| Different industries, different raw material consumption, the different processes the amount of hazardous waste generated and composition are very different, Dangerous chemical wastes the chemical industry is a major industry. Chemical hazardous waste volume and composition often as product variety, production technology, installation of different size and quality of the material were quite different. Therefore, the hazardous waste generated by the chemical industry to conduct survey, Screening of some quantity of hazardous waste generated, against a large key enterprises as the research object, and its main products, production processes, as well as dangerous waste and to do analysis and evaluation, Estimate of its hazardous waste generation factor, will contribute to a comprehensive system to control various types of chemical companies and various production processes generate hazardous waste situation. To prevent the registration of false declaration of hazardous wastes, to monitor the flow of targeted, The flow of hazardous waste to avoid environmental pollution caused to society and effectively to the management of hazardous waste chemical industry to do with reality.Hazardous waste generated in Liaoning Province is one of the provinces than larger, and large-scale petrochemical and chemical companies are more hazardous waste types and quantities of the share is higher. According to report and registration, province of hazardous waste generated in 2004 was 2.083 million the amount t, the province in 77 major chemical companies produce nearly 580,000 tons of hazardous waste total, the province's total output of 28%.The subject specific research process is the use of rapid browsing method, through the preparation before the survey, suggesting that business conditions hazardous waste; Then to the site visit to obtain the basic profiles of companies, products and related raw materials, information, resulting in the production of hazardous wastes and specific discharge process node, determine the amount of hazardous waste generation and type; Through data collection and final analysis, we get a large chemical industry produces hazardous waste factor.Concrete implementation of this task is through 4 with the combination method, in 77 years, the province produces more than 10 tons of hazardous waste in the chemical industry enterprises in the selected 16 samples to study. Through multiple-site field verification of the enterprise, cross-check data, the sample of 27 enterprises manufacturing process, 39 nodes, as well as the main raw material source of sewage and other major products have also been serious and detailed investigation and research. Then after the 16 sample enterprises hazardous waste generation data selection, production process contrast, production aspects of pollution, a total of 57 hazardous waste generation coefficient, Including organic solvent wastes, waste mineral oil, refined distillation residues, waste acid, waste alkali, heavy metals (mercury, zinc, nickel) waste of 13 categories, 32 types of dangerous waste factor. Final choice of a large amount of hazardous waste in our province, accounting for Registration of hazardous waste over 50% of the total hazardous waste generation factor of 9 for statistical analysis, Ultimately reached the following hazardous waste factor: DC diesel oil refining waste Alkali 11.3 kg / t product around, gasoline, liquefied petroleum gas desulfurization waste Alkali refined 2.1-6kg / t product, ethylene refining waste Alkali 51.3-55.6 kg / t product, Nitrogen tail oil 2-2.78kg / t products, lubricating oil waste clay 6.3-17.2kg / t product, wax waste clay 5.69-9.51kg / t product, ethylene glycol liquid 10.7-31.3kg / t product, clear waste oil tank 0.51-0.66 kg / t of crude oil, sewage treatment plant sludge from 1.4-1.73 kg / t waste water.Through this research, and make up for the domestic large-scale chemical industry, hazardous waste generation coefficient of the blank. Liaoning Province, launched in 2008 to declare the registration of hazardous waste provided technical support, Conducive to the production flow of waste hazardous waste management company, to prevent the illicit transfer and non-compliance emissions; Beneficial for a variety of different categories of the comprehensive utilization of waste and improve resource utilization to achieve circular economy. |
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