Over the years, Shandong Dongjia Group has conscientiously implemented the environmental protection laws and regulations of the state and governments at all levels. While developing production, we should take environmental protection as an important way for enterprises to develop and improve economic benefits, adhere to the development of circular economy and take the road of comprehensive utilization of resources. The company introduced the continuous acidolysis process from Japan, which not only improved the acidolysis efficiency, but also greatly reduced the emission of acid mist. In view of the waste acid produced in the company's production process, in order to reduce its treatment cost, reduce pollutant discharge and take the road of clean production, the company has installed two sets of concentrated production devices for waste acid, and returned the concentrated acid to replace the finished sulfuric acid; The project of producing ammonium sulfate from waste acid has also started. This project is to neutralize the waste acid produced in titanium dioxide production with ammonia water, and then produce high-quality ammonium sulfate through compression, purification, concentration, separation and drying, which is the first case in titanium dioxide industry in China and has applied for national patent.
Through the continuous efforts of Shandong Dongjia Group, the quality of waste gas and wastewater discharged by the company is better than the national emission standard. The company has successively won the honorary titles of "National Advanced Chemical and Environmental Protection Unit", "Advanced Environmental Protection Unit", "Advanced Resource Conservation Unit" and "Environmental Friendly Enterprise". The company's existing "three wastes" discharge situation will be one of the important basis for the national titanium dioxide industry to formulate standards.