This master thesis presents a study on the requisite cooling of an activated sludgeprocess in paper and pulp industry. The energy consumption of paper and pulpindustry and it’s wastewater treatment plant in particular is relatively high. It istherefore useful to understand the wastewater treatment process of such industries.The activated sludge process is a biological mechanism which degrades carbonaceouscompounds that are present in waste. The modified activated sludge modelconstructed here aims to imitate the bio-kinetics of an activated sludge process.However, due to the complicated non-linear behavior of the biological process, modellingthis system is laborious and intriguing. We attempt to find a system solutionfirst using steady-state modelling of Activated Sludge Model number 1 (ASM1), approachedby Euler’s method and an ordinary differential equation solver. Furthermore,an enthalpy study of paper and pulp industry’s vital pollutants was carriedout and applied to revise the temperature shift over a period of time to formulatethe operation of cooling water. This finding will lead to a forecast of the plantprocess execution in a cost-effective manner and management of effluent efficiency.The final stage of the thesis was achieved by optimizing the steady state of ASM1.
展开▼
