DECONTAMINATION AGENT, METHOD OF PRODUCING DECONTAMINATION AGENT AND METHOD OF DECONTAMINATING CONTAMINATED SOIL

• Main Author: MATSUZAWA KATSUO
• Format: Patent
• Language: English; Japanese
• Published: 05.02.2015
• Subjects: CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; DECONTAMINATION ARRANGEMENTS THEREFOR; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; DISPOSAL OF SOLID WASTE; HUMAN NECESSITIES; HYGIENE; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PHYSICS; PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULARRADIATION OR PARTICLE BOMBARDMENT; RECLAMATION OF CONTAMINATED SOIL; RECLAMATION OF CONTAMINED SOIL SOIL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATING RADIOACTIVELY CONTAMINATED MATERIAL

PROBLEM TO BE SOLVED: To produce a decontamination agent which can decontaminate without use of large amounts of water and allows easy separation after decontamination and a method of decontaminating soil using the decontamination agent.SOLUTION: A decontamination agent is produced by irradiating a natural zeolite crushed to grain sizes of 0.5-7.0 mm with UV rays of wavelengths of 180-280 nm. A method of decontaminating contaminated soil comprises adding the decontamination agent to the contaminated soil in a wt. ratio of 10-30% and mixing well, leaving standing for several months, sieving by using a sieve of an opening of 0.5-5.0 mm and providing soil passing through the sieve as decontaminated soil. 【課題】大量の水を使用することなく除染でき、しかも除染後に分離が簡便な除染剤を製造する。そして、この除染剤を使用した土壌の除染方法を提供する。【解決手段】粒径が０．５〜７．０ｍｍに粉砕した天然ゼオライトに、波長が１８０〜２８０ｎｍの紫外線を照射して除染剤を製造する。この除染剤を、汚染土壌に対し重量比で１０〜３０％加えてよく混ぜ、数か月放置した後、目の大きさが０．５〜５.０ｍｍの篩を使用して篩い分けし、篩の目を通過した土壌を除染処理済みの土壌とする。【選択図】図１