Study on the Restoration of Eutrophic Landscape Water by Microbe-Technology

2011 ◽  
Vol 347-353 ◽  
pp. 1405-1410
Author(s):  
Zong Hua Wang ◽  
Yu Bin Zhao
Keyword(s):  
Chlorophyll A ◽  
Photosynthetic Bacteria ◽  
Experimental Results ◽  
Nitrifying Bacteria ◽  
Landscape Water ◽  
Restoration Effect

Some high effective microbes, photosynthetic bacteria, nitrifying bacteria, and corn-pound bacteria etc were used, to degrade pollutants of lake and the restoration characteristics were investigated. The experimental results showed that the restoration effect appeared 4 days later and got the best condition 22 days later. CODMn, NH3-N, TN, Tp and chlorophyll-a decreased rapidly and DO was improved from 7.2 mg/L to 8.5 mg/L.Ch1.-a related well to TP, CODMn, TN.

Study on Bioaugmention Technologies of Eutrophication Landscape Water

2013 ◽  
Vol 816-817 ◽  
pp. 1287-1290
Author(s):  
Zong Zheng Yang ◽  
Huan Zhang ◽  
De Qiang Zhang ◽  
Jin Zhao Pang
Keyword(s):  
Dissolved Oxygen ◽  
Chlorophyll A ◽  
Organic Substance ◽  
Photosynthetic Bacteria ◽  
Nitrifying Bacteria ◽  
Nitrogen Compounds ◽  
Removal Rates ◽  
Urban Lakes ◽  
Inoculation Method ◽  
Landscape Water

This inoculation method inputting photosynthetic bacteria, nitrifying bacteria, compound bacteria etc into the water, to degrade pollutants of the urban lakes in this paper. The results show that, the removal rates of organic substance, chlorophyll-a and nitrogen compounds were 60%, 90% and 50% respectively .Moreover, dissolved oxygen (DO) content increased from 1 to 7 mg/L by adding microbes. The conclusion can be drawn that its feasible for adding microbes into eutrophication water to decontaminate water.

Triplet-State Electron Spin Resonance of Chlorophyll a and b Molecules and Complexes in PMMA and MTHF. II: Interpretation of the Experimental Results

1978 ◽  
Vol 33 (1) ◽  
pp. 94-97 ◽  
Author(s):  
W. Hagele ◽  
D. Schmid ◽  
H. C. Wolf
Keyword(s):  
Experimental Data ◽  
Chlorophyll A ◽  
Energy Exchange ◽  
Photosynthetic Bacteria ◽  
Esr Spectra ◽  
Experimental Results ◽  
Chlorophyll B ◽  
Triplet Energy ◽  
Spin Resonance ◽  
Chlorophyll A And B

ESR spectra of various triplet species, obtained with solutions of chlorophyll a or chlorophyll b in PMMA or MTHF, are attributed to isolated chlorophyll molecules, to chlorophyll-solvent complexes and to dimeric structures. The structure of the proposed dimer is determined using the experimental results for the fine-structure and the rate constants and by assuming an incoherent triplet-energy exchange. Based on this model the structure of the reaction center in photosynthetic bacteria was also reevaluated using the experimental data which were published by various authors.

scholarly journals Efficient Ammonium Removal by Bacteria Rhodopseudomonas Isolated from Natural Landscape Water: China Case Study

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 1107 ◽  
Author(s):  
Xuejiao Huang ◽  
Jiupai Ni ◽  
Chong Yang ◽  
Mi Feng ◽  
Zhenlun Li ◽  
...  
Keyword(s):  
Photosynthetic Bacteria ◽  
Novel Species ◽  
Fatty Acid Content ◽  
Rhodopseudomonas Palustris ◽  
Morphological Properties ◽  
Specific Primers ◽  
Natural Landscape ◽  
Landscape Water ◽  
Rdna Amplification

In this study, we isolated a strain of photosynthetic bacteria from landscape water located in Southwest University, Chongqing, China, and named it Smobiisys501. Smobiisys501 was Rhodopseudomonas sp. according to its cell morphological properties and absorption spectrum analysis of living cells. The analysis of the 16S rDNA amplification sequence with specific primers of photosynthetic bacteria showed that the homology between Smobiisys501 and Rhodopseudomonas sp. was 100%, and the alignment results of protein sequences of the bacterial chlorophyll Y subunit showed that Smobiisys501 and Rhodopseudomonas palustris were the most similar, with a similarity of more than 92%. However, Smobiisys501 could not utilize glucose and mannitol as a carbon source and had a low fatty acid content, which were different from the related strains of the genus Rhodopseudomonas. Moreover, the DNA-DNA relatedness was only 42.2 ± 3.3% between Smobiisys501 and the closest strain Rhodopseudomonas palustris. Smobiisys501 grew optimally at 30 °C and pH 7.0 in the presence of yeast extract, and it could efficiently remove ammonium (99.67% removal efficiency) from synthetic ammonium wastewater. All the results indicated that Smobiisys501 was a novel species of Rhodopseudomonas, with the ability to remove ammonium.

Investigation of nitrification by co-immobilized nitrifying bacteria and zeolite in a batchwise fluidized bed

1997 ◽  
Vol 35 (8) ◽  
pp. 169-175 ◽  
Author(s):  
Lei Yang
Keyword(s):  
Ion Exchange ◽  
Fluidized Bed ◽  
Sodium Alginate ◽  
Ammonia Concentration ◽  
Ammonia Removal ◽  
Experimental Results ◽  
Ion Exchanger ◽  
Nitrifying Bacteria ◽  
Air Stripping ◽  
Concentration Levels

A new biotechnology of immobilization of nitrifying bacteria is developed to improve the effect of nitrification, in which a concentrated enriched culture of nitrifiers is entrapped into a special biomass carrier and immobilized by sodium alginate to form spherical pellets with diameters ranged from 1 to 2 mm. In addition, zeolite, which is a natural ion exchanger of ammonium, was co-immobilized into the pellets to enhance the efficiencies of transferring ammonium into the pellets as nitrifiers' substrate. The system was operated under five different initial applied ammonia concentration levels. The experimental results showed that physical air stripping effect was stronger than both chemical ion exchange and biological nitrification effects occurring in the system applied with initial ammonia concentration levels of both 10 and 20 mg N/I. In the experiments applied with initial ammonia concentration levels of 50, 70, and 100 mg N/I to the system, due to high nitrite concentrations detected in the effluents, it was inferred that both ion exchange and nitrification effects were dominant over air stripping effect. The reasons might be due to higher ammonium concentrations existing in the system causing stronger effects of ion exchange by zeolite entrapped inside the pellets. Hence, this new ammonia removal biotechnology appeared to be suitable to treat the wastewaters containing higher ammonia concentrations.

The role of a hybrid phytosystem in landscape water purification and herbicides removal

2015 ◽  
Vol 72 (11) ◽  
pp. 2052-2061 ◽  
Author(s):  
George Kirumba ◽  
Ling Ge ◽  
Dongyang Wei ◽  
Cong Xu ◽  
Yiliang He ◽  
...  
Keyword(s):  
Chlorophyll A ◽  
Water Purification ◽  
Typha Latifolia ◽  
Physical Parameters ◽  
Dissolved Phosphorus ◽  
Total Dissolved Nitrogen ◽  
Air Supply ◽  
Landscape Water ◽  
Removal Efficiencies ◽  
Stage 1

The performance of a hybrid phytosystem in landscape water purification and herbicides removal was investigated. The phytosystem operating in an arboretum is located in the Minhang Campus of Shanghai Jiao Tong University, China. The phytosystem is composed of two purification stages: sedimentation Stage 1 without external air supply; and Stage 2 with an external air supply. Stage 2 is also vegetated with three major kinds of plants, namely Pontederia cordata L., Typha latifolia L. and Cyperus alternifolius L. The system's hydraulic loading rate (HLR) was maintained at 1.632 m/day between December 2013 and November 2014. Sedimentation, filtration and adsorption by filter media, combined microbial processes in the rhizosphere (nitrification–denitrification) and plant uptake of the pollutants were all responsible for water purification in the phytosystem. The biological and physical parameters analyzed were total dissolved nitrogen (TDN), nitrate (NO3-N), nitrite (NO2-N), ammonia (NH3-N), total dissolved phosphorus (TDP), dissolved organic carbon (DOC), turbidity, chlorophyll-a and algal cells number. Highest removal efficiencies for TDN, TDP, turbidity, DOC, chlorophyll-a and algal cells were 56.9%, 73.3%, 92.4%, 29.9%, 94.3% and 91.0%, respectively. When the phytosystem was considered for herbicides removal, removal efficiencies of more than 25% were noted for all the herbicides.

Application of Gypsum Granule as a Capping Material to Reduce Phosphorus Release from Sediment of Lake Paldang

2007 ◽  
Vol 544-545 ◽  
pp. 521-524 ◽  
Author(s):  
Yong Jin Park ◽  
Jae Jung Ko ◽  
Young Im Kim ◽  
Sang Leen Yun ◽  
So Jung Kim ◽  
...  
Keyword(s):  
Water Column ◽  
Chlorophyll A ◽  
Nutrient Concentration ◽  
Phosphorus Release ◽  
Experimental Results ◽  
Chlorophyll A Concentration ◽  
P Concentration ◽  
In Situ Experiments ◽  
Calcium Cation

In this study, the capping effects of granular gypsum (Ca2SO4·2H2O) and sand on sediment and water column were evaluated in in-situ experiments in Lake Paldang. The results indicate that capping treatment is very effective for the restoration of eutrophied lake. It was demonstrated that phosphorus, T-N and T-P concentration in the water column of treated basin was relatively lower than control basin. As a consequence of reduction of nutrient concentration by capping treatment, chlorophyll-a concentration in treated basin was considerably lower than control basin. The chlorophyll-a concentration in water column could be reduced to 52% and 25% as compared to control basin, respectively, by the capping treatment with gypsum and sand. From the experimental results, it was concluded that gypsum was more effective capping material than sand for controlling of nutrients and chlorophyll-a. In addition, capping with gypsum bring calcium cation into sediment, which offer more site for phosphorus to bind. In case of the capping with gypsum, apatite P composition, mainly consist of Ca boun P, in the sediment increased from 24% to 43% for the two month of operation.

An Improved Blind Deconvolution Algorithm of Motion Blurred Image

2014 ◽  
Vol 668-669 ◽  
pp. 1045-1049
Author(s):  
Lei Yang ◽  
Ze Feng Wang ◽  
Hui Nan Guo ◽  
Guang Sen Liu ◽  
Hao Wang ◽  
...  
Keyword(s):  
Kernel Function ◽  
High Frequency ◽  
Blind Deconvolution ◽  
Experimental Results ◽  
Camera Motion ◽  
Clear Image ◽  
Deconvolution Algorithm ◽  
Image Blurring ◽  
Blurred Image ◽  
Restoration Effect

An improved blind deconvolution algorithm has been proposed to tackle the image blurring caused by movement. Firstly, take the model to analyze the blurred image and identify the high-frequency of the blurred image through the reasonable pre-estimation of blind kernel function. Then, further estimate the blurring matrix K by the use of the high-frequency while the high-frequency of the blurred image and the accuracy of the blurred image matrix have been improved gradually through normalized iteration. Finally, the clear image has been gained by the use of blind matrix deconvolution. Experimental results show that by the use of this algorithm the image has better subjective visual effect. The proposed algorithm has better restoration effect on the fused motion blurred image and the natural camera motion blurred image.

Diagnostics of Gold Laser Plasmas

1988 ◽  
Vol 102 ◽  
pp. 357-360
Author(s):  
J.C. Gauthier ◽  
J.P. Geindre ◽  
P. Monier ◽  
C. Chenais-Popovics ◽  
N. Tragin ◽  
...  
Keyword(s):  
Experimental Results ◽  
Pure Gold ◽  
Electronic Temperature ◽  
X Ray ◽  
Laser Plasmas ◽  
Collisional Radiative Model ◽  
Radiative Model

AbstractIn order to achieve a nickel-like X ray laser scheme we need a tool to determine the parameters which characterise the high-Z plasma. The aim of this work is to study gold laser plasmas and to compare experimental results to a collisional-radiative model which describes nickel-like ions. The electronic temperature and density are measured by the emission of an aluminium tracer. They are compared to the predictions of the nickel-like model for pure gold. The results show that the density and temperature can be estimated in a pure gold plasma.

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