环境空气质量指数（AQI）的EXCEL实现研究

空气质量指数以数值的形式表述空气质量状况、便于公众简明、清楚地了解空气质量的优劣程度,及时、准确地向公众提供易于理解的当地空气质量状况。基于EXCEL软件计算环境空气质量指数（AQI）的方法具有普及意义,有助于AQI算法在基础应用层面的实现,也有助于验证数据库开发中使用算法的准确性。本文结合苏州市环境空气监测数据,详细介绍如何在EXCEL中实现AQI的计算,供相关从业人员参考。     

贵阳市某垃圾填埋场的土壤地质环境评价

对贵阳市某垃圾填埋场周边土壤中主要成分进行分析,采用单因子污染指数、综合污染指数和内梅罗指数法进行评价。结果表明该垃圾填埋场沿地下水流向上土壤存在一定的污染,土壤中的污染因子主要为COD Mn、NO2-、SO42-、Mn、F-、Hg。随着距离的增加,污染程度呈现衰弱的趋势。     

Water quality evaluation of Haihe River with fuzzy similarity measure methods

Fuzzy similarity measures, which are used to judge the closeness of two fuzzy sets, are presented to evaluate the water quality of the Haihe River. Based on the membership functions and coefficient of variation as the weights, four fuzzy similarity measures （including Lattice similarity measure, Hamming similarity measure, Euclidean similarity measure and the max-min similarity measure） are used to classify the 299 samples into the proper water quality standard ranks. The results are compared with the traditional distance discriminant methods. The calculation of two traditional distance discriminant methods （both Euclidean distance and absolute value distance） is also based on the use of coefficients of variation as the weights. Without the Lattice similarity measure, for this method loses some information, the correct assignment of samples classified into the same water quality ranks is 75.92% with the other three similarity measures and two distance discriminant methods. This result shows the reliability of the five methods. Only considering the three similarity measures, there were only 1.01% of the samples that did not classify to the same ranks, while the corresponding ratio of the two distance discriminant methods was 5.69%. The results of leave-one-out cross validation show that more than 88% of the samples are classified to the proper ranks, which demonstrates that the similarity measures are suitable to evaluate the water quality of the Haihe River.     

Microalgae cultivation using an aquaculture wastewater as growth medium for biomass and biofuel production

Microalgae as a main feedstock has attracted much attention in recent years but is still not economically feasible due to high algal culture cost. The objective of this study was to develop a comprehensive eco-friendly technology for cultivating microalgae Platymonas subcordiformis using aquaculture wastewater as growth medium for biomass and biofuel production. Platymonas subcordiformis was grown in pretreated flounder aquaculture wastewaters taken from different stages. Each of wastewater contained different levels of nutrients. The biomass yield of microalgae and associated nitrogen and phosphorous removal were investigated. The results showed that algal cell density increased 8.9 times than the initial level. Platymonas subcordiformis removed nitrogen and phosphorus from wastewater with an average removal efficiency of 87%-95% for nitrogen and 98%-99% for phosphorus. It was feasible to couple the removal of nitrogen and phosphorus from wastewater to algal biomass and biofuel production. However, further studies are required to make this technologies economically viable for algae biofuel production.     

区域发展战略环境影响跟踪评价初步研究

本文依据区域发展战略环境影响跟踪评价内涵,结合我国实践需要,阐明区域发展战略环境影响跟踪评价技术路线和内容,并进一步提出相关政策建议。研究指出,开展区域发展战略环境影响跟踪评价应坚持基于生态环境需求优先的技术路线、提高跟踪评价的战略性和开展战略环境影响跟踪评价试点。     

柴达木盆地资源开发的环境影响与对策研究

柴达木盆地干旱少雨,风大沙多,水资源短缺,生态环境脆弱。水资源是资源开发和生态环境保护需要协调和优化的关键因素。柴达木盆地的资源开发以柴达木循环经济试验区为核心,重点构建以盐湖资源综合开发利用为核心的循环经济产业链体系。柴达木盆地盐湖资源、金属和非金属矿产资源、石油天然气资源开发以及主要工业布局将对水资源利用、盐湖水盐平衡、重点湖泊湿地保护、绿洲安全和水环境产生较大影响或带来累积性生态环境风险。针对柴达木盆地资源开发可能带来的环境影响和生态风险,提出了区域资源开发和产业发展布局的优化调控对策和促进经济社会可持续发展的环境保护对策和建议     

攀钢六号烧结烟气脱硫树脂脱盐工艺参数优化研究

针对攀钢六号烧结烟气脱硫树脂脱盐工艺中存在的脱氯效率低、脱硫剂夹带损耗严重的现状,在现场开展了树脂脱盐工艺参数的优化研究工作。通过对树脂脱盐各步骤工艺参数的优化改进,有效地提高了树脂脱盐的脱氯效率及降低了脱硫剂损耗,为脱硫系统的高效、稳定运行奠定了基础。     

某炼油厂焦化制氢车间职业病危害识别及控制措施

针对某炼厂实际工艺流程,分析了炼化企业焦化、制氢工段生产过程中可能存在的职业病危害因素.根据对现场检测结果的分析,提出了炼化企业职业病危害因素控制技术措施.     

Who avoids being involved in personal carbon trading? An investigation based on the urban residents in eastern China

Environmental Science and Pollution Research - Personal carbon trading scheme has been pulled into the public eye with the increasing urgency of downstream carbon emission reduction, and its...     

Development of global soil erosion research at the watershed scale: a bibliometric analysis of the past decade

Environmental Science and Pollution Research - At the watershed scale, soil erosion is a cascading system that includes detachment–transport–deposition processes while sediment yield is...