ETP for Paper Industry
The paper industry is one of the most water-intensive sectors, using significant volumes of fresh water for pulp processing, fiber transport, and paper formation. Consequently, it generates a large quantity of chemical-laden wastewater that must be treated before disposal or reuse.
Our advanced ETP systems for the paper industry are engineered to meet CPCB/SPCB norms, ensuring effective removal of solids, chemicals, and organics, while enabling water reuse and reduced environmental impact.
Why ETP is Essential for Paper Mills
Paper mill effluent typically contains:
High levels of COD, TSS, and color
Harmful organohalides (AOX), phosphorus, and nitrogen
Contaminants from bleaching, sizing, and chemical treatment processes
If not treated properly, this wastewater can cause serious environmental damage, health risks, and regulatory violations.
Overview of the ETP Process
1. Collection & Equalization
All wastewater streams are collected in an underground tank
Bar screen removes large debris
Oil and grease trap eliminates floating waste
Air agitation ensures uniform mixing
2. Chemical Treatment
Effluent is transferred to a flash mixer
Coagulants and flocculants are dosed using automatic pumps
Water flows into a clari-flocculator tank for solid settling
3. Solid Separation
Tube settler separates sludge, which is sent to drying beds or filter press
Dewatered sludge is safely disposed of in authorized landfills
4. Biological and Filtration Treatment
Treated water passes through biological systems
Then through a Dual Media Filter (DMF) to remove suspended particles
Followed by an Activated Carbon Filter (ACF) to remove color and odor
5. Final Treatment and Reuse
Chlorine dosing for disinfection (if required)
Treated water stored in Treated Water Holding Tank (TWHT)
Reused for process needs or horticultural purposes
Wastewater Characteristics Before and After Treatment
| Parameter | Before Treatment | After Treatment |
|---|---|---|
| Temperature | 25°C to 35°C | Not more than 5°C above ambient |
| Colour | Light yellowish | Colourless |
| Odour | Present | Absent |
| pH | Varies | 6.5 to 8 |
| COD | High | ≤ 150 mg/L (as per PCB norms) |
Note: As the BOD load is evenly distributed in daily discharge, separate BOD treatment is not required.
Equipment and Scope of Supply
Primary Treatment Section
Bar Screen – 01 No.
Effluent Transfer Pump – 01 No.
Air Blower – 01 No.
Aeration Grids – 01 Set
Chemical Dosing Systems – 03 Sets
Filter Feed Tank – 01 No.
Packaged Treatment Unit – 01 Set
Secondary Treatment Section
Filter Feed Pump – 01 No.
Dual Media Filter – 01 No.
Activated Carbon Filter – 01 No.
Chlorine Dosing System – 01 Set
Filter Feed Tank – 01 No.
Auxiliary Equipment
Piping and Instrumentation – As per P&ID
Treated Water Storage Tanks – 02 Nos.
Transfer Pump (1.5 HP) – 02 Nos.
Transfer Pump (7.5 HP) – 01 No.
Electrical Control Panel with Internal Cabling – 01 Set
Why Choose Hydro Water Industries
Decades of experience in industrial effluent treatment
Custom-engineered systems to meet specific effluent profiles
Fully compliant with CPCB/SPCB standards
Low energy consumption, low maintenance, and high reliability
Complete turnkey solutions: design, supply, installation, and service
Contact us today to learn more about our paper industry ETP solutions and how we can help your plant stay efficient, compliant, and sustainable.
Enquiry Number
+91 93690-75730
hydrowaterindustries@gmail.com
Address
Kh. No.608/1, Asaudha, Balaji Industrial Area Bahadurgarh, Haryana