The Concentration and the Abatement Strategy of Organic Contaminants in Sewage Sludge Dewatering

2011 ◽  
Vol 356-360 ◽  
pp. 1495-1499
Author(s):  
Jie Yu ◽  
Guo Di Zheng ◽  
Tong Bin Chen
Keyword(s):  
Sewage Sludge ◽  
Organic Contaminants ◽  
Environmental Risks ◽  
Future Research ◽  
Sludge Dewatering ◽  
Sludge Disposal ◽  
Secondary Pollution ◽  
Pollution Problem ◽  
Safety And Environment ◽  
Abatement Strategy

Sludge agriculture application in future will be one of the main sewage sludge disposal ways in China. To ensure safety and environment of sewage sludge agriculture application, except to strengthen the research of sludge heavy metal, pathogen outside the organic contaminants will be one of the focuses of the future research, especially to strengthen the PAHs and NP/NPE. In order to reduce the environmental risks of sludge agriculture application, using biological aerobic fermentation processing technology treatment sludge can effectively reduce the organic contaminants, depress secondary pollution problem, which sewage sludge brings.

Degradation of organic contaminants with biological aerobic fermentation in sewage sludge dewatering and its influencing factors

2012 ◽  
Vol 32 (7) ◽  
pp. 2271-2278
Author(s):  
余杰 YU Jie ◽  
郑国砥 ZHENG Guodi ◽  
高定 GAO Ding ◽  
刘洪涛 LIU Hongtao ◽  
陈同斌 CHEN Tongbin
Keyword(s):  
Sewage Sludge ◽  
Influencing Factors ◽  
Organic Contaminants ◽  
Aerobic Fermentation ◽  
Sludge Dewatering

Have Risks Associated with the Presence of Synthetic Organic Contaminants in Land-Applied Sewage Sludges Been Adequately Assessed?

2003 ◽  
Vol 12 (4) ◽  
pp. 371-386 ◽  
Author(s):  
Robert C. Hale ◽  
Mark J. La Guardia
Keyword(s):  
United States ◽  
Risk Assessment ◽  
Sewage Sludge ◽  
Polybrominated Diphenyl Ethers ◽  
Organic Contaminants ◽  
The United States ◽  
Land Application ◽  
Sludge Disposal ◽  
Diphenyl Ethers ◽  
High Concentrations

Land application has become the dominant means for sewage sludge disposal in the United States. In 1993, the EPA concluded that synthetic organics therein posed an insignificant risk, based on the results of the 1988 National Sewage Sludge Survey, the view that most persistent organics are no longer in commerce and that industrial pretreatment further reduces their release to municipal treatment plants. However, we detected high concentrations of several problematic compounds in biosolids that were overlooked in the risk assessment, including persistent, bioaccumulative polybrominated diphenyl ethers and estrogenic nonylphenols. These results and other findings call into question the assessment's certainty.

Small Scale Pilot Plant Thermal Dryer for Sewage Sludge Dewatering System – A Preliminary Study

2014 ◽  
Vol 695 ◽  
pp. 336-339
Author(s):  
Mohd Safuan Zakaria ◽  
Suhaimi Hassan ◽  
M. Faizairi
Keyword(s):  
Sewage Sludge ◽  
Moisture Content ◽  
Solid Fuel ◽  
Continuous Production ◽  
Small Scale ◽  
Sludge Dewatering ◽  
System A ◽  
Sludge Disposal ◽  
The Common ◽  
Treatment And Disposal

Malaysia expected to face serious problem in sewage sludge disposal in the next few years if this problem is not properly manage and well treated. The common way of sludge disposal in Malaysia is to dispose it on the land, by landfill disposal. However, most of the landfill has been closed since reaching it capacity. This product required innovation and advance solution for treatment and disposal since the production of sewage sludge rapidly increasing and the available solution for their disposal is out dated .One of the ideal solution to dispose the sludge is by converting it into useful energy in the form of solid fuel such as pallet and briquette and burn it as a solid fuel to generate power. However, the main problem faced is it contains high moisture content which is more than 90% of moisture content. In order to convert it into useful energy, the moisture content of the sludge need to be reduced into acceptable level which is below 20% . One of the effective methods to remove the moisture content is by using a thermal dryer. The preliminary results from this study found that the thermal dryer produced 63.32kg/h of dried sewage sludge with moisture content less than 20% . The production rate of this dryer shows positive result and with continuous production, this dryer cable to dry tons of wet sewage sludge.

Sewage sludge as organic matrix in the manufacture of organomineral fertilizers: Physical forms, environmental risks, and nutrients recycling

2021 ◽  
pp. 127774
Author(s):  
Mayra Maniero Rodrigues ◽  
Douglas Gomes Viana ◽  
Fernando Carvalho Oliveira ◽  
Marcelo Corrêa Alves ◽  
Jussara Borges Regitano
Keyword(s):  
Sewage Sludge ◽  
Organic Matrix ◽  
Environmental Risks

Effect of adding alum sludge from water treatment plant on sewage sludge dewatering

2016 ◽  
Vol 4 (1) ◽  
pp. 746-752 ◽  
Author(s):  
Jun Li ◽  
Liu Liu ◽  
Jun Liu ◽  
Ting Ma ◽  
Ailan Yan ◽  
...  
Keyword(s):  
Water Treatment ◽  
Sewage Sludge ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Sludge Dewatering ◽  
Alum Sludge

The potential environmental risks associated with the development of rare earth element production in Canada

2021 ◽  
Author(s):  
XIANGBO YIN ◽  
Christine Martineau ◽  
Isabelle Demers ◽  
Nathan Basiliko ◽  
Nicole J. Fenton
Keyword(s):  
Rare Earth ◽  
Rare Earth Element ◽  
Earth Element ◽  
Permanent Magnets ◽  
Indigenous Communities ◽  
Economic Benefits ◽  
Environmental Risks ◽  
Future Research ◽  
Ecological Health ◽  
Climate Conditions

The development of rare earth element (REE) production in Canada could generate significant economic benefits, but also poses serious potential risks to the environment. Rare earth elements have been widely used in modern life and industries, and even are indispensable in some crucial advanced technologies (e.g. permanent magnets). Increasing demand and the context of current US-China trade tensions provide a commercial economic development opportunity for Canada, which has rich resources of REEs, to develop its own sector. However, environmental and health issues caused by REE production are challenges Canada has to face, given that significant environmental impacts have been reported elsewhere (e.g. China). Little literature is available on the potential environmental risks associated with the development of REE production in Canada. It is important to know what environmental issues, particularly those generated by REEs themselves, may happen in Canada in the future. Therefore, three major aspects are evaluated and summarized from multidisciplinary perspectives in this paper: 1) a general conceptual model of the transport of REEs as a group in the environment is established; 2) toxicity levels, biochemical mechanisms, and physiological effects of REEs on different organisms are reviewed, and case-studies from existing REE mining areas are briefly highlighted; and 3) considering specific environmental condition and risk factors, environmental risks Canada may face in future REE developments are identified and discussed. This review concludes with a macro-identification of potential environmental risks associated with the development of REE production in Canada considering both human and ecological health. We note that ingestion, inhalation and dermal exposure for workers and surrounding residents (including potentially indigenous communities), and sub-arctic/arctic climate conditions could increase the risks to human and ecological health in future REE production development in Canada. Finally, future research directions are proposed that could be applied to both Canadian and other geographical contexts.

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