耐酸菌群在合成废水处理中的应用

Application of acid-resistant bacteria in synthetic wastewater treatment

煤制油合成废水经NaOH溶液调节pH值至5左右送至污水处理装置,大量的碱液用量导致合成废水盐量大增。分析了合成废水水质,在不加碱的情况下,既能满足厌氧处理单元工艺要求,又能降低合成废水中盐量,降低生产运营成本是本次用耐酸菌群替代加碱操作的目的。采用新型耐酸转化技术,在厌氧预处理单元采用新型菌群分离器,实现耐酸转换,降低有机酸对生化系统的冲击,实现高酸合成废水的厌氧生化预处理,替代现有成本高昂的加碱操作,并且降低合成废水中盐含量。

The wastewater from coal-to-oil synthesis is sent to the sewage treatment plant by adjusting the PH value to about 5 with NaOH solution.A large amount of alkali liquor leads to a large increase of salt in synthetic wastewater.The water quality of synthetic wastewater is analyzed. It can meet the technological requirements of anaerobic treatment unit without adding alkali.It can also reduce the amount of salt in synthetic wastewater and the cost of production and operation,which is the purpose of replacing alkali adding operation with acid-resistant bacteria.A new acid-resistant conversion technology was adopted,and a new flora separator was used in the anaerobic pretreatment unit to realize acid-resistant conversion.Reducing the impact of organic acid on biochemical system and realizing anaerobic biochemical pretreatment of high acid synthetic wastewater.It replaces the existing highcost alkalinization operation and reduces the salt content in synthetic wastewater.