scholarly journals Ecological restoration and effect investigation of a river wetland in a semi-arid region, China

2015 ◽  
Vol 368 ◽  
pp. 417-423
Author(s):  
S. Xu ◽  
X. Jiang ◽  
Y. Liu ◽  
Y. Fu ◽  
Q. Zhao
Keyword(s):  
Water Quality ◽  
Economic Value ◽  
Level Control ◽  
Wetland Ecosystems ◽  
Restoration Techniques ◽  
Semi Arid Region ◽  
Ecological Methods ◽  
Regional Water ◽  
Better Than

Abstract. River wetlands are heavily impacted by human intervention. The degradation and loss of river wetlands has made the restoration of river ecosystems a top priority. How to rehabilitate rivers and their services has been a research focus. The main goal of it is to restore the river wetland ecosystems with ecological methods. The Gudong River was selected as a study site in Chaoyang city in this study. Based on the analysis of interference factors in the river wetland degradation, a set of restoration techniques were proposed and designed for regional water level control, including submerged dikes, ecological embankments, revegetation and dredging. The restoration engineering has produced good results in water quality, eco-environment, and landscape. Monthly reports of the Daling River show that the water quality of Gudong River was better than Grade III in April 2013 compared with Grade V in May 2012. The economic benefit after restoration construction is 1.71 million RMB per year, about 1.89 times that before. The ratio of economic value, social value and eco-environmental value is 1:4:23.

scholarly journals Agihan Kualitas Air Kali Surabaya Berdasarkan Perbedaan Penggunaan Lahan

2019 ◽  
Vol 4 (1) ◽  
pp. 426
Author(s):  
Yulfiah Yulfiah ◽  
Ferry Suzantho ◽  
Maritha Nilam Kusuma
Keyword(s):  
Water Quality ◽  
Land Use ◽  
River Water ◽  
Damage Identification ◽  
Water Utility ◽  
Left And Right ◽  
Downstream Area ◽  
Regional Water ◽  
Better Than

<p>Surabaya River is very beneficial to Surabaya people as its water becomes the  main source of PDAM (Perusahaan Daerah Air Minum of Regional Water Utility<br />Company). The existing indications on pollution in the flow of Surabaya River due to various activities at its riverbank must not be ignored. Therefore, a study on identifying the distribution of water quality of Surabaya River is required so as to be a reference for formulating control actions to river damage. Identification on water quality distribution was carried out based on the differences of land-use around the left and right sides of river. The research involved the variables of the qualities of river water and waste water thrown into the river, river characteris-tics, and land-use. The results of research  demonstrated that the upstream water quality of Surabaya River was relatively better than the downstream. This statement was proven by the humans’ activities which were more intensively carried out at the downstream area. Numerous land-uses and great number of people living at the riverbank became the phenomena  increasing pressures toward the decreasing quality of river water.</p>

Impacts of inter-basin water transfer on the water quality of receiving reservoirs in a tropical semi-arid region

Hydrobiologia ◽  
2021 ◽  
Author(s):  
José Etham de Lucena Barbosa ◽  
Juliana dos Santos Severiano ◽  
Hérika Cavalcante ◽  
Daniely de Lucena-Silva ◽  
Camila Ferreira Mendes ◽  
...  
Keyword(s):  
Water Quality ◽  
Arid Region ◽  
Water Transfer ◽  
Basin Water ◽  
Semi Arid Region ◽  
Semi Arid

scholarly journals KUALITAS LINGKUNGAN PERAIRAN PANTAI DI SEKITAR LOKASI TAMBAK PERIKANAN KECAMATAN GEROKGAK KABUPATEN BULELENG BALI

2020 ◽  
Vol 14 (2) ◽  
pp. 111
Author(s):  
Beny Mustofa ◽  
I Wayan Arthana ◽  
Ni Luh Watiniasih
Keyword(s):  
Water Quality ◽  
Research Method ◽  
Species Abundance ◽  
Field Research ◽  
Dominant Type ◽  
Blue Green Algae ◽  
Sampling Locations ◽  
Quality Of Waters ◽  
Better Than

The purpose of this study was to determine the quality of waters, community structure of phytoplankton and zooplankton around the fishponds waters of Gerokgak Subdistrict. This research was conducted for 2 months, from May to June 2019. There were three sampling locations, namely in Gerokgak, Patas and Sumberkima Villages. The research method used was field research using quantitative analysis of phytoplankton biological indice. The waters condition around the Gerokgak Subdistrict waters was rather polluted, except for the around Sumberkima Village waters. The quality of the waters of Sumberkima Village was better than that of Gerokgak Village and Patas Village waters. Plankton abundance in the waters of Sumberkima Village was slightly low. The highest abundance of plankton in the waters of Patas Village and the lowest in Gerokgak Village waters. The dominant type of plankton was Cyanophyceae (blue-green algae). Keywords: water quality; plankton; species; abundance.

New challenges for the management of plant nutrients and pathogens in the Waikato River, New Zealand

2001 ◽  
Vol 43 (5) ◽  
pp. 137-144 ◽  
Author(s):  
W. N. Vant
Keyword(s):  
Water Quality ◽  
Algal Blooms ◽  
Diffuse Sources ◽  
Industrial Wastewaters ◽  
The Past ◽  
Green Algal ◽  
New Challenges ◽  
Better Than ◽  
Waikato River

The water quality of the Waikato River is currently much better than it was in the 1950s. Major improvements in the treatment of the sewage and industrial wastewaters which are discharged to the river mean that levels of indicator bacteria in the lower reaches of the river are now many times lower than in the past. Eve so, conditions are still not suitable for swimming, and blue-green algal blooms occur at times. Non-point or diffuse sources of contaminants now dominate the nutrient and pathogens budgets. Progressively-intensifying farming, particularly in lowland areas, is thought to contribute the majority of the contaminants found in the river. Future improvements in water quality will therefore depend more on activities like changes to farming practice – such as retiring the riparian margins of lowland tributaries of the river – than on further advances in wastewater treatment.

Regional water quality of the river Tweed

1997 ◽  
Vol 194-195 ◽  
pp. 173-192 ◽  
Author(s):  
A.J. Robson ◽  
C. Neal
Keyword(s):  
Water Quality ◽  
Regional Water

scholarly journals Water Quality, Survival, and Growth of Red Tilapia, Oreochromis niloticus Cultured In Aquaponics System

2018 ◽  
Vol 47 ◽  
pp. 02006
Author(s):  
Eri Setiadi ◽  
Yohana R. Widyastuti ◽  
Tri Heru Prihadi
Keyword(s):  
Water Quality ◽  
Survival Rate ◽  
Oreochromis Niloticus ◽  
Quality Parameters ◽  
Leaf Production ◽  
Red Tilapia ◽  
Survival And Growth ◽  
Good Price ◽  
Better Than

Red tilapia, Oreochromis niloticus is the main commodity of freshwater fish in Indonesia. Red tilapia have a good price compared to tilapia. The aims of this experiment to determine of survival, growth, and water quality of red tilapia cultured in aquaponic system. The treatment of this experiment, namely A) Red tilapia cultured without aquaponic (control), B) Red tilapia cultured with pakcoy, and C) Red tilapia cultured with caisin. The result showed that the highest of survival rate, weight, and length absolute found at Red tilapia cultured with pakcoy (96.00±1.73%, 32.31±0.74g, and 7.57±0.21 cm) and Caisin (96.00±1.73%, 32.31±0.74g, and 7.57±0.21 cm) than that of without aquaponic (86.67±1.15%, 25.77±1.05g, and 6.43±0.31 cm) (P<0.05). Vegetable leaf production of pakcoy was 6.57±0.16 Kg and Caisin was 6.17±0.11 Kg. The water quality parameters such as DO, TAN, nitrite, and nitrate of Red tilapia cultured using aquaponics was better than that of without aquaponic.

scholarly journals Tingkat dan laju penurunan kualitas air di DAS Brantas Malang Raya

2019 ◽  
Vol 5 (2) ◽  
pp. 185
Author(s):  
Ima Yudha Perwira
Keyword(s):  
Water Quality ◽  
Electrical Conductivity ◽  
Dissolved Oxygen ◽  
Organic Materials ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Decrease Rate ◽  
Better Than

The decrease level of water quality of Brantas Watershed in Malang Raya was observed in this study. The aim of this study was to observe the decrease level of water quality of Brantas Watershed from Batu to Malang City. This study was carried out in the Brantas Watershed of Malang Raya (8 stations: A, B, C, D, E, F, G, and H) for 18,4 Km. The water quality parameters observed in this study were: CODmn (permanganometry), CODcr (CODmn correlation based analysis), dissolved oxygen (DO) (Winkler iodometry), TDS and electrical conductivity (EC) (EC meter), pH (pH meter), and turbidity (Turbidity meter). The result showed the value of CODmn: 1,8-10,2 mg/L, CODcr: 5,6-31,5 mg/L, DO: 4,0-6,1 mg/L, TDS: 204-289 mg/L, EC: 430-617 µS/cm, pH: 7,1-7,6, and turbidity: 2,02-10,30 NTU. There are 3 stations (A, B, and C) with 1st class water quality, 1 station (D) with the 2nd class water quality, and 4 stations (E, F, G, and H) with 3rd class water quality. The decrease of water quality in the Brantas Watershed from Batu to Malang City was up to 3 times with a decrease rate of 2,3 mg/L-1Km-1. The decomposition of organic materials in the water of Batu City and western part of Malang City is relatively better than that of central parts of Malang City which might be caused by the over capacity of recovery (Self-purification mechanism).

Quality Evaluation of Jajrood River (IRAN) by Quality Indices Methods

2013 ◽  
Vol 650 ◽  
pp. 652-657
Author(s):  
Mohammad Mirzaei ◽  
Hamed Hasanian
Keyword(s):  
Water Quality ◽  
Quality Index ◽  
Quality Indices ◽  
Wet Season ◽  
Management Actions ◽  
Acceptable Quality ◽  
Negative Effect ◽  
Dry Seasons ◽  
Better Than

This Regular evaluation and analysis of river quality helps accurate management to reach acceptable quality. In this study, water quality indices (WQI) method applied to evaluate quality of Jajrood River which is one of the main sources of Tehran drinking water. It helps to subsidize management actions in Jajrood watershed. Sampling carried out for 9 years during 2001-2010 in 10 stations along the river in wet and dry stations to identify water quality and the main source of pollution. Results show water quality in all stations classifies as medium according to National Sanitation Foundation (NSF) and water quality index in wet season is better than the corresponding value in dry seasons. Entrance of pollution during the upstream of Latian Dam (especially in populated centers) has negative effect on the water quality, however river has a good natural attenuation capacity, therefore quality index of river in the main inlet of Latian dam (Lashkarak Bridge) classifies as medium. Collecting wastewater at the populated centers and developing soil conservation and controlling erosion at the upstream of watershed can effectively improve the water quality of river.

The Evaluation Groundwater Quality in Daqing Oilfield by Using Logging Data

2014 ◽  
Vol 955-959 ◽  
pp. 3088-3092
Author(s):  
Yu Bo Yang ◽  
Zhong Jun Deng
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Groundwater Quality ◽  
The South ◽  
High Quality ◽  
Well Location ◽  
Sand Body ◽  
Resistivity Logging ◽  
Better Than

In order to research the groundwater quality of the Taikang Formation in Tertiary in west of Daqing Oilfield, resistivity logging data of 140 wells in the study area were used to analyze the relations between the groundwater quality and sedimentary sand body and buried depth. The south area of Hongweixing well area and the east of Xishuiyuan well area, including Ranghulu, Qianjincun, Dulitun and Nanshuiyuan well area are favorable for high quality groundwater. The shallower buried water quality is better than the deeper buried water quality of the Taikang Formation in Tertiary. The research provides the evidences to evaluate the groundwater quality in west Daqing Oilfield and determine specific well location, improving the efficiency of exploring the underground drinking water.

scholarly journals Application of statistical control on water quality in cisterns in the semiarid Pernambucano

2021 ◽  
Vol 6 (2) ◽  
pp. 128-135
Author(s):  
Moacyr Cunha Filho ◽  
Renisson Neponuceno Araujo Filho ◽  
Ana Luiza Xavier Cunha ◽  
Isys Pryscilla de Albuquerque Lima ◽  
Ana Patricia Siqueira Tavares Falcão ◽  
...  
Keyword(s):  
Water Quality ◽  
Control Charts ◽  
Fecal Coliforms ◽  
Statistical Quality Control ◽  
Semiarid Region ◽  
Statistical Control ◽  
Microbiological Characteristics ◽  
Semi Arid Region ◽  
Semi Arid

In the Brazilian semi-arid region, it is necessary to use alternatives for the better use of water, since evapotranspiration rates exceed rainfall rates, which may favor salt accumulation in cistern systems. This work aimed to investigate the water quality of cisterns from communities in the semiarid region of Pernambuco state. Thus, the following physicochemical and microbiological characteristics of cistern water were monitored: color, turbidity, total dissolved solids (T.D.S.), salinity through electrical conductivity (EC), pH and total and fecal coliforms. For monitoring, statistical quality control techniques, control charts and process capacity indices were employed. Results were found with high values for microbiological, total and fecal coliforms in most samples. Control charts showed no abnormality in the process. The probable reasons for the contamination of cistern water is the lack of cleaning of the gutters that are part of the stored water catchment system. In the northeastern semi-arid population, people are looking for ways to use natural resources to ensure survival and water quality is seen as a guarantee for quality of life.

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