Sludge thickening tank flocculant automatic quantitative adding system and method

Abstract

The invention discloses a sludge thickening tank flocculant automatic quantitative adding system and method, the system comprises a thickening tank and a storage barrel, the top of the storage barrel is connected with a flocculant supply pipe, the bottom of the storage barrel is connected with a flocculant injection pipe, the flocculant injection pipe is connected with the thickening tank, a floating ball liquid level switch is installed in the storage barrel, an intelligent dynamic flow balance valve is arranged on the flocculant injection pipe, the concentration tank is connected with a sewage pipeline, an overflow pocket is arranged on the concentration tank, an ultrasonic interface instrument and a static pressure type liquid level meter are arranged on the concentration tank, and the floating ball liquid level switch, the intelligent dynamic flow balance valve, the ultrasonic interface instrument and the static pressure type liquid level meter are all connected with a control box. The ultrasonic interface instrument and the static pressure type liquid level meter monitor the dynamic water amount needing to be treated in the concentration tank, the control box calculates the flocculating agent needed for settling the water amount in the concentration tank, the opening degree and the opening time of the intelligent dynamic flow balance valve are controlled, and the purpose of automatically and quantitatively adding the flocculant is achieved.

Description

technical field [0001] The invention relates to the technical field of sludge concentration, in particular to an automatic quantitative addition system and method for flocculant in a sludge concentration tank. Background technique [0002] In the water treatment industry or the coal washing industry, when collecting, treating and recycling sewage, the common link is to set up a thickening tank, and discharge the sludge water in the process into the thickening tank for sedimentation. After being dehydrated and squeezed into massive solids by a filter press, the automatic quantitative addition method of flocculant to make the sewage in the thickening tank precipitate quickly is one of the important research topics in the field of water treatment technology and coal washing technology in recent years. [0003] For example, for a coal washing system that is being produced, the washed slime water will be discharged into the thickening tank in a concentrated manner. In order to ma...

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Problems solved by technology

[0004] For artificial flocculant addition, it is to transport the prepared flocculant with a certain concentration to the buffer tank, and then the workers manually open the manual valve on the pipeline and add it according to experience. The disadvantage of this flocculant addition method is that the labor is difficult for workers, The amount of addition is not easy to control and the water quality in the concentration tank cannot meet the process requirements

[0005] The flocculant addition method of the above form in the prior art, due to its obvious disadvantages, has caused varying degrees of impact on production in practical applications. Therefore, we propose an automatic quantitative flocculant addition system for sludge thickening tanks and its method to solve the above problems

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