scholarly journals Linking Land Use Metrics Measured in Aquatic–Terrestrial Interfaces to Water Quality of Reservoir-Based Water Sources in Eastern China

2019 ◽  
Vol 11 (18) ◽  
pp. 4860 ◽  
Author(s):  
Lilian Ding ◽  
Qiyao Li ◽  
Jianjun Tang ◽  
Jiangfei Wang ◽  
Xin Chen
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Eastern China ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Water Sources ◽  
Self Organizing Map ◽  
Water Safety ◽  
Construction Land

The effects of anthropogenic land use on the water quality of reservoir-based water sources are understudied. We trained a self-organizing map (SOM) to measure the spatial pattern of nutrients over the course of a year in 61 reservoirs located in eastern China. In the linear regression model and one-way analyses of variance, we found that water quality was influenced by period of the year (flood, low, and normal periods based on rainfall conditions) and reservoir altitude (plains vs. mountains). Our results indicated that land use metrics measured in aquatic–terrestrial interfaces significantly influenced the water quality of reservoirs. The land use intensity (LUI) and the proportion of construction land had a positive correlation with ammonia nitrogen (NH3-N) and chemical oxygen demand (CODMn) concentrations, and redundancy analysis indicated that the percent of landscape (PLAND) represented by construction land was positively correlated with CODMn, NH3-N, total phosphorus (TP), and total nitrogen (TN) concentrations. The proportion of cropland was not correlated with any water quality property except for CODMn concentration. The total explained variance for water quality was highest when the scale was large (the area defined by a 1500 m radius around the reservoir), indicating that management which ensures water safety should be carried out at this scale.

scholarly journals LAND USE IMPACT ON THE WATER QUALITY OF LIWAGU RIVER, SABAH

2020 ◽  
Vol 5 (19) ◽  
pp. 118-133
Author(s):  
Mohmadisa Hashim ◽  
Erna Zuryena Ramli ◽  
Dewi Liesnoor Setyowati ◽  
Nasir Nayan ◽  
Zahid Mat Said ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Local Population ◽  
Oxygen Demand ◽  
Water Source ◽  
River Pollution ◽  
Ammonia Nitrogen ◽  
Quality Parameters ◽  
The Impact

This article aimed to identify the water quality of the Liwagu River, Sabah, due to the impact of land use activities in the sub-basin area. The Liwagu river provides the main water source for the local population for domestic purposes. Observations on the water quality of the Liwagu river and identification of the types of land use activities along the river were investigated. Assessment of the Liwagu river water quality engaging six parameters, namely biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen (DO), alkaline index (pH), ammonia nitrogen (NH3N) and suspended solids (SS) in five stations that were selected. All of the parameters were analyzed against the Water Quality Index (WQI) standards by the Department of Environment (DOE) Malaysia. Water quality sampling was carried out three times, which were in February, March, and April 2019. The results showed that the average value of WQI in February 2019 was at a good level (Class I), and in March and April, 2019 was at a clean level (Class II). The COD parameter showed values that exceeded the standards set by DOE Malaysia. The decline in water quality parameters was also contributed by tourism, agriculture, settlements, and loging upstream and along the river. In conclusion, the impact of land use activities on the quality of the Liwagu river was still under control and planned in terms of its development. However, monitoring for river pollution should be conducted regularly by various parties as an early step in preventing the degradation of the Liwagu river's water quality since the water source is also used by the nearby villagers as a source for water supply.

Water-Quality Assessment of Lv-Tang River in Zhanjiang, China

2013 ◽  
Vol 295-298 ◽  
pp. 755-758 ◽  
Author(s):  
Ya Yun Liu ◽  
Zhi Hong Li ◽  
Xiao Jian Liang ◽  
Yan Peng Lin ◽  
Rong Hao Wu ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Quality Index ◽  
Quality Index ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Ammonia Nitrogen ◽  
Single Parameter ◽  
Water Quality Parameter ◽  
National Quality

Based on the water quality investigation data of December in 2010, the water environment quality of Lv-tang River in Zhanjiang national urban wetland park was assessed using single water quality parameter model and integrated water quality index model. The results show that the water quality of Lv-tang River is worse than the national quality standards for Grade V. The water is polluted seriously. The main pollutants are total nitrogen (TN), ammonia nitrogen (NH3-N) and chemical oxygen demand CODCr with their average concentrations of 60.49 mg/L, 30.57 mg/L and 227.38mg/L, respectively. The averages of their single parameter pollution index are 30.25 , 19.79 and 8.74. The average of single parameter pollution index of the river is 8.23 which indicated that the river belongs to heavy pollution zone. The integrated water quality index was 22.5 showing that the river belongs to serious pollution zone.

scholarly journals Impact of Partially Treated Wastewater on Downstream Water Quality of Notwane River in Botswana

2018 ◽  
pp. 1-9
Author(s):  
Gilbert K. Gaboutloeloe ◽  
Gugu Molokwe ◽  
Benedict Kayombo
Keyword(s):  
Water Quality ◽  
Pearson Correlation ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Treated Wastewater ◽  
Nitrate N ◽  
River Stretch ◽  
Ph Range ◽  
The Impact

The impact of partially treated wastewater on the water quality of Notwane river stretch in the Gaborone region of Botswana was investigated. Water samples collected at effluent discharge point and three other sampling sites downstream were analyzed for pH, temperature, Biological Oxygen Demand (BOD5), Ammonia-nitrogen (Ammonia-N) and Nitrate-nitrogen (Nitrate-N). Sampling was conducted bi-weekly between February 2013 and April 2013. The ranges of measured parameters were:  pH (7.6-8.5), temperature (22-23ºC), BOD5 (11.2-27.0 mg/l), Ammonia-N (2.4-60.5 mg/l), Nitrate-N (20.6-28.6 mg/l). Analysis of variance, Games-Howel multiple comparisons and Pearson correlation were used to separate variable means. The results signal river non-point pollution due to runoff inflow of organics mainly from land use and domestic waste dumping by nearby dwellings. Temperature, BOD5, and pH range values were all within the Botswana Bureau of Standards (BOBS) limit while the maximum Ammonia-N and Nitrate-N were above BOBS limit by 50.5 mg/l and 6.6 mg/l, respectively. Regulations on indiscriminate waste dumping and discharge standards adherence should be enforced.

scholarly journals Land use and its impacts on the water quality of the Cachoeirinha Invernada Watershed, Guarulhos (SP)

2018 ◽  
Vol 13 (1) ◽  
pp. 1 ◽  
Author(s):  
Dhisney Gonçalves de Oliveira ◽  
Reinaldo Romero Vargas ◽  
Antonio Roberto Saad ◽  
Regina De Oliveira Moraes Arruda ◽  
Fabrício Bau Dalmas ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Waste Treatment ◽  
Oxygen Demand ◽  
Trophic State Index ◽  
Microbiological Analysis ◽  
Urban Centers ◽  
E Coli ◽  
Quality Of Water

The urbanization process through which large urban centers have been passing has drastically affected the availability and especially the quality of water. The Cachoeirinha Invernada Watershed (CIW), located in the municipality of Guarulhos (State of São Paulo, Brazil), includes areas with different land use classes. This paper aims to correlate the spatial and temporal effects of land use and land cover on the water quality of the Cachoeirinha Invernada Watershed. In a period of 12 months and at six sampling points along the watershed, the physicochemical parameters temperature (T), pH, turbidity (TU), total solids (TS), electrical conductivity (EC), total phosphorus (TP), biochemical oxygen demand (BOD), as well as microbiological analysis (E. coli) were measured. Water quality was assessed using a modified version (WQIM) of the Water Quality Index (WQI) and the Trophic State Index (TSI). The areas surrounded by urban development presented a marked worsening in water quality, with the downstream point most affected and ranked as ‘POOR’. From the evaluated parameters, what contributed most to water quality degradation of the Cachoeirinha Invernada Watershed (CIW) was E. coli, followed by BOD, and TP, all parameters related to the presence of sewage in the water. The need for the construction of sewerage and waste treatment, protection and recovery of riparian forests, and environmental education regarding waste disposal are necessary to significantly improve the environmental quality of the Cachoeirinha Invernada Watershed.

Water Quality Monitoring, Early Warning and Identification of Risk Sources of South Lake Central Ecological Park in Tangshan City

2013 ◽  
Vol 746 ◽  
pp. 147-151 ◽  
Author(s):  
Jun Li ◽  
Jun Wang Tong ◽  
Shou Fang Jiang ◽  
Liu Nan ◽  
Shao Jia Wang ◽  
...  
Keyword(s):  
Water Quality ◽  
Nitrate Nitrogen ◽  
Oxygen Demand ◽  
Pollution Index ◽  
Ammonia Nitrogen ◽  
National Standards ◽  
Polluted Water ◽  
Clean Water ◽  
Sample Points

Objectives To assess the current eutrophication and heavy metal pollution condition of South Lake by monitoring the water quality of South Lake Central Ecological Park in Tangshan city and to provide basic information and science basis for the continuity environmental monitoring and further treatment. Methods The water samples in South Lake were collected during 10th-12st May, 2011. Samples of surface water in Xixingchi, Yanglongshui, and Qingtianjing were determined temperature, pH, turbidity, dissolved oxygen (DO), biochemical oxygen demand (COD), biological oxygen demand (BOD520), total phosphorus (TP), ammonia nitrogen, nitrite nitrogen, nitrate nitrogen, Hg, As, Cr, Cu, Zn, Ni, Pb, Cd and so on. Single water quality index and the integrated pollution index were calculated to assess water quality of sampling point. Results The sense character of all sample points did not accord with national standards.The BOD520 of Xixingchi, West Yanglongshui, North Yanglongshui and the four sampling points of Qingtianjing were more than national standards. The TP, ammonia nitrogen and nitrate nitrogen of Qingtianjings sample points exceeded national standards. Indicatorss of other sample were accord with national standards. Xixingchi, whichs comprehensive pollution index was 0.27, belonged to clean water. Yanglongshui, which`s comprehensive pollution index was 0.22, belonged to clean water too. Qingtianjing, whichs comprehensive pollution index was 1.99, belonged to polluted waters. Conclusions Xixingchi and Yanglongshui belongs to clean water. Qingtianjing belongs polluted water. The TP, ammonia nitrogen and nitrate nitrogen of Qingtianjings four sample points exceeded national standards. The severity of the pollution is: Qingtianjing>Yanglongshui>Xixingchi.

scholarly journals Trend Of Water Quality Status In Kelantan River Downstream, Peninsular Malaysia

2020 ◽  
Vol 16 (3) ◽  
pp. 178
Author(s):  
Arniza Fitri ◽  
Khairul Nizam Abdul Maulud ◽  
Dian Pratiwi ◽  
Arlina Phelia ◽  
Farli Rossi ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Water Samples ◽  
Human Activities ◽  
Oxygen Demand ◽  
Quality Parameters ◽  
Peninsular Malaysia ◽  
Water Quality Status ◽  
Quality Status

The issues of freshwater pollutions and the high demand of clean freshwater for daily human activities have forced developing countries such as Malaysia to continuously monitor the quality of the freshwater. The present study objective is to present the trend of water quality status in the Kelantan River downstream, Peninsular Malaysia from 2005 to 2018. Water samples were collected during dry and monsoon seasons from a sampling station located at downstream of the Kelantan River. Water quality parameters such as temperature, pH and dissolved oxygen (DO) were measured in situ while other parameters were analysed in the laboratory based on retrieved water samples. Water quality status was determined based on National Water Quality Standard (NWQS) for River in Malaysia by calculating the water quality index (WQI) according to the concentration of six water quality parameters involving pH, dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD), suspended solids (TSS) and Ammonia Nitrogen (AN). The results showed that Kelantan River had good water quality during the dry season classified in Class II at 2005. The water quality was found to be slightly lower during the monsoon season in year 2006. In addition, increasing the number of construction, human activities in the land use areas, land use changes and the sewage water from domestic, industrial, wet market and food outlets in the Kelantan State have declined the water quality in Kelantan River from Class II (in 2005) to Class III (in 2010 and 2011) and to become Class IV in 2017 to 2018. The results of the present study are expected to give valuable information for the water managers in order to deal with better strategies in controlling the quality of freshwater at the Kelantan River and minimize the incidence of pollution-oriented problems, thus the water can be utilized for various water uses with appropriate quality.

Analyzing of water quality at Ooty for drinking purpose

2021 ◽  
Vol 2 (2) ◽  
pp. 091-099
Author(s):  
Gandhimathi A ◽  
Naresh K
Keyword(s):  
Water Quality ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Summer Season ◽  
Total Hardness ◽  
Quality Of Water ◽  
Sample Water ◽  
Very High ◽  
Drinking Purpose

Analyzing of water quality at Ooty town and to provide clean and safe water. The water quality is analyzed and tabulated in this paper. So we are able to know the quality of water available in the sample taken. The water analyzed about the chemical, physical and biological characteristics of water. It is used to measure the appearance of sample water for the need of living. Water samples are collected from the open well (Latitude and longitude coordinates are 11.410000, 76.699997). The samples were tested for parameters like pH, turbidity, total hardness, fluoride, dissolved oxygen, ammonia nitrogen, chemical oxygen demand, acidity, and alkalinity. The values which are obtained from each parameter were compared with the Indian Standards: 10500 (Drinking water specifications). During the summer season the water demand is very high hence from the result the water was found to be safe for drinking.

Temporal variations in water quality of farm dams: impacts of land use and water sources

2004 ◽  
Vol 70 (2) ◽  
pp. 151-175 ◽  
Author(s):  
M.A. Brainwood ◽  
S. Burgin ◽  
B. Maheshwari
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Temporal Variations ◽  
Water Sources

scholarly journals A Qualidade da Água da Bacia do Rio Capivara, Manancial de Abastecimento do Município de São João -PR (Water Quality in the Basin of River Capivara, Source of Supply of the Municipality of São João-PR)

2015 ◽  
Vol 8 (1) ◽  
pp. 081
Author(s):  
Julio Caetano Tomazoni ◽  
Marilucia Cyrino Rodrigues ◽  
Elisete Guimarães
Keyword(s):  
Water Quality ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Animal Waste ◽  
Raw Water ◽  
Water Abstraction ◽  
Normal Limits ◽  
Southwest Region ◽  
Nitrite Nitrate

Este estudo foi desenvolvido na bacia do Rio Capivara com área de 9.432,6300 ha e Perímetro de 50,78km, localizada geograficamente nos Municípios de São João, Chopinzinho e Saudades do Iguaçu, região Sudoeste do Estado do Paraná. Na pesquisa, foram utilizados conforme a Resolução 357/05 do CONAMA, os valores e padrões de qualidade para captação de água bruta em manancial classe 3, que é a condição do Rio Capivara. Foram considerados os seguintes parâmetros: Potencial Hidrogênio (pH), Fósforo, Nitrogênio Amoniacal, Demanda Bioquímica de Oxigênio(DBO), Nitrito, Nitrato,Coliformes Termotolerantes e análises cromatográficas para agrotóxicos. Em relação à qualidade da água da bacia, os dados utilizados neste trabalho comprovaram a incidência de resíduos de agroquímicos e dejetos de animais, porém não houve ocorrência que motivasse ação especifica, exceto quando ocorreu com o inseticida carbaril. Os resultados mostraram valores próximos ao permitido pela Resolução do Conama 357/05 e nessas condições a captação de água bruta está operando dentro da normalidade.   ABSTRACT The study was developed in the Capivara River basin with an area of 9432.63 ha and perimeter of 50.78 km, located in the municipalities of São João, Chopinzinho and Saudades do Iguaçu, Paraná State Southwest region. According to the Resolution No357/05 of CONAMA, were used values and quality standards for raw water abstraction in Class 3 source, which is the condition of Rio Capivara. The following parameters were considered: potential hydrogen (pH), phosphorus, ammonia nitrogen, biochemical oxygen demand (BOD), nitrite, Nitrate, thermos-tolerant coliforms and chromatographic to pesticide compounds. Regarding the quality of the water of the basin, the data used in this study proved the incidence of residues of pesticides and animal waste, but there were no events that motivate specific action, except when was used thecarbaryl insecticide. The results showed values close to the permitted by Resolution CONAMA No357/05 and, under these conditions, the raw water intake works within normal limits. Keywords: Water quality, Source of water supply, Watershed.   

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