SBIR Phase I: Dynamic Predictive Maintenance System for Mitigating CSO & SSO

这个小企业创新研究第一阶段的研究项目开发了一个具有成本效益的解决方案，污水溢流的危险，在联合下水道系统和卫生下水道系统。具体而言，废水系统的复杂性和动态性对维护提出了重大挑战。维护政策的制定是一个工程权衡：过度维护会导致不必要的维护成本，而维护不足会导致更大的溢出风险。所提出的解决方案引入了新颖的技术创新，其解决了当前阻塞检测方法在可靠性和经济可行性方面的限制。可靠地预测堵塞位置将以最低的维护要求降低风险。该项目开发了用于实施动态预测维护系统（DPMS）的技术创新，该系统允许市政废水公用事业机构制定及时维护计划，以减轻联合下水道溢流（CSO）和卫生下水道溢流（SSO）。在美国每年发生超过34000次下水道溢出，导致超过8500亿加仑的未处理废水溢出。在北卡罗来纳州的夏洛特，2007年夏洛特-梅克伦堡公用事业服务区发生了400多起污水溢出事件，导致160万加仑废水溢出。溢流主要是由堵塞引起的。堵塞导致废水从沙井溢出到街道、公共/私人财产或水道中。溢出导致财产损失，环境问题，严重的情况下，公共健康和安全危害。该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。

This Small Business Innovation Research Phase I research project develops a cost effective solution to the sewer overflow hazard within combined sewer systems and sanitary sewer systems. Specifically, the complexity and dynamic nature of the wastewater system presents significant challenges for maintenance. Underlying the maintenance policy development is an engineering trade-off: over-maintenance incurs unnecessary maintenance costs and under-maintenance incurs a greater overflow risk. The proposed solution introduces novel technology innovations which address the limitation in both the reliability and economic feasibility of current blockage detection approaches. Reliably predicting blockage locations will mitigate the risk with minimal maintenance requirements. The proposed project develops the technology innovations for implementing a Dynamic Predictive Maintenance System (DPMS) which allows municipal wastewater utilities to institute a just-in-time maintenance program for mitigating combined sewer overflows (CSO) and sanitary sewer overflows (SSO).Based on the Environmental Protection Agency 2004 Congressional Report, well over 34 thousand sewer overflows occur annually within the United States resulting in spillage in excess of 850 billion gallons of untreated wastewater. In Charlotte, North Carolina, over 400 sanitary sewer overflows occurred in 2007 within the Charlotte-Mecklenburg Utilities service area resulting in 1.6 million gallons of wastewater overflow. The overflows are predominantly caused by blockages. The blockages cause wastewater to spill out of manholes onto streets, public/private property or into waterways. Overflows result in property damage, environmental problems, and, in severe cases, public health and safety hazards.This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).