MBR Technology for Onn-site Wastewater Systems By Reza Shams-Khorzani, Ph.D. VP - Bio-Microbics, Inc. 9 th KWEA/KsAWWA Annual Joint Conference August 29, 2017 Wichita, Kansas
Decentralized Wastewater Systems An onsite or cluster wastewater system that is used at or near the source to treat and recycle relatively small volumes of wastewater, generally from individual or groups of dwellings and businesses More emphasis on treatment of wastewater and disposal of effluent than collection; collection costs < 30% of total costs Wastewater is managed in small quantities, typically less than 0.1 MGD per system
On-Site Treatment/Disposal Issues Change in habits of water usage Power cost Noise Odors Monitoring issues
Technology Selection Pre-engineered pre-packaged treatment systems Capital and operation cost for 25 year life Process reliability extended warranty Remote monitoring of operation Technical support -24/7 service, 800# Reference from current operators!
Membrane BioReactors (MBR)
Immersed Membrane MBR High surface area reduced energy consumption Commercialized 1990 s Permeate Bioreactor low vacuum pressure (up to 7.5 psi) Recirculation
Why MBR? The Highest, Consistent Effluent Quality BOD < 5 mg/l TSS < 2 mg/l Turbidity < 0.5 NTU Fecal coliform < 200 CFU/100 ml (without disinfection) Nutrient removal capability
Why MBR? Smaller footprint (compact process) Simple to operate (compared to other processes trying to achieve same effluent quality) Robust biological process Energy efficient
MBR for On-Site Applications Pre-engineered modules ship install-ready Simple to install Designed specifically for both new and existing onsite tank configurations Minimum number of robust mechanical devices
MBR for On-Site Applications Completely automated Extended operation without needs for membrane cleaning and de-sludgeing Safe to use Cost effective
BioBarrier MBR Markets Single-Home Residential Clustered Residential High-Strength Commercial
BioBarrier Basic Components SaniTEE Screen Aeration Tank with Anoxic Zone Membrane Module Filtrate Tank (Permeate Pump) Control Supplemental Aeration for HSMBR
BioBarrier Basic Components
BioBarrier Basic Components
Facility Examples
Single Home BioBarrier System
Single-Home BioBarrier
Single-Home BioBarrier Parameters Influent Effluent Flow, gpd 300 300 BOD, mg/l 336 2.9 TSS, mg/l 250 <2 NH3-N, mg/l 34 <0.5 Total Nitrogen, mg/l 55 6.7 Q - NH3-N, mg/l 3 <0.1 No of days in service 376 376
1,500 gpd BioBarrier System
2,000 gpd BioBarrier System
3,000 gpd BioBarrier System
4,500 gpd HSMBR BioBarrier System
4,500 gpd HSMBR BioBarrier System
4,500 gpd HSMBR BioBarrier System
Matunuck Oyster Bar Rhode Island BioBarrier 6.0
Matunuck Oyster Bar Rhode Island BioBarrier 6.0 Kitchen 9,000-gal Grease Trap Settling Tank 7,000-gal Settling Tank 5,000-gal Dosing Tank Anoxic Aeration Dosing Tank Leached field Rest Rooms
Matunuck Oyster Bar Rhode Island BioBarrier 6.0
Matunuck Oyster Bar Rhode Island BioBarrier 6.0
Matunuck Oyster Bar Rhode Island BioBarrier 6.0
Matunuck Oyster Bar Rhode Island BioBarrier 6.0 Parameters Design Operation* Flow, gpd 6000 2800-winter 5500-summer Influent BOD, mg/l 1800 1250 Influent TKN, mg/l 114 96 Influent FOG, mg/l 300 480 Effluent BOD, mg/l 30 <4 Effluent TSS, mg/l 30 <4 Effluent FOG, mg/l 5 2.1 Effluent NH3-N, mg/l <10 1.4 Effluent TN, mg/l 10 7.6 * Monthly data, June 206 May 2017 * Lunch and Dinner
Gale Bailey Elementary School Maryland BioBarrier 4.5
Gale Bailey Elementary School Maryland BioBarrier 4.5 Carbon Feed Kitchen 3,000-gal Wet Well Settling Tank Screen Tank Anoxic Aeration Dosing Tank Leached field 8,000-gallon Rest Rooms
Gale Bailey Elementary School Maryland BioBarrier 4.5
Gale Bailey Elementary School Maryland BioBarrier 4.5
Gale Bailey Elementary School Maryland BioBarrier 4.5
Gale Baily Elementary School Maryland BioBarrier 4.5 Design vs Operation Start-up July 2015 Parameters Design Operation Flow, gpd 3500 2100* Influent BOD, mg/l 130 260 Influent TKN, mg/l 90 130 Effluent NH3-N, mg/l <5 <0.5 Effluent TN, mg/l 10 <5 w/ carbon 35 w/o carbon Feed: 5-day a week, from 8 AM to 3.5 PM. Summer and holidays: very low flow.
Conclusions MBR is an attractive and feasible technology for on-site treatment applications. Accurate flow data is necessary for good MBR design. Consistent nitrogen removal is possible with MBR system. Settleability is OUT -- Filterability is IN