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Development of environmental modeling methodologies for supporting system simulation, optimization and process control in petroleum waste management.

机译：开发环境建模方法，以支持石油废物管理中的系统仿真，优化和过程控制。

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摘要

In this dissertation research, a set of environmental modeling methodologies has been developed. They include (i) a DPVE-aided (dual-phase-vacuum-extraction-aided) remediation and contaminant transport modeling system (DRCT), (ii) an interval fuzzy programming method with violation analysis (IFVA), (iii) a hybrid simulation-optimization approach for real-time dynamic modeling and process control (HSOPC), and (iv) an integrated process control system based on numerical modeling, stepwise cluster analysis, and discrete-nonlinear optimization for supporting decisions of remediation practices (IPCS). These methods have been applied to a number of western Canadian cases for petroleum waste management and pollution mitigation planning.;The developed IFVA can deal with systems with high uncertainties (in which the related parameters are of wide intervals) through permitting levels of tolerable violation for environmental constraints. Thus, solutions from the violation analysis will not necessarily satisfy all of the model's original constraints. The IFVA was applied to a petroleum waste management system. The results can help generate a number of decision alternatives under various system conditions, allowing in-depth analyses of tradeoffs between environmental and economic objectives as well as those between system optimality and reliability.;The HSOPC has been developed through combining a 3D multi-phase and multi-component subsurface model with a dual-response surface model (DRSM) and a nonlinear optimization system for generating desired operation conditions under various site conditions. The developed methodology was applied to a real-world case study in western Canada. The results can provide bases for guiding real-time process control of surfactant-enhanced remediation under various site conditions. They are also useful for decision makers to analyze tradeoffs between system cost and treatment efficiency.;The IPCS has been developed based on numerical modeling, stepwise cluster analysis, and nonlinear optimization. Firstly, stepwise cluster analysis was used to establish a bridge between remediation operation practices and respondent benzene concentrations in the groundwater. Secondly, nonlinear and discrete optimization models were developed to determine optimal operating conditions. Finally, process control for enhanced in-situ biodegradation was accomplished through incorporating the developed forecasters and optimizers with methods of genetic algorithm and neural networks modeling. The developed control system can support decisions of operation conditions in a real-time manner.;The DRCT has been developed by combining a three-dimension (3D) multiphase and multicomponent subsurface model and a DPVE process model into a general modeling frame. It was applied to a petroleum-contaminated site in western Canada. The DRCT is effective in simulating effects of free-product recovery and groundwater cleanup through processes of DPVE and groundwater remediation. It represents a unique contribution to the fields of groundwater systems modeling and petroleum waste management.
机译：在本文的研究中，开发了一套环境建模方法。它们包括（i）DPVE辅助（双相真空萃取辅助）修复和污染物迁移建模系统（DRCT），（ii）带有违规分析的区间模糊规划方法（IFVA），（iii）混合动力系统实时动态建模和过程控制（HSOPC）的仿真优化方法，以及（iv）基于数值建模，逐步聚类分析和离散非线性优化的集成过程控制系统，以支持补救措施的决策（IPCS）。这些方法已应用于加拿大西部的许多石油废物管理和污染缓解计划案例。发达的IFVA通过允许以下方面的容忍违规程度，可以处理不确定性高的系统（其中相关参数间隔很大）。环境限制。因此，来自违规分析的解决方案不一定会满足模型的所有原始约束。 IFVA已应用于石油废物管理系统。结果可以帮助在各种系统条件下生成许多决策方案，从而可以深入分析环境和经济目标之间以及系统最优性和可靠性之间的权衡。; HSOPC是通过将3D多阶段相结合而开发的以及具有双响应表面模型（DRSM）和非线性优化系统的多组件地下模型，用于在各种现场条件下生成所需的运行条件。所开发的方法应用于加拿大西部的实际案例研究。该结果可为指导在各种现场条件下进行表面活性剂强化修复的实时过程控制提供基础。它们对于决策者分析系统成本和处理效率之间的折衷也是有用的。IPCS是基于数值建模，逐步聚类分析和非线性优化而开发的。首先，采用逐步聚类分析建立了补救措施和地下水中苯浓度之间的桥梁。其次，开发了非线性和离散优化模型来确定最佳运行条件。最后，通过将开发的预测器和优化器与遗传算法和神经网络建模方法相结合，实现了增强原位生物降解的过程控制。所开发的控制系统可以实时支持操作条件的决策。DRCT是通过将三维（3D）多相和多分量地下模型以及DPVE过程模型组合到通用建模框架中而开发的。它已应用于加拿大西部受石油污染的场所。 DRCT通过DPVE和地下水修复过程可以有效地模拟自由产品回收和地下水净化的效果。它对地下水系统建模和石油废物管理领域做出了独特的贡献。

著录项

  • 作者

    Huang, Yuefei.;

  • 作者单位

    The University of Regina (Canada).;

  • 授予单位 The University of Regina (Canada).;
  • 学科 Engineering Civil.;Engineering Environmental.
  • 学位 Ph.D.
  • 年度 2004
  • 页码 348 p.
  • 总页数 348
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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