Impact of Controlling Different Kinds of Waste Sludge with Acid and Alkaline on Release of Ammonia and Phosphate

Abstract:

pH was controlled to 3.0 or 10.0, with pH uncontrolled as blank, to study the release of ammonia and phosphate for different kinds of waste sludge, namely primary sludge (PS), waste activated sludge (WAS), and mixed sludge (MS) composed of PS and WAS at a ratio. The results show that acidity and alkalinity has different effects on different kinds of sludge at room temperature. When the pH is controlled to 10.0, it is observed that ammonia for PS and WAS is rapidly released to the top, 6.53mg/g TS and 8.40mg/g TS on the 4th day. But from the peak value on, the release amount shows downward until the experiment period ends. At pH 3.0 the release amount for PS is little, even less than the blank test, while the release amount for WAS is higher at pH 3.0 in all the period, and arrives at the maximum 10.07mg/g TS on the 6th day, after which the values keep relatively stable. Compared with the release of ammonia, the changes of release amount of phosphate is similar to the two kinds of waste sludge mentioned above, acidity>alkalinity>blank test ,and the amount at pH 10.0 is close to the blank test. Because of high percentage of PS, the release law of ammonia for MS is similar to PS. The order of release amount is as follows: alkalinity>blank test>acidity, but PS is different , the release amount at pH 10.0 always keeps rising until the period ends. The release of phosphate is consistent with the PS and WAS except that it is inhibited under alkaline condition.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 2492-2497
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.2492
• Online since: August 2013
• Authors: Hong Ying Yuan, Xiao Pei Wang, Li Jie Wu, Si Fang Niu
• Keywords: Acid and Alkaline Control, Different Kinds of Waste Sludge, Release of Ammonia and Phosphate

References

[1] Ministry of Housing and Urban-Rural Development of the People's Republic of China, National Development and Reform Commission. Technical guide to treatment and disposal for sludge from municipal wastewater treatment plants(on trial) (Beijing ,2011).In Chinese

[2] Parsons S A, Smith J A. Elements .109-112 (2008), p.4.

[3] Doyle J D, Parsons S A. Water Research .3925-3940 (2002), p.36.

[4] Tong J, Chen Y.Water Research .2969-2976 (2009), p.43.

[5] Britton A, Koch F A, Mavinic D S, et al. Journal of Environmental Engineering and Science .265-277 (2005), p.4.

[6] Saktaywin W, Tsuno H, Nagare H, et al. Water Research . 902-910 (2005), p.39.

[7] Kuroda A, Takiguchi N, Gotanda T, et al. Biotechnology and Bioengineering .333-338 (2002), p.78.

[8] Tong J, Chen Y. Environmental Science and Technology . 7126-7130 (2007), p.41.

[9] Kampas P, Parsons S A, Pearce P, et al. Water Research . 683-689 (2007), p.41.

[11] Wu H, Gao J, Yang D, et al. Chemical Engineering Journal .1-7 (2010), p.160.

[12] Cokgor E U, Oktay S, Tas D O, et al. Bioresource Technology . 380-386 (2009), p.100.

[13] Ahn Y H, Speece R E. Water Research . 2210-2220 (2006), p.40.

[14] Wu H, Yang D, Zhou Q, et al. Journal of Hazardous Materials .196-201 (2009), p.172.

[15] Yuan J, Chen Y, Li Q, et al. China Water and Wastewater . 96-98 (2010), p.26.

[16] Arnaiz C, Gutierrez J C, Lebrato J. Bioresource Technology . 1179-1184 (2006), p.97.

[17] American Public Health Association, American Water Works Association, Water Environment Federation. Standard Methods for the Examination of Water and Wastewater. 20th ed (Washington D. C., USA, 1999).

DOI: 10.1002/j.1551-8833.1932.tb18153.x

[18] China State of Construction. Determination method for municipal sludge in wastewater treatment plant (Beijing, 2005).In Chinese

[19] China State of Construction. Methods for the examination of municipal sewage (Beijing, 2004).In Chinese

[20] Zhao M, Yan Q, Ruan W, et al. Environmental Technology .119-125 (2011), p.32.

[21] Yu G, He P, Shao L, et al. Water Research .4637-4644 (2008), p.42.

[22] Liu C, Zhao Y, Zhang J, et al. Acta Scientiae Circumstantiae . 2006-2011 (2008), p.28.

[23] Cloete T E, Osthuizen D J. Water Research . 3595-3598 (2001), p.35.