Technical
Technology
Technical capacity
Jiangsu Yijian Environmental Protection Technology Co., Ltd. cooperated with the Institute of Physics and Chemistry Technology of the Chinese Academy of Sciences to establish a key experimental center for thermal process energy-saving technology, and constructed a complete pollutant analysis, testing, experiment, and simulation treatment system for the systematic treatment of industrial wastewater characteristic pollutants. Provide technical support for design.
Jiangsu Yijian Environmental Protection actively participated in the national science and technology major project "Industrialization of Energy-saving Evaporation Equipment for High Concentration and High Salt Organic Waste Liquid" 2014ZX07214003 (Water Project), Jiangsu Natural Science Foundation "Mechanism Research and Experimental Verification of Wet Compression Process of Single Screw Steam Compressor" BK 20140274 and other scientific research projects. The company digests and absorbs the advanced scientific research results of the Institute of Physics and Chemistry of the Chinese Academy of Sciences based on heat pump and energy-saving research, and has industrialized high-efficiency and energy-saving technologies in the field of wastewater treatment, including mechanical vapor recompression (MVR), low-energy multi-effect evaporation, heat pump distillation, heat pump drying, low-temperature evaporation, etc. Among them, Shandong Binnong Technology Co., Ltd. pesticide wastewater MVR evaporation treatment project for water special demonstration project.
Technology
5 original technical advantages
01
Systematic Design of Industrial Wastewater Treatment
· According to the amount of wastewater, water quality, discharge standards, treatment requirements to systematically design the process
The typical zero-discharge treatment process of high-concentration and high-salt organic wastewater is pretreatment + salt concentration + evaporation crystallization + refined salt + biochemical treatment + membrane advanced treatment.
· Typical case: Huaneng Jinggangshan Power Plant Desulfurization Wastewater Project
02
Pretreatment Technology of High Salt and High Concentration Organic Wastewater
For the low boiling point and high boiling point organic matter in the comprehensive organic wastewater, the corresponding pretreatment process is adopted to reduce the concentration of organic matter in the raw water, improve the evaporation concentration multiple, and reduce the discharge of mother liquor.
Typical process: resin adsorption, fine filling recovery, enhanced coagulation advanced oxidation, etc.
· Typical case: Inner Mongolia Kailidi sodium thiosulfate and o-phenylenediamine production wastewater treatment project
03
Energy Saving Design of Evaporation System
The heat exchange tube is enhanced by special surface treatment to enhance the heat exchange effect and slow down the scaling rate;
· The extraction of non-condensable gas improves the heat exchange efficiency and optimizes the arrangement of the extraction point.
· High-efficiency hydrocyclone device improves the quality of secondary steam
· Overall heat utilization increased by 10-20%
Typical cases: all projects have applications
04
salt separation technology by evaporation crystallization
-Evaporative crystallization of mixed salts as hazardous waste disposal costs are high, using the solubility of different salts and crystalline particle differences to achieve salt separation, sodium thiosulfate and sodium sulfate separation, sodium nitrate and sodium sulfate separation.
Typical cases: separation of sodium nitrate and sodium sulfate in Ningxia Huayu Project, separation of sodium sulfate and sodium thiosulfate in Hongxing Science and Technology Project in Alxa Left Banner
05
Reduction and Stabilization Technology of Evaporation Mother Liquor
The evaporation system needs to discharge high-concentration mother liquor regularly, and its discharge amount is 1/20-1/5 of the treated water amount. Pre-processes such as comprehensive pretreatment of raw water, dosing of chemicals and secondary crystallization can be used to improve the concentration ratio of wastewater and realize the reduction of evaporation mother liquor.
The use of single screw compression evaporation (high temperature rise), non-clogging drying kettle, hollow blade drying, heat pump drying and other advanced treatment processes, the high concentration mother liquor into low water salt mud, reduce the amount of hazardous waste generation, to achieve the stabilization of the evaporation mother liquor.
Typical Case: Ningxia Zhongwei City Xin Sanyuan Chemical Nitrochlorobenzene Wastewater Treatment Project
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