Heuristic and simulation techniques for the scheduling of hazardous waste processing in an integrated treatment facility

1994 ◽  
Vol 21 (5) ◽  
pp. 752-761 ◽  
Author(s):  
P. E. Yundt ◽  
B. W. Baetz ◽  
G. G. Patry
Keyword(s):  
Hazardous Waste ◽  
Waste Treatment ◽  
Treatment Plant ◽  
Simulation Models ◽  
Integrated Treatment ◽  
Treatment Facility ◽  
Unit Process ◽  
Average Completion Time ◽  
Hazardous Waste Treatment ◽  
Operating Policies

The basic strategies for optimizing processing schedules of hazardous waste in an integrated hazardous waste treatment facility are analyzed. Five schedule optimization heuristics were evaluated on six simulation models of hypothetical integrated hazardous waste treatment facilities. The six models represented combinations of one of three unit process configurations and one of two facility operating policies. The heuristics were evaluated with respect to their ability to minimize the average completion time (makespan) of a specified set of jobs. The same five heuristics were applied to a model representing the physical and chemical treatment plant of the Alberta Special Waste Management Corporation. Operation under two operating policies for this case study was evaluated, and the results were compared with the hypothetical model results. Some heuristics were found to be capable of reducing makespans by 13–14% relative to the first in, first out heuristic. Key words: hazardous waste treatment, scheduling, heuristics, simulation modelling.

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.

Evaluating Risk After a Hazardous Waste Treatment Plant Released Persistent Organic Pollutants: Part 3, Aboriginal Health Risk and Impact

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

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 (POPs) into the atmosphere, including polychlorinated biphenyls, dioxins, and furans. The circumstances of exposure are detailed in Part 1, Background and Policy Issues. An ecologically based, staged health risk assessment was conducted in two parts with two levels of government as sponsors. The first, called the Swan Hills Study, is described in Part 2. A subsequent evaluation, described here in Part 3, was undertaken by Health Canada and focused exclusively on Aboriginal residents in three communities living near the lake, downwind, and downstream of the SHSWTC of the area. It was designed to isolate effects on members living a more traditional Aboriginal lifestyle. Aboriginal communities place great cultural emphasis on access to traditional lands and derive both cultural and health benefits from “country foods” such as venison (deer meat) and local fish. The suspicion of contamination of traditional lands and the food supply made risk management exceptionally difficult in this situation. The conclusion of both the Swan Hills and Lesser Slave Lake studies was that although POPs had entered the ecosystem, no effect could be demonstrated on human exposure or health outcome attributable to the incident. However, the value of this case study is in the detail of the process, not the ultimate dimensions of risk. The findings of the Lesser Slave Lake Study have not been published previously and are incomplete.

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