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7 models · Sewage Plants

Sewage Treatment Plants

A package sewage treatment plant is a factory-built, pre-assembled system that treats domestic or municipal wastewater biologically so it can be safely discharged or reused. These plants are used by villages, resorts, construction camps, schools, hospitals, industrial parks and developers who need reliable treatment where a central sewer connection is unavailable or impractical.

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Sewage Plants: available models

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How it works

How sewage treatment plants work

Raw sewage first passes through screening and an equalization tank that buffers peak flows. It then enters biological reactors where microorganisms consume organic matter and nutrients. In an A2O configuration, anaerobic, anoxic and aerobic zones work in sequence to remove BOD, nitrogen and phosphorus. MBBR plants add free-floating plastic carriers that host a dense biofilm, increasing treatment capacity in a smaller tank. MBR plants replace the secondary clarifier with submerged membranes that physically separate solids, producing a high-quality effluent suitable for reuse. Treated water is then disinfected, and excess sludge is wasted to a holding tank for dewatering.

Selection guide

How to choose the right model

  1. 01

    Design flow and peak factor

    Size the plant on average daily flow and the expected peak, since small communities often see large daily fluctuations. An equalization tank helps smooth these variations.

  2. 02

    Influent quality

    Know the expected BOD, COD, suspended solids, ammonia and phosphorus levels. Industrial contributions, grease or high-strength streams may require pretreatment.

  3. 03

    Discharge or reuse standard

    The required effluent limits largely determine the process choice. MBR suits strict limits and reuse, while MBBR and A2O are robust options for conventional discharge.

  4. 04

    Site and installation constraints

    Consider available footprint, whether the plant will be above or below ground, and transport limits. Containerized units simplify shipping and allow faster installation.

  5. 05

    Operation and maintenance capacity

    Match the level of automation and maintenance tasks, such as membrane cleaning or blower servicing, to the skills available on site.

Typical applications

  • Rural villages and small towns
  • Hotels, resorts and residential developments
  • Construction and mining camps
  • Schools, hospitals and public buildings
  • Industrial parks and factory domestic sewage
  • Highway service areas and remote facilities
  • Treated water reuse for irrigation and flushing

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FAQ

Sewage Treatment Plants: FAQ

What is the difference between MBR and MBBR?

MBR uses submerged membranes to separate treated water from biomass, producing very low suspended solids. MBBR uses moving plastic carriers that grow biofilm and still relies on a clarifier or filter for solids separation.

Can a package plant meet water reuse requirements?

Yes, when the process is selected for reuse. MBR followed by disinfection is commonly used where treated water will be reused for irrigation, toilet flushing or cooling.

Can the plant be installed underground?

Many integrated plants can be buried or partially buried to save space and reduce noise and odor. Access for maintenance and protection against buoyancy must be considered in the design.

What information is needed for a quotation?

Provide the daily flow rate, influent characteristics, required effluent standard and site conditions. If influent data is not available, the number of people served is a useful starting point.

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Need sewage plants for your site?

Tell us the flow, the water or sludge you are treating and the result you need. A process engineer sizes the equipment and replies within one business day.

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