Water recycling is a key to the sustainable future. It indirectly conserves drinking water used for non-critical applications.
Recycled water is effectively used for non-potable purposes, most commonly for agriculture, landscape, parks, industrial cooling and process water, toilet flushing, dust suppression, construction activities, concrete mixing and recharging of artificial lakes.
Wastewater recycling pays as it addresses two problems simultaneously:
ONE: Treatment for compliance and arresting the environmental pollution; and
TWO: utilization of same after purification for a lot many gainful applications saving freshwater costs.
Typical tests for recycled wastewater are those required for statutory compliance with a few additional ones to ensure enhanced quality for recycling purpose.
Biochemical oxygen demand (BOD)
Chemical oxygen demand (COD)
Total dissolved solids
Total kjeldahl nitrogen (TKN)
Total oil & grease
Total residual chlorine
Total suspended solids