公开(公告)号：US20140061125A1

公开(公告)日：2014-03-06

申请号：US13981887

申请日：2011-09-21

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Xie Quan ,  Yaobin Zhang ,  Yiwen Liu ,  Huimin Zhao ,  Shuo Chen ,  Yang Li

IPC: C02F3/28

CPC classification number: C02F3/28 ,  C02F1/705 ,  C02F3/101 ,  C02F3/107 ,  C02F3/2826 ,  Y02W10/15

Abstract: The invention discloses a wastewater processing method of hydrolysis-acidification enhanced by addition of zero-valent iron (ZVI), including the following steps: 3˜6 ZVI-filling layers are settled in the middle of an anaerobic hydrolysis-acidification reactor. Excess sludge taken from sewage treatment plant using as seed sludge is added into this anaerobic hydrolysis-acidification reactor for startup and domestication. In the present invention, ZVI are added into this anaerobic hydrolysis-acidification reactor to accelerate organic matters degradation and produce more acetic acids, accompanied with higher COD removal obtained. ZVI can be protected from rust in this anaerobic biological environment due to the air isolation. Also, ZVI can enhance anaerobic hydrolysis of wastewater through reducing refractory pollutants involved in wastewaters. This novel method made the effluent from the hydrolysis-acidification reactor present less COD concentration and simpler substrate form, benefiting for the following anaerobic methanogenesis or aerobic treatment.

Abstract translation: 本发明公开了通过添加零价铁（ZVI）提高水解酸化的废水处理方法，包括以下步骤：3〜6个ZVI填充层沉淀在厌氧水解酸化反应器的中间。 将用作种子污泥的污水处理厂取得的多余污泥加入到厌氧水解酸化反应器中进行启动和驯化。 在本发明中，将ZVI加入到该厌氧水解酸化反应器中以加速有机物降​​解并产生更多的乙酸，伴随着更高的COD去除。 由于空气隔离，ZVI可以在这种厌氧生物环境中防止生锈。 此外，ZVI可以通过减少废水中的难溶性污染物来增强废水的厌氧水解。 这种新方法使得水解酸化反应器的流出物具有更少的COD浓度和更简单的底物形式，有利于以下厌氧甲烷生成或需氧处理。