层次分析法在功能区噪声监测点位优选中的应用

运用层次分析法对功能区噪声进行优选,各功能区噪声监测点位个数分配根据功能区面积和复杂性、各功能区噪声监测点位确定根据专家比例标度赋值进行评定。     

基于GIS的辽宁省环境监测信息管理系统建设

结合辽宁省环境监测信息管理系统的建设,利用先进的网络、通信、信息技术,以GIS技术为工具整合各类环境信息资源。该系统以数据库提供数据支持,对属性数据和空间数据进行信息管理,并对所得数据进行统计、分析与评价。     

全国环境系统河流代码标准编制规则初探

以我国环境管理和工作的实际需要为目的,通过探索国内外现存的河流编码系统,提出了适应环境管理需要的以线分类法为主、面分类法为补充,线、面结合的层次编码法。并针对我国河流流域广、跨行政区多、水环境之间层级关系复杂的实际情况,综合考虑了编码与水环境的自然属性、环境要素、管理属性、行政属性之间的关系,确定了代码的组成和编制规则。     

一起有机硅工厂燃爆事故的应急监测案例分析

本文介绍了绍兴市袍江工业区"2.20"浙江恒业成有机硅有限公司燃爆事故的应急监测,在监测过程中确立了气、水等环境介质作为监测对象,确定含硅有机物和氯化氢作为主要监测因子,并根据实际情况合理地选择了监测方法,以为事故的应急处理提供借鉴。     

基于Monte-Carlo法的瑶寨隧道岩体结构性质评价

本文以瑶寨隧道为研究对象,结合现场地质分析与结构面统计,以Monte-Carlo法为基础,对该隧道各测线不同等级围岩分别进行结构面网络模拟,评价遂道岩体的结构性质,并进行工程岩体分类,估算其力学参数,以为采取合适的围岩支护方式提供依据。     

电化学法测定化学需氧量的研究及应用动态

总结了近年来的电化学法测定化学需氧量的研究进展及在线自动监测领域的应用现状。介绍了电化学法快速、准确和低耗、无二次污染的特点,指出了电化学法是实现化学需氧量快速检测和在线自动监测的发展方向之一,具有广阔的应用前景和深入研究的价值。     

地市级环保数据网络的安全现状与对策

从地市级环保数据网络的安全现状展开调查,分析网络各个应用可能存在的安全漏洞和安全风险,并分析其解决方法,研究结果将对中国地市级进行环境信息系统的安全运行具有借鉴作用。     

Pollutants removal and simulation model of combined membrane process for wastewater treatment and reuse in submarine cabin for long voyage

A laboratory scale test was conducted in a combined membrane process (CMP) with a capacity of 2.91 m3/d for 240 d to treat the mixed wastewater of humidity condensate, hygiene wastewater and urine in submarine cabin during prolonged voyage. Removal performance of chemical oxygen demand (COD), ammonia nitrogen (NH4 +-N), turbidity and anionic surfactants (LAS) was investigated under di erent conditions. It was observed that the e uent COD, NH4 +-N, turbidity and LAS flocculated in ranges of 0.19–0.85 mg/L, 0.03–0.18 mg/L, 0.0–0.15 NTU and 0.0–0.05 mg/L, respectively in spite of considerable fluctuation in corresponding influent of 2120–5350 mg/L, 79.5–129.3 mg/L, 110–181.1NTU and 4.9–5.4 mg/L. The e uent quality of the CMP could meet the requirements of mechanical water and hygiene water according to the class I water quality standards in China (GB3838-2002). The removal rates of COD, NH4 +-N, turbidity and LAS removed in the MBR were more than 90%, which indicated that biodegradation is indispensable and plays a major role in the wastewater treatment and reuse. A model, built on the back propagation neural network (BPNN) theory, was developed for the simulation of CMP and produced high reliability. The average error of COD and NH4 +-N was 5.14% and 6.20%, respectively, and the root mean squared error of turbidity and LAS was 2.76% and 1.41%, respectively. The results indicated that the model well fitted the laboratory data, and was able to simulate the removal of COD, NH4 +-N, turbidity and LAS. It also suggested that the model proposed could reflect and manage the operation of CMP for the treatment of the mixed wastewaters in submarine.     

环境检测机构的仪器设备管理

仪器设备管理工作是非常重要的基础性工作,只有实施从购置、验收、量值溯源、使用、维护、修理、报废等具体、规范、有效的管理,才能确保环境检测机构检测结果的准确可靠。     

浅议住宅小区水景的生态设计

结合大量文献描述,分析了水景现状、景观现状、水景功能以及存在的问题,讨论了水景设计的技巧和原则。