The Influence of Water Quality on the Reuse of Lignite-Derived Waters in the Latrobe Valley, Australia

Butler, Craig John; Green, Alison Mary; Chaffee, Alan L.

doi:10.1080/07349340590927387

Cited by 11 publications

(5 citation statements)

References 9 publications

(11 reference statements)

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“…Environmental Protection and Resources Exploitation II From table 2 it can be conclude that PH and COD are not up to standard, and the rest of items conform to standard. The PH of condensate water partial acid is in accords with the description of literature at home and abroad [15] , and NH3-N and TP are far lower than industrial water quality standard. COD is a measurement of organic matter content in water, and the COD content decreases with increasing the power of microwave.…”

supporting

confidence: 81%

Study on the Feasibility of Recycling Condensate Water of Lignite by Microwave Dehydration Treatment

Tang

Huang

Shen

et al. 2014

AMR

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As a low-rank coal, the high moisture content of lignite need to be dehydrated and refined before combustion. To alleviate the water shortage situation of lignite region, this paper put forward a way of microwave dehydration to recycling the water out of lignite. By detecting the chemical oxygen demand, ammonia nitrogen, total phosphorus, hardness, ions, organic compounds of lignite, it can be concluded that the dehydration ratio of lignite reaches 70~80%, and the water quality as ammonia nitrogen, total phosphorus was close to industrial standard. While the chemical oxygen demand exceeded the standard scope as well as trace amount of poisonous metal elements and organic compounds causing cancer, this will become the main task of subsequent purification process.

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supporting

confidence: 81%

Study on the Feasibility of Recycling Condensate Water of Lignite by Microwave Dehydration Treatment

Tang

Huang

Shen

et al. 2014

AMR

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“…Future implementation of nonevaporative coal drying processes will produce large volumes of coproduct water. For example full implementation of MTE processing to current Latrobe Valley power stations would result in up to tens of gigalitres of product water per annum [5]. Due to the higher temperatures of HTD and the associated degradation of carboxylic acid functional groups, MTE water is generally expected to contain less inorganic and organic contamination.…”

Section: Introductionmentioning

confidence: 99%

The Fate of Trace Elements During MTE and HTD Dewatering of Latrobe Valley Brown Coals

2007

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The nonevaporative brown coal dewatering technologies, Mechanical Thermal Expression (MTE) and Hydrothermal Dewatering (HTD), are being evaluated in an attempt to increase the efficiency of coal drying compared with current evaporative methods.Product waters from each of the three major Latrobe Valley mines were prepared under both MTE (200 C and 15 MPa mechanical pressure) and HTD (300 C and 12 MPa) conditions. Comparison of the relative abundance of individual inorganic components across the two processes generally reflected their form (dissolved, exchanged, or mineral) in the parent coals. For MTE the data were complicated by leaching of rig components (principally bronze). MTE-derived waters contained greater amounts of Ag, As, Cd, Cr, Cu, Hg, Mo, Ni, Sn, and Zn. HTD waters had greater amounts of Al, B, Ba, Ca, Fe, K, Mg, Mn, Na, Pb, Se, Sr, Tl, and V. Dissolved organic carbon was five times higher in the HTD products as a result of the higher processing temperature employed. Many species (Al, Ag, As, Cd, Cr, Cu, Hg, Mo, Ni, Pb, V, Se, and Zn) were found to be above acceptable guidelines for discharge to the environment.

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“…Qi [5] used solid phase extraction-gas chromatography-mass spectrometry (SPE-GC-MS) to identify the low molecular organic compounds in the MTE product water. Other researchers [1,5] reported that 20% of the organic carbon could be identified by this method and more than 97% of the identified compounds are carboxylic acid compounds, while the remainder are mainly phenolic, carboxylate, aldehyde and ketone compounds. The organic species in the product water increases with processing severity (high temperature and pressure) and the extent of moisture reduction [5].…”

Section: Introductionmentioning

confidence: 99%

“…MTE dewatering from high moisture content (about 60%) to low moisture content (about 25%) resulted in large quantities of wastewater. Butler et al [1] showed that the Latrobe Valley power stations could produce about 20 GL of expressed water per annum using the MTE process. Therefore, wastewater treatment after the dewatering process is an important issue which needs to be addressed.…”

Section: Introductionmentioning

confidence: 99%

A comparison of acid treatment in the dewatering of Chinese and Australian lignites by mechanical thermal expression at high temperatures

Yeasmin

Miao

et al. 2016

Fuel Processing Technology

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The Influence of Water Quality on the Reuse of Lignite-Derived Waters in the Latrobe Valley, Australia

Cited by 11 publications

References 9 publications

Study on the Feasibility of Recycling Condensate Water of Lignite by Microwave Dehydration Treatment

Study on the Feasibility of Recycling Condensate Water of Lignite by Microwave Dehydration Treatment

The Fate of Trace Elements During MTE and HTD Dewatering of Latrobe Valley Brown Coals

A comparison of acid treatment in the dewatering of Chinese and Australian lignites by mechanical thermal expression at high temperatures

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