Recent Patents on Immobilized Microorganism Technology and Its Engineering Application in Wastewater Treatment

2008 ◽  
Vol 2 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Taicheng An ◽  
Lincheng Zhou ◽  
Guiying Li ◽  
Jiamo Fu ◽  
Guoying Sheng
Keyword(s):  
Wastewater Treatment ◽  
Engineering Application ◽  
Immobilized Microorganism

Application of Biotechnology to Municipal Wastewater Treatment

1991 ◽  
Vol 23 (10-12) ◽  
pp. 1723-1732 ◽  
Author(s):  
T. Matsui ◽  
S. Kyosai ◽  
M. Takahashi
Keyword(s):  
Wastewater Treatment ◽  
Genetic Engineering ◽  
Municipal Wastewater ◽  
Engineering Application ◽  
Municipal Wastewater Treatment ◽  
Sludge Treatment ◽  
National Project ◽  
Wastewater Treatment Systems ◽  
Raw Wastewater

Application of biotechnology to wastewater treatment for its improvement and greater understanding was investigated in the Japanese national project named Biofocus WT as to a microorganism bank, genetic engineering application, immobilization of microorganisms, bioreactors for wastewater treatment, bioreactors for sludge treatment, SS separators for raw wastewater, biosensors and new wastewater treatment systems.

Immobilized Microorganism Technology and the Application of Wastewater Treatment

2014 ◽  
Vol 955-959 ◽  
pp. 383-386 ◽  
Author(s):  
Ming Zhong Hu ◽  
Ya Nan Tang ◽  
Xiao Yu Wang
Keyword(s):  
Wastewater Treatment ◽  
Ammonia Nitrogen ◽  
Engineering Practice ◽  
Oily Wastewater ◽  
Dyeing Wastewater ◽  
Treatment Progress ◽  
Printing And Dyeing Wastewater ◽  
Heavy Metal Wastewater ◽  
Immobilization Technology ◽  
Immobilized Microorganism

The paper mainly summarizes the method of immobilized microorganism£¬selection the carrier, and application of immobilization technology and wastewater treatment progress. Ammonia-nitrogen wastewater and refractory organic wastewater, heavy metal wastewater, printing and dyeing wastewater, oily wastewater and several kinds of wastewater treatment of immobilized are introduced respectively. And points out what the problem should be solved that applied the laboratory application to the real engineering practice.

scholarly journals Microalgal-Bacterial Granular Sludge Process in Non-Aerated Municipal Wastewater Treatment under Natural Day-Night Conditions: Performance and Microbial Community

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1479
Author(s):  
Shulian Wang ◽  
Lin Zhu ◽  
Bin Ji ◽  
Huan Hou ◽  
Yingqun Ma
Keyword(s):  
Wastewater Treatment ◽  
Relative Abundance ◽  
Municipal Wastewater ◽  
Engineering Application ◽  
Granular Sludge ◽  
System Stability ◽  
Municipal Wastewater Treatment ◽  
Treatment Technology ◽  
Filamentous Microorganisms ◽  
Removal Efficiencies

The microalgal-bacterial granular sludge (MBGS) process is expected to meet the future requirements of municipal wastewater treatment technology for decontamination, energy consumption, carbon emission and resource recovery. However, little research on the performance of the MBGS process in outdoor treatment was reported. This study investigated the performance of the MBGS system in treating municipal wastewater under natural alternate day and night conditions in late autumn. The results showed that the average removal efficiencies of Chemical oxygen demand (COD), NH4+-N and PO43−-P on daytime before cooling (stage I, day 1−4) could reach 59.9% ± 6.8%, 78.1% ± 7.9% and 61.5% ± 4.5%, respectively, while the corresponding average removal efficiencies at night were 47.6% ± 8.0%, 56.5% ± 17.9% and 74.2% ± 7.6%, respectively. Due to the dramatic changes in environmental temperature and light intensity, the microbial biomass and system stability was affected with fluctuation in COD and PO43−-P removal. In addition, the relative abundance of filamentous microorganisms (i.e., Clostridia and Anaerolineae) decreased, while Chlorella maintained a dominant position in the eukaryotic community (i.e., relative abundance > 99%). This study can provide a theoretical basis and technical support for the further engineering application of the MBGS process.

Study on Acephate Wastewater Treatment with Immobilized Microorganism

2013 ◽  
Vol 838-841 ◽  
pp. 2383-2386
Author(s):  
Shu Yan Zang ◽  
Li Li Yin ◽  
Yuan Ma ◽  
Ting Ting Wang
Keyword(s):  
Wastewater Treatment ◽  
Aspergillus Niger ◽  
Physical Properties ◽  
Microbial Activity ◽  
Sodium Alginate ◽  
Embedding Capacity ◽  
Preparation Conditions ◽  
Alginate Concentration ◽  
Major Factors ◽  
Immobilized Microorganism

Alginate-diatomite immobilized microspheres were prepared through immobilized biosorption of diatomite and Aspergillus niger by sodium alginate. Three major factors such as alginate concentration, diatomite content and embedding capacity on physical properties and microbial activity of Alginate-diatomite immobilized microspheres were investigated, and the optimal preparation conditions of Alginate-diatomite immobilized microspheres were determined as 2% of alginate, 1% of diatomite, 10% of Embedding capacity. Keywords: Embedded immobilization;Degradation; Acephate; Alginate; Aspergillus niger

Nutrient removal and recovery from nitrogen- and phosphorus-laden waste streams in the form of struvite

2011 ◽  
Vol 6 (4) ◽  
Author(s):  
Q.L. Zhao ◽  
J. Ding
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Engineering Application ◽  
Organic Load ◽  
Waste Streams ◽  
Nitrogen And Phosphorus ◽  
Operational Conditions ◽  
Software Model ◽  
Efficient Recovery ◽  
Removal And Recovery

For the purpose of waste conversion into resources, removal and recovery of nutrients from different scenarios of nitrogen- and phosphorus-laden waste streams in the form of struvite (MgNH4PO4 6H2O, MAP) were presented in this paper. Nutrients-laden waste streams included urine, landfill leachate, industrial wastewater and the side streams in wastewater treatment plants etc. Batch experiments and software model were applied to obtain the optimal operational conditions. Several kinds of struvite reactors were introduced and compared. Under the optimal conditions, the recovery efficiency of NH4+-N and PO43–-P from urine separation could reach above 95% and 85%, respectively, while highly efficient recovery of nutrients was also realized for other kinds of wastewater. Some engineering examples on struvite crystallization were also discussed, indicating a feasible process for engineering application. Furthermore, the struvite recovered could not only be reused as a fertilizer, but also significantly reduce the organic load of wastewater treatment plants and improve effluent quality.

Strength Analysis of the Submersible Mixer

2012 ◽  
Vol 197 ◽  
pp. 18-23 ◽  
Author(s):  
Wei Dong Shi ◽  
Fei Tian ◽  
Xi Ning Lu ◽  
Yi Gao ◽  
Ming Xiong Ou
Keyword(s):  
Wastewater Treatment ◽  
Large Scale ◽  
Unstructured Grid ◽  
Three Dimensional ◽  
Engineering Application ◽  
Rotor System ◽  
Strength Analysis ◽  
Turbulent Model ◽  
Three Dimensional Model ◽  
Rotating Speed

Pro/E software was utilized to build the three-dimensional model. Then, the large-scale computational fluid dynamics software ICEM software was used to build unstructured grid of wastewater treatment pool. Based on the CFX software，the wastewater treatment pool was numerically simulated by dynamic coordinate system technology and RNG k-ε turbulent model and PIOS algorithm, and fluid flew in the wastewater treatment pool was analyzed. Considering motor rotor system participates as part of the rotor system in calculation, rotor system of submersible mixer was strength analysis and modal analysis based on fluid-solid coupling. The results show that: the fluid in wastewater treatment pool can be propelled by the submersible mixer, and diffuses along the radial. The rotating speed of the submersible mixer is far smaller than critical speed, so the rotating speed is safe and reliable. This methold has certain significance. It can guide submersible mixer hydraulic performance in design, simulation and Engineering application.

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