| 1 | The performance of denitrification in the zeolite biological aerated filter and the bioregeneration of zeolite; | |
| 2 | This paper analyses the evaluation and classification of the water quality at Jixi section in the main tributary of Muling River and analyses the exceeding standard factor. | |
| 3 | The third one lasted from the end of Muleng Formation depositing to the end of the end of Dongshan Formation depositing and appeared to be thrusting and folding. | |
| 4 | Clay minerals in the outcropped sandstone from Lower Cretaceous Chengzihe Formation and Muling Formation in Jixi Basin were analyzed by X-ray diffraction. | |
| 5 | The purpose of this article is to improve the development and utilization of the zeolite in Muling in Heilongjiang Province by the research on the ore's environmental protection application. |
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