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Wastewater Systems for Public Facilities

Sustainable Water Solutions
for Thriving Communities

Tailored Wastewater Systems for Municipalities & Public Services
home > Solutions > Public Facilities
Decentralised sewage treatment for public restrooms, parks, scenic areas, stadiums and transport hubs — buried or containerised, sized from 1 to 1,000 m³/d, and built to absorb visitor peaks while running unattended with remote monitoring.
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Public Restrooms Parks & Scenic Areas Stadiums & Venues Transport Facilities

Which Wastewater System Fits Your Site?

Series Best For Daily Capacity Process Installation
Mejec Scavenger A single villa, guesthouse or remote restroom 5–10 people CASS Compact standalone unit, solar-ready
Mejec Johkasou-SA One building, an annexe or a small facility 1–5 m³/d MBBR + clarifier + disinfection Fully buried — surface stays usable
Mejec Johkasou-SB A building cluster, canteen or mid-size site 20–100 m³/d AAO + MBBR Buried or ground-mounted
Mejec JM Series Whole-site treatment, water reuse targets, high-ammonia or industrial streams 50–1,000 m³/d per unit, combinable to 10,000 MBR / MBBR · MABR · industrial · seawater RO Containerised, plug-and-play, relocatable
Mejec Pump Station Sites that cannot drain to the sewer by gravity 480–18,960 m³/d · flow 20–790 m³/h Collection and lifting Buried barrel, Ø1.2–6.5 m
Not sure which capacity you need? Send us your daily flow or the population the site serves, the buildings you need to cover and your local discharge standard — we will size the system and quote within 24 hours.
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Public Facility Wastewater Solutions

Protecting Public Health and Our Planet's Water

Water is the lifeblood of any community. Ensuring its purity and sustainable management is not just an operational task—it's a public trust. At Mejec, we partner with municipalities, public works departments, and service providers to deliver robust, intelligent wastewater treatment solutions. Our systems are engineered to meet the unique demands of public service, transforming wastewater into a resource and safeguarding the environment for generations to come.
Sustainable wastewater treatment protecting community water resources
Public restroom wastewater treatment unit for parks and outdoor facilities

Mejec Public Restroom Wastewater Treatment Solution

Public restrooms in parks, scenic areas, transportation hubs, and outdoor facilities require reliable wastewater treatment to maintain hygiene and protect the surrounding environment. Mejec wastewater treatment systems are designed to efficiently treat domestic wastewater with stable performance and compact installation. Using integrated biological treatment technology, the system effectively reduces pollutants and ensures compliant discharge. Ideal for standalone public restrooms and remote sanitation facilities, Mejec solutions support cleaner environments and sustainable sanitation management.
CASS process 5–10 people 0.7 × 0.7 × 1.26 m 70 kg <40 W installed COD <60 · BOD₅ <20 · SS <20 mg/L Solar-ready, 50 W Irrigation or direct discharge

Mejec Park & Scenic Area Wastewater Treatment Plant

Parks and scenic areas require reliable wastewater treatment to protect natural environments while supporting public facilities such as restrooms, visitor centers, and catering areas. Mejec wastewater treatment systems are designed to efficiently handle domestic wastewater with stable performance and compact installation. Using integrated biological treatment technology, the system effectively reduces pollutants and ensures compliant discharge. Ideal for parks, tourist attractions, and outdoor recreational areas, Mejec solutions help maintain clean surroundings and support sustainable environmental management.
1 / 2 / 3 / 5 m³/d Fully buried — no surface footprint 180–350 kg 0.025–0.075 kW installed MBBR + clarifier + disinfection
Park and scenic area wastewater treatment plant buried below the landscape
Stadium and event venue wastewater treatment handling peak visitor loads

Mejec Stadium & Event Venue Wastewater Treatment

Sports venues and public event facilities generate significant volumes of domestic wastewater during peak visitor periods. Mejec wastewater treatment systems are designed to handle fluctuating loads with stable and efficient performance. Through integrated treatment technology and compact system design, the solution effectively reduces pollutants and supports compliant discharge. Ideal for stadiums, arenas, and large event venues, Mejec systems help maintain hygienic environments while supporting sustainable facility operations.
SB20–SB100 · 20–100 m³/d AAO + MBBR process 0.72–1.74 kWh per m³ treated Φ2.2 × 5.3–11.5 m 3–9 t Buried or ground-mounted

Mejec Transport Facility Wastewater Treatment Sustainable Water Management

Transportation hubs generate continuous domestic wastewater from restrooms, service areas, and passenger facilities. Mejec wastewater treatment systems are designed to handle fluctuating loads with stable and efficient performance. Using integrated biological treatment technology and compact system design, the solution effectively reduces pollutants and ensures compliant discharge. Ideal for airports, railway stations, highway service areas, and other transit facilities, Mejec solutions support clean environments and reliable wastewater management for high-traffic transportation spaces.
50–600 m³/d per unit Combinable to 10,000 m³/d UV disinfection kills 99.9% of bacteria Effluent BOD₅ 10 · NH₃-N 5 · SS 5 mg/L Faecal coliform ≤50 CFU/100 mL 6–17 kW Carbon and stainless steel, acid and corrosion resistant
Transport facility wastewater treatment system for terminals and service areas

Why Mejec

  • Environmental compliance icon
    Environmental Protection and Compliance
    Every system is engineered to the discharge standard that applies at your site, with disinfection built into the treatment train rather than bolted on afterwards.
  • Contaminant removal icon
    Efficient Contaminant Removal
    Mature biological processes strip organics, suspended solids and ammonia nitrogen from the stream, and hold that performance when load and water quality fluctuate.
  • Low operating cost icon
    Operational Cost-Effectiveness
    Factory prefabrication removes most of the civil works, and optimised processes keep both energy draw and sludge disposal down across the life of the plant.
  • Scalable modular capacity icon
    Adaptability and Scalability
    Choose the process to suit your influent, then add modules in parallel as demand grows — capacity expands without rebuilding what is already running.
  • Water recovery and reuse icon
    Resource Recovery and Reuse
    Treated effluent is clean enough to put back to work for irrigation, flushing and landscape water, instead of being discharged and paid for twice.
  • Automated control and remote monitoring icon
    Automation and Low Maintenance
    PLC control with remote monitoring, fault alarms and unattended operation, so a site stays compliant without a dedicated operator on the payroll.

Where It Fits in Public Infrastructure

  • Remote public restroom with a solar-ready sewage treatment unit
    Remote Restrooms
    No sewer, no mains power worth running, and nobody on site to operate anything.
    LD Scavenger, solar-ready →
  • Scenic park area with buried wastewater treatment beneath the grounds
    Parks & Scenic Areas
    Protected landscape where nothing above ground is acceptable and odour would be fatal.
    Buried Johkasou SA →
  • Stadium wastewater treatment system sized for event day peaks
    Stadiums & Venues
    Near-zero flow for weeks, then thousands of people in a three-hour window.
    Johkasou SB →
  • Transport hub wastewater treatment container installation
    Transport Hubs
    Continuous flow from restrooms and service areas, and no tolerance for downtime.
    Containerised MBR →

Delivering public water infrastructure?

We manufacture in our own 30,000 m² plant and supply municipalities, public agencies, EPC contractors and distributors across 40+ countries.
  • Process customisation — CASS, AAO+MBBR, MBR, MBBR or MABR selected to match your influent
  • Factory prefabrication cuts the project timeline by roughly 30–50%
  • MOQ 1 unit — sample and trial orders welcome · Lead time 15 days
  • Certifications: CE · ISO · NSF · UL · GCC · factory ISO 9000
  • 100+ proprietary patents, including 17 core invention patents
  • Regional exclusivity available for qualified partners
  • PLC control cabinets with SMS and WeChat alarm push, remote monitoring and QR-code service history
  • 20+ years in water treatment · own 30,000 m² plant · supplying 40+ countries
  • LD-DeepDragon smart operations platform for automated design, budgeting and network operation
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Frequently Asked Questions

How do these systems handle facilities that are busy only a few days a month?

The control system automatically identifies inflow volume and drops the blower into an energy-saving mode when load falls away, then ramps back up on demand. The AAO+MBBR and MBR processes also tolerate shock loads well, which is what a stadium or a seasonal scenic area actually needs.

Can a unit run where there is no mains power?

The LD Scavenger draws under 40 W and is offered with a 50 W solar power system, which makes it viable at trailhead restrooms, campsites and other off-grid public facilities. It uses a CASS process and produces effluent at COD below 60 mg/L, BOD₅ below 20, suspended solids below 20, ammonia-nitrogen below 15 and total phosphorus below 1 mg/L.

Who operates the plant day to day?

Nobody needs to be on site. The PLC control cabinet supports manual, automatic and remote operation, pushes fault alarms by SMS or WeChat, records power consumption and inflow and outflow, doses chemicals automatically based on pH and stores its maintenance history behind a QR code on the cabinet door.

Can a containerised unit be moved to another site later?

Yes. The containerised range keeps the standard container form and its transport function, so units can be relocated and reused. That suits temporary venues, phased public works and emergency deployment.

Is there support for planning a whole network rather than a single site?

The LD-DeepDragon smart operations platform assists with automated pipeline network design from elevation data, rapid investment budgeting and integrated plant-and-network operation. Compared with traditional design workflows it improves efficiency by more than 50%.

Tell us about the site, and we will size the system.

Send your peak visitor numbers, the facilities you need to cover and your local discharge standard for a system proposal, or ask about partnering with Mejec in your market. Pick Product or Distributor at the top of the form below — we reply within 24 hours.

If you have any questions, please feel free to leave us a message

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