A system for treating sulfur-containing wastewater

By using an anaerobic reactor and a hydrogen sulfide removal reactor, sulfides in sulfur-containing wastewater are converted into H2S and elemental sulfur is recovered, solving the problems of high cost and pollution in traditional methods and achieving efficient, low-cost and environmentally friendly sulfur resource recovery.

CN224337368UActive Publication Date: 2026-06-09SHANDONG HAIJINGTIAN ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG HAIJINGTIAN ENVIRONMENTAL PROTECTION TECH CO LTD
Filing Date
2025-06-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Traditional methods for treating sulfur-containing wastewater suffer from high reagent costs, large sludge production, inability to recover sulfur resources, and high energy consumption. Furthermore, aerobic biological oxidation methods may lead to secondary pollution.

Method used

An anaerobic reactor and a hydrogen sulfide removal reactor are used. Anaerobic sulfate-reducing bacteria are used to convert sulfides in wastewater into H2S. Then, H2S is converted into elemental sulfur through biological oxidation technology and recovered. The system includes an anaerobic reactor, a hydrogen sulfide removal reactor, and a sulfur collection tank.

Benefits of technology

It achieves efficient and low-cost conversion of sulfides into H2S and recovery of elemental sulfur, while being environmentally friendly and having high removal and recovery rates.

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Abstract

This utility model belongs to the field of wastewater treatment, and particularly relates to a sulfur-containing wastewater treatment system, comprising: an anaerobic reactor, a hydrogen sulfide removal reactor, and a sulfur collection tank; the anaerobic reactor has an inlet at the bottom and an outlet at the top, and is filled with packing material loaded with anaerobic sulfate-reducing bacteria; the hydrogen sulfide removal reactor has an ejector installed at the top, and the inlet of the ejector is connected to the outlet of the anaerobic reactor; the hydrogen sulfide removal reactor has an overflow outlet at the top, and is filled with hydrogen sulfide-reducing bacteria biological filter media; the sulfur collection tank has a sulfur recovery tank at the top, and the overflow outlet of the hydrogen sulfide removal reactor is connected to the upper part of the sulfur recovery tank via a pipeline; the sulfur collection tank has a reflux outlet at the bottom, which is connected back to the hydrogen sulfide removal reactor. This system can directionally convert sulfides in wastewater into H2S and recover H2S resources, combining high efficiency, low cost, and environmental friendliness.
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