Long-chain dibasic acid microbial fermentation wastewater resource comprehensive utilization method

By combining A/O and MBR processes, along with reverse osmosis, nanofiltration, and mechanical vapor recompression technologies, the problems of high reagent costs and resource waste in the treatment of long-chain dicarboxylic acid microbial fermentation wastewater have been solved, achieving efficient resource utilization and cost control of wastewater.

CN119430561BActive Publication Date: 2026-07-24NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
6 Cites 0 Cited by

Patent Information

Application Number
CN202411796159.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-12-09
Publication Date
2026-07-24
Estimated Expiration
2044-12-09

AI Technical Summary

Technical Problem

Existing methods for treating wastewater from microbial fermentation of long-chain dicarboxylic acids are characterized by high reagent costs, significant resource waste, and high wastewater treatment costs, while failing to effectively recover sodium sulfate and water resources.

Method used

The process combines A/O and MBR technologies, using reverse osmosis, nanofiltration, and mechanical vapor recompression. First, reverse osmosis concentration is performed, followed by nanofiltration separation. Combined with biochemical methods, organic pollutants are removed, and sodium sulfate crystals are recovered.

Benefits of technology

It reduced wastewater treatment costs, improved resource utilization, reduced reagent costs, enhanced system stability and efficiency, and achieved sodium sulfate recovery and effective water resource utilization.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The application discloses a long-chain dibasic acid microbial fermentation wastewater resource comprehensive utilization method, and belongs to the wastewater treatment and utilization field of resources and environment. It comprises sequentially carried-out adjusting step, neutralizing step, coagulation and sedimentation step, hydrolytic acidification step, A / O process treatment step, submerged MBR process treatment step, reverse osmosis treatment step, hard removal treatment step, nanofiltration treatment step, mechanical steam recompression treatment step and the like. The application adopts the combination of chemical treatment process, biochemical treatment process, physical membrane separation and evaporation process and the reasonable setting of steps, improves the quality of wastewater reuse water and the purity of sodium sulphate, reduces the risk of membrane system and evaporation system scaling, enhances the stability and efficiency of system operation, and realizes the comprehensive resource utilization of long-chain dibasic acid microbial fermentation wastewater.
Need to check novelty before this filing date? Find Prior Art