scholarly journals Interannual variation in water quality, bottom sediments, and community structures of macrobenthic fauna in the Isahaya Bay reservoir, western Kyushu, Japan

2020 ◽  
Vol 74 (2) ◽  
pp. 115-122
Author(s):  
Shin’ichi SATO ◽  
Mikio AZUMA ◽  
Masatoshi MATSUO ◽  
Akifumi OHTAKA ◽  
Shigeo KONDO ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Interannual Variation ◽  
Community Structures ◽  
Macrobenthic Fauna ◽  
Isahaya Bay

scholarly journals Interannual variation from 1997 to 2015 in bottom sediments and community structures of macrobenthic fauna in the Ariake Sea, western Kyushu, Japan

2020 ◽  
Vol 75 (0) ◽  
pp. 54-64
Author(s):  
Shin’ichi SATO ◽  
Mikio AZUMA ◽  
Takaki YAMANAKA ◽  
Yusuke YODA ◽  
Masatoshi MATSUO ◽  
...  
Keyword(s):  
Bottom Sediments ◽  
Interannual Variation ◽  
Community Structures ◽  
Ariake Sea ◽  
Macrobenthic Fauna

CURRENT STATE OF WATER QUALITY AND BOTTOM SEDIMENTS IN LAKE DONUZLAV

2018 ◽  
Vol 1 (1) ◽  
pp. 32-38
Author(s):  
S.S. Zhugaylo ◽  
T.M. Avdeeva ◽  
M.N. Pugach ◽  
E.N. Adzhiumerov
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Current State ◽  
State Of Water

Assessment of Water Quality and State of Bottom Sediments of the Northern Part of the Rybinsk Reservoir by Emissions of the CherMK PAO "Severstal"

2019 ◽  
Vol 23 (10) ◽  
pp. 39-43 ◽  
Author(s):  
K.Yu. Mikhaylichenko ◽  
A.I. Kurbatova ◽  
A.Yu. Dorontsova ◽  
A.A. Paukova
Keyword(s):  
Water Quality ◽  
Adverse Effect ◽  
Metallurgical Plant ◽  
Bottom Sediments ◽  
Rybinsk Reservoir ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
The Rybinsk Reservoir

The quality of the water and bottom sediments of the Rybinsk Reservoir, on the adjacent territory of which the Cherepovetskiy Metallurgical Plant PJSC “Severstal” is located, which has an adverse effect on the state of the water body is investigated. The pollution of water and bottom sediments by the metallurgical plant in the northern part of the Rybinsk reservoir was assessed in connection with the planned construction of a pulp and paper mill (PPM) at the site of the study.

scholarly journals The Process of Microbiological Remediation of the Polluted Słoneczko Reservoir in Poland: For Reduction of Water Pollution and Nutrients Management

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 3002
Author(s):  
Jakub Mazurkiewicz ◽  
Agata Mazur ◽  
Robert Mazur ◽  
Krzysztof Chmielowski ◽  
Wojciech Czekała ◽  
...  
Keyword(s):  
Water Quality ◽  
Bottom Sediments ◽  
Surface Water Quality ◽  
Organic Content ◽  
Water Transparency ◽  
Water Remediation ◽  
Polluted Water ◽  
High Concentration ◽  
Effective Microorganisms ◽  
The Impact

The article discusses the impact of nutrients from sewage on the state of the sewage receiver. Bioremediation was carried out through the use of effective microorganisms. The potential recovery of valuable mineral and organic substances in the form of fertilizers was also examined. The Słoneczko Reservoir is a bathing area and serves many people in the summertime as a place of water recreation. Water quality deteriorated intensively from 2006 as a result of illegal wastewater discharge and the impact of fecal pollution from bathers. The high concentration of nutrients in the water was the cause of the eutrophication process and blooms of cyanobacteria, which pose a threat to human health in the bathing area. The bathing area was also closed many times by sanitary services as a result of exceeding the number of Escherichia coli and Enterococcus faecalis in the water. At the bottom of the reservoir, there was a layer of sediments with a thickness of 30–70 cm. Thus, the processes of anaerobic decomposition generated odor, causing nuisance in the reservoir area. Water transparency varied from 30 to 50 cm, due to the accumulation of suspensions and biomass of planktonic algae. The reservoir was subjected to microbiological bioremediation in 2017 and 2018 to polluted water treatment and to reduce the organic content of bottom sediments. Already after the first application of biopreparations putrefactive odors and the eutrophication process disappeared at the end of the 2017 summer season. Bioremediation reduced the value of E. coli and E. feacalis to the acceptable level. After the second application in 2018, the organic fraction of the bottom sediments was reduced to a very low level and the water transparency reached the bottom (maximum depth was 2.2 m) throughout the entire bathing area. The effect of the water remediation was maintained until 2019, and the surface water quality remained at a very good level. An important aspect in this case is also the exploitation of bottom sediments, because they are rich in nutrients and organic matter, and therefore it may have some potential as a fertilizer. The recovery of nutrients can be used in plant or pot production. However, they contain compounds that degrade quickly, causing unpleasant odors and threatening the environment. Thus, they should be managed and handled in an environmentally friendly and sustainable way.

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