China Bluestar Lehigh Engineering Corporation

Xinpu, China

China Bluestar Lehigh Engineering Corporation

Xinpu, China
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Xu Z.,China Bluestar Lehigh Engineering Corporation
Chinese Journal of Environmental Engineering | Year: 2013

Effects of glucose and sodium acetate as carbon source on nitrogen and phosphorus removal efficiency were researched for CMICAO process. The influence of water distribution with different carbon/nitrogen (C/N) ratios on the system performances was investigated. Higher nitrogen and phosphorus removal efficiency was achieved when sodium acetate was as carbon source instead of glucose. When using glucose as carbon source and COD was 200 mg/L, C/N ratio was 5 and water distribution of anoxic tank and anaerobic tank was 1:2, effluent concentrations of COD, TN, NH4 +-N and TP were 28.5, 10.8, 2.1 and 0.5 mg/L, respectively, meeting the Grade A Standard. When using glucose as carbon source, C/N ratio should be controlled between 5~7.5 and water distribution of anoxic tank and anaerobic tank can be kept at 1:1.


Yang H.,University of Science and Technology Beijing | Hu N.L.,University of Science and Technology Beijing | Xu Z.,China Bluestar Lehigh Engineering Corporation | Chen L.,JCHX mining management Co.
Applied Mechanics and Materials | Year: 2013

This paper introduces a new technology using a new mathematics model to solve the blending problem of two or more kinds of minerals, which grades are very different even in orders of magnitude, and creates a blending system which can produce an optimal program of blending automatically using a feedback process based on Surpac, a mining software, and achieves a real time truck dispatching system finally. All of above can improve quality and quantity of the minerals blending stably, that has been proved in practice. According 2001's record, the average amplitude of Cu grade was reduced from 10.54% to 3.72% and the average amplitude of Mo grade was reduced from 6.49% to 3.11% after this system worked. © (2013) Trans Tech Publications, Switzerland.


Jie C.,China University of Mining and Technology | Sheng-guo J.,China University of Mining and Technology | Wen-bing X.,China University of Mining and Technology | Xiaobao F.,China BlueStar Lehigh Engineering Corporation
Electronic Journal of Geotechnical Engineering | Year: 2014

Chamber group in 42 mining district of Peigou mine was studied with the methods of numerical simulation and field test, to acquire the characteristics and control countermeasures of stability of the chambers. Geological radar and drilling peep instrument were used to test and judge the loosen zone of chambers surrounding rock, and software UDEC was used to analyze the utilizing range of grouting and grout diffusion under different water cement ratio and injection pressure. According to the lithological characteristics of chambers, the first support scheme of u-steel support backwall grouting was put forward. The industrial result showed that chamber group was effectively maintained after adopting rational support scheme. © 2014 ejge.


Zhang P.,Florida Industrial and Phosphate Research Institute | Zheng S.,China Bluestar Lehigh Engineering Corporation | Sun W.,China Bluestar Lehigh Engineering Corporation | Ma X.,China Bluestar Lehigh Engineering Corporation | Miller J.,University of Utah
2014 SME Annual Meeting and Exhibit, SME 2014: Leadership in Uncertain Times | Year: 2014

A 1989 FIPR characterization study of the future phosphate resources in Florida showed that MgO would be a problem with both the pebble and concentrate as phosphate mining moves deeper. Since the ratio of concentrate to pebble will become higher and higher In the future, reducing Mg content in the concentrate by a small margin would allow blending of a large portion of the high-dolomite pebble. This research was conducted based on that logic. The following six approaches were tested for reducing MgO content in the flotation concentrate: (1) Adding a dolomite depressant in the rougher flotation step; (2) Dolomite flotation on the rougher concentrate with and without grinding; (3) Dolomite flotation on the cleaner concentrate with and without grinding; (4) Scrubbing the flotation feed; (5) Scrubbing the rougher concentrate; (6) Scrubbing the cleane r concentrate. Successful methods Include adding a dolomite depressant in the rougher flotation, olomite flotation on the cleaner concentrate with grinding, and scrubbing the cleaner concentrate in quartz sand. These techniques could reduce MgO content in the final concentrate by 20-40%. The flotation process could achieve a concentrate with the lowest MgO content, but it is the most expensive approach. Adding a dolomite is inexpensive and easy, but the effect is limited. Overall, scrubbing may be the most promising technology for this purpose.


Hu M.,Nanjing University | Li J.,Nanjing University | Zhang B.,Jiangsu Provincial Environmental Monitoring Center | Cui Q.,China Bluestar Lehigh Engineering Corporation | And 2 more authors.
Marine Pollution Bulletin | Year: 2014

Thirteen samples of seawater were collected from Yellow Sea and East China Sea near Qingdao, Lianyungang, and Xiamen, China. They were analyzed for halogenated organophosphorus flame retardants (OPFRs). The compounds selected for detection were Tris(2-chloroethyl) phosphate (TCEP), Tris(2-chloroisopropyl) phosphate (TCPP), Tris (1,3-dichloro-2-propyl) phosphate (TDCPP), and Tris(2,3-dibromopropyl) phosphate (TDBPP). The total concentrations ranged from 91.87 to 1392. ng/L and the mean concentrations of these four chemicals were 134.44, 84.12, 109.28, and 96.70. ng/L, respectively. TCEP exhibited the highest concentrations, although concentrations of TCPP and TDCPP were also fairly high in Lianyungang and Xiamen. Generally, Lianyungang was the most heavily polluted district, with very high concentrations of TCEP at LYG-2 (550.54. ng/L) and LYG-4 (617.92. ng/L). The main sources of halogenated OPFRs were municipal and industrial effluents of wastewater treatment plants in the nearby economic and industrial zones. © 2014 Elsevier Ltd.


PubMed | China Bluestar Lehigh Engineering Corporation, Jiangsu Provincial Environmental Monitoring Center and Nanjing University
Type: Journal Article | Journal: Marine pollution bulletin | Year: 2014

Thirteen samples of seawater were collected from Yellow Sea and East China Sea near Qingdao, Lianyungang, and Xiamen, China. They were analyzed for halogenated organophosphorus flame retardants (OPFRs). The compounds selected for detection were Tris(2-chloroethyl) phosphate (TCEP), Tris(2-chloroisopropyl) phosphate (TCPP), Tris (1,3-dichloro-2-propyl) phosphate (TDCPP), and Tris(2,3-dibromopropyl) phosphate (TDBPP). The total concentrations ranged from 91.87 to 1392 ng/L and the mean concentrations of these four chemicals were 134.44, 84.12, 109.28, and 96.70 ng/L, respectively. TCEP exhibited the highest concentrations, although concentrations of TCPP and TDCPP were also fairly high in Lianyungang and Xiamen. Generally, Lianyungang was the most heavily polluted district, with very high concentrations of TCEP at LYG-2 (550.54 ng/L) and LYG-4 (617.92 ng/L). The main sources of halogenated OPFRs were municipal and industrial effluents of wastewater treatment plants in the nearby economic and industrial zones.


Zhang B.-B.,China Bluestar Lehigh Engineering Corporation | Guo Z.-T.,China Bluestar Lehigh Engineering Corporation | Yang Z.-L.,China Bluestar Lehigh Engineering Corporation | Shen Y.-X.,China Bluestar Lehigh Engineering Corporation | And 2 more authors.
Petrochemical Equipment | Year: 2015

The blower is the important equipment of aeration system in sewage plant. The structure and technical characteristics of TURBOMMAX air suspending centrifugal blower were simply introduced. Compared to the traditional roots blower, it had the advantages of high efficiency, reliable operation, low noise, without auxiliary system, small occupation of land, and small maintenance workload. Based on the practical construction, the application prospect of air suspending centrifugal blower was discussed in plateau wastewater treatment plants. © 2015, Lanzhou Petroleum Machinery Research Institute. All rights reserved.


Zhang P.,Florida Industrial and Phosphate Research Institute | Snow R.,Florida Industrial and Phosphate Research Institute | Song W.,China Bluestar Lehigh Engineering Corporation | Ma X.,China Bluestar Lehigh Engineering Corporation | Zheng S.,China Bluestar Lehigh Engineering Corporation
IMPC 2014 - 27th International Mineral Processing Congress | Year: 2014

Numerous phosphate mineral depressants have been reported in the literature for use during anionic flotation of dolomite from carbonate fluorapatite in slightly acid circuits. In one part of this research, laboratory flotation experiments were conducted to compare the effectiveness of phosphate depressants to process ground, deslimed high-MgO Florida phosphate pebbles. Ten potential phosphate depressants were evaluated during laboratory anionic flotation of dolomite from phosphate in a slightly acid circuit using a sulfonated oleic acid soap plus oil as the dolomite collector. Eight of the depressants have been used by various investigators with foreign and domestic carbonate-phosphate ores. Four of the depressants were found to be reasonably effective during the current flotation study, namely: sodium tripolyphosphate (STPP), sodium hexametaphosphate (SHMP), tetrasodium pyrophosphate (TSPP) and diphosphonic acid (DPA). Without depressants, the sulfonate collector required to produce cell underflow phosphate products containing <0.80% MgO and MgO/P2O5 ratio <.033 was 1.13 kg/ton of flotation feed at a flotation pH range = 5.5-6.0. Using this collector level with 0.91-1.36 kg/ton of feed of STPP, SHMP or TSPP yielded phosphate products analyzing 0.73-0.92% MgO and MgO/P2O5 ratios =.027-.034 at 90.0-96.8% P2O5 recovery. Similar grade phosphate products were obtained using DPA as the phosphate depressant at 84.1-87.5% P2O5 recovery. When no depressant was used, a similar grade phosphate product was obtained at only 65.9% P2O5 recovery. Another part of the research aimed at reducing MgO content in the final concentrate from Florida phosphate plants by conducting dolomite flotation on the final concentrate. Numerous phosphate depressants were tested for this purpose, including acidic, neutral and alkaline reagents. The most effective phosphate depressant was found to be phosphoric acid, giving both high grade and recovery.


Zhang B.,China Bluestar Lehigh Engineering Corporation | Tian F.,China Bluestar Lehigh Engineering Corporation | Yang Z.,China Bluestar Lehigh Engineering Corporation | Wang K.,China Bluestar Lehigh Engineering Corporation | Liu J.,China Bluestar Lehigh Engineering Corporation
Chinese Journal of Environmental Engineering | Year: 2014

The nitrification performances in the salt-tolerant denitrifying sludge were studied at different concentrations of sodium chloride using sequencing batch reactor (SBR). The inhibition and recovery of AOB and NOB were investigated under the temporary shock loads of salt on the nitrification process. The results showed that AOB was almost not affected and NOB was influenced slightly at the saline content of 0~50 g/L; AOB was influenced mildly and NOB was inhibited to a certain degree at 60 g/L, while they were both severely inhibited at 70 g/L. The salt-tolerant denitrifying sludge was able to adapt the temporary shock loads of 50 g/L salinity. It was beneficial to the recovery of both AOB and NOB in low salinity. The “poisoning” phenomenon occurred in the system when the temporary shock loads was 60 g/L. AOB and NOB were both recovered to a different degree when the salinity decreased to 0 g/L.


Zhang B.,China Bluestar Lehigh Engineering Corporation | Tian F.,China Bluestar Lehigh Engineering Corporation | Yang Z.,China Bluestar Lehigh Engineering Corporation | Wang K.,China Bluestar Lehigh Engineering Corporation | Hu C.,China Bluestar Lehigh Engineering Corporation
Chinese Journal of Environmental Engineering | Year: 2014

The sedimentation performances of salt-tolerant denitrifying sludge at the stage of bulking were studied in a 2 L SBR reactor and 240 L reactor(labeled as 1# and 2#), respectively. Both the reactors were operated under the following conditions: the influent NH3-N concentration of 40~100 mg/L, pH of 7.45~8.0, DO of 3~5 mg/L and the temperature of 28~30°C. The effect of the different salinities (0 g/L, 10 g/L, 20 g/L, 30 g/L) on the precipitation performance of the sludge was investigated. The results showed that the salinity significantly improved the sedimentation ability of sludge. With the increase of the salinity, the volume of the zoogloea reduced and the quantity of filamentous bacteria and protozoa in the sludge obviously decreased. As a result the sedimentation ability of the sludge was improved. When the salinity reached 30 g/L, the SV30 decreased from 95% and 80% to 53% and 30%, respectively for the 1# and 2# SBR reactor, and the SVI value decreased from 185.5 and 170.8 mL/g to 127.3 and 78.4 mL/g, respectively.

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