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Bismillahirrohmanirrohim Assalamualaikum warahmatullahi wabarakatuh Which I am proud of my fellow students I hope all of you are always encouraged by health, safety and success Let's start this meeting with a prayer Prayers are allowed Okay, fellow students, which I am proud of Let's continue
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a lecture on environmental technology. On this occasion, we will continue to discuss together about liquid waste management technology. So this is the second stage of processing. In the previous meeting, we discussed together the liquid waste management technology in the first stage.
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we have discussed yesterday, now we go to phase 2 management so phase 2 management has biological management then later here will continue the second irrigation or secondary sedimentation later here actually there is phase 2 management there are several technologies used
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later depends on the characteristics of the liquid liquid so from we have to know do research on the characteristics of liquid liquid then we determine the technology that will be used so one of the considerations is characteristic yes later there are several other considerations related to
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which technology will be used so in this second stage treatment divided into two actually divided into two namely un-aerobic treatment and aerobic treatment, yes, here it can actually be
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the second stage treatment uses a combination, so using a mixture of anaerobic methods and aerobic methods. So if the anaerobic one uses an anaerobic microorganism, while this one uses an aerobic microorganism. Then from this anaerobic method,
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there are two here, namely the dissolved system and the attached system, so the dissolved system or suspended growth and the attached system or attached growth. In this dissolved system, there are currently several technologies, namely anaerobic wells, then APR, often called anaerobic bubble reactor,
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to ABR then QA SP or upload anaerobic sludge blank is also in the system. While in the system there is also an anaerobic technology for the reactor, so later there are several options or alternative technologies from this anaerobic method, while the aerobic method is
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is divided into two, namely the suspended system or Suspend Growth and the attached system or attached growth. Actually, this is a classification or division of the microorganisms, yes, later the microorganisms will be suspended or attached to the reactor.
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Then here in this suspended grout system, divided into two, namely the aeration pond and the activated slat or usually called active sludge. While in the adjacent system there are several technologies
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there is RBC or rotating biological contactor then the tracking filter air filter and there is also the MBPR technology or moving bed bioreactor so this is several methods and technologies in the second stage of fluid circulation and actually
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can be combined, as I said earlier, it can be combined depending on the characteristics, one of them is the consideration of the characteristics of the liquid water or liquid liquid, yes, APR or anaerobubble reactor is one type of suspension growth treatment that uses scat, so this is
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compartment or installation from APR then here there are bubbles, there are scratches here there are scratches, the purpose is for contact with domestic and microorganisms, here later there will be contact in these bubbles, the liquid liquid water with microorganisms
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This is a relatively cheap treatment because one of them does not use electricity. So this is more from microorganisms without the ability to efficiently from microorganisms. However, one of the disadvantages of this APR technology is its ability to
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reduce low pathogen and nutrient bacteria, one of the weaknesses, so after this, so after what, the installation of this APR needs additional processing or can be before entering here to install this APR, there needs to be a initial processing here, so that's one of the
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the disadvantages, so this APR is relatively cheap but there must be some pre-treatment treatments or before installation or after installation of APR or PASKA, additional treatment then UASB or Upload and Aerobic Slide Blank is also used a lot
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So in UASP, it stimulates the formation of the sludge or granular sludge that is formed in the middle of the tank here. So the input or influence of the liquid is from below. So this is distributed, then later there will be a sludge formed here.
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will repair or process the liquid water with the microorganisms that are here as well. Then one of the results or side results of the installation of this ussb is that there is gas methane gas methane or biogas, yes, there is gas methane later, so there is a need for the storage of this gas methane. Well, this
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The adjustment of the flow rate to enter the reactor needs to be taken into account so that it can be effective and efficient. Here, there will be a bubble cover or a slat blanket. The slat blanket is shaped here, or if it can be seen, it can also be seen here.
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later the treatment water will come out here, above, so the flow will go up, so the input from below will come out from above, the input from below will come out from above, then the aeration column is a column that is equipped with an aerator, so this is an aerator, this is to supply oxygen,
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So, if this is an aeration pond, it means that it includes the method of aerobic water treatment with microorganisms that need oxygen. It is necessary to use an aerator to increase the oxygen level in this aeration pond. This is an aeration pond, then active mud.
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Activated Slat or active mud is also a long time ago, this technology in the management of wastewater has been since 1880. The existence of Activated Slat involves active microorganisms and has the ability to stabilize organic materials in this domestic wastewater.
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So in general there are three components in this activated slot There is a micro-organism growth reactor Then there is a liquid density sampling unit And then there is a mud recirculation So from the second sedimentation, the mud will be recirculated
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to compartments or components in other reactors so there is a mud circulation so the model was like this mud recirculation mud recirculation to be processed again, so activated slatterdink to be used as a micro-organic media
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is back to the active number earlier, then there is RBC rotating by legal contactor, it is often used in communal public housing, which is not too many, what is the name of the user, the customer of the housing, the user of the housing, so here there are biodiesel biodiesel, there are
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the chakram of the micro-organism media, the growth of micro-organisms, so it will rotate slowly when installed. Then there is also a flood water, not all of them are submerged in the water. The RPC is as deep as the chakram, not all of them are submerged in the flood water. For example, this one is also open,
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there is actually a cover, yes, there is a cover even though it is not close because it still needs oxygen so the micromanagement still needs oxygen. Here, one of the advantages of RBC is also this is a rotation of
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the circles are slow, just need to be slow so that it requires low pressure then a stable process this goes in here then later the liquid will be processed in this reactor later it comes out here
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and for this RBC, one of the uses is the other is the lump or the slat that emerges is only a little lump or slat that is the result of this treatment. Well, friends, all of that I can convey on this occasion. Thank you for your attention.
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And I'm sorry for all my mistakes and mistakes. See you again. Stay excited. Wassalamualaikum warahmatullahi wabarakatuh.