| abstract |
To provide an apparatus that advantageously performs hydrogen sulfide treatment (desulfurization), organic wastewater treatment, and nitrogen removal treatment. SOLUTION: A membrane-carrying porous electrode 1, a counter electrode 2 in contact with an oxidizing substance, a membrane electrode assembly having a diaphragm 3 sandwiched between the porous electrode 1 and the counter electrode 2, and both electrodes A battery and electrolysis apparatus having means for supplying and discharging liquid or / and gas to each of the above. [Selection] Figure 1 |