Technological Development of Comprehensive Utilization of Waste Salt

1、 Company Overview: Tiangushi Engineering Technology Group Co., Ltd. was founded in 1998 and is an innovative enterprise specializing in engineering construction services in the fields of pharmaceuticals, metallurgy, environmental protection, etc. The company has a Metallurgical Business Unit, Environmental Protection Business Unit, Biopharmaceutical Business Unit, and Automatic Control Business Unit. We have four subsidiaries: Tiangushi Automation, Tiangushi Biotechnology, Tiangushi Clean Technology, and Tiangushi Metallurgy, and have also established a Shanghai branch. In 2019, it achieved a sales revenue of 755 million yuan and a total of 544 employees. The company relies on its technological and talent advantages to create a continuous industrial chain that integrates "process technology development - project design - procurement - construction management - trial production services - operation training", and gradually forms a unique T-EPC engineering general contracting model led by technology and throughout the entire process. The company's business covers six major sectors, including environmental protection equipment and engineering technology, engineering design, automation, engineering construction, purification engineering, debugging and maintenance. It has 20 qualifications such as design, construction general contracting, and professional contracting in the chemical, petrochemical, and pharmaceutical industries, as well as in the construction industry (construction engineering). We have independently developed patented products such as ozone catalytic oxidation equipment, exhaust gas molecular sieve rotary adsorption equipment, continuous consumption equipment, and industrial energy-saving automatic control systems. Our products and technical services are widely distributed in domestic, Vietnam, South Korea, and other markets. The company has established multiple provincial-level scientific research platforms, including the Engineering Environment Research Institute of Hebei Industrial Technology Research Institute, Hebei Provincial Technology Innovation Center, Hebei Provincial Enterprise Technology Center, and Hebei Provincial Talent Introduction Demonstration Base. It has successively won honors such as the China Construction Engineering Luban Award, China Installation Star, Science and Technology Progress Award, and Asian Famous Brand Award. It is an excellent national high-tech enterprise and a demonstration enterprise for China's industry university research cooperation and innovation. 2、 The research direction of technical requirements for the proposed project is industrial waste treatment and resource utilization, with core technologies for acid and alkali recovery. Background: Industrial hazardous waste disposal is a very challenging problem, and waste salt is a particularly typical one. Industrial waste salt mainly comes from multiple industries such as pesticides, pharmaceuticals, fine chemicals, printing and dyeing. According to statistical data from Jiangsu Provincial Institute of Environmental Science, mixed salt accounts for 80% of the existing waste salt. The cost of salt recycling and utilization is high, and the separation of mixed salt is difficult. The remaining 20% of the single salt contains many impurities and toxic and harmful substances, making it difficult to treat. The expected goal is to adopt the method of recovering corresponding acid and alkali for waste brine and wastewater containing excessive acid and alkali, reduce the formation of salt by neutralization, and use the bipolar membrane method to recover corresponding acid and alkali for the formed salt. We now have the necessary conditions (equipment/personnel/funds). Our company has a Chen Ping laboratory, which can provide research and development sites and basic research and development facilities. We also have a high-level technical research and development team, with sufficient research and development funds.