共查询到20条相似文献,搜索用时 31 毫秒
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Janda Anna Marcinkowski Tadeusz 《Environmental science and pollution research international》2022,29(7):9722-9733
Environmental Science and Pollution Research - Cemetery waste (CW) constitutes one of the streams of municipal waste (MW). Based on the available data, it can be said that it accounts for about 1%... 相似文献
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收集了生活垃圾焚烧厂关停SNCR时燃料的N排放数据以及与之对应的工况和燃料特性数据,并分析各影响因素对燃料N转化过程中不同环节的影响机理.结果表明,在工业化生产中,燃料N转化率与炉温、垃圾含水率之间不存在显著联系,而随N元素含量和固定碳含量的增加而降低,随过剩空气系数、H/N、O/N的增加而升高.据此提出了符合实际生产条件的燃料N转化路径图.该路径图表明,燃料特性对燃料N转化率和NOx生成浓度起到了决定性作用,并进一步量化了H/N和固定碳含量这2个参数与燃料N转化率之间的关系.提出通过将厨余垃圾从生活垃圾分出的方法来减少NOx生成,并以国内典型城市为例,研究了分出不同比例厨余垃圾的情况下,燃料N转化率和NOx生成浓度的变化趋势.本研究表明通过分出厨余垃圾的方法,能够降低垃圾焚烧厂的脱硝成本及氨逃逸风险,可为进一步控制生活垃圾焚烧过程中的NOx排放提供参考. 相似文献
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餐厨垃圾和绿化废弃物混合堆肥的试用 总被引:1,自引:0,他引:1
以餐厨垃圾和绿化废弃物堆肥作为种植基质,研究了其不同堆肥比例对黑麦草(Lolium perenne L.)生长的影响。结果表明,将不同基质组分别施用后,黑麦草各项生长指标(植株高度、盖度、地上和地下生物量(干重))均良好,其中2#基质(80%土壤+20%堆肥)施用效果优于1#(90%土壤+10%堆肥)和3#(70%土壤+30%堆肥)基质。对比不同堆肥对黑麦草生长的影响发现,(80%+20%)堆肥6处理的黑麦草地上和地下生物量最大,分别约为40 g和28 g,第三茬草地上生物量(干重)与对照组相比增幅为164.3%,盖度达到了98%。本研究确定了堆肥和土壤的最佳配比以及最佳堆肥类型,不但可以解决其资源化再利用的问题,而且植物生长良好,表明该技术在城市绿化中具有一定的应用前景。 相似文献
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《国际环境与污染杂志》2011,7(2):169-204
Custom and practice have exerted a powerful influence on waste management in the UK. A notable feature is the role of local government, which remains dominant despite expanding legislation and the increasing technical complexity of waste management. The private sector has long had a major role in the transporting and disposal of hazardous waste. The Environmental Protection Act of 1990 represented a major revision of UK environmental legislation. A significant advance in the handling of hazardous wastes was the imposition of a new principle of 'Duty of Care' on all concerned parties. 相似文献
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餐厨垃圾和绿化废弃物换向通风好氧堆肥 总被引:2,自引:0,他引:2
以某高校餐厨垃圾和绿化废弃物为原料,利用一种换向通风的堆肥降解装置对其进行好氧堆肥处理,研究了2个进气温度(35℃、45℃)和3个通风速率(1.5、2.5和4 m3/h)6个处理组对堆肥原料理化性质(堆体温度、含水率、pH值、有机质含量、C/N、种子发芽指数)的影响。餐厨垃圾和绿化废弃物进行15 d好氧堆肥后,pH值上升到7左右,有机质含量达到20%~80%,C/N都降到20以下,种子发芽指数均大于50%。经过1个月腐熟,其含水率≤30%。上述指标符合有机肥料标准(NY525-2011)的要求,该堆肥产物可用于园林绿地,具有显著的经济效益和生态效益。本研究结果表明,将城市餐厨垃圾和绿化废弃物混合后进行好氧堆肥是废弃物处理的高效工程,具有良好的发展前景。 相似文献
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Biomethanation of tobacco waste 总被引:11,自引:0,他引:11
Meher KK Panchwagh AM Rangrass S Gollakota KG 《Environmental pollution (Barking, Essex : 1987)》1995,90(2):199-202
Tobacco is an important cash crop produced in considerable quantities in India. During cigarette manufacturing large quantities of tobacco waste are produced annually and its disposal is a serious ecological problem. In the present study a process for the biodegradation of tobacco waste, under methanogenic conditions, was developed so that environmental pollution can be reduced while producing biogas as a useful energy source. The methanogenic bacterial consortium developed for the anaerobic degradation of tobacco waste without any chemical pretreatment in a single stage digester at 15 days HRT (hydraulic retention time) has been successfully scaled-up to install a 10 m(3) biogas plant. The gas yields (1 kg(-1 TS fed) day(-1)) varied from 169 to 282 depending on the ambient temperatures. The methane content in the biogas produced was 60%. The pH and VFA content of the digested slurry were 6.8 +/- 0.1 and 599 mg litre(-1), respectively. Nicotine, COD and BOD reductions were 75, 60 and 80%, respectively. 相似文献
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The production and emission of chlorinated aromatics from a hazardous waste incinerator were shown to be influenced by the operating conditions. 相似文献
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废弃油基钻井液中废柴油再生工艺产生的废渣废液具有高COD和高色度等特点,直接外排对环境危害严重。通过单因素实验和正交实验确定了该废弃物的最佳固化配方为:水泥∶粉煤灰为3∶2,水泥和粉煤灰加量30%,石膏加量1.5%,硫酸铝加量1.5%,石灰加量1%。在最佳固化配方下,废弃物浸出液的COD由10 062 mg/L降至62 mg/L,色度由500倍降至8倍,各主要污染指标都符合《污水综合排放标准》(GB 8978-1996)一级标准,固化成本约120元/m3。通过固化体的宏观照片和微观SEM照片对固化机理进行了分析,结果表明,废弃物被稳固地包裹在固化体之中。 相似文献
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R F Unz 《Journal - Water Pollution Control Federation》1974,46(6):1372-1383
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Wang Xin Ren Bozhi Zhou Yingying Shi Xiyang 《Environmental science and pollution research international》2022,29(4):5541-5551
Environmental Science and Pollution Research - Manganese released from the piled manganese ore wastes is a great threat to the local ecosystem and human health. The mechanism and dynamic... 相似文献
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Synthetic fuel for imitation of municipal solid waste in experimental studies of waste incineration 总被引:2,自引:0,他引:2
Synthetic fuel is prepared to imitate municipal solid waste (MSW) in experimental studies of incineration processes. The fuel is composed based on the Environmental Protection Agency reports on the materials contained in MSW. Uniform synthetic fuel pellets are prepared using available and inexpensive components including newsprint, hardwood mulch, low density polyethylene, iron, animal feed, sand, and water to imitate paperbound, wood, yard trimming, plastic, metal, food wastes, and other materials in MSW. The synthetic fuel preparation procedure enables one to reproduce and modify the fuel for a wide range of experiments in which the mechanisms of waste incineration are addressed. The fuel is characterized using standard ASTM tests and it is shown that its parameters, such as combustion enthalpy, density, as well as moisture, ash and fixed carbon contents are adequate for the representation of municipal solid waste. In addition, chlorine, nitrogen, and sulfur contents of the fuel are shown to be similar to those of MSW. Experiments are conducted in which the synthetic fuel is used for operation of a pilot-scale incinerator research facility. Steady-state temperature operation regimes are achieved and reproduced in these experiments. Thermodynamic equilibrium flame conditions are computed using an isentropic one-dimensional equilibrium code for a wide range of fuel/air ratios. The molecular species used to represent the fuel composition included cellulose, water, iron, polyethylene, methanamine, and silica. The predicted concentrations of carbon monoxide, nitric oxides, and oxygen in the combustion products are compared with the respective experimental concentrations in the pilot-scale incinerator exhaust. 相似文献