Automatic chemical dosing system for wastewater treatment

Abstract

The invention discloses an automatic chemical dosing system for wastewater treatment. The automatic chemical dosing system comprises: a chemical storage tank; a reactor, which is internally provided with a pH meter and / or an ORP meter; a wastewater pool; a chemical extraction assembly, which comprises a chemical feeding pump, a chemical flow meter and a back pressure valve; a wastewater pumping assembly, which comprises a wastewater lifting pump, a proportional control valve and a wastewater flow meter; a PLC, which is electrically connected with the chemical feeding pump, the chemical flow meter, the wastewater lifting pump and the wastewater flow meter separately, is connected with the proportional control valve, the pH meter and the ORP meter, and is electrically connected with the pressure sensor; a quantitative control module, which is connected with the PLC and is used for acquiring instantaneous flow information and accumulated flow information of the wastewater flow meter; anda wireless communication module, which is electrically connected with the PLC and is used for communicating with external communication equipment. According to the invention, the problems that conventional wastewater treatment systems are difficult to realize specific quantitative control and automation degrees are relatively low are solved.

Description

technical field [0001] The invention belongs to the field of waste water treatment, in particular to an automatic dosing system for waste water treatment. Background technique [0002] The physical and chemical method is often used in the pretreatment process of wastewater treatment. In the process of physical and chemical treatment, water treatment chemicals need to be added to the treated wastewater. The methods of adding chemicals include single-point dosing by dosing pump and multi-point dosing by dosing pump. Adding, gravity self-flow dosing, etc., the whole wastewater treatment system is basically used to control the dosing flow of the pump or adjust the dosage according to the opening and closing degree of the valve. Most of the operation process is human intervention, and most of them are based on excessive dosage. To maintain the stability of the system, it is difficult to achieve specific quantitative control, and the degree of automation is low. Contents of the ...

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Problems solved by technology

[0003] Based on this, it is necessary to propose an automatic dosing system for wastewater treatment in view of the problems that the wastewater treatment system in the prior art is difficult to achieve specific quantitative control and the degree of automation is low.

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