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Insulated Packaged Sewage Treatment Units

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Above-ground packaged units with external insulation for reliable winter biology.

Project Background

Above-ground packaged units on this site needed to keep biological treatment stable through cold winters.

Our Solution

Externally insulated integrated units so tank temperature stays in the working range for the biology without heating.

Process Train

  1. 1Screening
  2. 2Biological stages
  3. 3Sedimentation
  4. 4Disinfection
  5. 5Discharge

Ref. D-034. Client identity is withheld under our client-confidentiality policy. Capacity is shown as a capacity class (design value rounded up to the next 5 at its second significant digit).

How We Deliver

Projects of this type are delivered in the nine stages below. Installation, commissioning and other on-site stages follow each contract's scope. Every stage within our scope produces a written record that we keep on file.

  1. 1 Design basis confirmationAverage and peak flow, influent or gas data, discharge or reuse target Record producedDesign basis sheet
  2. 2 Process & mechanical designProcess calculations, equipment selection, layout and piping Record producedCalculation book, P&ID, general arrangement
  3. 3 Manufacturing & quality controlMaterial and in-process inspection of the main equipment Record producedMaterial & QC records
  4. 4 Factory acceptance test (FAT)Trial run against the design parameters before dispatch Record producedFAT record
  5. 5 Packing & dispatchPacked, marked and shipped against the equipment list Record producedPacking list
  6. 6 Installation or supervisionPer contract scope Record producedInstallation record
  7. 7 CommissioningStart-up, parameter tuning and interlocks Record producedCommissioning log
  8. 8 Performance verificationEffluent or emission checked against the design basis Record producedPerformance test record
  9. 9 Training, handover & after-salesOperator training, document handover, after-sales support Record producedO&M manual, training record

Planning a similar project? Start with these six parameters

  1. FlowDaily average and peak (m³/day and m³/h)
  2. Influent qualityCOD, BOD₅, TSS, pH and anything unusual
  3. Discharge targetThe standard you must meet, or the reuse purpose
  4. Operating hoursContinuous or batch; seasonal changes
  5. Site & civil scopeFootprint, power supply, who builds the tanks
  6. Project stageBudgeting, tender, or ready to order

Send your parameters — initial process recommendation within 24 hours

Equipment Used in This Project

Underground Package Sewage Treatment Plant (WSZ Series)

Underground Package Sewage Treatment Plant (WSZ Series)

WSZ series underground integrated sewage treatment plant combines anoxic/aerobic (A/O) biological contact oxidation with sedimentation and disinfection in a single buried package unit. Fully automated with no operator required, it handles 1–80 m³/h for residential communities, hotels, hospitals, factories, and rural areas. Can be installed below grade with landscaping above, or mounted on a trailer for mobile deployment.

Frequently Asked Questions

The process train was: Screening → Biological stages → Sedimentation → Disinfection → Discharge.
Yes. Send us your daily and peak flow, influent quality, discharge or reuse target, operating hours and site constraints, and our engineers will reply with an initial process recommendation within 24 hours.

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Planning a similar project?

Share your flow, influent quality and discharge target — our engineers respond within 24 hours.

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