Services
ETP & CBG BIO CNG
Sustainable solutions for effluent treatment and biogas energy recovery.
Sustainable solutions for effluent treatment and biogas energy recovery.
Parason delivers integrated environmental solutions for the pulp and paper industry. Our Effluent Treatment Plants (ETP) ensure compliance with discharge norms while our Compressed Biogas (CBG) and Bio-CNG systems convert waste into clean energy.
With decades of mill expertise, we design ETP systems that handle the unique challenges of paper mill effluents — high COD/BOD, suspended solids, and color. Our bio-methanation technology then extracts maximum energy value from organic waste streams.
The result is a circular economy approach where treatment costs are offset by energy generation, sludge is minimized, and mills achieve zero liquid discharge (ZLD) targets with proven, reliable technology.
Complete wastewater treatment systems designed for pulp and paper mill effluent characteristics
Screening, equalization, and clarification to remove suspended solids, fibers, and normalize flow. Recovers usable fiber and reduces load on downstream systems.
Aerobic and anaerobic biological systems to break down organic pollutants. Activated sludge, UASB, and MBBR technologies for optimal COD/BOD removal.
Advanced polishing with filtration, ozonation, and membrane systems for water reuse. Achieves discharge standards or zero liquid discharge.
Belt filter presses, screw presses, and decanters for efficient sludge dewatering. Reduces disposal volume and enables composting or energy recovery.
SCADA-based control systems with online analyzers for pH, COD, TSS, and flow. Real-time monitoring ensures consistent compliance.
Automated coagulant, flocculant, and nutrient dosing systems optimized for mill effluent chemistry with feedback-based control.
Convert organic waste streams into clean compressed biogas for energy independence
Anaerobic digestion reactors to convert organic waste from mill effluents, press mud, and agro-residues into raw biogas with 55-65% methane content.
Scrubbing and upgrading systems to remove CO₂, H₂S, and moisture — producing pipeline-quality compressed biogas (CBG) with 95%+ methane purity.
High-pressure compression (250 bar) and storage systems for vehicle fuel or grid injection. Turnkey dispensing stations available.
Biogas-to-electricity with gas engines and generators. Offset mill power consumption and earn renewable energy credits.
Systematic project delivery from assessment to long-term performance
Analyze effluent quality, waste streams, volumes, and variability to define treatment requirements.
Select optimal treatment train and biogas technology based on waste characteristics and output goals.
Detailed engineering, equipment manufacturing, civil guidance, and system integration.
On-site erection, biological seeding, process optimization, and performance guarantee testing.
Ongoing operations support, consumables supply, performance monitoring, and optimization.
Analyze effluent quality, waste streams, volumes, and variability to define treatment requirements.
Select optimal treatment train and biogas technology based on waste characteristics and output goals.
Detailed engineering, equipment manufacturing, civil guidance, and system integration.
On-site erection, biological seeding, process optimization, and performance guarantee testing.
Ongoing operations support, consumables supply, performance monitoring, and optimization.
Environmental compliance that delivers tangible operational and financial returns
Meet all CPCB/SPCB discharge norms and avoid penalties or closure orders.
Recover 70-90% of treated water for reuse in mill processes, reducing freshwater intake.
Convert waste to CBG/CNG and offset fuel costs with renewable biogas energy.
Earn tradeable carbon credits from methane capture and renewable energy generation.
Minimize sludge volume through efficient dewatering and bio-stabilization.
Achieve ZLD targets with advanced membrane and evaporation technologies.
Sell surplus CBG/CNG as vehicle fuel or inject into city gas networks.
Recover usable fiber from primary treatment, reducing raw material costs.
Demonstrate environmental responsibility to customers, investors, and communities.
Decades of expertise delivering world-class solutions
Ready to discuss your project requirements?
Comprehensive solutions across the entire mill lifecycle