Intermittent water inlet high-density sedimentation tank operation control system and method

Abstract

The invention discloses an intermittent water inlet high-density sedimentation tank operation control system and method. The system comprises a first suspended matter concentration meter, a PAC dosingpump, a PAM dosing pump, a sludge concentration meter, a liquid level meter, a sludge interface instrument, a second suspended matter concentration meter, a residual sludge pump, a return sludge pump, a stirrer, a mixer and a sludge scraper which are correspondingly arranged in each area of a high-density sedimentation tank, and is further provided with a control device which is electrically connected with all the devices, and can conduct intermittent water inflow linkage control, backflow linkage control and sludge discharge linkage control on the high-density sedimentation tank according tothe water inflow state, the sludge concentration state and the sludge position state of the high-density sedimentation tank. According to the system and the method, the dosing amount, the reflux ratio and the sludge discharge time can be adjusted in time according to the water inlet and outlet amount and the water quality, the water quality of outlet water can be improved, chemical consumption and power consumption are reduced, and the manual labor intensity is reduced.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to an operation control system and method for a high-density sedimentation tank with intermittent water inflow. Background technique [0002] The existing high-density sedimentation tanks are all continuous water intake, the control mode is all fixed reflux ratio, and the sludge discharge is mainly manual. However, the actual SBR process of intermittent water inflow and outflow will result in a large amount of water inflow to the high-density sedimentation tank in the early stage and a small amount of water inflow in the later stage. Sometimes the high-density sedimentation tank does not have water inflow. Therefore, the high-density sedimentation tank operates in the mode of continuous water inflow and outflow, which will inevitably lead to the following problems: when there is no water inflow, there will be invalid dosing and power consumption, and the fixed dosing amount will also...

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Problems solved by technology

[0003] Based on the problems existing in the prior art, the present invention provides a high-density sedimentation tank operation control system and method for intermittent water inflow, which can solve the problem that the existing high-density sedimentation tank operates in a continuous water inflow and outflow mode, and there is no water inflow Ineffective dosing and power consumption will occur when the fixed dosing amount encounters water volume deviation, and the problem of insufficient or too large dosage will also occur.

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