SATPC0037336 Tab 04 4 SOW.pdf
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- Bioreactor
- Solicitation number
- 80NSSC25892422Q
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This Statement of Work outlines requirements for the design, construction, and delivery of a Membrane Aerated Biological reactor for treating greywater in space habitation systems for NASA. The reactor must process greywater from 4 crew members, handling 41 L/day nominal volume (varying between 52 L/day twice weekly for laundry days and 37 L/day other days), treating waste streams from shower, laundry, handwash, oral hygiene, shaving, and humidity condensate.
The system will include influent connection, reactor, membrane modules, mass flow controllers, recycle pump, and effluent connection, constructed of polycarbonate/acrylic with PVC or HDPE tubing. Texas Tech University must provide NASA with input/output commands, system layout diagrams, and biological species information upon award, with backup biological samples at delivery. The period of performance begins at contract award with delivery required by May 15, 2025. Payment terms are structured as 25% upfront, 60% upon reactor completion/shipping, and 15% upon final delivery. The contract includes one installation/training trip and limited operational consulting support.
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Other files
| File | Type | Posted |
|---|---|---|
| SATPC0037336 Tab 06 RDSS..pdf | ||
| SATPC0037336 Tab 07 Capability Statement SAM.gov.pdf |
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STATEMENT OF WORK
Design, Construction, and Delivery of a Greywater Biological Reactor for Space Habitation Systems
W. Andrew Jackson, Ph.D.
Department of Civil Environmental and Construction Engineering Texas Tech University
01/27/2025
1. Objective/Requirements
This Statement of Work (SoW) includes all efforts to design and build a Membrane Aerated Biological reactor for treatment of greywater produced from a space habitat. The effort also includes funds to deliver the unit to Kennedy Space Center and limited time for technical support to install and operate the system in FY25.
2. Characteristics, Scope, and Specs
Reactor Description and Requirements: The reactor shall be able to treat a 4 crew-day based load. This load is based on past work in which greywater consisted of shower, laundry, handwash, tooth brushing discharge, shaving wastewater and humidity condensate. The nominal volumetric loading rate is 41 L/day. Currently, it is anticipated that laundry will be performed 2X per week resulting in a 52 L/d load 2X per week and a 37L/d load 5X per week. Table 1 below highlights the wastewater composition on which the reactor design will be based.
Table 1. Partial gravity habitation waste stream compositions and volumes. (Ghaem et al., 2024)
Waste Stream
Daily Volume for 1 Crew Member
(CM)
Daily Volume for Crew of 4
(L/day) (L/CM-day)
Hygie ne
Oral hygiene (Arm & Hammer, 8 g) 0.2 0.8
Hand wash 1 4 Shower 6 24
Shave (Neutrogena, 0.8 g) 0.0375 0.15 (1 CM shave/day)
Laundry (2 loads/week, 30 L-wastewater/week) 1.1 4.4
Total graywater 8.3 33.3 Humidity condensate 2 8
Total wastewater 10.35 41.3
It should also be noted that the system is meant to treat greywaters with a reasonable similarity to those developed for space habitat systems. This includes the use of biodegradable products that are non-biocidal. While some deviation from the products currently selected for space habitat systems is possible, performance cannot be guaranteed for use of products that are non-biodegradable to biocidal. Further, the system sizing is based on an organic load produced from the current prosed wastewater composition and mass loadings. If the graywater contains concentrations of products (e.g. shampoo, laundry detergent, etc.) that is substantially higher in organic loading (> 1000 mg/L of BOD), the performance of the system may be impacted.
The system will include an influent connection, reactor, membrane modules, mass flow controllers, recycle pump, and effluent connection. The systems will not include any on-line monitoring or controls. The system will be composed of polycarbonate and/or acrylic with PVC, HDPE, or other standard flexible tubing. This system is designed to operate on Oxygen (>99%) and a source will be required to be provided by the customer.
Upon award, TTU shall provide NASA with (1) a list of input/output commands for a control system operation, (2) a schematic/diagram of the system layout, and (3) a biological list of species used within the bioreactor. With reactor delivery, TTU shall provide NASA with a backup sample of the biological species in case of system reboot.
Delivery: Delivery will be by freight; a forklift may be required to unload the system.
Delivery date shall be contingent upon approval from NASA biological safety officer.
Training and Consulting: Travel for 1 trip to install and train is included. Funds are also included for limited consulting on operation and performance.
Payment Schedule: Initial Payment (25%) is required upfront to purchase equipment and materials. Reactor Completion and Shipping (60%). Final Payment on Project Completion and Delivery (15%).
3. Place of Performance Department of Civil Environmental and Construction Engineering, Texas Tech University, Lubbock, TX.
4. Period of Performance
Manufacture should begin immediately upon contract award. Delivery should be completed no later than May 15, 2025.
File details come from the government source that posted it. Updated .