Chemical Printing and Dyeing Membrane Filter Press

SINOU, a professional manufacturer focusing on industrial solid-liquid separation equipment, provides customized Chemical Printing and Dyeing Membrane Filter Press for global customers. This equipment is specially developed for the characteristics of printing and dyeing wastewater, chemical slurry, dye intermediates and pigment sludge.

It combines chamber filtration and high-pressure membrane squeezing to achieve deep dewatering, clear filtrate and low-moisture filter cake. The whole machine adopts corrosion-resistant materials, anti-adhesion structure and intelligent automatic control system, adapting to high-salt, high-viscosity and corrosive working conditions.

We support customization of filtering area, plate material, anti-corrosion level and control mode to provide stable, efficient and compliant treatment solutions for chemical and printing & dyeing projects.

Product Features & Advantages

1. Special for chemical & printing-dyeing sludge

Optimized for high-chroma, high-COD, corrosive, viscous dye wastewater and chemical sludge; excellent anti-clogging and anti-adhesion performance.

2. High-pressure membrane deep dewatering

Secondary high-pressure squeezing reduces moisture by 5%–15% compared with standard filter presses, greatly lowering sludge disposal cost.

3. Corrosion-resistant structure

Adopts anti-corrosion filter plates, pipelines and seals; suitable for acid, alkali, salt and organic solvent environments.

4. Anti-clogging & anti-sticking design

Widened flow channels and smooth filter surface prevent dye particles and viscous sludge from blocking, ensuring stable long-term operation.

5. Fully automatic intelligent operation

Automatic closing, feeding, squeezing, washing and cake discharging; reduces manual contact with corrosive materials.

6. Stable effluent quality

Effectively removes suspended solids, chroma and COD; filtrate is clear and reusable, meeting environmental discharge standards.

Application Fields

1. Printing and Dyeing Industry

Widely used for the treatment of high-chroma, high-COD dye wastewater, textile printing sludge, dye residue slurry, pigment wastewater, and dye intermediate separation.

Chemical Printing and Dyeing Membrane Filter Press effectively removes suspended solids, reduces chroma and COD, realizes clear filtrate recycling, and meets strict environmental discharge standards for the printing and dyeing industry.

2. Chemical Industry

Suitable for solid-liquid separation in fine chemicals, inorganic salts, coatings, pigments, resins, petrochemical by-products, crystallization slurries, and various chemical sludge.

It provides stable high-pressure filtration, improves product purity, realizes resource recovery, and meets safe and environmental protection requirements in chemical production.

3. Electroplating & Leather Industry

Applied to electroplating wastewater sludge, heavy metal sludge, leather tanning waste residue, and comprehensive wastewater treatment.

It safely separates heavy metal ions and harmful impurities, reduces sludge volume, and helps enterprises achieve harmless treatment and up-to-standard discharge.

4. Paper Making Industry

Used for pulp and paper wastewater, fiber recovery, papermaking sludge dewatering, and white water recycling.

It efficiently recovers fiber materials, reduces sludge moisture, saves water resources, and lowers production and disposal costs.

5. Food & Pharmaceutical Industry

Ideal for food processing residue, fermentation sludge, pharmaceutical wastewater, traditional Chinese medicine residue, and starch processing slurry.

It meets hygienic and high-efficiency separation requirements, with clean filtrate and dry filter cake for convenient disposal or recycling.

6. Other Industrial & Hazardous Sludge Treatment

Suitable for urban municipal sludge, breeding wastewater, construction slurry, mining tailings, and various hazardous waste sludges.

It provides reliable deep dewatering, reduces transportation and disposal costs, and supports enterprises in complying with national and local environmental protection policies.

Parameter Specification

Note: Items with "*" means having a pair of intermediate supports.

How to Select Chemical Printing and Dyeing Membrane Filter Press?

1. Confirm sludge type and characteristics

Confirm whether it is printing and dyeing sludge, chemical slurry, pigment wastewater, electroplating sludge or papermaking sludge. Different sludge has different viscosity, corrosiveness and particle size, which directly affect filter plate material and pressure configuration.

2. Confirm daily treatment capacity

Provide daily sludge volume (tons/day or m³/day) to determine the required filtering area and model size. Small treatment capacity selects 20–100 ㎡; medium capacity 100–300 ㎡; large capacity 300–500 ㎡.

3. Confirm moisture requirement of filter cake

Higher dewatering standard needs higher membrane squeezing pressure. For chemical and dyeing sludge, we recommend 0.8–1.6 MPa high-pressure membrane structure for lower moisture.

4. Confirm corrosion resistance level

For acidic, alkaline or high-salt chemical working conditions, select anti-corrosion filter plates, anti-corrosion pipelines and sealed components to ensure service life.

5. Confirm site space and installation conditions

Provide length, width and height of the installation area. We will match compact or conventional structure to fit your site.

6. Confirm power supply and control mode

Standard power supply: AC380V 50Hz. We also support customization for different voltages. Automatic control is recommended for chemical and dyeing workshops to reduce manual labor.

7. Confirm supporting equipment requirements

According to working conditions, we can configure matching feeding pump, reaction tank, conveyor and control system to form a complete automatic treatment system.

Product Comparison vs Competitors

Common Problems & Solutions

1. Slurry leakage between filter plates

● Cause: Filter cloth folded or damaged; filter plates not fully closed; feeding pressure too high.

● Solution: Reinstall filter cloth flat; replace damaged cloth; check hydraulic pressure; reduce feeding pressure.

2. Filter cloth or feeding port clogged easily

● Cause: Dyeing/chemical sludge is viscous; particles are fine; no pre-treatment.

● Solution: Dilute slurry properly; use anti-clogging filter cloth; clean regularly; add agitation tank.

3. Filter cake moisture too high

● Cause: Insufficient membrane squeezing pressure; short pressing time; filter cloth clogged or worn.

● Solution: Increase squeezing pressure; extend pressing time; clean or replace filter cloth.

4. Filtrate turbid, not clear

● Cause: Filter cloth broken; cloth mismatched for dyeing/chemical slurry; sealing failure.

● Solution: Replace damaged filter cloth; use special cloth for high-chroma sludge; check sealing parts.

5. Hydraulic system no pressure or slow action

● Cause: Low hydraulic oil; oil leakage; valve or pump failure.

● Solution: Add hydraulic oil; check and repair leakage; replace faulty parts.

6. Equipment corroded quickly in chemical environment

● Cause: Using standard material; no anti-corrosion treatment.

● Solution: Use anti-corrosion filter plates, pipes and seals; maintain and clean after each shift.

7. Automatic cycle abnormal

● Cause: Sensor misalignment; parameter error; unstable power.

● Solution: Adjust sensor position; reset program; ensure stable voltage.

8. Filter cake difficult to drop

● Cause: Slurry too sticky; low squeezing effect; filter cloth aging.

● Solution: Improve pre-treatment; extend squeezing time; replace anti-sticking filter cloth.

Before and After Treatment Effect Comparison

1. Sludge State Comparison

● Before treatment: Sludge is watery, viscous, high-volume, difficult to stack and transport, easy to leak and pollute.

● After treatment: Sludge forms dry, hard, low-moisture filter cake, no stickiness, no leakage, easy to stack and transport.

2. Moisture Content Comparison

● Before treatment: Moisture as high as 95%–99%, extremely high disposal and transportation cost.

● After treatment: Moisture reduced to 55%–70% (lower than ordinary filter press by 5%–15%), volume reduced by more than 70%.

3. Wastewater & Chroma Comparison

● Before treatment: Wastewater is dark, high chroma, high COD, high suspended solids, cannot be discharged or reused.

● After treatment: Filtrate becomes clear and clean, chroma and COD greatly reduced, can be recycled or discharged up to standard.

4. Operating Cost Comparison

● Before treatment: High sludge transport cost, high disposal cost, high labor input, high environmental risk.

● After treatment: Greatly reduced sludge weight & volume → lower transport cost; less manual handling → lower labor cost; compliant discharge → avoid environmental fines.

5. Site Environment Comparison

● Before treatment: Odor, sewage overflow, messy site, difficult to pass environmental inspection.

● After treatment: Clean site, no odor, no sewage accumulation, fully meet environmental protection requirements.