System and method for improving acid production efficiency of organic wastewater hydrolysis acidification

By introducing methanogenic bacteria to inhibit and adjust pH in the hydrolysis acidification tank, combined with air stripping circulation and nitrogen charging, the problem of generating inferior carbon sources during the hydrolysis acidification process of organic wastewater was solved, achieving efficient acid production and the provision of high-quality carbon sources, thus improving the efficiency of sewage and wastewater treatment.

CN117228829BActive Publication Date: 2026-08-25XIAN TPRI WATER & ENVIRONMENTAL PROTECTION +2
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Patent Information

Application Number
CN202311437366.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-10-31
Publication Date
2026-08-25
Estimated Expiration
2043-10-31

AI Technical Summary

Technical Problem

In existing technologies, the inferior carbon sources generated during the hydrolysis and acidification of organic wastewater increase transportation costs and reduce the denitrification efficiency of wastewater treatment. The method of improving the resource utilization rate of organic wastewater as a carbon source is still immature.

Method used

By introducing a methanogen inhibitor and an alkali addition device into the hydrolysis acidification tank, and utilizing methanogen inhibitors and pH adjustment, combined with an air stripper and nitrogen injection, the hydrolysis acidification reaction is ensured to stop methane generation during the acid production stage, thereby increasing the accumulation of small molecule organic acids.

Benefits of technology

It significantly improves the efficiency of acid production from the hydrolysis and acidification of organic wastewater, increasing the acid production rate by about 5 times, providing a high-quality carbon source, saving energy and improving the efficiency of sewage and wastewater treatment.

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Abstract

The application discloses a system and method for improving acid production efficiency of organic wastewater hydrolysis acidification, comprising a methanogen inhibition tank, a seeding sludge feeding pump, a hydrolysis acidification tank, an alkali adding device, an organic wastewater inlet pipeline and a temperature controller; an inhibition tank outlet on the bottom side of the methanogen inhibition tank is connected with a seeding sludge inlet on the top side of the hydrolysis acidification tank through the seeding sludge feeding pump; a dosing opening and an exhaust opening are arranged on the top of the hydrolysis acidification tank; the alkali adding device is connected with the dosing opening; the organic wastewater inlet pipeline is connected with a water inlet on the bottom of the hydrolysis acidification tank through the temperature controller; the system and method have higher acid production efficiency, and are not prone to produce poor carbon sources.
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