The sustainable, low-energy and low-cost alternative
More than 10 years of experience with the cultivation of algae and a lot of experience and expertise in waste water treatment are being combined in the HRAP system (also called Integrated Algae Pond Systems IAPS).
HRAP systems consist of a simple facultative pond and a sequence of algae ponds. Various configurations are possible. Domestic and industrial waste water is converted to algal biomass that can serve as fertilizer, biogas source or other applications. Effluent is directly fit for irrigation or discharge into the river.
The robust technology of a facultative pond followed by algal and settling ponds needs little technical equipment and energy, reducing investments and maintenance requirements significantly. Construction works are feasible to be executed by local contractors and algae harvesting can create permanent local employment. The effluent is ready for agricultural use and can also reach national standards for discharge on surface water. No chemical dosing is necessary for disinfection or sludge dewatering. The algal biomass can be used or sold locally as fertilizer (optimal N, P, C ratio and release) or converted to energy and contributes to community development.
DHV offers full consulting and engineering services, backed by scientific institute EBRU (Environmental Biotechnology Research Institute) of the Rhodes University in South Africa.
We can deliver complete easy-to-operate plants in any contract type preferred by our clients. Added-value services extend to effective operational support or taking full responsibility for plant operation and maintenance.