A device for deep purification of phosphoric acid wastewater based on adsorption regeneration structure

By designing a convex stepped baffle structure with a high center and low edges, and an adsorption and regeneration device with differentiated pore sizes, the problems of vertical discharge and short flow of wastewater in traditional wastewater purification devices are solved, achieving deep purification of phosphoric acid wastewater and efficient utilization of adsorbents.

CN121974532BActive Publication Date: 2026-06-19SHAANXI ORANGE IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHAANXI ORANGE IND CO LTD
Filing Date
2026-04-08
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Traditional wastewater purification devices have a fixed planar structure for the adsorbent support layer, which cannot effectively guide, block, or disperse wastewater, resulting in vertical discharge and short-circuiting. The contact time between wastewater and adsorbent is short, the utilization rate of adsorbent is low, and it is difficult to fully retain soluble phosphates.

Method used

A deep purification device for phosphoric acid wastewater based on an adsorption-regeneration structure is adopted. Through the design of the baffle structure, a convex stepped purification path with a high center and low edges is formed. Combined with the differentiated pore size design of the annular plate filter and the vertical filter plate, the wastewater retention time is extended and the contact area is increased. The morphological switching is used to achieve directional sludge accumulation and backwashing functions.

Benefits of technology

It significantly improves the removal rate of soluble phosphates and suspended solids, avoids short-circuiting and channeling phenomena, enhances adsorbent utilization, and thoroughly cleans the adsorbent through the backwashing process, ensuring unobstructed purification paths and reducing material costs and maintenance workload.

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Abstract

This invention relates to the field of industrial wastewater regeneration and treatment technology, and discloses a deep purification device for phosphoric acid wastewater based on an adsorption-regeneration structure. The device includes a placement section comprising a tank. A support base is fixedly installed at the bottom of the tank, and a connecting pipe is fixedly connected to the bottom of the tank. The other end of the connecting pipe is fixedly connected to an RO membrane tank. This deep purification device for phosphoric acid wastewater based on an adsorption-regeneration structure effectively solves the problem in existing technologies where the adsorbent support layer of traditional wastewater purification devices has a fixed planar structure. This flat surface cannot effectively guide, impede, or disperse the falling wastewater, causing the wastewater to naturally choose the path of least resistance and fall vertically under the influence of gravitational potential energy. This easily leads to vertical discharge, short flow, a short wastewater purification path, short contact time between wastewater and adsorbent, low adsorbent utilization, and difficulty in fully retaining soluble phosphates.
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