Affiliations: PLA Polytechnic University, Nanjing 211101, China.
E-mail:Jumpy@990.net | Nanjing Institute of Geography and Limnology,CAS,
Nanjing 210008, China | Hongsheng Chemical Factory, Xishan 214115, China
Abstract: A new technology for harnessing the dye polluted water and dye
collection was developed. It is based on the enhanced evaporation by using
solar, wind, and air temperature energy and additional heat-electric energy. It
consists of four parts: (1) evaporation carrier system (evaporation carrier and
frame for evaporation carrier) for polluted water; (2) polluted water
circulating system (pumping-spraying-collecting); (3) heating system; (4)
workshop with polluted water reservoir-tanks and rainfall prevention roof. The
polluted water was (heated in case necessary) sprayed to the evaporation
carrier system and the water was evaporated when it moved in the space and
downward along the carrier mainly by using natural (solar, wind, and air
temperature energy). In case, when there is no roof for the carrier system,
thepolluted water can be stored in the reservoirs (storage volume for about 20
days). The first 10-25 mm rainfall also need to be stored in the reservoirs to
meet the state standard for discharging wastewater. The dye may be collected at
the surface in the reservoir-tanks and the crystallized salt may be collected
at the bottom plate. The black-color wastewater released by the factory is no
more discharged to the surface water system of Taihu Lake Basin. About 2 kg dye
and 200 kg industrial salt may be collected from each tone of the polluted
water. The non-pollution production of dye may be realized by using this
technology with environmental, economical and social benefits.
Keywords: dye polluted water harnessing, dye collection technology