scholarly journals Study on Purification Ability for Water Quality in Tidal Flats in Hiroshima Bay-Evaluation for the Characteristics of Organic Matter Decomposition.

1998 ◽  
Vol 21 (7) ◽  
pp. 421-428 ◽  
Author(s):  
Tohru SEIKI ◽  
Kiyonori HIRAOKA ◽  
Jeoung gyu LEE ◽  
Wataru NISHIJIMA ◽  
Tetsuo MUKAI ◽  
...  
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Tidal Flats ◽  
Organic Matter Decomposition

scholarly journals Pengaruh Aerasi Injeksi Udara terhadap Beberapa Parameter Kualitas Air di Lokasi Budidaya Ikan Waduk Ir. H. Djuanda

Omni-Akuatika ◽  
2016 ◽  
Vol 12 (3) ◽  
Author(s):  
Lismining Pujiyani Astuti ◽  
Niken TM Pratiwi
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Organic Materials ◽  
Fish Farming ◽  
Observation Point ◽  
Organic Matter Decomposition ◽  
Air Injection ◽  
Cage Culture ◽  
Perforated Pipe

Waste of fish farming in floating net are fish feces, urine and undigested feed which is one source of organic matter inputs in Ir. H. Djuanda. Waste organic materials can cause eutrophication of waters. Air injection is one way aeration to increase oxygen to help the process of organic matter decomposition. The purpose of this study was to assess the effect of air injection on some parameters of water quality in fish farming side. This research was conducted at the location of fish farming Ir. H. Djuanda in June-September 2013. Injection of air using a compressor with a pressure of 3 atm as a source of air and perforated pipe at a depth of 3.6 m. Air injection carried out for 8 hours. Observation point vertically at a depth of 3.6 m and horizontally at a distance of -1.5 m (behind the diffuser pipe); 0 (the diffuser pipe); 1.5 m (right and left pipe); +1.5; +3 And +6 m (in front of the pipe diffuser) and a distance of 17 m of pipe which is control. After eight hours of aeration showed that the concentration of organic matter, free carbondioxide, N-NO2 tend to belower in cages aerated but N-NO3 concentration was higher in locations aeration cage than controls cageKeywords: air injection aeration, water quality, fish cage culture, Ir. H. Djuanda Reservoir

Impact of Organic Matter from Stormwater on Water Quality in an Urban River

2015 ◽  
Vol 2015 (9) ◽  
pp. 1462-1481
Author(s):  
Jacob Richardson ◽  
R. Ryan Dupont ◽  
Joan E McLean
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Urban River

Design and test of a generic cohort model of soil organic matter decomposition: the SOMKO model

2001 ◽  
Vol 10 (6) ◽  
pp. 639-660 ◽  
Author(s):  
Jacques Gignoux ◽  
Joanna House ◽  
David Hall ◽  
Dominique Masse ◽  
Hassan B. Nacro ◽  
...  
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Organic Matter Decomposition ◽  
Cohort Model ◽  
Soil Organic Matter Decomposition

Soil drying and organic matter decomposition

1967 ◽  
Vol 26 (2) ◽  
pp. 269-276 ◽  
Author(s):  
W. O. Enwezor
Keyword(s):  
Organic Matter ◽  
Organic Matter Decomposition ◽  
Soil Drying

Study on De-Nitrification of Improved Step-Feed Progress

2014 ◽  
Vol 703 ◽  
pp. 171-174
Author(s):  
Bing Wang ◽  
Yi Xiao ◽  
Shou Hui Tong ◽  
Lan Fang ◽  
Da Hai You ◽  
...  
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Fluidized Bed ◽  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Removal Rate ◽  
Operating Conditions ◽  
Removal Mechanism ◽  
Aerobic Zone

Improved step-feed de-nitrification progress combined with biological fluidized bed was introduced in this study. The progress had good performance and capacity of de-nitrification and organic matter. The experiment result showed that the de-nitrification efficiency of the improved biological fluidized bed with step-feed process was higher than the fluidized bed A/O process under the same water quality and the operating conditions. When the influent proportion of each segment was equal, the system showed good nitrogen removal efficiency with the change of influent C/N ratio, HRT and sludge return ratio. The removal rate of TN reached up to 88.2%. It showed that the simultaneous nitrification and de-nitrification phenomenon happened in the aerobic zone. The nitrogen removal mechanism was also studied.

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