|
|
 |
| Catalytic Wet Oxidation Wastewater Treatment |
|
In recent years, new wastewater treatment systems have been required which can give energy and space savings and a broad range treatment of pollutants such as COD, nitrogen compounds and sulfur compounds. The catalytic wet oxidation wastewater treatment (NSLC Wastewater Treatment System) introduces air into the wastewater containing pollutants such as COD, nitrogen compounds and sulfur compounds, and performs highly efficient oxidation, decomposition and purification in one stage using the catalyst under high temperature / pressure conditions in order to meet the above requirements. Nippon Shokubai's "NSLC Wastewater Treatment System" has been introduced and accepted in Japanese and overseas customers. |
 |
1.Merits |
| 1. |
Simultaneous treatment of COD and removal of nitrogen and sulfur compounds. |
| 2. |
Low running cost. |
| 3. |
A compact plant design for low space requirements. |
| 4. |
Stable continuous and automatic operation. |
| 5. |
Even CODcr of 20,000mg/L in wastewater can be treated without supplying any auxiliary fuel. |
| 6. |
Recovered energy as steam from the oxidation reaction of the wastewater. |
| 7. |
Deodorization and decolorization. |
| 8. |
Clean, SOx, NOx, and Dioxins free off gas. |
| 9. |
No secondary pollutants, like sludge and ashes. |
| 10. |
Treated on the high performance water can be reused. |
2. Applicable wastewater |
|
| 1) COD components |
formalin, acetaldehyde, glyoxal, phenol, dioxane, methyl methacrylate (MMA),
formic acid, acetic acid, acetone, tertahydrofuran (THF) , methyl ethyl ketone
(MEK), methyl alcohol, terephthalic acid, ethylene glycol, pentaerythritol etc. |
| 2) Sulfur compounds |
sodium sulfide, sodium thiosulfate, dimethyl sulfoxide (DMSO) etc.
ex. wastewater from ethylene plants and spinning plants etc. |
| 3) Nitrogen compounds |
ammonia, isocyanate, acrylonitrile etc. |
| 4) Organic chlorides |
dioxin etc. |
3.Catalyst |
|
| The catalysts which were developed entirely by Nippon Shokubai are charged into the reactor, and they are cylindrical pellets. |
4.Exterior image |
|
 |
|
