What are the waste stabilization ponds?
Waste stabilization ponds are man-made sanitation water bodies for treating wastewater by naturally occurring processes and under the influence of sunlight, air and micro-organisms. These ponds can be aerobic, anaerobic and facultative. However most of the ponds exist in facultative nature. The main function of these ponds is the removal of carbon containing organic matter.
Waste stabilization ponds can treat variety of wastewater that include inputs from preliminary treatment, secondary treatment or untreated wastewater. The output from these ponds include treated effluent, sludge and biogas. Sludge that gets accumulated at the bottom of these ponds need to be removed periodically.
Three distinct zones exist in this type of pond-
A: The top zone is aerobic in which the photosynthesis and aerobic biodegradation takes place.
B: In the bottom zone, the organic matter present in wastewater and cells generated in aerobic zone settle down and undergoes anaerobic decomposition.
C: The intermediate zone is aerobic and partly anaerobic. The decomposition of organic waste in this zone is carried out by bacteria which are facultative in nature. The problems associated with the anaerobic reaction is eliminated due to the presence of top aerobic zone.
Maintenance of an aerobic condition at top zone is important for proper functioning of stabilization pond, and it depends on solar radiation, wastewater characteristics, BOD loading and temperature.
When wastewater enters into treatment plant incorporating waste stabilization pond, it passes through following stages:
Raw water is fed into the treatment plant.
Scree?ning: This treatment separates the floating materials and also the heavy settleable solids. It also removes the oils and grease from the sewage. Bar screen is a set of inclined parallel bars which are fixed at a certain distance apart in a channel. These are used for removing larger particles of floating and suspended matter. The operation is used for screening of large floating matter such as floating papers, rags, cloths, etc.
Waste stabilization pond:These are man-made ponds designed for wastewater treatment to remove pathogens and reduce organic content present in wastewater. As waste water enters the pond it stays there for few days before leaving on the other side during which treatment processes takes place. The rate of treatment process in waste stabilization pond is slow as natural treatment processes are involved.
After treatment, the effluent is either returned to ground or reused for irrigation purposes.
How can Netsol Water help?
If you need any information about type of wastewater treatment plant best suited for you, get in touch with Netsol Water. An expert from our technical sales team can provide any additional information you require.
Netsol Water is one of the leading water treatment company in India with services in the field of WTP manufacturing, WWTP manufacturing, STP manufacturing, ETP manufacturing, and much more. The company designs and manufactures all in one systems that are ideal for treating wastewater and the sludge generated and not only turns your waste water into usable water but also acts as a savior of Mother Earth and its precious resource “water”.
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