Sustainable Treatment of Landfill Leachate Using Constructed Wetlands

2021 ◽  
pp. 237-255
Author(s):  
Vivek Rana
Keyword(s):  
Developing Countries ◽  
Constructed Wetlands ◽  
Developed Countries ◽  
Efficient Technology ◽  
Treatment Technology ◽  
Leachate Treatment ◽  
Wetland Treatment ◽  
High Investment ◽  
Sustainable Treatment ◽  
Energy Efficient Technology

Sanitary landfilling is the major method of disposal of municipal solid waste (MSW) in developing countries. The disposal of MSW in landfills generates a large amount of highly toxic leachate, which has high potential hazards for the public, flora, fauna health and ecosystems. Advanced leachate treatment systems using biological and chemical treatment methods are recently implemented in developed countries, but high investment and operating costs restricted their application in most of the developing countries. To overcome this problem, an alternative sustainable treatment technology such as phytoremediation could be beneficial. The constructed wetland treatment system is an economical alternative for leachate treatment using local resources and is an energy-efficient technology. These green systems utilize anaerobic and aerobic reactions to break down, immobilize, or incorporate organic substances and other contaminants from polluted effluent. This chapter highlights the recent advances in the treatment of landfill leachates using constructed wetlands.

scholarly journals HORSETAIL PLANT PHYTOREMEDIATION POTENTIAL IN THE DECREASE OF HEAVY METAL IRON (Fe) IN LEACHATE AT CILOWONG’S LANDFILL AREA SERANG CITY

2019 ◽  
Vol 3 (1) ◽  
pp. 103
Author(s):  
Fitri Dwirani ◽  
Ade Ariesmayana ◽  
Agung Sudrajad ◽  
Irvan Nurhakim ◽  
Deni Ihwanudin Firdaus
Keyword(s):  
Heavy Metal ◽  
Experimental Design ◽  
Constructed Wetlands ◽  
Aquatic Plants ◽  
Flow System ◽  
Positive Impact ◽  
Heavy Metal Concentration ◽  
Treatment Technology ◽  
Leachate Treatment ◽  
The Third

<strong>Aim:</strong> This study aims to determine the potency of horsetail plant to remove heavy metal concentration. <strong>Methodology and Results:</strong> There are 54 horsetail which are divided into three batches for experimental design by varying number of plants. The first batch used 12 plants, the second batch used 18 plants, and the third batch used 24 plants. The research furthermore used the experimental method with the subsurface flow system treatment. The sample was taken and observed for seven days, with two samplings daily. The results therefore showed that the first batch gave a 6.83% impact on reducing concentration Fe, a batch at 10.28%, and batch three at 16.26%. The average of reducing concentration Fe reached approximately 11%. Therefore, the detention of the process of leachate constructed wetland reactors could significantly reduce Fe contaminant in leachate. <strong>Conclusion, significance, and impact of study: </strong>This research provides a solution to mitigate the environment by adopting the accumulator of Horsetail plants (<em>Equisetem hyemale</em>) in the constructed wetlands reactor experiment. From the three reactors about 0.03 mg/L of heavy metal iron was removed after a seven day run. Therefore, aquatic plants showed a positive impact in reducing environmental pollution a trend that can be adopted in wastewater and leachate treatment technology in Indonesia.

scholarly journals Natural and Constructed Wetlands in Canada: An Overview

2002 ◽  
Vol 37 (2) ◽  
pp. 295-325 ◽  
Author(s):  
Gavin Kennedy ◽  
Tatiana Mayer
Keyword(s):  
Constructed Wetlands ◽  
Anthropogenic Activities ◽  
Cost Effective ◽  
Freshwater Wetland ◽  
Cold Weather ◽  
Research Needs ◽  
Treatment Technology ◽  
Wetland Treatment ◽  
Natural Wetlands ◽  
Broad Variety

Abstract A review of freshwater wetland research in Canada was conducted to highlight the importance of these ecosystems and to identify wetland research needs. Both natural and constructed wetland systems are discussed. Natural wetlands are an important part of the Canadian landscape. They provide the habitat for a broad variety of flora and fauna and contribute significantly to the Canadian economy. It is estimated that the total value derived from consumptive and non-consumptive activities exceeds $10 billion annually. The past decades have witnessed the continued loss and degradation of wetlands in Canada. In spite of recent protection, Canadian wetlands remain threatened by anthropogenic activities. This review shows that more research on fate and transport of pollutants from urban and agricultural sources in wetland systems is needed to better protect the health and to assure the sustainability of wetlands in Canada. Furthermore, improved knowledge of hydrology and hydrogeochemistry of wetlands will assure more effective management of these ecosystems. Lastly, better understanding of the effect of climate change on wetlands will result in better protection of these important ecosystems. Constructed wetlands are man-made wetlands used to treat non-point source pollution. The wetland treatment technology capitalizes on the intrinsic water quality amelioration function of wetlands and is emerging as a cost-effective, environmentally friendly method of treating a variety of wastewaters. The use of wetland technology in Canada is, however, less common than in the U.S.A. A number of research needs has to be addressed before the wetland treatment technology can gain widespread acceptance in Canada. This includes research pertaining to cold weather performance, including more monitoring, research on design adaptation and investigation of the effects of constructed wetlands on wildlife.

Technology for sustainability: the role of onsite, small and community scale technology

2005 ◽  
Vol 51 (10) ◽  
pp. 15-20 ◽  
Author(s):  
G. Ho
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
Rural Areas ◽  
Food Production ◽  
Lower Cost ◽  
Developed Countries ◽  
Research Development ◽  
Treatment Technology ◽  
Current Technology

An overview of available onsite, small and community scale wastewater treatment technology shows that it is diverse compared to current technology for centralised collection and treatment of wastewater. An analysis of the onsite, small and community scale technology for achieving sustainability shows that it more conducive to achieving sustainability than the centralised technology. It is likely, however, that its application is in remote and rural areas, where the technology should be improved and integrated with other technology sectors (energy, food production) for improved sustainability. Opportunities exist in new urban developments to achieve similar outcomes, but concerted efforts are required to demonstrate or showcase sustainability benefits in real situations. A huge potential also exists for the use of onsite, small and community scale technology in developing countries for achieving the same sustainability outcomes. It is likely to succeed if the technology is modified to be of lower cost but based on the same science, and that research, development and demonstrations in developed countries are shown to be successful.

Emerging Nutrition Gaps in a World of Affluence - Micronutrient Intake and Status Globally

2011 ◽  
Vol 81 (4) ◽  
pp. 238-239 ◽  
Author(s):  
Manfred Eggersdorfer ◽  
Paul Walter
Keyword(s):  
Developing Countries ◽  
Human Health ◽  
Old Age ◽  
Molecular Basis ◽  
Health Benefit ◽  
Developed Countries ◽  
Micronutrient Deficiencies ◽  
New Science ◽  
Health And Nutrition ◽  
Micronutrient Intake

Nutrition is important for human health in all stages of life - from conception to old age. Today we know much more about the molecular basis of nutrition. Most importantly, we have learnt that micronutrients, among other factors, interact with genes, and new science is increasingly providing more tools to clarify this interrelation between health and nutrition. Sufficient intake of vitamins is essential to achieve maximum health benefit. It is well established that in developing countries, millions of people still suffer from micronutrient deficiencies. However, it is far less recognized that we face micronutrient insufficiencies also in developed countries.

Country Rankings of Women's Status: An Alternative Index

1995 ◽  
Vol 34 (4III) ◽  
pp. 1025-1039 ◽  
Author(s):  
Yasmeen Mohiuddln
Keyword(s):  
Developing Countries ◽  
Composite Index ◽  
Developed Countries ◽  
Women's Status ◽  
Current Status ◽  
Implicit Assumption ◽  
Women’S Status ◽  
Country Rankings ◽  
Population Crisis ◽  
Status Of Women

The purpose of the present paper is to formulate a composite index of the status of women and to rank both developed and developing countries on the basis of that index. This index is presented as an alternative or complement to the current status of women index, published by the Population Crisis Committee (PCC) and used by the World Bank and the United Nations, which focuses on indicators measuring health, education, employment, marriage and childbearing, and social equality. The paper argues that these indicators have a poverty-bias and measure women's status in terms of structural change rather than in terms of their welfare vis-ii-vis men. The PCC index is also based on the implicit assumption that women's status in developing countries ought to be defined in a similar way as in developed countries, thus including primarily only those indicators which are more relevant for developed countries. To remedy these defects, the paper presents an alternative composite index, hereafter labelled the Alternative Composite (AC) index, based on many more indicators reflecting women's issues in both developed and developing countries. The results of the statistical analysis show that the ranking of countries based on the AC index is significantly different from the PCC index.

International Economic Assistance in the 1970's — A Critique of Partners in Development (Review Article)

1970 ◽  
Vol 10 (4) ◽  
pp. 469-490
Author(s):  
Nurul Islam
Keyword(s):  
Developing Countries ◽  
Foreign Aid ◽  
International Aid ◽  
Developed Countries ◽  
Armed Conflicts ◽  
Economic Assistance ◽  
Self Help ◽  
Service Charge ◽  
The Developed Countries ◽  
Defence Expenditure

Foreign economic aid is at the cross-roads. There is an atmosphere of gloom and disenchantment surrounding international aid in both the developed and developing countries — more so in the former than in the latter. Doubts have grown in the developed countries, especially among the conservatives in these countries, as to the effectiveness of aid in promoting economic development, the wastes and inefficiency involved in the use of aid, the adequacy of self-help on the part of the recipient countries in husbanding and mobilising their own resources for development and the dangers of getting involved, through ex¬tensive foreign-aid operations, in military or diplomatic conflicts. The waning of confidence on the part of the donors in the rationale of foreign aid has been accentuated by an increasing concern with their domestic problems as well as by the occurrence of armed conflicts among the poor, aid-recipient countries strengthened by substantial defence expenditure that diverts resources away from development. The disenchantment on the part of the recipient countries is, on the other hand, associated with the inadequacy of aid, the stop-go nature of its flow in many cases, and the intrusion of noneconomic considerations governing the allocation of aid amongst the recipient countries. There is a reaction in the developing countries against the dependence, political and eco¬nomic, which heavy reliance on foreign aid generates. The threat of the in¬creasing burden of debt-service charge haunts the developing world and brings them back to the donors for renewed assistance and/or debt rescheduling.

IMPACT OF NATIONAL DISASTER COVID-19, INDONESIA TOWARDS ECONOMIC RECESSION

2020 ◽  
Author(s):  
endang naryono
Keyword(s):  
Developing Countries ◽  
Economic Recession ◽  
Developed Countries ◽  
Social Distancing ◽  
Poor Countries ◽  
Corona Virus ◽  
The World ◽  
History Of ◽  
National Disaster

Covid-19 or the corona virus is a virus that has become a disaster and a global humanitarian disaster began in December 2019 in Wuhan province in China, April 2020 the spread of the corona virus has spread throughout the world making the greatest humanitarian disaster in the history of human civilization after the war world II, Already tens of thousands of people have died, millions of people have been infected with the conona virus from poor countries, developing countries to developed countries overwhelmed by this virus outbreak. Increasingly, the spread follows a series of measurements while patients who recover recover from a series of counts so that this epidemic becomes a very frightening disaster plus there is no drug or vaccine for this corona virus yet found, so that all countries implement strategies to reduce this spread from social distancing, phycal distancing to with a city or country lockdown.

A Decade of the World Trade Organization and the Trade Performance of Muslim Countries

2010 ◽  
Vol 27 (4) ◽  
pp. 23-44
Author(s):  
Ruzita Mohd. Amin
Keyword(s):  
Developing Countries ◽  
World Trade Organization ◽  
World Trade ◽  
Developed Countries ◽  
Playing Field ◽  
Muslim Countries ◽  
The World ◽  
The Developed Countries ◽  
Merchandise Trade ◽  
Wto Agreements

The World Trade Organization (WTO), established on 1 January 1995 as a successor to the General Agreement on Tariffs and Trade (GATT), has played an important role in promoting global free trade. The implementation of its agreements, however, has not been smooth and easy. In fact this has been particularly difficult for developing countries, since they are expected to be on a level playing field with the developed countries. After more than a decade of existence, it is worth looking at the WTO’s impact on developing countries, particularly Muslim countries. This paper focuses mainly on the performance of merchandise trade of Muslim countries after they joined the WTO. I first analyze their participation in world merchandise trade and highlight their trade characteristics in general. This is then followed by a short discussion on the implications of WTO agreements on Muslim countries and some recommendations on how to face this challenge.

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