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Zhang C.,China University of Mining and Technology | Wang L.,China University of Mining and Technology | Wang X.,Beijing Sinorichen Environmental Protection Co. | Lu J.,Beijing Sinorichen Environmental Protection Co. | And 7 more authors.
Desalination and Water Treatment | Year: 2015

An odor impact assessment had been carried out in order to evaluate the negative impact on the population living in the neighborhood of Zhengwangfen wastewater treatment plant (WWTP) in Beijing. The results indicated that the discharged NH3 and H2S concentrations were highest in the pretreatment and biological treatment units, while the discharged odor index was highest in the pretreatment, biological, and sludge treatment units in the two existing WWTPs. Using the method of the odor index evaluation for H2S and NH3, we concluded that the maximum concentrations of NH3 and H2S in Zhengwangfen WWTP were 0.0043 and 0.059 mg/m3, respectively. On the basis of Gaussian point source diffusion model, the maximum protective distance of different treatment units was 196.43 m, which indicated that the 200 m setback distance for WWTPs, dictated by local regulation, appeared to be sufficient under usual operating and normal weather conditions. © 2015 Balaban Desalination Publications. All rights reserved.


Zhang C.-H.,China University of Mining and Technology | He X.-W.,China University of Mining and Technology | Zhu S.-Q.,China University of Mining and Technology | Wang X.-C.,Beijing Sinorichen Environmental Protection Ltd Company | Wang H.,Beijing Sinorichen Environmental Protection Ltd Company
Zhongguo Kuangye Daxue Xuebao/Journal of China University of Mining and Technology | Year: 2010

For the reuse of the large amount of lignite-derived water as power plant's circulating cooling water, the quality of lignite-derived water was analyzed based on the lignite sample taken from Baori, Inner Mongolia. The two influence factors of DO and temperature were dynamically simulated through the process of A2/O, the treatment effects of four different diameters lignite (0.50-1.25, 1.25-2.00, 2.00-3.00 mm and mixed size) were tested through the process of UBAF, and the lignite-derived water was treated by the combined process of 'A2/O+UBAF'. After the treatment, the results show that the property parameters of lignite-derived water such as turbidity, BOD5, CODCr, Mn and NH3-N are in breach of the reuse limits for power plant's circulating cooling water, and the quality of lignite-derived water treated by the combined process of 'A2/O+UBAF' can meet the reuse limit for power plant's circulating cooling water in China, which achieves the reuse of water resources.


Zhang C.-H.,China University of Mining and Technology | He X.-W.,China University of Mining and Technology | Wang H.,Beijing Sinorichen Environmental Protection Co. | Zhang X.,Beijing Sinorichen Environmental Protection Co.
Meitan Xuebao/Journal of the China Coal Society | Year: 2010

Using UBAF (Up Biological Aerated Filter) process, the concentration of COD and NH3-N can be up to 99.3~122.3 mg/L and 43.3~52.1 mg/L, and the removal efficiency can be up to 36.7%~48.6% and 21.5%~34.8% respectively. Setting the polar plate's distance at 1 cm, the electrolytic time at 120 min and the cell voltage at 15 V, treated by UBAF & bipolar three-dimensional electrode process, the concentration of COD and NH3-N can be up to 31.3 and 13.7 mg/L, and the removal efficiency can be up to 83.3% and 79.4% respectively. The coking wastewater effluent can meet the Class 1 emission standard of Discharge Standard of Water Pollutants for Iron and Steel Industry in China.


Zhang C.,China University of Mining and Technology | He X.,China University of Mining and Technology | Zhu S.,China University of Mining and Technology | Wang X.,Beijing Sinorichen Environmental Protection Co. | Wang H.,Beijing Sinorichen Environmental Protection Co.
Fresenius Environmental Bulletin | Year: 2010

Hot Press Upgrading (HPU) is a process that is being developed to improve the quality of lignite. A large amount of lignite-derived water is created during the HPU process. This lignite-derived water's parameters such as turbidity, BOD5, CODCr, Mn, NH3-N are higher than those allowed for re-use as circulating cooling water in a power plant. Treated by anaerobic-anoxic-oxic (A2/O) process, the quality of lignite-derived water met the standard for re-use as circulating cooling water in power plants in China. The water reflux ratio from the oxic reactor to the anoxic reactor was set at 3:1 and the sludge reflux ratio from the secondary sedimentation tank to the anaerobic reactor was set at 50%, the denitrification and nitrification dynamic kinetic equations were derived. The NO 3 --N concentration of the effluent of the anoxic unit and the NH3-N concentration of the effluent of the oxic unit were simulated in this paper. © by PSP.


Zhang C.,China University of Mining and Technology | He X.,China University of Mining and Technology | Zhu S.,China University of Mining and Technology | Wang H.,Beijing Sinorichen Environmental Protection Co. | Wang X.,Beijing Sinorichen Environmental Protection Co.
2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 | Year: 2010

The water quality of lignite-derived water produced from Hot Press Upgrading (HPU) is in breach of the reuse standard for power plant's circulating cooling water. This study assesses the water characteristics of lignite-derived water as follows: The BOD5/COD ratio is 0.85. The pH value of lignitederived water samples is from 6.65 to 6.85. The lignite-derived water's properties parameters such as turbidity, BOD5, CODCr Mn and NH3-N are higher than the reuse standard for power plant's circulating cooling water. A combined treatment process, A2/O-UBAF, was developed for remediation of the lignite-derived water in this paper. After the treatment, the lignite-derived water's quality can meet the reuse standard for power plant's circulating cooling water in China. © 2010 IEEE.


Zhang C.,China University of Mining and Technology | He X.,China University of Mining and Technology | Zhu S.,China University of Mining and Technology | Wang X.,Beijing Sinorichen Environmental Protection Co. | Zhuang H.,Beijing Sinorichen Environmental Protection Co.
5th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2011 | Year: 2011

This paper introduces the cleaner production processes of Hot Press Upgrading (HPU). Tail gas and lignite-derived water are created during the HPU process. When treated by the combined process of 'A2/O + Ozone oxidation + UBAF', the quality of the lignite-derived water can meet China's reuse standard for the power plant's circulating cooling water. After separation by the two-stage cyclone separator, a sintered metal powder filter treats the tail gas produced from the HPU process. After the above treatment, the tail gas's removal efficiency exceeds 99.5%. © 2011 IEEE.


Zhang C.,China University of Mining and Technology | He X.,China University of Mining and Technology | Zhu S.,China University of Mining and Technology | Wang X.,Beijing Sinorichen Environmental Protection Co. | Zhuang H.,Beijing Sinorichen Environmental Protection Co.
Asia-Pacific Power and Energy Engineering Conference, APPEEC | Year: 2011

China enjoys rich lignite resources. However, the development and utilization level of lignite in China is low compared with other countries. The lignite in China is distributed mainly in the eastern areas of Inner Mongolia and in the northeast provinces. The characteristics of China's lignite are closely related to its coal-forming age. Due to the shallow buried coal seams, most parts of the lignite coalfields in China use adit or inclined shaft mining. In China, the application of lignite includes combustion for power generation, pyrolysis and coking, liquefaction, gasification and preparation of wax etc.. © 2011 IEEE.


Zhang C.,China University of Mining and Technology | He X.,China University of Mining and Technology | Wang X.,Beijing Sinorichen Environmental Protection Co.
2010 4th International Conference on Bioinformatics and Biomedical Engineering, iCBBE 2010 | Year: 2010

An acetic acid microbial biosensor was developed for environmental monitoring. The microbial biosensor consisted of an immobilized cell membrane and an oxygen electrode. The results showed that the optimum pH of buffer solution was 6.48, the optimum temperature of buffer solution was 33 °C and the optimum concentration of buffer solution was 0.01mol/L for acetic acid's determining. The linear range was found to be from 5.0 to 30 mg/L of acetic acid and the regression equation was y=0.51x+1.66 (correlation coefficient 0.9998). 23 kind of interferential substances, which have the similar chemical characters and molecular weights as acetic acid, were determined in the experiment The biosensor was found to have an extend activity of 90 days with more than 600 determinations. © 2010 IEEE.

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