Adsorption coagulation method for efficiently treating wastewater containing chromium and nickel

• Main Authors: LI HONGYAN, ZOU JINCHENG, MA JINGWEI, SHI ZHOU, DENG LIN, ZANG CHONG, ZHOU MIN, NIU JIANMIN, ZHOU WEI, ZHU LIANHUA
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the technical field of wastewater treatment, and discloses an adsorption coagulation method for efficiently treating wastewater containing chromium and nickel, which comprises the following steps: preparation of NaOH modified powdered activated carbon: (1) dissolving 20 g of NaOH in 100 mL of deionized water to prepare a 5 mol/L NaOH solution; (2) putting 10g of powdered activated carbon into the solution prepared in the step (1), dipping, then magnetically stirring for 2 hours, repeatedly washing and carrying out suction filtration to obtain a solid-phase substance, and drying at 60 DEG C for 24 hours to obtain an SH-PAC material; and removing chromium and nickel through combination of powdered activated carbon adsorption and flocculation. According to the adsorption and coagulation method for efficiently treating the wastewater containing chromium and nickel, the treatment method which is economical, reliable and mature in technology is adopted, the dosage is reduced, the pH value o