Source, Treatment, and Disposal of Aquaculture Solid Waste: A Review

2021 ◽  
Vol 147 (3) ◽  
pp. 03120012
Author(s):  
Yuqi Wu ◽  
Kang Song
Author(s):  
Kriti Jain ◽  
Chirag Shah

The increasing volume and complexity of waste associated with the modern economy as due to the ranging population, is posing a serious risk to ecosystems and human health. Every year, an estimated 11.2 billion tonnes of solid waste is collected worldwide and decay of the organic proportion of solid waste is contributing about 5 per cent of global greenhouse gas emissions (UNEP). Poor waste management - ranging from non-existing collection systems to ineffective disposal causes air pollution, water and soil contamination. Open and unsanitary landfills contribute to contamination of drinking water and can cause infection and transmit diseases. The dispersal of debris pollutes ecosystems and dangerous substances from waste or garbage puts a strain on the health of urban dwellers and the environment. India, being second most populated country of the world that too with the lesser land area comparatively, faces major environmental challenges associated with waste generation and inadequate waste collection, transport, treatment and disposal. Population explosion, coupled with improved life style of people, results in increased generation of solid wastes in urban as well as rural areas of the country. The challenges and barriers are significant, but so are the opportunities. A priority is to move from reliance on waste dumps that offer no environmental protection, to waste management systems that retain useful resources within the economy [2]. Waste segregation at source and use of specialized waste processing facilities to separate recyclable materials has a key role. Disposal of residual waste after extraction of material resources needs engineered landfill sites and/or investment in waste-to-energy facilities. This study focusses on the minimization of the waste and gives the brief about the various initiations for proper waste management system. Hence moving towards the alternatives is the way to deal with these basic problems. This paper outlines various advances in the area of waste management. It focuses on current practices related to waste management initiatives taken by India. The purpose of this article put a light on various initiatives in the country and locates the scope for improvement in the management of waste which will also clean up the unemployment.


2019 ◽  
Vol 57 ◽  
pp. 20-29 ◽  
Author(s):  
Manoj Govind Kharat ◽  
Shankar Murthy ◽  
Sheetal Jaisingh Kamble ◽  
Rakesh D. Raut ◽  
Sachin S. Kamble ◽  
...  

Author(s):  
Ran Yagasa ◽  
Rithy Uch ◽  
Phalla Sam

Driven by economic development, population growth, change in life style, and consumption patterns, Cambodia is faced with equally rapid increase of solid waste, with MSW disposal amount attaining 1,709,379 tons/year in 2018. Various policy instruments and legislations have been developed over the years in response to this long-existing crisis, which effectively translated into tangible improvements on the ground. But municipalities continue to suffer from weak waste management system including collection, transportation, treatment, and disposal. Resource recovery almost entirely depends on informal sector while efforts for reduce and reuse are still weak, while presenting vast opportunity if effective policies are employed and implemented. The ongoing governance reform involving functional decentralization of waste management service is being implemented although at a slow pace.


2015 ◽  
Vol 768 ◽  
pp. 740-745
Author(s):  
Cheng Qiu ◽  
Chun Li Ye ◽  
Li Yong Yang ◽  
Chang Bing Ye

With rapid industrialization, continuous economic development, increasing population and living standards, the amount of general industrial solid waste generated in Kunming has increased continuously from 2001 to 2011. In 2013, the total general industrial solid waste generation was 33.19 million tons, deceased by 9.59% over 2011. The disposal and comprehensive use amount of general industrial solid waste in Kunming has increased dramatically from 2001 to 2013, and the disposal and comprehensive use rate of industrial solid waste increased fast from 64.39% in 2002 to 97.68% in 2013,but the comprehensive use rate of general industrial solid waste has not increased largely. Kunming’s general industrial solid waste treatment capacity has obvious difference from generation capacity, the produced industrial solid waste each year has the utilization of nearly 40%, with about 60% of the solid waste we cannot use. The disposal and comprehensive use rate of general industrial solid waste is different in different region of Kunming. Although the resource utilization of general industrial solid waste has made some progress in Kunming, the technical level is still very low compared with developed region, specially, the comprehensive utilization rate of phosphogypsum and tailings was not beyond 17% in 2013. Thereafter, much still can be done to improve the treatment and disposal of industrial solid waste in Kunming.


2013 ◽  
Vol 664 ◽  
pp. 236-239
Author(s):  
Zhen Min Chen ◽  
Hai Ying Zhang

Solid Waste Pollution Control is one of the main special courses offered to students whose major is Environmental Engineering. It aims to let students know basic knowledge and control technologies of solid waste pollution, so that they can solve problems on solid waste treatment and disposal. With increasing generation of solid waste (municipal solid waste and industrial solid waste) in China, solid waste control becomes one of the focus environmental problems facing our country, which depends on efforts of environmental professionals. Solid waste control technology has seen a fast development in recent years. In order to keep up with solid waste control nowadays, it is necessary to develop this course to improve teaching effects. Based on analysis of the current conditions of this course, the paper offers a construction plan for the course in the following aspects: adjustment of the course teaching content, enrichment of teaching methods and teaching mode, preparation of test database and exercise database and suggestion of ways to increasing teaching effect of this course.


2020 ◽  
Vol 46 (1) ◽  
pp. 44-57
Author(s):  
Manoj Govind Kharat ◽  
Shankar Murthy ◽  
Sheetal Jaisingh Kamble ◽  
Mukesh Govind Kharat

Selection of appropriate municipal solid waste (MSW) treatment and disposal technology is a complex multi-criteria process. This paper demonstrates the reliability of the use of multi-criteria decision-making (MCDM) framework for the purpose of selecting the best MSW treatment and disposal alternatives. In this paper, a modified fuzzy Delphi-AHP-TOPSIS methodology is developed for the selection of the most appropriate MSW treatment and disposal technology. The study provides a systematic three-stage methodology towards technology selection. In the first stage, experts' opinions were sought to select the relevant criteria and the fuzzy Delphi Method (FDM) was used to obtain the critical factors for the evaluation of alternatives. In the second stage, the criteria weights and their importance degree were calculated by using AHP. Finally, the TOPSIS technique was used for ranking the alternatives to determine the most appropriate option. The study identifies a minimal relevant set of evaluation criteria and appropriate technologies for the handling, treatment and disposal of MSW in a more economical and environmentally sustainable way. Thus, the developed MCDM framework enables decision-makers to make informed decisions and achieve optimal results. It helps the decision makers select the best possible technology in a scientific manner. To demonstrate the approach taken, a real case of Mumbai city is taken.


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