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Wyszukujesz frazę "hydraulic loading" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
The influence of hydraulic loading on biofilm properties in a subsurface wastewater infiltration system
Autorzy:
Zhang, L.
Yang, J.
Powiązania:
https://bibliotekanauki.pl/articles/205392.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
subsurface wastewater infiltration system
biofilms
hydraulic loading
spatial distribution
biofilm properties
Opis:
In this study, a pilot-scale subsurface wastewater infiltration system (SWIS) was deployed to study landscape water treatment. The goal of the study was to investigate the effects of hydraulic loading on pollutant removal and the spatial distribution of biofilm properties in SWIS. Results showed that the efficiencies of chemical oxygen demand (COD), total nitrogen (TN) and total phosphorus (TP) removal degraded as hydraulic loading increased. Furthermore, quantities of the biofilm properties parameter s increased with the hydraulic loading. Polysaccharide and protein levels ranged from 560 to 1110 μg/g filler and 60 to 190 μg/g filler, respectively, at a hydraulic loading of 0.2 m/d. At a hydraulic loading of 0.4 m/d, the quantities of polysaccharide and protein ranged from 1200 to 3300 μg/g filler and 80 to 290 μg/g filler, respectively. Biofilm intensity and biofilm activity per unit weight decreased with the increase in hydraulic loading.
Źródło:
Archives of Environmental Protection; 2016, 42, 4; 70-79
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Anaerobic-Aerobic Combined Bioreactor in Phosphorus Removal
Autorzy:
Kavousi, Rezvan
Borghei, Seyyed Mehdi
Powiązania:
https://bibliotekanauki.pl/articles/27314276.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
phosphorus removal
hydraulic loading
anaerobic-aerobic combined bioreactor
kaldnes packing
municipal wastewater
industrial wastewater
Opis:
A two-stage anaerobic-aerobic sequencing reactor system was developed in order to enhance the removal of biological phosphorus in the sequencing of combined reactors. Combining both aerobic and anaerobic designs in one reactor improved the efficiency and reduced the construction and operating costs. The combination of an upflow anaerobic fixed bed (UAFB) and a floating activated sludge aerobic bioreactor was designed with respective Kaldnes packing ratios of 90 and 30% for the anaerobic and aerobic sections. The controlled parameters were pH levels within a neutral range, a temperature of 37°C, mixed liquor suspended solids (MLSS) of 1220 and 1030 mg/L for the aerobic and anaerobic sections, respectively, and an attached growth that was equal of 743 and 1190 mg/L for the aerobic and anaerobic sections, respectively. Tests were conducted for three different initial phosphorus concentrations (12.8, 32.0, and 44.8 mg/L), two different volumes for each section, and four chemical oxygen demands (CODs) (500, 1000, 1200, and 1400 mg/L). The results demonstrated that, generally, the phosphorus removal in the anaerobic section fell significantly by increasing the inlet COD, and the maximum removal occurred at COD = 500 mg/L. More than 90% of the phosphorus was removed in the aerobic section at COD = 500 mg/L. In other words, the best performance of the reactor was when the ratio of the COD : N : P = 100 : 5 : 2, composition of phosphorus in industrial wastewater.
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 6; 111--127
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Application of Anaerobic-Aerobic Combined Bioreactor Efficiency in COD Removal
Autorzy:
Kavousi, Rezvan
Borghei, Seyyed Mehdi
Powiązania:
https://bibliotekanauki.pl/articles/27314286.pdf
Data publikacji:
2023
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
hydraulic loading
anaerobic-aerobic combined reactors
COD removal
fixed bed bioreactor
Kaldnes packing
municipal wastewater
industrial wastewater
Opis:
Over the past few decades, anaerobic-aerobic wastewater treatment systems have been widely used in industrial and municipal wastewater treatment. This study was conducted to examine the effects of combined anaerobic-aerobic bioreactors in the removal of chemical oxygen demands (COD) while reducing phosphate concentrations in synthetic wastewater. In this project, a bioreactor with the dimensions of 10 cm × 10 cm × 80 cm with respective Kaldnes packing ratios of 90 and 30% for the anaerobic and aerobic sections was designed. A combined anaerobic-aerobic reactor’s structure made changing hydraulic retention times only possible by adjusting the volume of its aerobic and anaerobic sections. In the first case, the anaerobic and aerobic sections of the reactor occupied 30 and 50 cm of its height, respectively. The height of the anaerobic section decreases to 12.5 cm in the second case. In aerobic and anaerobic sections, pH was within a neutral range, temperature was 37°C. MLSS (mixed liquor suspended solids) was 1220 and 1030 mg/L, and attached growth was 743 and 1190 mg/L respectively. In order to evaluate COD in the wastewater, three different initial phosphorus concentrations were tested: 12.8, 32.0 and 44.8 mg/L, as well as four COD: 500, 1000, 1200 and 1400 mg/L. Considering the results, COD removal is greater than 80% when the valve 2 is in the anaerobic section outlet regardless of the concentration of phosphate. In this case, the best result is for inlet COD of 500, where the reactor can eliminate more than 90%. When the COD concentration reaches 1000 to 1400 ppm, the reactor’s COD removal efficiency declines to 60%.
Źródło:
Geomatics and Environmental Engineering; 2023, 17, 4; 5--18
1898-1135
Pojawia się w:
Geomatics and Environmental Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic characteristics study on the two-stage safety valve used on hydraulic support under impact loading
Autorzy:
Zhao, Guochao
Wang, Hui
Song, Yuning
Zhang, Changshuai
Powiązania:
https://bibliotekanauki.pl/articles/2055035.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
safety valve
impact loading
hydraulic support
dynamic characteristic
Opis:
A two-stage linkage safety valve for hydraulic support is presented. Considering the hydraulic support is impacted, dynamic simulation of the column circuit with the two-stage safety valve subject impact loading was carried out, and the dynamic characteristics of the two- -stage safety valve with different impact forms were studied. A rapid impact loading test rig was built to test the two-stage safety valve sample under impact loading. Simulation and experimental results indicate that the two-stage safety valve has high sensitivity and good unloading performance, it can realize fast and large flow unloading of the hydraulic support under different impact forms and pressures.
Źródło:
Journal of Theoretical and Applied Mechanics; 2020, 58, 3; 623--635
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Równomierność ruchu tłoka siłownika hydraulicznego
Irregularity of move piston of hydraulic cylinder
Autorzy:
Chalamoński, M.
Powiązania:
https://bibliotekanauki.pl/articles/328724.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
siłownik hydrauliczny
nierównomierność ruchu
obciążenie
hydraulic cylinder
irregularity of move
external loading
misalignment
Opis:
W opracowaniu przedstawiono wyniki badań nierównomierności ruchu siłownika hydraulicznego przy uwzględnieniu wpływu zużycia tłoczyska siłownika, wielkości obciążenia oraz niewspółosiowości oddziaływania obciążenia zewnętrznego.
The results of laboratory reaserch irregularity of move piston of hydraulic cylinder, take into consideration wear of piston rod, external loading and misalignment external loading.
Źródło:
Diagnostyka; 2004, 30, T. 1; 97-100
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie technik CAD/CAE do projektowania platformy towarowej
Application of the CAD/CAE techniques to the design of the goods platform
Autorzy:
Chojnacki, R.
Budniak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/316833.pdf
Data publikacji:
2012
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
CAD/CAE
platforma załadunkowa
winda towarowa
analiza MES
napęd hydrauliczny
loading platform
freight elevator
FEM analysis
hydraulic drive
Opis:
W artykule zaprezentowano parametryczny model bryłowy platformy towarowej o udźwigu 600 kg, utworzony z wykorzystaniem technik komputerowych CAD/CAE. Przeprowadzono wytrzymałościową analizę numeryczną wybranych elementów konstrukcyjnych metodą elementów skończonych MES.
This article presents a parametric solid model with a lifting capacity of cargo platform 600 kg, made up of computer-aided CAD/CAE. An endurance numerical analysis of selected structural elements of finite element method FEM was made.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2012, 13, 5; 81-87
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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