The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 29, 2019
Filed:
Mar. 05, 2019
China University of Petroleum (East China), Qingdao, CN;
Yingyun Qiao, Qingdao, CN;
Yuanyu Tian, Qingdao, CN;
Kechang Xie, Qingdao, CN;
Zhaohe Yang, Qingdao, CN;
Xue Ming, Qingdao, CN;
Zhimei Zhang, Qingdao, CN;
China University of Petroleum (East China), Qingdao, CN;
Abstract
Providing a environment-friendly and in situ immobilized method of renovating heavy metal contaminated soil with humic acid substance, comprising: while the heavy metal contaminated soil being pulverized, adding humic acid substance into the soil according to weight ratio 5-20:1 of the humic acid substance to the total heavy metals contained in the soil, then aging the soil for more than 24 hours after the pulverization process; 2) adding 1-3 parts by weight of semi-coke bacterial fertilizer to 100 parts by weight of the water-stable granular structures, and mixing uniformly. The provided method for renovating heavy metal contaminated soil is reasonable with simple and safe operation and a low production cost, the method can be used for performing in-situ reduction, complexation and solidification, permanently encapsulating and blocking the heavy metals, eradicating secondary pollution and rebound of the treated pollutants, improving the natural environment with rapid renovation and desirable effect, the restored soil can normally grow trees and flowers and plant a variety of crops, the treatment cost is low, and the method may be applied in a wide range and produce improved economic and social benefits, thereby fulfill the predetermined purpose desirably.