WEBNov 10, 2016 · Coal gasifiion wastewater treatment process, especially for the wastewater produced by pressurized fixed bed gasifiion, has already become one of the key factors which restrict the ...
WEBDec 1, 2021 · This work investigated the treatment of WT via cocombustion with coal under different mixing ratios. The combustion of both coal and WT can be divided into three stages, and the combustion stability of the blends for coal and WT reduces relatively. The synergetic effect between two fuels has a positive effect on ignition process of blends.
WEBIn industrial chemistry, coal gasifiion is the process of producing syngas—a mixture consisting primarily of carbon monoxide (CO), hydrogen (H 2), carbon dioxide (CO 2), methane (CH 4), and water vapour (H 2 O)—from coal and water, air and/or oxygen.. Historically, coal was gasified to produce coal gas, also known as "town gas".Coal gas .
WEBSep 1, 2023 · Cumulative effects and metabolic characteristics of aromatic compounds in microbial cells during the biochemical treatment process of coal chemical wastewater. Author links open overlay panel Lu Yang a, Yongjun Liu a b, Aining Zhang a ... This study aimed to investigate the effectiveness of a biochemical treatment system for coal .
WEBNov 1, 2017 · Phenols and ammonia recovery process is a significant part of the CGW treatment to remove sour gas such as H 2 S and CO 2, and recycle the valuable resource in turn, such as phenols and ammonia [5].Nowadays, several types of phenols and ammonia recovery process have been applied to industry [6], [7], [8].The main .
WEBDec 5, 2020 · Coking wastewater is one of coal chemical wastewater, which contains various refractory organic pollutants. To meet the more and more rigorous discharge standard and increase the reuse ratio of coking wastewater, advanced treatment process must be set for treating the biologically treated coking wastewater.
WEBJan 1, 2019 · The wastewater treatment process was firstly developed for Lurgi fixed bed pressurized gasifiion wastewater to deal with the high concentrated phenol and ammonia [22]. It is well introduced in Harbin gasifiion plant and Inner Mongolia Tuke coal fertilizer project [13]. ... Coal gasifiion unit as the core of the entire coaltoSNG ...
WEBJul 1, 2022 · In this study, the biochemical treatment system of coal chemical wastewater (CCW) was constructed to degrade aromatic compounds. The biodegradation time series characteristics of 8 benzene series ...
WEBAug 1, 2018 · The CTL wastewater was collected from a coal liquefaction plant in China. This plant is the first megaton engineering project using direct coal liquefaction technology and has been operating stably for 9 specific process of its sewage treatment plant is presented in Fig. samples were collected from the influent, Fenton .
WEBDec 1, 2017 · Coal chemical wastewater has such characteristics as high concentration of oil, ammonia nitrogen and COD. In this paper, treatment process of coal chemical industry is described mainly, such as pretreatment process, biochemical treatment process and polishing process. Through the recovery of phenol and ammonia and the treatment of .
WEBJul 1, 2023 · In Zhuang et al. [12], the combined process of pure oxygen microbubbles and MBR were studied. They found that the average removal ratios of COD and total petroleum hydrocarbons (TPH) in wastewater were 80 % and 86 %. The above two experimental results show that the MBR process has a good treatment effect on coal chemical .
WEBA process for converting a finely divided carbonaceous material, particularly coal, to a fuel gas. A finely divided or pulverized carbonaceous feed material, such as coal, is pretreated at a temperature of about 700 to 800/sup 0/F in order to destroy the caking properties of a caking coal feed in a fluidized pretreatment zone, or, alternatively to dry a noncaking .
WEBJan 1, 2022 · Table 1 shows the A/A/O process effectively removed organic and inorganic pollutants from CWW. The total COD removal by A/A/O process during the operation period was approximately % with the average COD in the A1 effluent, A2 effluent and O effluent at 2056, 987 and 215 mg L −1, than twothirds of COD was .
WEBJul 6, 2022 · However, few reports on the simultaneous recovery of PGMs from SAC and the synthesis of glass–ceramic via a cotreatment process with coal fly ash (CFA) can be found in the existing literature. Coal fly ash (CFA), an industrial byproduct generated from thermal power plants, can induce serious environmental impacts via direct landfills .
WEBDOI: / Corpus ID: ; A review on the coal gasifiion wastewater treatment technologies: past, present and future outlook article{Ji2016ARO, title={A review on the coal gasifiion wastewater treatment technologies: past, present and future outlook}, author={Qin and Salma .
WEBFeb 1, 2019 · 1. Introduction. Coal seam gas (CSG) is an unconventional resource which has been exploited in recent years as a substitute for coal and oil [1].Gas extraction involves decreasing the water pressure which holds the methane in place in the coal cleats [2, 3].Through this process, significant volumes of associated water are produced .
WEBJun 25, 2020 · Coal gasifiion wastewater (CGW) contains several types of aromatic pollutants, which impart high biotoxicity and reduce the quality of anaerobic treatment. Two types of hydrolysis acidifiion processes, namely microaerobic hybrid reactor (HA1) and upflow anaerobic sludge blanket reactor (HA2), were developed for pretreatment .
WEBJan 20, 2022 · Biochemical treatment is the main process of coal chemical wastewater treatment (Zhao and Liu, 2016). 90% of the pollutants are removed through the biochemical section (Shi et al., 2020a). COD and NH 3 –N in the influent are 2000 mg/L and 120 mg/L, and that in the effluent are 200 mg/L and 20 mg/L, respectively (Zheng et al., .
WEBJun 15, 2020 · The whole treatment process of CPW is shown in Fig. 1. The coal particles are introduced into the drying unit to provide steam for CLG and the remaining dry coal enters into the pyrolysis unit to produce pyrolysis gas and char. The CPW is generated during cooling and separation of pyrolysis gas. The dotted red line represents the impact .
WEBIn this study, the toxic organics removal and biotoxicity reduction of coal chemical wastewater (CCW) along a novel fullscale treatment process based on the pretreatment processanaerobic processbiological enhanced (BE) processanoxic/oxic (A/O) processadvanced treatment process was evaluated.
WEBIn this study, a sequential Fe 0 /H 2 O 2 reaction and biological process was employed as a lowcost depth treatment method to remove recalcitrant compounds from coalchemical engineering wastewater after regular biological treatment. First of all, a chemical oxygen demand (COD) and color removal efficiency of 66 and 63% was achieved at initial pH of .
WEBJan 20, 2017 · 1. Introduction. In Lurgi and BGL (British Gas Lurgi) coal gasifiion process, wastewater containing high concentration of phenol and ammonia are discharged (Zhang et al., 2015).The flow rate of this wastewater is large and included pollutants are various (Wei et al., 2016).The concentration of phenol and COD in the wastewater is in a .
WEBTerms in this set (14) Composed of the organic solids during the wastewater treatment process. Solids screened from raw sewages are typically disposed of here. In aeration basins, these consume small particles of organic matter. When wastewater sits in tanks, allowing solids to sink to the bottom and greases and oils to rise to the surface.
WEBDec 1, 2021 · This review analyzes all the treatment technologies of the typical coal chemical wastewater projects investigated in China based on these three processes. From the evaluation of the advantages and ...
WEBNov 1, 2020 · In the treatment of highsalt wastewater, coal chemical industry projects in China mostly use the "double membrane" reuse technology of "ultrafiltration + reverse osmosis". Reverse osmosis is the core and main technology of reuse treatment, while ultrafiltration is the pretreatment and protection process. Highsalt wastewater refers to ...
WEBMetallurgical process and design. Eoin H. Macdonald, in Handbook of Gold Exploration and Evaluation, 2007 Spiral separators. Spiral separators were originally developed by Humphreys in 1899 for coal treatment processes in the USA and adapted for separating heavy minerals from beach sands. However, their cast iron construction made them .
WEBNov 1, 2017 · An improved phenol and ammonia recovery process that the sour water stripper and the solvent recovery system are thermal integrated is proposed based on the conventional wastewater treatment process. Therein, the ammoniarich gas drawn from the middle of sour water stripper, as a heat source, is exchanged with the reboiler of the .
WEBMay 1, 2022 · In order to solve the problem of mine water treatment in the production process of coal mine enterprises, the source and characteristics of mine water are introduced, and the zero discharge technology of mine water is studied and applied in engineering, the zero discharge technology of mine water includes three stages: .
WEBOct 15, 2016 · The experimental results of this research revealed that CFA could be converted successfully to zeolite NaP by the thermosonochemical treatment at low temperature ( 100 °C) and atmospheric pressure in 4 h. The main synthesized zeolitic phase was NaP zeolite with traces of hydroxysodalite with 1 h conventional heating .
WEBMar 28, 2013 · A high volatile bituminous coal was subjected to a series of organic acid treatment in steps using citric acid (1 hr and 2 hr) and buffered EDTA with acetic acid (1 to 3 hr) at room temperature. Leaching was performed with acetic acid (2N) also for 1 hr. Citric acid procedure reduced the mineral matter below %. Calcites and aluminates are .
WEBFeb 16, 2023 · Mining coal. Coal miners use large machines to remove coal from the earth. Many coal deposits, called coal beds or seams, are near the earth's surface, but others are deep mining methods allow coal miners to easily reach most of the nation's coal reserves and to produce about three times more coal in .
WEBJan 1, 2019 · The wastewater treatment process was firstly developed for Lurgi fixed bed pressurized gasifiion wastewater to deal with the high concentrated phenol and ammonia [22].It is well introduced in Harbin gasifiion plant and Inner Mongolia Tuke coal fertilizer project [13].The phenol and ammonia concentrations are reduced in this process to low .
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