Changes

*'''UV Lamp:''' Disinfects rainwater by sterilizing bacteria and viruses with UV radiation. Note that UV disinfection does not have any residual effect that can be harmful to humans or aquatic life.

*'''UV Lamp:''' Disinfects rainwater by sterilizing bacteria and viruses with UV radiation. Note that UV disinfection does not have any residual effect that can be harmful to humans or aquatic life.

*'''Chlorine Pump:''' Provides a chlorine residual of 0.5 mg/L that can ensure that rainwater on the roof surface is protected from recontamination.

*'''Chlorine Pump:''' Provides a chlorine residual of 0.5 mg/L that can ensure that rainwater on the roof surface is protected from recontamination.

=='''Station 4 – Basement Cistern and Treatment System'''==

=='''Station 4 – Basement Cistern and Treatment System'''==

[[File: Basement-Treatment-System-v1.PNG | thumb | The basement treatment system treats rainwater from the cistern on its way to the toilets in Building A. (Photo Source: CVC, 2023)]]

[[File: Basement-Treatment-System-v2.PNG | thumb | The basement treatment system treats rainwater from the cistern on its way to the toilets in Building A. (Photo Source: CVC, 2023)]]

When rainwater is drained from the roof surface into the basement, it is collected by a rainwater cistern (CVC’s old, passive system). Water from this cistern can be pumped through the SBR’s second CSA-compliant treatment system. The following are the main treatment components of this basement system:

When rainwater is drained from the roof surface into the basement, it is collected by a rainwater cistern (CVC’s old, passive system). Water from this cistern can be pumped through the SBR’s second CSA-compliant treatment system. The following are the main treatment components of this basement system:

*'''Cistern Level Sensor:''' Measures elevation of rainwater in the cistern. This is useful for determining if the cistern needs to be replenished.

*'''Cistern Level Sensor:''' Measures elevation of rainwater in the cistern. This is useful for determining if the cistern needs to be replenished.

*'''Rooftop temperature Sensors:''' Measures the temperatures above the building and on the inside of the roof assembly (below the concrete roof slab). These sensors compare the heat gradient across the roof assembly where the SBR is located and where a conventional roof system remains. By doing so, the cooling benefit and energy savings of the SBR can be calculated.

*'''Rooftop temperature Sensors:''' Measures the temperatures above the building and on the inside of the roof assembly (below the concrete roof slab). These sensors compare the heat gradient across the roof assembly where the SBR is located and where a conventional roof system remains. By doing so, the cooling benefit and energy savings of the SBR can be calculated.