Jun 13, 2017
High salt wastewater refers to wastewater containing at least 1% salt, which is mainly generated from the collection and processing of natural gas and petroleum. There are various substances in wastew...
Jun 11, 2017
According to statistics, China produces over 100 million tons of waste acid annually, of which about 40 million tons of waste acid of various concentrations...
Jun 10, 2017
PMIDA is the main raw material for producing broad-spectrum post emergence herbicides, and is also an important intermediate in the pesticide, pharmaceutical, rubber, electroplating, and dye industrie...
Jun 09, 2017
In order to serve the goals and tasks of the city's water, gas, soil pollution prevention and control, as well as the Yangtze River protection and restoration campaign during the 14th Five Year...
Jun 08, 2017
In the Earth's crust, fluorine content is 544ppm, ranking 13th in abundance. Fluorine mainly exists in the form of compounds such as fluorite (CaF2), calcium fluorophosphate (Ca10F2(PO4)6), and...
Jun 07, 2017
In 1817, Alphonsen discovered a new metal while analyzing lithium feldspar near Stockholm, and subsequently named the metal Lithium after his teacher, Swedish chemist Berzelius, with the element symbo...
Jun 06, 2017
Fluoride is one of the trace elements required by the human body to maintain normal physiological activities.
Jun 05, 2017
PrefaceWith the rapid development of the economy, the continuous improvement of residents' living standards, and the strengthening of industrialization, the pollution of the environment caused by ...