Treatment method of organic wastewater from CTP synthetic process

• Main Authors: SONG KUIJING, ZHANG YINGBIN, YAO HONGMEI, ZHANG XINHAO
• Format: Patent
• Language: Chinese; English
• Published: 12.07.2019
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention provides a treatment method of organic wastewater from the CTP synthetic process, comprising the following steps: A) mixing organic wastewater generated from the CTP synthetic process and an acid solution until the pH value of the acidizing fluid obtained after the mixing is 3-5; B) letting the acidizing fluid fully react at 60-90 DEG C, cooling, and carrying out solid-liquid separation to obtain a pretreated fluid; C) adjusting the pH value of the pretreated liquid to 8-9, and carrying out evaporation and concentration, centrifugal separation and biochemical treatment to obtainpurified water. By the treatment method of the invention, organic matter in the organic wastewater is efficiently removed before the wastewater enters the evaporation and concentration stage. Thereby,efficiency of evaporation and concentration is effectively enhanced, effective operation of MVR is guaranteed, energy consumption is reduced, the COD value of the purified water is low, and purity ofthe separated inorganic sa