我国城市垃圾分类收集处理现状综述.docVIP

我国城市垃圾分类收集处理现状综述 混合收集 在我国，城乡生活垃圾逐年增加，生活垃圾处理越来越困难，加上人民群众对生态环境质量的要求日益提高，我国很多大城市的生活垃圾处理设施建设都面临着无地可选的困境，对生活垃圾的分类处理需求也将日益增加。 我国大多数城市的垃圾收集方式都是混合收集，由于这种收集方式简单易行，对垃圾收集设施及作业方式要求都比较低，收集费用也比较小，这也是目前世界各国应用最广泛、历史最悠久的收集方式。但是这种垃圾收集方式降低了生活垃圾中可用物质的纯度和其再利用的价值，同时增加了垃圾分拣、处理和处置的难度，提高垃圾处理的总费用，不能满足垃圾处理的“资源化、减量化、无害化”原则，甚至会发生化学反应，增加垃圾的毒性和危害性，加剧环境污染问题。 另一方面，生活垃圾混合收集处理液是造成我国生活垃圾焚烧能源耗资巨大、运营成本居高不下的一个重要原因。我国厨余垃圾占生活垃圾的比例在50%以上，生活垃圾由于含水率高，常会造成焚烧时燃烧热值不够，不仅降低焚烧炉的功效，而且添加煤、油的等辅助燃料的同时，造成能源巨大浪费，推高了焚烧处理的运营成本。 垃圾分类 从分类收集的概念来看，可以分为“狭义”和“广义”两种。“狭义”的分类收集指的是从源头居民家庭、企事业单位等开始，按照垃圾的不同成分和性质进行分类投放的过程;“广义”的分类收集指从to a customer request for objective, comprehensive investigation, analysis, evaluation, focusing on factors that could affect credit assets, effective identification of risks. Eighth investigators should be based on the Banks credit policy screening, filter in line with the Banks credit scope of customer, credit business, shall not entertain our prohibition of involvement of clients and credit business. Nineth survey about customer surveys and data verification should be based on field surveys, and indirect surveys as a supplement. If necessary, by external credit Bureau to verify the authenticity of customer information. Article tenth credit pre-loan investigation should be completed by the person himself, may not authorize a third party, except where otherwise provided for by the system of the Bank. Branch Manager may hint, instruction, order signature of investigations in cases that are not involved in the investigation, pre-loan investigation a mere formality. 11th pre-loan investigation should be two participants, one person, another person aided person, except on business with special provisions. Main and auxiliary officers shall be due diligence, investigators as a sponsor of the credit business, bear primary responsibility for credit, is the responsibility of credit business. Risk managers participate in the pre-loan investigation work in parallel, as a double investigation, risk managers held a