Download presentation
Presentation is loading. Please wait.
Published byAllen Joseph Modified over 8 years ago
1
Presentation to : WERF LIFT Presented by:
2
Lystek - The Company Low Temperature Chemical Hydrolysis technology installed after dewatering, easy to install bac end solution Produces a hydrolyzed product with three uses: - Class A EQ (US) and CFIA registered (Canada) fertilizer - Digester Enhancement - Carbon Source for BNR Ownership: Management and RW Tomlinson Ltd, Ottawa, Ontario (> 1000 employees,> $ 500 million annual sales, able to provide guarantees
3
Lystek Proven Experience SiteGuelphSt MarysDundalkIroquoisEloraNorth Battleford Status200820102012 2014 Spring 2014 Fall Capacity (wet tons / year) 40,0008,000150,00045,0005,00020,000 OwnershipGuelphSt MarysLystekThird High Farms Centre Wellington North Battleford SolutionDBTech License DBOODB DB & Marketing Serving multiple municipalities: Toronto, Ottawa, Region of Waterloo, Oakville, Burlington, etc.
4
How Does the Lystek Process Work? Processing time: 45 minutes; semi- batch continuous process Processes 3%-30% biosolids & utilizes a combination of: - heat - low pressure steam (7- 8 psi), low temperature 160 -165 o F (operates at ambient pressure) - high shear mixing and - pH adjustment (9.5-10) using alkali Produces a high solids (15%-19%) hydrolyzed liquid product, pumpable, using conventional pumps
5
Lystek Process
6
Applications of the Technology Lystek processes digested or undigested biosolids and source separated organics Homogeneous liquefied product has viscosity below 5,000 cP for easy handling, storage, transportation and application Multi-purpose product: - WWTP process optimization, re-feeding of the product into: Anaerobic digester BNR - Class A EQ quality, nutrient rich (NPK 4:3:2) liquid fertilizer for beneficial use in agriculture and horticulture
7
Technical / Scientific Basis Process conditions cause cell disintegration and hydrolysis of complex organic molecules into simpler & rapidly biodegradable compounds Hydrolyzed product provides readily available organics for anaerobic digester and carbon source for BNR system The product contains >30% of the soluble and readily biodegradable COD and VFAs Lystek process applies to the digested biosolids that contain recalcitrant residual organics and makes them more amenable to biodegradation
8
Low Viscosity LysteGro Product Product Viscosity <5,000 cP
9
Electron Microscopy Untreated BiosolidsLystek Biosolids
10
Small System Footprint
11
Uses of the Lystek Process/Product - Re-feeding anaerobic digester for enhanced performance: Extra material breakdown: >20% Extra biogas yield: up to 50% - Re-feeding BNR system Cost effective alternative carbon source - Class A EQ (US) and CFIA registered (Canada) fertilizer Liquid, high solids, pumpable, storage in covered tanks/ lagoons, enclosed tanker, sub surface injection
12
Performance and Benefits of Technology Back end solution - easy to install, small footprint, modular On site and off site solutions Low investment Low operation and maintenance costs Optimized odor control: waste and product not exposed to open air Dust free, clean operations
13
Pilot tests – Recycling to WWTP Processes City of Guelph – Full-scale pilot study result: Increase in >40% biogas and >25% solids reduction by recycling Lystek product to a test digesters compared to the control digester without Lystek feed. Biodegradability of Lystek biosolids itself is in the range of 65-70%. Parameters (average of different feed rates over 6 months study period) Control Digester without Lystek biosolids Test Digester with Lystek biosolids Influent VSS primary sludge (kg/d)23072278 Lystek VSS (kg/d)0921 Combined Influent VSS (kg/d)23073199 Effluent VSS (kg/d)11181222 VSS Destroyed (%)5162 Biogas production (m 3 /d)11891977
14
Pilot Tests – Recycling to WWTP Processes St Marys: Studies indicated that an integrated BNR-AD-Lystek system significantly improves effluent quality and reduces overall biosolids generation by >25%. Lab tests indicated that the denitrification rates of Lystek biosolids were similar to acetic acid as carbon source.
15
Laboratory Tests Los Angeles County: Carried out at University of Western Ontario - compared to the raw sludge only, biogas improvement by raw sludge + Lystek processed digested sludge produced >30% more methane with a potential to further increase to >40%. Lystek biosolids were 65% biodegradable. New York– Carried out at Manhattan College - residual volatile solids in the anaerobically digested biosolids are >50% more biodegradable after Lystek process. Study will continue with a different plant biosolids.
16
Laboratory Test New York – carried out at the Manhattan College - on potential of Lystek biosolids as a carbon source in BNR system using different sludges. Lystek biosolids provided significantly higher specific denitrification rates (SDNR) Early Rates-First 30-minutes Carbon SourceStamford26th WardBattery EHunts Pt Endogenous-0.0208-0.0597 Primary Effluent-0.0284-0.0309-0.0495-0.1384 Methanol-0.0443-0.0462 Glycerol-0.0493-0.0277-0.0586 Lystek-0.0491-0.1832-0.0656-0.0920 Note: SDNR Values (mg NOx-N/mg VSS) were averaged
17
What the Technology Needs to Move Forward A real scale demonstration Project in the US ideally at a WWTP which: - Currently have mesophilic digesters operating below 55% volatile solids reduction - Want to increase volatile solids reduction above 60-65% and/or increase biogas production by 30-50% - Currently have BNR, use a chemical carbon source and would like to reduce the chemical cost - Currently have, or are planning to install, dewatering equipment after the anaerobic digesters
18
Additional benefits - Production of a Class A, high solids liquid product that can reduce land application costs, eliminate odor complaints during processing, transportation, storage and land application - The project would benefit from a financially strong technology/ service provider that offers performance guarantees
19
Thank You and Q & A’s
Similar presentations
© 2024 SlidePlayer.com. Inc.
All rights reserved.