Isolation and identification and characterization of one phthalate-degrading strain from the active sludge of sewage treatment plant

2014 ◽  
pp. 451-458
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Isolation And Identification ◽  
Active Sludge ◽  
Identification And Characterization

scholarly journals Human enterovirus surveillance in the Slovak Republic from 2001 to 2011

2013 ◽  
Vol 141 (12) ◽  
pp. 2658-2662 ◽  
Author(s):  
C. KLEMENT ◽  
R. KISSOVA ◽  
V. LENGYELOVA ◽  
D. STIPALOVA ◽  
Z. SOBOTOVA ◽  
...  
Keyword(s):  
Slovak Republic ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Vaccination Strategy ◽  
Polio Eradication ◽  
World Health ◽  
Human Enterovirus ◽  
Isolation And Identification ◽  
Polio Vaccination

SUMMARYWe report the outcome of an 11-year programme monitoring sewage water and acute flaccid paralysis (AFP) cases as part of the World Health Organization (WHO) strategy for polio eradication in the Slovak Republic (SR). Polioviruses (PV) and non-polio enteroviruses (NPEV), prior to and after the change in polio vaccination strategy, were detected. Sewage treatment plant samples from 48 localities spread over the Western, Central and Eastern regions and clinical material from AFP cases were examined. The WHO standard procedures were followed with regard to virus isolation and identification. There were 538 commonly detected human enteroviruses (HEVs) including 213 (40%) coxsackie B viruses (CBV), 200 (37%) echoviruses and 113 (21%) Sabin-like PVs (PV1, 2, 3) including vaccine-derived poliovirus (VDPV) isolates. The percentage of PV isolates fell from 66% to 30% during 2001–2005 and thereafter fell to zero. CBV5, CBV2 and echovirus 3 were the NPEVs endemic during the study period.

scholarly journals Hydraulic Design of Sewage Treatment Plant for Junagadh Agricultural University Campus

2018 ◽  
Vol 13 (3) ◽  
pp. 472-480
Author(s):  
RAM VAIBHAV M ◽  
MAKWANA AJAY D. ◽  
D. S. THANKI
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Research Field ◽  
University Campus ◽  
New Schools ◽  
Recycled Water ◽  
Active Sludge ◽  
Hydraulic Design ◽  
Sludge Drying

The Junagadh Agricultural University campus is located in Junagadh, which lies in western Gujarat. The human population on the campus is multiplied distinctively due to the establishment of new schools and hostels.The university campus had a population of 1418 in the year 2013 when the supply of water was 152 lit/day per person and the sewage generation was 0.0084 m3/s (725.76 m3/day).Hence, a sewage treatment plant (STP) with suitable capacity is needed to deal with the elevated sewage. The recycled water can be utilized for agricultural purposes. This paper discusses about the design of STP and its major components such as skimming, grit chamber, and screening chamber, active sludge, sedimentation tank and secondary clarifier in the end sludge drying beds. The proposed design is suitable for 0.0672 m3/s sewage and would help to provide58 MLD process capacity. In the end, treated water will have been used for irrigation purpose in the research field of a university.

Progress in Characterization of Sludge Particles

1993 ◽  
Vol 28 (1) ◽  
pp. 145-148 ◽  
Author(s):  
E. Friedrich ◽  
H. Friedrich ◽  
W. Heinze ◽  
K. Jobst ◽  
H.-J. Richter ◽  
...  
Keyword(s):  
Surface Charge ◽  
Size Distribution ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Degradation Process ◽  
Laser Diffraction ◽  
Kinetics Of Degradation ◽  
Kinetics Of

The studies aimed at examining the influences of the particle size distribution and surface charge on the behaviour of sludge in dewatering. It was possible to show that defined size dispersions of sludge particles as well as surface charge are necessary to reach better dewatering results and that the found correlations were independent of the type of sludge and the sewage treatment plant (Friedrich et al., 1990 and 1991). Based on laser diffraction measurements to determine panicle size distribution it was found that it was necessary to set a specific proportion between fine and large sludge particles in order to produce the best possible dewatering results and to get the required shear resistant flocs. To characterize the surface charge of the sludge particles various measuring methods were used. Determining the zeta-potential is a suitable means to describe the kinetics of degradation process in the sludge.

Isolation and Identification of Nitrobacteria Adapted to Low Temperature

2012 ◽  
Vol 518-523 ◽  
pp. 406-410 ◽  
Author(s):  
Yun Hao ◽  
Xiu Guang Jiang ◽  
Qing Tian ◽  
Ai Yin Chen ◽  
Bao Ling Ma
Keyword(s):  
Low Temperature ◽  
Removal Efficiency ◽  
Nitrate Removal ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Ammonia Nitrogen ◽  
Aeration Tank ◽  
Isolation And Identification ◽  
Nitrification Process

In this study, a scientific method which can be used to improve nitrification process at low temperature in the sewage treatment plant was introduced. The activated sludge samples were taken from aeration tank of the sewage treatment plant when the outside temperature was below 0°C (water temperature below 12 °C). Five kinds of nitrobacteria strains with cold-resistance and higher activity of ammonia degradation were isolated from aeration tanks. The physiological properties showed the five strains were identified into Sphingobacteriaceae、Rhodanobacter sp.、Pseudomonas sp.、Pandoraea sp. and Perlucidibaca piscinae. All of the strains could convert ammonia-nitrogen or NO2- into NO3- in the medium at 10°C. The ammonia and nitrate removal efficiency could be reached 80.9% and 80.3% respectively. Comparing to the unvaccinated one, the removal efficiency can be increased by 50%, which proved the isolated nitrobacteria could be applied to biological nitrification process of sewage treatment at low-temperature.

scholarly journals Chemical characterization of vermicompost of sewage sludge with different proportions of diatomaceous material

2017 ◽  
Vol 21 (8) ◽  
pp. 519-523
Author(s):  
Fabíola M. Braga ◽  
Paulo H. S. Cardoso ◽  
Mário H. C. Barbosa ◽  
Márcio N. Rodrigues ◽  
Regynaldo A. Sampaio ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Environmental Sustainability ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Chemical Characterization ◽  
Biofuel Production ◽  
Eisenia Foetida ◽  
Organic Compost

ABSTRACT The pursuit for waste recovery has been the best way to contribute to environmental sustainability. The mix of sewage sludge (SS) from Sewage Treatment Plant with diatomaceous material containing oil (DE), used as a filter in biofuel production, can form a substrate rich in minerals and organic matter through vermicomposting. Therefore, this study aimed to produce vermicompost using worms, Eisenia foetida, from a pre-compost (PC) of sewage sludge and garden pruning residues mixed with different proportions of DE in relation to PC: 0; 7.53; 15.06; 22.59; and 30.12% v/v. The design was randomized complete blocks with five treatment replicates. The chemical characteristics of the vermicompost were analyzed after a period of four months. The proportion of up to 30.12% v/v of DE met the criteria established for agriculture uses, registration and marketing of the product as organic compost in accordance with the Normative Instructions SDA 27/2006 and 25/2009 from the Ministry of Agriculture.

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