On-line soft sensing method for flow of inlet water of ozonation contact reactor in water plant

Abstract

The invention discloses an on-line soft sensing method for the flow of inlet water of an ozonation contact reactor in a water plant. Aiming at the problem of failure to measure the flow of inlet water of an ozonation contact reactor in a water plant on line due to the restrictions of technological conditions, the invention provides a test method of an inlet water lift pump of an ozonation contactreactor permitted under the on-line working conditions. By obtaining the frequency-flow correspondence curve of the operation of the lift pump at the actual maximum working pump lift Hmax and the actual minimum working pump lift Hmin, a monitoring computer in a central control room generates the real-time frequency-flow correspondence curve at the current working pump lift Hreal based on the measured current working pump lift Hreal and the frequency-flow correspondence curve obtained by tests in the subsequent automatic control process of ozone dosage, and further obtains the real-time flow of the inlet water of the ozonation contact reactor by inquiring the curve to automatically obtain the real-time flow of the inlet water lift pump of the ozonation contact reactor. The invention has the advantages of practicability, reliability, no additional cost and wide applicability.

Description

technical field [0001] The invention relates to a method for measuring the inflow flow of an ozone contact tank in a water plant, in particular to an online soft measurement method for the inflow flow of an ozone contact tank. Background technique [0002] The basic source of drinking water for the vast number of urban residents in China is tap water. The quality of tap water is very important to the health of residents. It is required to be colorless, transparent, odorless and tasteless in terms of senses; free of harmful poisons in terms of chemistry; free of harmful substances in terms of bacteriology. Pathogenic bacteria, so there are restrictions on Escherichia coli and the total number of bacteria. For raw water of Class III quality, the waterworks can basically meet the above requirements by adopting traditional conventional treatment processes. [0003] The traditional conventional treatment process of the water plant is mainly to add coagulant at the front of the s...

AI Technical Summary

Problems solved by technology

[0009] Purpose of the invention: According to the technical conditions of the researched water plants, the present invention solves the problem that many water plants in my country that originally adopted the traditional conventional process add "ozone-activated carbon" advanced treatment process after the conventional process. An online flowmeter is installed at the water outlet of the lifting pump room 2 before the ozone contact tank, and the real-time flow rate of the ozone contact tank cannot be measured online. It is proposed to use the water outlet flow of the lifting pump room 2 (frequency conversion control) before the ozone contact tank enters the water. Real-time calculation of the soft sensor test and measurement method for the influent flow of the ozone contact tank, so as to provide accurate data of the influent flow of the ozone contact tank for the subsequent optimal control of ozone dosing

Images