Effects of floating photovoltaic systems on water quality of aquaculture ponds

2021 ◽  
Author(s):  
Teng‐Wei Wang ◽  
Ping‐Hung Chang ◽  
Ying‐Sheng Huang ◽  
Tain‐Sheng Lin ◽  
Shuenn‐Der Yang ◽  
...  
Keyword(s):  
Water Quality ◽  
Photovoltaic Systems ◽  
Aquaculture Ponds

scholarly journals Assessment of water quality of some aquaculture ponds in Ho Chi Minh City

2018 ◽  
Vol 10 (2) ◽  
pp. 79-84
Author(s):  
Thi Giang Huong Duong ◽  
Thuan Minh Nguyen ◽  
Ngoc Han Tran
Keyword(s):  
Water Quality ◽  
Chlorophyll A ◽  
Surface Water Quality ◽  
Threshold Value ◽  
The Other ◽  
Ho Chi Minh City ◽  
Technical Regulation ◽  
Freshwater Aquaculture ◽  
Aquaculture Ponds

Eutrophication in aquaculture ponds is one of the major issues related to both the environment and the health of consumers. This study has selected and conducted a water-quality survey of nine freshwater aquaculture ponds in Ho Chi Minh City. The empirical results showed that these ponds were seriously polluted with COD and BOD5 whose values did not meet the B2 column of the Vietnamese National Technical Regulation on Surface Water Quality (QCVN 08-MT:2015/BTNMT). On the other hand, most N-NH4+ and N-NO2- concentrations in the ponds met the threshold value of B2 column. The values ​​of the chlorophyll-a are greater than 10 μg/L, indicating that investigated ponds are in a state of eutrophication. In addition, the results of the TSI calculations showed that most of the sites that are in hyper-eutrophication state and phosphorus is identified as the eutrophication limit factor in these sites. Phú dưỡng hóa nguồn nước nuôi trồng thủy sản là một trong các vấn đề lớn liên quan đến cả môi trường và sức khỏe người tiêu dùng. Nghiên cứu này đã lựa chọn và tiến hành khảo sát chất lượng nước của chín ao hồ nuôi thủy sản trên địa bàn thành phố Hồ Chí Minh. Kết quả phân tích cho thấy các ao hồ trên bị ô nhiễm hữu cơ nặng với thông số COD và BOD5 đều không đạt chuẩn B2 theo quy chuẩn kỹ thuật quốc gia về chất lượng nước mặt (QCVN 08-MT:2015/BTNMT). Về mặt ô nhiễm các chất dinh dưỡng, nồng độ N-NH4+ và N-NO2- đa số chỉ thỏa mãn loại B2, thậm chí vượt ngưỡng quy định của cột B2. Các giá trị của thông số chlorophyll-a đều lớn hơn 10 µg/L, chứng tỏ các ao hồ khảo sát đều đang trong tình trạng phú dưỡng. Thêm vào đó, kết quả tính toán chỉ số TSI cho thấy hầu hết các vị trí nghiên cứu đang ở trạng thái siêu phú dưỡng và photpho được xác định là yếu tố giới hạn sự phú dưỡng của các vị trí khảo sát nêu trên.

Water quality of Inanam river estuary and the Ko-Nelayan tiger prawn aquaculture ponds in Sabah, Malaysia

Hydrobiologia ◽  
1994 ◽  
Vol 285 (1-3) ◽  
pp. 227-235 ◽  
Author(s):  
Mazlin B. Mokhtar ◽  
Almah Bt. Awaluddin ◽  
Low Yew Guan
Keyword(s):  
Water Quality ◽  
River Estuary ◽  
Aquaculture Ponds ◽  
Tiger Prawn

Spatial and Temporal variation analysis of water quality of Hemavathi River, Karnataka, India

2018 ◽  
Vol 6 (9) ◽  
pp. 196
Author(s):  
Santhosh K. M ◽  
S. Prashanth
Keyword(s):  
Water Quality ◽  
Agricultural Runoff ◽  
Spatial And Temporal Variation ◽  
Final Conclusion ◽  
Variation Analysis ◽  
Pollution Load ◽  
Quality Of Water ◽  
Pollution Loading ◽  
Origin Point

Urban development, agricultural runoff and industrialization have contributed pollution loading on the environment.  In this study Hemavathi river water from a stretch from its origin point to its sangama was studied for pollution load by determining parameters of water quality like pH, Alkalinity,  Ca, Mg, Nitrate, TDS, BOD, COD , and the results were compared with WHO and BIS standards to draw final conclusion on the quality of water.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

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