scholarly journals A Questionnaire Survey on Contaminated Site Regulators’ View of Implementing Green and Sustainable Remediation in China

2021 ◽  
Vol 13 (21) ◽  
pp. 11755
Author(s):  
Xueting Shao ◽  
Feiyu Wang ◽  
R. Paul Bardos ◽  
Yimin Sang ◽  
Yong Ren ◽  
...  
Keyword(s):  
Practical Experience ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Regulatory Requirements ◽  
Municipal Policy ◽  
Policy System ◽  
Sustainable Remediation ◽  
Significant Barrier ◽  
Green And Sustainable Remediation ◽  
Different Levels

Government contaminated site regulators, as policy executors and makers, have a profound impact on the development of green and sustainable remediation (GSR), but their cognitive level of GSR has not been well-studied. China has some experience in the management of contaminated sites and has the foundation to promote GSR. This study was conducted in the form of a questionnaire to investigate the understanding of GSR among Chinese site regulators at different levels. The study found that there was still a lot of resistance to promoting GSR in China. Firstly, even though the regulators thought GSR was necessary in China, most of them did not know GSR very well or lacked practical experience. Secondly, existing national and provincial policy standards did not have a good balance between the environmental, social and economic aspects, but gave priority to the environmental factors. Thirdly, the lack of standard and regulatory requirements was the most significant barrier to the implementation of GSR. The results of the survey can provide a reference for China or other developing countries to implement GSR. Practitioners should provide more knowledge and cases for regulators, supplement national policies or improve the provincial and municipal policy system.

The potential of anaerobic bacteria to degrade chlorinated compounds

2001 ◽  
Vol 44 (8) ◽  
pp. 49-56 ◽  
Author(s):  
M.H.A. van Eekert ◽  
G. Schraa
Keyword(s):  
Anaerobic Bacteria ◽  
Granular Sludge ◽  
Chlorinated Ethenes ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Anaerobic Conditions ◽  
Chlorinated Aromatics ◽  
Start Up ◽  
Acetogenic Bacteria ◽  
Uasb Reactors

Chlorinated ethenes and chlorinated aromatics are often found as pollutants in sediments, groundwater, and wastewater. These compounds were long considered to be recalcitrant under anaerobic conditions. In the past years however, dechlorination of these compounds has been found to occur under anaerobic conditions at contaminated sites and in wastewater treatment systems. This dechlorination is mainly attributed to halo-respiring bacteria, which are able to couple this dechlorination to energy conservation via electron transport coupled phosphorylation. The dechlorinating activities of the halo-respiring bacteria seem to be confined to the dechlorination of chloroethenes and chlorinated aromatic compounds. In addition, methanogenic and acetogenic bacteria are also able to reduce the chlorinated ethenes via a-specific cometabolic pathways. Although these latter reactions may not be important in the remediation of contaminated sites, they may be of substantial influence in the start-up of remediation processes and in the application of granular sludge from UASB reactors. Specific halo-respiring bacteria may be used to increase the dechlorination activities via bioaugmentation in the case that the appropriate microorganisms are not present at the contaminated site or in the sludge.

Metal and petroleum hydrocarbon contamination at Wilkes Station, East Antarctica

2014 ◽  
Vol 27 (2) ◽  
pp. 118-133 ◽  
Author(s):  
Kirstie A. Fryirs ◽  
Erla G. Hafsteinsdóttir ◽  
Scott C. Stark ◽  
Damian B. Gore
Keyword(s):  
Water Contamination ◽  
Waste Treatment ◽  
Hydrocarbon Contamination ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Background Concentration ◽  
Site Assessment ◽  
Quality Guidelines ◽  
Petroleum Hydrocarbon Contamination ◽  
Concentration Levels

AbstractThe management of sediment and water contamination from legacy waste is a significant problem in Antarctica. Although several reports have noted that there are contaminated sites at the abandoned Wilkes Station, a systematic attempt to assess the spatial scale of the problem has not been made, making development of clean-up or preservation programmes difficult. A contaminated site assessment for the old Wilkes Station and surrounds is presented in this paper. The Australian and New Zealand Environment and Conservation Council (ANZECC) sediment and water quality guidelines and background concentration levels (BCL) were used to assess the extent of contamination across Clark Peninsula. Of 67 sediment sites sampled, 72% were contaminated with at least one metal or metalloid, with values exceeding the ANZECC ISQG-High or 2 x BCL. Moreover, 19% were contaminated with four or more metals/metalloids. Of the 93 water samples collected, all but one was contaminated with at least one metal/metalloid concentration exceeding the guidelines, and 96% were contaminated with two or more metals/metalloids. For hydrocarbons in sediment and water, most samples were below quantitation limits. There is a complex pattern of contamination across Clark Peninsula that needs to be considered in future waste treatment, containment or removal operations, and for protection of heritage items.

Application of an Environmental Remediation Methodology: Theory vs. Practice—Reflections and Two Belgian Case Studies

2011 ◽  
Author(s):  
W. Blommaert ◽  
K. Mannaerts ◽  
S. Pepin ◽  
B. Dehandschutter
Keyword(s):  
Case Studies ◽  
Environmental Remediation ◽  
Waste Treatment ◽  
Stakeholder Involvement ◽  
Sampling Strategy ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Chemical Contamination ◽  
First Case ◽  
The Impact

Like in many countries, polluted industrial sites also exist in Belgium. Although the contamination is purely chemical in most cases, they may also contain a radioactive component. For chemically contaminated sites, extensive regulations and methodologies were already developed and applied by the different regional authorities. However and essentially because radioactivity is a federal competence, there was also a necessity for developing a legal federal framework (including an ER-methodology [1]) for remediation of radioactive contaminated sites. Most of the so-called radioactive contaminated sites are exhibiting a mixed contamination (chemical and radiological), and hence the development of such methodology had to be in line with the existing (regional) ones concerning chemical contamination. Each authority having their own responsibilities with regard to the type of contamination, this makes it more complicated and time-consuming finding the best solution satisfying all involved parties. To overcome these difficulties the legal framework and methodology — including the necessary involvement of the stakeholders and delineation of each party’s responsibilities — has to be transparent, clear and unambiguous. Once the methodology is developed as such and approved, the application of it is expected to be more or less easy, logic and straightforward. But is this really true? The aim of this document is to investigate as well the impact of factors such as the type of radioactive contamination — levels of contamination, related to NORM activity or not, homogeneous or heterogeneous, the differences in licensing procedures,… — on the application of the developed methodology and what could be the consequences in the long run on the remediation process. Two existing case studies in Belgium will be presented ([2]). The first case deals with a historical radium contaminated site, the second one with a phosphate processing facility still in operation, both with (very) low levels of radioactivity but containing very large volumes of contaminated materials. These case studies will demonstrate that, although the applied methodology will be the same in both cases, the impact of e.g. sampling strategy, scenario definitions, modelisations, final destination of the land, presence of chemotoxic components, dose or risk assessments, uncertainties, derivation of clean-up radionuclide guidelines, stakeholder involvement and waste treatment could be important on licensing, cost-estimate, planning and final outcome of the environmental remediation activities to be executed.

Relevance of sustainable remediation to contaminated sites manage in developed and developing countries: Case of Brazil

2020 ◽  
Vol 94 ◽  
pp. 104533 ◽  
Author(s):  
Adeli Beatriz Braun ◽  
Adan William da Silva Trentin ◽  
Caroline Visentin ◽  
Antônio Thomé
Keyword(s):  
Developing Countries ◽  
Contaminated Sites ◽  
Sustainable Remediation

Study on Degradation of Nitrobenzene in Groundwater by Fenton-Like Oxidation Based on Iron in Aquifer Materials

2011 ◽  
Vol 183-185 ◽  
pp. 516-521 ◽  
Author(s):  
Meng Sun ◽  
Yong Sheng Zhao ◽  
Jun Dong ◽  
Li Li Dong
Keyword(s):  
Hydroxyl Radical ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Generation Process ◽  
High Efficient ◽  
Good Potential ◽  
Three Stages ◽  
Radical Generation ◽  
Extraction Agent

Fenton and Fenton-like reactions are regarded as high efficient methods in advanced treatment of nitrobenzene wastewater but both restrained in degradation of nitrobenzene in groundwater because of the low pH condition( less than 4 ) requirement and other problems such as secondary pollution by the irons in contaminated sites. This paper reports a new Fenton-like technology combined irons extraction from aquifer materials which were found in a nitrobenzene contaminated site in China with hydrogen peroxide catalytic oxidation. The simulate experiments were conducted to investigate the oxidation of nitrobenzene in groundwater by this method under the condition of neutral pH and 8~10°C. The comparison of different extraction agent and production rule of hydroxyl radical were both studied in this research. The results indicated that extraction had hysteresis property because the highest extracting efficiency occurred after 36h. Extraction agent DCB has the highest efficiency, for Fe3+ was 62.92% and Fe2+ was 30.17%. The highest removal efficiency could reach 80.2% while the mole ratio of nitrobenzene to H2O2 was 1:200. Three stages could found in hydroxyl radical generation process, in the first stage hydroxyl radical generated rapidly in 0~30min, then decreased slowly between 30min and 120min, at last the generation tended to be steady after 120h. The results could possess a good potential for application in the treatment of nitrobenzene contaminated groundwater and provide theoretical basis on in-situ chemical remediation technology of nitrobenzene contaminated sites.

Research on Whole Life Cycle Management Policy for Green Buildings in Tianjin Eco-City

2011 ◽  
Vol 255-260 ◽  
pp. 3903-3906
Author(s):  
Jia Xi Hu ◽  
De Qing Bu
Keyword(s):  
Life Cycle ◽  
Life Cycle Management ◽  
Practical Experience ◽  
Green Buildings ◽  
Management Policy ◽  
Policy System ◽  
Post Evaluation ◽  
The Government ◽  
Construction Operation ◽  
Whole Life Cycle

Based on whole life cycle of green buildings, the project aims to build a management policy system for green buildings in the eco-city including planning, design, construction, operation, post-evaluation and general management, to promote this system in Tianjin Eco-city guided by “the principle of practicable, replicable and expandable”, and to provide related suggestions for the government to develop life cycle management policies for green buildings with the practical experience of the eco-city project.

Health Risk Assessment and Quantitative Calculation of Typical Cr Contaminated Sites

2011 ◽  
Vol 414 ◽  
pp. 45-50 ◽  
Author(s):  
Xiao Song Sun ◽  
Hang Zhou ◽  
Xiao Nan Sun ◽  
An Ping Liu ◽  
Jian Ming Sun
Keyword(s):  
Risk Assessment ◽  
Health Risk ◽  
Health Risk Assessment ◽  
Contaminated Soil ◽  
Contaminated Soils ◽  
Contaminated Sites ◽  
Contaminated Site ◽  
Detailed Data ◽  
Quantitative Calculation ◽  
Chemical Factory

Select the former site of a chemical factory in Chongqing, China as the typical Cr contaminated site. According to “Technical guidelines for risk assessment of contaminated sites” and “Standard of Soil Quality Assessment for Exhibition Sites (Interim)” (HJ-350-2007), this paper conducts health risk assessment for the site, and provide a basis for contaminated soil remediation. At the same time, according to the contaminated condition, used the Golden Software Surfer 8 to draw the boundary of contaminated soils and thus calculate the volume of contaminated soil. By estimation the volume is about 3122.3 m3, which provide detailed data for the later remediation engineering.

scholarly journals Multi-aspect potential of project activities in the university (based on the innovative platform project material)

2021 ◽  
Vol 121 ◽  
pp. 02012
Author(s):  
Olga Nikolaevna Chelyukanova ◽  
Natalia Evgenievna Titkova
Keyword(s):  
Children's Literature ◽  
Children’S Literature ◽  
Practical Experience ◽  
Educational Institutions ◽  
Children's Book ◽  
Parents And Children ◽  
Wide Range ◽  
Teachers And Parents ◽  
The University ◽  
Different Levels

The article discusses the methodology of work on the project of the “Revival of traditions of family reading in the modern spiritual education of children and youth” innovative platform, organized in the Arzamas branch of the SUNN. The project is a cumulative phenomenon that synthesizes the scientific and methodological experience of leading teachers, psychologists, and organizers of children’s reading, research scientists of children’s literature. The project involves scientists, teachers of educational institutions of different levels, students, children of different ages, and their parents in a wide joint creative activity. Particular attention in the development of this practice-oriented innovative project is paid to the activities of the student initiative group and its pedagogical effect. The educational strategy of the project contributes to the development of constructive critical thinking and is aimed at developing a wide range of professional competencies among students participating in the project: professional and pedagogical, communicative, general cultural, and informational. The article pays particular attention to the description of the complex of educational products and forms of methodological assistance to teachers and parents. In the process of implementing this project, the urgent needs of teachers and families participating in the project are met. Those include the acquisition of methodological experience in working with parents and children to popularize children’s literature and family reading; practical experience of working with a children’s book in a family circle; the acquisition of artistic reading and recitation skills by the project participants; the generalization and systematization of scientific and methodological experience in the field of children’s literature and family reading; family and creative literary communication; the introduction to the literary study of local lore. Literary and ethical-artistic questions are brought to spectators through theatrical communication.

scholarly journals Sustainable Remediation of Contaminated Soil Using Biosurfactants

2021 ◽  
Vol 9 ◽  
Author(s):  
Catherine N. Mulligan
Keyword(s):  
Time Constraints ◽  
Future Research ◽  
Research Needs ◽  
Regulatory Requirements ◽  
Recovery Processes ◽  
Sustainable Remediation ◽  
Low Toxicity ◽  
Remediation Process ◽  
Selection Of

Selection of the most appropriate remediation technology must coincide with the environmental characteristics of the site. The risk to human health and the environment at the site must be reduced, and not be transferred to another site. Biosurfactants have the potential as remediation agents due to their biodegradability, low toxicity, and effectiveness. Selection of biosurfactants should be based on pollutant characteristics and properties, treatment capacity, costs, regulatory requirements, and time constraints. Moreover, understanding of the mechanisms of interaction between biosurfactants and contaminants can assist in selection of the appropriate biosurfactants for sustainable remediation. Enhanced sustainability of the remediation process by biosurfactants can be achieved through the use of renewable or waste substrates, in situ production of biosurfactants, and greener production and recovery processes for biosurfactants. Future research needs are identified.

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