建筑陶瓷行业SO2污染物评价及总量控制实用方法

采用高斯点源模型对建陶生产造成的SO2地面浓度增量进行计算.利用比例下降模型计算建陶业的SO2允许排放总量,并根据企业的设备生产能力进行了总量分配,在方法上具有较强的可操作性,计算结果表明,可有效降低所在地区的SO2地面浓度.     

浙江省环境保护及相关产业现状分析及发展思路

通过对浙江省环境保护及相关产业现状的调查,基本摸清了当前全省环境保护产品、资源综合利用、环境保护服务和洁净产业等4个方面的发展情况,并从规模、地域、产业结构和效益等方面对其当前发展中存在的问题进行了全面分析,找出其发展过程中存在的问题.结合当前浙江"生态省"建设的现状,提出了浙江省环保相关产业发展的对策和思路,为决策和管理部门提供环境保护及相关产业健康快速发展的科学参考.     

骆马湖水体氮污染特征分析

2005年通过对骆马湖水质监测，并结合近几年的监测资料进行了分析，结果表明，氮是骆马湖水体的主要污染物，包括总氮、氨氮和硝酸盐氮，其主要特征是入湖河流、降水、围网养殖和点源带来的污染。     

强化一级处理与SBR工艺处理油脂精炼加工废水

介绍了规模为200 m^3/d的油脂精炼加工废水处理工程的设计与运行.先经强化一级处理工艺预处理,再经SBR工艺处理,出水的有关指标能达到设计的排放标准,工艺运行稳定.     

微波加热对活性炭表面基团及其对SO2吸附性能的影响

采用了微波加热技术,通过在不同微波功率和辐射时间条件下对不同粒径活性炭进行改性,研究了改性前后活性炭的表面化学基团、元素组成的变化,以及对SO2吸附性能的影响.结果表明,经过微波改性后活性炭的SO2吸附性能大为提高,微波功率是影响改性活性炭脱硫性能的主要因素.活性炭经微波热处理后,酸性基团发生分解,表面含氧量减少,碱性特征增强,是吸附性能增加的主要原因之一.     

氧化镁脱硫结垢研究

对氧化镁脱硫法中的结垢问题进行了系统的研究 ,通过对比实验 ,分析了结垢的机理、氧化镁法在防止结垢方面所具有的优势及其原因 ,提出了实际中判断结垢倾向的方法和避免结垢的合理建议。     

MnO2负载树脂的制备及对As（V）的去除效果

制备了大孔和DH302 2种MnO2的负载树脂。并用SEM、EDS手段表征了负载树脂，实验了负载MnO2后树脂对As（V）的去除效果。结果表明：负载树脂对As（V）的去除效果比原树脂有很大提高；吸附As（V）后的2种负载树脂，均能较好地解吸并可重新用于对As（V）的吸附实验。     

制浆废液降低普钙水分的应用研究

针对我国采用高临界流动水分的磷矿进行湿法生产普钙普遍存在产品水分达不到部颁标准的难题,直接采用制浆废液(利用其主要对环境有害成分之一--MNA作减水剂)进行降低普钙水分的研究和应用.实验结果表明,添加少量的减水剂MNA可显著降低国内朝阳、昆阳、浏阳和国外摩洛哥等单种磷矿以及昆阳-朝阳混矿的矿浆粘度和水分.采用国产昆阳-朝阳混矿进行工业生产试验结果表明,添加0.35%～0.4%干矿粉重量的减水剂MNA,不仅可使球磨添加水量从145 kg降至103 kg,矿浆含水量从30.5%降至27%,成品肥含水量从16.24%降至13.77%,而且可使有效磷从10.67%升至12.24%,转化率由86.57%提高到90.45%,矿浆细度由90.18%提高到93.12%.实验和工业生产试验表明,直接用造纸制浆废液降低普钙水分,既确保和改善了普钙的产品质量,又治理了环境污染,取得了较好的经济、环境和社会效益.     

Evaluation of photolysis and hydrolysis of pyraclostrobin in aqueous solutions and its degradation products in paddy water

This study evaluated the hydrolysis and photolysis kinetics of pyraclostrobin in an aqueous solution using ultra-high-performance liquid chromatography–photodiode array detection and identified the resulting metabolites of pyraclostrobin by hydrolysis and photolysis in paddy water using high-resolution mass spectrometry coupled with liquid chromatography. The effect of solution pH, metal ions and surfactants on the hydrolysis of pyraclostrobin was explored. The hydrolysis half-lives of pyraclostrobin were 23.1–115.5?days and were stable in buffer solution at pH 5.0. The degradation rate of pyraclostrobin in an aqueous solution under sunlight was slower than that under UV photolysis reaction. The half-lives of pyraclostrobin in a buffer solution at pH 5.0, 7.0, 9.0 and in paddy water were less than 12?h under the two light irradiation types. The metabolites of the two processes were identified and compared to further understand the mechanisms underlying hydrolysis and photolysis of pyraclostrobin in natural water. The extracted ions obtained from paddy water were automatically annotated by Compound Discoverer software with manual confirmation of their fragments. Two metabolites were detected and identified in the pyraclostrobin hydrolysis, whereas three metabolites were detected and identified in the photolysis in paddy water.     

The associations of air pollution exposure during pregnancy with fetal growth and anthropometric measurements at birth: a systematic review and meta-analysis

Environmental Science and Pollution Research - Fetal growth has been demonstrated to be an important predictor of perinatal and postnatal health. Although the effects of maternal exposure to air...