| 1 | Useful chemical fertilizer can we make from the waste liquid . | |
| 2 | A process of removing impurity from pickling waste liquor had been developed. | |
| 3 | The remaining liquid, which contains the leftover salts, shoots out of the system at high pressure. | |
| 4 | Nd, collection life waste, industry and commercial waste, building waste, medical waste and waste liquid. | |
| 5 | Screening high-efficiency flocculant-producing bacteria by the effluent of bio-hydrogen production reactors was investigated. |