Environmental impact assessment and enlightenment of surface treatment production line during operation

Abstract

Industrial production creates material conditions for mankind, but also seriously pollutes the environment. In order to avoid pollution damage to the atmosphere, water, sound, and other environments, environmental impact assessments must be carried out before the project starts, and possible environmental pollution factors must be analyzed and predicted in advance. Company A, a manufacturer of mechanical parts, plans to build a new surface treatment production line, including two production links: anodizing and painting. The product coefficient method and the material balance method were used to evaluate and analyze the environmental pollution factors such as waste gas, wastewater, noise, solid waste, and discarded bath solution discharged during the operation period of the production line. The evaluation results show that after chromium mist recovery, spraying, filtration, and activated carbon adsorption and other measures are concentrated treatment, the concentration of various exhaust gas discharged in an organized manner is lower than the standard limit; various wastewater can be recycled after being filtered by ion exchange resin and activated carbon use, a very small amount of concentrated liquid needs to be handled by an external professional unit, and a cofferdam is installed under the production line and the ground is strengthened to prevent leakage, which will not pollute the groundwater environment; the noise level on the four plant boundaries during the operation of the production line meets the noise standard. No noise pollution will be generated; solid waste and discarded bath solutions are centrally stored by the enterprise and entrusted to an external professional unit for processing, and no other pollution will be generated.