Rational use of concrete batching plant wastewater

Rational use of concrete batching plant wastewater
The current water shortage and water pollution continue to threaten the human, as the technology continues to progress in modern industrial production, the accelerating pace of urbanization, domestic water, industrial water consumption is increasing, people's production and living environment are constantly subjected to persecution, human health have also been a great threat.
Plays an irreplaceable role in promoting the process of urbanization as urban construction indispensable raw material of concrete. However, according to incomplete statistics, an annual production capacity of 100,000 cubic meters of concrete mixing station, only cleaning the concrete mixing transport equipment the jiangshui formed every day up to 20-40 cubic meters, of which the average of each cleaning a concrete truck 0.76-1.1 cubic meters of water. Waste of water resources is a staggering figure.
At present, the sources of wastewater for concrete mixing station two things: first cleaning of the concrete mixing plant and concrete mixers, waste water; rinse the wastewater generated in the production sites. These wastewater containing strong alkaline substances such as cement, gravel, fly ash, slag, additives, PH value of up to 11-12, and the insoluble matter content of about 2000-3500mg / l. If these wastewater discharge, not only caused the waste of water resources, but also pollution of the environment. Waste water used in concrete production can not only achieve a certain economic benefits can also get the corresponding social benefits.
The main disposal precipitation separation: waste water into the settling tank after the precipitation will be clean water before discharge, sediment residue transported by a professional company handle, which is currently the country generally used in wastewater disposal. In this way the space occupied by large, is not conducive to civilized production and clean up the residue the higher cost.