scholarly journals Seasonal Variation in Physico-Chemical and Microbiological Characteristics of Sewage Water from Sewage Treatment Plants

2016 ◽  
Vol 11 (3) ◽  
pp. 791-799
Author(s):  
Karthika Velusamy ◽  
J Kannan
Keyword(s):  
Treatment Process ◽  
State Of The Art ◽  
Sewage Treatment ◽  
Total Coliform ◽  
Sewage Water ◽  
Sampling Point ◽  
Total N ◽  
Sewage Treatment Plants ◽  
Microbiological Characteristics ◽  
Physico Chemical

The present research deals with the study of physico-chemical and bacteriological characteristics of sewage water collected from three different sites of Coimbatore during two consecutive seasons. Seasonal variations indicated that the most of the nutrients (viz., total N, phosphates) and salts (nitrates, chlorides and sulphates) are present abundantly at pre-monsoon and the physical characters like TSS (600 mg/L) are more at post-monsoon. Multiple comparisons made using analysis of variance showed that the Ukkadam sampling point varies significantly from other two points. The total coliform count for the Ukkadam samples were >2400 (MPN/100ml) in raw sewage. This study concludes that the physicochemical characters and microbiological characters are outrageous in the raw sewage and upon the treatment the undesirable characters are reduced. Studies on the sewage characteristics of treatment plants are crucial to know the pollutant levels upon the various time scales and the treatment status which is necessary to improve the state of the art of the treatment process.

Occurrence and elimination of antibiotics at four sewage treatment plants in Japan and their effects on bacterial ammonia oxidation

2009 ◽  
Vol 59 (4) ◽  
pp. 779-786 ◽  
Author(s):  
Gopal Chandra Ghosh ◽  
Takashi Okuda ◽  
Naoyuki Yamashita ◽  
Hiroaki Tanaka
Keyword(s):  
Oxygen Uptake ◽  
Nalidixic Acid ◽  
Removal Efficiency ◽  
Treatment Process ◽  
Ammonia Oxidation ◽  
Oxygen Uptake Rate ◽  
Sewage Treatment ◽  
Secondary Treatment ◽  
Mixed Condition ◽  
Sewage Treatment Plants

The occurrence and elimination of seventeen antibiotics (three macrolides: azithromycin, clarithromycin and roxithromycin; five quinolones: ciprofloxacin, enrofloxacin, levofloxacin, nalidixic acid and norfloxacin; five sulfonamides: sulfadimethoxine, sulfadimizine, sulfamerazine, sulfamethoxazole and sulfamonomethoxine; and others: tetracycline, lincomycin, salinomycin and trimethoprim) were investigated at four full-scale sewage treatment plants in Japan. The highest concentration was recorded for clarithromycin (1,129 to 4,820 ng/L) in influent, followed by azithromycin (160 to 1,347 ng/L), levofloxacin (255 to 587 ng/L) and norfloxacin (155 to 486 ng/L). A vary inconsistence picture was obtained with negative to over 90% removal. Nalidixic acid (53 to100%) exhibited higher removal efficiency followed by norfloxacin (75 to 95%), levofloxacin (40 to 90%), ciprofloxacin (60 to 83%) and enrofloxacin (38 to 74%). Among macrolides, clarithromycin (50 to 88%) and azithromycin (34 to 86%) showed relatively higher removal efficiency than roxithromycin (−32 to 59%). For most of the antibiotics removal efficiency was higher in A2O and AO based secondary treatment process than CAS process. The effect of the antibiotics on bacterial ammonia oxidation determined by oxygen uptake rate presented that there was no significant effect below 0.05 mg/L of each antibiotics. Even at the same concentration, antibiotics in mixed condition had higher inhibition effects than individuals.

scholarly journals The Physico-Chemical Quality of Effluents of Selected Sewage Treatment Plants Draining into River Rwizi, Mbarara Municipality, Uganda

2019 ◽  
Vol 11 (01) ◽  
pp. 20-36 ◽  
Author(s):  
Jeninah Atwebembeire ◽  
Morgan Andama ◽  
Jane Yatuha ◽  
Julius Bunny Lejju ◽  
Grace Kagoro Rugunda ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Chemical Quality ◽  
Sewage Treatment Plants ◽  
Physico Chemical

scholarly journals Fundamental Research on Effect of Sewage Treatment Process on Biological Impacts against Aquatic Organisms by Sewage Water

2015 ◽  
Vol 51 (4) ◽  
pp. 95-103 ◽  
Author(s):  
FUMIHIKO TAKEDA ◽  
HIROYUKI MANO ◽  
TOMOKAZU KITAMURA ◽  
KOYA KOMORI ◽  
SEIICHIRO OKAMOTO
Keyword(s):  
Treatment Process ◽  
Sewage Treatment ◽  
Aquatic Organisms ◽  
Sewage Water ◽  
Biological Impacts ◽  
Fundamental Research

scholarly journals Tropheryma whipplei in the Environment: Survey of Sewage Plant Influxes and Sewage Plant Workers

2007 ◽  
Vol 73 (6) ◽  
pp. 2033-2035 ◽  
Author(s):  
Maximilian Schöniger-Hekele ◽  
Dagmar Petermann ◽  
Beate Weber ◽  
Christian Müller
Keyword(s):  
Disease Control ◽  
Sewage Treatment ◽  
Sewage Water ◽  
Tropheryma Whipplei ◽  
Healthy Individuals ◽  
Sewage Treatment Plants ◽  
Sewage Plant ◽  
Dental Plaques

ABSTRACT We studied the prevalence of Tropheryma whipplei in influxes to 46 sewage treatment plants and in stool, mouthwash fluids, and dental plaques of 64 healthy workers in those facilities and 146 disease control patients. T. whipplei was found in sewage water, in stool of healthy individuals, and significantly more often in stool of workers exposed to sewage water.

scholarly journals Study of Physico-chemical and Biological Characteristics of the Water of River Ganga at Patna, India

2018 ◽  
Vol 13 (3) ◽  
pp. 374-379 ◽  
Author(s):  
KUMARI SATYA ◽  
CHANDRAVIR NARAYAN
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Total Coliform ◽  
Coliform Bacteria ◽  
Quality Of Water ◽  
Physico Chemical ◽  
Indian Central ◽  
River Ganga ◽  
The City

River Ganga arises on the southern slopes of the Indian central Himalayan region beginning the Gangotri glacier. The river covers catchment area of 8, 61,404 km2 and its total length in the state Bihar stretch is 475 km. This study was carried out at Patna in the river Ganga at two sampling sites, viz., Digha Ghat (upstream) and Gai Ghat (downstream). The objective of the study was to observe the eminence of water of Ganga at Patna. The results that indicate that the river reaches near the city of Patna (upstream at Digha Ghat) are less polluted with pH 7.75, DO 7.42 mg/l, BOD 2.48 mg/l and COD 15.12 mg/l, while when the river leaves city after travelling 18 km (downstream at Gai Ghat), concentration of all pollutants increases significantly (pH 6.28, DO 6.22 mg/l, BOD 2 mg/l and COD 23 mg/l). The concentration of coliform bacteria (total coliform ranges from 5000 to 6000 MPN/100ml and faecal coliform ranges from 2200 MPN/100ml and 3000 MPN/100ml at both the sites) was recorded at higher level than the upper limit of the permissible level. This increment may be due to domestic and sewage discharge from the city. The municipality of Patna has sewage treatment plant capacity of about 109 MLD but whereas the city generates approximately 250 MLD sewage/township discharge. For the maintenance of pristine quality of water of the river Ganga, the sewage need be treated before discharge

Research Progress: Reduction of Excess Sludge by Ozone in the Sewage Biotreatment Process

2012 ◽  
Vol 610-613 ◽  
pp. 2410-2415
Author(s):  
Ya Feng Nie ◽  
Cai Hong Lu ◽  
Bo Liu ◽  
Xiu Wen Qu ◽  
Xiao Bo Bai
Keyword(s):  
Activated Sludge ◽  
Treatment Process ◽  
Sewage Treatment ◽  
Research Progress ◽  
Excess Sludge ◽  
Research Directions ◽  
Sewage Treatment Plants

The principle for the reduction of excess sludge by the ozone in the sewage treatment plants (STPs) was introduced and the change of characteristics of the ozonated sludge was analyzed in this paper. Furthermore, the effects of ozonation of activated sludge on the biotical treatment process in the STP were summarized. At last, the applications of this kind of technology in the worldwide range were enumerated and some further research directions were suggested.

scholarly journals Characterization of Biological Quality Parameters of Sewage Water in the Sewage Treatment Plants of Madurai Municipal Corporation

2020 ◽  
Vol 9 (11) ◽  
pp. 1951-1957
Author(s):  
J. Prabhaharan ◽  
R. Uma Sankareshwari ◽  
K. Kalaichelvi ◽  
N.K. Sathyamoorthy ◽  
T. Ragavan ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Water ◽  
Quality Parameters ◽  
Sewage Treatment Plants ◽  
Biological Quality

Seasonal movement of trace-element discharge in a typical south-Indian suburban community

2017 ◽  
Vol 77 (4) ◽  
pp. 1035-1047 ◽  
Author(s):  
Derrick Ian Joshua ◽  
Sumith Abeykoon ◽  
Izumi Watanabe ◽  
Lucyna Paszek ◽  
Keshava Balakrishna ◽  
...  
Keyword(s):  
Treatment Process ◽  
Major Ions ◽  
Sewage Treatment ◽  
Anthropogenic Input ◽  
Sewage Treatment Plants ◽  
Seasonal Movement ◽  
Conventional Activated Sludge ◽  
South Indian ◽  
Pass Through ◽  
Wastewater Samples

Abstract Four conventional activated sludge sewage treatment plants (STPs) in Southern India were chosen to investigate the occurrence of major ions and trace metals in dissolved fraction of the wastewater. Samples were collected from inlet and outlet of STPs during the pre-monsoon and monsoon seasons. Except for a few elements (Mn, Mo and Ni), the concentrations of the rest increased at the outlet of STPs, suggesting that there is an addition of these elements during the treatment process. The increase in concentrations at the STP outlet ranged from 1.25 times for Mn to 3,254 times for Ag during the pre-monsoon. In the monsoon, the increase ranged from 1.75 (Fe) to 1,510 (Ag). This suggests that there is a substantial anthropogenic input of these elements as they pass through the treatment process. Removal rates of elements in STPs also varied. 59% of Mn was removed during the treatment process during pre-monsoon as compared to 67% removal during monsoon.

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