Hazama Corporation

Other

Terunobu Maeda

Atsunori Negishi

Toshio Enokida

Yasunori Kimura

Reiko Tanaka

Hiromi Uchida

Tsuyoshi Sugio

Junji Igawa

Yasuo Nogami

A method for the remediation of contaminated soil directly and effectively removes the contaminants such as organic halides from the contaminated soil, using remediation agents for soil. In more detail, the agents include a slurry of fine iron particles in which the fine iron particles having average particle size less than 10 &mgr;m are dispersed in water; and an aqueous suspended liquid that contains fine iron particles having average particle size less of 1 to 200 &mgr;m and a hydrophilic binder; and these agents are employable for the method for the remediation of contaminated soil.

Remediation agent for contaminated soil and method for the remediation of soil

A method for the remediation of contaminated soil comprising causing a carbonic acid aqueous solution to penetrate into the soil to liberate and remove contaminants contained in the soil.

Method for the remediation of soil contaminated with organic halide compounds

To provide a,growth inhibitor, a cement composition, and a cement structure which are capable of inhibiting effectively growth of,not only in the neutral pH range but also in the acidic pH range of 4 or below, of which active component metal ions are sufficiently prevented from being dissolved and released when contained in a cement structure, and of which effect can be maintained for a prolonged period of time. The inhibitor contains a first component selected from the group consisting of nickel phthalocyanine powders, powders of a nickel phthalocyanine derivative, and mixtures thereof, and a second component selected from the group consisting of tungsten powders, powders of a substantially water-insoluble tungsten compound, a water-soluble salt of tungstic acid turning to substantially water-insoluble when reacted with cement, and mixtures thereof.

Thiobacillus thiooxidansgrowth inhibitor, cement composition, and cement structure

Thiobacillus thiooxidans growth inhibitor

Dephosphorizing material and dephosphorizing method

Dephosphorizing material and method of dephosphorization

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Tokyo, Japan

Terunobu Maeda