Combined biological filler

• Main Authors: YANG ZHIQIANG, GE HAIJIE
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The utility model discloses a combined biological filler which comprises an inner cylinder, an outer cylinder and a plurality of insertion plates, the inner cylinder is coaxially arranged in the outer cylinder, a gap is reserved between the inner cylinder and the outer cylinder, and at least one connecting piece is connected between the inner cylinder and the outer cylinder; a plurality of first inserting grooves for fixing the inserting plates are formed in the outer wall of the inner cylinder in the circumferential direction at intervals, and the first inserting grooves extend to the top ends in the axial direction to penetrate through the top face of the inner cylinder; second inserting grooves for fixing the inserting plates are formed in the positions, corresponding to the first inserting grooves, of the inner wall of the outer barrel, and the second inserting grooves axially extend to the top ends of the second inserting grooves to penetrate through the top face of the outer barrel; the multiple inserti