Filtrazione Reflui per Impianto di Trattamento Regionale

Wastewater Filtration for Regional Treatment Plant in Australia

A regional wastewater treatment plant in Western Australia has resolved operational and water quality issues with the installation of a pile cloth drum filter supplied by MAK Water, a MITA WT distributor in Australia. The system eliminated nozzle blockages and reduced suspended solids to 5-10 mgTSS/L, allowing for effective reuse of the effluent. It has ensured low operating costs (<4.6 kWh/day) and minimal disruption during installation.

  • Cloth filtration system treatment capacity: 30 m³/h
  • Filtered effluent quality: 5-10 mgTSS/L
  • System energy usage: Less than 4.6 kWh/day
Company
MAK Water (MITA WT distributor in Australia) - Regional Australian wastewater treatment plant (end client)
Year
2024
Location
Western Australia
Interlocutor type
MAK Water (MITA WT distributor in Australia)
Scope of application
Municipal wastewater treatment
Application field
Municipal public services (regional treatment plant)
Story in a nutshell
A regional treatment plant had problems with inefficiency and frequent downtime due to the clogging of spray nozzles, caused by the variable quality of the wash water
List of customer requirements
Install a filtration system to treat the pond effluent and allow for its reuse, respecting space and hydraulic constraints and minimizing disruption during installation

Input flow rate
30 m³/h
Input SST
Up to 100 mg/L, with high variability and high content of algal solids
Other technical needs
- Respect hydraulic and tight space constraints
- Ensure minimal disruption during installation
Upstream treatment chain
Existing pond feed pump
Technologies supplied
No 1 pile cloth drum filter: 6 m² surface area, 5µm nominal microfiber filter media, and 316 stainless steel framework
Output TSS
5-10 mgTSS/L
Resource usage
Very low resource usage (<4.6 kWh/day)
Services
Off-site equipment design and fabrication (pre-assembled) to minimize on-site installation work
Key to Success
- Elimination of nozzle clogging and downtime
- Consistent effluent quality for reuse
- Low operating costs of the installed system
- Simple installation with minimal disruption

1. Context of installation

A regional wastewater treatment plant in Western Australia was facing inefficiencies and interruptions due to the variable quality of the wash water reused from a pond.

This caused frequent blockages of the nozzles and of the sludge dewatering systems, severely impacting operations. The water authority was seeking a filtration solution for the pond effluent, with stringent space and hydraulic constraints, and that would ensure minimal disruption during installation.

2. Proposed solution

MAK Water, a distributor for MITA Water Technologies in Oceania, was commissioned to supply a pre-assembled pile cloth drum filter.

This system, which represents one of the key technologies of MITA Water Technologies (part of the Axius Water group), offers a capacity of 30 m³/h with a 6 m² filter surface, using 5µm nominal microfiber media with a 316 stainless steel structure. Its installation upstream of the reuse tanks utilized gravity and the existing pumping infrastructure without needing modifications.

MITA WT cloth filters are valued for their very high solids removal efficiency, low energy use (gravity filtration, minimal backwashing), operational continuity even during washing, and remarkable flexibility in handling variable loads.

3. Results and key success factors

The installation of the drum filter brought immediate and significant benefits. The problem of spray nozzle blockages was completely eliminated, resolving the associated downtime. The plant now consistently achieves a filtered effluent quality of 5-10 mgTSS/L, allowing for the effective reuse of water for site reticulation and equipment wash-down.

Operating costs are extremely low (<4.6 kWh/day), with minimal operator intervention required. As the system was pre-assembled off-site, the installation was simple, causing minimal disruption to the plant’s main operations.

These results highlight how the solution not only resolved an operational criticality but also improved the overall efficiency and sustainability of the plant, in line with Axius Water’s goals of improving water quality and promoting the reuse of treated water.

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