Disposal of hazardous industrial waste in cement kiln – A pilot study of acid tar sludge

2021 ◽  
pp. 0734242X2110555
Author(s):  
Rahul Baidya ◽  
Sadhan Kumar Ghosh
Keyword(s):  
Hazardous Waste ◽  
Feed Rate ◽  
Treatment Plant ◽  
Ambient Air ◽  
Cement Kiln ◽  
Cement Plant ◽  
Hazardous Waste Disposal ◽  
Alternative Means ◽  
Central Pollution Control Board ◽  
Disposal Problem

Acid tar sludge (ATS) is a hazardous waste generated in steel plants as a process by-product. ATS disposal is a major challenge for the steel industry around the world and specifically for developing nations. Hazardous wastes are usually disposed of in a dedicated expensive thermal treatment plant as per existing rules. Due to inadequate capacity of treating the total amount of hazardous waste, study of other economical options are required. India generates over 7.2 million metric tonnes of hazardous waste annually as per Central Pollution Control Board (CPCB), Government of India. Thus, co-processing of ATS in cement plant as an alternative means of disposal was studied based on a number of trials. During the five trials of 5 day each, feed rate of ATS was maintained at 0.4 tonne per hour (TPH) with an average coal feed rate of 10 TPH. No incremental variations in emissions were observed during the trials. The analysis further revealed insignificant impact on clinker quality, leach behaviour and cement property. The study also showed negligible impact on ambient air quality based on NO x, SO2, RSPM, SPM measurement at varying location around the cement plant. Thus, co-processing of hazardous waste such as ATS in cement plant can be an effective way to address the hazardous waste disposal problem in developing countries such as India.

A Centralized Hazardous Waste Treatment Plant: The Facilities of the Zvsmm at Schwabach as an Example

1994 ◽  
Vol 29 (8) ◽  
pp. 235-250 ◽  
Author(s):  
Norbert Amsoneit
Keyword(s):  
Hazardous Waste ◽  
Waste Treatment ◽  
Treatment Plant ◽  
Waste Incinerator ◽  
Physical Plant ◽  
Treatment Centre ◽  
Hazardous Waste Treatment ◽  
Waste Treatment Plant ◽  
Pre Treatment ◽  
Inorganic Waste

As a rule, hazardous waste needs a pre-treatment, either a thermal or a chemical-physical one, before it can be disposed of at a landfill. The concentration of different kinds of treatment facilities at a Centralized Hazardous Waste Treatment Plant is advantageous. The facility of the ZVSMM at Schwabach is presented as an outstanding example of this kind of Treatment Centre. The infrastructure, the chemical-physical plant with separate lines for the treatment of organic and inorganic waste and the hazardous waste incinerator are described. Their functions are discussed in detail. Emphasis is laid on handling the residues produced by the different treatment processes and the final disposal.

Hazardous characteristics of dust waste from metal manufacturing industries in South Korea

2021 ◽  
pp. 0734242X2199655
Author(s):  
Cheol-Woo Yoon ◽  
Young-Sam Yoon ◽  
Su-Yeon Hong ◽  
Tea-wan Jeon ◽  
Sun-Kyoung Shin
Keyword(s):  
South Korea ◽  
Hazardous Waste ◽  
Waste Disposal ◽  
Hazardous Materials ◽  
Manufacturing Industries ◽  
South Korean ◽  
Hazardous Waste Disposal ◽  
Percentage Points ◽  
Two Samples ◽  
Or Fires

The Ministry of Environment, South Korea, is involved in efforts to reduce safety-related accidents that could occur during hazardous waste disposal and minimise the environmental impacts of waste disposal. To reach such goals, new factors have been added that contribute to the hazardous characteristics of hazardous waste. The Ministry is also expanding regulations on inorganic and organic components present in hazardous waste for these factors and continues to correct the classification system to establish standards for waste components. Metallic dust, for example, is mostly generated during the operation of melting furnaces or precipitators and dangerous materials contained in this dust may cause accidents, such as explosions or fires. South Korean accident cases have confirmed that waste containing hazardous materials, such as Mg, Al and Mg–Al alloys, can cause such events. Therefore, this study analysed 28 dust samples collected from the dust accumulated in precipitators in 28 metal manufacturing facilities in South Korea. Nine samples were flammable and four samples were reactive to water. Two samples also exhibited leaching toxicities. The results applied to relevant laws in South Korea showed that the proportion of waste containing hazardous characteristics increased from 7.14% in the previous management category to 39.29% in the extended category, an overall increase of 32.15 percentage points.

Optimization of Transportation for Hazardous Waste Disposal from Medical Units

2015 ◽  
Vol 811 ◽  
pp. 378-382
Author(s):  
Mihaela Debita ◽  
Carmina Liana Musat ◽  
Madalina Rus ◽  
Elena Mereuta ◽  
Claudiu Mereuta
Keyword(s):  
Hazardous Waste ◽  
Waste Disposal ◽  
Medical Waste ◽  
Transportation Costs ◽  
Healthcare Facilities ◽  
Final Disposal ◽  
Hazardous Waste Disposal ◽  
A Company ◽  
Technical Considerations

The paper presents some technical considerations regarding the medical waste transportation and an optimization calculus for minimizing the transportation costs of a company specialized and authorized in collecting, transporting and final disposal of medical waste generated by healthcare facilities. The calculus revealed that it is possible to significantly reduce the transportation costs (up to 65.52%), but there are also other analysis possibilities like considering the in-between points from sources to destinations, alternative paths, limits to the amount of medical waste on each path, time.

Adverse Health Effects at a Tennessee Hazardous Waste Disposal Site

1984 ◽  
Vol 1 (2) ◽  
pp. 183-204 ◽  
Author(s):  
ROBERT H. HARRIS ◽  
JOSEPH H. HIGHLAND ◽  
JOSEPH V. RODRICKS ◽  
STAVROS S. PAPADOPULOS
Keyword(s):  
Health Effects ◽  
Hazardous Waste ◽  
Waste Disposal ◽  
Disposal Site ◽  
Waste Disposal Site ◽  
Adverse Health Effects ◽  
Hazardous Waste Disposal ◽  
Adverse Health

Evaluating Risk After a Hazardous Waste Treatment Plant Released Persistent Organic Pollutants. Part 1. Background and Policy Issues

2018 ◽  
Vol 2 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Tee L. Guidotti
Keyword(s):  
Risk Assessment ◽  
Risk Management ◽  
Health Risk ◽  
Human Health ◽  
Hazardous Waste ◽  
Organic Pollutants ◽  
Persistent Organic Pollutants ◽  
Waste Treatment ◽  
Human Health Risk ◽  
Treatment Plant

On 16 October 1996, a malfunction at the Swan Hills Special Waste Treatment Center (SHSWTC) in Alberta, Canada, released an undetermined quantity of persistent organic pollutants to the atmosphere. An ecologically based, staged health risk assessment was conducted to evaluate the human health risk, the findings of which are presented in Part 2, on Ecotoxicology and Human Health Risk. The incident resulted in the largest fine for an environmental infraction in Alberta history up to that time. Despite the incident, the province of Alberta has continued to subsidize the facility and has kept it in operation, with changes in management. The policy rationale is that if the facility were not available, accumulation and possible diversion of hazardous waste into illegal disposal alternatives would threaten the environment much more than operation of the plant. This case study illustrates an ecological approach to risk assessment and an attempted culturally sensitive approach to risk management. Incidents in which people are exposed to toxic substances do not occur in a social vacuum. Risk management strategies must be adapted to groups with different cultural values and expectations. Community and individual responses to such incidents, and the development of health advisory messages, may depend on presenting information on exposure and risk in terms consistent with cultural patterns among subpopulations in the community.

A sewer ventilation model applying conservation of momentum

2011 ◽  
Vol 64 (6) ◽  
pp. 1374-1382 ◽  
Author(s):  
M. Ward ◽  
G. Hamer ◽  
A. McDonald ◽  
J. Witherspoon ◽  
E. Loh ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Treatment Plant ◽  
Ambient Air ◽  
Momentum Equation ◽  
Ventilation Rate ◽  
Water Interface ◽  
Model Accuracy ◽  
Air Water Interface ◽  
Conservation Of Momentum ◽  
Gravity Sewer

The work presented herein was completed in an effort to characterize the forces influencing ventilation in gravity sewers and to develop a mathematical model, based on conservation of momentum, capable of accounting for friction at the headspace/pipe interface, drag at the air/water interface, and buoyancy caused by air density differences between a sewer headspace and ambient. Experiments were completed on two full scale sewer reaches in Australia. A carbon monoxide-based tracer technique was used to measure the ventilation rate within the sewer headspaces. Additionally, measurements of pressure, relative humidity, and temperature were measured in the ambient air and sewer headspace. The first location was a five kilometre long sewer outfall beginning at a wastewater treatment plant and terminating at the ocean. The second location was a large gravity sewer reach fitted with ventilation fans. At the first location the headspace was entirely sealed except for openings that were controlled during the experiments. In this situation forces acting on the headspace air manifested mostly as a pressure distribution within the reach, effectively eliminating friction at the pipe wall. At the second location, air was forced to move near the same velocity as the wastewater, effectively eliminating drag at the air/water interface. These experiments allowed individual terms of the momentum equation to be evaluated. Experimental results were compared to the proposed mathematical model. Conclusions regarding model accuracy are provided along with model application guidance and assumptions.

Organic components in leachates from hazardous waste disposal sites

1999 ◽  
Vol 17 (3) ◽  
pp. 186-197 ◽  
Author(s):  
Akio Yasuhara ◽  
Hiroaki Shiraishi ◽  
Masataka Nishikawa ◽  
Takashi Yamamoto ◽  
Osami Nakasugi ◽  
...  
Keyword(s):  
Hazardous Waste ◽  
Waste Disposal ◽  
Hazardous Waste Disposal ◽  
Organic Components
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