A seaweed farm water quality purifying biofilm reactor

By combining the inner and outer cylinder structures with the spiral guide plate and serrated impeller, the problems of clogging and low gas-liquid mass transfer efficiency in the seaweed biofilm reactor are solved, achieving efficient self-cleaning and low-energy water purification.

CN122276967APending Publication Date: 2026-06-26SHANDONG MARINE RESOURCE AND ENVIRONMENT RESEARCH INSTITUTE (SHANDONG MARINE ENVIRONMENTAL MONITORING CENTER SHANDONG AQUATIC PRODUCTS QUALITY INSPECTION CENTER)
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202610617094.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-07
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing biofilm reactors are prone to clogging in the high-load water quality environment of seaweed farms, have low gas-liquid mass transfer efficiency, and rely on external electric power, resulting in high maintenance costs.

Method used

It adopts an inner and outer cylinder structure, with a spiral guide plate and a serrated impeller between the inner and outer cylinders. It uses fluid kinetic energy to drive the scraper for self-cleaning. Combined with the spiral guide plate and mass transfer through holes, it realizes long-path spiral sedimentation flow and bubble refinement, thereby enhancing the gas-liquid contact surface area and dissolved oxygen transfer efficiency.

Benefits of technology

It effectively prevents biofilm blockage on the inner wall, improves gas-liquid mass transfer efficiency, reduces maintenance frequency and cost, and ensures long-term stable operation of the device.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN122276967A_ABST
    Figure CN122276967A_ABST
Patent Text Reader

Abstract

This invention relates to the field of water environment management and ecological restoration technology, and discloses a biofilm reactor for purifying seaweed farm water quality, including a support frame, an outer cylinder, an inner cylinder, a spiral guide plate, and a self-cleaning component. The inner cylinder is coaxially arranged inside the outer cylinder, and the annular gap between the two is filled with a spiral guide plate containing mass transfer through holes. A closed aeration pipe is provided at the bottom of the inner cylinder. The rising airflow generated by the aeration pipe drives a serrated impeller located inside the inner cylinder to rotate. The serrated impeller drives a scraper to circumferentially scrape along the inner wall of the inner cylinder through a central rotating shaft and a connecting frame. This invention utilizes the fluid kinetic energy generated by the airlift effect to enhance gas-liquid mass transfer by cutting and refining air bubbles at high speed through the serrated impeller without the need for an external motor. At the same time, it drives the scraper to automatically remove aging biofilm and scale from the inner cylinder wall, effectively solving the problems of easy clogging and low dissolved oxygen efficiency of biofilm reactors in seaweed farm water quality environments. It has the advantages of stable operation, maintenance-free operation, and low energy consumption.
Need to check novelty before this filing date? Find Prior Art