Petrochemical industry is the basic industry and pillar industry of the national economy.Scale has a direct impact on all aspects of the social economy. The chemical industry has categoriesMany, complex processes, diverse products, many types of pollutants emitted during production,The characteristics of large quantity and high toxicity.

The chemical industry occupies an important position in the national economy of various countries, and it is theBasic industries and pillar industries. The development speed and scale of the chemical industry have an impact on the socio- economicAll sectors of the economy have a direct impact, and the world’s annual output value of chemical products has exceeded 15$100 billion.

The power station industry converts various primary energy sources in nature into electric energy (secondary Energy) factory. At the end of the 19th century, as the demand for electricity increased, people began toPut forward the idea of establishing a power production center.

The pharmaceutical industry is an important part of my country's national economy. It is an industry that combines traditional industries with modern industries and integrates primary, secondary and tertiary industries. The main categories include: chemical raw materials and preparations, Chinese medicinal materials, Chinese herbal medicines, Chinese patent medicines, antibiotics, and biological products.

The metallurgical industry refers to the industrial sector that mines, selects, and sinters metal ores, smelts them, and processes them into metal materials.

Natural gas is stored in underground porous rock formations, including oil field gas, gas field gas, coal bed methane, mud volcanic gas and biogenic gas, etc., and a small amount is also derived from coal seams. It is a high-quality fuel and chemical raw material.

The purpose of the water conservancy industry is to comprehensively consider and rationally arrange the control, development and use of ground and ground water resources to maximize safety, economy and efficiency.

The construction industry refers to the material production sector in the national economy that is engaged in the survey, design, and construction of construction and installation projects and the maintenance of original buildings.

Sewage treatment : The process of purifying sewage to meet the water quality requirements for discharge into a body of water or reuse.