Water environment change over the period 2007-2016 and the strategy of fishery improve the water quality of Lake Taihu

The quality of environmental waters such as rivers is often deteriorated by various kinds of trace and unidentified chemicals despite the recent development of sewage systems and wastewater treatment technologies. In addition to contamination by particular toxicants, complex toxicity due to multi-component chemicals could be much more serious. The environmental situation in bodies of water in Japan led us to apply bioassays for monitoring the water quality of environmental waters in order to express the direct and potential toxicity to human beings and ecosystems rather than determinating concentrations of particular chemicals. However, problems arose from the fact that bioassays for pharmaceutical purposes generally required complicated, time-consuming, expert procedures. Also, a methodology for feedback of the resultant toxicity data to water environment management has not been established yet. To this end, we developed a novel bioassay based on the low-density lipoprotein (LDL) uptake activity of human hepatoblastoma cells. The assay enabled us to directly detect the toxicity of environmental waters within 4 hours of exposure. This is a significantly quick and easy procedure as compared to that of conventional bioassays. The toxicity data for 255 selected chemicals and environmental waters obtained by this method were organized by a mathematical equation in order to make those data much more effectively and practically useful to the management of environmental waters. Our methodology represents a promising example of applying bioassays to monitor environmental water quality and generating potential solutions to the toxicity problems encountered.

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Development and evaluation of the Lake Multi-biotic Integrity Index for Dongting Lake, China

Journal of Limnology ◽

10.4081/jlimnol.2015.1186 ◽

2015 ◽

Cited By ~ 2

Author(s):

Xing Wang ◽

Binghui Zheng ◽

Lusan Liu ◽

Lijing Wang

Keyword(s):

Water Quality ◽

Water Environment ◽

Aquatic Organisms ◽

Dongting Lake ◽

Assessment System ◽

Biotic Integrity ◽

Diatom Index ◽

Integrity Index ◽

Biotic Integrity Index

A Lake Multi-biotic Integrity Index (LMII) for the China’s second largest interior lake (Dongting Lake) was developed to assess the water quality status using algal and macroinvertebrate metrics. Algae and benthic macroinvertebrate assemblages were sampled at 10 sections across 3 subregions of Dongting Lake. We used a stepwise process to evaluate properties of candidate metrics and selected ten for the LMII: Pampean diatom index, diatom quotient, trophic diatom index, relative abundance diatoms, Margalef index of algae, percent sensitive diatoms, % facultative individuals, % Chironomidae individuals, % predators individuals, and total number of macroinvertebrate taxa. We then tested the accuracy and feasibility of the LMII by comparing the correlation with physical-chemical parameters. Evaluation of the LMII showed that it discriminated well between reference and impaired sections and was strongly related to the major chemical and physical stressors (r = 0.766, P<0.001). The re-scored results from the 10 sections showed that the water quality of western Dongting Lake was good, while that of southern Dongting Lake was relatively good and whereas that of eastern Dongting Lake was poor. The discriminatory biocriteria of the LMII are suitable for the assessment of the water quality of Dongting Lake. Additionally, more metrics belonging to habitat, hydrology, physics and chemistry should be considered into the LMII, so as to establish comprehensive assessment system which can reflect the community structure of aquatic organisms, physical and chemical characteristics of water environment, human activities, and so on.

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Assessment of the Impact of Sewage Storage Ponds on the Water Environment in Surrounding Area

Proceedings ◽

10.3390/proceedings2020051020 ◽

2020 ◽

Vol 51 (1) ◽

pp. 20

Author(s):

Kairat Ospanov ◽

Timur Rakhimov ◽

Menlibai Myrzakhmetov ◽

Dariusz Andraka

Keyword(s):

Water Quality ◽

Water Environment ◽

Quality Parameters ◽

Treated Wastewater ◽

Groundwater Aquifer ◽

Sewage Ponds ◽

Basic Quality ◽

The Impact

The paper presents the results of research on the environmental impact of sewage ponds serving the city of Kostanay (Kazakhstan). The scope of the research included the determination of basic quality parameters of raw and treated wastewater, an analysis of the chemical composition of groundwater in the vicinity of sewage ponds, and the analysis of the water quality of the Tobol River. The obtained results indicate that sewage from storage ponds, infiltrating into the ground, caused groundwater pollution in the area of about 100 km2 around the reservoirs. Due to the fact that the groundwater aquifer in the vicinity of sewage ponds feeds the Tobol River, it also affects water quality in the river, which does not meet the requirements for most of the analyzed parameters.

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Analysis on the evolution trend of water resources and water environment in Xiangjiang River basin

MATEC Web of Conferences ◽

10.1051/matecconf/201824602030 ◽

2018 ◽

Vol 246 ◽

pp. 02030

Author(s):

Xingyi Xu ◽

Chuqiu Xiao ◽

Chunyan Hu ◽

Guiyuan Li ◽

Xiang Gao ◽

...

Keyword(s):

Water Quality ◽

Water Resources ◽

River Basin ◽

Water Environment ◽

Sudden Change ◽

Xiangjiang River ◽

Flood Season ◽

Xiangjiang River Basin ◽

Evolution Trend

According to the daily flow data collected by three representative hydrological stations in the Xiangjiang River basin which are the Guiyang station in the upstream section, the Hengshan station in the midstream section, and the Xiangtan station in the downstream section, and the water environment data collected from the Hunan Water Resources Bulletin, Mann-Kendal method was used to analyze the changes of the annual average flow of the Xiangjiang River basin in the past 20 years as well as the variation of water environment quality in the whole year, flood season and non-flood season. Based on these analysis, the evolution trend of water resources and water environment in the Xiangjiang River basin is further forecasted. The results show that the annual runoff of the upper reaches of the Xiangjiang River basin tends to be stable, and the runoff of the middle and lower reaches is decreasing. The water quality of the Xiangjiang River basin got deteriorated from 1996 to 2010. A sudden change occurred around 2012, and the water quality of the basin gradually improved.

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Water-Quality Assessment on Butterfly Lake in Guangdong Ocean University, China

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.367 ◽

2014 ◽

Vol 675-677 ◽

pp. 367-370

Author(s):

Ya Yun Liu ◽

Zi Kun Chen ◽

Ke Jun Ren ◽

Yan Jia ◽

Yue Xian Guo ◽

...

Keyword(s):

Water Quality ◽

Water Environment ◽

Pollution Index ◽

Average Concentration ◽

Light Pollution ◽

Trophic State Index ◽

Monitoring Time ◽

National Quality ◽

Pollution Area

Butterfly Lake provides an important function of ecological environment and campus service for Guangdong Ocean University. Based on the data which were collected in March,May, September and December in 2013, the water environment quality of Butterfly Lake was assessed. The results show that the key pollutant of Butterfly Lake is total phosphorus (TP). The average concentration of TP is worse than the national quality standards for Class V. The water quality appears an obvious difference in different monitoring time. In September the water quality is the best. The average of single parameter pollution index (Sj) is 0.75 and the water quality belongs to good environment area. The average of integrated parameter pollution index (WQI) is 1.76 and the water quality belongs to light pollution area. In December the water quality is the worst. Sj and WQI is 1.14 and 3.14. The water quality belongs to light pollution area and moderate pollution area, respectively. The comprehensive trophic state index is 70.38 in December. The eutrophication level is hyper eutropher. The other monitoring time belongs to middle eutropher. In order to improve the water quality of Butterfly Lake,the valid measure is to strengthen the management of wastewater discharge from the laboratory and the dormitory.

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Water Pollutant Control for a River-Lake Region to the Northwest of Lake Taihu

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.665.420 ◽

2014 ◽

Vol 665 ◽

pp. 420-425

Author(s):

Hua Wang ◽

Feng Qiang Ji ◽

Yi Yi Zhou ◽

Kun Xia

Keyword(s):

Water Quality ◽

Lake Taihu ◽

Water Environment ◽

Reduction Rate ◽

Control Unit ◽

Research Area ◽

River Network ◽

Lake Region ◽

Total Amount Control ◽

Frequent Exchange

In this paper, Zhushan Bay watershed to the northwest of Lake Taihu was selected as the research area. Taking the developed river-lake connectivity and frequent exchange of pollutants into consideration, we put forward a calculation method of water environment carrying capacity (WECC) for river network based on multiple objectives of water quality reaching standard in river environment function zones and control sections, concentration profile constraint of sewage outlet. According to the proposed method, we calculated the watershed WECC, assigned to each control unit, and quantitatively analyzed the reductions and reduction rate of pollutants under the condition of total amount of each pollutant of control unit reach water quality standards. The results showed that: The pollution loads of each pollutant in Zhushan Bay watershed were greater than WECC. The reduction of COD, NH3-N, TN and TP is 834.4 tons, 226.1 tons, 724.8 tons and 108.9 tons, and the reduction rate of COD, NH3-N, TN and TP is 13.8%, 36.5%, 55.2% and 73.4%, respectively. This paper plays a guiding role in the research of total amount control of river network in Zhushan Bay watershed, and provides important references for total amount control of similar river-lake region.

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Effects of Land Cover Changes on Sediment and Nutrient Balance in the Catchment with Cascade-Dammed Waters

Remote Sensing ◽

10.3390/rs12203414 ◽

2020 ◽

Vol 12 (20) ◽

pp. 3414

Author(s):

Dawid Szatten ◽

Michał Habel

Keyword(s):

Water Quality ◽

Land Cover ◽

Catchment Area ◽

Nutrient Balance ◽

Water Environment ◽

Hydrological Regime ◽

Trapping Efficiency ◽

Land Cover Changes ◽

Matter Transport

It is commonly believed that changes in the use of the catchment area have a direct impact on the quality of the water environment. Rivers with dams and reservoirs are characterized by a disturbed outflow of sediments and nutrients from the catchment area. The research was based on indicating the variation in time and space of loads of selected parameters of the water quality of the Brda River (Northern Poland) against the land cover changes based on the CORINE Land Cover (CLC) data for the 1990–2018 period. In the lower part of the Brda catchment area, there are three hydropower dams with reservoirs in the form of a cascade, whose work clearly affects the hydrological regime of the river. The analysis of the dependence of the dynamics of water quality changes on the usage of CLC was based on indicators such as sediments (suspended sediment load) and nutrients (total phosphorus load and total nitrogen load). The use of hydrological data on the Brda discharge above and below the reservoirs made it possible to calculate sediment and nutrient trapping efficiency. Linking the CLC data with the indices responsible for the mechanical denudation of the catchment area made it possible to show the strength of changes taking place in the catchment area. The results of the research do not indicate any direct correlation between land cover changes and the dynamics of the denudation process and matter transport in the Brda catchment area. As our research shows, the strong influence on the hydrological regime of the catchment points out the necessity to search for still other research methods supporting the decision-making cycle in the field of water management in the face of climate change.

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KUALITAS LINGKUNGAN PERAIRAN DAN KONDISI OSEANOGRAFI DI KAWASAN INDUSTRI SEKUPANG KOTA BATAM = Water Environment Quality and Oceanographic Conditions in the Industrial Area Sekupang, Batam

Jurnal Teknologi Lingkungan ◽

10.29122/jtl.v14i1.1435 ◽

2016 ◽

Vol 14 (1) ◽

pp. 35

Author(s):

Agung Riyadi ◽

Matih Santos

Keyword(s):

Water Quality ◽

High Tide ◽

Water Environment ◽

Industrial Area ◽

Poor Quality ◽

Primary Data ◽

Quality Model ◽

Environment Quality ◽

A Value

This study is located in industrial area in Sekupang, Batam. Primary data collection includes water quality, aquatic biota, and the tidal current direction and speed measurement. Overall water quality conditions in the surrounding industrial area Sekupang is still good, it can be seen from the results of laboratory analysis is still below the quality standards specified . Flow pattern at high tide is moving south at a speed of 1 m / sec, while at low tide movement heading north flows with varying speeds ranging from 0.1 m / sec to 1 m / sec. Tidal patterns according to formulation Formzahl 0.48, which means there is a double mix of ups and downs in a day where there will be two times of ups and downs twice but different amplitudes, and riding pasutnya up to 2.93 m. Phytoplankton in the study area found 25 species such as Skeletonema sp., Chaetoceros sp, sp Lauderia which dominate the waters. There is also a kind of Dynophyceae with species such as Peridinium sp, whereas Cyanophyceae types are Trichodesmium sp. Results of analysis diversitasnya index of 1.54, which identifies those waters have poor quality. Evenness index/species uniformity of 0.43 indicates the quality of its waters being. While the dominance index was the quality of the water has a value of 0.41. Mike21 hydrodynamic modeling is used in assisting the analysis of the direction and speed of global flows in accordance with the pattern of tidal and bathymetric depth.Keyword: patterns of currents, tides, environmental quality, model Abstrak Penelitian ini berlokasi di kawasan industri Sekupang Kota Batam. Pengambilan data primer meliputi kualitas air, biota perairan, pasang surut dan pengukuran arah dan kecepatan arus. Secara keseluruhan kondisi kualitas perairan di sekitar kawasan industri Sekupang masih baik, hal ini dapat dilihat dari hasil analisa laboratorium masih di bawah baku mutu yang ditetapkan. Pola arus pada saat pasang bergerak ke arah selatan dengan kecepatan 1 m/detik, sedangkan pada saat surut pergerakan arus mengarah ke utara dengan kecepatan bervariasi berkisar 0,1 m/detik hingga 1m/detik. Pola pasang surut menurut formulasi Formzahl 0,48 yang artinya terdapat pasang surut campuran ganda dimana dalam satu hari akan terjadi dua kali pasang dan dua kali surut akan tetapi amplitudo berbeda-beda, dan tunggang pasutnya hingga 2,93 m. Fitoplankton di wilayah penelitian dijumpai 25 spesies seperti Skeletonema sp., Chaetoceros sp, Lauderia sp yang mendominasi perairan. Juga terdapat jenis Dynophyceae dengan spesies seperti Peridinium sp, sedangkan jenis Cyanophyceae terdapat Trichodesmium sp. Hasil analisa indeks diversitasnya 1,54 yang mengidentifikasikan perairan tersebut mempunyai kualitas buruk. Indeks kemerataan/keseragaman spesies 0,43 yang mengindikasikan kualitas perairannya sedang. Sedangkan indeks dominansi perairan mempunyai kualitas sedang dengan nilai 0,41. Pembuatan model hidrodinamika menggunaan Mike21 di dalam membantu analisis arah dan kecepatan arus secara global sesuai dengan pola pasang surut dan kedalaman batimetri. Kata kunci: pola arus, pasang surut, kualitas lingkungan, model

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Sustainable management of water environment in anthropopressure area for municipal purposes, water quality improvement and utilization of renewable energy sources

10.5194/egusphere-egu21-12927 ◽

2021 ◽

Author(s):

Artur Wilczynski ◽

Barbara Namyslowska-Wilczynska ◽

Pawel Maslankiewicz

Keyword(s):

Water Quality ◽

Sustainable Development ◽

Sustainable Management ◽

Renewable Energy Sources ◽

Local Population ◽

Water Environment ◽

Energy Sources ◽

Industrial Areas ◽

Post Industrial

The Authors deal with the problems of management of post-industrial areas affected by high unemployment leading to prevailing frustration, increasing migration of the population and other socially and economically adverse phenomena. This is accompanied by the considerable degradation of the natural environment and the deterioration in the quality of life of the local population. The aim of the studies is showing the possibilities to create a model to manage the resources in order to achieve sustainable development, particularly to manage water and energy in the post-industrial areas. The studies have been carried out for a region heavily industrialized in the recent past with present closed down mines. In particular, the work relates to examine the possibility of: improving the quality of the surface and underground waters, using the water as a source of low-temperature heat, storing energy and producing energy in local renewable sources, ensuring proper water retention, developing post-industrial tourism through managing the post-industrial facilities and making them available. Innovation of work is to create an integrated model of resources and the environment management, in particular water resources and non-conventional energy.The proposals constitute a contribution to the implementation of the principles of sustainable development by focusing on three of its dimensions - economic, environmental and social. At the same time it would be a way for the sustainable management of the water environment in the areas of anthropopressure, in industrial and post-industrial areas, for the purpose of collecting water, improving water quality and the use of local energy sources. The possibility of energy storage, which is extremely important in the area of an intensive development of unconventional sources of energy (wind farms, solar sources, hydroelectric, etc.), the characteristics of which are irregular, referred to simply as chimeric sources, also exists.

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Water security for subjective wellbeing: new perspectives for sustainable development

10.5194/egusphere-egu2020-12180 ◽

2020 ◽

Author(s):

Giulia Roder ◽

Saroj Kumar Chapagain ◽

Paul Hudson ◽

Geetha Mohan ◽

Kensuke Fukushi

Keyword(s):

Water Quality ◽

Sustainable Development ◽

Subjective Wellbeing ◽

Management Strategies ◽

Water Environment ◽

Water Security ◽

Natural Environments ◽

Political Commitment ◽

The Future

The notion of sustainable development in the current policy environment is inescapable from the concept of human wellbeing, as linked to the civic, political, economic, and natural environments people live in. However, the latter has been quite often overlooked in the scientific discussion, whereas nature&#8217;s ability to support and expand human capabilities and activities is essential for sustainable development. In this context, water is a crucial resource and has an immeasurable value in both economic and non-economic roles, with a deep spiritual significance in many cultures as well. However, access to clean water to meet basic needs is precluded in many countries in the world. This inaccessibility puts entire communities in jeopardy, thus impacting their happiness and sustainable living and development. A large proportion of the Nepalese society is bereft of access to adequate and safe drinking water, challenging the availability of this scares resource and its management in the future.For this reason, we are undertaking 650 face-to-face interviews to understand peoples&#8217; subjective wellbeing related to water in Pokhara metropolitans city, the second-largest city of Nepal. Preliminary results from the pre-test (n=50) demonstrated a modest sense of place and happiness overall but was impacted by the perceived unsatisfactory water quality. People strongly expressed a desire for new political commitment towards the creation of new regulatory approaches concerning water quality standards and management strategies. The pre-test respondents validated their support for increasing the quality of the water environment in the local water supply system by offering to pay an extra surcharge (in taxes or water bills), which is up to the double of their current expenses. These partial results suggest that the good quality of water is essential for the future urban planning in the form of increase people health and secure a sustainable development for future generations to come.

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