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Automated Backwash Cloth Media Disc Filter with Differential Pressure Control
Applications
Upgrading existing wastewater treatment plants from China's Class 1B discharge standard to Class 1A
Industrial reclaimed-water systems, including circulating cooling water for steel plants and power plants
Reuse of reclaimed water for municipal non-potable applications
Process-water treatment in the papermaking, textile dyeing, and printing industries
Water treatment for aquaculture and similar applications
Working Principle
The fully submerged fiber cloth disc filter consists of a central drum, filter discs, backwashing system, and associated electrical control system. Filter discs are installed around the central drum and communicate with its interior through openings.
Raw water passes through the specially designed fiber cloth filter medium (filtration rating as fine as 10 μm) and flows into the central drum for discharge. As suspended solids accumulate on the filter cloth surface, differential pressure increases and flow rate decreases.
When solids reach specified levels and water level rises to preset values, the automated backwashing system activates. Solids are removed by suction backwashing and discharged from the system. The filter discs rotate during cleaning until the entire surface is cleaned, then return to stationary filtration mode.
Product Advantages
Low installed power: Gravity-driven filtration requires no external power for the filtration process
Compact footprint: Vertical space utilization with compact auxiliary equipment arrangement
Low head loss: Normal design head loss approximately 300 mm
Fully automatic operation: Continuous operation with filtration maintained during backwashing cycles
Low operating costs: Minimal energy consumption with efficient localized backwashing using filtered water
Stable effluent quality: Achieves effluent suspended solids concentration of SS < 5 mg/L
High shock load resistance: Tolerates influent suspended solids up to SS ≤ 50 mg/L
Filter Cloth Structure and Performance
The filter cloth features a polyester fiber base fabric with polyamide surface fibers. Fiber density and length are selected based on filtration medium characteristics to suit different water-quality conditions.
Surface pile height ranges between 10-15 mm, providing high filtration flux of 15-20 m³/(m²·h). Uniform fiber distribution creates a dense, floc-like filtration layer with rating of approximately 5-8 μm and effective depth-filtration layer of approximately 2 mm.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2001
Total Annual:
40000000-70000000
Employee Number:
80~100
Ecer Certification:
Verified Supplier
Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres... Nanjing Lanjiang is a professional manufacturer integrating the design, research and development, production, and sales of wastewater treatment equipment. The company is located at No.18 Xinyu Road, Hengliang Street, Liuhe District, in the northern suburbs of Nanjing (adjacent to the Ningtong Expres...