1. Environment

Minutes of Environmental Impacts Subcommittee

By: Jeff Tolan

10 members present

1. U.S. Regulations

Nancy Van Allen agreed to review US effluent regulations, and the new dioxin information reported in the US. Nancy will target a short presentation for the Spring ’01 meeting of the bleaching committee.

2. Mill practices to achieve low OX in pulp

This will be a roundtable at the fall meeting. Those participating include:

• Norm Liebergott: overview
• Dave Willis: Peroxide
• Gord Homer: DZ stages
• Jeff Tolan: Xylanase
• Zhi-Hua Jiang: Paprican information

1. Water discharge limitations. This is becoming a more significant issue in Sweden and around the world, more so than in Canada. There is expected to be increased concern about water discharges with increased attention to the greenhouse effect. The conductivity of discharges might also be regulated.
2. Zero AOX regulations. Still on the books for 2002 in Ontario and BC.
3. Discharges in watersheds. The subcommittee agreed to continue to monitor Pierre Martel’s work at Paprican, where he is studying effluent discharges in Quebec. Pierre gave a talk in Sudbury on this topic.

J. Bouchard (replaced D. Davies as Chair for this meeting)

J. Kronis

J. Prins

1. Presentation on the Protocol and Booklets Distribution

The booklets (French and English) have been distributed to the Canadian Institution (Thanks to PAPTAC which has dropped the price from $20 down to $5 for us)

The English presentation has been distributed to Universities

The translation to French has been completed and ll be distributed.

The protocol will be added to our website

Regarding a French/English dictionary, the PAPTAC French committee will be contacted to see if there is an interest for such a project.

Chair: Rae Cunnington

Members: Laurier Morrisette, Murray Walters, Rae Cunnington, Dave Willis, Jeff Tolan, Norm Liebergott, Ted Tunstall.

1. Norm Liebergott gave an update on the upcoming Pulp Bleaching Course to be held in Miramichi, October 2 to 5, 2000. The intent is to cover the same material as in the full course but in less time. Some re-arrangement of presentations is being made. All presenters have been confirmed.
2. This sub-committee organized the Breakfast Technical Sessions to be held at the International Bleaching Conference to take place this week. A high attendance is indicated.
3. Suggestions for topics for the next Technical Session for the fall, 2000 Prince George meeting were generated. The theme is "Mill Operations":

• Round table on FRP Inspection/Construction/Failures/Maintenance and Repair. Craig Reid to chair?

• The process of tracking operating costs in the bleach plant. Murray Walters to discuss with Gerry Ferweda and John Brazil.
• Control of oxygen delignification to achieve optimum pulp quality. Laurier Morrisette.
• Bleach filtrate recycle to minimize costs and the impact of recycle to the brownstock washing system of O filtrate recycle in a DODED sequence. Rae Cunnington and Murray Walters to look after.

1. Discussion related to next Pulp Bleaching Course:

• Committee will sponsor full course in 2001.

• Western location is preferred, Kamloops or Whistler.
• Full course.
• Need more advertising, especially in Pacific North West.

1. The second bleaching stage, with all its variants, is suggested as a topic for the subsequent technical session.
2. Other Business.

Rae Cunnington

Chairman, Teaching Bleaching Sub-Committee

Chair is Chris Kanters. Presentations given by this subcommittee are available on the website under "Attachments".

• Safe Handling of Bleaching Chemicals (Priority List)
  
• Fall 1999 - O₂ - Air Products, Tom Mullen
• Spring 2000 - No presentation - IPBC
• Fall 2000 - H₂O₂ - Stan Heimburger
• Spring 2001- MeOH - Roger Bernard to talk to Van Waters & Rogers

• Safety Incidents
  
• Past incident reports are available on
  BC web site
• Blank sheets are available from Dennis Owen or web site
• New incidents since Fall ’99 meeting? (Chair did not note any new incidents in his minutes.)

• High Kappa Pulping + Oxygen Delignification vs. Pulping Only
  (Gord Homer, Brian Roy, Chris Kanters)
  
• Gord Homer will present some modeling work to subcommittee at this meeting
• Project team will look for lab studies and mill experiences in this area

• Experiences with chemical removal and prevention of scale in the bleach plant
  (Doug Reid, Stan Heimburger, Jim Oei, Irene Yaraskavitch)
  
• Outline for project has been completed. Project team has been assigned responsibilities
• Doug Reid to give brief presentation on BaSO₄ scaling to subcommittee at this meeting
• Technical presentation, to BC, scheduled for Fall 2000

(Chairman did not note any suggestions in his minutes.)

Chair is Murray Walters.

1. Consistency sensors. Report in Fall 2000.
2. FRP Inspection/Fabrication/etc. Technical Session Fall 2000.
3. Bleaching Cost Calculations Standards/Use. Plan for Fall 2000 Technical Session.

1. Kappa analyzers and Bleach Plant Control

• Stan Heimburger is the Lead on this project with assistance from Shane Svendson, Don McCabe, Lance Anderson, Sean Glendenning and Dave Flater.

1. Survey of ClO2 Storage Tank Containment Techniques

• Murray Walters is lead with Dennis Owen assisting.

1. Metallurgy of MC Pump Standpipes with H2SO4 Addition

• Bob Ostaff.

1. RIO/SCW Filter Problems
2. Kynar/Teflon-lined Pipe for ClO2, NaClO3 Service
3. Bleach Plant Metallurgy in General

• Future Technical Session?

Members:

J. Bouchard, Chair

T. Mullen

T. Larson

J. Prins

J. Kronis

The winners of the First Howard Rapson Award are:

Jiang Z., van Lierop B., Nolin A. and Berry R.

Paprican, Pointe-Claire, Québec, Canada

For their paper entitled:

The jury members were:

• Dan Davies, Degussa-Hüls (suppliers)
• Ron Krzywanski, Canfor (Industry)
• Luc Lapierre, Paprican (Research)

We will try to organize a roundtable for the next meeting as well as one or two technical sessions.

Tom Mullen agreed to organize the roundtable

4 topics were proposed to the Bleaching committee and the result of the vote is as follow:

21 votes for "Scaling Problems"

11 votes for "Corrosion (linked to SO₂ elimination, antichlor, metallurgy)

10 votes for "New chemicals in bleaching"

2 votes for "D₀ control after oxygen delignification"

Chris Kanters is Chair. Members include: Jim Collins; Dan Davies; Tony Gomersall, Calvin Hastings and Paul Earl.

• Minutes will follow this format on web site
• Attendance list
• Subcommittee Meeting Minutes
• Business Meeting Minutes
• Technical Session Minutes
• Mill Problems Session
• Mill Opportunities Session
• Attachments

• Upcoming Conferences - location, date
• please feed additions via e-mail

• Hyperlinks to Key Industry Sites
• P&P Companies - Chemical Suppliers
• Equipment Suppliers - Engineering
• Analytical Services - Environmental Consulting
• Academic Institutions - Industry Associations
  
• Please send any additions via e-mail

• Membership List
  
• will be updated only twice a year following our committee meetings
  
• Upcoming Courses
  
• Safety Incidents Section

• PAPTAC Bleaching Protocol Page (Special thank you to Dan Davies)
  
• Letter designations, definitions, principles
• Examples of protocol usage
• Equivalent protocol page will be added to public portion of site

• French Version of the Public Portion of the Bleaching Committee Web Site
  
• "Francais" Button (in left margin) on Home Page
• Thank you to PAPTAC for translation
• Need to find person who will update these pages on a regular basis. Volunteer?

• Recognition Page for Suppliers who Provide Financial Support to the Committee
  
• contributions of ~$350-500/year for semi-annual meetings, speaker gifts etc.

• Username - "bleachcom"
  
  
• Password - "yrusobright"
  
  
• Effective July 1st, 2000

D. SUBCOMMITTEE, June 26, 2000 BC Meeting.doc