Standard treatment method for high sulfur containing waste alkali liquor in petroleum and coal chemical industry

• Main Authors: FENG XUEBIN, TIAN WEI, LEI WENXUE, LI FENGTAO
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to a standard treatment method for high sulfur containing waste alkali liquor in the petroleum and coal chemical industry and belongs to the technical field of sewage treatment.The standard treatment method comprises the steps: firstly, sending waste alkali liquor into an oil separation adjusting tank to remove oil and suspended matters, mixing the waste alkali liquor with aliquid-state desulfurization catalyst, sending into a desulfurization tower, fixing a solid-state desulfurization catalyst in the desulfurization tower, staying the waste alkali liquor in the desulfurization tower for 20 to 25 h, then sending into a pH adjusting tank to adjust a pH to 6 to 10, then sending into an oil separator to remove impurities of emulsified oil, sending into a water distribution adjusting tank, diluting reaction liquid to 10 to 15 times, controlling sewage COD to be below 2000 mg/L, adding N and P compound and an osmotic pressure regulator, then sending into a primary aerating biochemical tank, s