New Process Design Procedure for Dealing with Variable Trickling Filter Effluent Suspended Solids

2006 ◽  
Vol 132 (7) ◽  
pp. 758-763
Author(s):  
D. S. Parker ◽  
J. A. Newman
Keyword(s):  
Process Design ◽  
Suspended Solids ◽  
Design Procedure ◽  
Trickling Filter ◽  
New Process

scholarly journals Part-optimized forming by spatially distributed vaporizing foil actuators

2021 ◽  
Author(s):  
Marlon Hahn ◽  
A. Erman Tekkaya
Keyword(s):  
Process Design ◽  
High Speed ◽  
Specific Impulse ◽  
Design Procedure ◽  
Mathematical Optimization ◽  
Starting Point ◽  
Spatially Distributed ◽  
Lower Tool ◽  
A Minor ◽  
Charging Energy

AbstractElectrically vaporizing foil actuators are employed as an innovative high speed sheet metal forming technology, which has the potential to lower tool costs. To reduce experimental try-outs, a predictive physics-based process design procedure is developed for the first time. It consists of a mathematical optimization utilizing numerical forming simulations followed by analytical computations for the forming-impulse generation through the rapid Joule heating of the foils. The proposed method is demonstrated for an exemplary steel sheet part. The resulting process design provides a part-specific impulse distribution, corresponding parallel actuator geometries, and the pulse generator’s charging energy, so that all process parameters are available before the first experiment. The experimental validation is then performed for the example part. Formed parts indicate that the introduced method yields a good starting point for actual testing, as it only requires adjustments in the form of a minor charging energy augmentation. This was expectable due to the conservative nature of the underlying modeling. The part geometry obtained with the most suitable charging energy is finally compared to the target geometry.

INTEGRATING DATA MINING TO A PROCESS DESIGN USING THE ROBUST BAYESIAN APPROACH

2008 ◽  
Vol 15 (05) ◽  
pp. 441-464 ◽  
Author(s):  
HEAJIN JEONG ◽  
SUHILL SONG ◽  
SANGMUN SHIN ◽  
BYUNG RAE CHO
Keyword(s):  
Data Mining ◽  
Process Design ◽  
Research Work ◽  
Design Procedure ◽  
Design Tool ◽  
Raw Data ◽  
Correlation Based Feature Selection ◽  
Vital Component ◽  
Process Database ◽  
Noise Factors

Although process design optimization issues have received considerable attention from researchers for more than several decades, and a number of methodologies for modeling and optimizing the process have been developed, there is still ample room for improvement. Most research work has rarely considered the use of raw data from a manufacturing process database into the process design. However, the use of cumulative raw data can be a vital component in optimizing processes. To address this, we propose a new process design procedure called robust-Bayesian data mining (RBDM). First, we show how data mining techniques and a correlation-based feature selection (CBFS) method can be applied effectively to the selection of significant factors. Second, we then show how RBDM can be incorporated into robust design. Third, we present how the proposed RBDM estimates process parameters by considering the concept of robustness of the estimated parameters while incorporating the concept of noise factors. Finally, we present numerical examples to illustrate the efficiency of the proposed RBDM as a design tool for optimizing manufacturing processes.

Linking Natural Modeling to Techno-centric Modeling for the Active Involvement of Process Participants in Business Process Design

2016 ◽  
Vol 7 (2) ◽  
pp. 1-30 ◽  
Author(s):  
Stefan Oppl ◽  
Nancy Alexopoulou
Keyword(s):  
Business Process ◽  
Process Modeling ◽  
Process Design ◽  
Design Procedure ◽  
Design Approach ◽  
Efficient Design ◽  
Business Process Design ◽  
Formal Process ◽  
Accurate Representation ◽  
Active Involvement

Actively involving participants in business process modeling enables integration between elicitation and modeling steps of the BPM lifecycle. Such integration may lead to a more efficient design procedure and ultimately to a more accurate representation of the business process. However, active involvement of process participants creates several challenges, as the latter are not expected to have modeling skills. The purpose of this paper is to present a business process design approach, called CoMPArE /WP, which tightly integrates the elicitation and modeling stages of process design, through the active involvement of process participants. To achieve effective involvement of process participants, CoMPArE/WP adopts the principles of natural modeling. However, being a business process design approach aiming at supporting the whole BPM lifecycle, CoMPArE /WP deals also with the transition of natural modeling to formal process representations that can be enacted using a BPMS.

Study on Process Decision Methodology for Sheet Metal Stamping by Case Based Technology

2004 ◽  
Vol 471-472 ◽  
pp. 895-899 ◽  
Author(s):  
W. Liu ◽  
Yu Ying Yang ◽  
Z.W. Xing
Keyword(s):  
Sheet Metal ◽  
Process Design ◽  
Design Procedure ◽  
Practical Experience ◽  
Lead Times ◽  
Prototype System ◽  
Sheet Metal Stamping ◽  
Metal Stamping ◽  
Database Technology ◽  
Previous Design

More powerful process design methods and tools of sheet metal stamping are needed to help engineers design better products, to reduce lead times and costs, and to increase product performance and accuracy. A novel model for representation of object-oriented case information constitution relationship is presented, ‘Class-Property’ structure is proposed in order to refine the case representation, multi-types, properties are adopt to describe more detailed information, three hierarchies of index strategy are used to realize case extraction. Furthermore, experts’ knowledge and experience on previous design cases and forming problems are collected, which can provide designers useful practical experience and data to aid design procedure and to solve the potential problems of sheet metal stamping. In order to illustrate these applications, database technology is used to realize a prototype system of auto body panels, which can be used to integrate process design information and manufacture resources.

New Process Design for Biological Nutrient Removal

1992 ◽  
Vol 25 (4-5) ◽  
pp. 445-448 ◽  
Author(s):  
J. Wanner ◽  
J. S. Čech ◽  
M. Kos
Keyword(s):  
Activated Sludge ◽  
Process Design ◽  
Laboratory Experiments ◽  
Biological Process ◽  
Biological Nutrient Removal ◽  
Organic Substances ◽  
Anaerobic Reactor ◽  
New Process ◽  
Denitrification Reactor ◽  
P Removal

A new arrangement of the biological process for efficient COD, N and P removal has been proposed. The process consists of the anaerobic reactor where organic substances from waste water are sequestered into activated sludge, the nitrification reactor where ammonia-rich supernatant is oxidized, and the denitrification reactor where oxidized supernatant is mixed with the activated sludge separated from the anaerobic reactor. Laboratory experiments confirmed favorable characteristics of the proposed system.

scholarly journals Microwave-Assisted Techniques (MATs); a Quick Way to Extract a Fragrance: A Review

2013 ◽  
Vol 8 (10) ◽  
pp. 1934578X1300801 ◽  
Author(s):  
Antonios K. Kokolakis ◽  
Spyridon K. Golfinopoulos
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Process Design ◽  
Chromatographic Analysis ◽  
Plant Material ◽  
Antioxidant Properties ◽  
Product Yield ◽  
Heating Source ◽  
Microwave Assisted ◽  
New Process

In recent years Microwave-Assisted Techniques (MATs) have been introduced as a new process design and operation for essential oils extraction, representing a viable alternative to conventional old-type methods of distillation which are routinely used for the isolation of essential oils from herbs, flowers and spices prior to gas chromatographic analysis. The novelty of the technique lies in a microwave heating source generating a mixture of boiling solvent with the raw plant material settled above (or drenched inside). Several variations of distillation techniques are evaluated in terms of substantial energy saving, rapidity, product yield, cleanliness and product quality. Results confirm the effectiveness of MATs, which allow extraction of essential oils in shorter extraction time (up-to 9 times faster), using “greener” procedures and provide a higher quality essential oil with better sensory and antioxidant properties.

Treatment of Log Yard Runoff in an Aerobic Trickling Filter

2004 ◽  
Vol 39 (3) ◽  
pp. 230-236 ◽  
Author(s):  
Christine Woodhouse ◽  
Sheldon J.B. Duff
Keyword(s):  
Microbial Growth ◽  
Suspended Solids ◽  
Woody Debris ◽  
Oxygen Demand ◽  
Total Suspended Solids ◽  
Complete Removal ◽  
Trickling Filter ◽  
Microtox Assay ◽  
Processing And Storage ◽  
And Storage

Abstract Contaminated stormwater runoff from log yards is generated when precipitation comes into contact with wood, woody debris and equipment at outdoor wood sorting, processing and storage facilities. Nine runoff samples collected at a sawmill had biochemical oxygen demand (BOD), chemical oxygen demand (COD), tannins and lignin (T+L), and total suspended solids (TSS) levels ranging from 25 to 745 mg/L, 125 to 4610 mg/L, 10 to 1505 mg/L, and 65 to 2205 mg/L, respectively. Six samples were acutely toxic (EC50 <100%) based on the Microtox assay. The samples were effectively treated using a laboratory-scale, attached microbial growth reactor. Treatment for 24 hours at 34°C resulted in substantial reductions in BOD (94–100%), COD (86–93%) and T+L (91–97%). Near complete removal of acute toxicity and colour were also observed. Twenty-four-hour treatment at lower temperatures, 24 and 5 C, reduced BOD concentrations by 97 and 76%, COD by 91 and 64%, and T+L by 95 and 67%, respectively.

scholarly journals Development and adoption of wastewater treatment system for peri-urban agriculture in Multan, Pakistan

2019 ◽  
Vol 80 (8) ◽  
pp. 1524-1537
Author(s):  
Rana Muhammad Asif Kanwar ◽  
Zahid Mahmood Khan ◽  
Hafiz Umar Farid
Keyword(s):  
Wastewater Treatment ◽  
Urban Agriculture ◽  
Biological Treatment ◽  
Suspended Solids ◽  
Linear Regression Analysis ◽  
Oxygen Demand ◽  
Trickling Filter ◽  
Design Procedures ◽  
Major Process ◽  
Kjeldahl Nitrogen

Abstract The present research was conducted to assess the feasibility of biological treatment of a typical wastewater (WW) stream in Multan, Pakistan, using daily trends of WW characteristics and to design a wastewater treatment (WWT) system for that stream. The pH (5.8–6.2), temperature (24–30 °C), biological oxygen demand (BOD5: 128–265 mg/L), ultimate BOD (BODu: 227–438 mg/L), BOD/total Kjeldahl nitrogen (BOD5/TKN:5.9–11.2), BODu/BOD5 (1.6–2.0), carbonaceous BODu/nitrogenous BODu (CBODu/NBODu:1.6–2.8) of the WW was found to support the biological WWT. The inclusion of NBOD also indicated the need for nitrification-denitrification. The linear regression analysis of volatile suspended solids (VSS) with total suspended solids (TSS) indicated the high content of organic solids, which also made the WW suitable for biological treatment. The BOD/COD (chemical oxygen demand) <0.8 indicated the requirement for biomass acclimation. The major process units of the WWT system developed included a primary clarifier, cascade aeration, trickling filter, adsorption filter and chlorination contact tank. During the validation of design procedures, considerable removal of TSS (91%), TDS (46%), BOD5 (88%), COD (87%) was observed over the 15 week operational period of the secondary WWT system. The WWT system developed was appropriate as a sustainable WWT system that consumed less energy and had lower operational costs.

Sign in / Sign up

Export Citation Format

Share Document