净水厂及污水处理厂投资估算阶段的风险控制

净水厂及污水处理厂工程一般采用社会资本和政府合作模式(PPP)建设运营。PPP项目的总投资对政府支出责任、社会资本的合理回报具有决定性的影响。投资估算过低或者过高将给政府和社会资本方投资带来很大风险。分析了进出水水质的确定、设计处理工艺的选择、设计处理规模的确定、构筑物及建筑物估算指标选取、设备材料费用取值、地基处理费、厂区周边情况、支护费用、总平面布置费用、改扩建项目特有费用、工程建设其他费用等在估算阶段常见的投资风险因素,针对不同因素提出相应对策,为新项目的估算提供经验和建议,以进一步降低投资风险。

Risk Control for Investment Estimation in Waterworks and Sewage Treatment Plant Projects

Water purification and sewage treatment projects are usually executed in PPP ( Public Private Partnership) mode. Project investment is a crucial factor which determines governmental payment responsibilities and returning rate of the private party. Underestimation or overestimation of project investment brings high risks to both parties involved. The article analyzed factors which frequently caused investment risks such as influent and effluent quality, treatment process, treatment capacity, selection of estimate index for structures, buildings and equipment, foundation treatment, surrounding situation, supporting structure, general layout, modification and extension content and auxiliary project costs. It also proposed corresponding countermeasures in order to reduce the project risks to lower degree.