Fluence's technology is used to improve water quality of China's Yangtze River

2020 ◽  
Vol 2020 (7) ◽  
pp. 2
Keyword(s):  
Water Quality ◽  
Yangtze River ◽  
Improve Water Quality

scholarly journals Use of Duckweed, Bentonite and Acid to Improve Water Quality of Effluent Discharge from Abattoirs

2004 ◽  
Vol 17 (8) ◽  
pp. 1168-1176 ◽  
Author(s):  
J. P. Goopy ◽  
P. J. Murray ◽  
A. T. Lisle ◽  
R. A. M. Al Jassim
Keyword(s):  
Water Quality ◽  
Improve Water Quality ◽  
Effluent Discharge

The Polluter Pays Principle in Chinese Environmental Law

2018 ◽  
Vol 2 (1) ◽  
pp. 57-82
Author(s):  
Evan HAMMAN ◽  
Liping PEI ◽  
Denise BURLOFF ◽  
Alexandra LOCKHART
Keyword(s):  
Water Quality ◽  
Sustainable Development ◽  
Yangtze River ◽  
Environmental Law ◽  
River Pollution ◽  
Chinese City ◽  
Effective Implementation ◽  
Polluter Pays Principle ◽  
Improve Water Quality

Abstract The effective implementation of environmental law has taken on greater urgency in recent times. Behind the multitude of domestic and international environmental instruments sit generally accepted principles like the Polluter Pays Principle (PPP). The PPP can be seen to advance sustainable development, at least partly, by private operators internalizing the costs of their pollution. This article analyses the application of the PPP in Chinese environmental law by focusing on a case study of Yangtze River pollution in and around the central Chinese city of Wuhan. The authors find evidence of an increasing acceptance of the PPP at the local, regional and national levels in China. At each of these levels, attempts to improve water quality in the Yangtze appear to reflect an acceptance of the PPP’s main aims.

scholarly journals Water quality evaluation based on the water quality index method in Honghu Lake: one of the largest shallow lakes in the Yangtze River Economic Zone

2020 ◽  
Vol 20 (6) ◽  
pp. 2145-2155
Author(s):  
Libin Chen ◽  
Zhuo Tian ◽  
Kaipeng Zou
Keyword(s):  
Water Quality ◽  
Shallow Lakes ◽  
Water Quality Index ◽  
Yangtze River ◽  
Quality Index ◽  
The Yangtze River ◽  
Index Method ◽  
Honghu Lake ◽  
Economic Zone

Abstract Honghu Lake is the largest lake-type wetland in Hubei Province, China. It is also one of the largest shallow lakes in the Yangtze River Economic Zone, a key area in the relatively more developed southeast of China. However, the water quality has seen a deterioration tendency in recent decades, mostly owing to unreasonable human activities such as lake enclosure aquaculture following rapid social and economic development. Based on the water quality index (WQI) method, the water quality of Honghu Lake, by the vast amount of data collected from five observation sites monitored over ten years, was analyzed and evaluated. The results show that: (i) the water quality of Honghu Lake is in the ‘General’ grade as a whole with a WQI value of 43.41 ± 6.66; (ii) the water quality has been improving in the recent two years, reversing its decade-long deterioration; (iii) the water quality sampled at the Lantian site is the worst while that of the Guandun site is the best; (iv) the concentration of Pb and Cd are the key parameters to determine the water quality of Honghu Lake. Therefore, it can be concluded that more attention should be paid to investigate heavy metals in Honghu Lake in the future.

Numerical Study on the Impact of the Sewage Drainage on Water Quality of Shanghai Water Sources

2012 ◽  
Vol 433-440 ◽  
pp. 1020-1026 ◽  
Author(s):  
Jie Gu ◽  
Wen Ting Li ◽  
Jing Huang ◽  
Bing Han
Keyword(s):  
Water Quality ◽  
Yangtze River ◽  
Numerical Study ◽  
Water Source ◽  
The Yangtze River ◽  
The South ◽  
Tidal Period ◽  
High Pollution ◽  
The Impact

A 2D current and water quality model was set up with Delft3D-FLOW in this research, which was well calibrated and verified with the observed tidal levels and velocities. Considered with the project of the Qingcaosha Water Source, Pollution concentration distribution caused by sewage outfalls in the south bank of the Yangtze River during a neap tide of dry season is simulated and the computed results show: a high pollution zone appears near the south shore, and moves upward with flood flow and downward with ebb flow, however, it is bounded a limit region around the outfalls. During the tidal period, the water quality of the Qingcaosha water source can be classified as the second class water, which can ensure the normal water supply as the Shanghai water source. It is suggested that the regular monitoring water quality in this high pollution zone should be put into practice to ensure the water quality of water sourecs. The Yangtze River is adjacent to the East Sea and it’s the largest river in China, with obvious seasonal variant runoff and tidal flow. The Yangtze River was bifurcated by Chongming Island to south and north branch from Xuliujing, most of the flow go down through the south branch. The south branch was divided into south and north channel by Changxing Island and Hengsha Island. The south channel was bifurcated by Jiuduansha Shoal to south and north passage, three bifurcation areas and four estuarine outlets were formed (see Fig 1.)

scholarly journals Impact of Yangtze River Water Transfer on the Water Quality of the Lixia River Watershed, China

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0119720 ◽  
Author(s):  
Xiaoxue Ma ◽  
Lachun Wang ◽  
Hao Wu ◽  
Na Li ◽  
Lei Ma ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Yangtze River ◽  
Water Transfer ◽  
River Watershed

scholarly journals A framework to diagnose factors influencing proenvironmental behaviors in water-sensitive urban design

2018 ◽  
Vol 115 (33) ◽  
pp. E7690-E7699 ◽  
Author(s):  
Jacki Schirmer ◽  
Fiona Dyer
Keyword(s):  
Water Quality ◽  
Urban Design ◽  
Life Stage ◽  
Human Behaviors ◽  
Factors Influencing ◽  
Quality Of Water ◽  
Water Sensitive Urban Design ◽  
Improve Water Quality

The ongoing challenge of maintaining and improving the quality of water that leaves urban stormwater systems is often addressed using technical rather than social solutions. The need for investment in often expensive water infrastructure can be reduced through better investing in promoting human behaviors that protect water quality as part of water-sensitive urban design (WSUD) initiatives. Successfully achieving this requires understanding factors that influence adoption of proenvironmental behaviors. We review past studies examining this topic and identify that factors influencing adoption of proenvironmental behaviors relevant to WSUD commonly fall into four domains: proenvironmental values and norms, awareness and knowledge of environmental problems and the actions that can address them, proximity and place-based identity, and life-stage and lifestyle factors. We propose the VAIL (values, awareness, identify, lifestyle) framework, based on these four domains and able to be contextualized to specific water-quality problems and individual communities, to assist in diagnosing factors influencing adoption of proenvironmental behaviors. We demonstrate the applicability of the framework in a case study examining adoption of gardening practices that support water quality in Canberra, Australia. We developed 22 locally relevant VAIL indicators and surveyed 3,334 residents to understand engagement in four water-friendly gardening behaviors that help improve water quality in local lakes. In regression modeling, the indicators explained a significant amount of variance in these behaviors and suggested avenues for supporting greater adoption of these behaviors. Predictor variables across all four VAIL domains were significant, highlighting the importance of a multidomain framework.

scholarly journals Use of Chemical and Biological Agents to Improve Water Quality of Effluent Discharge from Abattoirs

2004 ◽  
Vol 17 (1) ◽  
pp. 137-145
Author(s):  
J. P. Goopy ◽  
P. J. Murray ◽  
A. T. Lisle ◽  
R. A. M. Al Jassim
Keyword(s):  
Water Quality ◽  
Biological Agents ◽  
Improve Water Quality ◽  
Effluent Discharge

scholarly journals Spatiotemporal Characteristics of the Water Quality and Its Multiscale Relationship with Land Use in the Yangtze River Basin

2021 ◽  
Vol 13 (16) ◽  
pp. 3309
Author(s):  
Jian Wu ◽  
Sidong Zeng ◽  
Linhan Yang ◽  
Yuanxin Ren ◽  
Jun Xia
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Temporal Variation ◽  
Yangtze River ◽  
Stream Water ◽  
Yangtze River Basin ◽  
The Yangtze River ◽  
Stream Water Quality ◽  
The Yangtze River Basin

The spatiotemporal characteristics of river water quality are the key indicators for ecosystem health evaluation in basins. Land use patterns, as one of the main driving forces of water quality change, affect stream water quality differently with the variations in the spatiotemporal scales. Thus, quantitative analysis of the relationship between different land cover types and river water quality contributes to a better understanding of the effects of land cover on water quality, the landscape planning of water quality protection, and integrated water resources management. Based on water quality data of 2006–2018 at 18 typical water quality stations in the Yangtze River basin, this study analyzed the spatial and temporal variation characteristics of water quality by using the single-factor water quality identification index through statistical analysis. Furthermore, the Spearman correlation analysis method was adopted to quantify the spatial-scale and temporal-scale effects of various land uses, including agricultural land (AL), forest land (FL), grassland (GL), water area (WA), and construction land (CL), on the stream water quality of dissolved oxygen (DO), chemical oxygen demand (CODMn), and ammonia (NH3-N). The results showed that (1) in terms of temporal variation, the water quality of the river has improved significantly and the tributaries have improved more than the main rivers; (2) in the spatial variation respect, the water quality pollutants in the tributaries are significantly higher than those in the main stream, and the concentration of pollutants increases with the decrease of the distance from the estuary; and (3) the correlation between DO and land use is low, while that between NH3-N, CODMn, and land use is high. CL and AL have a negative effect on water quality, while FL and GL have a purifying effect on water quality. In particular, AL and CL have a significant positive correlation with pollutants in water. Compared with NH3-N, CODMn has a higher correlation with land use at a larger scale. The results highlight the spatial scale and seasonal dependence of land use on water quality, which can provide a scientific basis for land management and seasonal pollution control.

Penambahan Konsentrasi Molase Berbeda Untuk Perbaikan Kualitas Air dan Produksi Udang Vaname (Litopeneus vannamei) (Boone 1931)

2021 ◽  
Vol 10 (1) ◽  
pp. 60-68
Author(s):  
Andri Hendriana ◽  
Wiyoto ◽  
Wida Lesmanawati
Keyword(s):  
Water Quality ◽  
Optimal Concentration ◽  
Production Performance ◽  
Water Salinity ◽  
Improve Production ◽  
Quality Of Water ◽  
Feed Control ◽  
Improve Water Quality

ABSTRACTThe research was conducted to determine the most optimal concentration of molasses in maintaining the quality of water and increasing the production performance of vannamei shrimp. The study used 4 different molasses concentration treatments with 4 replications, consisted of (A) 50% molasses concentration of the total feed, (B) 100% of the total feed, (C) 150% of the total feed, and (K) 0% of the total feed (control). Molasses was given every day for 40 days by mixing it directly into the test shrimp’s rearing media (PL 12). Throughout the rearing, the treatment of various concentrations of molasses did not affect temperature, DO, pH and water salinity parameters, but had a tendency to improve water quality by reducing TAN and nitrite values. Molasses can also significantly improve production performance. The best concentration of molasses is 150% of the total feed (treatment C), which resulted in a biomass weight of 293.05 ± 5.57 g with an LPS value of 6,08 ± 0,03%/day and an FCR of 2,23 ± 0,05. ABSTRAKPenelitian dilakukan untuk mengetahui konsentrasi molase yang paling optimal dalam mempertahankan kualitas air pemeliharaan dan meningkatkan kinerja produksi udang vaname. Penelitian terdiri dari 4 perlakuan konsentrasi molase berbeda dengan 4 ulangan yaitu (A) konsentrasi molase 50% dari jumlah jumlah pakan, (B) 100% jumlah pakan, (C) 150% jumlah pakan, dan (K) 0% jumlah pakan (kontrol). Molase diberikan setiap hari selama 40 hari dengan cara dicampurkan langsung ke media pemeliharaan udang uji (PL 12). Perlakuan pemberian molase berbagai konsentrasi tidak mempengaruhi parameter suhu, DO, pH dan salinitas air selama pemeliharaan udang namun memiliki kecenderungan memperbaiki kualitas air dengan menurunkan nilai TAN dan nitrit. Pemberian molase secara nyata mampu meningkatkan kinerja produksi. Pada perlakuan tanpa pemberian molase (Kontrol) dihasilkan bobot biomasa sebesar 149,36±20,36 g dengan nilai LPS sebesar 4,87±0,19 dan FCR sebesar 3,40±0,55.  Konsentrasi molase terbaik yaitu 150% dari jumlah pakan (perlakuan C) menghasilkan bobot biomasa sebesar 293,05±5,57 g dengan nilai LPS sebesar 6,08±0,03% dan FCR sebesar 2,23±0,05. Kata kunci : kinerja produksi, kualitas air, molase, udang vaname Litopeneus vannamei

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