Method for preparing regeneration circular used acid wastewater treating agent

• Main Authors: ZHAO YUN, LIU RUI, JIAO QINGZE
• Format: Patent
• Language: Chinese; English
• Published: 17.06.2009
• Subjects: CHEMISTRY; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; INORGANIC CHEMISTRY; METALLURGY

The invention discloses a method for preparing regenerated and recycled industrial acid wastewater treatment agent, which comprises: A, preparation of a salt solution, wherein a soluble magnesium salt for preparing the salt solution is magnesium chloride, magnesium sulfate or magnesium nitrate, and a soluble aluminum salt for preparing the salt solution is aluminum chloride, aluminum sulfate or aluminum nitrate; B, preparation of an alkali solution, namely sodium hydroxide, sodium carbonate, ammonia water, ammonium carbonate, potassium hydroxide, potassium carbonate, calcium hydroxide or a mixture thereof is dissolved into water; C, coprecipitation reaction, namely the salt solution and the alkali solution are mixed under the stirring condition, and crystallized for a period of time at a certain temperature to generate white deposit; D, separation, washing and drying; and E, roasting to obtain magnesium aluminum composite metal oxide. The acid wastewater treatment agent has simple preparation technology and g