During heavy rainfall events, stormwater runoff can carry a significant amount of organics, oils, nutrients, and metals straight to the stream. To meet Auckland’s stormwater regulations, Hynds and LDE | Land Development & Engineering together designed the necessary stormwater treatment for a carpark extension to remove fine sediment, nutrients, metals, oils, organics, and organic-trapped bacteria before discharging into the stormwater network.
To achieve this goal, an Up-Flo® Filter with fifteen modules was designed to meet the required criteria. Collaboration between Hynds, LDE, and Elite (contractor) resulted in the installation of an effective solution for treating stormwater runoff from the carpark.
Hynds Up-Flo® Filter combines a patented upwards flow path with a unique drain-down system to achieve proven treatment of water. Stormwater is directed into the manhole sump, where the water coming downstream passes through the media bags (filters) and gets treated.
This type of filter was selected due to its effectiveness in treating a large volume of water while offering durability, longevity, and structural integrity. The filters ensure a more sustainable stormwater management solution.
Hynds, known for high-quality products and comprehensive support, provided the perfect solution for the installation of a device with a 2550mm diameter manhole and 15 modules. The installation process was carried out smoothly and completed in less than an hour.
Some Attributes of the Up-Flo are as follows:
- Effectively removes fine sediments, nutrients, heavy metals, hydrocarbons, and other pollutants from stormwater.
- Can be customised to fit various site conditions and treatment requirements, making it suitable for a wide range of applications.
- Operates with a high pollutant removal efficiency, even under varying flow rates, ensuring consistent performance.
- Uses an innovative up flow process that maximises contact between the stormwater and filter media for superior filtration.
- Compact design allows for installation in tight spaces, making it ideal for urban and space-constrained areas.
- Designed for simple and cost-effective maintenance with easy access to the filter bags for replacement.
- Handles a range of flow rates, with bypass features to manage peak stormwater flows without compromising system integrity.
- Can be configured to handle small or large volumes of stormwater, depending on site-specific needs.
- Built with high-quality materials to withstand harsh environmental conditions and ensure a long service life.
- Meets water quality regulations, ensuring environmentally responsible stormwater treatment.
