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Waste disposal system
| Sophia has been creating new systems to make heavy metal in ash, sludge and wastewater stable, using techniques learnt from stabilzing polluted soil and treating wastewater. |
| 1. Ash Stablizing System |
| Paper companies, incinerators, and fired power plants, usually create ash that contains boron, fluoride, lead and other harmful substances. |
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| 1-1 The Ash from Disposal Sites |
| The Ash Stabilazation System has been spotlighted as a new way of processing materials, in the private sector. The Table Test and on site testing was conducted on the Ash Stabilization System at regular disposal sites run by local government and also regular disposal companies, and the results were good. Chelation used to be used. |
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| 1-2 Ash from Paper Factories |
| In recent years, it has been discovered that the ash from paper factories has contained heavy metals over the environmental limit because of a change in the way factories make paper (the new materials they use). This ash is called paper sludge (PS). Companies using a bio-mass boiler such as an RPF to help to burn waste, have had lead and fluorine problems, and this has been a major problem up to now. For these problems the Ash Stabilizing System is a proven effective solution. |
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| 1-3 Advantages of the System |
| The Ash Stabilizing System has the advantages listed below, compared to the older Chelator System that was used by paper companies and disposal sites. |
Cost
* Low-cost (about half price)
Performance
* Inorganic mineral supplies to be used by the system are very safe
* High adsorption capacity (containment)
* Long-term stability (acid or alkali conditions do not affect this system)
Usability
* It does not break down releasing the waste or have an odor
* The introduction of new equipment is not necessary
* Liquid materials are also available, and are easy to mix into the contaminated target |
| 2. Sludge Stabilizing System |
| There have been many problems with soil/sludge that contains arsenic, boron and heavy metals, etc., at construction sites, and sewage treatment plants. |
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| 2-1 If the Amount of Contamination Goes Over the Second Leakage Limit |
| Contaminated sludge that is over the allowed limit, has to be processed as special waste, and costs a lot to dispose of. However, the Sludge Stabilizing System reduces the amount of contamination below the required limit and then lets you bury it, at the regular price of landfil. |
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| 2-2 If the Contamination is Higher than the Enviromental Standard but Less than the Second Leakage Limit |
| The Sludge Stabilizing System, can reduce contaminated leakage in most cases. Allowing contaminated sludge to be recycled. After the sludge goes through the Sludge Stablizing System it can then be processed at a disposal site. This stabilized sludge can then be sold as backfill or filling material. |
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| 2-3 Advantages of the System |
| The Sludge Stablizing System's advantages are similar to that of the Ash Stablizing System. It has the advantages listed below compared to the older Chelator System that was used. It can make highly contaminated soil that exceeds the Second Leakage Limit less dangerous. So, it can be processed and disposed of at a regular disposal site. The processed sludge does not cause any problems at the disposal sites either. |
Cost
* Low-cost (less than half price)
Performance
* Inorganic mineral supplies to be used by the system are very safe
* High adsorption capacity (containment)
* Long-term stability (acid or alkali conditions do not affect this system)
Usability
* It does not break down releasing the waste or have an odor
* The introduction of new equipment is not necessary
* Liquid materials are also available, and are easy to mix into the contaminated target
* It can be mixed with cement (it is easy to control the strength as well) |
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| Reducing the Burden of Disposal Sites |
* Prolong the life of the disposal facility, and reduce maintenance costs
* Decrease illegal dumping |
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