Dust control cost

Ranking equipment and teehnology options for an intended applieation then beeomes a matter of seleeting those projeet options with the shortest paybaek period. So, for example, if we compare a baghouse versus an electrostatic filter for a dust control application, an overall payback period for each option can be determined based on the capital investment for each piece of equipment, operating, maintenance, power costs, and other factors. 

If well designed and properly used, LVHV applications have the primary advantage of effective dust control. LVHV systems also require much less replacement airflow than conventional ventilation systems. This can result in significant savings in operating costs to condition the replacement air. These savings can help to offset the typically high installation costs for LVHV systems,... 

Maintain documentation Confirm effectiveness Evaluate hydrogeologic conditions Requires dust control High costs but suitable under certain fD... 

Some facilities use electrostatic precipitation for lime kiln dust control, which avoids generation of a wastewater stream. The captured dust can be recycled to the slaker to avoid dust disposal costs and assess the material balance of the operation, reducing raw material costs. 

Previously, municipalities and county boards allowed road spreading without cost to the oil companies (at times, even providing additional gravel). In effect, it had been a cheap paving and dust control method for these jurisdictions. Consequently, oil companies found it to be the least costly method of produced solids and slop oil disposal. However, there is concern with this method that heavy metals may leach into the surrounding groundwater. 

The cost of electricity consumed for dust control, increases with increasing hydraulic resistance unit and is calculated by the formula ... 

Dust control Loss of costly drugs, health hazards, contamination Sanitation Ease of cleaning (clean in place, CIP) and sterilization (sterilization in place, SIP)... 

Mohamed, M.A.K., J.M. Mutmansky, and R.A. Jankowski. 1996. Overview of proven low cost and high efficiency dust control strategies for mining operations. Mining Technology 78(897) 141-148. 

Foam. Water and a special blend of surfactant make the foam. Less water is necessary to achieve a given level of dust control. However, operating costs can be high. 

Rosbury, K.D., and R.A. Zimmer. 1983. Cost Effectiveness of Dust Control Used on Unpaved Haul Roads. 

There are a number of factors cited in the literature that promote decisions to control dust by process industries. These include factors related to technology, cost, and environmental laws and regulations. However, case histories have shown that the application of a dust control methodology depends not only on one or a blend of these factors but also on the attitudes of management and workers. 

In the absence of enforceable air quality and dust control laws favorable economics have historically been the prime incentive for the industry to control dust. The solution of a dust control problem usually involves increased capital and operating costs. This is true whether... 

Uniform, rehable flow of bulk soflds can allow the production of quaUty products with a minimum of waste, control dust and noise, and extend the hfe of a plant and maximi2e its productivity and output. By conducting laboratory tests and utili2ing experts with experience in applying soflds flow data, plant start-up delays that can impact schedule and cost can be eliminated. 

Small solid particles, present in dust and grit emissions, have very low settling velocities (Table 4.4) The collection efficiencies of simple cyclones are tlierefore, as shown in Figure 17.3, relatively low. Fabric filters, electrostatic precipitators or wet scrubbers may be required to remove particles <5 pm in size with an acceptable efficiency. Therefore the cost of pollution control inevitably increases when dealing with particle size distributions skewed towards the lower end. 

It is important to note that EAF dust is a hazardous waste because of its high concentrations of lead and cadmium. With 550,000 tons of EAF dust generated annually in the U.S., there is great potential to reduce the volume of this hazardous waste. The motivation for reducing this waste not only lies with the cost of air pollution controls, but with the cost for disposal. U.S. 

Fabric filters can be more costly to operate and maintain than electrostatic precipitators, cyclones, and scrubbers however, fabric filters are more practicable for filtration of specific dusts. For example fabric systems are the typical control method for toxic dusts from insecticide manufacturing processes, salt fumes from heat treating, metallic fumes from metallurgical processes, and other applications. Any other control method may not be as efficient, nor economically feasible for such applications. 

LVHV nozzles require very careful design. They can be effective in capturing and removing dust from operations that are otherwise difficult to control, e.g., hand-held tools and some fixed-machine grinding and other operations. Installation costs for LVHV systems can be considerably higher than for conventional local exhaust systems. However, operating costs can be lower be-... 

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