ink printing wastewater treatment machine  is a common environmental protection requirement in industries such as printing and packaging. Treating such wastewater requires effective separation and purification of pollutants such as organic matter, pigments, and chemical additives in the ink. The following are several commonly used treatment machines and technical solutions, which can be selected based on the characteristics of wastewater (such as water-based ink or solvent based ink), water volume, and discharge standards:

1. Preprocessing equipment
(1) Grille/filter device
Function: Remove large suspended particles, paper fibers and other impurities.

Equipment: Automatic grid machine, bag filter, precision filter (accuracy up to 1-50 microns).

(2) Regulating tank (homogenization tank)
Function: Balance water quality and quantity to avoid impacting the subsequent treatment system.

2. Core processing equipment
(1) Concrete air flotation machine (DAF)
Principle: Ink particles are flocculated by adding coagulants (such as PAC, PAM), and then the flocs are floated to the water surface for separation through dissolved air flotation.

Applicable: water-based ink, offset printing ink, etc., can remove 60%~90% of COD and chromaticity.

Key equipment: Dissolving air pump, air flotation tank, scraper.

(2) Chemical oxidation equipment
Principle: Use ozone, Fenton reagent (H ₂ O ₂+Fe ² ⁺) or advanced oxidation techniques (such as electrocatalytic oxidation) to degrade organic matter.

Applicable: High concentration ink wastewater that is difficult to degrade (such as UV ink residue).

Equipment: Ozone generator, reaction kettle, pH adjustment system.

(3) Membrane separation system
Ultrafiltration (UF)/nanofiltration (NF): intercepting large organic molecules and pigments.

Reverse osmosis (RO): deep desalination and removal of small molecule pollutants for reuse.

Attention: Pre treatment is required to prevent membrane fouling, and regular chemical cleaning is necessary.

(4) Biological processing system
MBR (Membrane Bioreactor): Combining biochemical degradation and membrane filtration, suitable for long-term continuous treatment.

Anaerobic reactor (UASB/IC): deals with high concentration organic wastewater, produces biogas for energy recovery.

3. Deep processing and reuse
(1) Activated carbon adsorption tower
Function: Remove residual color and trace organic matter.

Regeneration method: steam regeneration or replacement of carbon bed.

(2) Ultraviolet (UV) disinfection
Application: Sterilization treatment before wastewater reuse.

If you are also interested in this machine,please don’t hesitate to contact us:

Overseas manager: Tom Wang

Email:cartonmachine.tomwang@aliyun.com

Phone/Wechat/Whatsapp:+86 13303078975