Title:
COMPOSITION FOR TREATING WASTE WATER CONTAINING HEAVY METALS
Document Type and Number:
Japanese Patent JP2546973
Kind Code:
B2
Abstract:
PURPOSE: To obtain a compositions to treat waste water containing heavy metals by mixing each specific amount of natrolite, montmorillonite, calcium hydroxide, aluminum sulphate and catalyst.
CONSTITUTION: A composition containing 30-40 wt.% natrolite [Na2Al2Si3O10.2H2 O], 20-30 wt.% montmorillonite [component; SiO2, Al2O3, Na2O or the liked, 20-30 wt.% calcium hydroxide [Ca(OH)2], 1.5-3.5 wt.% aluminum sulphate [Al2(SO4)3.7H2O] and 10.0-15.0 wt.% catalyst [MgO] is added to a waste water containing various heavy metals, particularly Cu, Ni, Zn, Fe, Pb, Cr6+ and cyan compound. Then heavy metal atoms or their ions in the solution are absorbed by micro pores in the natrolite. The natrolite also substitutes other cation in order to supplement shortage of anions. The composition is effective in treating waste water and in deodorizing function and decreasing chemical oxygen demand(COD) remarkably.
Inventors:
I JON CHAN
Application Number:
JP33543493A
Publication Date:
October 23, 1996
Filing Date:
December 28, 1993
Export Citation:
Assignee:
I JON CHAN
International Classes:
B01D21/01; B01J20/02; B01J20/04; C02F1/28; C02F1/52; C02F1/58; C02F1/62; C02F1/64; C02F9/00; (IPC1-7): B01J20/02; B01D21/01; C02F1/28; C02F1/52; C02F1/58; C02F1/62; C02F1/64
Domestic Patent References:
| JP5190992A | ||||
| JP5252093A | ||||
| JP53114791A |
Attorney, Agent or Firm:
Takehiko Suzue