By Gerald R. Visgilio, Diana M. Whitelaw
This ebook is the results of a convention held biannually on the Goodwin-Niering heart for Conservation Biology and Environmental experiences at Connecticut university. It makes use of an interdisciplinary method of concentrate on vital ecological affects of acid deposition. The booklet combines examine findings and the coverage analyses of specialists from diverse educational disciplines with the positions complex by means of representatives of varied nongovernmental agencies.
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Additional info for Acid in the Environment: Lessons Learned and Future Prospects
46 ● ● ● Handbook of Pollution Prevention and Cleaner Production Sea water is used for cooling purposes in the power plant and sulfuric acid plants. It is pumped to the site and distributed as necessary. Chlorinating treatment for the sea water is provided. A closed circuit treated cooling water system is provided to cool equipment not connected to the sea water cooling system. A fire water system using water from the industrial water storage tank is furnished. Material handling facilities handle all importing and exporting materials both inland and by sea.
Operations inevitably lead to spills and leaks. Floor, wall, and equipment exterior washing is typically performed using water hoses equipped with spray nozzles. It may also involve the use of mops and squeegees. Wastewater is also generated by clean-up of spills and leaks. Wastewater from these operations contains formulation ingredients, solvents, and wetting agents Other sources of wastewater include: pollution control scrubber water; Department of Transportation leak test water; safety equipment wash water; laboratory equipment wash water; shower water; laundry water; fire protection test water; contaminated precipitation runoff Solid/Hazardous/Residual Wastes Fertilizer manufacturing À general One of the largest solid wastes is phosphogypsum which is produced The use of waste phosphogypsum for other during phosphoric acid production.
This rock is reacted with the sulfuric acid, for a time, and then filtered. Cooling of the reaction section is necessary. Off gases are removed, scrubbed (cleaned) with water and discharged to atmosphere. The phosphoric acid removed from the filters is sent to storage as either 30% or 40% P2O5. Solids removed by the filters are sent to disposal/storage as a waste product. 5 Properties of Phosphoric Acid P2O5 Solids H2SO4 F Cl CaO Aluminum (Al2O3) Iron (Fe2O3) Magnesium (MgO) SiO2 Cd Specific gravity, at 20 C 54% Max.