|
|
|
Lagoon restoration
As for lagoon (oxidation pond) in lagoon treatment method, sludge tends
to accumulate and it requires maintenance such as regular sludge removal.
Especially, the amount of deposited sludge is large in anaerobic lagoon
and lagoon where aeration is not performed. The treatment capacity will
decrease if the sludge is not removed, the certain period of residence
time can not be kept and will cause the detoriation of the water treatment
ability of the lagoon.
In addition, in the recent years of economic development with the population
concentration on the city of developing countries and countries with poor
financial power are having trouble on how to dispose the removed sludge.
The increased amount of drainage has also increased the load on the lagoon.
The increased drainage volume will also increase the amount of deposited
sludge on lagoons with small capacity. With large waste water flows on
the lagoons, the inflow of the waste water will only flow on the surface
of the lagoons and released without the decomposition of the organic matter.
This is the current situation on the lagoons, but with the "MSC method"
sludge processing technology and MiraCarbon CarbonFiber technology it is
possible to restore the functions of the lagoon treatment facility.
Detoriated lagoon
The lagoons function declines with the accumulated sludge. The residence
time needed for treating waste water is not kept and so it will be released
without being treated. The deposited sludge will become anaerobic and will
produce malodorous substances such as hydrogen sulfide.
 |
| Detoriated lagoon |
 |
 |
| Shallow lagoons because of the accumulated sludge |
The release of untreated water |
Bottom sediment removal by MSC method
MSC method is a very economic compact sysytem that can treat sludge in
large quantities.
The treated sludge is decomposed and the suppression of the malodorous
substance from sulfide and ammonia is performed. And since the MSC treated
sludge will become soil rich in nitrogen, phosphorus and other nutrients,
it can be re-used as a good agricultural soil.
 |
| Schematic view of the MSC method bottom sediment removal |
Improving the treatment function by MiraCarbon
By installing MiraCarbon on lagoons after the sludge has been removed,
it can improve water quality, will increase the treatment speed and increase
the treatment amount. It will higly restore the lagoon's treatment functions.
Decomposition is improved by the activation of the microorganisms, it will
reduce the accumulation of sludge and will suppress the generation of malodor.
 |
| Improvements by using MiraCarbon |
Using MiraCarbon Plus
Using MiraCarbon Plus to enhance the natural purification mechanism of
the lagoon.
■ ＋Air Aeration
The aeration has a great influence on the functions of the aerobic bacteria
to decompose organic matter. When the oxygen supply from the algae's photosynthesis
on the surface of the water is not enough to activate the microorganism,
oxygen is apllied by aeration equipment.
By activating the aerobic bacteria that adhered on the MiraCarbon, it
will promote the decomposition of pollutants with the water circulation
in the lagoon.
■ ＋Cation Metal ion
The metal ion mineral substance lacking in the Ecosystem can be provided
with the combination of MiraCarbon. Metal ions activate the microbe, promotes
the growth of algae, photosynthesis is performed so thus the absorption
of nutritive salts and it will improve the water purification effect.
|
