A biogas slurry ammonia-nitrogen dynamic mixed acid film absorption resource utilization method for liquid fertilizer base liquid preparation
By using silicon carbide membrane pretreatment and multi-parameter dynamic acid control, the problems of low membrane flux and unstable ammonia nitrogen recovery in the treatment of kitchen waste biogas slurry have been solved, realizing efficient solid-liquid separation and ammonia nitrogen resource utilization of biogas slurry, and ensuring stable production and high added value of liquid fertilizer base liquid.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANGHAI LIMING RESOURCE REUSE
- Filing Date
- 2026-05-27
- Publication Date
- 2026-07-17
AI Technical Summary
In existing kitchen waste biogas slurry treatment, traditional organic membranes have low flux and poor durability. The absorbent buffer capacity is insufficient during ammonia nitrogen recovery, resulting in complex operation, high cost, and uncontrollable composition of recovered products.
By replacing traditional organic membranes with silicon carbide membrane pretreatment, and combining a multi-parameter dynamic acid matching control strategy and a state-triggered linkage maintenance mechanism, solid-liquid separation and ammonia nitrogen resource utilization of biogas slurry are achieved.
It has achieved long-term stable operation of biogas slurry, reduced the risk of membrane module fouling, reduced pesticide consumption, improved the controllability of product composition and the level of system automation, and ensured the quality consistency of liquid fertilizer base liquid.
Smart Images
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