MBBR ppt for Pulp&Paper, Sabesp, Oct 3, 2008 [Somente leitura]

Worldwide Pulp and Paper Production
PRODUCTION
182 million ton pulp per year
330 million ton paper per year
WASTEWATER TO TREATMENT
About 30-35 billion m3 wastewater generated per
year
About 25-30 million ton COD generated per year

Overview subindustries
Kraft pulp
Sulphite pulp
Recycled pulp&paper
Integrated pulp&paper
Tissue
Board
Specialty paper
Newsprint
Plywood etc

Pulping and Paper Mills
Market pulp mills
Raw material
Pulp Pulp
production
Pulp to free market or
To own paper mills
Integrated mills
Raw material
Pulp Pulp
production
Paper
production
Non-integrated paper mills
Raw material
Pulp
Deinking
Paper
production
Pulp

Typical characteristics
Biodegradability
from 50 % to > 95 %
Concentrations of COD
from 100 mg/l to 50 000
mg/l
Concentrations of SS
from 0 mg/l to > 5 000 mg/
Temperature
from 20 °C to 90°C
pH
From 2 to 10
Low concentrations of
nutrients

Bleached Kraft Pulping
Process
COD
kg/t pulp
Debarking 0 - 10
Brownstock area 0 - 7
Bleach plant 25 - 55
Evaporation condensates 3 - 15
Spills 3 - 8
Total 31 - 95

Mechanical Pulping Discharges
Process COD BOD
kg/Adt kg/Adt
SGW 30-40 10-12
PGW 40-50 12-16
TMP 50-80 15-25
CTMP 60-100 20-35
BCTMP (H2O2) 80-140 30-50

Wastewater characteristics
Important parameters
BOD
COD
TOC
TSS
pH
Temperature
Nutrients
Specific compounds (EDTA,
chlorate, resins, etc)
Other (calcium, etc)

MBBR

The Natrix TM MBBR process

The BAS TM biological process

ADVANTAGES OF BAS PROCESS
Ecellent settling properties 50-80 ml/g
( conventional plants 100 – 250)
No pulking problems, no filament bacteria
Very stable process under big loading
variations
Low biosludge production 0,12 kg/ kg COD
red. ( Conventional 0, 25 kg/ kg COD red)
Small foot print,volume 50% of conventional
Low energy consumption / high basins
Easy to upgrage existing plants

Sedimentation after 180 Seconds
BAS
CONVENTIONAL

The LagoonGuardprocess

Reference projects, selected
Kraft pulp
Södra Cell, Värö mill, Sweden
Zellstoff Stendal, Germany
CMPC Santa Fe, Chile
Suzano Bahia Sul, Brazil
Arkhangelsk Pulp and Paper,
Russia
TMP and newsprint
Stora Enso Hylte, Sweden
Stora Enso Kvarnsveden, Sweden
Stora Enso Anjala, Finland
Norske Skog Boyer, Australia

Reference projects
CTMP
Quesnel River Pulp, Canada
Waggeryd Cell, Sweden
Plywood and MDF board
UPM Schauman, Finland
UPM Chudovo, Russia
Norbord, Scotland
Tissue
SCA Edet mill, Sweden
Metsä Tissue Katrinefors, Sweden
Metsä Tissue Nyboholm, Sweden

Reference projects
Sulphite pulp and paper
Nordic Paper, Sweden
AO Kondopoga, Russia
Fine Paper
Fraser Paper, USA
Arjowiggins Charavines, France
Munkedal, Sweden
Recycled pulp &paper
Asia kraft, Thailand
United Paper Board, Malaysia
Greenfield, France

Suzano Papel e Celulose, Mucuri Mill, BA