scholarly journals One-year monthly survey of rotavirus, astrovirus and norovirus in three sewage treatment plants in Beijing, China and associated health risk assessment

2011 ◽  
Vol 63 (1) ◽  
pp. 191-198 ◽  
Author(s):  
X. Q. He ◽  
L. Cheng ◽  
D. Y. Zhang ◽  
X. M. Xie ◽  
D. H. Wang ◽  
...  
Keyword(s):  
Water Samples ◽  
Sewage Treatment ◽  
Exposure Dose ◽  
Cold Weather ◽  
Risk Level ◽  
Nested Polymerase Chain Reaction ◽  
Sewage Treatment Plants ◽  
Pcr Method ◽  
One Year ◽  
Beijing China

To evaluate the presence and distribution of the three main viruses (rotavirus, astrovirus, and norovirus) responsible for human acute gastroenteritis in sewerage system an one-year study was carried out in Beijing, China. A total of 96 samples of influent and effluents from three sewage treatment plants (STPs) were collected from November 2006 to October 2007. Silica was used to concentrate viral particles from water samples and a reverse transcriptase-nested polymerase chain reaction (RT-nested PCR) method was used for detection of viruses. Viruses could be detected in 35.4% (34/96) of the water samples analyzed, where human rotavirus was the most frequently detected (32.3%, 31/96), followed by human astrovirus (6.3%, 6/96) and human norovirus (3.1%, 3/96). According to the quantitation results of rotaviruses, which were gained by the real-time quantitative RT-PCR method with SYBR Green I , it was known that the distributions of rotaviruses in influents and effluents of three STPs were quite similar, i.e., abundant in cold weather (from October to March) and less prevalent in warm weather (from April to September). According to the estimated exposure dose, exposure frequency, as well as the acceptable annual risk level, it was shown that the rotaviruses in the reused wastewater after conventional treatment process presented potential risk to human health through both occupational and accidental exposure.

One-year monthly survey of rotavirus, astrovirus and norovirus in three sewage treatment plants (STPs) in Beijing, China and associated health risk assessment

2011 ◽  
Vol 64 (6) ◽  
pp. 1202-1210 ◽  
Author(s):  
X. Q. He ◽  
L. Cheng ◽  
D. Y. Zhang ◽  
X. M. Xie ◽  
D. H. Wang ◽  
...  
Keyword(s):  
Water Samples ◽  
Sewage Treatment ◽  
Exposure Dose ◽  
Cold Weather ◽  
Risk Level ◽  
Nested Polymerase Chain Reaction ◽  
Sewage Treatment Plants ◽  
Pcr Method ◽  
One Year ◽  
Beijing China

To evaluate the presence and distribution of the three main viruses (rotavirus, astrovirus, and norovirus) responsible for human acute gastroenteritis in sewerage systems, a one-year study was carried out in Beijing, China. A total of 96 samples of influent and effluents from three sewage treatment plants (STPs) were collected from November 2006 to October 2007. Silica was used to concentrate viral particles from water samples and a reverse transcriptase-nested polymerase chain reaction (RT-nested PCR) method was used for detection of viruses. Virus(es) could be detected in 35.4% (34/96) of the water samples analysed, where human rotavirus was the most frequently detected one (32.3%, 31/96), followed by human astrovirus (6.3%, 6/96) and human norovirus (3.1%, 3/96). According to the quantitation results of rotaviruses, which were gained by the real-time quantitative RT-PCR method with SYBR Green I, it was known that the distributions of rotaviruses in influents and effluents of three STPs were quite similar, i.e., abundant in cold weather (from October to March) and less prevalent in warm weather (from April to September). According to the estimated exposure dose and exposure frequency, as well as the acceptable annual risk level, it was shown that the rotaviruses in the reused wastewater after conventional treatment process presented potential risk to human health through both occupational and accidental exposure.

Occurrence of Selected Pharmaceuticals and Caffeine in Sewage Treatment Plants and Receiving Rivers in Beijing, China

2010 ◽  
Vol 82 (11) ◽  
pp. 2239-2248 ◽  
Author(s):  
Haidong Zhou ◽  
Chunying Wu ◽  
Xia Huang ◽  
Mijun Gao ◽  
Xianghua Wen ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
Beijing China

Distribution and elimination of polycyclic musks in three sewage treatment plants of Beijing, China

2009 ◽  
Vol 21 (5) ◽  
pp. 561-567 ◽  
Author(s):  
Haidong ZHOU ◽  
Xia HUANG ◽  
Mijun GAO ◽  
Xiaolin WANG ◽  
Xianghua WEN
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
Polycyclic Musks ◽  
Beijing China

scholarly journals Cryptosporidium Contamination and Attributed Risks in Yunlong Lake in Xuzhou, China

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Yadong Kong ◽  
Ping Lu ◽  
Tao Yuan ◽  
Jinghui Niu ◽  
Zhaoji Li ◽  
...  
Keyword(s):  
Water Samples ◽  
Environmental Protection Agency ◽  
Protozoan Parasite ◽  
The United States ◽  
Water Bodies ◽  
Risk Level ◽  
Sediment Samples ◽  
Risk Period ◽  
Substantial Risk ◽  
One Year

Swimming in surface water bodies (e.g., lakes, rivers) can expose the human body to substantial risk of infection by Cryptosporidium. These findings are from a one-year investigation on the occurrence and distribution of the protozoan parasite Cryptosporidium in Yunlong Lake, Xuzhou, China. Cryptosporidium oocysts were detected by immunofluorescence microscopy. From January to November of 2015, 180 samples (120 water samples and 60 sediment samples) were collected and analyzed. Among them, 42 (35%) water samples and 28 (47%) sediment samples tested positive for Cryptosporidium. The concentration of Cryptosporidium oocysts in the water samples was 0–8/10 L and 0–260/g in sediment samples. Results revealed that July was the highest risk period for both swimming and diving with an estimated probability of infection from swimming of greater than 18 per 10,000 swim sessions. It was concluded that swimming or diving in Yunlong Lake has a higher risk of Cryptosporidium infection than the acceptable risk level set by the United States Environmental Protection Agency. Thus, regular monitoring of water quality in recreation water bodies is strongly recommended.

scholarly journals Economic Evaluation on the Production of Poly-DADMAC and Sepiolite Nanocomposite

2021 ◽  
Vol 1 (1) ◽  
pp. 162-172
Author(s):  
Dita Ayu Rosmawati ◽  
◽  
Azzahra Annur Rizqia ◽  
Sifathul Jannah ◽  
Nissa Nur Azizah ◽  
...  
Keyword(s):  
Polymer Nanocomposites ◽  
Raw Materials ◽  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
The Third ◽  
Coagulation And Flocculation ◽  
Total Profit ◽  
Pre Treatment ◽  
Economic Perspectives ◽  
One Year

Some agricultural wastes are not suitable for direct disposal to standard sewage treatment plants and pre-treatment is required to avoid clogging by colloidal materials. One of the pre-treatment stages is coagulation and flocculation. In several studies, the mixture of polymer and clay fulfills the properties of coagulant and flocculant materials. A mixture of poly-DADMAC polymer and sepiolite clay can be used as a coagoflocculant at the same time. This study aims to analyze whether a project to manufacture clay polymer nanocomposites is feasible or not. By taking into account various perspectives including engineering and economic perspectives, this project is considered prospective to be carried out. This is indicated by the increase in the Profitability Index (PI) value of 5.33658 in the third year from -0.00975 which was the PI value the previous year. In twenty-four hours, the project can produce approximately 8.25 tonnes of adsorbent. The total profit earned in one year reaches 719,738.04 USD when run under ideal conditions. Apart from the results of the economic analysis mentioned, this project is also very effective in terms of time because it is simple and the raw materials needed are abundant

scholarly journals Occurrence of antibiotics in eight sewage treatment plants in Beijing, China

Chemosphere ◽  
2012 ◽  
Vol 86 (6) ◽  
pp. 665-671 ◽  
Author(s):  
Lihong Gao ◽  
Yali Shi ◽  
Wenhui Li ◽  
Hongyun Niu ◽  
Jiemin Liu ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
Beijing China

The activated-sludge fauna and performance of five sewage treatment plants in Beijing, China

2004 ◽  
Vol 40 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Shenggui Chen ◽  
Muqi Xu ◽  
Hong Cao ◽  
Jiang Zhu ◽  
Kexin Zhou ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
And Performance ◽  
Beijing China

scholarly journals CONTAMINATION OF WATER WITH HELMINTH EGGS: A CASE STUDY OF SOURANI DAM LAKE-TARTUS GOVERNORATE

2019 ◽  
pp. 3-5
Author(s):  
KANAAN AL-TAMEEMI ◽  
AMAL DAYOUB ◽  
MERVAT MAZLOOM
Keyword(s):  
Water Samples ◽  
Sewage Treatment ◽  
Taenia Saginata ◽  
Hymenolepis Nana ◽  
Sewage Treatment Plants ◽  
Helminth Eggs ◽  
Total Prevalence ◽  
Quality Of Water

Objective: In view of the serious prevalence of helminth and ease of infection, our research focuses on the detection of the prevalence of helminth eggs in the Sourani Dam Lake (Tartus governorate) water reflecting the health services and environmental circumstances in this region. Methods: The study was carried out on water samples of AL-Sourani Dam Lake with the aim to investigate the quality of water from October 2015 to September 2016 and verify the existence of helminth eggs according to their characteristics. Results: Our results showed a presence of helminth eggs such as Ascaris lumbricoides, Taenia saginata, and Hymenolepis nana in water samples. The total prevalence was 1.57 egg/L. T. saginata eggs were the most prevalent, followed by the eggs of A. lumbricoides, while the eggs of H. nana were the least prevalent, especially in summer and autumn. Conclusion: Due to the presence of helminth eggs in samples, it is recommended that sewage treatment plants be established and that health awareness be increased to decrease their prevalence.

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