高效复合生物流化床反应器三相分离区污泥对处理效果的影响

对采用高效复合生物流化床反应器处理中高浓度废水进行了试验研究.研究表明,三相分离区形成稳定的污泥层,有利于进一步提高反应器对污水的净化效果:曝气区出水经三相分离区污泥层的接触吸附及截滤作用,可使出水中悬浮物被有效去除;硝态氮在此缺氧的污泥层中可利用剩余碳源进行反硝化,使总氮去除率得以显著提高;出水水流中的BOD5则在通过污泥层时被吸附和截滤后,在反硝化作用中被作为碳源利用而得到进一步去除.

Influence of three-phase separation region sludge in high-efficient compound fluidized bed bio-reactor on processing efficiency

The study on high and medium density wastewater treatment has been carried out by using a highly-efficient compound fluidized bed bio-reactor.The experimental results indicate that the stable sludge layer formed in the three-phase separation region is helpful in enhancing the efficiency of purification in that: suspended solids in the effluent are removed effectively by contact absorption and filtration of the sludge layer;the total nitrogen removal rate is increased by the denitrification process caused by the reaction of nitric nitrogen with remaining carbon sourced under anoxic conditions present in the sludge layer;BOD5 in the effluent is reduced further after the influent had passed through the sludge layer where contact absorption and filtration and denitrification took place.