Entries by LCDRI

15 types of industrial wastewater treatment processes

Industrial wastewater refers to the wastewater, sewage and waste liquid produced in the industrial production process, which contains industrial production materials, intermediate products and products that are lost with the water and pollutants generated during the production process. It summarizes the chemical industrial wastewater and the printing and dyeing industrial wastewater. 15, paper industry wastewater, […]

Method for utilizing various sludge building materials

1. Light ceramsite made of sludge A ceramsite company in Kunming introduced advanced domestic technology and used Dianchi sludge as a raw material to develop high-quality artificial light aggregates–ceramsite and ceramsite hollow brick. Among them, the proportion of sludge in raw materials is as high as 30% to 40%. This kind of ceramsite hollow brick […]

Burning cement for sludge building materials

In addition to organic matter, sludge usually contains 20% to 30% of inorganic matter, mainly calcium, silicon, iron, and aluminum. The construction of sludge is an effective method to make full use of inorganic matter in sludge. In 1997, a company produced high-strength cement using sewage sludge and waste incineration fly ash as the main […]

Sludge treatment definition, characteristics and main methods

1. Overview of sludge treatment and disposal In the treatment of feed water and wastewater, various types of sediments and floating materials produced by different sludge treatment processes are collectively referred to as sludge. The composition and properties of the sludge mainly depend on the composition, properties and treatment process of the treated water. The […]

Utilization technology of metallurgical solid waste

Metallurgical dust The main components of metallurgical dust are gas dust, gas mud, steel-making dust and so on. Blast furnace dust The blast furnace dust mainly refers to the metal vapor captured by the dust collector in the metallurgical operation, such as the raw material dust generated along with the blast furnace gas movement, the […]

Development trend of heavy metal detection in soil

In recent years, soil heavy metal detection technology has been developed rapidly, but there is still a big gap with the actual demand, and there is a huge room for improvement in some key technologies. The spectral method can be used to analyze and determine the heavy metal content in various complex environmental samples with […]

Sludge brick building materials

In addition to organic matter, sludge usually contains 20% to 30% of inorganic substances, mainly calcium, silicon, iron and aluminum. Sludge building materials are an effective method for making full use of inorganic substances in sludge. The research team incorporated 10% to 30% of the sewage sludge into clay bricks and burned it into an […]

Tradition method of disposal municipal sewage sludge

At present, the main disposal methods commonly used for sludge are sanitary landfill, incineration treatment, direct land use, etc. These disposal methods have played a certain role in practical applications, but as environmental standards become more stringent, their problems Exposed. 1. Sanitary landfill The sanitary landfill of sludge began in the 1960s and has developed […]

Status of urban sewage sludge

Municipal sewage sludge is solid, semi-solid and liquid waste generated in the sewage treatment process. The sludge composition is complex, including solid particles such as fibers, sediments and animal and plant residues mixed into domestic sewage or industrial wastewater. A solid substance of coagulated flocs, various colloids, organic matter, and adsorbed metal elements, germs, microorganisms, […]

Sludge carbonization treatment technology

The resource utilization after the sludge has been paid more and more attention as people pay more attention to sustainable economic development. In recent years, with the development of China’s economy and the continuous advancement of urbanization, urban sludge production has gradually increased. The traditional methods are sludge landfill, sludge farming and sludge incineration. After […]