Method for removing chlorohydrocarbons in water through chemical oxidation

• Main Authors: WU XIAOLIANG, FAN JI, HE LONG, SHEN LONGHAI, HUANG SHUANG, QIU ZHAOFU, YANG FAN, ZANG XUEKE, CHEN NUO, LAN TAO, GU XIAOGANG, LU ZHICHANG, LIN KUANGFEI, LI WENZHEN, LV SHUGUANG, SUI QIAN, LI LIN, CHEN JIAO
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2013
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a method for removing chlorohydrocarbons in water through chemical oxidation, and belongs to the technical field of environmental treatment. Several chlorohydrocarbon pollutants existing in underground water are removed through the oxidation effect of sodium percarbonate (Na2CO3.1.5H2O2, SPC). The method is characterized in that the chlorohydrocarbons are treated in the presence of the SPC in the treatment process; and Fe<2+> is simultaneously added to activate the SPC which is an oxidant in order to accelerate the chemical oxidation process. The method has the advantages of simplicity, easy implementation and substantial effect; sodium percarbonate which is used as a green oxidant has an extremely-strong oxidation capability; the removal efficiencies of the chlorohydrocarbons are high, and the trichloro ethylene removal rate reaches 99.9%; and the chlorine removal speed of the method is fast, trichloro ethylene can be completely removed within 5min, and the method also has the advant