A systematic approach for design of distributed wastewater treatment systems.

Sistematski pristup projektovanju distribuiranih sistema za prečišćavanje otpadnih voda. (Bosnian)

Due to increasingly strict environmental regulations, the cost of handling various waste streams is gradually rising. Therefore, it is crucial to minimize unnecessary stream merging when designing distributed wastewater treatment systems, to reduce the overall treatment flow rate whenever possible. In a distributed wastewater treatment system, the wastewater streams are separated for treatment and only combined when necessary. This results in a significant reduction in the total treatment flow rate compared to traditional centralized treatment systems where all the streams are merged before treatment. Design of a distributed wastewater treatment system can be accomplished using pinch analysis and mathematical programming approaches. This paper suggests a straightforward approach for designing such networks, with the following steps in the design process: First, the primary function of each treatment unit is determined. Next, using the pinch method, the lowest treatment quantity is determined for the primary pollutant for each unit. Finally, a three-unit group is selected, with the pinch stream partially treated, the streams above the pinch completely treated, and the stream below the pinch completely bypassed. Two literature case studies demonstrate the viability and effectiveness of this strategy. [ABSTRACT FROM AUTHOR]

Zbog sve strožije regulative u zaštiti životne sredine, troškovi rukovanja različitim tokovima otpada postepeno rastu. Zbog toga je ključno minimizirati nepotrebno spajanje tokova prilikom projektovanja distribuiranih sistema za prečišćavanje otpadnih voda, kako bi se smanjio ukupni protok tretiranih voda kad god je to moguće. U distribuiranom sistemu za prečišćavanje otpadnih voda, tokovi otpadnih voda se odvajaju za tretman i kombinuju samo kada je to potrebno. Ovo rezultira značajnim smanjenjem ukupnog protoka u poređenju sa tradicionalnim centralizovanim sistemima za tretman gde se svi tokovi spajaju pre tretmana. Dizajn distribuiranog sistema za prečišćavanje otpadnih voda može se postići korišćenjem pinč (engleski pinch) analize i pristupa matematičkog programiranja. Ovaj rad predlaže jednostavan pristup za projektovanje takvih mreža, sa više koraka u procesu projektovanja: Prvo se određuje primarna funkcija svake jedinice za tretman. Zatim, primenom pinč (eng. pinch) metode se za svaku jedinicu utvrđuje najmanja količina za tretman za primarni zagađivač. Konačno, bira se grupa od tri jedinice, pri čemu se pinč tok delimično tretira, tokovi iznad pinč toka potpuno obrađuju, a tokovi ispod pinča se potpuno zaobilaze. Dve studije slučaja iz literature pokazuju održivost i efikasnost ovog pristupa. [ABSTRACT FROM AUTHOR]

Copyright of Chemical Industry / Hemijska Industrija is the property of Association of Chemical Engineers and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)