scholarly journals Limnological features Diwanyia River, Iraq

2004 ◽  
Vol 1 (1) ◽  
pp. 119-124
Author(s):  
Baghdad Science Journal
Keyword(s):  
Carbon Dioxide ◽  
Dissolved Oxygen ◽  
Chlorophyll A ◽  
Fresh Water ◽  
Water Samples ◽  
Total Hardness ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Calcium Magnesium ◽  
Nitrite Nitrate

Monthly water samples from three stations in Diwanya river at Diwanyia city were collected during December 1999 to June 2000. Variables from each stations were determined including ; temperature, pH ,dissolved oxygen, dissolved carbon dioxide , alkalinity ,total hardness, calcium ,magnesium , phosphate, nitrite, nitrate, chlorophyll-a , and total number of phytoplankton .The river considered as fresh water , alkaline ,very hard .The parameters recorded at different values from up and down stream.

Model of Algal Bacterial Clay Wastewater Treatment System

1992 ◽  
Vol 26 (7-8) ◽  
pp. 1697-1706 ◽  
Author(s):  
J. B. Carberry ◽  
R. W. Greene
Keyword(s):  
Carbon Dioxide ◽  
Wastewater Treatment ◽  
Dissolved Oxygen ◽  
Flow Reactor ◽  
Rate Of Change ◽  
System Response ◽  
Bacterial Respiration ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide ◽  
Mechanical Aeration

A computer model is presented for an innovative wastewater treatment process known as the Algae-Bacterial-Clay Treatment (ABCT) system. In this process the photosynthetic production of dissolved oxygen by algae supports the bacterial breakdown of organic matter in wastewater. Clay is added to the plug flow reactor to dampen input BOD variation. The model was developed to gain an improved understanding of transient behavior of dissolved oxygen and pH in the treatment reactor during typical operation. The model consists of five nonlinear ordinary differential equations describing the time rate of change of algae mass, bacterial mass, organic substrate, dissolved oxygen, and dissolved carbon dioxide. A fourth-order Runge-Kutta integration technique was used to predict system response at discrete time steps. The pH variation expected from changes in dissolved carbon dioxide was based upon presumptions that the system is buffered by the carbonic acid system, and that alkalinity does not change appreciably during the course of time. These assumptions were confirmed by experimental results. The model successfully predicted diurnal fluctuations in dissolved oxygen, carbon dioxide, and pH in the ABCT process. The model predicted that algae will supply sufficient oxygen during sunny and partly sunny days to eliminate the need for continuous mechanical aeration. This feature should result in significant cost savings over conventional secondary wastewater treatment schemes. Surplus dissolved oxygen produced by algae during the day should be completely depleted at night due to bacterial respiration. This lack of oxygen, in turn, resulted in reduced substrate utilization and potential effluent discharge violations. Mechanical aeration during the night might be one possible remedial strategy. Despite its dynamic behavior, the ABCT process would be a viable and potentially cost efficient wastewater treatment strategy.

scholarly journals Study of Physiochemical Parameters of Small Lakes in Sangamner, Ahmednagar District of Maharashtra State, India

2020 ◽  
Vol 15 (3) ◽  
pp. 595-600
Author(s):  
Rupendra Vinayak Bhagde ◽  
Dnyaneshwar Ramrao Deshmukh ◽  
Shreyas Sambhajirao Pansambal ◽  
Manish Ramesh Bhoye
Keyword(s):  
Carbon Dioxide ◽  
Water Quality ◽  
Water Resources ◽  
Dissolved Oxygen ◽  
Water Conservation ◽  
Physicochemical Parameters ◽  
Sustainable Use ◽  
Small Lakes ◽  
Dissolved Carbon ◽  
Dissolved Carbon Dioxide

Water resources have great importance for the existence of life. Freshwater resources in the plateau area in Sangamner Taluka of Ahmednagar district are limited. Therefore, there is a need of sustainable use of water resources especially lakes. The physicochemical analysis is necessary to know the water quality. This study aimed at the monitoring of water quality for its sustainable use by assessing the physicochemical parameters of small lakes in the plateau region of Sangamner Taluka. In the present study, the water samples were collected from the spots selected for the study in different seasons. The physicochemical parameters viz. temperature, pH, dissolved oxygen, dissolved Carbon dioxide, alkalinity, hardness and T.D.S. were recorded by using standard methods. The dissolved oxygen was found in the range of 5.1 mg/L to 7.9 mg/L. The dissolved Carbon dioxide was in the range of 32 mg/L to 48 mg/L. The alkalinity was in the range of 120 mg/L to 330 mg/L. The temperature was in the range of 21oC to 32oC. The hardness was in the range of 58 mg/L to 140 mg/L. Seasonal variations in the physicochemical parameters were observed at different spots. Observations in the present study have emphasized the need to raise awareness among the people for water conservation and management.

scholarly journals To Study of The Physico-Chemical Parameters of GIRNA Project Near Panzangaon, Tal- Nandgaon, District- Nashik (M.S.) India

2019 ◽  
pp. 472-479
Author(s):  
Shambharkar Rajesh. M
Keyword(s):  
Total Hardness ◽  
Chemical Parameters ◽  
Dissolved Carbon ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Dissolved Carbon Dioxide ◽  
Calcium Magnesium ◽  
Rain Fall ◽  
One Year

This investigation reveal as the Physico-chemical parameters of Girna project were monitored over period of one year July 2007 to June 2008. The fresh water of the Girna project is mostly used for the drinking and Agricultural purposes. The study of different parameters like Temperature, Rain fall, pH, Turbidity, T.D.S., Dissolved Oxygen, Dissolved carbon dioxide, Total hardness, calcium, Magnesium, and Chloride were well studied and suggest that the quality of water is not polluted.

Impact of Dursban and Abate on Microbial Numbers and Some Chemical Properties of Standing Ponds

1975 ◽  
Vol 10 (1) ◽  
pp. 33-41 ◽  
Author(s):  
J. Butcher ◽  
M. Boyer ◽  
CD. Fowle
Keyword(s):  
Carbon Dioxide ◽  
Active Ingredient ◽  
Algal Blooms ◽  
Chemical Properties ◽  
Total Carbon ◽  
Dissolved Carbon ◽  
Photosynthetic Productivity ◽  
Dissolved Carbon Dioxide ◽  
Microbial Numbers

Abstract Eleven small ponds, lined with polyethylene, were used to assess the consequences of applications of *DursbanR at 0.004, 0.030, 0.100 and 1.000 ppm and AbateR at 0.025 and 0.100 ppm active ingredient. The treated ponds showed a more pronounced long-term increase in pH and dissolved oxygen and decreasing total and dissolved carbon dioxide in comparison with untreated ponds. Algal blooms were of longer duration in treated ponds than in controls. Total photosynthetic productivity was higher in treated ponds but bacterial numbers did not change significantly. Photosynthetic productivity was estimated by following the changes in total carbon dioxide.

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