| 摘要 |
<p>PURPOSE:To improve treatment efficiency by separating and recovering gaseous hydrogen from the decomposed gas which is generated from the inside of a methane fermentation tank and is discharged from a decomposed gas removing device under the discharge pressure of the decomposed gas by a hydrogen separating membrane device. CONSTITUTION:The decomposed gas generated by the anaerobic treatment of the waste water introduced in the methane fermentation 1 is sucked away by a blower 2 via a water draining tank 9 and a desulfurizing device 10. The gaseous hydrogen is separated from the decomposed gas by the discharge pressure of the decomposed gas in the hydrogen separating membrane device 4 and the separated gaseous hydrogen is stored in a storage tank 6. On the other hand, the decomposed gas from which the gaseous hydrogen is separated is supplied as fuel to a boiler 13 via a gas holder 8. The anaerobic treatment of the waste water is thus rapidly executed in spite of a high concn. and the treatment efficiency is improved. Since the decomposed gas removing device is commonly used as a driving device for the sepn. of the gaseous hydrogen, the waste water treatment and the gaseous hydrogen recovery are executed well with the small driving power.</p> |
