This paper describes the expansion of a silent wastewater suction cylinder pump that can handle highly viscous wastewater of varying density over time as an environmental engineering solution. This cylinder pump is a scaled-up full-fledged version of a low-noise, fully dry-running cylinder pump originally developed for indoor use. When clogging is detected or has been programed to run periodically, an anti-clog self-cleaning pulse flow is sent to clean the suction inlet. This contributes to lower maintenance costs and longer pump life. When the inlet is properly submerged, the pump operates in the same manner, but a separate check valve and piping allows the flow to operate in the reverse direction for a short time to clean the inlet filter. If additional clean water is not available, the previously pumped low-concentration liquid can be reused after an appropriate settling period. In this case it can be considered that self-cleaning pulse use wastewater debris is settled unevenly. Further assume that inlet for self-cleaning should be moved with minimum possible angle as it is placed in wastewater. Another factor is movable at minimum possible height due to high viscosity. Now with two minimizing factors this objective can be considered as minimizing problem of two-dimensional optimization. Since this is a two-dimensional optimization problem of finding minimum values of both dimensions a particle swarm optimization method of mosquito swarm optimization is considered here as the candidate and simulations were performed. Simulation results show a fast convergence proving the feasibility for further research to obtain cleaner pulse flow. Applying cleaner pulses contributes to lower maintenance costs and longer pump life.