Optimization of wastewater stabilization ponds in Honduras

[摘要] (cont.) Analytical calculations of ideal pond performance are compared to computer numerical flow modeling results, computed using the INTROGLLVHT modeling software. This comparison examines the sensitivity of pond performance to a number of variable factors including sludge accumulation and distribution, pond outlet geometry, and inlet flow symmetry. The largest effect and greatest sensitivity was found for unbalanced, asymmetric flows, yielding greatly reduced pond efficiency. Sludge accumulation had a significant effect on final effluent quality due to reduced pond volume and residence time. However, the distribution of a given volume of sludge and the spacing of pond outlets both had minimal effect on effluent quality. Recommendations for pond maintenance developed from this analysis include a careful balance of pond flow and strict adherence to a scheduled desludging routine.

[发布机构] Massachusetts Institute of Technology