Industrial Skid Mounted Ultrafiltration Equipment for Water Treatment

Industrial Skid Mounted Ultrafiltration Equipment for Water Treatment

Ultrafiltration equipment is a mainstream membrane separation facility widely used for industrial raw water purification and wastewater recycling treatment. As a stable and reliable liquid filter, this integrated skid-mounted UF device intercepts suspended solids, colloids, bacteria and macromolecular organic pollutants while retaining beneficial mineral ingredients in water body. This paper systematically elaborates the structural composition, working mechanism, standard technical indicators, production quality control and practical application scenarios of our core listed Ultrafiltration equipment, helping global buyers fully grasp the performance advantages and operation specifications of this water filtration device.

1. Product Introduction

Our officially launched water processing product on the official website is the integrated skid-mounted Ultrafiltration equipment, an all-in-one water filtration unit assembled with hollow fiber membrane modules, stainless steel frame structure, feed pump set, automatic backwash pipeline, chemical cleaning pipeline and PLC electric control cabinet. The whole set of equipment is pre-installed and debugged in the factory, delivered as an integral skid structure, which greatly shortens the customer’s on-site pipeline layout, installation construction and system commissioning cycle.

The overall framework of the ultrafiltration equipment adopts 304 stainless steel welded frame, with good rust resistance and structural stability, adapting to indoor production workshops, outdoor wastewater stations and other complex placement environments. The core filter component is PVDF hollow fiber ultrafiltration membrane elements arranged in parallel. Multiple membrane columns are centrally distributed on the skid platform, matched with complete valve components, pressure gauges and flow monitoring parts to realize real-time monitoring of operating pressure and water yield status during operation.

The built-in automatic control system supports fully unattended operation. The system will automatically trigger backwashing according to the set time or pressure difference value to flush the pollutants attached to the membrane surface; when the membrane flux decays obviously, operators can start the matched CIP cleaning pipeline to carry out regular chemical cleaning, effectively prolonging the service life of the membrane components inside this Ultrafiltration equipment.

Different from scattered purchased membrane components and separately matched pipeline accessories, our finished ultrafiltration equipment realizes standardized integrated design. All wetted contact parts are made of anti-corrosion materials to avoid secondary pollution of water quality. It is the standard pretreatment filtration equipment for industrial pure water preparation and factory wastewater recycling projects, and can cooperate with subsequent deep purification processes to form a complete water treatment flow.

2. Working Principle

The operation of this skid-mounted ultrafiltration equipment follows the physical sieving principle of pressure-driven membrane separation. After the raw water is boosted by the feed pump to the rated working pressure of 1.0–5.0 bar, the raw water flows along the outer wall of the hollow fiber membrane in a cross-flow state.

Water molecules and small molecular dissolved salts smoothly pass through the membrane micropores to form qualified permeate clean water and flow out from the permeate pipeline. Suspended particles, colloids, microbial bacteria and macromolecular organic matter larger than the membrane pore size are trapped on the outer surface of the membrane fiber and discharged along with the concentrated water. The cross-flow scouring effect of the raw water flow can slow down the accumulation of pollutants on the membrane surface and maintain stable water production efficiency for a long time.

Two core automatic maintenance procedures are embedded in the equipment control program: regular backwashing and manual chemical cleaning. Backwashing uses the produced clean water to reversely penetrate the membrane layer to peel off surface dirt, which is the daily automatic maintenance method of the equipment. When long-term operation causes organic biofilm or inorganic scale to deposit on the membrane, the supporting CIP pipeline is used to circulate acid and alkali cleaning agents to restore the original flux of the membrane modules inside the ultrafiltration equipment. The whole operation logic is solidified in the PLC program, and staff only need to view the operating data through the control panel without frequent manual intervention.

3. Technical Parameters 

3.1 Core Membrane Parameters

Membrane material: Food grade PVDF hollow fiber membrane

Common MWCO specification: 50kDa / 100kDa

Single membrane module area: 40 m² per standard membrane column

Effective pore size: 0.01~0.1 μm

Allowable operating temperature: 5 ~ 45℃

Adaptable pH range: Continuous operation pH 2–11; cleaning tolerance pH 1–13

Design operating flux: 30 ~ 80 LMH (adjustable according to raw water quality)

3.2 Whole Machine Operation Parameters

Working pressure: Optimal stable pressure 1.5 ~ 3.0 bar

System water recovery rate: 85% ~ 92%

Permeate water turbidity: Stably lower than 0.1 NTU

Bacteria removal efficiency: ≥99.99%

Outlet water SDI value: ≤3, meeting the inlet water standard for subsequent advanced water treatment

3.3 Equipment Configuration Parameters

Main frame material: 304 stainless steel integrated skid frame

Control mode: PLC + local electric control box automatic control

Automatic backwash cycle: Adjustable from 15 minutes to 60 minutes

Standard CIP cleaning cycle: 2 ~ 6 months based on actual water inlet pollution degree

4. Product Quality Standard & Manufacturing Quality

Each set of our ultrafiltration equipment implements strict full-process quality inspection during production. Before assembly, each batch of PVDF hollow fiber membrane modules will pass the bubble point integrity test to screen out defective products such as fiber breakage and pore leakage, to ensure the stable interception performance of the core filter material.

The stainless steel frame, pipeline welding and component assembly are completed by professional process workers. After the overall assembly is finished, each equipment will complete the Factory Acceptance Test (FAT) in the factory workshop, simulate the actual water intake state to test the water output, pressure change and automatic program action logic, and deliver to customers after all indexes are qualified.

All materials in contact with water comply with NSF61 drinking water material safety standard and CE product safety certification. Under standardized operation and regular maintenance, the service life of the built-in membrane components of the ultrafiltration equipment can reach 5–8 years, effectively reducing the later replacement cost for enterprise users.

5. Application Fields

This integrated ultrafiltration equipment is widely applicable to multiple industrial water treatment scenarios:

Raw water pretreatment for factory pure water production, removing colloidal impurities to protect subsequent deep purification equipment;

Tertiary advanced treatment of industrial biochemical wastewater to realize wastewater reuse for factory flushing, greening irrigation and cooling water replenishment;

Purification treatment of surface water such as river water and lake water for factory self-provided water supply system;

Filtration and impurity removal in food processing, beverage production and other production water systems to remove microorganisms in water.

FAQ 

Q1: Can this ultrafiltration equipment remove salt substances and reduce water TDS value?

A: This ultrafiltration equipment only intercepts particulate pollutants and microorganisms, dissolved salt ions can pass through the membrane smoothly. If you need desalination treatment, this UF equipment can be used as pretreatment matched with reverse osmosis equipment.

Q2: How long is the normal service life of the membrane inside the ultrafiltration equipment?

A: Under normal operating conditions with regular backwashing and periodic chemical cleaning, the original PVDF hollow fiber membrane can work stably for 5 to 8 years. Membrane replacement is required when the water production flux cannot be restored to the normal level after complete chemical cleaning.

Q3: Does the skid-mounted ultrafiltration equipment need complicated on-site installation work?

A: The whole machine is an integrated skid structure after factory assembly and debugging. Customers only need to connect the raw water pipeline, produced water pipeline, drain pipeline and power supply on site, which greatly saves installation time and construction cost.

Q4: What problems will occur if the ultrafiltration equipment is not cleaned for a long time?

A: Long-term uncleaned membrane surface will accumulate dirt and biofilm, resulting in continuous decline of water output flux, rising operating pressure difference, and even abnormal deterioration of outlet water turbidity, affecting the stable operation of the whole water treatment system.

Q5: What kind of raw water is the ultrafiltration equipment suitable for handling?

A: It is applicable to conventional surface water, well water, and biochemical effluent of general industrial wastewater. For wastewater with high oil content and ultra-high suspended solids, it is necessary to add pre-filter devices at the front end to protect the UF membrane.

Q6: Does the equipment support remote operation and data viewing?

A: The standard configuration is local PLC automatic control; remote monitoring modules can be selected as customized accessories to realize remote real-time viewing of equipment operating parameters and fault alarm feedback.

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