Conclusions
Okra showed better flocculation properties compared to mallow, for both synthetic wastewater and effluent. In the case of synthetic wastewater, okra was as efficient as mallow in removing turbidity, at a much lower dose. This was also the case for the effluent. The use of such natural polymers as flocculants for turbidity removal might be preferred because of their non-toxic nature and low capital cost as well as lower operating costs compared to other technologies. A sitespecific preliminary bench test and then an appropriate pilot study to ensure long-term performance reliability and to establish realistic scale-up costs are recommended to evaluate the full potential of mallow and okra mucilage as flocculants.