Chemical oxygen demand monitoring system and method based on gravity water feeding

Abstract

The invention provides a chemical oxygen demand (COD) monitoring system based on gravity water feeding. The chemical oxygen demand monitoring system comprises a clean water tank and a COD online automatic detector, wherein the clean water tank is provided with a water outlet connected with a water outlet pipeline; the water outlet pipeline is provided with a water outlet pump, a water outlet flow meter and a water outlet control valve; the water outlet pipeline is further provided with a sampling water outlet; the COD online automatic detector is provided with a sampling water inlet; a sampling pipeline is connected between the sampling water outlet and the sampling water inlet; the sampling pipeline is provided with a sampling flow meter, a sampling control valve and a filtering device for filtering suspending particular matters; the sampling water outlet is arranged at a position higher than the sampling water inlet; a water sample flows through the sampling flow meter, the sampling control valve and the filtering device on the sampling pipeline in sequence under the action of gravity, and enters the COD online automatic detector from the sampling water inlet. The chemical oxygen demand monitoring system based on the gravity water feeding, provided by the invention, is reasonable in design and simple and convenient to operate and manage; the chemical oxygen demand monitoring system can be operated and used for a long period while the timeliness and accuracy of monitored data are guaranteed.

Description

technical field [0001] The invention relates to the technical field of wastewater monitoring, in particular to a gravity inflow-based chemical oxygen demand monitoring system and a monitoring method. Background technique [0002] With the rapid development of my country's industrial production, the discharge of industrial wastewater is increasing year by year, and water pollution is serious. According to the development needs of environmental management and the requirements of total amount control, the monitoring of industrial wastewater pollution sources is becoming more and more important. Manual sampling and monitoring alone cannot meet the needs of modern environmental management. Therefore, install water quality on-line automatic monitoring instruments at the sewage outlets of enterprises and establish a monitoring network for real-time monitoring in order to quickly and timely grasp the sewage discharge situation of enterprise wastewater, grasp the changes in water qua...

AI Technical Summary

Problems solved by technology

[0003] At present, influent water sampling is mostly carried by pumps with external power. The disadvantage is that on the one hand, it increases power costs and investment costs;

From the field operation experience of the existing COD online monitoring system, due to the lack of routine daily maintenance and weekly maintenance, some cannot realize synchronous monitoring and become offline stand-alone measurement; The internal pipeline of the online monitoring equipment is blocked, which leads to the distortion of the measured data and cannot truly reflect the water quality of the monitored water samples.

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