[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Accepted articles :: Archive :: Search :: Submit :: Contact ::
:: Volume 3, Issue 4 (9-2016) ::
jehe 2016, 3(4): 270-279 Back to browse issues page
Study of Operational and Maintenance Problems and Parameters of Extended Aeration Activated Sludge Process in Golestan Hospital Wastewater Treatment Plant, Ahvaz, and Their Solutions
Afshin Takdastan, Bahareh Kordestani *, Abdolkazem Nisi, Reza Jalilzadeh Yangjeh
Abstract:   (3740 Views)

Background:Hospital wastewater is among hazardous wastewater due to its composition of pathogens and toxic chemicals. Discharge of untreated hospital wastewater to environment is hazardous for human and environment. Aims of this study were to identify Operational and Maintenance problems of Extended Aeration Activated sludge process in Golestan Hospital wastewater treatment plant (WTP), Ahwaz, Iran, and to find their solutions.                                                                   Materials and Methods:Sampling period was 6 months of 2015. BOD5, COD, and TSS parameters analysed in the hospital WTP effluent. In addition, VLR, Qr/Q, MLSS, F/M, SVI, HRT, and θc parameters measured in aeration tank, then operational and maintenance parameters calculated.                                                                                                         Results:Results shown that average of operation & maintenance parameters were: F/M = 0.35, HRT = 6 hour, Qr/Q = 64.28 %, VLR = 1.1 Kg BOD/m3.d, MLSS = 2819.36 mg/l, SVI = 144.89 ml/g, θc = 10.93 days.                                                       Conclusion:Results of operational and maintenance parameters shown that biological process behavior of the hospital WTP was Extended Aeration Activated Sludge in past years, but converted to conventional activated sludge process due to increase in hospital beds of clinical and out patients departments , which increased water consumption lead to increase wastewater flow rate. High flow rate lead to increase hydraulic load and diluting organic matter load, so hydraulic retention time and sludge age decreased.

Keywords: Hospital Wastewater, Activated Sludge, Operation Treatment
Full-Text [PDF 465 kb]   (2423 Downloads)    
Type of Study: Research | Subject: Special
Received: 2017/01/7 | Accepted: 2017/01/7 | Published: 2017/01/7
Add your comments about this article
Your username or Email:

CAPTCHA



XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Takdastan A, Kordestani B, Nisi A, Jalilzadeh Yangjeh R. Study of Operational and Maintenance Problems and Parameters of Extended Aeration Activated Sludge Process in Golestan Hospital Wastewater Treatment Plant, Ahvaz, and Their Solutions. jehe. 2016; 3 (4) :270-279
URL: http://jehe.abzums.ac.ir/article-1-268-en.html


Volume 3, Issue 4 (9-2016) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4299