Continuous sludge pre-drying method and system thereof

By using a continuous sludge pre-drying system and adsorbent treatment, the problems of low sludge pre-drying efficiency and high cost were solved, achieving rapid and stable sludge dewatering and reducing energy consumption and reagent costs.

CN120081573BActive Publication Date: 2026-06-09WUHAN TIANYUAN GROUP CO LTD
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Patent Information

Application Number
CN202510275757.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-03-10
Publication Date
2026-06-09
Estimated Expiration
2045-03-10

AI Technical Summary

Technical Problem

Existing sludge pre-drying technologies suffer from low drying efficiency, high cost, and unstable results. In particular, mechanical dewatering processes involve high power consumption, high reagent costs, and complex operation.

Method used

A continuous sludge pre-drying system is adopted, including a sludge storage device, a sludge cutting device, a primary mixing device, a pre-drying device, and a secondary mixing device. Combined with acid leaching and pyrolysis activation treatment of the adsorbent, the system utilizes a multi-stage mixing and cutting process to enhance the hydrophilicity and adsorption capacity of the sludge, reduce sludge stickiness, and improve dewatering efficiency.

Benefits of technology

It enables continuous and rapid pre-drying of sludge, reduces energy consumption and reagent costs, improves sludge dewatering effect, reduces the possibility of secondary sludge agglomeration, and enhances the stability and efficiency of sludge drying.

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Abstract

The application provides a continuous sludge pre-drying method and system, and relates to the technical field of sludge treatment.The application provides a continuous sludge pre-drying system, which comprises sequentially connected sludge storage devices, sludge slitting devices, primary mixing devices, pre-drying devices and secondary mixing devices.The application also provides a pre-drying method, which comprises the following steps: conveying sludge in the sludge storage devices to the sludge slitting devices to slit the sludge; adding adsorbents to the slit sludge to obtain mixed sludge, and conveying the mixed sludge to the primary mixing devices to perform primary crushing and mixing; outputting the sludge discharged from the primary mixing devices to the pre-drying devices, outputting the pre-dried sludge to the secondary mixing devices to perform secondary crushing and mixing, and obtaining pre-dried sludge.The system and method provided by the application can realize short sludge pre-drying cycle, high sludge drying efficiency and stable sludge drying effect.
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