硫酸盐法制浆恶臭气体防治技术及其应用

介绍了硫酸盐法制浆恶臭气体的形成及其性质,重点介绍了骏泰浆纸公司年产40万t漂白化学木浆生产线采用世界上领先的清洁生产技术如何从源头控制恶臭气体的产生,以及对产生的恶臭气体进行收集、洗涤、碱炉燃烧、火炬燃烧、等离子体-微生物法处理,并介绍了等离子体-微生物法处理恶臭气体技术的原理和工艺。     

亲水表面在气田水恶臭治理中的应用

气田水因含有H2S等物质而具有恶臭气味,不仅污染环境,还可能对人员身心健康造成损害。目前成熟的恶臭处理技术投资高、维护复杂,不适合在气田推广应用。文章介绍了一种亲水表面研制方法。通过在气田水池应用亲水表面可显著降低恶臭程度,实现达标排放。由于该技术工艺简单、投入费用低且无需维护,在气田水恶臭治理中具有极大的推广价值。     

农村地埋式污水处理装置生化除臭的研究

本文结合广东省某农村地埋式污水处理站的实际情况,介绍了农村地埋式污水处理装置臭气的主要来源、恶臭组成成分,简要阐述处理恶臭气体的常见方法,重点介绍生物除臭技术的原理,并利用中试装置验证了生物除臭在农村地埋式污水处理装置上的可能行及优越性,望可以为业界人士在设计臭气控制工程时提供技术性参考。     

化学方法消除制浆造纸厂恶臭气体

介绍了制浆造纸厂恶臭气体来源,分析了恶臭气体组成成分,并阐述了消除恶臭气体的化学方法,以期为制浆造纸工业消除恶臭气体提供指导。     

赖氨酸恶臭废气热能回收及处理

介绍了公司专利赖氨酸恶臭废气热能回收及处理技术的原理和工艺流程。并介绍了某企业运用该技术取得的节能减排成果,该企业每年能节省近百万能源费用。该技术也适用于其他发酵废气处理和热能回收。     

植物提取液除臭剂在造纸废水处理厂的应用

该文分析了造纸废水厂臭气源及臭气影响度,介绍了植物提取液除臭剂的除臭机理及其在造纸废水处理厂中的实际应用。结果显示,植物提取液除臭剂能有效地降低造纸废水处理过程中的臭气排放浓度,能满足废水处理厂恶臭气体控制的要求,是一种很有前景的臭气处理方法。     

生活垃圾中转站恶臭末端治理工程实例分析

恶臭污染作为生活垃圾中转站的主要环境问题,具有成分复杂、影响范围广、持续时间长、健康风险大、较为敏感等特点,是周边居民关注的主要环境焦点。本文以上海某生活垃圾中转站恶臭末端治理工程为例,介绍“干式化学吸附+高效活性炭吸附”主体工艺对干垃圾恶臭及“干式化学吸附+高效沸石分子筛吸附+高效活性炭吸附”主体工艺对湿垃圾恶臭的末端治理效果。本工程运行结果表明:该工艺处理效果显著,处理后气体中的恶臭(异味)污染物排放浓度及排放速率均能完全满足《恶臭(异味)污染物排放标准》(DB 31/1025-2016)[1]中15m高排气筒排放限值要求;周界监控点臭气浓度及恶臭特征污染物浓度完全满足《恶臭(异味)污染物排放标准》(DB 31/1025-2016)[1]中非工业区周界监控点相应浓度限值要求。     

含乙硫醇恶臭废气的处理技术分析

文章在查阅国内外处理乙硫醇恶臭的基础上,分析了处理含乙醇恶臭废气的主要技术特点。希望通过文章的分析,能够为有关工作人员提供一定的参考与借鉴。     

基于新排放标准与云智能控制的除臭系统开发

随着城市的快速发展,污水处理厂和垃圾处理厂等恶臭产生设施的数量不断攀升,且恶臭成分呈现复杂化趋势。针对恶臭排放标准日趋严格和运维水平较低等问题,设计开发"低温等离子+预洗+生物滤池"联合处理工艺及智能控制系统,研究其关键技术参数和智能控制策略,构建云管理系统。经设备处理后,氨气和硫化氢等主要指标达到拟升级的排放标准,设备运行能耗节省15%以上,减少巡检的人力成本,为恶臭处理工程提供了设计参考。     

人工湿地在农村生活污水处理中的应用综述

根据调查,多地农村生活污水的有机负荷已最大程度超过了现有环境容量,使农村出现了自然溪流污染、池塘水质恶化、水沟污浊恶臭等一系列环境问题.本文运用文献法、调查法对人工湿地在农村生活污水处理中的应用进行了阐述,并分析了人工湿地技术处理现状,且重点探究了如何运用人工湿地缓解农村生活污水的污染问题,希望能为相关工作带来一些帮助...     

Inactivation of Vegetative Bacteria by Rapid Decompression Treatment

ABSTRACT: We investigated the inactivation and injury effects of hydrostatic pressure treatment combined with a slow decompression (SD treatment) and a rapid decompression (RD treatment) on several vegetative bacterial strains. Single decompression time for the SD and RD treatments was longer than 30 s and about 1 ms, respectively. The RD treatment gave significantly ( P < 0.05) smaller D and z values than the SD treatment, showing that the RD treatment was more effective than the SD treatment in inactivating vegetative bacteria and in lowering the treatment pressure. It was suggested that a rapid decompression procedure could enhance the degree of pressure-mediated injury, which caused the higher bactericidal effect of the RD treatment.     

Reducing dry period length to simplify feeding transition cows: milk production, energy balance, and metabolic profiles

Sixty-five Holstein cows were used to evaluate management schemes involving altered dry period (DP) lengths on subsequent milk production, energy balance (EB), and metabolic variables. Cows were assigned to one of 3 treatments: traditional 56-d DP (fed a low-energy diet from -56 to -29 d and a moderate energy diet from -28 d to parturition; T), 28-d DP (continuously fed a high energy diet; S), and no planned DP (continuously fed a high energy diet; N). Prepartum DM intake (DMI), measured from 56 d prepartum through parturition, was lower for cows on the T treatment than for cows on the S treatment and was higher for cows on the N treatment than for cows on the S treatment. There were no differences in prepartum plasma glucose, and beta-hydroxybutryric acid; there was a treatment by time interaction for prepartum plasma nonesterified fatty acid (NEFA). There was no difference in prepartum liver triglyceride (TG); postpartum liver TG was decreased for cows on the N treatment compared with cows on the S treatment, but was similar for cows on the T and S treatments. Postpartum NEFA was similar between cows on the T and S treatments, but was greater for cows on the S treatment than for cows on the N treatment. Postpartum glucose was greater for cows on the N treatment compared with cows on the S treatment and tended to be greater for cows on the S treatment than for cows on the T treatment. There was no difference in postpartum solids-corrected milk (SCM) production or DMI by cows on the T vs. S treatment. However, there was a tendency toward lower postpartum SCM production by cows on the N vs. S treatment and a tendency for greater postpartum DMI by cows on the N vs. S treatment. Postpartum EB was greater for cows on the S vs. T treatment and the N vs. S treatment. In general, T and S management schemes had similar effects on DMI, SCM, and metabolic variables in the first 70 d of the subsequent lactation. Eliminating the DP improved energy and metabolic status.     

烤烟密集烘烤过程中阶梯升温变黄生理生化特性研究

用电热式温湿度自控密集烤烟箱,研究了烤烟密集烘烤过程中阶梯升温变黄生理生化特性。结果表明,阶梯升温变黄处理的淀粉酶活性在变黄期和定色期出现了2次活性高峰,且淀粉酶活性高于对照;多酚氧化酶(PPO)活性在烘烤过程中表现为先降低再升高又降低趋势,且其酶活性比对照变化幅度小,相对较稳定;叶绿素和类胡萝卜素含量下降幅度大于对照,降解较彻底。阶梯升温变黄处理淀粉降解较快,整个烘烤过程中其淀粉含量均低于对照;总糖和还原糖含量积累也较多;总氮和烟碱含量烤后略有升高,与对照差异不大。总的来看,阶梯升温变黄处理的生理生化表现更有利于烤后烟叶品质的提高。     

造纸废水深度处理工程设计

在某钞票纸厂原有废水处理设备基础上引入一体化废水处理设备,对部分废水进行深度处理后回用,以减少废水排放量。同时对一体化废水处理设备进行了深入分析。运行结果表明,此工艺能够满足实际生产的需要,具有可行性。     

山羊绒纤维过氧乙酸氧化防缩处理

采用过氧乙酸对山羊绒进行正交氧化处理实验,分析过氧乙酸用量、时间、温度、助剂等因素处理后对纤维强力、毡缩球直径的影响程度.实验得到:对山羊绒纤维强力损伤的影响程度由大到小依次为:时间、温度、焦磷酸钠用量、过氧乙酸用量;对山羊绒纤维毡缩球直径的影响程度由大到小依次为:温度、过氧乙酸用量、焦磷酸钠用量、时间.     

Electrical treatment of apple cossettes for intensifying juice pressing

The impact of two types of electrical treatment, electro‐osmotic (EO) and moderate electric field pulses (MEFP), on intensifying juice pressing from apple cossettes has been studied. The experiments were carried out in a laboratory filter‐press cell fitted with the appropriate electrical treatment system. Both EO and MEFP treatments result in a significant intensification of juice yield. Energy consumption, however, is 50–100 times less for MEFP treatment. Since a significant appearance of electrolytic processes and ohmic heating is observed with EO treatment, this treatment is very limited. MEFP treatment does not have these drawbacks and reduces the juice coloration. © 2000 Society of Chemical Industry     

大蒜加工废水处理技术研究进展

大蒜加工废水是食品加工业非常特殊的高浓度废水,COD高达数万毫克每升,大蒜加工废水中含有的大蒜素具有强杀菌作用,采用普通的活性污泥曝气法处理,难以做到达标排放,使得大批的蒜片加工厂不断因环境污染问题而被关停。大蒜加工废水污染问题已经成为我国大蒜产业发展的瓶颈,也是环境保护急需解决的问题。因此本文通过概述大蒜废水的特性,分析了大蒜加工废水存在的问题,对传统物理处理、传统生物处理、酶处理、微电解处理、膜分离处理等技术在大蒜加工废水处理中的应用进行了比较,并对大蒜加工废水的处理技术进行了展望。     

造纸工业废水深度处理新方法

介绍了制浆造纸废水深度处理技术的研究现状以及主要污染物,讨论了几种方法的作用原理以及在制浆造纸废水深度处理中的应用和工程实例,提出了多种处理工艺,为制浆造纸工业废水深度处理技术提供参考。     

制盐石膏处理新工艺探索

本文主要介绍了制盐石膏处理新工艺的变革及在生产中的应用情况,该工艺开创了制盐母液处理的先河,将厢式压滤机成功地应用在工艺之中并将石膏处理工艺变得更为简单化,为制盐工业石膏母液的处理提供了发展方向。