scholarly journals Effect of water quality on the spatial distribution of charophytes in the Peshawar Valley, Khyber Pakhtunkhwa, Pakistan

2021 ◽  
Vol 50 (4) ◽  
pp. 359-372
Author(s):  
Izaz Khuram ◽  
Nadeem Ahmad ◽  
Sophia Barinova
Keyword(s):  
Water Quality ◽  
Spatial Distribution ◽  
Abundant Species ◽  
Nitellopsis Obtusa ◽  
Temperature Oxidation ◽  
Chara Vulgaris ◽  
Effect Of Water ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Water Ph

Abstract The presented research was conducted in 2018–2019 in the Peshawar Valley, Pakistan, to study for the first time the effect of water quality on the spatial distribution of charophytes. A total of six taxa of charophytes were found at 41 sites in the Peshawar Valley along the banks of seven rivers, 16 streams and two wetlands: Chara braunii C.C.Gmelin, C. connivens Salzmann ex A. Braun, C. contraria A. Braun ex Kützing, C. globularis Thuiller, C. vulgaris Linnaeus, and Nitellopsis obtusa (Desvaux) J. Groves. Chara vulgaris was the most abundant species, followed by C. globularis, and C. contraria. Water pH, electrical conductivity (EC), total dissolved solids (TDS), salinity and dissolved oxygen (DO) were within the permissible limits for Pakistan, while water temperature, oxidation reduction potential (ORP) and resistivity showed deviations. Canonical Correspondence Analysis (CCA) revealed that DO affected Chara vulgaris, pH and resistivity affected C. braunii, C. connivens and C. globularis, temperature and ORP affected C. contraria and Nitellopsis obtusa. Furthermore, CCA showed that TDS, EC, and salinity had no effect on the spatial distribution of Chara contraria, C. vulgaris and Nitellopsis obtusa. Chara contraria and Nitellopsis obtusa should be protected under VU (Vulnerable) status (IUCN) along with their habitats.

scholarly journals UJI pH DAN KARAKTER FISIK KUALITAS AIR DI PEMUKIMAN PABRIK KELAPA SAWIT (PKS) NAGA SAKTI TAPUNG HILIR

2015 ◽  
Vol 5 (2) ◽  
pp. 131-139
Author(s):  
Endang Susi Lestari ◽  
Shabri Putra Wirman ◽  
Noni Febriani ◽  
Aji Suroso
Keyword(s):  
Water Quality ◽  
Physical Parameters ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Quality Testing ◽  
Shallow Wells ◽  
Water Ph ◽  
Palm Oil Mill ◽  
The Republic ◽  
Artesian Wells

Water is the source of life for all living beings on this earth. Some sources of water for daily needs comes from shallow wells, artesian wells, springs, surface water and rain water collection. The Naga Sakti cottage settlements is one of the settlements adjacent to the Palm Oil Mill (POM) in the district of Lower Tapung Riau Kampar district, and the location of settlements in the area of oil palm plantations. Water produced from wells on the settlement sometimes colored and taste. therefore necessary to test the water pH and physical to determine whether the water in the wells meet the Ministry of Health of the Republic of Indonesia Number: 416/MENKES/PER/IX/1990 about water quality requirements with a pH test and physical parameters that include viscosity, Total Dissolved solids (TDS), Density, conductivity, Oxidation Reduction Potential (ORP), resistivity, salinity, and taste test. Water quality testing was conducted at a radius of 4 km to 8 km from the MCC. From the results of the pH test has been done, there are three that are close to the standard radius PERMENKES ie a radius of 4, 5 and 6 miles. As for the 8 km radius pH values far below the standard Permenkes at pH test. Then to test all the physical radius PERMENKES already meet the standards , in the form of test viscosity, density, ORP, TDS, salinity, conductivity, resistivit , and flavor .

scholarly journals SOFTWARE FOR CALCULATING A WATER QUALITY INDICATOR SPECIFIC TO THE AMAZON REGION

2021 ◽  
Vol 9 (3) ◽  
pp. 248-261
Author(s):  
A. M. F. de Souza ◽  
S. F. P. Pereira ◽  
L. P. Santos ◽  
C. S. e Silva ◽  
R. M. Rocha ◽  
...  
Keyword(s):  
Water Quality ◽  
Quality Indicator ◽  
Quality Parameters ◽  
Web Interface ◽  
Natural Ecosystems ◽  
Water Quality Indicator ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential

The quality of the water in the Amazon's reservoirs is of fundamental importance for natural ecosystems, biota, and for the region's population. Maintaining the water quality involves long-term monitoring programs established by the requirements of Brazilian legislation. A web interface may facilitate the use of monitoring results routinely, which allows periodic insertion of previously selected water quality parameters results, to finally provide a simple and direct way to evaluate the water quality. The general objective of this study was to develop a software based on a water quality indicator (WQI) system considering chemical, physical-chemical, and biological parameters evaluated in four seasonal periods in Samuel dam. Multivariate analysis was used to select 10 significant variables (oxidation-reduction potential, dissolved oxygen, total dissolved solids, chlorophyll a, phosphate, Ba, Ca, Fe, Na, and Sn). The web software added innovation to the project, enabling to storage of data from analysis of field-collected samples in an organized and safe way in a database, in addition to speeding up the calculation of the WQI, making it possible to classify the water quality more quickly and accurately.

scholarly journals Water Quality and Microbial Community Changes in an Urban River after Micro-Nano Bubble Technology in Situ Treatment

Water ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 66 ◽  
Author(s):  
Yifei Wu ◽  
Hui Lin ◽  
Weizhao Yin ◽  
Sicheng Shao ◽  
Sihao Lv ◽  
...  
Keyword(s):  
Water Quality ◽  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Dominant Bacteria

Currently, black-odor river has received great attention in China. In this study, the micro-nano bubble technology (MBT) was used to mitigate the water pollution rapidly and continuously by increasing the concentration of dissolved oxygen (DO) in water. During treatment, the concentration of DO increased from 0.60 mg/L to over 5.00 mg/L, and the oxidation reduction potential (ORP) also changed from a negative value to over 100.00 mV after only five days aeration. High throughput pyrosequencing technology was employed to identify the microbial community structure. At genus level, the dominant bacteria were anaerobic and nutrient-loving microbes (e.g., Arcobacter sp., Azonexus sp., and Citrobacter sp.) before, and the relative abundances of aerobic and functional microbes (e.g., Perlucidibaca sp., Pseudarcicella sp., Rhodoluna sp., and Sediminibacterium sp.) were increased after treatment. Meanwhile, the water quality was significantly improved with about 50% removal ratios of chemical oxygen demand (CODCr) and ammonia nitrogen (NH4+-N). Canonical correspondence analysis (CCA) results showed that microbial community structure shaped by COD, DO, NH4+-N, and TP, CCA1 and CCA2 explained 41.94% and 24.56% of total variances, respectively. Overall, the MBT could improve the water quality of urban black-odor river by raising the DO and activate the aerobic microbes.

scholarly journals On the role of operational dynamics in biogeochemical efficiency of a soil aquifer treatment system

2020 ◽  
Vol 24 (1) ◽  
pp. 417-426 ◽  
Author(s):  
Shany Ben Moshe ◽  
Noam Weisbrod ◽  
Felix Barquero ◽  
Jana Sallwey ◽  
Ofri Orgad ◽  
...  
Keyword(s):  
Water Quality ◽  
Large Scale ◽  
Field Measurements ◽  
Treated Wastewater ◽  
Soil Aquifer Treatment ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Flooding And Drying ◽  
Promising Solution ◽  
Sustainable Irrigation

Abstract. Sustainable irrigation with treated wastewater (TWW) is a promising solution for water scarcity in arid and semi-arid regions. Soil aquifer treatment (SAT) provides a solution for both the need for tertiary treatment and seasonal storage of wastewater. Stresses over land use and the need to control the obtained water quality makes the optimization of SAT of great importance. This study looks into the influence of SAT systems' operational dynamics (i.e., flooding and drying periods) as well as some aspects of the inflow biochemical composition on their biogeochemical state and the ultimate outflow quality. A series of four long-column experiments was conducted, aiming to examine the effect of different flooding/drying period ratios on dissolved oxygen (DO) concentrations, oxidation–reduction potential (ORP) and outflow composition. Flooding periods were kept constant at 60 min for all experiments while drying periods (DPs) were 2.5 and 4 times the duration of the flooding periods. Our results show that the longer DPs had a significant advantage over the shorter periods in terms of DO concentrations and ORP in the upper parts of the column as well as in the deeper parts, which indicates that larger volumes of the profile were able to maintain aerobic conditions. DO concentrations in the deeper parts of the column stabilized at ∼3–4 mg L−1 for the longer DPs compared to ∼1–2 mg L−1 for the shorter DPs. This advantage was also evident in outflow composition that showed significantly lower concentrations of NH4+-N, dissolved organic carbon (DOC) and total Kjeldahl nitrogen (TKN) for the longer DPs (∼0.03, ∼1.65 and ∼0.62 mg L−1 respectively) compared to the shorter DPs (∼0.5, ∼4.4 and ∼3.8 mg L−1, respectively). Comparing experimental ORP values in response to different DPs to field measurements obtained in one of the SAT ponds of the SHAFDAN, Israel, we found that despite the large-scale differences between the experimental 1-D system and the field 3-D conditions, ORP trends in response to changes in DP, qualitatively match. We conclude that longer DP not only ensure oxidizing conditions close to the surface, but also enlarge the active (oxidizing) region of the SAT. While those results still need to be verified at full scale, they suggest that SAT can be treated as a pseudo-reactor that to a great extent could be manipulated hydraulically to achieve the desired water quality while increasing the recharge volumes.

Monitoring Mortality of Pythium Zoospores in Chlorinated Water Using Oxidation Reduction Potential

2008 ◽  
Vol 9 (1) ◽  
pp. 9 ◽  
Author(s):  
Jillian M. Lang ◽  
Brittany Rebits ◽  
Steven E. Newman ◽  
Ned Tisserat
Keyword(s):  
Reduction Potential ◽  
Production Systems ◽  
Water Source ◽  
Chlorine Concentration ◽  
Initial Water ◽  
Greenhouse Production ◽  
Real Time Measurement ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Water Ph

Pythium species are frequently recovered from recycled irrigation water in greenhouse production systems and may cause damping off and root rot if the water is not disinfested properly. Chlorination is often employed as a disinfesting agent, but can be difficult to monitor accurately because its activity is pH-dependent. Oxidation reduction potential (ORP) is a reliable, real-time measurement of the oxidizing potential of a chlorine solution. We exposed zoospores of Pythium aphanidermatum and P. dissotocum municipal water where the ORP was increased by adding 0.125, 0.5, and 2 mg/liter chlorine (pH 7.6 to 8.1) or to the same water source where the pH was lowered to 6.0 prior to the addition of chlorine, resulting in a final pH of 6 to 7.3. Some zoospores of P. aphanidermatum and P. dissotocum survived treatment to the highest chlorine concentration for 4 min in water where pH was not lowered. When the water pH was lowered to 6.0 prior to chlorine addition, 100% of the P. aphanidermatum zoospores were killed after 0.5 min exposure to 0.5 mg/liter chlorine, where ORP ranged from 748 to 790 mV and pH 6.3. Lowering the initial water pH improved disinfestation of P. dissotocum zoospores at the highest chlorine concentration tested and a mean ORP of 790 mV. Accepted for publication 7 July 2008. Published 22 September 2008.

scholarly journals On the role of operational dynamics in biogeochemical efficiency of a soil aquifer treatment system

2019 ◽  
Author(s):  
Shany Ben Moshe ◽  
Noam Weisbrod ◽  
Felix Barquero ◽  
Jana Sallwey ◽  
Ofri Orgad ◽  
...  
Keyword(s):  
Water Quality ◽  
Field Measurements ◽  
Treated Wastewater ◽  
Soil Aquifer Treatment ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Flooding And Drying ◽  
Promising Solution ◽  
Sustainable Irrigation

Abstract. Sustainable irrigation with treated wastewater (TWW) is a promising solution for water scarcity in arid and semi-arid regions. Soil aquifer treatment (SAT) provides a solution for both the need for tertiary treatment and seasonal storage of wastewater. Stresses over land use and the need to control the obtained water quality makes the optimization of SAT of great importance. This study looks into the influence of SAT systems' operational dynamics (i.e. flooding and drying periods) as well as some aspects of the inflow biochemical composition on their bio-geo-chemical state and the ultimate outflow quality. A series of four long-column experiments was conducted, aiming to examine the effect of different flooding/drying period ratios on dissolved oxygen (DO) concentrations, oxidation-reduction potential (ORP) and outflow composition. Flooding periods were kept constant at 60 minutes for all experiments while drying periods (DP) were 2.5 and 4 times the duration of the flooding periods. Our results show that the longer DP had a significant advantage over the shorter periods in terms of DO concentrations and ORP in the upper parts of the column as well as in the deeper parts, which indicates that larger volumes of the profile were able to maintain aerobic conditions. This advantage was evident also in outflow composition analyses that showed significantly lower concentrations of DOC, TKN and ammonium in the outflow for the longer DP. Comparing experimental ORP values in response to different DP to field measurements obtained in one of the SAT ponds of the SHAFDAN, Israel, we found that despite the major scale differences between the experimental 1D system and the field 3D conditions, ORP trends in response to changes in DP, qualitatively match. We conclude that longer DP not only ensure oxidizing conditions close to the surface, but also enlarge the active (oxidizing) region of the SAT. While those results still need to be verified in full scale, they suggest that SAT can be treated as a pseudo-reactor that to a great extent could be manipulated hydraulically to achieve the desired water quality while increasing the recharge volumes.

scholarly journals Smart Water Quality Monitoring System Design and KPIs Analysis: Case Sites of Fiji Surface Water

2019 ◽  
Vol 11 (24) ◽  
pp. 7110 ◽  
Author(s):  
K. A. Mamun ◽  
F. R. Islam ◽  
R. Haque ◽  
M. G. M. Khan ◽  
A. N. Prasad ◽  
...  
Keyword(s):  
Water Quality ◽  
Real Time ◽  
Monitoring System ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Smart Water ◽  
Oxidation Reduction ◽  
Fiji Islands ◽  
Oxidation Reduction Potential ◽  
Framework System

Over recent years, waters in and around Fiji has increasingly succumbed to a reasonable level of contamination. Water quality is defined with set of standards that clearly state the parameters of different properties in water. These standards are different at various geographic locations. The specific quantitative values of these parameters for the Fiji Islands are established by the Fiji National Drinking Water Quality Standards (FNDWQS). Fiji is geographically located in the vast Pacific Ocean, and requires a data collection framework for different water parameters to monitor water quality. The GIS framework system can effectively solve this continuously in real-time. With the end goal being to quantify different parameters; four (04) key performance indicators (KPI) are identified: Temperature, potential of hydrogen (pH), Oxidation Reduction Potential (ORP), and Conductivity. This paper presents a Smart Water Quality Monitoring System (SWQMS) which has been developed and deployed in five (05) Fijian locations (nodes) for the aforementioned KPIs measurement. The SWQMS interfaced with GIS and were powered using solar based Renewable Energy Source (REs). Finally, obtained data were tested and analyzed using statistical methods and verified comparing with the FNDWQS. The findings demonstrated that the system is capable of delivering an accurate and consistent measurement of water quality in real-time. Hence SWQMS could be a smart choice for various Pacific Island Countries (PICs) to use to monitor the water quality and in turn develop sustainable cities and societies.

scholarly journals Experimental investigation of water quality responses to inorganic pollutants for the establishment of a contamination warning system

2019 ◽  
Vol 19 (7) ◽  
pp. 1965-1977
Author(s):  
Sukmin Yoon ◽  
Seong-Su Kim ◽  
No-Suk Park
Keyword(s):  
Water Quality ◽  
Tap Water ◽  
Pure Water ◽  
Warning System ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Residual Chlorine ◽  
Inorganic Pollutants ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential

Abstract In this study, batch and simulated pipeline experiments were conducted to investigate the response of water quality parameters (pH, conductivity, residual chlorine, turbidity, total organic carbon, UV 254, and oxidation reduction potential (ORP)) to various concentrations of four inorganic pollutants (Cd, Cr, Mn, and Pb). In addition, the possibility of detecting incidents of contamination in the actual water supply system was evaluated by deriving the response intensities of each factor to the concentrations of the pollutants. As a result, pH and ORP were identified as the major water quality parameters responsive to the four inorganic pollutants in this study. The responses were more intense (more sensitive) in pure water than in tap water. The results of the batch and simulated pipeline experiments for tap water showed almost identical tendencies, except for the second level of Mn injection (concentration 0.5 mg/L).

scholarly journals Evaluasi Kondisi Lingkungan Akuakultur Pada DAS Tondano Di Kelurahan Ternate Baru Kota Manado

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Dolvinus Wakman ◽  
Suzanne L Undap ◽  
Indra Salindeho
Keyword(s):  
Water Quality ◽  
Quality Standard ◽  
Quality Parameters ◽  
Quality Analysis ◽  
Temperature Conductivity ◽  
Oxidation Reduction ◽  
Oxidation Reduction Potential ◽  
Quality Water ◽  
Physical And Chemical

In this study, we evaluated the current condition of the environmental conditions of aquaculture on watershed Tondano River in terms of physical and chemical parameters. Determination of sampling points at each station is placed vertically at three predetermined points from the brigde toward the front of the aquaculture, the distance between one point to the next point was ± 50 m; whereas for the analysis of water quality parameters was done using an HORIBA water quality meters type U-536. Determination points were done by purposive sampling which refers to the physiographic location wherever possible in order to represent or describe these waters. The research was carried out for 3 weeks and was done in 3 stages, morning, afternoon and evening. For direct measurement (in situ) was performed once a week at the three points which included parameters pH, temperature, conductivity, DO, Oxidation reduction potential, turbidity, TDS, depth and GPS. Generally, the result of water quality analysis at the aquaculture still in the water quality standard PP No.82 of 2001. Keywords: Evaluation, water quality, water Lake Tondano, Aquaculture

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