1. BNWRP Biosolids Presentation
Victorian Biosolid Steering Committee
By Ron Crafter
17/11/2014

2. Ballarat North Water Reclamation Plant
Contents
Design Parameters of BNWRP
Current Conditions
Process Flows
Wasting Process
Thermal Dryer Design Parameters
Thermal Dryer Isses
Sustainability Biosolid Reuse

3. Ballarat North Water Reclamation Plant
Design
8.4 ML/d Average Dry Weather Flow
21 ML/d Peak Wet Weather Flow
2/3 Domestic and 1/3 Industrial waste influent
Carbon limited due to trade waste
2 process trains (except sludge dryer)
Waste processing by centrifuges and thermal dryer
Biosolids sustainable reuse to composter
Class B effluent discharge to Burrumbeet creek
Class B effluent processed to Class A and piped to Lake Wendouree

4. Ballarat North Water Reclamation Plant
Current
Approximately 6.3 ML/d Average Dry Weather Flow
21 ML/d Peak Wet Weather Flow not unusual
McCain’s is 50% of nutrient load
Carbon dosing - molasses/sugar
Approximately 30% of effluent to reuse plant
Biosolids to Agriculture

5. Ballarat North Process
Reuse
Primary
Inlet
Biological Reactors
Secondary
Tertiary
Sludge Processing
Lake
Creek
RAS
WATER FLOW

6. Ballarat North Process
Reuse
Primary
Inlet
Biological Reactors
Secondary
Tertiary
Sludge Processing
Lake
Creek
SLUDGE FLOW
WAS
Dry Bio-solids

7. Waste - Sludge Process 3 % Dry Solids 0.6 % Dry Solids
Primary Clarifier scum
Biological Reactors
Waste Activated Sludge
Secondary Clarifier scum
0.6 % Dry Solids
3 %
Dry Solids
Fermenter solids
Thickening Centrifuge

8. Waste Sludge Drying 17 % DS 90 % DS 3 % Dry Solids 90 % DS
Raw Material
silo
Recycle
Mixer
Screens
Crusher
Sludge Blend
Tank
Dewatering Centrifuge
Thermal Dryer
Reuse
2/3 recycled
1/3 Reuse
17 % DS
90 % DS
3 %
Dry Solids
70 % DS
90 % DS

9. Thermal Dryer Design

10. Reliability Centred Maintenance (RCM)
Developed in the 60s, RCM is a structured review process that delivers the optimum maintenance based on identifying the risk associated with failure modes.
The review was conducted onsite in 2011
Change “when to maintain” to “which maintenance to perform”

11. Proposed EPA approved Receiver direct from BNWRP
Continuous Improvement for
Sustainable Biosolid Reuse
A P
C D
Proposed EPA approved Receiver direct from BNWRP
EPA Approved
Veolia EIP
C D
A P
EPA Approved
Veolia EIP
Updated
Improvement
A P
C D

12. BNWRP Biosolids “Source to Resource”
Questions…