scholarly journals Microplastics pollution in China water ecosystems: a review of the abundance, characteristics, fate, risk and removal

2020 ◽  
Vol 82 (8) ◽  
pp. 1495-1508
Author(s):  
Shuyuan Tang ◽  
Ling Gao ◽  
Hongze Gao ◽  
Zongshi Chen ◽  
Donglei Zou
Keyword(s):  
Economic Development ◽  
Large Population ◽  
Sewage Treatment ◽  
Current Treatment ◽  
Research Trends ◽  
Future Research ◽  
Treatment Technology ◽  
Sewage Treatment Plants ◽  
Research Results ◽  
Water Ecosystems

Abstract Microplastics pollution has been a focus for researchers in recent years worldwide, for the large quantities of plastics in production and the resistance to degradation. China's microplastics pollution attracts much attention because of its long coastline, large population and rapid economic development. This review addresses the widespread microplastics pollution in China's water ecosystems through available research results from recent years and analyses the abundance, characteristics, fate and risk of microplastics. This paper also discusses the current treatment technology of microplastics. The conclusions show that estuaries are severely affected by microplastics pollution; the accumulation of microplastics and adsorption of contaminants by microplastics could also lead to serious risks besides ingestion; there are few technologies that can efficiently remove microplastics pollution in sewage treatment plants. Finally, this review suggests directions for future research trends.

Research on Sewage Treatment Technology of High Salt City in Tangshan Coastal Development Zone

2012 ◽  
Vol 599 ◽  
pp. 543-546
Author(s):  
Yang Yong ◽  
Xiao Liu ◽  
Yao Zong Zhang
Keyword(s):  
Economic Development ◽  
Sewage Treatment ◽  
Coastal Areas ◽  
Coastal Development ◽  
Biochemical Treatment ◽  
Treatment Technology ◽  
Development Zone ◽  
Technical Parameters ◽  
Urban Sewage ◽  
Technical Programs

With the economic development of the coastal development zone, the coastal industrial and economic development is rapid and the other residents' living consumption is lagging behind, resulting in a new coastal development zone COD / BOD low, coupled with the regional characteristics of the coastal areas, making the coastal areas of urban sewagetreatment plant of the difficult problems of biochemical treatment. This study focused on the reasons for the difficulties of urban sewage in coastal areas of biochemical treatment solution to the problem, and provide relevant technical programs and technical parameters for the construction of a new coastal development zone in the city sewage treatment.

Minimising Nuisances by Covering Compact Sewage Treatment Plants

1992 ◽  
Vol 25 (4-5) ◽  
pp. 363-374 ◽  
Author(s):  
F. Rogalla ◽  
G. Roudon ◽  
J. Sibony ◽  
F. Blondeau
Keyword(s):  
Large Scale ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Mediterranean Coast ◽  
High Rate ◽  
Parallel Plates ◽  
Multiple Use ◽  
Treatment Technology ◽  
Sewage Treatment Plants

Stringent effluent quality programs to limit wastewater discharges into receiving waters require extensive upgrading of conventional wastewater treatment plants. Large facilities built some decades ago are now often located in densely urbanised areas where land is unavailable. Since nitrogen and phophorus removal often require additional unit processes, innovative solutions have to be found to upgrade existing plants for nutrient removal. This paper shows large scale examples of compact technology and the additional upgrading flexibility provided. New facilities are implemented in sensitive neighborhoods by creative siting under sports stadiums, parks or buildings. In covered plants, air emission control becomes of primary importance. To reduce visual impacts and facilitate odour control, more and more underground treatment plants are constructed, allowing multiple use of plant surfaces. Several plants are illustrated in inner-city locations, avoiding infrastructure cost to pump sewage to remote sites. Most of the presented plants incorporate spacesaving settling facilities and high rate biological reactors to reduce the ‘footprints' of the installations and thus favour coverage. Parallel plates in primary setllers reduce the surface to about one tenth of conventional systems. Biocarbone aerated filters combine biodegradation with very high removal rates and retention of particles in one reactor, without additional clarification or filtration. Air treatment for large plant is mostly performed by chemical scrubbing, completely eliminating environmental nuisances. Performance results of both air and water treatment technology are given. Examples include recent sewage treatment plants on the French Mediterranean Coast. A physico-chemical treatment plant for 1 Million p.e. has operated since 1987 under a stadium in Marseille. In Monaco, the sewage treatment plant for 100 000 p.e.is located in the city center underneath a building of 3000 m2. Primary lamella settlers are followed by biological treatment on Biocarbone aerated filters and air is chemically deodourised. Similar technology is used in Antibes' 200 000 p.e. plant, integrated underneath a park close to the beach.

scholarly journals Cod Fractions - Methods of Measurement and Use in Wastewater Treatment Technology

2017 ◽  
Vol 24 (1) ◽  
pp. 195-206 ◽  
Author(s):  
Sylwia Myszograj ◽  
Ewelina Płuciennik-Koropczuk ◽  
Anita Jakubaszek
Keyword(s):  
Soluble Fraction ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treatment Technology ◽  
Sewage Treatment Plants ◽  
Real Concentration ◽  
Industrial Sewage ◽  
Methods Of Measurement ◽  
Raw Wastewater

Abstract The paper presents the results of studies concerning the designation of COD fraction in raw wastewater. The research was conducted in four municipal mechanical-biological sewage treatment plants and one industrial sewage treatment plant. The following fractions of COD were determined: non-biodegradable (inert) soluble SI, biodegradable soluble fraction SS, particulate slowly degradable XS and particulate non-biodegradable XI. The methodology for determining the COD fraction was based on the ATV-A131 guidelines and Łomotowski-Szpindor methodology. The real concentration of fractions in raw wastewater and the percentage of each fraction in total COD are different from data reported in the literature.

Emission of primary microplastics in mainland China: Invisible but not Negligible

2020 ◽  
Author(s):  
Teng Wang ◽  
Baojie Li ◽  
Xinqing Zou
Keyword(s):  
Economic Development ◽  
Aquatic Environment ◽  
Emission Inventory ◽  
Public Awareness ◽  
Sewage Treatment ◽  
Mainland China ◽  
Synthetic Fiber ◽  
Public Attention ◽  
Sewage Treatment Plants ◽  
Ocean Science

<p><strong>Emission of primary microplastics in mainland China: Invisible but not Negligible</strong></p><p> </p><p>Teng Wang <sup>1,3</sup>, Baojie Li <sup>2,3*</sup> , Xinqing Zou<sup>3*</sup></p><p><sup>1</sup> College of Oceanography, Hohai University, Nanjing, 210098</p><p><sup>2</sup> School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, 210044</p><p><sup>3 </sup>School of Geography and Ocean Science, Nanjing University, Nanjing, 210023</p><p>  </p><p><strong>Abstract: </strong></p><p>Primary microplastics are mostly produced as part of the daily plastic product use. The emission process is often invisible but poses potential ecological hazards. Thus, primary microplastics deserve public attention. Due to China's huge population base and its rapid economic development, primary microplastics emissions are of both regional and global significance. This study is the first to establish the emission inventory of primary microplastics in mainland China. It was estimated that the primary microplastic waste from mainland China amounts to 737.29 Gg, and one-sixth of this amount entered the aquatic environment in 2015. The highest proportion of this waste was attributable to tire dust and synthetic fiber, accounting for 53.91% and 28.77% of the total respectively, in mainland China. The primary microplastics emissions mainly depend on the population, followed by the level of economic development. It was roughly estimated that 538 g of microplastics is produced by each person in China. At the grid scale, the spatial difference in the total primary microplastics emissions in mainland China primarily depends on the population density distribution and transportation network. We studied the entire life cycle of several sources of microplastics, from production to discharge into the aquatic environment. We suggested different control measures under different nodes. Increasing microplastics treatment in sewage treatment plants should be a short-term viable way to achieve some measure of reduction in their entry to the environment in mainland China. Our research can not only raise public awareness about primary microplastics, but can also guide the development of environmental policies to reduce plastic pollution.</p><p><strong> </strong></p><p><strong>Keywords:</strong> Primary microplastics; Emission inventory; Mainland China; Sewage treatment plants</p>

scholarly journals Carbon emission assessment of wastewater treatment plant based on accounting perspective

2020 ◽  
Vol 194 ◽  
pp. 04049
Author(s):  
Lin Lin
Keyword(s):  
Sewage Treatment ◽  
Ghg Emissions ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treatment Technology ◽  
Sewage Treatment Plants ◽  
Ecological Treatment ◽  
Operation Control ◽  
Reduce Emissions

Excessive GHG emissions from human activities lead to climate warming, and sewage treatment plants are one of the sources of GHG emissions. The number of sewage treatment plants in my country is increasing year by year, and they emit a large amount of GHG, it is necessary to evaluate their emissions and seek ways to reduce emissions. According to the “Greenhouse Gas Inventory Protocol-Corporate Accounting and Reporting Standards”, taking a sewage treatment plant in a northern city as an example, the GHG emission classification of its operation control range, selection of evaluation methods and emission factors, assessment of GHG emissions, analysis of GHG emissions Constitution, propose ecological treatment technology, recycling CH4 and other emission reduction measures.

Projecting a European Diploma in Psychology

2002 ◽  
Vol 7 (3) ◽  
pp. 221-224 ◽  
Author(s):  
Bernhard Wilpert
Keyword(s):  
Research Process ◽  
Project Team ◽  
Future Research ◽  
Research Results ◽  
External Constraints ◽  
Internal Procedures ◽  
The Eu

The paper presents an inside evaluation of the EuroPsyT project, funded by the EU Leonardo Program in 1999-2001. While standard research usually neglects to reflect on the internal and external constraints and opportunities under which research results are achieved, the paper stresses exactly those aspects: starting from a brief description of the overall objectives of the 11 countries project, the paper proceeds to describe the macro-context and the internal strengths and weaknesses of the project team, the internal procedures of cooperation,. and obstacles encountered during the research process. It winds up in noting some of the project's achievements and with a look towards future research.

Tomorrow's Promise: Future Research Trends in Aging

PsycCRITIQUES ◽  
2007 ◽  
Vol 52 (15) ◽  
Author(s):  
Michelle M. Braun
Keyword(s):  
Research Trends ◽  
Future Research

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

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