Solution for Printing and Dyeing Wastewater Treatment
--Efficient degradation, compliant emissions, and resource reuse
Product Description
Characteristics of Printing and Dyeing Wastewater
High chromaticity: containing dyes and additives, causing serious visual pollution.
High COD/BOD: High concentration of organic pollutants (2000-10000 mg/L).
Complex composition: containing heavy metals (chromium, lead), salts, and toxic substances (aniline).
Large fluctuations in water quality: Process changes lead to unstable pH and temperature.
Core processing technology
1. Preprocessing (physical/chemical methods)
Grille/regulating tank: intercepts fiber impurities and balances water quality and quantity.
Coagulation precipitation (PAC/PAM): removes suspended solids, colloids, and reduces color.
Fenton oxidation: Strong oxidation to reduce difficult to treat organic matter (suitable for high concentration wastewater).
2. Biochemical treatment (biological method)
Hydrolytic acidification: Decompose large organic molecules into small molecules to improve biodegradability.
Activated sludge process (A/O, A ²/O): efficient removal of COD and BOD.
MBR membrane bioreactor: high sludge concentration, clear effluent, and can be reused.
3. Deep processing (combination technology)
Ozone catalytic oxidation: Thoroughly degrade residual dye molecules.
Activated carbon adsorption: decolorization and removal of trace pollutants.
Reverse osmosis (RO): desalination and reuse of produced water for dyeing processes.
Detailed Photos
Our Advantages
Application scenarios
Textile printing and dyeing factory: dyeing wastewater from cotton, synthetic fiber, and blended fabrics.
Cowboy washing plant: treatment of high chromaticity indigo wastewater.
Printing workshop: complex wastewater containing pulp and heavy metals.
Advantages of the plan
Standard discharge: Complies with the "Emission Standards for Water Pollutants in Textile Dyeing and Finishing Industry" (GB 4287-2012) and local standards.
Low cost operation: Anaerobic process produces biogas to recover energy and reduce energy consumption.
Modular design: Suitable for centralized processing in small-scale factories or parks.
Intelligent monitoring: PLC automatic control, real-time adjustment of dosage and aeration intensity.
success cases
A large textile factory in Vietnam adopts the "coagulation+UASB+MBR" process, with a COD removal rate of over 95% and a reuse rate of 40%.
Zhejiang Printing and Dyeing Park: Ozone catalytic oxidation deep treatment, color<10 times, saving 3 million yuan in annual pollution discharge fees.
| Application industry |
Processing object |
Treatment effect |
| Municipal sewage |
Sludge concentration and algae removal |
Reduce the moisture content of sludge from 99% to 95%, improving the subsequent dewatering efficiency |
| Food processing |
Oils, proteins, suspended particles (such as slaughter wastewater) |
Oil removal rate>85%, COD reduction of 50% -70% |
| Paper industry |
Recycling of fibers and fillers (such as CaCO3) |
Fiber recovery rate exceeds 90%, reducing raw material costs |
| Petrochemical/Pharmaceutical |
Emulsified oil, colloidal substances |
Reduce oil content from 100mg/L to<10mg/L and meet emission standards |
| Printing and dyeing wastewater |
Removal of dye particles and chromaticity |
Color removal rate of 60% -80%, improving subsequent biochemical treatment |
Why choose us?
1. Our company is an on-site manufacturer, and all sewage treatment equipment is independently developed, designed, produced, assembled, and inspected by our company. The process is strictly controlled, and the quality is guaranteed.
2. Factory direct sales, no middlemen to earn price differences, high cost-effectiveness, and quality assurance.
3. The company has national high-tech enterprise, ISO, SGA and other certification certificates, which are trustworthy.
4. The after-sales service system is perfect, with guaranteed after-sales service. When problems arise, the response is quick and the problems are solved in a short period of time, allowing customers to use without worry.
5. The sewage treatment equipment adopts advanced treatment processes at home and abroad, with good treatment effects and easy and fast operation.
6. The equipment has a short construction cycle, low operating costs, and can quickly solve customer problems.
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