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Current Status of Sludge Collection, Transportation and Treatment in Ho Chi Minh City

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DOI: 10.4236/jep.2013.412154    3,906 Downloads   5,475 Views   Citations

ABSTRACT

In the process of construction and development, Ho Chi Minh City is discharging about six types of sludge: 1) sludge from urban wastewater drainage systems; 2) sludge from industrial wastewater drainage system; 3) sludge from the canal dredging activities periodically; 4) sludge from septic tanks; 5) sludge from the water treatment station/plant; 6) sludge from the construction sites. Sludge’s components are very different among types of sludge, sludge from the sewer network and canal dredging contain mainly sand and soil (70% - 90% dry weight), while the sludge from the wastewater/water treatment station/plant and from septic tanks contain mainly biodegradable organic substances (55% - 80% dry weight). The concentrations of all above-mentioned sludge (except sludge from the hazardous industrial wastewater treatment plant) are lower than toxic threshold. The volume of total sludge is about 3000 - 4000 m3/day (5000 - 6000 tons/day), excepting the amount of sludge generated from the water treatment plant (which is collected and treated separately). Sludge from wastewater treatment plants and septic tanks is collected, transported and recycled to become organic fertilizer. The other types of sludge are collected, transported, and disposed at the unknown” locations, even though they have different values for use.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

N. Viet, T. Dieu and N. Loan, "Current Status of Sludge Collection, Transportation and Treatment in Ho Chi Minh City," Journal of Environmental Protection, Vol. 4 No. 12, 2013, pp. 1329-1335. doi: 10.4236/jep.2013.412154.

References

[1] Metcalf & Eddy, “Wastewater Engineering: Treatment and Reuse,” McGraw Hill, New York, 2004.
[2] N. T. Vietm, et al., CENTEMA, “Survey the Status of Septic Sludge Collection, Transportation and Treatment in Ho Chi Minh City: Studying and Proposing Management Mechanism,” Research Report of Department of Science and Technology of Ho Chi Minh City, 2008.
[3] CDM, “Water Supply Sludge Treatment for HCMC,” Report for Ho Chi Minh City, 2010.
[4] DONRE, “Master Plan (Oriented Strategy) the Waste Management System in Ho Chi Minh City by 2020, Vision to 2030, Driven to the Green Management System,” 2011.
[5] UDC, “Construction Da Phuoc Plant of Receiving, Processing and Treatment of Sludge, Capacity of 3000 m3/ ngd,” Investment Report, 2011.

  
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