在线水质仪表在城市污水厂节能中的应用

Application of Online Water Quality Instrument to Energy Saving in WWTP

随着经济的发展以及环保要求的不断提高,需要建设越来越多的污水处理厂,对污水处理厂的排放标准也日益严格,污水处理厂的优化运行显得尤其重要。目前大部分污水处理厂只有当出水水质超标时才会改变运行方式,只要出水水质达到排放标准就维持保守的运行方式。当进水负荷变化时,出水指标就会产生波动。而且,当进水负荷偏低时,会造成浪费。在线水质仪表在污水处理厂的应用,使得实时监测进水负荷成为可能,也为污水处理工艺的优化控制奠定了基础。实践证明,通过实时监测进水负荷,利用各种数学模型,结合现代控制理论,对污水处理厂进行优化运行,能够提高处理效率、节能降耗、减少运行成本和碳排放。通过对进水负荷的快速响应,能够增强系统的稳定性,抵抗冲击负荷。

With economic development and rise of environmental requirement, more wastewater treatment plants need to be built, the discharge standards for wastewater treatment plants are increasingly stringent, and the optimized operation of wastcwater treatment plant is especially important. At present, most of wastewater treatment plants will change the operation mode only when the effluent exceeds the discharge standard. As long as the effluent is within the discharge standard, the conservative operation mode is kept. When the hydraulic load of the influent changes, the indexes of the effluent fluctuate. Moreover, when the hydraulic load of the influent is low, it will result in waste. Online water quality instrument in wastewater treatment plant enables to real-timely monitor the hydraulic load of the influent and lays the foundation for optimized control of wastewater treatment process. The practice shows that the optimized operation of wastewater treatment plant by real-timely monitoring the hydraulic load of the influent, using mathematical models and combining modern control theory can improve the treatment efficiency, save energy consumption and reduce the operation cost and carbon emissions. Through quick response to the hydraulic load of the influent, the system stability and the resistance to impact load can be enhanced.