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Journal Article 3

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2015 1

2011 1

2003 1

Keywords

Expanded Granular Sludge Bed-Biological Aerated Filter (EGSB-BAF) integrated system 1

Tibet 1

Yangbajing 1

anaerobic ammonium oxidation (ANAMMOX) 1

genesis 1

high temperature geothermal 1

mafic-ultramafic intrusions； magmatic Ni-Cu sulfide deposits； small intrusions forming large deposits； ore genesis； prospecting potential 1

methano-genesis 1

shortcut nitrification-denitrification 1

the influence of influent 1

thermal reservoirs 1

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The Basic Characteristics of the Yangbajing Geothermal Field-A Typical High Temperature Geothermal System

Duo Ji

Strategic Study of CAE 2003, Volume 5, Issue 1,   Pages 42-47

Abstract:

The Yangbajing Geothermal Field is one of non-volcanic high-temperature geothermal fields. The Yangbajing convective system consists of two reservoirs at different depth. The shallow reservoir is constitued of loose alluvium of Quanternary and altered granite of Himalaya. Temperature inside the shallow reservoir is in the range of 150〜165℃ at the depth of 180〜280 m. Shallow thermal water is of sodium chlorite type and mixture of deep hot water and cold groundwater. The deep reservoir is in a slip-fault zone of the core complex. It is a veinor zone-shape reservoir. The deep reservoir can be divided into two parts. The upper parts of temperature 251℃ is at depths ranging from 950m to 1350 m. The lower part is below 1850 m , in which the measured temperature is as high as 329℃ . The deep thermal water is of sodium chlorite type, too. Carbon dioxide-is a major non-condensate gas in the shallow and deep reservoir.

Keywords： high temperature geothermal     thermal reservoirs     genesis     Yangbajing     Tibet    

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Influence of influent on anaerobic ammonium oxidation in an Expanded Granular Sludge Bed-Biological Aerated Filter integrated system

Daijun ZHANG, Cui BAI, Ting TANG, Qing YANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 2,   Pages 291-297 doi: 10.1007/s11783-010-0270-6

Abstract: Shortcut nitrification-denitrification, anaerobic ammonium oxidation (ANAMMOX), and methanogenesis have been successfully coupled in an Expanded Granular Sludge Bed-Biological Aerated Filter (EGSB-BAF) integrated system. As fed different synthetic wastewater with chemical oxygen demand (COD) of 300–1200 mg·L and of 30–120 mg·L at the outer recycle ratio of 200%, the influence of influent on ANAMMOX in the integrated system was investigated in this paper. The experimental results showed that higher COD concentration caused an increase in denitrification and methanogenesis but a decrease in ANAMMOX; however, when an influent with the low concentration of COD was used, the opposite changes could be observed. Higher influent concentration favored ANAMMOX when the COD concentration of influent was fixed. Therefore, low ratio would decrease competition for nitrite between ANAMMOX and denitrification, which was favorable for reducing the negative effect of organic COD on ANAMMOX. The good performance of the integrated system indicated that the bacterial community of denitrification, ANAMMOX, and methanogenesis could be dynamically maintained in the sludge of EGSB reactor for a certain range of influent.

Keywords： influence of influent     anaerobic ammonium oxidation (ANAMMOX)     shortcut nitrification-denitrification     methano-genesis    

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The theory on small intrusions forming large deposits and its exploration significance—Taking for magmatic Ni-Cu sulfide deposits example in the northwestern of China

Li Wenyuan,Zhang Zhaowei and Chen Bo

Strategic Study of CAE 2015, Volume 17, Issue 2,   Pages 29-34

Abstract:

The theory on small intrusions forming large deposits put forward by academician Zhongli Tang was a recapitulative summary by Long-term studying of magmatic Ni-Cu sulfide deposits which related to mafic-ultramafic intrusions. And this theory got a common response by exploration industry in the world. Many mineral exploration practices have effectively illustrated that the hypabyssal and small intrusion could always form the larger ore deposits. Our study is about the mineralization of Ni-Cu sulfide deposits which related to mafic-ultramafic intrusions in the northwestern of China. In this paper，we have discussed the theory of small intrusions forming large deposits，considering that mantle magma deep part liquation and injection is the main mechanism of this theory. And another theory of magma conduit systems，may cause the local enrichment of mineral，and like that theory of small intrusions forming large deposits. After summarizes the prospecting fact of magmatic Ni-Cu sulfide deposits in the northwestern of China，we expand the scientific connotation of the theory on small intrusions forming large deposits，and make it more realistic meaningful in guiding prospecting.

Keywords： mafic-ultramafic intrusions； magmatic Ni-Cu sulfide deposits； small intrusions forming large deposits； ore genesis    

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Title Author Date Type Operation

The Basic Characteristics of the Yangbajing Geothermal Field-A Typical High Temperature Geothermal System

Duo Ji

Journal Article

Influence of influent on anaerobic ammonium oxidation in an Expanded Granular Sludge Bed-Biological Aerated Filter integrated system

Daijun ZHANG, Cui BAI, Ting TANG, Qing YANG

Journal Article

The theory on small intrusions forming large deposits and its exploration significance—Taking for magmatic Ni-Cu sulfide deposits example in the northwestern of China

Li Wenyuan,Zhang Zhaowei and Chen Bo

Journal Article