Abstract: Embodiments of this application disclose a model training method performed by a computer device. The method includes: respectively performing, through m reference object key point detection models, object key point detection processing on a target training image to obtain key point detection results of predicted positions of key points respectively corresponding to a plurality of object key parts in a target training image; for each object key part whose associated predicted position of a key point corresponding to the object key part in the m key point detection results indicates that the object key part is a target object key part, determining a labeling position corresponding to the target object key part as a corresponding key point labeling result; and training a target object key point detection model using the target training image and the key point labeling results corresponding thereto.

Abstract: Embodiments herein relate to methods for sludge reduction for pretreatment of nitrotoluene wastewater using electro-catalytic redox. The embodiments may include (a) adjusting a pH of the nitrotoluene wastewater to 1.5 to 2.0, standing for precipitation, draining sludge of the nitrotoluene wastewater at the bottom, obtaining supernatant of nitrotoluene wastewater, placing the supernatant through a cathode inlet into a cathode chamber of an electrochemical reactor; (b) performing electrochemical treatment, wherein reduction reaction of the supernatant of the nitrotoluene wastewater takes place at the cathode chamber, the nitrotoluene wastewater is placed into the anode chamber for oxidation reaction through the cathode outlet, the catholyte tank, and the anode inlet in sequence; (c) adjusting the nitrotoluene wastewater treated in step (b) via the anolyte tank, and then discharging the nitrotoluene wastewater into a biochemical system.

Abstract: Provided is a method for resourceful utilization of desorption liquid generated in the resin ion exchange process. This method effectively separates highly-concentrated organics and salts from the desorption liquid and puts these two components into comprehensive utilization.

Abstract: Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

Abstract: Embodiments herein relate to methods for sludge reduction for pretreatment of nitrotoluene wastewater using electro-catalytic redox. The embodiments may include (a) adjusting a pH of the nitrotoluene wastewater to 1.5 to 2.0, standing for precipitation, draining sludge of the nitrotoluene wastewater at the bottom, obtaining supernatant of nitrotoluene wastewater, placing the supernatant through a cathode inlet into a cathode chamber of an electrochemical reactor; (b) performing electrochemical treatment, wherein reduction reaction of the supernatant of the nitrotoluene wastewater takes place at the cathode chamber, the nitrotoluene wastewater is placed into the anode chamber for oxidation reaction through the cathode outlet, the catholyte tank, and the anode inlet in sequence; (c) adjusting the nitrotoluene wastewater treated in step (b) via the anolyte tank, and then discharging the nitrotoluene wastewater into a biochemical system.

Abstract: Implementations herein relate to methods for reducing a desorption solution for regeneration of ion exchange resins in the field of regeneration of resins. The implementations solve problems related to low utilization rates of regeneration agents and high volumes of desorption solutions during the desorption process. The implementations include regenerating the ion exchange resins, and the regeneration solution becomes the desorption solution. After coagulating sedimentation of the desorption solution and slurry separation, a large amount of organic contents are removed from coagulation serum and a large amount of regenerate agents are left. The implementations further include adding the regeneration agent to the coagulation serum to form new or refreshed regeneration solution to regenerate the ion exchange resins. Accordingly, the coagulation serum may be generated from the desorption solution. These operations may be repeated multiple batches for resin regeneration.

Abstract: Provided is a method for resourceful utilization of desorption liquid generated in the resin ion exchange process. This method effectively separates highly-concentrated organics and salts from the desorption liquid and puts these two components into comprehensive utilization.