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A kind of flocculant automatic dosing control method

An automatic dosing and flocculant technology, applied in the direction of electrical program control, flocculation/sedimentation water/sewage treatment, sequence/logic controller program control, etc., can solve problems such as not considering other uses, and achieve water saving The effect of treatment cost, guaranteed stability and stable water quality

Inactive Publication Date: 2012-02-01
HOHAI UNIV
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Problems solved by technology

[0004] In addition, with the rapid development of society, sewage treatment plants have gradually popularized the use of on-line monitors instead of manual testing to detect the main indicators of water, so that the expensive online monitors purchased are only used as online monitoring systems, and are not considered for other purposes.

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  • A kind of flocculant automatic dosing control method
  • A kind of flocculant automatic dosing control method

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Embodiment Construction

[0035] The present invention and its specific implementations will be described in further detail below in conjunction with the accompanying drawings.

[0036] Flocculant automatic dosing control system, including feedback control system, PLC control system, metering pump, mixer and filter tank; It is composed of an online TP monitor for phosphorus content and an online SS tester for measuring the content of suspended solids in sewage. The input terminals are connected, the output terminals of the flow meter, online TP monitor, and online SS measuring instrument are respectively connected with the input terminals of the PLC control system, and the output terminals of the PLC control system are connected with the metering pump, mixer and filter tank in turn.

[0037] The flocculant automatic dosing control method of the present invention comprises the following steps,

[0038] A. Use a flow meter to measure the sewage flow;

[0039] B. Utilize the online TP analyzer to measur...

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Abstract

The invention discloses a flocculant automatic dosing control method, which belongs to the field of sewage treatment. The feedback control system mainly measures the flow rate and TP and SS concentrations of sewage after sewage treatment, and feeds back the measurement results to the PLC control system. The system controls the feedback of the system according to the flow rate and TP and SS feedback, and according to the formula ΔX agent=k×Q×L×(P-1.1A)a×(S-1.05B)b / (λ×N), through the formula The calculation of undetermined parameters indirectly determines the dosage of flocculant. According to the coagulation effect of sewage treatment, the present invention adjusts the addition amount of the flocculant in time to ensure that the amount of the flocculant reaches the optimal amount and the effect of water treatment is ensured.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to an automatic dosing control method for micro-flocculation filtration or coagulation sedimentation filtration. Background technique [0002] At present, the whole world is facing the problem of shortage of water resources. As a limited resource, the recycling of water, that is, the advanced treatment of sewage, has become the only way to solve the problem. [0003] Research and development of economical and efficient sewage advanced treatment technology has urgent practical significance for reducing the total amount of pollutants, improving the water environment, creating a good water environment and improving people's quality of life. Advanced treatment generally adopts micro-flocculation filtration or coagulation-sedimentation filtration process to further remove the main pollutants in the secondary effluent, and the flocculant added is the main operating cost of micro-flocculation f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/05C02F1/52
Inventor 李轶刘志刚
Owner HOHAI UNIV
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