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Countermeasures for soil and groundwater contamination

Environmental field

Countermeasures for soil and groundwater contamination

Phase 1 Data Collection & Research

Phase 2 General condition survey and Detailed survey

Environmental assessment

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Countermeasures for soil and groundwater contamination

Features:	We have been engaged the technologies of search and development of underground resources for years. Now, we are developing it, doing search of soil contamination, and cleaning it. In a field of buying/selling or investment of a real estate, a soil contamination possibility assessment is strongly required. So, we consistently provide our company technology from such the assessment to the search of a contamination situation, the countermeasure decision, a cleaning action and construction.
Example of Application, Introductions/Achievements:	Soil contamination possibility assessment required for buying/selling, investment, and collateral appraisal of real estate, Search of a contaminated situation, Cleaning action and construction, Research and development of soil cleaning method and device
Key Words:	Soil Contamination Countermeasures Law Phase 1: Data Collection & Research Phase 2: General condition survey and Detailed survey Site environmental diagnosis Real estate risk assessment Search corresponding to the concern points for appraising a real estate Oil contamination survey High density well installation construction Oxidizer-combined recycling remediation method Bioremediation VOCs removing device “Mighty-eco” Iron removing device “Red Water Buster” Mitsubishi Materials Natural Resources Development Co. Ltd. (former name)
Related Department:	Environmental Engineering Division
Contact Us:	Mitsubishi Materials Techno Corporation, Sales Management Department
Documents:	-

Phase1 Document, etc., search

Phase2 General condition survey and Detailed survey
Oil contamination survey

*Soil contamination surveys, including detailed surveys, under the Soil Contamination Countermeasures Law
(effective from February 15, 2003).

High density well installation construction
Oxidizer-combined recycling remediation method
Bioremediation
Mighty-Eco
Red water Buster

Main methods of Countermeasures

Methods of Countermeasures		Application					Outline
Methods of Countermeasures		Heavy metals	VOCs	Oils	Agricultural chemicals	Complex contamination	Outline
Excavating and removing method:		○	○	○	○	○	This method is for excavating and removing contaminated soil from an object ground, and treating it out of the object ground.
Confining:		○			○		This method is for mixing and solidifying a solid agent such as cement to a contaminated soil and physico-chemically stabilizing a contaminated substance.
In-situ cleaning	Soil gas suction method:		○				This method is for sucking soil gas including VOCs by a blower or a vacuum pump and performing an absorption treatment by activated carbon or a decomposition treatment by biotechnology.
	Groundwater pumping well method:	○	○	○	○	○	This method is for pumping up groundwater and removing VOCs and heavy metals. VOCs is recovered and decomposed by activated carbon, ultraviolet radiation, ozone, or biotechnology, and heavy metals are subjected to a chemical treatment such as filtration, condensation/precipitation, oxidization, reduction, and neutralization.
	Oxidizer injection method:		○				This method is for injecting an oxidizer such as hydrogen peroxide aqueous solution to a groundwater aquifer from an injection well, and oxidizing and decomposing VOCs.
	Reducing agent injection method:		○				This method is for injecting a reducing agent to a groundwater aquifer from an injection well, and reducing and decomposing VOCs.
	Microbial decomposition method (Bioremediation):		○	○			This method is for injecting a nutrient for activating microbes to a groundwater aquifer from an injection well, and decomposing VOCs with microbes.

Methods of Countermeasures		Characteristics of Mitsubishi Materials Techno
Excavating and removing method:		This method is a certain and low cost method for excavating and removing the contaminated soil using the treatment in the cement plant of Mitsubishi Materials Corporation.
Confining:
In-situ cleaning	Soil gas suction method:
	Groundwater pumping well method:	High density well installation construction Mighty-Eco (This method is adopted as “a development spread investigation of general equipment for cleaning contaminated groundwater in Heisei 13 by Ministry of Environment.) Red Water Buster
	Oxidizer injection method:	Oxidizer-combined recycling remediation method (This method uses “Examination and search of a low cost and low load type soil contamination search countermeasure technology in Heisei 15 by Ministry of Environment”.)
	Reducing agent injection method:
	Microbial decomposition method (Bioremediation):	Bioremediation (EDC adding method)