The waste rock produced by mining in Copper mine has high sulfur content, which leads to the risk of acidic water pollution to the downstream groundwater and soil environment. Based on the pollution prevention and control ideas of source control and process control, the groundwater barrier project of vertical and horizontal seepage prevention is implemented for acid reservoirs. Through the comparison of groundwater monitoring data from upstream and downstream of the vertical barrier, it is found that the acid pollution of the water in the downstream of the barrier is significantly improved compared with upstream of the barrier, and the concentration of heavy metals and other characteristic pollutants is significantly reduced.
At present, in the widely used printed circuit boards, the content of metal Cu is generally between 20 and 30%. Waste circuit board smelting enterprises recover Cu and other metal elements from waste circuit boards, and the fire smelting process produces waste gas, wastewater and solid waste. In this paper, we select a typical waste circuit board smelting enterprise, analyze the emission characteristics of pollutants in the smelting process, and calculate the emission coefficient of main air pollutants. The main existing forms of heavy metals were measured, and the material flow of heavy metal pollutants in molten pool melting fire process was analyzed. Cu, Pb and Sn were identified as heavy metal pollutants, and the proportion of different occurrence objects was compared.
Heavy non-ferrous smelting industry is one of the main fields of carbon emission reduction and carbon peak. It is urgent and important to find out the greenhouse gas (GHG) emission of heavy non-ferrous smelting industry and conduct GHG accounting in heavy non-ferrous smelting industry. However, the method of GHG emission accounting in non-ferrous smelting industry has not been updated for many years, which brings great difficulties to the further development of GHG accounting work in non-ferrous industry under the new form of "double carbon". In this paper, a typical lead smelting enterprise is taken as an example to study the carbon dioxide (CO2) emission accounting, and the existing problems of GHG accounting in heavy non-ferrous smelting enterprises are discussed, and suggestions for further optimization are put forward.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.