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
Key words
hazard analysis and critical control point(HACCP)system/critical control point(CCP)/water treatment plant(WTP)/water quality/corrective deviation
维普
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