Automatic control method combining constant water level and constant water quantity of sewage plant

Abstract

The invention provides an automatic control method combining a constant water level and constant water quantity of a sewage plant. The sewage plant is provided with a water inlet pump room and at least one pump station. A water inlet pump and a transfer pump are arranged in the water inlet pump room, the water inlet pump is used for conveying water into a biological pool in a sewage plant, the flow of the water inlet pump is A, the transfer pump is used for transferring water to other sewage plants, the pump stations independently convey water to the biological pool in the plant, the flow of the pump stations is B, the total flow in the plant is A+B, the transfer pump executes a constant liquid level control mode, so that the liquid level of the water inlet pump room is kept unchanged, thewater inlet pump executes a constant-flow control mode, so that the total flow in the plant is kept constant. According to the automatic control method, a constant water level-constant water quantitycontrol mode of the sewage plant can be realized, the production operation is stabilized under the condition of ensuring the treatment load of the sewage plant, and the water level of an outer pipe network is reduced.

Description

technical field [0001] The invention relates to a method for automatic control of water volume in a sewage plant, in particular to an automatic control method for combining constant water level and constant water volume in a sewage plant. Background technique [0002] Water volume control is the core element in the production and operation of sewage plants. The greater the fluctuation of influent water, the greater the time-varying coefficient, and the higher the requirements for the control of dissolved oxygen and sludge concentration in the plant. To stabilize production and operation, the higher the time-varying coefficient The smaller the better. At present, the automatic control program of most sewage plant inlet pump rooms only starts and stops according to the liquid level of the inlet pump room to regulate the inflow flow, and cannot match the water delivery volume of the upstream pump station. Often, the water delivery volume of the pump station network exceeds the ...

AI Technical Summary

Problems solved by technology

At present, the automatic control program of most sewage plant inlet pump rooms only starts and stops according to the liquid level of the inlet pump room to regulate the inflow flow, and cannot match the water delivery volume of the upstream pump station. Often, the water delivery volume of the pump station network exceeds the design load of the sewage plant or The phenomenon of "morning peak and evening peak" has a certain impact on the sewage dispatching of sewage plants and pipe networks

Images