Retrofit Of Inge’s Ultrafiltration System

With “TORAYFIL” UF Modules

Industry: Paper
Date : April/May-2023
Capacity: 7MLD

Project Background

  • A leading player in the paper industry, has been a pioneer in utilizing 100% deinked wood-free recycled furnish. The company offers high-quality paper products to both domestic and international markets.

  • A prominent industrial facility facing critical operational challenges with its newly installed Inge’s UF system. The primary issues revolved around turbidity loss and elevated SDI levels caused by fiber breakage due to that unable to meet sustainable industry goals, leading to frequent membrane choking in their RO system.

  • To address these challenges and optimize their water treatment processes, the end user made the decision to replace their current UF system with “TORAYFIL” UF technology, driven by its advantages, like:

  • Exceptional physical strength and durability

  • High resistance to chemicals

  • Compact footprint

  • Reduced capital expenditure

Challenge

Fiber Breakage:

The existing UF system faced persistent issues with fiber breakage within a year of operation. This not only increased the frequency of Cleaning in Place (CIP) procedures but also compromised system reliability and raised concerns about water quality.

Fiber Breakage:

Elevated SDI levels were a common occurrence, leading to fouling of the RO membrane.

This necessitated extra maintenance and operational expenses.

High Inorganic Load

Average feed suspended & Inorganic load is very resulting into failure of Inge’s In-out mechanism

TSS <50

Turbidity <50

COD <350

Solution

  • Paper Industries made the strategic choice to upgrade their UF system
    by implementing “TORAYFIL” UF technology(Out-in)

  • This comprehensive solution involved the replacement of piping and operational
    logic tailored to Toray UF

Inge
(Previous)		 Toray
(New system)
Plant capacity 7 MLD 7 MLD
No. of Train 2 Nos Train -1
Model Dizzer XL HFUGB2315 AN
Surface area 80 m2 75m2
Qty 60 Nos 50 Nos
MOC PES PVDF
Nominal pore size 0.02 micron 0.01 micron
Mode of operation IN – Out Out – In
Average CIP Frequency 15-20 days 25-35 day
Daily chemical maintenance (TMC)y NaOCl / NaOH / HCl NaOCl
Average recovery 88%

Result

After replacing the former Inge UF system with the “TORAYFIL” UF solution, Paper industries achieved improvements like:

  • Zero Fiber Breakage till date

  • Steady Turbidity Levels

  • Reduced SDI Levels

  • Enhanced Operational Efficiency

  • Lower Operating Costs