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1.
随着垃圾分类的政策的实行,餐厨垃圾成为我国亟待解决的一大生态环境难题,随着餐厨垃圾的产生,必然也会产生大量的餐厨垃圾废水。餐厨垃圾废水具有水质复杂、水质波动性大、有机污染物及营养物质含量高,且不同地区餐厨废水水质含量区别较大等特点。为能有效处理餐厨垃圾废水,本文采用了UASB-A/O-MBR的组合工艺,探究了UASB工艺对餐厨垃圾废水中COD的去除效果及工艺参数,进而考察UASB-A/O-MBR整体工艺对COD、NH3-N、TN的去除效果及工艺参数。研究表明,当UASB反应器中pH控制在6.5~7.3之间、上流速度控制在0.58 m/h~0.65 m/h之间、温度控制在35℃±3℃、HRT为24h, A/O-MBR工艺中HRT为48h,回流比为300%时,此套系统对COD、NH3-N、TN的去除效果最低可达到95%、97%、75%。可以为以后在处理餐厨垃圾废水的实际工程应用中提供一种优良技术。  相似文献   

2.
餐厨垃圾废水是一种成分复杂、高有机污染、高氨氮,高油污染高但可生化性好的废水,随着全国垃圾分类不断推进,对餐厨垃圾处理过程中所产生的废水处理将对污水处理带来新的机遇和挑战,从废水处理工艺效果出发,重点介绍了适用于餐厨垃圾处理过程中所产废水的物理法、化学法、物理化学法、土地处理法、生物处理法及多种方法的联合工艺以及各工艺的优缺点等。  相似文献   

3.
随着经济的快速发展,餐厨垃圾的产生量日益增大,如何有效处理餐厨垃圾已成为一个亟待解决的问题。与传统的餐厨垃圾处理方式相比,餐厨垃圾与其它生活垃圾的协同厌氧发酵技术是一种较为理想的处理技术,可以实现餐厨垃圾的稳定化、无害化、资源化处置。针对餐厨垃圾的协同厌氧发酵技术进行文献的归纳和分析,重点介绍了餐厨垃圾等基质的协同厌氧发酵产气的现状、影响因素及产气预测方法,并展望了餐厨垃圾协同厌氧发酵技术的研究方向与应用。  相似文献   

4.
餐厨垃圾有机质含量大,具有较高的回收价值,资源化利用是发展的趋势,但是我国餐厨垃圾具有含水量大、杂物多、油脂提取难等特点,增加了处理的难度。研发一套餐厨垃圾预处理工艺,并对相关设备的结构尺寸进行了优化,形成了以精分选、高提油为特点的工艺技术,综合杂物拣出率达到95%以上,提油率达到98%以上。该工艺在光大国际宿迁100t/d和吴江300t/d餐厨项目进行了应用,运行效果良好,为后期餐厨项目的推广提供了技术支撑。  相似文献   

5.
随着我国经济的发展和城市化进程的加快,城市生活垃圾的排放量愈来愈大,其中餐厨废弃物所占比例日渐上升,占到城市生活垃圾的37%~62%。“地沟油”、“垃圾猪”等由餐厨废弃物引发的各类食品安全问题备受社会关注。餐厨废弃物具有高油脂、高蛋白,营养丰富,易腐烂变质的特点,收集运输成本高,处理难度大。餐厨废弃物中还含有大量人畜共患传染病的病原微生物,不但容易引起动物感染沙门氏菌、  相似文献   

6.
重庆市餐厨垃圾现状调查及处理对策研究   总被引:5,自引:0,他引:5  
唐敏  刘娇娇  唐燕秋  雷波 《四川环境》2010,29(1):136-139
本文采用问卷调查的方式,对重庆主城区的312家餐厨垃圾产生单位进行了抽样调查,了解餐厨垃圾的产生情况、排放去向、收运和处理现状,剖析了目前重庆市餐厨垃圾处置和管理中存在公众认知程度不够、相关法律法规不健全、收集处置不规范、市场机制尚未建立等主要问题,并提出了相关对策建议。  相似文献   

7.
成都市餐厨垃圾产量分析预测及监管体系建设研究   总被引:1,自引:0,他引:1  
整理汇总了成都市中心城区及郊县餐厨垃圾产生和收运现状,对其产量作出预测;在此基础上提出适合成都市自身情况的餐厨垃圾监管体系构建设想。  相似文献   

8.
上海市食品废弃物处理处置现状综述   总被引:1,自引:0,他引:1  
赵有亮 《四川环境》2010,29(2):128-133
对上海市生活垃圾中食品废弃物和餐厨垃圾近年来的产生状况进行了综述,讨论了上海市对生活垃圾中食品废弃物和餐厨垃圾的管理和处理处置现状,并分别进行了总结。最后对上海市食品废弃物的资源化利用进行了展望。  相似文献   

9.
本文介绍了餐厨垃圾的概念及乌鲁木齐餐厨垃圾的主要来源,对目前国内外餐厨垃圾资源化处理技术进行了探讨,介绍了饲料化技术、肥料化处理技术、生物厌氧发酵处理技术以及生物柴油技术,分析了各种技术存在的优缺点,并对国内外处理处置现状进行综述,对乌鲁木齐市餐厨垃圾处理工作进行了展望和探讨.  相似文献   

10.
二次指数平滑法的成都市餐厨垃圾产量预测   总被引:4,自引:0,他引:4  
孟勤宪  黄涛 《四川环境》2010,29(4):29-30,53
餐厨垃圾的产生量直接影响其处理规模,指数平滑法是对于缺乏基础数据的模型预测的一种有效方法。本文以2001~2009年成都市餐厨垃圾产量数据为基础,运用二次指数平滑预测法对成都市餐厨垃圾产量进行预测,预测结果显示2010年成都市餐厨垃圾产量将达到514.96 t/d。  相似文献   

11.
Kitchen wastes containing high amounts of carbohydrates have potential as low-cost substrates for fermentable sugar production. In this study, enzymatic saccharification of kitchen waste was carried out. Response surface methodology (RSM) was applied to optimize the enzymatic saccharification conditions of kitchen waste. This paper presents analysis of RSM in a predictive model of the combined effects of independent variables (pH, temperature, glucoamylase activity, kitchen waste loading, and hydrolysis time) as the most significant parameters for fermentable sugar production and degree of saccharification. A 100 mL of kitchen waste was hydrolyzed in 250 mL of shake flasks. Quadratic RSM predicted maximum fermentable sugar production of 62.79 g/L and degree of saccharification (59.90%) at the following optimal conditions: pH 5, temperature 60°C, glucoamylase activity of 85 U/mL, and utilized 60 g/L of kitchen waste as a substrate at 10 h hydrolysis time. The verification experiments successfully produced 62.71 ± 0.7 g/L of fermentable sugar with 54.93 ± 0.4% degree of saccharification within 10 h of incubation, indicating that the developed model was successfully used to predict fermentable sugar production at more than 90% accuracy. The sugars produced after hydrolysis of kitchen waste were mainly attributed to monosaccharide: glucose (80%) and fructose (20%). The fermentable sugars obtained were subsequently used as carbon source for bioethanol production by locally isolated yeasts: Saccharomyces cerevisiae, Candida parasilosis, and Lanchancea fermentati. The yeasts were successfully consumed as sugars hydrolysate, and produced the highest ethanol yield ranging from 0.45 to 0.5 g/g and productivity between 0.44 g L–1 h–1 and 0.47 g L–1 h–1 after 24-h incubation, which was equivalent to 82.06–98.19% of conversion based on theoretical yield.  相似文献   

12.
《中国环保产业》2012,(7):21-25
综述了我国工业固体废物处理利用行业2011年发展概况;介绍了目前国内大宗固体废物资源化技术、危险废物处理技术、餐厨垃圾处理技术、废油资源化技术的进展情况;提出要以循环经济理念治理固体废物污染,并分析探讨了城市层面发展循环经济的共性技术;就行业的发展提出了建议。  相似文献   

13.
四川省危险废物管理现状分析及评价   总被引:1,自引:0,他引:1  
随着城市化进程的加快,危险废物的产生量快速增加,数量多、分布广、危害大、潜在利用价值高,管理处理难度大,因此带来了巨大的环境安全隐患。本文利用相关调查统计数据,分析了四川省危险废物产生特性及污染特性,指出危险废物管理过程中出现的问题已成为阻碍四川省循环经济发展及生态省建设的壁垒,针对出现的问题,提出了相关对策和建议。  相似文献   

14.
Sustainable development and eco-efficiency are urgent and imperative demands for the well-being of our planet, continued growth of a society, and human development. Traditional Portland cement production seems unsustainable due to consumption of huge natural resources and energy and significant CO2 emissions. The volume of industrial wastes is increasing significantly, leading to a number of economical and ecological problems. Although industrial wastes can be incorporated in cementitious materials by various traditional methods, the substitution ratio of industrial wastes in cementitious materials is relatively low to avoid unacceptable performance loss. Novel methods, such as improving hydraulic activities of metallurgical slags by adding composition adjusting material at high temperature, improving surface cementitious properties of fly ashes by dehydration and rehydration treatment, and arranging cement clinker and industrial wastes in the particle size distribution of blended cements according to their hydraulic activities, are reviewed. These methods provide more effective approach to prepare high performance blended cements with larger amount of industrial wastes, leading to a very significant role in CO2 emissions reducing, resources and energy conservation of the cement industry.  相似文献   

15.
The anaerobic digestion of industrial wastes produces a biogas that is an alternative to the use of fossil fuels for energy production. At the end of this process, the stabilized biomass presents high levels of nutrients, which can be used both as biofertilizers in agriculture and for the biodegradation of contaminants in the soil through improvement of the microbiota. Thus, this study aimed to evaluate biogas production by industrial wastes and to use the biofertilizer for the bioremediation of soils previously contaminated with gasoline. The biomass (420 mL) generated approximately 10 liters (L) of methane and 3 L of other gases. Anaerobic incubation reduced total and volatile solids, as well as biochemical oxygen demand, chemical oxygen demand, and the carbon and nitrogen contents of the biomass. The bioremediation experiment showed that 15 days after contamination with gasoline, the addition of the biofertilizer improved the degradation efficiency of monoaromatic hydrocarbons; however, the degradation of polyaromatic hydrocarbons was less time efficient. So, we conclude that the anaerobic incubation of industrial wastes generates a high amount of biogas, and that biofertilizer deposition into contaminated soil does not affect the efficiency of the degradation of aromatic hydrocarbons after 30 days. Novelty or significance : Anaerobic incubation of industrial wastes generates a high calorific value gas, which can be used as an alternative source of energy. And, the resulting biomass, called biofertilizer, can be used to remediate soils contaminated with hydrocarbons.  相似文献   

16.
ABSTRACT: The water-flushed sewage system represented an advance in human sanitation when adopted in the nineteenth century but is coming under increasing criticism because it wastes water of drinking quality and sewage treatment plants do not completely clean the effluent. A number of on-site waste disposal systems are now available or under development which may eliminate the need for sewers and central treatment plants: aerobic, biological, composting, incinerating, oil-flushed, and vacuum or pressure systems. Official agencies should test them to determine if one or more can replace central sewer systems. As part of the program, the kitchen garbage grinder should be phased out.  相似文献   

17.
针对采油作业产生的废酸、固废、废水处理成本高、技术不成熟等问题,研发改性废酸降压增注、深部调剖技术;高比重污泥悬浮研磨后的固废处理技术;低耗水打塞、原井液+CaCl2压井、原井液处理再利用技术,减少了"三废"的产生,解决了"三废"环保处理费高等问题,消除了环保隐患,实现了清洁生产,环境效益显著。  相似文献   

18.
我国工业固体废物处理利用行业2013年发展综述   总被引:1,自引:0,他引:1  
《中国环保产业》2014,(12):10-16
综述了我国工业固体废物处理利用行业2013年的发展环境形势和发展概况;介绍了2013年国内工业固体、危险废物及生活垃圾的产生量和处理情况;阐述并分析了目前国内固体废物处理技术和设施的现状;就行业发展存在的主要问题提出了建议.  相似文献   

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