An automatic adjustment method and adjustment device for an oxidation ditch outlet weir

Abstract

The invention relates to an oxidation ditch effluent weir automatic regulation method and regulation device. The method comprises the following steps: (1) a controller, a process system and an electric control system are respectively enabled to be in the standby state; (2) an aeration power set value Q is transmitted to the process system, the process system calculates an aeration power actual value q and judges whether the q / Q-1 absolute value is greater than a preset value, if not, returns to the standby state, and if so, enters the next step; (3) the process system calculates a liquid level set value LS of a reaction tank; (4) the process system calculates a liquid level difference DeltaL and judges whether the absolute value of the liquid level difference DeltaL is less than a set value, if so, returns to the standby state, and if not, enters the next step; (5) the process system calculates an opening regulation set value DeltaP, and transmits the calculation result to the electric control system; and (6) the electric control system calculates a control command of an electromotor, controls the electromotor to move through the control command, judges whether the execution of the control command is finished, and if so, returns to the step (4). The method can accurately control the aeration plant according to the effluent weir opening, thereby achieving the goal of energy saving.

Description

technical field [0001] The invention belongs to the technical field of urban sewage treatment, and in particular relates to an automatic adjustment method and an adjustment device for an oxidation ditch outlet weir. Background technique [0002] There is a large demand for urban sewage treatment in my country, and nearly 5,000 sewage treatment plants have been built. Oxidation ditch sewage treatment process has a long history and is widely used because of its simple construction and operation, denitrification and phosphorus removal functions, strong complete mixing and buffering capacity, and a wide range of adaptability to influent characteristics and scales. However, the oxidation ditch sewage treatment process also has obvious shortcomings, mainly concentrated in two aspects: (1) The energy consumption of the oxidation ditch sewage treatment process is higher than that of the traditional activated sludge method, because the external energy must be input to maintain the ac...

AI Technical Summary

Problems solved by technology

However, the oxidation ditch sewage treatment process also has obvious shortcomings, mainly concentrated in two aspects: (1) The energy consumption of the oxidation ditch sewage treatment process is higher than that of the traditional activated sludge method, because the external energy must be input to maintain the activated sludge in the oxidation ditch system medium fast cycle

(2) The adjustment and control methods of the oxidation ditch sewage treatment process are relatively lacking, especially the precise adjustment of the aeration equipment during the aeration process is difficult

The electric adjustment device of the outlet weir in the prior art generally can only limit the fully open or fully closed position of the outlet weir, although the middle position of the outlet weir can be adjusted manually, but the adjustment effect can only be vaguely judged

The common electric adjustment device for the outlet weir not only cannot accurately adjust the outlet weir to the designated position, but also cannot be adjusted remotely and automatically, and thus can neither accurately control the aeration equipment through the opening of the outlet weir to achieve the purpose of energy saving, but also increases labor costs

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