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Nitrification activity
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Municipal wastewater treatment plants generally utilise biological activated sludge processes to remove organic compounds and nitrogen. The biological nitrogen removal (BNR) occurs in two steps, nitrification (ammonium removal) and denitrification (nitrates removal). This study focused on a medium-sized wastewater treatment plant (WTP) which experienced poor nitrification for years, mainly when the weather temperature drops.
125p
runthenight07
01-03-2023
5
2
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This study, therefore, aimed to investigate the application of biochar from agricultural wastes to remove the excess nitrogen in domestic wastewater. In particular, this work examined the utilization of biochar obtained from coffee husk pyrolyzed at 350 oC to adsorb ammonium. Besides, adding biochar could be a simple and effective method for the initiation of activated sludge granulation to facilitate the treatment of low C/N ratio wastewater.
11p
cothumenhmong9
04-01-2021
13
2
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Nitrogen is a major essential yield limiting nutrient in crop production, it serves as a constituent of many plant cell components, such as amino acids and nucleic acids. Hence it is important to improve the productivity as maize is an exhaustive crop. The low productivity of maize during kharif season is attributed to a wide range of constraints including the low nitrogen use efficiency.
6p
gaocaolon9
22-12-2020
14
2
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The present investigation was carried out to understand the effect of ammonia concentrations on the rate of ammonia-oxidizing activity of ammonia oxidizing bacteria (AOB) isolates. Maximum ammonium removal by all the isolates was found at 3 ppm ammonium concentration.
12p
chauchaungayxua8
03-10-2020
11
1
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Nitrogen is the key nutrient factor that influences soil fertility and productivity. It is the mineral nutrient that exists in different forms, but nitrate form is the most preferred form by plants. Irrespective of the form in which N is applied to soil, it undergoes transformation viz. mineralization (ammonification, nitrification), denitrification etc. by enzymes produced by micro organisms.
17p
trinhthamhodang7
31-08-2020
25
1
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The present investigation was carried out to study the effects of long-term application of inorganic fertilizers and organic amendments on soil organic matter level, soil biological properties and plant nutrient reserves. The continuous application of organic amendments for the last ten years under cotton-wheat cropping system at CCS H.A.U, Hisar had beneficial effects on soil chemical, arginine ammonification and nitrification activity as compared to application of chemical fertilizers.
7p
nguathienthan4
18-04-2020
10
0
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Physical and biochemical properties of apple orchard soils of different productivities (orchard A: 30 t∙ha−1; orchard B: 20 t∙ha−1) were analyzed. Most of the physical properties were similar in both orchards. In orchard A, the horizontal saturated hydraulic conductivity at 10-cm depth was 16.42 cm∙day−1, and was about four times higher tha n that in orchard B (4.41 cm∙day−1).
8p
mentospurefresh
29-11-2019
13
1
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A hybrid biological reactor (HBR) which contained both suspended- and attached-growth biomass was developed by introducing sponge materials into a regular activated sludge unit and used for the treatment of seafood processing wastewater.
7p
vidanh27
08-12-2018
21
0
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This publication presents agronomic reasons which have led to the development of controlled-release and stabilized fertilizers. The characteristics, the advantages and the possible disadvantages of controlled-release and nitrification/urease inhibitors are discussed. Particular attention is given to problems of legislation, registration, methodology and standardization. Leading manufacturers and their product ranges are listed.
156p
lamvanthongpvcfc
25-09-2013
48
11
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