The invention provides bamboo-
charcoal-shaped porous ceramsite coated by zero-valent iron as well as a preparation method and application of the bamboo-
charcoal-shaped porous ceramsite. The preparation method of the bamboo-
charcoal-shaped porous ceramsite coated by zero-valent iron comprises the following steps: taking alpha-Al2O3
powder as ceramsite primary aggregate, clay and
bentonite as auxiliary aggregates and surface-activated bamboo bits as
bamboo charcoal preparation materials to combine with a pore forming agent to prepare pores without adding a
sintering aid or a binder; adopting graded
sintering at 400-600 DEG C to obtain bamboo-charcoal-shaped porous ceramsite by once molding; then, preparing the product bamboo-charcoal-shaped porous ceramsite coated by zero-valent iron by virtue of a reducing
coating process of the
coating material, wherein the product bamboo-charcoal-shaped porous ceramsite is a deep dark small ball with a grain size of 2-10 mm, internally a porous
honeycomb spherical structure with a surface pore size of 15-25 mu m, has water absorption of 20-35% and a specific surface area of 40-60m<2> / g. The preparation method disclosed by the invention is
environmentally friendly simple and energy-saving in preparation process, various in treated pollutants, and suitable for treating non-biodegradable
wastewater such as
flue gas
wastewater, heavy
metal wastewater,
phenol-containing wastewater,
emulsified oil wastewater, note printing and printing and
dyeing wastewater, and
raw material are easily available.