Odour quantification by a sensor array: An application to landfill gas odours from two different municipal waste treatment works

The possibility of quantifying the landfill gas (LFG) odour in terms of odour-units per cubic meter (ou/m³) using a tin oxide sensor array is investigated. The objective is to determine the most appropriate neural machines (MLP networks, RBF networks) model to perform the odour concentration approximation and evaluate the influence of multiple biogas sources modelling on the approximation quality. The structural risk minimization principle is used instead of the usual empirical risk minimization principle in the training algorithm of the neural machines. Multilayer perceptrons (MLP) networks prove to minimize best the error on the prediction of odour concentration of unknown data. The data is constituted of LFG odour samples from two municipal waste treatment works presenting different concentrations of odorous compounds. It is shown that the quality of the LFG odour approximation is in the present case influenced directly by the size of the training data set. The use of data coming from two different sources is not detrimental to the quality of the approximation.  

KingSCADA和工业实时数据库软件在垃圾渗滤液工程上的应用

本文介绍亚控KingSCADA软件和工业库KingHistorian搭建的系统实现了对垃圾渗滤液处理项目的工艺展示、数据实时监视、设备控制等功能，达到很好的应用效果。  

垃圾填埋场土工膜破裂渗漏电压差分矢量测试法

提出一种垃圾填埋场土工膜渗漏快速检测方法,包括测试小车上配套的测试探极、信号处理电路、数据采集系统、GPS定位装置、计算机数据分析与模型建立系统;测试探极通过导线和高压(1 000v)信号源正极,高压(1 000v)信号源的负极直接连接高压电极,在垃圾场内形成高压直流电场,采用电压场多维矢量分析.该方法无需对垃圾填埋场大规模翻土或大量铺设检测电极,且不同于平面电压场分析法,可对渗漏点快速定向定位搜索,从而提高检测效率、降低劳动强度.  

便携式填埋场HDPE膜漏洞定位装置的设计

针对填埋场防渗层(HDPE膜)存在的渗漏现象,根据偶板子检测原理,开发了便携式漏洞定位装置.详细介绍了该检测装置的硬件组成和软件实现,经系统测试和实际运行表明,该系统安装使用方便、工作可靠性较高,达到了设计要求,具有一定的参考和推广价值.  

基于力控SCADA软件平台的垃圾渗液处理实时监控系统

本文主要介绍了以力控的SCADA软件eForcecon和实时历史数据库pSpace为系统软件平台并结合垃圾处理填埋过程中渗液处理的工艺要求，实现了垃圾渗液处理的实时监控、处理设备的远程部署管理以及环保数据与环境管理部门的无缝集成。  

Comparative analysis on the application of neuro‐fuzzy models for complex engineered systems: Case study from a landfill and a boiler

This work aims at developing an explicit neuro‐fuzzy (NF) model to characterize complex engineered systems associated with high nonlinearity, uncertainties, and multivariable couplings. The NF model synergistically exploits the advantages of fuzzy belongingness of each input variable to all output variables and learning ability of neural networks. Owing to the inherent complexities associated with 2 complex engineered systems, a landfill and a boiler were selected to develop models that provide intelligent decisions for optimizing the operational parameters. Data compiled from field‐scale investigation/real plant operation involving various operating scenarios were used to develop the models. Predicting capability of the developed models was evaluated through the correlation coefficient and mean absolute percentage error values. Superiority of the proposed NF model to other similar models has been justified and demonstrated.  

填埋场典型复合衬垫系统单剪试验数值模拟

为研究填埋场典型复合衬垫系统接触面间的滑动特性，建立典型复合衬垫系统单剪试验的有限元模型，用ANSYS对其进行数值仿真分析.研究复合衬垫不同界面在不同法向力下的滑动特征；绘制衬垫系统不同界面节点的应力 位移关系曲线，得到不同法向力作用下各个界面不同位置点沿剪切位移方向和垂直剪切位移方向的切应力变化规律；分析接触面内节点的剪切位移随载荷步的变化特征.结果表明：随法向力的增加，滑动界面将发生转移；在低法向力（56 kPa）条件下，土工网 土工膜界面发生滑动；在高法向压力条件下（压力超过560 kPa），土工膜 黏土界面发生滑动.