Integrated Evaluation of Urban Water Bodies for Pollution Abatement Based on Fuzzy Multicriteria Decision Approach.

Today's ecology is erected with miscellaneous framework. However, numerous sources deteriorate it, such as urban rivers that directly cause the environmental pollution. For chemical pollution abatement from urban water bodies, many techniques were introduced to rehabilitate the water quality of these water bodies.

Vulnerability assessment and application of bacterial technology on urban rivers for pollution eradication.

To protect against the environmental pollution, the present research was undertaken to enumerate the Bacterial Technologies (BTs) on the restoration of polluted urban rivers, that is, Fenghu-Song Yang River (FSR) and Xuxi River (XXR). Experimental research accounted for the physiochemical parameters (pH; temperature; dissolved oxygen (DO); chemical oxygen demand (COD); total phosphorus (TP); total nitrogen (TN); and ammonia nitrogen (NH3N)) before and after the BT operation. The results declared that the BT is efficient to restore the polluted rivers up to reliable condition.

Numerical modeling and practical experience of Xuxi River's natural restoration using biological treatment.

Considering the successful application of biological treatment in several restoration works in China, this study is aimed to complete the previous numerical modeling and practical observation of the stream restoration. The results obtained from the restoration of the Xuxi River, Wuxi City, China, show that the technology of bacteria offers new solution for restoring the polluted urban streams. Although a considerable increase in the concentration of nutrients may have enhanced the algae problem during the treatment, the Xuxi River is now clearer and contains aquatic life.