scholarly journals Influence of reclaimed water on water quality of urban rivers receiving WWTP effluent in Beijing

2021 ◽  
Vol 826 (1) ◽  
pp. 012005
Author(s):  
X Zhao ◽  
P Zhang ◽  
W Wu ◽  
K Li ◽  
X Liu ◽  
...  
Keyword(s):  
Water Quality ◽  
Reclaimed Water ◽  
Urban Rivers ◽  
Wwtp Effluent

scholarly journals Ecological assessment of water quality in an urban river replenished with reclaimed water: the phytoplankton functional groups approach

2021 ◽  
Author(s):  
Liying Zhu ◽  
Yuanyuan Chen ◽  
Yawei Wang ◽  
Chunrong Wang ◽  
Yuansong Wei
Keyword(s):  
Water Quality ◽  
Reclaimed Water ◽  
Ecological Status ◽  
Ecological Assessment ◽  
Dry Season ◽  
Urban Rivers ◽  
Wet Season ◽  
The North ◽  
Phytoplankton Functional Groups

Abstract Comprehensive water quality assessment plays a vital role in decision making for the sustainable management of urban rivers, and thus the exploration of integrated ecological assessment methods for water quality has become a major requirement. This study assessed the water quality of the North Canal River on the basis of its ecological status using the phytoplankton functional groups (PFGs) approach. The river runs through the megacities of the Beijing-Tianjin-Hebei region in China, and is mainly replenished with reclaimed water. The results showed that the PFGs approach is much better for evaluating the water quality of urban rivers than the conventional physicochemical index method and phytoplankton diversity metrics, because the PFGs approach is more sensitive to the spatiotemporal variations in the water quality of urban rivers. The average Qr index, for ecological status estimation in rivers, based on the PFGs of the North Canal River was 3.30, indicating “good” water quality. In the dry season, the dominant PFG upstream was group D (Cyclotella spp.), whereas the major downstream PFGs had changed to group Y (Glenodinium spp., Cryptomonas ovata, and Cryptomonas erosa) and W1 (Euglena spp. and Gonium pectoral). While the dominant PFG throughout the river changed to TB: Melosira spp. in the wet season. The Qr at each site was one to two grades lower during the wet season than the dry season, indicating that water quality was worse in the wet than the dry season.

Water quality of reclaimed water from treated urban wastewater in Chaobai River Basin, North China

2014 ◽  
Vol 12 (2) ◽  
pp. 103-109 ◽  
Author(s):  
Yilei Yu ◽  
Xianfang Song ◽  
Yinghua Zhang ◽  
Fandong Zheng ◽  
Licai Liu
Keyword(s):  
Water Quality ◽  
River Basin ◽  
North China ◽  
Reclaimed Water ◽  
Urban Wastewater

Maximizing the Benefits of Reclaimed Water for Irrigating the Landscape and Protecting the Environment

EDIS ◽  
2013 ◽  
Vol 2013 (11) ◽  
Author(s):  
George Hochmuth ◽  
Laurie Trenholm ◽  
Don Rainey ◽  
Esen Momol ◽  
Claire Lewis ◽  
...  
Keyword(s):  
Water Quality ◽  
Environmental Protection Agency ◽  
Water Reuse ◽  
Municipal Wastewater ◽  
Reclaimed Water ◽  
Water Efficiency ◽  
Protection Agency ◽  
National Leader ◽  
Soil And Water

Reclaimed water is water that has been treated in municipal wastewater facilities and is safe to use for designated purposes, including residential landscape irrigation. “Water reuse” is the term used to describe the beneficial application of reclaimed water. Approximately 663 million gallons of reclaimed water are used daily in Florida. Florida is a national leader in using reclaimed water, and in 2006 Florida’s reuse program received the first U.S. Environmental Protection Agency Water Efficiency Leader Award. Using reclaimed water in Florida meets a state objective for conserving freshwater supplies, and preserves the water quality of rivers, streams, lakes, and aquifers. This publication discusses the benefits of using reclaimed water to irrigate the landscape and explains how using reclaimed water helps to protect the environment. This 4-page fact sheet was written by George Hochmuth, Laurie Trenholm, Don Rainey, Esen Momol, Claire Lewis, and Brian Niemann, and published by the UF Department of Soil and Water Science, November 2013. http://edis.ifas.ufl.edu/ss587

Reclaimed municipal wastewater - a potential water resource in China

2001 ◽  
Vol 43 (10) ◽  
pp. 51-58 ◽  
Author(s):  
He Pinjing ◽  
L. Phan ◽  
Gu Guowei ◽  
G. Hervouet
Keyword(s):  
Water Quality ◽  
Water Resource ◽  
Water Reuse ◽  
Municipal Wastewater ◽  
Wastewater Reuse ◽  
Reclaimed Water ◽  
Socio Economic Development ◽  
Industrial Use ◽  
Resource Shortage

Due to water resource shortage and socio-economic development within twenty years, China faces serious problems of water supply and water pollution. Several criteria and suitable reclamation processes related to water reuse have been created in China, which are helpful to improve the situation of water scarcity. In the future, reclaimed municipal wastewater reuse will mainly be developed for urban and industrial use. Potential supply quantity of reclaimed water, quality of reclaimed water, and reclamation cost are favorable to potential reuses. Based on further public environmental education, on a relevant development of national and local standards for reclaimed water quality, and on an increase of sanitary rate, more and more planned reclaimed water reuse projects would be expected in China.

Spatial and temporal variations of water quality in an artificial urban river receiving WWTP effluent in South China

2015 ◽  
Vol 73 (6) ◽  
pp. 1243-1252 ◽  
Author(s):  
Di Zhang ◽  
Yi Tao ◽  
Xiaoning Liu ◽  
Kuiyu Zhou ◽  
Zhenghao Yuan ◽  
...  
Keyword(s):  
Water Quality ◽  
Reclaimed Water ◽  
Treatment Plant ◽  
Organic Pollution ◽  
Temporal Variations ◽  
Urban River ◽  
Spatial And Temporal Variations ◽  
Pollution Load ◽  
Nitrogen And Phosphorus ◽  
Wwtp Effluent

Urban wastewater treatment plant (WWTP) effluent as reclaimed water provides an alternative water resource for urban rivers and effluent will pose a significant influence on the water quality of rivers. The objective of this study was to investigate the spatial and temporal variations of water quality in XZ River, an artificial urban river in Shenzhen city, Guangdong Province, China, after receiving reclaimed water from WWTP effluent. The water samples were collected monthly at different sites of XZ River from April 2013 to September 2014. Multivariate statistical techniques and a box-plot were used to assess the variations of water quality and to identify the main pollution factor. The results showed the input of WWTP effluent could effectively increase dissolved oxygen, decrease turbidity, phosphorus load and organic pollution load of XZ River. However, total nitrogen and nitrate pollution loads were found to remain at higher levels after receiving reclaimed water, which might aggravate eutrophication status of XZ River. Organic pollution load exhibited the lowest value on the 750 m downstream of XZ River, while turbidity and nutrient load showed the lowest values on the 2,300 m downstream. There was a higher load of nitrogen and phosphorus pollution in the dry season and at the beginning of wet season.

scholarly journals EVALUATING FUTURE WATER QUALITY OF URBAN RIVERS IN HANOI UNDER EFFECT OF URBANIZATION AND CLIMATE CHANGE - THE APPLICATION OF WEAP MODEL FOR CAU BAY RIVER

2020 ◽  
Vol 58 (3A) ◽  
pp. 195
Author(s):  
Lan Huong Nguyen ◽  
Viet Nga Thi Tran
Keyword(s):  
Climate Change ◽  
Water Quality ◽  
Treatment Plant ◽  
Dry Season ◽  
Capital City ◽  
Master Plan ◽  
Urban Rivers ◽  
Water Drainage ◽  
Wet Season

Every day, up to 750,000 cubic meters of wastewater in Hanoi metropolitan areas is discharged directly into rivers and lake, of which only 10% is treated to the Vietnamese standards. According to the water drainage development master plan for the capital city of Hanoi until 2030, the government aim at dealing with flooding and improve environmental sanitation for local residents. With respect to the baseline and Master plan implementation scenarios, this study evaluates the future water quality of urban rivers in Hanoi under the effect of urbanization and climate change using Water Evaluation And Planning tool (WEAP) and take the Cau Bay catchment as the case study. The result shows that, without implementation of wastewater treatment plant, the water quality of Cau Bay River will be worse with the DO in dry season is 0.2-1.2 mg/l and BOD is 52.0-55.0 mg/l. With the implementation of Master plan, the level of DO and BOD would be 7.1-7.3 mg/l and 7.0-13.8 mg/l respectively in the dry season whereas the values are 3.7 mgO/l and 36.1-41.8 mg/l in the wet season. The degradation of wastewater during the wet season is results from the combine- overflow sewage system as designed in the master plan.

scholarly journals Considering Water Quality of Urban Rivers from the Perspectives of Unpleasant Odor

2018 ◽  
Vol 10 (3) ◽  
pp. 650 ◽  
Author(s):  
Yukako Sado-Inamura ◽  
Kensuke Fukushi
Keyword(s):  
Water Quality ◽  
Urban Rivers ◽  
Unpleasant Odor

scholarly journals Vulnerability Assessment and Application of Bacterial Technology on Urban Rivers for Pollution Eradication

2015 ◽  
Vol 2015 ◽  
pp. 1-11
Author(s):  
Sarfraz Hashim ◽  
Xie Yuebo ◽  
Fiaz Ahmad ◽  
Chaudhry Arslan ◽  
Muhammad Saifullah
Keyword(s):  
Water Quality ◽  
Point Source ◽  
Oxygen Demand ◽  
Principal Component ◽  
Aquatic Organism ◽  
Ammonia Nitrogen ◽  
Complex Data ◽  
Urban Rivers ◽  
Source Information

To protect against the environmental pollution, the present research was undertaken to enumerate the Bacterial Technologies (BTs) on the restoration of polluted urban rivers, that is, Fenghu-Song Yang River (FSR) and Xuxi River (XXR). Experimental research accounted for the physiochemical parameters (pH; temperature; dissolved oxygen (DO); chemical oxygen demand (COD); total phosphorus (TP); total nitrogen (TN); and ammonia nitrogen (NH3N)) before and after the BT operation. The results declared that the BT is efficient to restore the polluted rivers up to reliable condition. These results were analyzed by using multivariate statistical techniques (principal component analysis (PCA) and cluster analysis (CA)). These techniques interpreted the complex data sets and expressed the point source information about the water quality of these rivers at SA5, SA6, and SB3 under highly polluted regions. For better understanding, water quality index (WQI) was applied to compute the single numeric value. WQI results are evidence of the above results which prove the water quality of both rivers faced under outrageous condition (below 50 WQI scores) before the BT treatment, but, after the treatment, the rivers were restored from fair to good level (above 50 WQI scores) and overall output of these scores was quite similar to detect the point source of pollution. These results described an abrupt recovery of the urban rivers up to reliable condition for aquatic organism and clear effluents from the rivers.

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