High Efficient Pipeline Ultrafiltration Machine for Industrial Pipeline Water Treatment

1. Product Introduction of Pipeline Ultrafiltration Machine

Different from traditional independent vertical and horizontal ultrafiltration equipment that needs independent equipment foundation and water tank matching, pipeline ultrafiltration machine adopts a straight-through pipeline structural design. The ultrafiltration membrane assembly is sealed inside a pressure pipeline shell, and the whole equipment is directly connected to the original water delivery pipeline through flange interfaces, realizing online synchronous filtration during fluid transportation. The whole machine is composed of pipeline membrane housing, PVDF hollow fiber membrane component, built-in backwash pipeline branch, online pressure monitoring transmitter, automatic sewage discharge valve and local control box. It can be installed in horizontal or vertical pipeline directions with strong layout adaptability.

For centralized workshop circulating water pipeline purification, users can use our standard pipeline ultrafiltration machine matched with assembled Industrial Skid Mounted Ultrafiltration Equipment to build front-end coarse filtration + pipeline fine filtration graded treatment system. For chemical, printing and dyeing heavily polluted pipeline wastewater transportation treatment, wear-resistant and anti-clogging Tubular Ultrafiltration Membrane can be configured inside the pipeline shell to adapt to high suspended matter fluid delivery filtration. For small factory pipeline tap water purification and process water upgrading transformation projects, the compact Integrated Ultrafiltration Water Purification Equipment combined with short pipeline UF machine can quickly complete old water system reconstruction with small engineering volume. For large continuous pipeline water supply systems in industrial parks, the intelligent linkage Automatic Ultrafiltration Machine can work with multiple groups of pipeline ultrafiltration machines to realize unified program management of the whole pipeline network filtration system.

The pipeline shell is made of 304 stainless steel as standard, and 316 stainless steel or anti-corruption lining is optional for corrosive medium pipelines. The built-in modified PVDF hollow fiber membrane has excellent anti-fouling and chemical cleaning resistance. The control part supports local manual operation and remote signal docking, automatically completing pipeline water production, timing backwashing and dirt discharge without shutting down the main pipeline under normal working conditions. It greatly avoids the water supply interruption problem caused by the shutdown maintenance of traditional separate ultrafiltration equipment.

2. Working Principle of Pipeline Ultrafiltration Machine

Pipeline ultrafiltration machine relies on the pressure difference formed by the fluid flow in the original pipeline as the filtration power, adopting cross-flow pipeline ultrafiltration mode, which is divided into pipeline normal filtration, online backwashing and periodic chemical cleaning three operating states.

2.1 Normal Pipeline Filtration State

When the industrial medium flows through the pipeline ultrafiltration shell along the main pipeline, part of the fluid penetrates the hollow fiber membrane wall under pipeline pressure. Water molecules and tiny soluble substances pass through the membrane to form qualified permeate water and flow into the production water pipeline. Suspended solids, colloids, microorganisms and macromolecular impurities are trapped on the inner wall of the hollow fiber membrane. Most of the raw liquid flows forward along the original pipeline to form cross-flow scouring flow, which continuously washes the membrane surface to reduce pollutant accumulation.

2.2 Online Automatic Backwashing State

When the pipeline pressure difference rises to the preset threshold, the control system opens the backwash branch pipeline automatically, uses the clean produced water for reverse flushing of the membrane inner wall, peels off the intercepted dirt and discharges the dirt through the sewage pipeline. The whole backwashing process will not cut off the main pipeline fluid transportation, realizing non-stop online cleaning.

2.3 Regular Pipeline Chemical Circulation Cleaning

After long-term continuous pipeline operation, the system can be connected to the dosing tank through the reserved chemical cleaning interface. Acid and alkali cleaning agents are injected into the pipeline ultrafiltration cavity for circulating soaking cleaning to decompose biological slime, organic dirt and inorganic scale, restore the original flux of the membrane component, and ensure the long-term stable filtration efficiency of the pipeline system.

3. Universal Technical Parameters of Pipeline Ultrafiltration Machine 

Core Membrane & Shell Parameters

• Membrane material: Modified antifouling PVDF hollow fiber ultrafiltration membrane

• Membrane aperture: 0.01~0.1 μm; MWCO optional: 50kDa / 100kDa

• Pipeline shell material: Standard 304 stainless steel, optional 316L stainless steel

• Nominal pipeline caliber: DN50~DN300 customizable according to original pipeline size

System Operating Index

• Available pipeline working pressure: 0.1MPa ~ 0.4MPa

• Allowable working temperature: 5℃ ~ 45℃; applicable pH: operation 2–11, cleaning 1–13

• Interception rate of suspended solids and bacteria ≥99%; system water recovery rate 78%~88%

• Backwash period: freely adjustable 10~60min; chemical cleaning cycle 1~4 months

Control Configuration

• Control mode: Local PLC control box, support 4-20mA remote signal transmission

• Installation form: horizontal pipeline installation / vertical pipeline installation optional

• Single pipeline processing flow: 1m³/h ~ 200m³/h customized matching

4. Product Quality Assurance System

All pipeline ultrafiltration machines implement ISO9001 quality management system and CE safety certification in the whole production flow.

1. Incoming material inspection: Membrane filaments, stainless steel pipeline shells, valves, pressure sensors and electrical components are sampled and tested before warehousing to block defective raw materials at the source.

2. Sealing & assembly inspection: Membrane sealing pouring, pipeline flange assembly, internal pipeline layout are fully inspected by professional quality inspectors with traceable records for each process.

3. Factory overall test: Each finished pipeline ultrafiltration machine must pass hydraulic pressure tightness test, pipeline flow simulation test and automatic control program debugging before delivery to eliminate hidden dangers during actual pipeline operation.

4. Export dedicated packaging: Adopt sealed moisture-proof, shock-proof and rust-proof packaging to adapt to long-distance ocean transportation for overseas orders.

With standardized operation and maintenance, the service life of built-in PVDF ultrafiltration membrane reaches 5–8 years, and the stainless steel pipeline shell can run stably for more than 10 years. We provide global spare parts supply and permanent free remote technical guidance for all customers purchasing our pipeline ultrafiltration machines.

5. Main Application Fields of Pipeline Ultrafiltration Machine

1. Factory circulating cooling water pipeline online filtration: Reduce pipeline dirt and heat exchanger scaling, improve cooling efficiency

2. Municipal reclaimed water pipeline transportation purification: Purify reclaimed water in the delivery pipeline to reach reuse standard for greening and road washing

3. Food & beverage production pipeline process water purification: Real-time purification of raw water in conveying pipelines to ensure water quality stability of production line

4. Electroplating factory wastewater pipeline pretreatment: Intercept solid impurities in wastewater pipelines to protect subsequent treatment equipment

5. Central air conditioning water system pipeline filtration: Remove algae and suspended matter in circulating water to prevent pipeline blockage

6. Mining mine water pipeline recovery treatment: Purify mine water during pipeline transportation for industrial recycling

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