Application of formate as coagulant in high-concentration organic wastewater treatment

• Main Authors: XU JIE, YUE QINYAN, XUE MOXI, SHEN XUE, GAO BAOYU
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOSITIONS BASED THEREON; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC CHEMISTRY; ORGANIC MACROMOLECULAR COMPOUNDS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to application of formate as a coagulant in high-concentration organic wastewater treatment. As the coagulant, the formate can be applied to coagulation to remove organic matters in high-concentration organic wastewater; the pH value of the high-concentration organic wastewater is 7-9; the COD (Chemical Oxygen Demand) of the high-concentration organic wastewater is 50-200mg/L; the treatment temperature is normal temperature; the formate is aluminum triformate; the Zeta potential of the formate at 20 DEG C is 22+/-2mV; the addition amount of the formate is 5-30mg/L. When the high-concentration organic wastewater is treated by using the aluminum triformate, an excellent effect can be achieved, the treatment effect is good, and the cost is low; an aluminum triformate coagulant is prepared from anhydrous formic acid and aluminum hydroxide in a synthesis manner, so that treated effluent is free of chlorine ion or sulfate ion, pipelines and facilities are not corroded, and in addition, as the