scholarly journals Influence of chemical residue on the environmental engineering

Author(s):  
Hadi Erfani ◽  

This review summarizes waste management and there is a need for better understanding the scientific findings for recycling the waste materials and suggests areas where further research is needed. In major cities around the world, waste management today is based on a comprehensive, sustainable and environmentally sound system of maximization. From this perspective you are one of the most important issues in urban management. From this perspective you are one of the most important issues in urban management. Therefore, a number of cities around the world have succeeded in achieving an integrated and efficient management to achieve this goal by designing and implementing a variety of programs using state of the art technology separation of origin, collection, transportation and processing mechanisms. The main components of a modern waste management system generally include production, collection, separation, recycling and disposal. Separation, processing and recycling may occur at any stage of waste stream management. Design and implementation of a comprehensive sustainable waste management system require consideration of different waste characteristics in the region. Today’s humanity has been subjected to some form of consumerism. Lowering the quality standards for all types of goods and products, reducing, lowering some standards for quality control of goods, lacking serious quality control over products, increasing population, increasing consumer demand, diversifying goods, fashionable packaging, people’s desire to buy product. Stylish and thousands of said and untold indices result in consumerism and the consequence of producing millions of tons of different types of waste that are produced on a daily basis.

2021 ◽  
pp. 36-41
Author(s):  
Lata Ghanshamnani ◽  
Ambily Adithyan ◽  
Shyamala K. Mani ◽  
Manisha Pradhan

Due to enhanced healthcare needs brought upon by the COVID-19 pandemic, the amount of biomedical waste generated has also increased manifold across the globe. With the world in global crisis due to the recent outbreak of the COVID-19 pandemic, it has put great pressure on the biomedical waste management system in India and around the world. To control the spread of the COVID-19 virus, proper disposal of the waste is essential to reduce any risk of secondary transmission. This paper investigates the situation of biomedical waste management in the city of Thane in Maharashtra due to the onset of COVID-19 and suggests some key recommendations to the policymakers to help handle biomedical waste from possible future pandemics. The study found that there was an 81% increase in the total biomedical waste (BMW) generation in 2020, when compared to 2019 and the yellow category waste from COVID-19 centres was the highest contributor to this waste. It was also found that though there was a slight increase in yellow category waste, the total biomedical waste from non- COVID healthcare facilities (HCFs) was comparable to that of the waste generated in HCFs during 2019, revealing that there was conscious reduction in the usage of single use PPEs at non- COVID HCFs. The city, despite owning a Central Biomedical Waste Treatment Facility (CBWTF), was dependent on another incinerator at the Hazardous Waste Management Treatment facility (HWTF) for treatment of the additional waste generated. Unforeseen situation like these, expose the vulnerability of our existing biomedical waste management system and reinforces the need for investing and improving them for strengthening preparedness in the future. The situation also demands periodic education on importance of source segregation and waste reduction through rational use, disinfection and disposal of PPEs.


2020 ◽  
Vol 06 (12) ◽  
Author(s):  
AUDREY OPARA ◽  

High obsolescence rate and end-of-life of electronic equipment resulting in high generation of electronic waste remains the biggest challenge with use of ICT in higher institutions. This study evaluated and developed an environmentally sound E-waste management system for higher institutions in Rivers State. The study employed research surveys in data acquisition through questionnaires, interviews and observation. Hypotheses were postulated to test areas of interest. Study indicated that institutions generate a reasonably amount of electronic/ICT wastes that are poorly managed. Desktop computers, printers, laptops, UPSs, old CRT monitors, and printer cartridges are the majority generated and available E-waste in storage in these institutions. Results revealed that the level of awareness on hazardous nature of E-waste among the sampled population was significant. The level awareness on E-waste recycling among sampled population was also significant. There are no accurate records or inventory of ICT equipment procurement and E-waste generation and disposal in the institutions. Policies and programs on source reduction E-waste segregation and handling, facilities for E-waste recovery, recycling and reuse are practically not available in the institutions. The study concluded that there is no proper management and disposal of electronic/ICT waste in higher institutions in Rivers State. Significant numbers of respondents expressed the need for the institutions to establish an integrated electronic/ICT waste recycling center. An Integrated E-waste management system that will not only address the current poor E-waste management practices in the institutions but also achieve environmentally sound management of E-wastes in the institutions has been developed in the study.


Author(s):  
Sarmad Hameed ◽  
Faizan Ur Rahman ◽  
Muhammad Amir ◽  
Zain Ul Abedin Babrawala ◽  
Moez Ul Hassan

Waste not just nowadays, but since centuries is one of the biggest problems of the world. Many governments and people came and went, many revolutionists, scientists, philanthropists, etc. too tried work on this aspect of life, but 100% output was not witnessed in any case. As time passes by, population around the world increased, hence resulting in large number of waste. Slowly and gradually this number grew so high that ultimately for many, it became problem to manage such enormous amounts, resulting in disastrous outcomes. With the help of modern technology, here in this paper we tried to solve this issue. To at least begin all on our own, we started it with implementing this system in our university, as we know that well begin is half done, soon it started to produce pretty good outputs and issue of mismanagement of waste, at least in our University, was resolved to pretty much extent. This paper focuses on how a self-designed array of Ultrasonic sensors can be used to get best possible results of dustbin’s status based on amount of waste in it. Further how fast will system be synchronizing and giving its current status in a span of few minutes to main server. Further locations of dustbins will also be prescribed in system hence enhancing real-time output effects of surrounding as well, helping in better outputs and analyses.


Author(s):  
Svetlana Shilkina

Global environmental problems all over the world are extremely acute, they are associated with the constantly growing man-made impact of man on the environment. Extraction and processing of resources affect production processes, the natural environment, and public health. This is especially true of waste generated in the production and consumption process, which cannot be used for further use due to technical or economic reasons. Despite the fact that municipal solid waste (MSW) constitutes less than 1 % of the total amount of industrial and domestic waste generated, it is the most annoying factor for the population, especially in large cities and adjacent areas. The basis of the strategy is the separate collection of waste by the population, the “sorting depth” depends on the current policy in this area: from 4–5 types of MSW in a number of European countries, to 40 in some regions of Japan. The subject of the research is the solid waste management system. The purpose of the article is to study the waste management system in the world and in Russia, analyze the current situation and choose a management strategy to solve the problem of waste disposal. Research methodology: financial and economic analysis. The article presents analytical data on the formation and disposal of electronic and plastic MSW, which have a clear tendency to significant growth, leading to an increase in incineration and disposal. Global problems are also relevant for Russia, where the level of MSW processing is not high and so far there are about ten incineration plants (WIPs) with low productivity. For comparison, the number of incinerators: in Switzerland – 29, in Japan – 1900, in Sweden – 21, in Denmark – 32, the total number of inhabitants in these countries is less than the population of Russia. New factories are expensive both during construction and operation. The article provides an assessment of the economic consequences of switching to MSW processing by incineration at an incineration plant, provides a financial and economic model of the project. Analysis of foreign experience made it possible to understand the causes of the problems and develop recommendations. This article is part of the author’s research in the field of choosing optimal strategies for managing the disposal of solid municipal waste, based on the collected material, it is planned to publish a monograph.


2021 ◽  
Vol 25 (1) ◽  
pp. 1128-1141
Author(s):  
Rudite Vesere ◽  
Silvija Nora Kalnins ◽  
Dagnija Blumberga

Abstract The paper examines the role and place of green enterprises, green jobs and the environmentally sound activities of society in waste management, taking into account the waste management hierarchy with an emphasis on waste reduction and prevention. In the course of the work, a questionnaire was prepared on the role green enterprises, green jobs and the environmentally friendly activities of society play in the development of a waste management system. The TOPSIS method of multi-criteria analysis was used to assess these roles in the development of a circular economy, including in relation to a waste management system. Through the assessment of the roles of these green measures in the field of waste management, the results clearly show that the most effective of the selected alternatives in the circular economy model in the field of separate collection and recycling of waste can be achieved via measure exercised by green enterprises, followed by green jobs and finally – the role of environmentally sound activities taken by the public, which play an important role as well.


2020 ◽  
Vol 167 ◽  
pp. 1950-1959 ◽  
Author(s):  
Sonali Dubey ◽  
Pushpa Singh ◽  
Piyush Yadav ◽  
Krishna Kant Singh

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