Lime softening density sedimentation tank for reclaimed water station

Abstract

The invention discloses a reclaimed water station lime softening density settling pond which comprises a settling pond body, a mud scraper is arranged at the bottom in the settling pond body, a support is installed in the settling pond body, an inclined pipe is installed on the support, a plurality of partition plates are fixed to the support at equal intervals, the partition plates divide the support into a plurality of areas, and the partition plates are arranged in the settling pond body. A plurality of water collecting tanks are arranged at the upper end of the sedimentation tank at equal intervals, a plurality of flocculation tanks are arranged on the periphery of the sedimentation tank at equal intervals, a plurality of water inlet tanks are arranged on the support, the water inlet tanks and the flocculation tanks are in one-to-one correspondence, and baffles are mounted in the flocculation tanks. Through optimal design of the density sedimentation tank, the mixing efficiency of sewage and chemicals in each chemical adding stage is improved, the impurity removal efficiency is high, the flocculation capacity is high, the treatment capacity is high, relatively good impurity removal and sedimentation can be completed at different flow speeds, the ion concentration and the pH value of reclaimed water are stabilized, and the equipment can normally operate during cleaning without influencing use.

Description

technical field [0001] The invention relates to the technical field of reclaimed water treatment, in particular to a lime softening density sedimentation tank of a reclaimed water station. Background technique [0002] During the use of the reclaimed water station, the calcium and magnesium ions in the influent water are relatively high, and these ions will form scale due to concentration on the concentrated water side of the RO membrane and anions in the water (such as CO32-, HCO3-, SO42-) , affecting the normal and stable operation of the membrane system. Due to the large amount of waste water and high hardness of the project, chemical methods with low investment are generally used to remove hardness. [0003] In the process of reclaimed water treatment, the residence time of water in the pool is short, and the water used in the factory often has the problem of water instability. When the water volume is too large, the pH of the effluent fluctuates, causing subsequent mem...

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Problems solved by technology

[0004] This application provides a lime softening density sedimentation tank of a reclaimed water station, which solves the problem that when the water treatment equipment treats sewage with large flow fluctuations, the pH value fluctuates greatly, which affects the subsequent membrane group treatment, and the water treatment equipment is not easy to clean.

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