Title:
ACTIVATOR FOR SOIL HEAVY METAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/029731
Kind Code:
A1
Abstract:
An activator for soil heavy metal and a preparation method therefor, which belong to the technical field of soil remediation. The activator is made from the following raw materials in parts by weight: 60-140 parts of an activating substance, 50-500 parts of a sulfur-containing compound, 0-1000 parts of an organic material of 10% of the water content, 0-500 parts of an alkaline substance calculated by sodium hydroxide, 0-500 parts of a reducing substance, and 0-200 parts of water. The activator has very strong bonding capability to heavy metals and extremely strong specificity. The contents of the heavy metals, in particular cadmium, copper, lead and mercury, in the soil solution are greatly improved after the activator has been applied to the soil, The arsenic content in the soil solution is greatly improved under flooded conditions, and the activator can be directly applied to phytoremediation and washing remediation of the soil heavy metals. During the application process, the fertilizer is simple to operate, has a low amount, a low price, and low use costs, and is generally applicable to Chinese dry lands polluted by cadmium to heavy, medium and light degrees.
Inventors:
SHAO GUOSHENG (CN)
Application Number:
PCT/CN2015/081064
Publication Date:
March 03, 2016
Filing Date:
June 09, 2015
Export Citation:
Assignee:
CHINA NAT RICE RES INST (CN)
International Classes:
C09K17/42
Domestic Patent References:
| WO2012176892A1 | 2012-12-27 |
Foreign References:
| CN104263378A | 2015-01-07 | |||
| CN103242850A | 2013-08-14 | |||
| CN103521508A | 2014-01-22 | |||
| CN103030450A | 2013-04-10 |
Attorney, Agent or Firm:
HANGZHOU ZHEKE PATENT AGENCY(GENERAL PARTNERSHIP) (CN)
杭州浙科专利事务所（普通合伙） (CN)
杭州浙科专利事务所（普通合伙） (CN)
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