摘要:

AbstractWell‐developed contingency plans for potential emergencies at chemical plants provide safeguards for the plants and their surrounding communities. The size of the emergency planning zone (EPZ) is first determined by use of mathematical models which estimate the health effects and other consequences of toxic, flammable, and explosive chemical releases to the environment. Emergency response plans and procedures are then developed for the EPZ. Finally, a training program is developed and used to ensure that all emergency response personnel are aware of the actions which they must take in the event of an actual emergenc

ISSN:0278-4491    

DOI:10.1002/ep.3300070107

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

ISSN:0278-4491    

DOI:10.1002/ep.3300070102

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

ISSN:0278-4491    

DOI:10.1002/ep.3300070103

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

ISSN:0278-4491    

DOI:10.1002/ep.3300070105

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

ISSN:0278-4491    

DOI:10.1002/ep.3300070106

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

摘要:

AbstractWaste minimization is a key objective of power plant water/wastewater management. Even though membrane processes, such as reverse osmosis, have been used for makeup water treatment, their applications to waste minimization have been very limited. Although the field test results for a seeded reverse osmosis (SRO) system were not absolutely conclusive, the SRO system offers some unique features which may enable the utility industry to realize the advantages of membrane separation processes for wastewater concentration without extensive pretreatment and the associated costs.

ISSN:0278-4491    

DOI:10.1002/ep.3300070108

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

摘要:

AbstractA process has been developed for removing nitrates and heavy metals from open ponds. Four ponds were treated using the developed process. The process steps involved neutralization of the ponds, followed by biological denitrification. The nitrate ions were reduced from 40,000 mg/L to<50 mg/L at an average denitrification decrease rate of 300 mg/L per day. The denitrified water was then flocculated and filtered to remove solids. The water quality met discharge water chemical limits as well as biological test requirements.

ISSN:0278-4491    

DOI:10.1002/ep.3300070109

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

摘要:

AbstractThe performance and costs of two well water treatment systems are compared: an aqueous‐phase granular‐activated‐carbon (GAC) system, and an air stripping system with emission control. Both systems were installed to remove volatile organic compounds (VOC's) from the Verona Well Field, which supplies potable water to Battle Creek, Mic

ISSN:0278-4491    

DOI:10.1002/ep.3300070110

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

摘要:

AbstractDisposal of solid and hazardous wastes has become a concern in recent years. Incineration is a promising option for both, however, there are questions of public health effects and environmental acceptability of incinerator outputs. Ideally, operating conditions could be controlled to limit toxicity of residuals; to develop process models and feed‐back algorithms requires knowledge of the causal relationships between input and output to quantify induced responses.The composition of municipal solid wastes (MSW) from residential service areas was categorized and residuals from MSW incineration were examined for metal content and leachability. Sample size, sampling methodology, segregation by category and homogeneity of service area were determined to be dominant factors influencing the composition of MSW. There were notable differences in metal content of the fly and bottom ash residuals. Lead and zinc were the dominant trace metals in both ash residuals. Concentrations of cadmium and lead leached from the flyash were found to exceed EP limits. Lead and cadmium of both bottom ash and flyash fail proposed TCLP extraction limits by even larger margins. Permanent elimination of high‐temperature process ashes, classified as hazardous, must be demonstra

ISSN:0278-4491    

DOI:10.1002/ep.3300070111

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY

摘要:

AbstractThe recovery of volatile organic compounds (VOCs) from contaminated air generated by small industrial operations such as coating operations and spray painting is an important alternative to other air cleaning techniques such as thermal or catalytic incineration. Three technologies—adsorption, absorption, and condensation—are discussed herein. The focus of this article, and by far the most widely applied technique, is activated carbon adsorption. Commercial systems are generally designed for gas streams containing roughly 300 to 5,000 ppm VOC at flow rates from 200 to 100,000 ft3(STP)/min (5.7 to 2,830 m3(STP)/min).General design parameters and costs, along with their application to example cases, are given for VOC recovery by activated carbon adsorption and condensation. No commercial systems specifically for VOC recovery by absorption have yet been reported, though this technology is extremely important for other air pollution control ne

ISSN:0278-4491    

DOI:10.1002/ep.3300070112

出版商:American Institute of Chemical Engineers    

年代:1988

数据来源: WILEY