治污能力制约下的中小企业环境规制

我国的环境规制政策主要针对大企业设计,并同时运用于大企业和中小企业。中小企业受治污能力的制约无法适应现有环境规制政策。有效的中小企业环境规制政策不仅应提供足够的激励,还应帮助中小企业克服制约治污能力的各种因素。因此,有效的中小企业环境规制政策包括四类:一是经济补偿政策;二是支持性政策;三是增进监督能力的政策;四是消除政策扭曲。

Research on Regional Industrial Solid Waste Comprehensive Utilization Ability Influencing Factors based on Panel Data

On the basis of panel data from 29 provinces and cities throughout the country in 2006-2010, a research is made on factors influencing regional industrial solid waste comprehensive utilization ability through a regression analysis method. Research result shows that a positive influence will generate on the comprehensive utilization ability of the industrial solid waste by three factors： regional industrial soldi waste treatment earning level, regional industrial soldi waste treatment investment level and regional industrial pollution treatment subsidy strength. And this thesis will propose suggestions from improving earning ability, enhartcing treatment investment and increasing government subsidy depending on result of empirical analysis.

Treatment of Rural Effluents Using Fortified Sand-Clay： Interaction Bacteria-Clay for the Formation of Biofilm

The ability of some Tunisian sand-clays in rural wastewater treatment was investigated in this study. The sand-clays were characterized by studying the mineralogical and geochemical characteristics using X-ray diffractometer and atomic absorption spectrophotometer （AAS）, respectively. Performance efficiency studies were conducted to determine the best combination ratio of sand-clay/pebbles. Sand-clay fortified with pebbles in the ratio 3：1 gave the optimum water purification while combination ratio 1：3 gave the least. The fortified sand-clays were used in the treatment of wastewater from rural locality. On the other hand, bacteria play an important role in determining the properties and behavior of clay minerals in natural environments and such interactions have great potential for creating stable biofilms and carbon storage sites in soils, but our knowledge of these interactions are far from complete. The purpose of this study was to understand better the effects of bacteria-generated biofilms on clay interlayer expansion. Mixtures of a colloidal, 2-water smectite clay and Pseudomonas aereginosae in a minimal media suspension evolve into a polysaccharide-rich biofilm aggregate in time-series experiments lasting up to 1 week. X-ray diffraction analysis reveals that upon aggregation, the clay undergoes an initial interlayer contraction.

高度重视环境保护工作 增强云南可持续发展能力——云南省加强环境保护国债项目建设情况

抚仙源、洱海、泸沽湖、异龙湖、杞麓湖、星云湖、阳宗海、、滇池、程海等素称云南九大高原湖泊,流域面积占全省面积的2%,人口占10%,流域内国内生产总值占全省的1/3,是我省工业和城镇人口相对集中、农业资源较为密集、旅游业较为发达的地区.但多年来,湖泊流域生态受到破坏,环境污染、湖泊水质恶化等问题越来越严峻.

城市污水处理设施空间格局优化研究--以江苏省淮安市为例

城镇污水处理设施的建设和维护,对现代城市的可持续发展、确保水环境不受污染具有重要意义。以江苏省淮安市为例,以乡镇为评价单元,分析污染源的空间格局、变化趋势及其环境影响、污水处理设施需求,研究城镇污水处理能力与废污水排放的空间匹配格局。综合考虑废污水排放特征、污水处理厂的实际能力与设计能力,利用ArcGIS空间分析工具,将研究区划分为治污潜力释放类型区、治污增强类型区和维持现状类型区,对比分析废污水排放与治理能力缺口,提出污水处理设施建设与运营导向,为城镇污水处理厂建设选址与布局优化提供科学依据。