Industrial Water & Wastewater

Introduction

Industrial water and wastewater may contain suspended solids, sediment, debris, and other contaminants that affect equipment and water-reuse processes. Fengnuochang provides filtration equipment for wastewater, surface water, cooling water, RO and UF pretreatment, reclaimed water, and water reuse, alongside oil-water separation equipment for selected applications. Micron rating, flow capacity, materials, cleaning methods, and system arrangement can be configured according to water quality, operating conditions, and treatment requirements.

FILTRATION EQUIPMENT FOR WATER TREATMENT

Select filtration technologies for each treatment stage, from coarse protection and suspended‑solids removal to fine particle control and membrane pretreatment.

Automatic Self‑Cleaning Filters
Automatic self‑cleaning filters support continuous filtration of suitable industrial water streams, including high‑flow applications.
Automatic cleaning removes accumulated contaminants from the filter screen with limited interruption to normal filtration, helping reduce frequent manual cleaning and maintenance.
Suitable for selected industrial wastewater, cooling water, circulating water, raw water, and process‑water applications.
Multi‑Media Backwash Filters
Suitable for reducing suspended solids, sediment, and turbidity from raw water, wastewater, and other industrial water streams.
Automatic backwashing helps restore filtration performance and reduce manual media cleaning requirements.
Candle Backwash Filters
Provide enclosed solid‑liquid separation with backwashing capability.
They can be used for selected industrial wastewater, process‑water, and reclaimed‑water applications where suspended solids need to be separated and repeated filter‑element cleaning is required.
Bag Filters
Bag filters provide economical particle removal for compatible wastewater, cooling water, process water, and treated water.
Different filter‑bag materials and filtration ratings can be selected according to water quality, particle characteristics, and downstream filtration requirements.
Cartridge Filters
Provide fine particle control and downstream equipment protection.
Cartridge filters can provide particulate pretreatment before compatible RO, UF, and other membrane systems. Select the cartridge arrangement and retention rating for the feedwater and membrane requirements.
Basket Filters
Basket filters intercept larger particles and debris.
They provide upstream protection for pumps, valves, heat exchangers, pipelines, and finer filtration equipment.

INDUSTRIAL WASTEWATER TREATMENT

Industrial wastewater can contain varying concentrations of suspended solids, sediment, particulate contaminants, and process residues.
Filtration equipment can be used for pretreatment, suspended‑solids reduction, solid‑liquid separation, and downstream equipment protection as part of a broader wastewater‑treatment process.

Continuous Suspended‑Solids Reduction
Automatic Self‑Cleaning / Scraper Filters
Suitable for selected wastewater streams where continuous filtration and reduced manual cleaning are important.
Larger‑Capacity Automatic Filtration
Multi‑Column Backwash Filters
Multi‑column backwash configurations provide automatic particle removal with capacity selected for the water quality and required flow rate.
Intermediate Solid‑Liquid Separation
Candle Backwash / Bag Filters
Provide additional particulate and suspended‑solids separation before subsequent treatment stages.
Select equipment according to wastewater composition, solids loading, particle characteristics, flow rate, and downstream treatment requirements.

MUNICIPAL WASTEWATER FILTRATION

Municipal wastewater treatment can require particle and suspended‑solids control during suitable pretreatment or tertiary filtration stages.

Pretreatment & Tertiary Filtration Support
Self‑Cleaning Filters / Disc Backwash Filters / Cartridge Filters
These filtration technologies can provide particulate control at selected treatment stages, helping reduce residual solids and protect downstream equipment or further treatment processes.
Municipal wastewater treatment may also require biological treatment, chemical treatment, disinfection, or other processes according to wastewater quality and treatment objectives.

RIVER, LAKE & SURFACE WATER TREATMENT

Surface‑water sources can contain sand, sediment, suspended matter, turbidity, and larger particulate impurities.
Upstream filtration can reduce these contaminants before subsequent purification, membrane treatment, or industrial water use.

Sediment & Turbidity Reduction
Shallow Sand Backwash Filters
Shallow sand filters reduce sediment and suspended particles in suitable surface‑water applications.
Multi‑Media Backwash Filters
Provide media filtration for suspended‑solids and turbidity reduction before downstream treatment.
Automatic Backwash Filters
Provide automatic particle interception and cleaning where continuous water filtration is required.

Typical Treatment Concept
River / Lake / Surface Water
↓
Coarse Protection
↓
Sand / Multi‑Media Filtration
↓
Intermediate / Fine Particle Filtration
↓
Further Water Treatment
The actual treatment sequence should be selected according to incoming water quality and required final water quality.

COOLING & CIRCULATING WATER FILTRATION

Cooling and circulating water systems can accumulate suspended solids, sediment, corrosion products, and foreign particles during operation.
These contaminants can affect pumps, heat exchangers, pipelines, valves, nozzles, and other system components.

Brush Self‑Cleaning Filters
Provide automatic screen cleaning during continuous water filtration, helping reduce frequent manual maintenance.
Suction Self‑Cleaning Filters
Use automatic suction cleaning to remove accumulated contaminants from the filter screen while minimizing interruption to normal filtration.
Disc Backwash Filters
Provide automatic particulate interception and backwashing for selected cooling and circulating water applications.

Together, these technologies can support:
Continuous Filtration | Automatic Cleaning | Equipment Protection | Reduced Manual Maintenance

RO & UF PRETREATMENT

Particulate contamination upstream of membrane systems can increase membrane fouling and maintenance requirements.
A properly configured pretreatment system can progressively reduce suspended solids and residual particles before RO or UF.

Upstream Suspended‑Solids Reduction
Multi‑Media Backwash Filters
Reduce sediment, turbidity, and suspended‑solids loading before finer filtration stages.
Intermediate Filtration
Bag Filters
Provide flexible particle interception before cartridge or membrane filtration.
Fine Particle Control & Membrane Protection
Cartridge Filters
Provide finer particle control immediately before suitable downstream membrane‑treatment stages.

Typical Membrane Pretreatment Concept
Raw / Process Water
↓
Multi‑Media Filtration
↓
Bag Filtration
↓
Cartridge Filtration
↓
UF / RO
↓
Further Treatment
The actual pretreatment sequence and filtration ratings should be selected according to feed‑water quality, membrane‑system requirements, flow rate, and treatment objectives.

RECLAIMED WATER & WATER REUSE

Water‑reuse systems can require additional particle control after upstream wastewater treatment before water enters membrane systems or selected reuse applications.

Intermediate Clarification
Candle Backwash Filters
Provide additional suspended‑solids separation for selected treated‑water streams.
Flexible Particle Filtration
Bag Filters
Reduce residual particulate contaminants before finer downstream filtration.
Fine Particle Control
Cartridge Filters
Provide fine particle reduction and membrane protection before suitable downstream treatment stages.

Water Reuse Treatment Concept
Treated Wastewater
↓
Suspended‑Solids Reduction
↓
Candle / Bag Filtration
↓
Cartridge Filtration
↓
UF / RO or Further Treatment
↓
Required Reuse Water
Filtration provides particle reduction and downstream equipment protection as part of a broader water‑reuse treatment process.
Final reuse‑water quality depends on the complete treatment system and the requirements of the intended application.

OIL‑CONTAINING WASTEWATER TREATMENT

Industrial wastewater from selected manufacturing and processing applications may contain both oil and suspended particulate contaminants.
Oil condition can vary significantly between different wastewater streams. Free oil, dispersed oil, and emulsified oil do not behave in the same way during separation.

Oil‑Water Separation & Pretreatment
Oil‑Water Separation Equipment
Oil‑water separation equipment can separate suitable oil phases in selected wastewater streams. Particulate removal depends on the equipment configuration.
Actual separation performance depends on oil condition, droplet characteristics, wastewater composition, flow rate, temperature, and equipment configuration.
Additional treatment may be required where emulsified or dissolved contaminants are present.

A MULTI‑STAGE FILTRATION APPROACH

A staged filtration arrangement distributes contaminant loading across equipment suited to each treatment duty.

Raw Water / Wastewater
↓
Coarse Protection
Basket Filter
Larger debris and foreign particle interception
↓
Suspended‑Solids Reduction
Self‑Cleaning / Multi‑Media Filter
Sediment, suspended solids & turbidity control
↓
Intermediate Filtration
Bag / Candle Filter
Residual solids & particulate reduction
↓
Fine Particle Control
Cartridge Filter
Fine particle removal & downstream protection
↓
Membrane Treatment / Further Treatment
UF / RO / Other Treatment Process

Not every water‑treatment system requires every filtration stage.
The actual sequence should be selected according to water quality, contaminant characteristics, solids loading, flow rate, required filtration accuracy, and downstream treatment objectives.

UNDERSTANDING THE ROLE OF INDUSTRIAL FILTRATION

Industrial filtration equipment primarily targets suspended solids and particulate contaminants.
Depending on the water composition and required treatment target, dissolved salts, dissolved metals, dissolved chemicals, organics, microorganisms, and other contaminants may require additional chemical, membrane, adsorption, biological, disinfection, or other treatment processes.
Select filtration and any additional treatment as part of the complete system design.
Treatment requirements vary with the wastewater composition and intended discharge or reuse application.

WHY CHOOSE FENGNUOCHANG FILTRATION EQUIPMENT

Multiple Filtration Technologies
Fengnuochang offers equipment for coarse protection, automatic cleaning, solid‑liquid separation, fine particle control, and membrane pretreatment.
Automatic Cleaning Options
Scraper, brush, suction, disc backwash, candle backwash, and multi‑media backwash configurations offer cleaning methods suited to different filtration duties.
Customized Filtration Solutions
Micron rating, flow capacity, media, materials, connections, vessel size, and controls can be selected for the water quality and operating conditions.

SELECT FILTRATION EQUIPMENT BASED ON YOUR WATER CONDITIONS

Equipment selection starts with the water quality and treatment objective.
Streams with the same target micron rating may need different equipment because their particles, solids concentration, composition, flow rate, and operating conditions differ.

For more accurate equipment selection, please provide:

Water Source / Wastewater Type
Application / Treatment Stage
Required Flow Rate
Main Suspended Solids / Particulate Contaminants
Approximate Particle Size & Solids Concentration
Target Micron Rating
Operating Pressure & Temperature
Material & Connection Requirements
Downstream Treatment Process
For automatic filtration applications, please also provide your current cleaning method, maintenance frequency, or main filtration problem, if available.

Based on these conditions, Fengnuochang can recommend equipment, filter media, filtration area, materials, and a system arrangement.

DISCUSS YOUR WATER FILTRATION REQUIREMENTS

Send us your water source, flow rate, contaminants, solids condition, target micron rating, pressure, temperature, and downstream treatment requirements. If some details are unavailable, describe your water and filtration problem. Our engineers can help identify the information needed for equipment selection.