Coordination Mechanism of the Legal Protection of Resource Security with Its Relative Laws

The basis of the legal protection of resource security is its relative laws, which have four main characteristics, which are foundational, divergent, comprehensive and of long-term social benefits in view. The coordination mechanism of the legal protection of resource security with its relative laws meets the needs of the sustainable development of the economy, society and environment. It also facilitates and is facilitated by the modern transformation of the legal system in China, and upholds the legal system as a logically self-perfecting entity. Furthermore, this coordination bears scientific feasibility.     

水敏性城市设计应用研究——以佛山市高明区荷城乡镇生态规划为例

21世纪是知识经济和全球经济一体化的世纪,经济活动和生态环境的相互影响日益加深,全球性人口增长、资源短缺、环境污染和生态恶化已成为人类面临的共同难题.水敏性城市设计的出现,为各国谋求经济社会与人口、资源、环协调发展提供了思路.水敏性城市设计的核心是可持续发展,是城市设计与城市水循环的管理、保护和保存的结合,确保城市水循环管理能够尊重自然水循环和生态过程.通过介绍国内外水敏性城市设计理念与实例,结合佛山市高明区荷城乡镇生态规划方案,把污水管道,雨水管道和道路设计,景观设计相融合,将节水技术与废水资源化融入到城市生态乡镇规划中,实现对水资源的完全利用和循环利用.     

反硝化细菌对硫酸盐还原菌的竞争抑制研究

以从大庆油田采出水中筛选到的硫酸盐还原菌SRB-2和反硝化细菌DNB-1为目的菌,考察两者之间的竞争抑制关系,以及添加营养物质的种类和浓度对SRB2数量及产H2S活性的影响。结果表明,当体系中硝酸盐浓度为0.5 g/L或亚硝酸盐浓度为0.1~0.5 g/L 时,DNB-1就能够有效降低SRB-2活性,抑制H₂S的产生,抑制时间10 d以上,H₂S产生可以减少85%以上;当体系中硝酸盐浓度为0.1~0.25 g/L时,在10 d内DNB-1对SRB-2活性和产H2S活性也有较好的抑制效果,H₂S产生减少65%左右;亚硝酸盐对SRB-2生长的抑制作用好于硝酸盐。     

Fe/C微电解耦合H2O2氧化处理页岩气钻井废水

采用Fe/C微电解耦合H2O2工艺对经复合混凝处理后的某页岩气井钻井废水进行处理,考察了Fe/C质量比、Fe/C投加量、溶液pH值、气水比、H2O2（30%）投加量和反应时间对COD去除率的影响。结果表明,耦合工艺最佳实验条件为Fe/C质量比1：1、Fe/C投加量500 g·L-1、溶液pH值2.5、气水比20：1、H2O2（30%）投加量6 mL·L-1、反应时间120 min。最佳工艺条件下,页岩气钻井废水经处理后,出水COD质量浓度为89.54 mg·L-1,去除率达到81.60%。     

Fe/Cu/C微电解深度处理钻井废水

以某油井钻井废水经高效混凝+吸附过滤处理后的出水为研究对象,采用Fe/Cu/C微电解对钻井废水进行深度处理研究。结果表明,Fe/Cu/C微电解的最佳工艺条件为：Fe/Cu/C质量比为7：3：10,Fe/Cu/C投加量为1 000 g/L,pH为3.0,气水比为54：1,反应时间为180 min;Fe/Cu/C微电解对钻井废水深度处理的效能十分显著,在最佳工艺条件下,废水COD质量浓度由428.63 mg/L降至98.32 mg/L,COD去除率达到77.06%。     

Knowledge mapping of planetary boundaries based on bibliometrics analysis

Environmental Science and Pollution Research - The planetary boundaries concept has triggered a vast amount of pure and applied scientific research, as well as policy and governance activities...