High-load crystal nucleus solid-liquid separation device and method

Abstract

The invention discloses a high-load crystal nucleus solid-liquid separation device and method. The device comprises an inner shell and an outer shell, and a clear water area, a honeycomb filler, a separation area, a concentration area and a sludge collection area are sequentially arranged in the outer shell from top to bottom; the inner shell is arranged in the separation area and comprises a granulation area and a flocculation area which communicate with each other up and down, and the size of a top inlet of the flocculation area is larger than that of a bottom outlet of the granulation area;the granulation area is connected with a water inlet pipe and a seed crystal adding pipe; the flocculation area is connected with a coagulant adding pipe and a coagulant aid adding pipe; stirrers arerespectively arranged in the granulation area and the flocculation area; a sludge return pipe is connected between the bottoms of the sludge collection area and the flocculation area, and a sludge return pump is arranged on the sludge return pipe. Crystals are added to serve as a carrier, the particle size of flocs is increased, the purification effect of the crystals on softened water and turbidity-removed water is enhanced, meanwhile, the interception effect of colloidal and suspended pollutants is enhanced through mechanical friction and extrusion in the crystals and the adsorption bridging effect of PAM, and efficient purification of the softened water and the turbidity-removed water is achieved.

Description

technical field [0001] The invention relates to a water quality purification device, in particular to a high-load crystal nucleus solid-liquid separation device and method integrating crystallization, granulation, coagulation, flocculation, clarification, precipitation, sludge concentration, sludge reflux and water outlet . It can be applied to the purification treatment of circulating water or softening and clarification of desalinated water. Background technique [0002] As the country pays more attention to environmental protection and the shortage of water resources, water purification and waste water recycling are getting more and more attention. A large number of water treatment technologies and equipment based on the theoretical basis of solid-liquid separation in the suspension layer have been developed and widely used in practical projects. Typical equipment includes French Veolia Actiflo clarifier, French Degremont company DensaDeg high-density clarifier and Phili...

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Problems solved by technology

[0010] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a high-load crystal nucleus solid-liquid separation device and method to solve the problem of the loss of small particles and the low formation rate of large particles in the existing granulation fluidized bed, resulting in reduced processing efficiency technical issues

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