Advanced treatment of polysilicon production wastewater using the combination of coagulation, expanded granular sludge bed, anaerobic baffled reactor and biological contact oxidation processes

2020 ◽  
Vol 190 ◽  
pp. 89-97
Author(s):  
Xiao-ling Zou
Keyword(s):  
Granular Sludge ◽  
Advanced Treatment ◽  
Anaerobic Baffled Reactor ◽  
Oxidation Processes ◽  
Contact Oxidation ◽  
Biological Contact Oxidation

Application of basalt fibers in a biological contact oxidation reactor for the treatment of landfill leachate

2021 ◽  
Vol 297 ◽  
pp. 126648
Author(s):  
Huicheng Ni ◽  
Muhammad Arslan ◽  
Junchao Qian ◽  
Yaping Wang ◽  
Zhigang Liu ◽  
...  
Keyword(s):  
Landfill Leachate ◽  
Basalt Fibers ◽  
Contact Oxidation ◽  
Oxidation Reactor ◽  
Biological Contact Oxidation

Performance of an anaerobic baffled reactor (ABR) as a hydrolysis-acidogenesis unit in treating landfill leachate mixed with municipal sewage

2000 ◽  
Vol 42 (12) ◽  
pp. 115-121 ◽  
Author(s):  
B. Wang ◽  
Y. Shen
Keyword(s):  
Landfill Leachate ◽  
Loading Rate ◽  
Granular Sludge ◽  
Operational Performance ◽  
Municipal Sewage ◽  
Organic Loading Rate ◽  
Stable Operation ◽  
Organic Loading ◽  
Anaerobic Baffled Reactor ◽  
Biological Treatability

A study on the performance of an Anaerobic Baffled Reactor(ABR) as a hydrolysis-acidogenesis unit in treating the mixed wastewater of landfill leachate and municipal sewage in different volumetric ratios was carried out. The results showed that ABR substantially improved the biological treatability of the mixed wastewater by increasing its BOD5/COD ratio to 0.4–0.6 from the initial values of 0.15–0.3. The formation of bar-shaped granular sludge of 0.5–5 mm both in diameter and length with an SVI of 7.5–14.2 ml/g was observed in all compartments of the ABR when the organic loading rate reached 4.71 kgCOD/m3 · d. The effects of the ratios of NH4+-N/COD and COD/TP in mixed wastewater on the operational performance were also studied, from which it was found that a reasonable NH4+-N/COD ratio should be lower than 0.02, and the phosphorus supplement was needed when the volumetric ratio was higher than 4:6 for stable operation of ABR.

Advanced treatment for impaired water supplies: when advanced oxidation systems are the best option

2011 ◽  
Vol 6 (4) ◽  
Author(s):  
J. Collins ◽  
C. Cotton ◽  
M. MacPhee
Keyword(s):  
Surface Waters ◽  
Advanced Oxidation Processes ◽  
Advanced Oxidation ◽  
Advanced Treatment ◽  
Water Supplies ◽  
Oxidation Processes ◽  
Sustainable Water Supply ◽  
The World ◽  
Quenching Method ◽  
Impaired Water

As drought becomes pervasive around the world, many water suppliers are turning to water supplies once avoided – contaminated surface waters and groundwaters and wastewater. These water supplies are now a valuable part of a sustainable water supply; however, advanced treatment with advanced oxidation processes (AOPs) is typically needed to address trace contaminants in these supplies. This paper will address the following questions: 1) What is the best AOP technology for a given application? 2) Are there oxidation byproducts of concern? 3) What is the best peroxide quenching method? 4) How cost competitive are AOPs?

Engineering Example of High Concentration Printing and Dyeing Wastewater Processed by UBF Craft

2011 ◽  
Vol 255-260 ◽  
pp. 2736-2739
Author(s):  
Shi Yuan Huang ◽  
Qiang Huang ◽  
Sheng Bing Chen ◽  
Yuan Yuan Gao
Keyword(s):  
Toxic Substances ◽  
Wastewater Discharge ◽  
Effluent Water ◽  
Dyeing Wastewater ◽  
High Concentration ◽  
Printing And Dyeing Wastewater ◽  
Contact Oxidation ◽  
Grade One ◽  
Biological Contact Oxidation ◽  
Large Flow

The multi-methods of UBF-biological contact oxidation - enhanced coagulation- precipitation - fiber sand filtration has been applied to treatment a dyeing and printing wastewater, because it is with the characteristics of large flow, high CODcr, high chromaticity and toxic substances. The result showed: when the feed wate under the conditions of CODcr, BOD5, SS quality concentrations were 15000mg / L, 250mg / L,> 800mg / L and chromaticity blow 1000 times, effluent water quality can meet grade one of the national integrated wastewater discharge standards (GB8978-1996).

scholarly journals A HYBRID MADM ANALYSIS IN EVALUATING PROCESS OF CHEMICAL WASTEWATER PURIFICATION REGARDING TO ADVANCE OXIDATION PROCESSES

2017 ◽  
Vol 25 (3) ◽  
pp. 277-288 ◽  
Author(s):  
Mohamad Reza KHODADADI ◽  
Sarfaraz HASHEMKHANI ZOLFANI ◽  
Morteza YAZDANI ◽  
Edmundas Kazimieras ZAVADSKAS
Keyword(s):  
Emerging Contaminants ◽  
Multiple Criteria Decision Making ◽  
Real Data ◽  
Advanced Treatment ◽  
Processing Plant ◽  
Wastewater Purification ◽  
Industrial Processing ◽  
Oxidation Processes ◽  
Photo Catalysis ◽  
Industrial Sources

Organic components, widely spread in water by industrial sources become emerging Contaminants in the water. Due deficient removal in conventional wastewater treatments, advanced treatment should be considered for industrial wastewaters removing. Advance oxidation processes (aops) can be used as an effective subset of chemical treatment for degradation of toxic from water in industrial processing plant. Two Multiple Criteria Decision Making (MCDM) methods based on hybrid SWARA-WASPAS are organized to investigate efficiency of different sort of aops: ozonation, fenton, electrochemical Oxidation, UV/Photo-catalysis, UV/H2O2. Based on MCDM, Fenton is the most possible aops for application in wastewater treatment areas. In this study, SWARA is deployed in evaluating criteria that were identified in literature review, and WASPAS is used for evaluating and ranking the methods. The main point of this study is based on real data.

Pretreatment of Micro-Polluted Raw Water by Parallel Process of Photocatalysis-Biological Contact Oxidation

2011 ◽  
Vol 374-377 ◽  
pp. 851-854
Author(s):  
Ying Qing Guo ◽  
Chun Sheng Lei ◽  
Er Deng Du
Keyword(s):  
Removal Efficiency ◽  
Ph Value ◽  
Reference Value ◽  
Parallel Process ◽  
Biological Oxidation ◽  
Raw Water ◽  
Practical Engineering ◽  
Contact Oxidation ◽  
Biological Contact Oxidation ◽  
Engineering Projects

By using parallel process of photocatalysis-biological contact oxidation, a research on the pretreatment effect of micro-polluted raw water was conducted. The result indicates that the changes of HRT and the initial concentration take significant impact on the removal of NH3-N. 60min is the best residence time for the pretreatment. Once the thickness of composite media is 120mm, the removal efficiency of CODMn may reach as much as 15.55%, while the average removal efficiency of turbidity is 20%. Since the nitration reaction consumes certain amount of alkalinity, the pH value of outlet water is lower than inlet water. When employing parallel process, biological oxidation and photocatalysis are performed and finished in the same reactor simultaneously, conducing to maintaining a moderate level of the removal of CODMn and NH3-N. All these are of reference value for its application in practical engineering projects.

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