Title:
【発明の名称】残留汚染物質である鉱油に基づく物質で汚染された土壌領域を生物学的に清浄化するための単純化方法
Document Type and Number:
Japanese Patent JP2001515785
Kind Code:
A
Abstract:
The invention relates to a simplified method for biologically cleaning almost any-sized area of soil which is contaminated with mineral oil-based hydrocarbons (MHC), and especially the leftover pollutants associated with mineral oil-based hydrocarbons. According to said method, the contaminated soil is treated with concentrated nutrients to stimulate and help the growth of MHC-consuming micro-organisms so that they can be cultivated and reproduce more quickly. The inventive method is characterised in that it is particularly easy to carry out and in that after a) advance dampening/watering if necessary, b1) the soil being cleaned is broken up to a considerable depth in at least one process, b2) the concentrated nutrients are added in the form of an aqueously dilute emulsion and/or dispersion, said concentrates being sprayed essentially evenly, also in at least one process, and c) the soil is then thoroughly re-watered. Steps b1) and b2) can be carried out once or repeatedly. The following sequences are preferable: (b1)=>(b2); (b2)=>(b1); (b1)=>(b2)=>(b1) or (b2)=>(b1)=>(b2).
Inventors:
Bettina Copp-Holtvishe
Ursula Lauer
Ursula Lauer
Application Number:
JP2000510546A
Publication Date:
September 25, 2001
Filing Date:
August 29, 1998
Export Citation:
Assignee:
Cognis Deutschland GmbH
International Classes:
B09C1/10; C12N1/26; C12S9/00; (IPC1-7): B09C1/10
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)