scholarly journals Evaluation and Enhancement of Sustainable Organic Fishpond Farming in the Sei Teras Fishpond Irigation Area, Central Kalimantan

2021 ◽  
Vol 930 (1) ◽  
pp. 012009
Author(s):  
R Ciptadi ◽  
A P Rahardjo ◽  
B Kamulyan
Keyword(s):  
Water Quality ◽  
Production Rate ◽  
Fresh Water ◽  
Rainy Season ◽  
Saline Water ◽  
Quality Parameters ◽  
Irrigation Network ◽  
Control Structures ◽  
Central Kalimantan ◽  
Water Ph

Abstract Sei Teras fishpond area was developed by the Banjar community in 2006. The conditions of the ponds in Sei Teras are still very simple, where the availability of seeds and feed is completely dependent on nature. The evaluation is based on the level of control and the production rate, while efforts for improvement are planned through controlling water quality. In the rainy season, the shrimp productivity ranges from 180 Kg/ha, while it can reach 450 kg/ha in the dry season. From the measurements results in November 2020-Mei 2021, it was noted that the salinity of the water in fishponds and canals ranged from 2 to 24.3 ppt while the water pH ranged from 6.11. to 7.87. Water quality parameters such as DO and pH have met the criteria for applying higher aquaculture technology, while other parameters such as Nitrate, Nitrite, Ammonia, TDS and Salinity require improvement and/or control. An alternative design is in the form of rearranging the fishpond system such as individual fishpond size. In addition, it is necessary to manage the fishpond irrigation network, namely by planning the main control structures separating fresh water and saline water, and rehabilitation of channels that experience sedimentation.

scholarly journals Effects of Opened and Closed Spillway Operations of a Large Tropical Hydroelectric Dam on the Water Quality of the Downstream River

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Fiona-Annilow Wera ◽  
Teck-Yee Ling ◽  
Lee Nyanti ◽  
Siong-Fong Sim ◽  
Jongkar Grinang
Keyword(s):  
Water Quality ◽  
River Basin ◽  
Aquatic Organisms ◽  
Quality Parameters ◽  
Regulated River ◽  
Land Uses ◽  
Hydroelectric Dam ◽  
Water Ph ◽  
The Impact

Water quality downstream of a hydroelectric dam is potentially affected by dam operations and other land uses in the river basin. Previous short-distance studies below the large Bakun Dam indicated poorer water quality during closed spillway. However, the extent of the impact is still unknown. Such knowledge is essential for mitigating the impact of the dam. Thus, the objectives of this study were to determine the water quality up to a distance of 210 km under two spillway operations, namely, closed and opened spillways, and also to determine the changes in water quality from the predam condition. Physicochemical parameters were measured at 15 stations along the Rajang River. Results of this preliminary study indicated that there were significant differences in eight out of nine water quality parameters between opened and closed spillway operations with opened spillway showing better water quality. During closed spillway, as we approached the dam, there was an increasing acidity and a decreasing oxygen content. Furthermore, as the water flows downstream, the unhealthy DO level (<5 mg/L) extended up to 165 km and the linear model showed an increasing DO rate of 0.09 mg/L per km. With opened spillway, DO decreased exponentially from 9.74 mg/L towards the downstream direction to 7.67 mg/L. The increasing turbidity and TSS in the downstream direction indicate contributions from erosion due to other land uses. The river is polluted with organics as indicated by COD of Class IV or V with sources from the dam and the activities in the river basin. Compared to the predam condition, the regulated river is less turbid but warmer and higher in ammonia. Closed spillway led to lower DO and acidic water. However, opened spillway water pH and DO were similar to those in the predam condition. Thus, it is recommended that DO be consistently high enough for the health of sensitive aquatic organisms downstream.

scholarly journals Kultur Masal Chidoridae

2019 ◽  
Vol 3 (1) ◽  
Author(s):  
Mezak Hematang ◽  
Sartje Lantu
Keyword(s):  
Water Quality ◽  
Fresh Water ◽  
Rice Bran ◽  
Mass Culture ◽  
Water Mass ◽  
Quality Parameters ◽  
Water Quality Parameters

The goal of mass culture of chydoridae is to find out the density of chydoridae that was cultured with yeast and rice bran.  Chydoridae was cultured on 5 aquaria i.e 3 aquaria measuring 100 x 60 x cm (A, B and C) and 2 aquaria measuring 30 x 30 x 30 cm (D and E).  Water quality parameters measured were temperature and pH.  The result of chydoridae mass culture for 21 days reached the peak on 14th day with the result as follow : for aquarium A with the concentration of yeast and rice bran 0.05 g/500 mL is 31 individue/ml; aquarium B with the concentration of yeast and rice bran 0.03 g/500 mL is 13 individue/ml; aquarium C with the concentration of yeast and rice bran 0.03 g/500 mL is 5 individue/ml; aquarium D with the concentration of yeast and rice bran 0.005 g/500 mL and aquarium E with the concentration of yeast and rice bran 0.003 g/500 mL can not be detected.  Counting the density of chydoridae on 21st day gave the result as follow : aquarium A as much as 4 individue/ml; aquarium B as much as 3 individue/ml; aquarium C as much as 2 individu/ml; aquarium D as much as 1 individue/ml and aquarium E as much as 2 individu/ml.  During culturing, water quality such as temperature and pH were on the range that was not harmful the chydoridae life.   Keywords: zooplankton, life food, chydoridae, fresh water, mass culture

scholarly journals Spatial and temporal variation of salt ions in the surface water of Shule River Valley in Gansu Province, China

2018 ◽  
Vol 19 (2) ◽  
pp. 662-670 ◽  
Author(s):  
Quan en Guo ◽  
Bao guo Li ◽  
Li li Nan ◽  
Zhong nan Nie ◽  
Shi yu Cao
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
River Water ◽  
Total Dissolved Solids ◽  
Quality Parameters ◽  
Gansu Province ◽  
Spatial And Temporal Variation ◽  
Dissolved Solids ◽  
Lower Region ◽  
Water Ph

Abstract The objective of the study was to assess the quality of the Shule River water for irrigational purposes. Surface water samples were collected along the course of the river in May and October 2012. The samples were analyzed for pH, electrical conductivity (EC), bicarbonate, chloride, sulphate, sodium, potassium, calcium and magnesium. Surface water was generally alkaline (average pH 8.17) and water pH and total dissolved solids in May were higher than those in October. EC ranged from 0.24 to 2.15 mS cm−1. Sodium was identified as the dominant cation, sulphate was identified as the dominant anion in May for both samples of river water but, in October, the dominant anions are respectively sulphate, bicarbonate and chloride from the upper region to the lower region. The total dissolved solids, chloride and sodium were found to exceed the permissible limits for irrigation water in the lower region. According to the principal factor analysis results, among water quality parameters measured in this study, chloride is the best indicator for monitoring water quality. The results revealed a deteriorating water quality in the lower region of the river.

scholarly journals Qualidade de Água do Rio Cuiabá no Perímetro Urbano da Capital Mato-Grossense

UNICIÊNCIAS ◽  
2021 ◽  
Vol 24 (2) ◽  
pp. 158-164
Author(s):  
Jorge Luiz de Arruda ◽  
Ana Carolina Amorim Marques ◽  
Osvaldo Borges Pinto Junior
Keyword(s):  
Water Quality ◽  
Biochemical Oxygen Demand ◽  
Rainy Season ◽  
Quality Index ◽  
Suspended Solids ◽  
Oxygen Demand ◽  
Quality Parameters ◽  
Dry Period ◽  
Total Coliforms ◽  
Effluent Quality

Este trabalho apresenta uma análise do índice e dos parâmetros de qualidade de água no perímetro urbano do rio Cuiabá - MT, considerando uma variação temporal (período úmido e seco) e espacial (montante - jusante) no ano de 2015. Os resultados mostraram que maiores valores de turbidez, sólidos totais, oxigênio dissolvido, demanda bioquímica de oxigênio e coliformes totais foram obtidos no período úmido e que os maiores valores de pH, nitrogênio/nitrato e fósforo/fosfato ocorreram no período seco. O Índice de Qualidade de Água (IQA) foi maior no período seco em função de menores valores sólidos em suspensão, turbidez e coliformes totais. A análise da água da região perimetral ao rio Cuiabá demonstrou diferenças significativas entre os pontos mais a montante (Sucuri) em relação aos pontos a jusante (Porto e Caís) em ambos os períodos. Nesse sentido, o IQA foi menor nos pontos mais a jusante (Porto, Caís e Comunidade São Gonçalo Beira Rio) que nos pontos mais a montante (Sucuri e Ribeirão do Lipa). Os parâmetros estudados atendem a normatização da Resolução Conama 357/2005, apesar das diferenças no IQA para os pontos amostrados entre os períodos sazonais.   Palavras-chave: Efluente. Índice de Qualidade. Valoração Ambiental.   Abstract This work presents an analysis of the index and water quality parameters in the urban perimeter of  Cuiabá - MT, considering a temporal (rainy and dry period) and spatial (downstream) variation in the year 2015. Higher turbidity values, total dissolved oxygen, biochemical oxygen demand and total coliforms were obtained in the rainy season, while higher values ​​of pH, nitrogen / nitrate and phosphorus / phosphate occurred in the dry period.  IQA was higher in the dry period due to lower suspended solids, turbidity and total coliforms. The water analysis from the perimeter region to the Cuiabá river showed significant differences between the points upstream (Sucuri) in relation to the downstream points (Porto and Caís) in both periods. In this sense, the IQA was smaller in the points downstream (Porto, Caís and Comunidade São Gonçalo Beira Rio) than in the most upstream points (Sucuri and Ribeirao do Lipa). The studied parameters comply with the normalization of Conama Resolution 357/2005, despite the differences in the IQA for the points sampled between the seasonal periods.   Keywords: Effluent. Quality Index. Environmental Valuation.

scholarly journals Analisa Kandungan Merkuri (Hg) Di Wilayah Penambangan Emas Danau Payawan Desa Tumbang Panggo Kecamatan Tasik Payawan Kabupaten Katingan

PROMINE ◽  
2019 ◽  
Vol 7 (2) ◽  
pp. 59-64
Author(s):  
Fahrul Indrajaya ◽  
Lisa Virgiyanti
Keyword(s):  
Water Quality ◽  
Laboratory Test ◽  
Mercury Content ◽  
Quality Parameters ◽  
Test Results ◽  
Central Kalimantan ◽  
River Water Samples ◽  
Quality Of Water ◽  
Laboratory Test Results

Field activities conducted to determine the level of mercury content in the water flow of Lake Payawan,Tumbang Panggo Village, Tasik Payawan District, Katingan Regency, Central Kalimantan Provincebased on laboratory test results to obtain the results of mercury content in upstream to downstream ofLake Payawan. From this research, it is necessary to test the quality of water in the laboratory in orderto analyze the water quality parameters so it can be known mercury content (Hg) in Lake Payawanwater flow. From the test results on 6 points river water samples in the laboratory of the IndustrialResearch and Standardization Center of Banjarbaru City showed the highest mercury content found insample number 3 with P. 2076 test code taken at the location of the middle Lake Payawan TasikPayawan District with mercury levels located At a rate of 0.069 μg / l or 0.000069 mg / l, this reflectsthe presence of other factors that may also affect the level of mercury content in Lake Payawan flow.

scholarly journals Statistical analysis of water quality parameters in the basin of the Nišava River (Serbia) in the period 2009–2018

Geografie ◽  
2021 ◽  
Vol 126 (1) ◽  
pp. 55-73
Author(s):  
Ljiljana Stričević ◽  
Mila Pavlović ◽  
Ivan Filipović ◽  
Aleksandar Radivojević ◽  
Nataša Martić Bursać ◽  
...  
Keyword(s):  
Water Quality ◽  
Statistical Analysis ◽  
Rural Areas ◽  
Suspended Solids ◽  
Quality Parameters ◽  
Coliform Bacteria ◽  
Surface Water Flow ◽  
Water Ph ◽  
Urban And Rural Areas ◽  
Post Hoc

This paper analyzes water quality from four hydrological stations in the Nišava river basin from 2009–2018 based on the following parameters: pH, conductivity, O2 saturation, BOD5, suspended solids, total oxidized nitrogen, phosphates, turbidity and coliform bacteria. Authors have applied WQI (water quality index) as the most reliable indicator of the watercourses pollution for setting of surface water flow quality. Statistical analysis of variance (ANOVA) using t-test inferential statistical analysis and post-hoc Tukey test were applied to evaluate statistically significant differences between specific data groups. The results show that bad water quality was registered on all the profiles on an annual basis (WQI = 65–71). The river water pH decreases downstream, while values of BOD5, suspended solids, turbidity, TON, phosphates and coliform bacteria gradually increase. The waters of the Nišava at the station Niš belong to the third class of waters and they are mostly loaded with organic matter originating from waste sewage and industrial waters of both urban and rural areas.

scholarly journals Spatio-seasonal variation of water quality influenced by land use and land cover in Lake Muhazi

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Edovia Dufatanye Umwali ◽  
Alishir Kurban ◽  
Alain Isabwe ◽  
Richard Mind’je ◽  
Hossein Azadi ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Seasonal Variation ◽  
Land Cover ◽  
Rainy Season ◽  
Quality Parameters ◽  
Dry Season ◽  
Sustainable Land Use ◽  
Water Quality Parameters ◽  
Strong Positive Correlation

AbstractUnderstanding the influence of land use/land cover (LULC) on water quality is pertinent to sustainable water management. This study aimed at assessing the spatio-seasonal variation of water quality in relation to land use types in Lake Muhazi, Rwanda. The National Sanitation Foundation Water Quality Index (NSF-WQI) was used to evaluate the anthropogenically-induced water quality changes. In addition to Principal Components Analysis (PCA), a Cluster Analysis (CA) was applied on 12-clustered sampling sites and the obtained NSF-WQI. Lastly, the Partial Least Squares Path Modelling (PLS-PM) was used to estimate the nexus between LULC, water quality parameters, and the obtained NSF-WQI. The results revealed a poor water quality status at the Mugorore and Butimba sites in the rainy season, then at Mugorore and Bwimiyange sites in the dry season. Furthermore, PCA displayed a sample dispersion based on seasonality while NSF-WQI’s CA hierarchy grouped the samples corresponding to LULC types. Finally, the PLS-PM returned a strong positive correlation (+ 0.831) between LULCs and water quality parameters in the rainy season but a negative correlation coefficient (− 0.542) in the dry season, with great influences of cropland on the water quality parameters. Overall, this study concludes that the lake is seasonally influenced by anthropogenic activities, suggesting sustainable land-use management decisions, such as the establishment and safeguarding protection belts in the lake vicinity.

scholarly journals SISTEM PENGECEKAN PH AIR OTOMATIS MENGGUNAKAN SENSOR PH PROBE BERBASIS ARDUINO PADA SUMUR BOR

2020 ◽  
Vol 3 (2) ◽  
pp. 340-346
Author(s):  
Hariyadi Hariyadi ◽  
Mahyessie Kamil ◽  
Putri Ananda
Keyword(s):  
Water Quality ◽  
Power Supply ◽  
Ph Sensor ◽  
Quality Parameters ◽  
Water Quality Parameters ◽  
Field Surveys ◽  
Ph Probe ◽  
Measurement Results ◽  
Water Ph ◽  
Arduino Uno

One of water quality parameters is the degree of water. For most of people, water quality is considered important because it is not only about aesthetic. A good water for consumption to governmentissued regulation through Indonesian Minister of Health is has a pH 6.5 - 8.5 value ( Regulation of Minister of Healty No 907, 2002, about Term and Supervision of Water Quality Drinking, and Regulation of Minister of Healty No 416, 1990 about Term and Supervision of Water Quality). Although most of people in Bukittinggi still do not know whether the water from drill water used is worth consuming or not. Therefore, writer planned to build a device to measure the acidity (pH) of water to make it easier to identify the water to be used. Device made by author has same function as water pH device or pH meter that has been traded in general. This device uses a liquid acidity sensor circuit as a pH sensor. The processing of sensor result is carried out by sensors by using Arduino Uno, display the measurement results using LCD. This device is relatively accurate with the power supply using 9 V battery that available in the market so this device can be taken everywhere to make it easier to use when researching or field surveys.

scholarly journals Monitoring Kualitas Air pada Tambak Pembesaran Udang Vannamei (Litopenaeus vannamei) di Situbondo, Jawa Timur [Monitoring of Water Quality on Rearing Ponds of Vannamei Shrimp (Litopenaeus vannamei) in Situbondo, Jawa Timur ]

2019 ◽  
Vol 6 (2) ◽  
pp. 137
Author(s):  
Fatchurizal Rama Putra, Abdul Manan
Keyword(s):  
Water Quality ◽  
Litopenaeus Vannamei ◽  
Economic Value ◽  
Early Morning ◽  
Quality Parameters ◽  
Shrimp Farming ◽  
Observation Data ◽  
Growth And Survival ◽  
Chlorella Sp ◽  
Water Ph

Abstract Vannamei shrimp (Litopenaeus vannamei) is one of fishery commodities that have high economic value in international market, so the vannamei shrimp farming can be reliable. Success in maintaining of water quality is the key factor in the cultivation. Either directly or indirectly, the water quality has important role in determining the growth and survival of vannamei shrimp. Water quality parameters that contribute to survival in vannamei shrimp growth include water temperature, dissolved oxygen, water pH, salinity and ammonia. The purposed of this study is to know the conditions of water quality on enlargement ponds of vannamei shrimp (Litopenaeus Vannamei) in Situbondo. Study was held on January 16 to February 16, 2012. The methods used in this study is descriptive method. Water management activities on enlargement vannamei shrimp includes good water quality observed in biological, physical, and chemical. In addition to the observation of water quality, maintenance, enlargement of vannamei shrimp also save good preparation includes construction of pond and container preparation and feeding. Daily observation data acquisition carried out water sampling done one time and early morning. Sampling using bottle samples. Get the data covering the temperature range between 27-30 ºC, salinity between 25-28 ppt, pH ranged from 7.0 to 9.0, DO levels ranged from 4.0 -4.8 mg / L, ≤ 0.001 ppm levels of ammonia, BOD from 1.3 to 1.75 ppm, plankton here tend to be kind Diatomae, Chlorella sp, Copepods, Rotifera, Ocylatoria.

Saline sewage treatment and source separation of urine for more sustainable urban water management

2011 ◽  
Vol 64 (6) ◽  
pp. 1307-1316 ◽  
Author(s):  
G. A. Ekama ◽  
J. A. Wilsenach ◽  
G. H. Chen
Keyword(s):  
Water Management ◽  
Water Quality ◽  
Fresh Water ◽  
Water Distribution ◽  
Saline Water ◽  
Source Separation ◽  
Urban Water ◽  
Urban Water Management ◽  
Toilet Flushing ◽  
Water Quality And Quantity

While energy consumption and its associated carbon emission should be minimized in wastewater treatment, it has a much lower priority than human and environmental health, which are both closely related to efficient water quality management. So conservation of surface water quality and quantity are more important for sustainable development than green house gas (GHG) emissions per se. In this paper, two urban water management strategies to conserve fresh water quality and quantity are considered: (1) source separation of urine for improved water quality and (2) saline (e.g. sea) water toilet flushing for reduced fresh water consumption in coastal and mining cities. The former holds promise for simpler and shorter sludge age activated sludge wastewater treatment plants (no nitrification and denitrification), nutrient (Mg, K, P) recovery and improved effluent quality (reduced endocrine disruptor and environmental oestrogen concentrations) and the latter for significantly reduced fresh water consumption, sludge production and oxygen demand (through using anaerobic bioprocesses) and hence energy consumption. Combining source separation of urine and saline water toilet flushing can reduce sewer crown corrosion and reduce effluent P concentrations. To realize the advantages of these two approaches will require significant urban water management changes in that both need dual (fresh and saline) water distribution and (yellow and grey/brown) wastewater collection systems. While considerable work is still required to evaluate these new approaches and quantify their advantages and disadvantages, it would appear that the investment for dual water distribution and wastewater collection systems may be worth making to unlock their benefits for more sustainable urban development.

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