The following article will guide you about the various ways for monitoring wastewater. Way # 1. Biological Oxygen Demand (BOD): 'BOD measures the requirement of oxygen by micro-organisms when a sample of water is treated at a temperature of 20°C for an elapsed period of five days'. If we have to determine the biochemical oxygen demand in given water sample [...]
Types of Biological Wastewater Treatment Methods! Due to rapid change in industrialisation, huge volume of liquid effluent is generating which is a matter of concern. Liquid effluent treatment methods were developed in response to the concern for public health and the adverse conditions caused by the discharge of liquid effluents to the environment. To accelerate the forces of nature under [...]
In this article we will discuss about the physical, chemical and biological characteristics of wastewater. Physical Characteristics of Wastewater: Following are important physical characteristics of wastewater: (i) Colour (ii) Odour (iii) Temperature (iv) Turbidity (v) Solid contents (Total solids). (i) Colour: Fresh domestic sewage is grey, somewhat resembling a weak solution of soap. With the passage of time, as putrefaction [...]