Fluidized bed water treatment device realizing chemical crystallization circulating granulation

Abstract

The invention provides a fluidized bed water treatment device realizing chemical crystallization circulating granulation. The device is characterized in that a water distribution area, a chemical distribution area, a granulation area and a clear water area are sequentially arranged in a cylinder from bottom to top; the granulation area is divided into three areas by an inner cylinder, an area close to the bottom in the inner cylinder is a fluidization area, an area close to the top in the inner cylinder is a separation area, an interlayer between the inner cylinder and the cylinder is a static settling area; the fluidization area is communicated with a seed crystal adding pipe, seed crystals circularly flow among the fluidization area, the separation area and the static settling area, and ions in water realize the chemical crystallization circulating granulation in the flowing process; the fluidization area is further communicated with a grain discharge pipe, and grains formed through the chemical crystallization circulating granulation are settled to the bottom in the fluidization area and discharged from the grain discharge pipe finally. The overall structure is clear, function units are compactly connected, the plane utilization rate is high, the operation is convenient, a certain single ion in multiple kinds of ions can be removed, and multiple kinds of ions in water can be removed efficiently and synchronously.

Description

technical field [0001] The invention belongs to the field of water treatment and relates to a water treatment device, in particular to a chemical crystallization circulating granulation fluidized bed water treatment device. Background technique [0002] Various soluble cations and anions present in water, such as Ca 2+ , Mg 2+ , Fe 2+ , Mn 2+ 、As 3+ , F - Plasma, when present in a small amount in water, will not affect people's health, and even be beneficial to people. But once it exists in water in excess, it will endanger human health and needs to be removed, such as Ca 2+ , Mg 2+ Exceeding the standard will lead to increased hardness in the water, etc. At present, for the removal of these metal ions, such as Ca 2+ , Mg 2+ Ion exchange method and lime softening method are the most widely used for removal. The cost of ion exchange method is high, it is greatly affected by the quality of raw water, and it is easy to cause secondary pollution. The lime softening met...

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Problems solved by technology

[0003] Based on the problems existing in the prior art, the present invention provides a chemical crystallization circulating granulation fluidized bed water treatment device, which solves the problem that the particles cannot be cyclically grown in the water treatment process, and the particle discharge period is short, resulting in poor water treatment effect.

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