Automatic control system for sewage treatment in sewage treatment plant

Abstract

The invention discloses an automatic control system for sewage treatment in a sewage treatment plant. The automatic control system comprises a water collecting tank, a reaction tank, a water storage tank, a biochemical tank and a water settling tank, wherein the water collecting tank is communicated with the reaction tank through a first water pump; the reaction tank is communicated with the water storage tank through a water pipe; the water storage tank is communicated with the biochemical tank through a second water pump; the biochemical tank is communicated with the water settling tank via another water pipe; the water collecting tank, the reaction tank, the water storage tank, the biochemical tank and the water settling tank are respectively provided with a float-ball level meter; the first water pump and the second water pump are respectively controlled by a first driving motor and a second driving motor; the first driving motor is controlled by a first PLC control cabinet; the second driving motor is controlled by a second PLC control cabinet; the float-ball level meters in the water collecting tank, the reaction tank and the water storage tank are connected with the first PLC control cabinet via the Ethernet; and the float-ball level meters in the biochemical tank and the water settling tank are connected with the second PLC control cabinet via the Ethernet. The automatic control system provided by the invention can reduce the laying quantity of cables and lower maintenance cost.

Description

technical field [0001] The invention relates to sewage treatment technology, in particular to an automatic control system for sewage treatment used in sewage treatment plants. Background technique [0002] At present, the current sewage treatment system is generally realized by the PLC supplied by the market. The control host is set in the general monitoring room, and a control cabinet station is respectively set in the sump pool, reaction pool, water storage pool, biochemical pool and sinking pool. The station uses a large and medium-sized PLC to control the equipment of the substation. When laying cables, it will cause a large amount of cables to be laid, resulting in excessive maintenance costs. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an automatic control system for sewage treatment used in sewage treatment plants, which can save the amount of cable laying and reduce maintenance costs. [0004] In ord...

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Problems solved by technology

[0002] At present, the current sewage treatment system is generally realized by the PLC supplied by the market. The control host is set in the general monitoring room, and a control cabinet station is respectively set in the sump pool, reaction pool, water storage pool, biochemical pool and sinking pool. The station uses a large and medium-sized PLC to control the equipment of the sub-station. When laying cables, it will lead to a large amount of cable laying, resulting in excessive maintenance costs.

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