厨房油烟污染净化技术应用探讨

分析了厨房油烟污染物来源、组成及危害,介绍了运用物理法、化学法、生物法、矿物法及复合法净化油烟污染物的应用情况,提出复合净化是油烟净化的发展方向。     

Bacillus thuringiensis field applications: Effect of nozzle type,drop size,and application timing on efficacy against gypsy moth

Abstract

In a series of recent studies, we evaluated the influence of delivery systems, drop size and application timing on the efficacy of aerially applied Bacillus thuringiensis against gypsy moth infestations. Use of different nozzle systems including Micronair, Flat Fan or Twin Jet, did not appear to result in significant differences in Bt coverage efficiency, foliage protection or population reduction. Nor was there any significant difference in population reduction when Bt was applied at two different drop sizes with volume median diameters of 110 and 163 μm. The efficacy of different formulations on larval populations were similar when used against the younger 1st and 2nd instar but differed when treatment was delayed until the population matured to the 3rd and 4th instar stages.     

我国污染场地土壤修复技术的工程应用与商业模式分析

基于我国土壤污染形势及污染场地的特点,介绍了几种典型的污染场地土壤修复技术在国内的工程应用现状,包括工程技术适用范围、系统构成、主要工程装备、工程案例、参考成本等。并结合当前我国土壤修复行业的特点,系统分析了现阶段国内污染场地土壤修复行业的商业模式及其未来的发展方向。     

Effect of day time climatic conditions associated with different 2,4-D formulations on spray deposition and weed control

Abstract

The aim of this study was to evaluate the effect of time of the day and their associated climatic conditions on spray deposition of two 2,4-D formulations, as well as the influence on weed control. The experiment was installed in the field in complete randomized design. Treatments were arranged in factorial design 8?×?2, with 20 repetitions. First factor corresponded to different application time (1:00, 4:00, 7:00, 10:00, 13:00, 16:00, 19:00, and 22:00) with their respective climatic conditions. The second factor consisted of two formulations of 2,4-D applied at 776?g a.e. ha^?1 (2,4-D amine and 2,4-D choline salt with Colex-D? Technology) + glyphosate (816?g a.e. ha^?1). There was more spray deposition when 2,4-D choline formulation was used, and such differences were more evident for applications performed under adverse climatic conditions. More spray deposition was found in applications performed at times of day with more favorable temperature and humidity of the air conditions. Only the initial control of the evaluated species was affected by the time of application.     

反渗透与超滤及其在水处理中的应用

反渗透与超滤是水处理中广泛应用的膜分离技术,给水处理中反渗透应用较多,废水处理中超滤应用较广泛。     

对我国大气污染物总量控制与排放标准的再认识

以我国现行的《大气污染防治法》为依据,通过理论分析,从总量控制与排放标准的控制目的、法律依据、制定部门、适用条件、适用对象、实施部门、法律责任等方面研究了二者的区别及联系,提出了在实际工作中的应用原则建议。     

新型复合滤料过滤性能的实验研究及其应用

针对袋式除尘器滤料运行阻力过高问题 ,介绍了一种新型结构的复合滤料 (HBT)。对其过滤性能进行实验研究 ,结果表明在相同工况下 ,该滤料具有“高效低阻”特性 ,并在实际工程应用中取得了较好的效果。     

复合配方絮凝剂处理炼油厂含油废水的研究

LKM型絮凝剂具有破乳能力强、水溶性好、使用方便和储存稳定的特点 ,其复合制剂的除油效果更好。现场工业试验证明 :在除油率大致相同的情况下 ,其投加量为聚合氯化铝的 1 2至 1 5,浮渣生成量少 ,易于处置和利用 ,可作为聚合氯化铝的换代产品在含油废水处理中使用。     

微生物在环境污染治理中的应用

本文介绍了近年来微生物在气体污染、水污染的处理等方面的应用。     

小型油水分离器的设计及试验

简要介绍了CYF－0．1／CYF－0．05型油水分离器的基本原理、主要参数、设计计算及台架试验情况。