Dosing system and method based on floc feature monitoring and process feedback

Abstract

The invention discloses a dosing system and method based on floc characteristic monitoring and process feedback, and relates to the field of chemical phosphorus removal and flocculation in sewage treatment. Comprising a water quality monitoring module used for water quality monitoring of inlet water and outlet water; the floc particle size characteristic monitoring module is used for continuously monitoring the floc particle size characteristics of phosphorus removal / flocculation in the flocculation process; the digital-analog analysis module is connected with the water quality monitoring module and the floc particle size characteristic monitoring module, and is used for carrying out digital-analog analysis on the demand of a chemical adding amount through three kinds of feedbacks, namely water inlet feedforward according to the water inlet quality parameter set, water outlet feedback according to the water outlet quality parameter set and process feedback according to the dynamic change set of the floc particle size characteristics; the calculation module is connected with the digital-analog analysis module and is used for dosing self-adjustment optimization; and the dosing control module is connected with the calculation module and is used for realizing real-time regulation and control of dosing amount. According to the method, the effect of the chemical phosphorus removal / flocculation process is dynamically monitored in real time, and the treatment process effect and pre-judgment control can be effectively fed back.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a dosing system and method based on floc characteristic monitoring and process feedback applied in the process of chemical phosphorus removal and flocculation treatment. Background technique [0002] The shortage of water resources and water pollution are worldwide problems, and the scarcity of water resources has become a major issue related to sustainable development and human survival. my country's water resources are in short supply and are seriously unevenly distributed, and the problem of water pollution is particularly serious. The two fundamental water problems are "dirty water and little water". In view of the current situation of my country's water environment, the rational use of water resources, and the promotion and strengthening of in-depth and efficient treatment of sewage have become particularly important and have far-reaching significance. [0003] According to ...

AI Technical Summary

Problems solved by technology

However, due to the frequent fluctuations and uncertainties of water quantity, water quality and sewage treatment system, the limitation of artificial experience control ability and the hysteresis of control response, the dosing of phosphorus removal chemicals is inevitably caused by excessive dosage and waste of chemicals, and at the same time Exceeding the standard risk to the safety of effluent water standards

[0007] Although some dosing systems or control methods have appeared on the market in recent years, such as Chinese patents with publication numbers CN112456621A, CN110183027A, CN111233118A, CN111966053A, etc., but their core control logic is mostly based on water inflow The change of water volume or index concentration adjusts the corresponding dosing amount, which does not fully consider the operation status of the entire sewage treatment system and the comprehensive feedback of the process, and lacks the monitoring of the core process / status indicators of the chemical treatment efficiency / effect feedback. Lack of self-regulation and optimization feedback, self-learning ability, and water safety issues

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