High-efficiency separation and concentration device for waste slurry water in mixing plant

Abstract

The invention discloses an efficient separation and concentration device for waste slurry water in a mixing plant. The efficient separation and concentration device comprises a graded feeding device and a concentration device which communicate with each other, wherein an air inlet and a waste slurry water inlet are formed in the graded feeding device; gas and waste slurry water entering from the air inlet and the waste slurry water inlet can form rotational flow in the graded feeding device; the concentration device comprises a barrel; a filter-pressing device is arranged at the top of the barrel, and a material collecting cavity located below the filter-pressing device is formed in the barrel; and an underflow opening is formed in the bottom of the material collecting cavity, and an anti-blocking device is arranged at the underflow opening. According to the invention, the waste slurry water can be effectively treated in time, the concentration of the waste slurry water in the mixing plant is increased; meanwhile, clear water is separated out and used for circulating water of the mixing plant, so the water demand of the mixing plant is reduced; and in addition, the occupied area of the used equipment is small, the functions of an existing sedimentation tank are completely replaced, and the clean treatment process of the waste slurry water in the mixing plant is achieved.

Description

technical field [0001] The invention belongs to the technical field of waste slurry water concentration, and in particular relates to a high-efficiency separation and concentration device for waste slurry water in a mixing station. Background technique [0002] Waste water is the liquid slurry after the sand and gravel and coarse sand are separated from the waste water and waste residues generated after the concrete production, transportation and construction related equipment are cleaned by the sand and gravel separation equipment. According to statistics, in 2019, the production volume of commercial concrete in my country reached 2.378 billion cubic meters, with an average annual output of nearly 100 million tons of waste water. The pH of the waste water is ≥11. If it is directly discharged without disposal, it will cause great harm to the ecology and does not meet the requirements of environmental protection. [0003] At present, the main disposal methods of waste slurry...

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Problems solved by technology

In addition, the amount of concrete produced by the batching plant is uncertain every day. If the daily production volume is small, the daily waste slurry water cannot be fully utilized, and the excess waste slurry has to be disposed of by pressure filtration, which increases the disposal cost.

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