垃圾焚烧炉渣填埋渗滤液成分分析——以深圳老虎坑垃圾卫生填埋场二期为例

文章通过对垃圾焚烧炉渣产生机理、化学及物理组成成分的分析,结合国外渗滤实验、淋溶实验等对渗滤液中无机、有机成分的检测结果,得出深圳老虎坑二期炉渣填埋渗滤液成分的分析结果。     

线路板污泥和电镀含铜废液同时处理回收铜的新工艺

作者开发出一套将线路板污泥和电镀含铜废液同时处理回收铜的新工艺,利用两种含铜废物自身的特性可以节约化工原料的添加,同时可以有效去除COD,以及实现铜和铁等杂质金属的有效分离,对铜的回收率达95%以上并制备出符合饲料级标准的五水硫酸铜,而且无三废排出。     

园林绿化废弃物在污泥好氧发酵上的应用

园林绿化废弃物是一种绿色废弃物,由于其组成及结构的特殊性,园林绿化废弃物是作为污泥好氧发酵的良好结构剂调理剂,有着一定的优缺点,能够很好地提高堆肥效率。同时经过二次发酵堆肥腐熟后的物料,其品质优良,是作为生产有机肥的良好原材料,能够更好地提高作物产量与品质。     

苏州市餐厨垃圾产量调查分析

对苏州市餐厨垃圾现状进行问卷调查,掌握了苏州市餐厨垃圾产量、收运以及处置现状,并对典型餐厨垃圾的理化性质进行分析。调查结果显示:苏州市餐厨垃圾年产量约为35万吨。餐饮业、高校及企事业单位食堂人均餐厨垃圾产生量分别为0.35 kg/(人·次)、0.13 kg/(人·次)、0.24 kg/(人·次)。     

关于危险废物安全填埋场运行若干问题的思考

文章简要介绍了福建省危险废物综合处置场安全填埋场的防渗系统设计,着重对安全填埋场运行过程中如何防止渗滤液导排堵塞、主防渗膜被破损进行分析,提出解决方案或建议,并对固化体养护、清污分流、气体导排等一系列问题进行探讨。     

创新型处理高污染废水的低温常压蒸发技术

农药废水对环境造成严重污染。农药废水处理旨在降低农药生产废水中污染物浓度,提高回收利用率,从而尽量达到无害化。创源环保(CWT)公司开发的低温常压蒸发工艺能在处理废水时实现大幅地低能耗运行和低维护成本,同时也提高了回收废水中有价值的物质的可能性。     

轮胎硫化余热的回收与利用

轮胎硫化过程中有部分高位蒸汽冷凝后直接排八大气,凝结水温度冷却过程中存在大量热量损失。余热回收系统是将硫化排放的余热回收,并将回收的热量充分利用,冬季用于车间（或办公室）供暖,夏季通过制冷机取低温水,为挤出线冷却装置提供低温水（或成型车间提供制冷空气）,从而达到节能降耗的目的。     

Effect of corona discharge plasma jet treatment on decontamination and sprouting of rapeseed (Brassica napus L.) seeds

Sprout-related outbreaks of foodborne illnesses are increasingly becoming a food safety concern. Different pathogenic microorganisms that originate from sprout seeds are known to play a crucial role in the pathogenesis of such outbreaks. Therefore, in order to decontaminate and also to enhance the germination of seeds, the applications of non-thermal plasma based techniques are increasingly being investigated in the field of agricultural science as an alternative to conventional pre-germination treatments. This work was aimed to evaluate the effectiveness of corona discharge plasma jet (CDPJ) for microbial decontamination of rapeseed seeds, and also studied the plasma treatment effect on the seed germination and physicochemical properties of sprouts (grown from the plasma-treated seeds). Aerobic bacteria, molds and yeast, Bacillus cereus, Escherichia coli, Salmonella spp. were detected as contaminants in the seeds. All the detected microorganisms were reduced in the range of 1.2–2.2 log CFU/g upon the CDPJ treatment for 3 min. The inactivation patterns are better explained using pseudo-first-order kinetics. The plasma treatment of seeds up to 2 min showed positive effects on their germination rate and seedling growth. Physicochemical and sensory characteristics of rape sprouts were unaffected due to the CDPJ treatment of their respective seeds. Therefore, the CDPJ treatment of rapeseed seeds has not only reduced the seed microbial load, but also contributed to the enhancement of their germination rate and seedling growth, without adversely affecting the physicochemical and sensory characteristics of their corresponding sprouts.     

Microwave-specific heating of crystalline species in nuclear waste glass

The microwave heating of a crystal-free and a partially trevorite-crystallized nuclear waste glass simulant was evaluated. Our results show that a 500-mg monolith of partially crystallized waste glass can be heated from room temperature to above 1600°C within 2 minutes using a single-mode, highly focused, 2.45-GHz microwave, operating at 300 W. Using X-ray diffraction measurements, we show that trevorite is no longer detectable after irradiation and thermal quenching. When a crystal-free analog of the same waste glass simulant composition was exposed to the same microwave radiation, it could not be heated above 450°C regardless of the heating time. The reduction in crystalline content achieved by selectively heating spinels in the presence of glass suggests that microwave-specific heating should be further explored as a technique for remediating crystal accumulation in a glass melt.     

油基钻屑电磁加热脱附可行性及参数优化

油基钻屑含有大量的矿物油、乳化剂等化学药剂,成分复杂、处理困难,是页岩气等非常规油气开发的环保难题。为此,设计了一套油基钻屑电磁加热脱附处理设备,并进行了现场小试试验。通过检测电磁加热设备热脱附处理后的钻屑残渣含油率,分析试验过程中的温度变化规律,对设备处理油基钻屑的可行性进行了初步验证,并在此基础上优化了设备的主要运行参数:温度、负荷、时间。结果表明:1该电磁加热脱附处理设备对于油基钻屑具有良好的处理效果,处理后残渣含油率低于1%;2该设备适用范围广,可同时处理钻井过程中产生的编织袋、防渗塑料布等其他含油废物;3处理固控系统振动筛出渣(物料A)的最佳条件为温度375℃、进料负荷15 L/h、时间45 min;4处理固控系统离心机出渣(物料B)的最佳条件为温度350℃、进料负荷20 L/h、时间50 min;5电磁加热脱附炉内部温度的波动不受设定温度的影响,对不同负荷的物料也均能保证内部温度的稳定,具有稳定的控制温度能力和良好的保温效果。