Recycling of wastewater is done to treat the wastewater to a level suitable for various purposes. Water recycling process is used for various purposes.
Benching: A surface at the base of an inspection chamber or manhole to confine the flow of sewage to avoid the accumulation of deposits and provide a safe working surface. The surface is sloped so that any surcharge flow runs off it. Blinding: Material that will fill interstices, irregularities and excavated soft spots in the(…)
S.No. Type of characteristics Type of impurity Permissible limit Absolute maximum limit Remarks 1 Physical Turbidity 5 25 On silica scale Colour 5 50 Colour number on cobalt scale Taste and odour 1 3 Threshold odour number 2 Chemical pH value 7 – 8.5 6.5 – 9.2 Hardness 75 mg/l 110 mg/l Hardness expressed(…)
The raw treated water can be checked and analysed by studying and testing their physical, chemical and microscopical characteristics as explained below: PHYSICAL CHARACTERISTICS OF WATER (1) Turbidity The turbidity is measured by a turbidity rod or by a turbiditymeter with optical observations and is expressed as the amount of suspended matter in mg/l or(…)