我国生活垃圾分类发展历程、障碍及对策

推广生活垃圾分类收集与资源化利用有助于促进资源节约型、环境友好型社会建设.本文综述了我国生活垃圾分类发展历程;收集了国家和地方在推广生活垃圾分类过程中所做的工作;提炼出了生活垃圾分类过程中还存在的障碍和瓶颈;并给出了相应的对策.本文分析表明,我国生活垃圾分类经历了开始（20世纪90年代）、试点探索（2000~2015年）和快速发展（2016年至今）3个阶段.目前国家和地方正逐步采用可操作性强的垃圾分类方法、融合互联网+的宣传方式、实用性的法规章程、完善的分类收集-分类运输-分类处理循环链来推进生活垃圾分类,甚至生活垃圾分类工作还逐步向市场化方向发展.我国将走出一条切实可行、可复制、可推广的高效生活垃圾分类模式.后期加强全民参与及大众自觉回收的责任意识、出台更细化具体、操作性强的实施方案、重视学校儿童的垃圾分类教育、充分利用国内拾荒人员,对快速推进我国生活垃圾分类进程具有重要意义.     

循环块状经济发展的思考--以诸暨市山下湖镇珍珠块状经济为例

诸暨市山下湖镇通过建设循环经济工业园，合理规划剖蚌点，充分利用废弃的蚌壳和蚌肉，及时回收利用废料、废水、废液等措施，使珍珠循环块状经济得到迅速发展。发展循环经济是企业对环境、社会发展的责任和义务，要加快研究制定循环经济发展的规划和思路，努力将循环经济的发展理念贯穿在块状经济发展之中，培育新的产业形态，形成新的增长潜力。     

对城市生活垃圾填埋处置技术的思考

本文分析了我国广泛使用的垃圾填埋技术——厌氧卫生填埋的缺点，介绍了当前新型的填埋技术——生物反应器填埋技术、好氧填埋技术、准好氧填埋技术、循环式准好氧填埋的原理、结构及各自的优缺点，据此指出我国今后垃圾填埋技术的研究方向。     

废旧电池资源化技术的研究分析

废旧干电池的回收利用技术主要有湿法和火法两种冶金处理方法.而与湿法回收相比,火法回收更为理想.火法能有效地处理并回收电池中的汞,且回收效率高.作为实现环境与经济协调发展的重要途径,循环经济的根本之源就是保护日益稀缺的资源,因此,结合我国国情在宣传、立法、回收利用的技术工业化研究等方面提出了一些使废干电池能够尽快资源化可行性建议.     

Municipal Solid Waste Management in the Accra Metropolitan Area, Ghana

Municipal solid waste management in Accra, Ghana, is at present delivered in an unsustainable manner. Due to uncontrolled urbanisation, large quantities of waste are generated daily in Accra, and this exerts much pressure on an over strained solid waste management system. Coupled with weak institutional capacity, and lack of resources, both human and capital, the city authorities face difficulties in ensuring that all the waste generated in the city is collected for disposal. Home collection of waste is limited to high and, some middle income areas while the poor are left to contend with the problem on their own. This leads to indiscriminate disposal of waste in surface drains, canals and streams, creating unsanitary, and unsightly environments in many parts of the city.     

苏里格气田压裂返排液的处理及循环利用技术

针对苏里格气田压裂返排液的特点,形成一套以"微生物降解—化学氧化"、"屏蔽-沉淀"、"混凝-沉降"、"交联抑制"为特色的返排液处理技术,处理后水质清澈透明、无异味,满足重复配液需求。开发了一套模块化多功能处理装置,可满足不同的返排液处理需求,灵活方便、可靠性强、效率高,处理能力最高达300m~3/d。该技术已在苏里格区域全面推广应用,取得了良好的社会经济效益。     

建设生态工业园区 推进环保产业发展——在南海国家生态工业示范园区暨华南环保科技产业园建设规划论证会上的讲话

论述了建设生态工业园区是实现区域可持续发展、经济和环境双赢的重要举措。     

Selective flotation separation of plastics by chemical conditioning with methyl cellulose

The floatability of seven plastics (POM, PVC, PET, PMMA, PC, PS and ABS) in the presence of methyl cellulose (MC) and separation of plastics mixtures were investigated in this paper. It was found that the seven plastics can be separated into three groups by using the wetting agent MC. Group one includes POM and PVC. They are depressed at very low MC concentrations. Group two, including PET, PMMA and PC, has an intermediate floatability. Group three (ABS and PS) has a high floatability. They are almost not depressed within the given MC concentration range. In order to understand the mechanism of selective flotation of plastics and the chemical conditioning process, surface chemical factors, such as wettability of plastics and surface tension of flotation medium, and gravity factors, such as particle density and shape, were studied. It was found that the depressing effect of MC on plastics is ascribed mainly to its adsorption on the plastics surfaces. The MC molecules absorbed on plastics expose some of their polar groups oriented towards the aqueous phase, hence making the plastics surfaces hydrophilic. In addition, flotation selectivity for the plastics is dominated not only by wettability of plastics, but also by particle size, density and shape.     

城市垃圾填埋场渗滤液循环回喷-人工湿地处理分析

对垃圾渗滤液处理工艺的现状及各特点进行了比较分析。结合云南部分地区实际，提出了场内循环回喷处理→简单物化处理→人工湿地处理的渗渡液处理方案。     

黑龙江省发展循环经济的条件分析

循环经济是指遵循生态规律,按照减量化、再利用、资源化的原则,采取经济、技术和管理等措施,实现资源高效利用和减少废物排放的活动,是符合可持续发展理念的经济发展模式.文章从黑龙江省实际情况出发,从黑龙江省的基础条件和循环经济发展潜力两个方面分析了发展循环经济的有利条件;从认识、机制、政策、技术等五方面分析了发展循环经济的制约因素;从而为黑龙江省发展循环经济提出行之有效的措施,充分地发挥黑龙江省的资源优势,做到可持续发展.