Two identical pilot-scale reactors – one as an oxidation pond (OP) and the other as a freewater-surface-flow constructed wetland (CW) planted with Cyperus papyrus – were fed with a lowstrength domestic wastewater at the organic loading rate of 16 kg BOD/ha-d. The purpose of this study was to investigate how the solar energy dissipated into the biomass productivities during the wastewater treatm...

Bream pond aquaculture plays a very important role in China's aquaculture industry and is the main source of aquatic products. To regulate and control pond water quality and sediment, a movable solar pond aquaculture water quality regulation machine (SMWM) was designed and used. This machine is solar-powered and moves on water, and its primary components are a solar power supply device, a sedim...

We are interested in modelling and control of a salt gradient solar pond (SGSP) in the south of Tunisia. We developed a model of a Closed Cycle Salt Gradient Solar Pond (CCSGSP) that ensure successful year round operation of the pond. This model was used to study the response of solar pond (SP) to various control technique. It takes into account heat and salt diffusion in the pond and simulates...

a small salt gradient solar pond with an average surface area of 1.8 m2 and depth of 0.8m has been tested. the depths of storage, gradient and surface zones are 0.3, 0.27 and 0.07m, respectively. the temperature of the storage zone for the summer days reaches its maximum of 65˚ c after about 8 days. daily variation of the storage zone temperature was about 8˚c which is due to small volume of th...

A small salt gradient solar pond with an average surface area of 1.8 m2 and depth of 0.8m has been tested. The depths of storage, gradient and surface zones are 0.3, 0.27 and 0.07m, respectively. The temperature of the storage zone for the summer days reaches its maximum of 65˚ C after about 8 days. Daily variation of the storage zone temperature was about 8˚C which is due to small volume of th...

In this work, TiO 2 photocatalysis was used to disinfect domestic wastewaters previously treated by different biological treatment systems: Upward-flow Anaerobic Sludge Blanket (UASB), facultative pond, and duckweed pond. The microorganisms monitored were E. coli, total coliforms, Shigella species, and Salmonella species. Photocatalytic experiments were carried out using two light sources: a so...

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