PAPER & PULP INDUSTRY WASTEWATER

Special treatment solutions for paper and pulp wastewater containing high COD/BOD, color and refractory components

Paper and pulp sector; has high and variable water consumption due to pulp preparation, bleaching, deinking, coating and paper production processes. The resulting wastewater contains high COD/BOD, suspended solids (TSS), color and refractory components from process chemicals.

In Turkey, the Water Pollution Control Regulation (SKKY) and local discharge regulations determine standards and limits for discharge and reuse standards. PİLSAN CONSTRUCTION designs, installs and commissions processes verified by laboratory and pilot studies as turnkey.

Typical Paper & Pulp Industry Wastewater Characteristics

  • COD:

    ~800–6,000 mg/L (higher peaks may be seen during spill/leakage and campaign periods)

  • BOD₅:

    ~200–2,000 mg/L

  • TSS:

    ~200–1,500 mg/L (fiber/fillers: calcite, kaolin)

  • Color (Pt Co/ADMI):

    High; depending on lignin and dye content

  • AOX:

    Trace–hundreds mg/L order depending on bleaching chemistry and conditions (ECF/TCF applications reduce AOX)

  • pH:

    6–10 (may fluctuate in the range of 4–11 depending on lines)

  • Temperature:

    25–60 °C

  • Special components:

    Resin/fatty acids (pitch), adhesives, starch/PVA/CMC, surfactants, peroxide residue (H₂O₂), deinking ink particles

DESIGN PRINCIPLES FOR PAPER & PULP INDUSTRY WASTEWATER

Capacity and Safety Margin
Hydraulic safety according to hourly peaks.
Control and Automation
SCADA, pH, conductivity, DO, NOx and ORP monitoring.
Toxicity Management
Acute, chronic toxicity monitoring, biological inhibition tracking with respirometry.
Compliance and Audit
Compliance with SKKY and OSB discharge conditions; pre-treatment guide and flow acceptance criteria for participating facilities.
Modularity
Infrastructure where additional modules or lines can be added for increasing capacity or tightening limits.

SERVICES WE OFFER

  • Sampling plan, determination of wastewater characterization and pilot treatability studies.
  • Feasibility, process design and 3D layout
  • Engineering designs, manufacturing, installation, commissioning and operator training
  • Operation support, chemical and energy optimization, remote monitoring

Paper & Pulp Industry Wastewater cannot be solved with a single recipe. Pilsan Construction; based on the principles of source separation and strong equalization, establishes a combination of physicochemical treatment specific to target pollutants, controlled biological treatment and advanced treatment; offers compliant, stable and sustainable solutions.