Device and production technology for treating ternary-monomer wastewater and extracting sodium sulfate

• Main Authors: CHU XILING, LIU JIANQI, ZHANG ZHIGANG, GUO XUEYANG, XU JINXIN, ZHAO XIAOYUN, GUO XIANGRONG, ZHANG YUNLING, CUI GUOQIANG, LI HOUQIANG
• Format: Patent
• Language: Chinese; English
• Published: 21.08.2013
• Subjects: CHEMISTRY; COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM,RUBIDIUM, CAESIUM, OR FRANCIUM; INORGANIC CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a device and a production technology for treating ternary-monomer wastewater and extracting sodium sulfate. The device comprises a plate-and-frame filter press, a mother liquid heat exchanger, a stripping tower and a condenser which are sequentially communicated through a pipeline, wherein the condenser is communicated with a methane distillation tower through the pipeline. The production technology comprises the following steps of: (1) pumping neutralized mother liquid into the plate-and-frame filter press, preheating the mother liquid through the mother liquid heat exchanger, and then pumping the mother liquid into the stripping tower from the top of the stripping tower; (2) pumping steam into the stripping tower from the bottom of the stripping tower, after methane in the mother liquid is brought out by the steam, condensing the steam through the condenser, then entering the methane distillation tower, and separating to obtain methane; (3) pumping liquid at the bottom of a high-temp