Study On The Environmental Quality Assessment And The Spatiotemporal Variation Characteristics Of Pollutants In H Chemical Enterprises

H chemical enterprise is a national large chemical enterprise in the key chemical industry park of the city.The quality of its environment is directly related to the life and health of the people in the area,social and economic development and whether the enterprise can have good economic benefits.By evaluating the environmental quality of water,air,soil and noise in H chemical enterprise and exploring the characteristics of their temporal and spatial changes,certain references are provided for the utilization and protection of environmental resources and the improvement of enterprise environmental quality.This article through the scene investigation and relevant data analysis.According to the production history and pollution characteristics of the enterprise,the pollution factors are collected,the concentration of various pollutants is analyzed and determined,and the excessive pollutants are screened as the characteristic pollutants of the enterprise for research.Use"surface water Environmental Quality Standards"(GB3838-2002),"Environmental Air Quality Standards"(GB3095-2012),"Technical Specifications for Soil Environmental Monitoring"(HJ/T166-2004),Acoustic Environmental quality Standards"(GB12348-2008)and other standards and definitions in the latest environmental quality indicators and technical guidelines,combined with the boxdiagram method in SPSSau software,Pearson correlation analysis in SPSS software,analytic hierarchy process,Matlab software evaluation model and other methods to analyze the main environmental indicators of enterprises in different time periods and different points in recent years(Water,air,soil,noise)and characteristic pollutants for environmental quality assessment and spatio-temporal change characteristics analysis,to compare the change law of pollutants at different time,different space and the correlation between characteristic pollutants and its strength.The environmental quality status of H chemical enterprise in recent years is understood based on the environmental quality grade obtained from the evaluation results.The results show that the variation of pollutant concentration has obvious spatiotemporal differentiation,and the water quality is in the national Grade Ⅱ standard.The correlation coefficient of gas characteristic pollutants is 0.3,which is medium strength correlation.The main source is not chemical enterprise H.The CR<0.1 and the weight value of conventional gas factors are obtained by using analytic hierarchy process(AHP)and Matlab modeling0.571 conforms to the national air quality Class Ⅱ standard;The comprehensive soil pollution index is between 0.7 and 1,belonging to the safety level,but the heavy metal arsenic and PH contents are slightly higher than other pollutants.If not timely adjusted,there may be a certain imbalance of soil p H in the future.The noise pollution scores in the plant are all within 0.75,which meets the noise standards of chemical enterprises.However,the noise in the day is obviously greater than that at night,which has a certain impact on the health of the working staff.This time,different environmental assessment methods and models were used for different pollution factors to conduct comprehensive evaluation and analysis for H chemical enterprise,and the overall environmental quality was acceptable.The water quality and atmosphere indexes are in a good state.The existing problems are analyzed and studied,and a set of measures and suggestions for the environmental quality of H chemical enterprise are given.In the later stage,emphasis should be placed on the change of heavy metal arsenic in soil and the balance of p H,as well as the control of noise caused by mechanical operation.The research results can not only provide intuitive and accurate real-time environmental conditions for chemical enterprise managers,but also provide reliable data support for related environmental investigations.On the other hand,it has a positive impact on improving the environmental quality of chemical enterprises and promoting them to bring greater economic benefits to the country and the region.