Abstract
The discharge of wastewater effluents untreated or equally treatment without periodic quality monitoring, can lead to catastrophic water pollution in the long term affecting the aquatic life, agriculture farming and soil conditions of the entire downstream ecosystem. In this paper, we present a 6LoWPAN-enabled approach to designing a real-time water treatment monitoring and control system connecting to the internet. Our prototype implementation also uses emerging HTTP-compatible CoAP based monitoring and control approach for seamless web integration supporting internet based data collection suitable for various stakeholders such as government pollution control authorities, industries and domain scientists. The feedback control system responsible for neutralization when the desired water quality is beyond a permissible range, for example, adjusting the pH levels by adding acid or base solution, has also been implemented using the CoAP protocol. The system was designed using Contiki OS cooja simulation environment followed by the hardware implementation using TelosB motes running 6LoWPAN/CoAP stack interfaced to temperature, pH, ORP and conductivity sensors.
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