Microbial induced sedimentation based industrial solid waste backfill pit anti-seepage treatment method and system

By using microbial-induced precipitation technology to generate calcium carbonate precipitate in rock fissures, the problems of high cost and easy damage of existing seepage prevention treatments are solved, achieving low-cost and environmentally friendly seepage prevention and reducing environmental risks.

CN122215367APending Publication Date: 2026-06-16生态环境部固体废物与化学品管理技术中心 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
生态环境部固体废物与化学品管理技术中心
Filing Date
2026-04-16
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing seepage prevention methods are costly and easily damaged, making it difficult to effectively prevent leakage at the bottom of industrial solid waste landfills. This poses a risk of environmental pollution, especially in rock backfill pits that do not meet or are close to the saturation permeability requirements.

⚗Method used

By employing microbial induced precipitation technology, microbial agents and calcium ion-containing cementing solutions are injected into rock fissures to generate calcium carbonate precipitates, which fill pores and cracks, forming an impermeable and solidified body layer and enhancing the impermeability of the bottom of the backfill pit.

🎯Benefits of technology

It achieves comprehensive seepage prevention at low cost and in an environmentally friendly manner, reduces environmental risks, and also has the function of solidifying heavy metal pollutants. It is simple to operate and flexible and adjustable.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of industrial solid waste backfill pit anti-seepage treatment method and system based on microbial induced precipitation, system includes storage tank I, storage tank II, backfill pit and several injection wells, microbial inoculum in storage tank I and cementing solution containing calcium ions in storage tank II are proportionally injected into injection well;Injection fluid enters the rock fracture in the bottom of backfill pit through injection well, and generates cementing body at rock fracture;After cementing body completely solidifies, the permeability of the rock at the bottom of backfill pit is judged, until the permeability coefficient reaches the anti-seepage requirement, stop injecting injection well.The present application synchronously injects microbial inoculum and cementing solution into every corner of bedrock fracture, realizes comprehensive anti-seepage from inside to outside through the metabolic activity of microorganism, and improves the anti-seepage strength of the bottom of backfill pit.
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