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Off grid rainwater harvesting system in Kwazulu Natal

Posted by Use-Rainwater Admin on

Our company supplied the equipment for the the installation an off grid rainwater harvesting system at an estate on the KwaZulu Natal south coast. The property has no municipal water connection and will rely in totality on rainwater as a source of potable water. The property has multiple buildings, roof shapes and levels. A system was designed where rainwater are harvested of multiple buildings into intermediate tanks and then transferred into a central tank storage system. Prior to the installation all gutters were upgraded From the central rainwater tank storage system, rainwater is treated on demand to potable standard and supplied to the various dwellings on the property.

Due to the leafy and bush environment WISY primary rainwater filters were installed to act as first flush systems and to remove any leaves leaves and debris from the rainwater as it was harvested. Harvested rainwater is recovered in an intermediate tank for automatic transfer to to a central water storage area.

A WISY WFF150 unit recovers water of the main shed roof and was designed for a 95% recovery efficiency at a maximum rain intensity of 30mm per hour.

A central area contains four interconnected 10000l tanks. These tanks are connected to 4 stage water purification unit built into a stainless steel frame. The purification unit filters and purifies the water and supplies it to the property on demand. The filtration unit is manufactured with stainless components to prevent corrosion. All non stainless components are treated with a special rust protection to protect it against corrosion.

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