Research On Ecological Management Model Of Project Risk In Urban Wastewater Auto-monitoring System

The purpose of Auto-monitoring System for Urban Wastewater (AMSURC) is to solve some problems, such asrelatively less monitoring frequency in laboratory and sampling error. And, it can reflect the real situation of urban drainage, provide effective monitoring data support for environmental policy-making at all levels. But in reality, the project management of AMSURC is an ongoing management process, involving many factors, large investment and long construction period. There is great uncertainty in project operation and management, so project risk is inevitable. The paper aims to establish effective project risk management model for AMSURC, and provide the basis for decision-making and large-scale promotion. The research can enrich and improve water management and risk management and related theories, improve monitoring data quality and the capacity for project sustainable operations.After a brief literature review and comment, this paper analyzed the applicability of project risk management based on ecological theory through systematic analysis method. This paper used the Delphi method for risk identification in AMSURC, and screened the project risk evaluation indices through the fuzzy gray decision model selection in the gray evaluation theory. This paper established project risk management model and structure model within risk management factor of the project using structural equation and establish a "defensive tree" model of AMSURC by analogy method.At last, this paper chose the gray decision model and fuzzy comprehensive evaluation for Liede project risk empirical evaluation., The conclsions are as following:(1) It is feasible to research the model of project risk management in AMSURC with ecology theory. The project of AMSURC has ecological characteristics. And there are systematic, collaborative, environmental adaptability requirements in AMSURC.(2) The main factors of the project risk could be summarized as: monitoring standards, project construction model, the atmosphere of project construction, the construction quality of system, human resources in project operation, project operations style, project decisions influence, et al.(3)This paper built a set of key risk assessment system eventually. The project risk could be found thoughout the project life cycle(the demonstration phase-Build phase-Operate phase).(4) This paper established project risk management model and structure model within risk management factor of the project. Combined with the model, it could find that Some project risk management factors (for example:the staff, imfomation, management activities) have an important impact on the success of project risk management.(5) This paper proposed an eco-management mode firstly, and establish a "defensive tree" model of AMSURC. This model stressed the importance of holistic thinking; stressed interaction and dynamic balance among management factor; emphasized on the adaptation to management environment."Defensive tree" is an organic combination of root zone, trunk and canopy layer. Root zone mainly refers to personnel factors. Trunk layer mainly refers to project risk management process and information management. Canopy layer mainly refers to project culture, organizational management activities, equipment management, and data control. The "defensive tree" vividly depicted the process of project risk management, ecological balance between the internal management of project risk factors and the external environment.(6) Select water quality monitoring system of Liede sewage treatment plant which was in Guangzhou as Empirical object, the paper provided some specific risk strategies, combinating "defensive tree" model. One management strategy is from the perspective of management factors. The other is from the perspective of risk prevention and specific implementation path for Liede project.