一种快速启动单质硫驱动的自养反硝化颗粒污泥系统的方法
By employing a four-stage influent control and electronic donor conversion method, an autotrophic denitrification granular sludge system was rapidly constructed, solving the problem of long start-up time in the sulfur autotrophic denitrification process and achieving efficient nitrogen removal and low-cost wastewater treatment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- DALIAN UNIV OF TECH
- Filing Date
- 2024-11-11
- Publication Date
- 2026-07-17
AI Technical Summary
Existing sulfur autotrophic denitrification processes have long start-up times, which limits biomass concentration and nitrogen removal capacity. Furthermore, the utilization efficiency of elemental sulfur as an electron donor and its denitrification capacity are insufficient.
A method for rapidly enriching sulfur-oxidizing bacteria was adopted. Through four stages of influent control, thiosulfate was first used as an electron donor, and then gradually converted into elemental sulfur. Combined with anaerobic granular sludge inoculation and light-proof conditions, an autotrophic denitrifying granular sludge system was constructed.
The system achieved the start-up of a highly efficient sulfur-autotrophic denitrification granular sludge system within 60 days, shortening the start-up time, increasing biomass concentration and denitrification performance, and reducing environmental risks and costs.
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Figure CN119191552B_ABST