At its production,wastewater contains a large number of hazardous sulfate reduction bacteria,the wastewater not only corrodes the equipment,but bring about harm to soil and environment.

• 由于废水中含有大量有害的硫酸盐还原菌，它不仅腐蚀设备，而且还会造成土壤和环境危害。因此，在回注之前必须对硫酸盐还原菌进行处理达到回注的要求。