Rainwater Harvesting Systems

Rainwater Harvesting System

Rainwater Re-use is the technique of collection and storage of rainwater in tanks or natural reservoirs directly from rainwater runoff – be it rooftop capture, surface runoff, infiltration capture – and the proceeding filtration and pumping of this water into applications of non-potable water.

Collecting Rainwater for re-use has become a common step in the construction of every water system for homes, commercial buildings, industrial sites and about every other urban aspect of society. The Re-use of rainwater provides an alternate source to mains water, allowing less use of our precious water resources and reducing the load on our environment.

According to the Australia Bureau of Statistics, one in four households utilise the benefits of Rainwater harvesting systems along with the statistic that 177 Billion litres (9% of residential water usage) comes from rainwater and is the 3rd largest source of water in Australia – after surface and groundwater. It is obvious that Rainwater harvesting has become and vital part of Australia’s Water usage and will only continue to grow.

Rainwater Harvesting System

Rainwaters harvesting systems produce three main benefits over the life of a systems:

  1. Rainwater Harvesting reduces the cost of water infrastructure in urban areas
  2. Rainwater Harvesting dramatically reduces house hold water usage
  3. Rainwater harvesting reduces costs of stormwater management systems and maintenance

The applications of these stormwater harvesting systems has some restrictions however, with the Australian Government requiring that the Non-potable water that these systems produce, cannot be used in any form of consumption. This then leads to the main applications of Rainwater harvesting systems as:

  • Urinal and toilet Flushing
  • Cooling Water towers
  • Laundry and washing processes
  • Irrigation

The Process of rainwater harvesting involves several important and necessary steps to ensure a complete harvesting and re-use. These are collection of rainwater, pumping of rainwater, filtration of rainwater and then the ultimate usage of the water. We at Austere Pumps supply the highest quality products to make up the entire Rainwater Harvesting system from beginning to end.

Tanks and High Capacity Storage Systems

Austere Pumps supply the highest quality storage, detention and retention systems to act as the rainwater capture tanks. These tanks cane come in low to mid range capacity above ground tanks, be it FRP tanks or Polyethylene tanks or to our entire range of underground Horizontal Storage Tanks – the MAXISTORE tanks.

The Horizontal Storage Tank systems are high capacity storage systems constructed from fibre reinforced polymers and manufactured using our proven chop hoop filament wound construction techniques. With the inclusion of corrosion resistance layers our FRP horizontal storage tanks can last for decades without failure.

Tanks and High Capacity Storage Systems
Tanks and High Capacity Storage Systems

Filtration Systems

The filtration systems that Austere Pumps utilise are designed to provide the highest quality filtration, along with having an efficient usage and able to withstand the pressures of any pump that it is equipped with. Austere Pumps filtration systems that are equipped with the rainwater harvesting systems usually come as a three-phase system.

The first system usually is designed as an automatic backwash filter system, which is designed in the case of AUSTERE PUMPS Rainwater harvesting system as the AUSTERE FILTER, a unique and complex system to ensure maximum filtration.

The second phase of the filtration often involves single, dual or quadruple cartridge filters designed for high efficiency screening of larger particles and finer particles being filtered out as the pores of the elements become clogged by the large debris.

The third stage is using UV disinfection systems.

These systems provide rapid and efficient inactivation of microorganisms through physical processes. When the bacteria and viruses are exposed to the wavelengths of the UV they are essentially killed and prevented from causing any water infection or water pollution.

Rainwater Harvesting System

Pumping systems

We at AUSTERE Pumps have strong relationships with a wide range Pump companies, and through this we are able to provide the best pricing, quality and range on the market. With our rainwater harvesting systems we usually provide options of vertical multistage systems that are installed as an entire unit, with pumps built into the plinth, or we can develop options that utilises submersible pumps with interconnecting pipework provided by contractors.

Our pumps can hence have a wide range of duty possibilities, range from high head low flow rate, to high flow rate systems as required.

Our Range

MAXI-TREAT SYSTEMS – VERTICAL MULTISTAGE PUMPS

MAXI-TREAT Rain water Treatment re-use system, capable of delivering duty as required utilises vertical multistage pumps, with setup and amount of pumps as required. These systems can come with an of the below options, with exclusions and inclusions as per customer requirements.

FILTRATION:

  • Auto-backwash Screen Filter, 40mm automatic self-cleaning filter,
  • 100 micron stainless steel screen with silver coating.
  • High efficiency low waste backwash cycle.
  • Timer based backwash activation.
  • Degree of soiling visible through clear filter housing.
  • BMS output for filter fault.
  • Cartridge Filters:
  • 2 stage filtration system incorporating s with easily removable housings. amount and sizing as required
  • Micron rating: 20 micron x 1, 5 micron x 1.
  • Filter status monitor with ‘cartridge change’ indicator and BMS output.
Rainwater Harvesting System

ACCUMULATOR TANK:

  • 1 x litre pressure accumulator tank. Amount and sizing as required

ULTRAVIOLET DISINFECTION:

  • Davey stainless steel ultraviolet disinfection system capable of treating at the above flow rate amount and sizing as required
  • High intensity lamp with min 9000 hours design life.
  • High purity quartz sleeve.
  • UV system monitor with ‘power on’ indicator and audible and visual lamp fail alarms.
  • 40mm water meter with pulse output fitted to pump discharge line on rainwater and mains water line. Amount and sizing as required

PIPEWORK AND VALVES:

  • All interconnecting pipework will be incorporated in the pumpset, including:
  • Bronze lever operated ball-type isolation valve on pump discharge and mains water lines.
  • solenoid valve and dual check valve on mains water line. Amount and sizing as required
  • All stainless steel or bronze unions and fittings as required for the incorporation of all components and to facilitate ease of maintenance.

CONTROLLER:

  • Single pump rain/mains changeover system controller incorporating:
  • IP65 powder coated metal enclosure
  • Power on, rainwater and mains water LED status indicators
  • System test button
  • Automatic changeover to mains water on low level in storage tank, pump fault or power failure.
  • DOL pump starter

MOUNTING:

  • All the above components will be mounted in a heavy duty FRP weather and vandal resistant enclosure with lockable access door

PTI-TREAT SYSTEMS – SUBMERSIBLE PUMPS

Opti-Treat Rain water Treatment re-use system, capable of delivering duty as required utilises submersible pumps. These systems can come with an of the below options, with exclusions and inclusions as per customer requirements.

Rainwater Harvesting System

FILTRATION:

  • Auto-backwash Screen Filter automatic self-cleaning filter, amount as required
  • 100 micron stainless steel screen with silver coating.
  • High efficiency low waste backwash cycle.
  • Timer based backwash activation.
  • Degree of soiling visible through clear filter housing.
  • BMS output for filter fault.
  • Cartridge Filters – 2 stage filtration system cartridge filters with easily removable housings, amount and sizing as required
  • Micron rating: 20 micron x 1, 5 micron x 1.
  • Cartridge Filter status monitor with ‘cartridge change’ indicator and BMS output.

ACCUMULATOR TANK:

  • 1 x litre pressure accumulator tank, size as required

ULTRAVIOLET DISINFECTION:

  • stainless steel ultraviolet disinfection system capable of treating at the above flow rate, amount as required
  • High intensity lamp with min 9000 hours design life.
  • High purity quartz sleeve.
  • UV system monitor with ‘power on’ indicator and audible and visual lamp fail alarms.
  • 2 x water meter with pulse output fitted to pump discharge line on rainwater and mains water line.

PIPEWORK AND VALVES:

  • All interconnecting pipework will be incorporated in the pumpset, including:
  • Bronze lever operated ball-type isolation valve on pump discharge and mains water lines.
  • Solenoid valve and dual check valve on mains water line.
  • All stainless steel or bronze unions and fittings as required for the incorporation of all
  • components and to facilitate ease of maintenance.

CONTROLLER:

  • Single pump rain/mains changeover system controller incorporating:
  • IP65 powder coated metal enclosure
  • Power on, rainwater and mains water LED status indicators
  • System test button
  • Automatic changeover to mains water on low level in storage tank, pump fault or power failure.
  • DOL pump starter

HYDROSTATIC LEVEL SENSOR:

  • The pumpset will be fitted with a stainless steel hydrostatic level transducer for mounting in the storage tank. The transducer will have the ability to provide all the required set points for fully automated operation of all components and provide highly accurate liquid level information to the controller.

DIGITAL LEVEL DISPLAY:

  • Tank level indication system incorporating:
  • Hydrostatic level transducer with 10m cable.
  • Tank level display panel in % or mm or Litres
  • Requires 240V power supply

MOUNTING:

  • All the above components will be mounted in a heavy duty FRP weather and vandal resistant enclosure with lockable access door

TESTING AND MANUALS:

  • The complete system will be wired and performance tested
  • Installation and Operation manuals will be Provided
  • Work To Be Completed By Others:
  • Unloading and installation on site.

Power supply to control panel.

Onsite Commissioning