Method for repairing hexavalent chromium-containing wastewater through water planting cyperus alternifoliu

• Main Authors: GAO XIAOYIN, LI RUI, ZHAO MINHUI, SHAO BOCHANG, FU MEICHUN, YANG LIJUN, NING PING, CHEN ZHENGHUA, SHAO MINGGUO, QU CHANGBO, LI TAO
• Format: Patent
• Language: Chinese; English
• Published: 03.04.2013
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HORTICULTURE; HUMAN NECESSITIES; HUNTING; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WATERING

The invention discloses a method for repairing hexavalent chromium-containing wastewater through water planting cyperus alternifoliu. The hexavalent chromium-containing wastewater is repaired through a water planting technology by utilizing sedge family cyperus alternifoliu, the cyperus alternifoliu can normally grow and does not have a toxic phenomenon in the chromium-containing wastewater of which the concentration of hexavalent chromium does not exceed 50mg/L, the biomass is obviously increased, and after the cyperus alternifoliu is cultured for six weeks in the hexavalent chromium-containing wastewater with the concentration of 25mg/L, the concentration of hexavalent chromium in the wastewater is obviously reduced, the national farm irrigation standard of 0.1mg/L and below can be achieved, the enrichment quantity of the hexavalent chromium at the root of the cyperus alternifoliu is over 1,500mg/kg and is 5 times that of the stem and 40 times that of the leaves, and after the hexavalent chromium is enriche