An apparatus for electrochemically slow-releasing sulfate radicals in wastewater treatment

By electrochemically controlling the release rate of barium ions and combining barium hydroxide as the barium source substance, the secondary pollution and sulfate scaling problems caused by inaccurate barium ion dosing in traditional precipitation methods are solved, and efficient sulfate removal and barium ion recovery are achieved.

CN120117792BActive Publication Date: 2025-08-01GUANGZHOU MAIYUAN TECH CO LTD
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Patent Information

Application Number
CN202510584659.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-08
Publication Date
2025-08-01
Estimated Expiration
2045-05-08

AI Technical Summary

Technical Problem

The prior art is difficult to accurately control the amount of barium ions, resulting in secondary contamination and increased treatment costs due to residual barium ions, and traditional precipitation methods cannot effectively avoid sulfate scaling.

Method used

The electrochemical control method is adopted to detect the concentration of sulfate ions in the water through the sulfate detection unit, and the electrode assembly releases barium ions and reacts with the sulfate ions to form barium sulfate precipitation. Combining barium hydroxide as the barium source substance, the sustained release and recovery of barium ions are achieved to avoid excessive barium ions.

Benefits of technology

Accurate control of barium ions is achieved, secondary pollution and sludge amount is reduced, treatment costs are reduced, and sulfate scaling is effectively prevented.

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Abstract

The present invention relates to a device for electro-slowly releasing sulfate radicals in wastewater removal, which comprises a sulfate radical precipitation unit and a precipitation removal unit connected in sequence, and a sulfate radical detection unit arranged on the upstream pipeline communicating with the water inlet of the sulfate radical precipitation unit; the sulfate radical detection unit is used for detecting the concentration of sulfate ions contained in the raw water before entering the sulfate radical precipitation unit; the sulfate radical precipitation unit is used for releasing barium ions to the raw water according to the detected sulfate ion concentration, so that the barium ions react with the sulfate ions to generate barium sulfate, and the sulfate radical precipitation product water containing barium sulfate is obtained; the precipitation removal unit is used for removing the barium sulfate contained in the sulfate radical precipitation product water to obtain the precipitation removal product water. The present invention can accurately control the release rate of barium ions according to the concentration of sulfate radicals in the water body, and can recover the excessive barium ions in the water, overcoming the secondary pollution caused by the inability to accurately control the dosage of barium ions in the traditional precipitation method, and reducing the amount of sludge generated at the same time.
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