水厂HACCP体系的关键控制点确定及在臭氧投加控制中的应用实践  

Application Practice of CCPs Determination and Ozone Dosing Control in HACCP System of WTP

作　　者：李柱 LI Zhu(Water Production Branch,Shanghai Chengtou WaterCo.,Ltd.,Shanghai 200086,China)

机构地区：[1]上海城投水务<集团>有限公司制水分公司,上海200086

出　　处：《净水技术》2024年第10期72-76,93,共6页Water Purification Technology

摘　　要：文章介绍了危害分析和关键控制点(HACCP)体系的基本原理及其在城市供水系统中应用进展,为建立稳定的制水全过程控制方法和预防为先的风险管控手段,上海某水厂引入了HACCP体系,并详细论述其体系建立、贯标和实施的全过程,详细阐述了关键控制点(CCPs)的辨识确立过程以及闭环控制措施,并以水厂过程工艺CCPs后臭氧投加量为例,通过全光谱分析仪作为在线实时检测手段,有效实现臭氧投加与过程水水质的反馈闭环控制,达到了实时纠偏并即时验证效果,余臭氧值稳定控制在0.07~0.10 mg/L,较传统液氧投加成本下降5.1%,体现了HACCP体系在水厂生产过程中的质量管控和降低安全风险的重要性,为水厂精细化管理提供了参考,并提出了进一步结合先进的数字化技术及数学模型赋能提高CCPs的预测和预警能力的设想。This paper introduces the basic principles of the hazard analysis and critical control point(HACCP)system and its application progress in urban water supply systems.In order to establish a stable control method for the entire water production process and a risk control method that prioritizes prevention,a water treatment plant(WTP)in Shanghai has introduced the HACCP system and elaborated on the entire process of its establishment,standardization,and implementation.It also elaborates on the identification and establishment process of critical control points(CCPs)and closed-loop control measures.Taking the ozone dosage after the key point of process control in the WTP as an example,a full spectrum analyzer is used as an online real-time detection method.The effective implementation of feedback closed-loop control between ozone addition and process water quality has achieved real-time correction and verification effects.The residual ozone value is stably controlled between 0.07~0.10 mg/L,which is a 5.1%reduction in cost compared to traditional liquid oxygen addition.This reflects the importance of HACCP system in quality management and reducing safety risks in the production process of WTPs,providing a reference for refined management of WTPs.And it proposes the idea of further combining advanced digital technology and mathematical models to empower and improve the prediction and early warning capabilities of key control points.

关 键 词：危害分析和关键控制点(HACCP)体系 关键控制点 水厂 水质 纠偏 

分 类 号：TU991[建筑科学—市政工程]