Brooms Head, NSW


Kubota MBBR


Consult, design, and construct STP

True Water upgraded the Brooms Head Bowls Club Wastewater Treatment Plant (WWTP) because the old system had reached the end of its operational life. The client submitted a Development Application to expand operations, which included additional function facilities and eight cabins for accommodation. Therefore, amendments to the existing Section 68 approval were necessary.

True Water provided specialist sewage services for the WWTP upgrade. This included a thorough site inspection to assess current conditions and understand environmental factors. Subsequently, our team prepared an Onsite Sewage Management (OSSM) report. This document outlined the proposed design of the sewage treatment plant, ensuring compliance with regulatory conditions and streamlining the approvals process.

Our team supplied and installed a Kubota Moving Bed Biofilm Reactor (MBBR). This system provides advanced treatment, protecting public health and the environment. This was crucial given the venue’s location. Brooms Head, in northern New South Wales (NSW), is a coastal hotspot with ecological importance, featuring coastal and marine environments, diverse habitats, and abundant biodiversity.



Sewage treatment plant buffer zones

Sewage treatment plant buffer zones are critical for safe wastewater management. Buffer zones are an important planning practice that need to be adhered to when looking at locating wastewater infrastructure in an area of environmental significance. True Water provided specialist sewage consultancy and designed the sewage treatment plant. First, we conducted a thorough site inspection, allowing our environmental consultants to understand site conditions and environmental factors. Next, we performed water balance modeling to calculate water usage and effluent creation.

After the assessment, True Water developed the concept design for the sewage treatment plant. This design focused on enhancing operational efficiency and minimising environmental impact, reflecting our commitment to sustainable wastewater management.

Approximately 500 meters west of the venue is Cakora Lagoon. This habitat supports diverse flora and fauna. The waterbody maintains the health of surrounding coastal and marine environments through water filtration, nutrient cycling, and sediment trapping. It also manages floodwaters during heavy rains by temporarily storing excess water, reducing flooding risks to nearby areas.

The Kubota WWTP was precisely installed by True Water technicians.
The 15,000-litre concrete buffer storage tank was installed per council specification.

Kubota provides advanced and reliable treatment

True Water designed the WWTP to accommodate the site’s annual average daily flow of 2,424 liters per day. With the addition of new cabins, this flow was projected to increase to 4,164 liters per day. Therefore, True Water engineered the system to handle variable flows peaking at 8,000 to 10,000 liters per day, as well as high-strength sewage. The design included the repurpose and reuse of some of the existing infrastucture, along with the installation of a new treatment plant.

First, we pumped out and sterilised the existing STP before decommissioning it. Next, we reconfigured the sewage pumpwell to include a 5,000-liter buffer capacity. A 15,000-liter Buffer Storage Tank was then installed as per local council specifications, providing a total buffering capacity of 20,000 liters. To complete the treatment chain, our team installed the world-leading Kubota HCZ-50 Moving Bed Biodilm Reactor biological treatment plant.

This advanced system provides reliable treatment to protect public health and the environment. The MBBR system minimises upfront and long-term costs, offering an efficient and cost-effective wastewater treatment solution. Furthermore, it supports future growth, prevents odours, and minimises visual impact. It ensures high-performance treatment that safeguards public health and the environment. As a result, the minimum buffer distance could be used to adhere to regulations.

Effluent dispersal with engineered mounds

Effluent dispersal management for the site uses engineered mounds. This method provides tertiary treatment through disinfection and nutrient reduction to meet Class A+ standards. Moreover, engineered mounds offer a safe, cost-effective method for final effluent polishing and wet weather storage. For this highly constrained site, the combination of further polishing and a small footprint made this method of dispersal the best choice.

Key design considerations for the Effluent Dispersal Area (EDA) included site use, proximity to ground and surface water, and high permeability soils. The EDA, with a total basal area of 252m², is located at the furthest practical distance from Lake Cakora. Additionally, surface runoff is directed to shallow swale drains to convey water away from the mounds. Importantly, this limits the amount of stormwater running across the dispersal area and into the lake catchment.

A vegetative screen of Lomandra and Vetiver Grass surrounds each mound, aiding in evapotranspiration and nutrient uptake. Furthermore, certified maintenance technicians provide 24-hour asset management. TELEmi remote monitoring offers real-time data to minimise maintenance costs and ensure compliant WWTS operation. These design features and management arrangements ensure the system operation does not impact patrons of the club, with the plant out of site and out of mind. Likewise, the surrounding environment is protected for the enjoyment of all homeowners and visitors to Brooms Head.

True Water's WWTP provides advanced treatment to protect public health and the environment.

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