유역 통합 물관리 기술 솔루션 청호환경개발(주)

Used as the main ingredient of loess natural organic matter
Maximize waste recycling and water purification functions
Adsorption/oxidation reactions of organic substances, nutrient salts, heavy metal substances, etc
Nitrogen oxidation and denitrification reactions by large and small voids inside
Adsorption and removal of ionic substances such as anions and cations

	Rainwater Holding Stone(S)	Rainwater Holding Stone(M)	Rainwater Holding Stone(L)
Size	3~5㎜	5~8㎜	13~5㎜
Main raw material	Red clay, Clay	Red clay, Clay	Red clay, Clay
The external appearance	Bead shape, ocher color, and mud brown, smooth surface and micropore formation	Beaded, ocher-colored, smooth surface and microporous formation	Rectangular, reddish brown, coarse and fine pore formation
Performance Weight	0.9~1.4g/㎤	0.9~1.4g/㎤	0.9~1.4g/㎤
Volume weight	0.72~0.85g/㎤	0.75~0.95g/㎤	0.75~0.95g/㎤
Porosity	62	61	61
Comparative area	1.0~3×10⁴㎠/g	1.5~3×10⁴㎠/g	1.8~5×10⁴㎠/g

Sulfur and clay, which are the main raw materials of rainwater, are rich in cationic substances and have excellent phosphorus adsorption ability contained in non-point pollutants.
The micro pores formed inside provide a space for microorganisms to inhabit and increase the reproduction density of useful microorganisms or specific microorganisms that contribute to the removal of pollutants.
Macropores (external pores) formed between uniform particles allow rainwater to pass through and play a role in increasing the permeability.
When used as a mulching stone, the aesthetic function of the natural color of red clay is provided, as well as the loss of vegetative soil due to rainwater.
It is possible to remove eutrophication-inducing substances (phosphorus, nitrogen) as well as oil pollutants by selectively integrating and applying specific microorganisms depending on the source of contamination.

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