共查询到19条相似文献，搜索用时 156 毫秒
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随着城市建设发展,企业逐渐被社区包围,虽然大部分企业在污水处理过程中产生的恶臭污染物已经配套建设治理设施,但恶臭气体仍会受风向、风速影响,在下风向对居民区等敏感点产生影响。饮料生产属食品制造业,其在生产过程中产生的污水浓度高、水量大,在污水处理过程中产生的臭气对周边环境的影响较大。通过对日照某饮料公司在污水处理过程中恶臭污染物的产生区域及治理工艺进行分析,查找了存在的问题并对治理工艺升级改造,对污水处理站中产生恶臭污染物的区域进行全密封,将原有的恶臭污染物治理工艺由“UV光氧+碱喷淋”工艺改为二级“碱喷淋”处理。结果表明：在不改变污水处理工艺的情况下,可以显著改善恶臭污染物排放浓度,实现稳定达标排放,从而减轻对周边环境的影响,并提高污水处理效率,降低了吨水处理成本,提高了污水处理经济效益。通过以上措施,还可以提高工作人员的职业卫生条件,同时也降低了设施的漏电、爆炸及生产区域窒息、中毒等安全隐患风险。 相似文献
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以垃圾渗滤液中的重金属为研究对象,分析了A2/O工艺处理垃圾渗滤液过程中重金属(Pb、Ni、Cu、Zn、Cr)的变化以及去除情况。结果表明:A2/O工艺对渗滤液中的重金属去除率较高,但由于处理过程易受运行条件的影响,各重金属的去除率并不相同。由于渗滤液中重金属主要以溶解态形式存在,因此当渗滤液经过调节池的调节作用后,通过重力沉降或吸附沉降作用得到去除重金属含量较少。从生化处理结果来看,重金属经过生化处理后得到了很好的去除,去除率顺序基本与总去除率顺序保持一致。 相似文献
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以某垃圾卫生填埋场渗滤液处理工程污泥为例,介绍了渗滤液的产生过程、处理工艺,分析了渗滤液中污染物可能的迁移路径.在此基础上,对渗滤液处理工程污泥的危险特性进行了鉴别.结果表明:污泥在腐蚀性、急性毒性、反应性、易燃性、浸出毒性及毒性物质含量方面均不具有对应的危险特性,渗滤液处理工程污泥不属于危险废物.探讨了同类项目可能存... 相似文献
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Composite paper containing waste tea leaves was prepared to investigate the effective utilization of waste tea leaves as deodorant
material. Paper containing waste green tea leaves did not have increased deodorizing ability compared with controls either
against acidic odors such as hydrogen sulfide and acetic acid gases or against neutral odors such as formaldehyde and acetaldehyde
gases. In contrast, the paper had excellent deodorizing ability against basic odors such as ammonia and trimethylamine gases.
It was observed during additional tests conducted on paper samples containing 60 wt% waste leaves of oolong tea, black tea,
pu-erh tea, or hojicha, that all the samples reduced the ammonia concentration to below 1 ppm, which is the threshold concentration for olfactory
recognition, within 30 min. Further, paper containing waste green tea leaves was found to decrease the odor residual rate
to 5.1% in 30 min even for a waste tea leaf content of 10 wt%. The excellent deodorizing ability of the paper could be attributed
to the chemical reactions between odorous substances and the catechins found in tea leaves. After the deodorization of ammonia,
paper containing waste green tea leaves was found to have increased antibacterial activity against Staphylococcus aureus. 相似文献
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云龙水库水源保护区景观生态安全格局构建 总被引：1，自引：0，他引：1
水源保护区景观生态安全格局对维护和控制其生态过程有着关键作用,对水源保护区的社会、生态、经济持续、健康发展具有重要意义.文章介绍区域生态安全格局的理论和方法,通过对昆明市云龙水库水源保护区生态环境问题的分析,以景观格局优化理论为指导,根据当地的自然生态特征条件,构建了由2个核心区、3个生态源、5个关键点、9个斑块、11个生态廊道和众多生态楔组成的“两核三源五点九斑十一廊”的景观生态安全空间格局,旨在维持水源保护区景观生态多样性和异质性,实现水源保护区区域可持续发展. 相似文献
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Recent reports clearly indicate that odor emitted from concentrated livestock production facilities in the Midwest of the US is a significant social problem that negatively impacts rural and state economies, human health, and the quality of rural life. A potential incremental approach to dealing with livestock odor is the use of shelterbelts arranged in strategic designs near and within livestock facilities. This review outlines the various ways that shelterbelts can be effective technology which bio-physically mitigates odor thereby reducing social conflict from odor nuisance. The biophysical potential of shelterbelts to mitigate livestock odor arises from the tree/shrub impacts on the central characteristics and physical behavior of livestock odor. As the majority of odors generated in animal facilities that are detectable at appreciable distances travel as particulates, there is compelling evidence that shelterbelts can ameliorate livestock odor by impeding the movement of these particulates. Because the odor source is near the ground and the tendency of livestock odor is to travel along the ground, shelterbelts of modest heights (i.e. 20–30 ft) may be ideal for odor interception, disruption, and dilution. Shelterbelts can be adapted to fit almost any production situation. Depending on shelterbelt health, these trees can provide long term, year round odor interception, with increasing effectiveness over time. Additionally, more is becoming known about how landscape aesthetics affect how people might perceive livestock odor, suggesting that landscape elements such as shelterbelts can lead to aesthetic improvements and perhaps more positive opinions of livestock odor and the farm systems that create them. 相似文献
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针对垃圾渗滤液水质特点，研发了一套新型组合工艺，经过罗定市垃圾填埋场晚期渗滤液的中试处理试验，并对工艺进行改良和优化，结果表明：垃圾渗滤液能够得到很好的处理，各项出水指标基本达到规定的标准，在实际工程中发挥良好的作用。 相似文献