The water quality is relatively stable, but it is turbid, deep and stinky. It is slightly alkaline, with high nitrogen and phosphorus content. It generally does not contain toxic substances. At the same time, domestic sewage is very suitable for the reproduction of various microorganisms, so it often contains a lot of fine.

Metallurgical Wastewater Treatment There are many products in the metallurgical industry, and the production processes are all in series, discharging a large amount of waste water, which is the main wastewater polluting the environment. one. The main characteristics of metallurgical wastewater are large water volume, various types, and complicated water quality.

The content of the food industry is extremely complex, including the production process of sugar, brewing, meat, dairy processing, etc. The discharged wastewater contains organic matter, has strong oxygen consumption, and a large amount of suspended matter is discharged with the wastewater.

Printing and dyeing wastewater is wastewater discharged from printing and dyeing plants mainly processing cotton, hemp, chemical fiber and blended products. Printing and dyeing wastewater has a large amount of water, and each printing and dyeing process consumes 100 to 200 tons of water, of which 80 to 90% is waste water.

Sources of wastewater for chemical raw materials include workshop process water, equipment pipeline clearing wastewater, wastewater extraction or refining process, solid-liquid separation wastewater, workshop staff clean water and plant domestic wastewater.

Petrochemical industry is a series of organic matter processing processes mainly consisting of petroleum as raw materials, such as cracking, refining, fractionation, reforming and synthesis. The wastewater produced in the production is complex, the water quality and water volume fluctuate too much, the pollutant concentration is high, and it is difficult to degrade.

Powder pneumatic conveying refers to the way in which the kinetic energy or static pressure of the air in the pipeline enables the material to be transported according to a specified route. The advantages of pneumatic conveying are high production efficiency, simple equipment construction, use and management.