Pilot Plant ◽  
Pilot Scale ◽  
Manganese Concentration ◽  
Winter Period ◽  
Initial Water ◽  
Sand Filter ◽  
Polyaluminum Chloride ◽  
Water Composition ◽  
Ozone Dose

Рассматривается опыт применения озонирования речной воды в лабораторных и пилотных масштабах. Вода реки Тобол – жесткая минерализованная со средними значениями цветности 24 град, содержанием марганца в зимний период более 0,8 мг/дм3. После определения рабочих доз реагентов (коагулянт гидроксохлорид алюминия, флокулянт Praestol 650TR) проводилось пробное озонирование с последующей реагентной обработкой на лабораторном флокуляторе. Для достижения норматива по содержанию марганца в речной воде 0,1 мг/дм3 потребовались высокие дозы озона – от 35 мг/дм3. Подщелачивание исходной воды до рН 9 позволило снизить дозу озона до 23 мг/дм3. Снижение цветности до 15 град происходит при дозах озона 6–7 мг/дм3. Очистка речной воды на пилотной установке производительностью 50 л/ч проводилась по полной технологической схеме (озонирование, обработка коагулянтом и флокулянтом, отстаивание, фильтрование через песчаный фильтр, фильтрование через угольный фильтр, опреснение-умягчение обратным осмосом). Доза коагулянта составляла 5 мг/дм3, флокулянта – 0,3 мг/дм3. В стационарном режиме работы пилотной установки при дозе озона 25 мг/дм3 были достигнуты следующие показатели качества фильтрата песчаного фильтра: цветность 5–7 град; марганец 0,05–0,15 мг/дм3; железо общее 0,02–0,03 мг/дм3; алюминий 0,05–0,08 мг/дм3; перманганатная окисляемость 3–4 мг/дм3. Исходя из расчетных показателей состава воды р. Тобол, для концентрации марганца в воде 0,8 мг/дм3теоретическая доза озона составляет ≈ 8 мг/дм3, проектная доза озона может быть принята 10 мг/дм3 (г/м3). The experience of using ozonation of river water on a laboratory and pilot scale is considered. The water of the Tobol River is hard and mineralized with an average color value of 24 degrees, a manganese concentration in the winter period of more than 0.8 mg/dm3. After determining the operational doses of the chemicals (polyaluminum chloride coagulant, Praestol 650TR flocculant), test ozonation was carried out followed by the chemical treatment in a laboratory flocculator. To achieve the standard for manganese concentration in river water of 0.1 mg/dm3, high doses of ozone were required – from 35 mg/dm3. Alkalinization of the initial water to pH 9 provided for reducing the ozone dose to 23 mg/dm3. A decrease in color to 15 degrees occurred at ozone doses of 6–7 mg/dm3. River water purification at a pilot plant with a capacity of 50 l/h was carried out according to the complete process flow scheme (ozonation, treatment with coagulant and flocculant, sedimentation, filtration in a sand filter, filtration in a carbon filter, desalination-softening by reverse osmosis). The coagulant dose was 5 mg/dm3, and that of the flocculant – 0.3 mg/dm3. In the steady run of the pilot plant at an ozone dose of 25 mg/dm3, the following quality indicators of the sand filter filtrate were achieved: color 5–7 degrees; manganese 0.05–0.15 mg/dm3; total iron 0.02–0.03 mg/dm3; aluminum 0.05–0.08 mg/dm3; permanganate index 3–4 mg/dm3. Based on the estimate indicators of the Tobol River water composition related to the manganese concentration in water of 0.8 mg/dm3, the theoretic dose of ozone is ≈ 8 mg/dm3, the design dose of ozone can be assumed as 10 mg/dm3 (g/m3).

scholarly journals End-member river water composition in the acidified Adirondack Region, Northern New York, USA

2014 ◽  
Vol 2 ◽  
pp. 97-118
Author(s):  
Jeffrey R. Chiarenzelli ◽  
Matthew C. Skeels
Keyword(s):  
New York ◽  
River Water ◽  
Water Composition

Preliminary investigation on the use of ion-exchange resins for monitoring river water composition

1993 ◽  
Vol 135 (1-3) ◽  
pp. 27-36 ◽  
Author(s):  
Tony Edwards ◽  
Bob Ferrier ◽  
Ron Harriman
Keyword(s):  
Ion Exchange ◽  
River Water ◽  
Preliminary Investigation ◽  
Ion Exchange Resins ◽  
Water Composition ◽  
Exchange Resins

The Monitoring of Pesticides and Alkylphenols in Selected Rivers in the State of Selan Jor, Malaysia

2004 ◽  
Vol 16 (1) ◽  
pp. 54-63 ◽  
Author(s):  
B.L.L. Tan ◽  
A.M. Mustafa
Keyword(s):  
River Water ◽  
Water Samples ◽  
Endocrine Disrupting Chemicals ◽  
Cost Effective ◽  
The State ◽  
Gas Chromatograph ◽  
Selected Ion Monitoring ◽  
Female Hormone ◽  
Liquid Liquid Extraction ◽  
Endocrine Disrupting

Alkylphenols and most pesticides, especially organochlorine pesticides are endocrine-disrupting chemicals and they usually mimic the female hormone, estrogen. Using these chemicals in our environment would eventually lead us to consume them somehow in the food web. Several rivers in the State of Selangor, Malaysia were selected to monitor the level of alkylphenols and pesticides contamination for several months. The compounds were extracted from the water samples using liquid-liquid extraction method with dichloromethane and ethyl acetate as the extracting solvents. The alkylphenols and pesticides were analyzed by selected ion monitoring (SIM) mode using the quadrapole detector in Shimadzu QP-5000 gas chromatograph-mass spectrometer (GCMS). Recovery of most alkylphenols and pesticides were in the range of 50% to 120%. Trace amounts of the compounds were detected in the river water samples, mainly in the range of parts per trillion. This technique of monitoring the levels of endocrine-disruptors in river water is consistent and cost effective. Asia Pac JPublic Health 2004,- 16(1): 54- 63.

Optimisation of Tunnel Lining

2014 ◽  
Vol 984-985 ◽  
pp. 711-716
Author(s):  
R. Thenmozhi ◽  
J. Umashankar
Keyword(s):  
Drinking Water ◽  
River Water ◽  
Tunnel Lining ◽  
The State ◽  
Irrigation Scheme ◽  
Project Area ◽  
Prone Area ◽  
Long Time ◽  
Drought Prone Area

The project area and it surrounding region has been a drought prone area since quite a long time. The majority of the population in this region lives in villages where agriculture is the main source of income. In order to utilize the river water to the possible extent and distributing the same among all the areas of the state, these projects were proposed. This Lift Irrigation Scheme was proposed in to irrigate an ayacut of 1.23 lakh acres and to supply drinking water to the enroute villages [6].

scholarly journals Occurrence of Antimicrobials in River Water Samples from Rural Region of the State of Rio de Janeiro, Brazil

2016 ◽  
Vol 07 (02) ◽  
pp. 230-241 ◽  
Author(s):  
Mychelle Alves Monteiro ◽  
Bernardete Ferraz Spisso ◽  
Julia Rodrigues Martins Pastor dos Santos ◽  
Rafaela Pinto da Costa ◽  
Rosana Gomes Ferreira ◽  
...  
Keyword(s):  
River Water ◽  
Water Samples ◽  
Rio De Janeiro ◽  
The State ◽  
Rural Region ◽  
River Water Samples

CO2 and sulfuric acid controls of weathering and river water composition

2006 ◽  
Vol 88 (1-3) ◽  
pp. 427-430 ◽  
Author(s):  
A. Lerman ◽  
L. Wu
Keyword(s):  
Sulfuric Acid ◽  
River Water ◽  
Water Composition

scholarly journals PULSE, A Waveform Model for River Isotopic and Chemical Time-series Data

2020 ◽  
Author(s):  
Mohamed Fahmy Hussein ◽  
Kamal Zouari ◽  
Mohamed Anter ◽  
Mariam Nosser
Keyword(s):  
Time Series ◽  
River Water ◽  
Rare Event ◽  
Human Vision ◽  
Series Data ◽  
Data Set ◽  
Isotopic Compositions ◽  
Water Composition ◽  
Nile Water ◽  
Quantitative Definition

Abstract The isotopic compositions, electrical conductivity (EC), and ion concentrations frequently change with time in river water worldwide, on various time scales. Periodicity is also known for precipitation and other aqueous inputs. The time-series follow up of such temporal variations is usually to proceed by many hydrologists. The major purpose is to gain a thorough understanding of the underlying phenomena and to plot the data accurately. However, there is no appropriate formula for the graphic illustration and mathematical expression of such time-dependent fluctuations other than the complicated Fourier Series. Also, the use of the standard trigonometric sinusoidal function is not possible due to constraining the output of the values between +1 and -1. In contrast, the isotopic compositions require negative and positive values on the y-axis corresponding to time on the -x-axis, while the hydrochemical concentrations only admit positive values. These constraints are entirely void in the flexible waveform PULSE model proposed in this work. In this model, we introduce a modified sinusoidal formula that has the exciting capability of freely controlling the graphic waveform, in a highly accommodating way, for plotting the time-series isotopic and hydrochemical pulses in conformity with field observations. Three main parameters, and two optional secondary parameters, are to use in our model, open to modification. The model is to use in ExcelÒ, whose SOLVER built-in macro may give the approximate values for the main parameters. Such values are then to improve to get the waveform best visual fit manually. We applied PULSE on EC, Cl, and d18O values for Nile water, Cairo, and progressively improved the parameters' values as new data was to obtain. The sexagesimal angles are to handle for plotting the sampling dates on the x-axis. The angle that corresponds to one day = 360°/356.24 days year-1 = 0.9856° day-1 = 0.0172 rad day-1. The standard ExcelÒ time and date-models are also to use to assign the time-series sampling dates. The two optional parameters, b and g, are to use only to damp or expand a decayed or stretched future pulses; otherwise, the values of those secondary parameters should be zero. The far parent of our fundamental PULSE formula is a three-parameter flickering medical equation (Sinusoidal Amplitude-modulated Flicker Model) used in the optical-fitness experiments run for testing the human vision adaptation to light luminance, using the appropriate electrophysiological devices. PULSE stands alone in its hydrological category. This model offers a unique quantitative definition for the isotopic and hydrochemical pulses in successive waveforms, with adjustable values for its parameters, in response to the involved variable and the sampling dates. Measurements on Nile water, using daily river water sampling for several years, were to carry out. PULSE revealed its practical merits for an extensive Nile water data set. Such data are for d18O/V-SMOW ‰, EC dS m-1, and Cl mg l-1, PULSE works fine for such a riverine system. This application included a rare event of exceptional runoff suddenly imposed on Cairo Nile water composition by a scarce flash thunderstorm, where unusual waveforms were to assign to the isotopic and chemical trails of such abnormal runoff in the Sahara. Such a rare event was to use to get a backward look to the paleo-hydrology of the Nile water composition in Egypt.

scholarly journals An Approach towards Minimizing Sewage Inflow in Kelo River across Raigarh City

2021 ◽  
Vol 9 (VII) ◽  
pp. 2149-2153
Author(s):  
Ashish Pradhan
Keyword(s):  
River Water ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
The State ◽  
Industrial City ◽  
Treatment Technologies ◽  
Basic Need ◽  
The City

Raigarh is a rapidly growing industrial city situated in the state of Chhattisgarh, spread over an area of 46.54 km2. It is characterized by its rising population, mounting urbanization, and motorization. The population, of the city, is 1,66,460 as per the census year 2011 and it will be increased by 2,90,988 till the year 2035. There will be an increase not only economically but also there will be a rise in population along with infrastructure works so there is a basic need at the construction of a sewage treatment plant with a view of sufficient capacity to treat the sewage. The objectives of this study are to review and evaluate sewage treatment technologies and propose a sewage treatment plant to improve Kelo River water.

Sign in / Sign up

Export Citation Format

Share Document