活性炭催化过二硫酸盐降解水中AO7

过二硫酸盐（persulfate,PS）活化技术是基于硫酸根自由基（SO 4^-.）的一种新型高级氧化技术.用颗粒状活性炭（GAC）常温常压下直接非均相催化PS来降解水中难生化偶氮染料AO7（acid orange 7）.结果表明,GAC/PS体系对AO7不但能够快速脱色,而且有较高的矿化率.n（PS）∶n（AO7）为...     

A dynamic conceptualization of power for sustainability research

This paper takes up the challenge of providing a conceptual power framework to be used in the context of sustainability research. First, challenges of sustainability research are discussed by focusing specifically on recent insights from Integrated Sustainability Assessment (ISA), and on that basis some requirements for concepts to be used in sustainability research are postulated. It is argued that two of the most important aspects of sustainability assessment research are the long-term dynamics of change and an interdisciplinary paradigm. Second, a dynamic power framework is presented that was developed in the context of research on socio-technical sustainability transitions, including the basics of this power framework as well as some empirical illustrations. Third, it is discussed how the presented power framework deals with time, change and long-term dynamics, and how this contributes to the state-of-the-art. Fourth, it is indicated how the power framework integrates interdisciplinary and ‘interparadigmaticatic’ research requirements, and how this contributes to the state-of-the art. In conclusion, the arguments are summarized and some challenges for future research are distilled.     

紧凑式污水处理系统处理回用校园生活污水

介绍了紧凑式污水处理系统（Bever反应器）在处理回用校园生活污水中的应用,并介绍了Bever反应器的构造。系统运行结果表明：在进水ρ（COD）、ρ（BOD5）、ρ（SS）和ρ（NH3-N）分别为400,300,200,80 mg/L的条件下,该系统对COD、BOD5、SS和NH3-N的去除率均大于93%,系统运行稳定...     

典型行业中水回用技术及水质评价标准浅析

在水资源日益短缺的今天,中水回用作为开源节流的有效途径,将成为今后的发展趋势。文章介绍了电子、汽车制造、啤酒等几个典型行业中水回用技术,并对回用水质的评价标准如何制定作出探讨。     

印制电路板蚀刻废液利用企业环保准入条件研究

介绍了当前印制电路板蚀刻废液资源化利用的主要方法及处理过程存在的环境问题。以江苏省为例,对含铜废蚀刻液处置利用企业的管理进行了初步探讨,并提出了该行业的环保准入条件,为政府及相关部门制定政策提供了依据。     

More is not always better: coping with ambiguity in natural resources management

Coping with ambiguities in natural resources management has become unavoidable. Ambiguity is a distinct type of uncertainty that results from the simultaneous presence of multiple valid, and sometimes conflicting, ways of framing a problem. As such, it reflects discrepancies in meanings and interpretations. Under the presence of ambiguity it is not clear what problem is to be solved, who should be involved in the decision processes or what is an appropriate course of action. Despite the extensive literature about methodologies and tools to deal with uncertainty, not much has been said about how to handle ambiguities. In this paper, we discuss the notions of framing and ambiguity, and we identify five broad strategies to handle it: rational problem solving, persuasion, dialogical learning, negotiation and opposition. We compare these approaches in terms of their assumptions, mechanisms and outcomes and illustrate each approach with a number of concrete methods.     

Autonomous real-time adaptive management of soil salinity using a receding horizon control algorithm: a pilot-scale demonstration

Soil salinization is a potentially negative side effect of irrigation with reclaimed water. While optimization schemes have been applied to soil salinity control, these have typically failed to take advantage of real-time sensor feedback. This study incorporates current soil observation technologies into the optimal feedback-control scheme known as Receding Horizon Control (RHC) to enable successful autonomous control of soil salinization. RHC uses real-time sensor measurements, physically-based state prediction models, and optimization algorithms to drive field conditions to a desired environmental state by manipulating application rate or irrigation duration/frequency. A simulation model including the Richards equation coupled to energy and solute transport equations is employed as a state estimator. Vertical multi-sensor arrays installed in the soil provide initial conditions and continuous feedback to the control scheme. An optimization algorithm determines the optimal irrigation rate or frequency subject to imposed constraints protective of soil salinization. A small-scale field test demonstrates that the RHC scheme is capable of autonomously maintaining specified salt levels at a prescribed soil depth. This finding suggests that, given an adequately structured and trained simulation model, sensor networks, and optimization algorithms can be integrated using RHC to autonomously achieve water reuse and agricultural objectives while managing soil salinization.     

Emergy-based fuzzy optimization approach for water reuse in an eco-industrial park

The establishment of an eco-industrial park (EIP) provides opportunity for individual plants to cooperate with each other in order to utilize resources efficiently and thus reduce waste. The goal of an EIP is to “close the loop” through recycling and reuse of material and energy streams. Studies show with current freshwater consumption trends there would be water stress aggravated by global warming in the near future. This paper presents a model to design an EIP water reuse network that considers overall system sustainability as measured with emergy, as well as cost saving desired by individual plants. Case studies from literature are then solved to illustrate the advantage of this method in decision making. The illustrative examples show how the model achieves a compromise among the potentially conflicting fuzzy goals of the various EIP stakeholders.     

低压天然气回收再利用与节能环保

凝析油气藏在开采后期,由于地层压力自然递减加快,开采难度加大,而后期的工业及民用天然气需求量不断增加,导致凝析气藏产气量逐年缩减与天然用量逐步增多的矛盾日益明显。为缓解这一矛盾,考虑将不能输送的放空低压气进行技术增压,达到输送压力后,进入输送管道,从而增加天然气输送量,减少天然气放空对环境的污染。     

废旧锂电池的回收与再利用研究

目前废旧电池污染对人类健康及环境造成的危害越来越受到人们的关注.结合目前国内废旧锂电池回收概况及区域废旧锂电池回收的实地调研情况,了解废旧锂电池的回收再利用现状及人们对废旧锂电池的认识,分析锂电池的再利用价值.同时,结合电池品种羔异的特性,设计出针对性强、可行性高的废弃锂池回收体系;通过分析锂电池工作的基本工作原理、使用特性及电池材料组成成分,提出一些延长锂电池使用寿命、增加使用周期的方法.