PDF Guide · 47 pages
The Engineer’s Guide to Modular Wastewater Treatment
A 47-page technical reference covering SBR and MBR treatment, residential design inputs, installation, operations and the information ASM needs to review your project.
Engineering Reference Toolkit
Plan your modular wastewater project with the right inputs.
Download ASM’s 47-page engineering guide, residential sizing calculator and site feasibility checklist. Define your project flow in U.S. gallons per day (GPD), identify missing inputs and prepare for an ASM technical review.
47-page PDF + sizing calculator + site checklist • One ZIP download
Preliminary planning only — ASM engineering confirmation required.
Inside the toolkit
Three engineering resources, one ZIP download.
- The Engineer's Guide to Modular Wastewater Treatment (PDF, 47 pages)
- BIOASM sizing calculator (XLSX)
- Site feasibility checklist (XLSX)
- 10–200 m³/day reference
- ≈ 2,642–52,834 GPD
- BIOASM model range
- PT-50 – PT-1000
- U.S. residential flow basis
- Project GPD
10–200 m³/day reference
BIOASM model range
U.S. residential flow basis
PT-series units are single-module SBR reactors. For residential projects, establish design flow in U.S. gallons per day using the number of homes or bedrooms and the corresponding flow allowance confirmed by the project engineer. ASM confirms final equipment selection and the complete treatment scope.
Written for project teams
Built for the people scoping the project
- Civil & environmental engineers
- Engineering consultants
- Developers
- Municipal teams
- Resort & hospitality projects
- Remote camps & industrial facilities
What’s Included
Three practical resources. One download.
Move from early project questions to a more organized feasibility discussion with technical guidance, preliminary sizing tools, and a site-readiness checklist developed around modular wastewater projects.
Excel Tool
BIOASM Sizing Calculator
Screen a preliminary SBR model using documented project GPD, or homes or bedrooms multiplied by a project-confirmed flow allowance. No default residential allowance, equipment pricing or lifecycle-cost estimate is included.
Excel Checklist · 49 items
Site Feasibility Checklist
Organize 49 project and site checks, record unresolved items and prepare the information needed for an ASM engineering review.
Preliminary planning only—ASM engineering confirmation required. The toolkit does not constitute a final design, equipment selection, performance guarantee, quotation or regulatory approval. ASM and the project engineer must confirm project flow, loading, treatment requirements and equipment scope.
What you will learn
Answer the questions that decide a project early.
- 01
When modular treatment is a viable alternative to conventional construction.
- 02
How SBR and MBR approaches differ, and when project-specific engineering is required.
- 03
How to estimate preliminary design flow and identify an initial BIOASM model range.
- 04
What site, electrical, civil, permitting, operational, and discharge questions must be resolved.
Process
The four-phase BIOASM SBR cycle
ASM’s standard reference cycle lasts six hours, with four cycles per day. Final operating settings require project-specific confirmation.
- 01
Feed and aeration
1 hour
The feed pump and blower operate together.
- 02
Additional aeration
3 hours
Feeding stops while the blower continues. Total aeration is four hours, including Phase 1.
- 03
Settling
1 hour
Pumps and blower stop while solids settle.
- 04
Discharge and chlorine dosing
1 hour
The treated-water discharge pump and chlorine dosing pump operate together.
- Sludge removal. Excess sludge removal follows sludge observations and the operating plan.
- Controls. Standard analog time-clock manual/automatic operation with illuminated fault indicators. PLC, SCADA, communications and added instrumentation are optional and subject to quotation.
- Disinfection. Standard inline chlorine dosing does not include a separate chlorine-contact tank.
- Filtration (optional). Includes backwash equipment and requires treated-water storage when added.
The packaged system
Factory-built treatment, delivered as a module.
BIOASM PT-1000 in service
BIOASM PT-1000 SBR package: upper reference hydraulic capacity of approximately 52,834 GPD (200 m³/day). Primary settling, equalization, downstream treatment and site integration are defined for each project. Final selection requires ASM engineering confirmation.
ASM installation
Packaged treatment installation supplied by ASM. Site planning should account for the prepared foundation, incoming wastewater connections, power supply, and treated-water discharge route. Access for installation, inspection, and routine maintenance should be reviewed alongside the treatment layout. Final equipment scope and site integration require ASM engineering confirmation.
ASM installation
Factory-built package units sited near the load they serve. Project planning should establish the wastewater flow and characteristics, available footprint, and connections to the collection and discharge systems. Equipment access, electrical requirements, and operating arrangements also need review. Model selection and any supporting treatment stages are confirmed for each project by ASM.
ASM installation
Packaged units for sites where cast-in-place construction is impractical. Early feasibility review should consider delivery access, foundation requirements, available utilities, and the proposed discharge location. The site checklist helps capture these conditions and identify questions for the project team. Treatment configuration and installation requirements remain subject to project-specific engineering review.
ASM installation
Packaged treatment installation supplied by ASM. Each project needs a defined flow basis, an assessment of wastewater characteristics, and a review of local permitting and discharge requirements. Civil works, utility connections, and ongoing operating responsibilities should be established before final selection. Use the toolkit to organize preliminary inputs for an ASM technical review.
Controls and instrumentation
Standard controls: analog time-clock manual/automatic operation with illuminated fault indicators. PLC, SCADA and added instrumentation are optional and quoted separately.
Photography shows BIOASM packaged treatment installations. Final configuration, footprint, and equipment scope are project specific.
Manufacturer
Built by an established treatment manufacturer.
ASM designs and supplies water and wastewater treatment systems, with U.S. operations based in Houston, Texas.
Houston, TX
U.S. operations
130,000 sq ft
Production area
65+
Expert staff
450+
Completed projects
BIOASM PT-500 · factory-built single-module SBR package
Applications
Where modular treatment fits.
Residential subdivisions
Decentralized communities without access to municipal collection.
Hotels, resorts, RV parks
Seasonal and variable-load hospitality and campground projects.
Workforce & mining camps
Remote facilities requiring rapid deployment and relocation.
Municipal capacity
Interim or staged expansion of existing municipal treatment capacity.
Industrial applications
Selected industrial streams requiring project-specific evaluation.
Remote & island sites
Locations where conventional plant construction is impractical.
How to use the toolkit
Establish flow. Record conditions. Request a review.
01
Establish project flow
In the calculator, choose Project GPD and enter your documented design flow, or choose Residential calculation and enter homes or bedrooms with the matching allowance confirmed by your project engineer.
02
Record site conditions
Complete the checklist and identify items that still need confirmation, including wastewater characteristics, effluent requirements, utilities, access and permitting.
03
Request an ASM review
Send ASM your completed calculator, checklist and available project information. ASM reviews the treatment approach, equipment scope and remaining requirements before preparing a project-specific quotation.
Get the toolkit
Download the engineering toolkit.
One ZIP file with the engineer’s guide, the BIOASM sizing calculator and the site feasibility checklist.
ASM packaged installation- Engineer's GuidePDF · 47 pages
- BIOASM Sizing CalculatorExcel · BIOASM PT-50 to PT-1000
- Site Feasibility ChecklistExcel · 49 items
Instant download after submitting. ASM may contact you about your request.
FAQ & About ASM
Before you download.
ASM designs and supplies water and wastewater treatment systems, with U.S. operations based in Houston, Texas. The BIOASM standard SBR range covers PT-50 through PT-1000 for decentralized projects. The toolkit is planning-level reference material intended to support early evaluation.
Download the toolkitFree · instant download after submitting
Preliminary planning only — ASM engineering confirmation required. This toolkit supports conceptual screening and does not constitute a final design, equipment selection, performance guarantee, quotation or regulatory approval. ASM Water Treatment Systems and the project engineer must confirm capacities, dimensions, electrical requirements, process configuration and treatment performance for the specific project.