By: Sunny Wu（sunny7@juntaiplastic.com）
Post Date: August 20, 2021
Post Tags: Nomal Question Of MBBR
1. Q: How long does it take for the filler to hang the film during low-temperature debugging in winter?
A: The standard can be achieved within one month.Film hanging is actually a process, the film hanging is divided into 2 angles,
1. Our naked eyes can see the obvious biofilm on the filler, this time is seven days;
2. The time to reach the standard, this time is probably within one month in winter;
3. The time for the biofilm to fully mature will be relatively long, because from a professional point of view, it takes at least one winter and summer to complete the biofilm before the colony on it can finally achieve stability.
In summary, although from an academic point of view, our stability is probably after a winter and summer. From the point of view of effect, the water can reach the standard within 30 days, and from the point of view of naked eyes, it is about seven days.
2. Q: Does the MBBR treatment process need to add additional biological agents?
A: In a strict sense, MBBR does not require the addition of bacterial agents. It uses reasonable optimization parameters to naturally enrich, for example, nitrifying bacteria or denitrifying bacteria, because its biofilm conditions have It is conducive to the attachment of related bacteria, such as anammonia. Under certain conditions, it is conducive to the attachment of our anammonia bacteria. Under special water conditions, for example, there are some refractory water quality, or the source of water quality is relatively single. There are some obligate inoculations that have special effects. In this way, the inoculation can be used as the initial inoculation, and there is no need to add them in the follow-up.
To sum it up, it is not necessary under the conditions of domestic sewage, and under some specific wastewater conditions, it can be used as a research proposition to do related research.
3.Q: Some experts in the industry say that the packing is easy to block and the flow pattern is difficult to control?
A: This Question cannot be called a Question, it should be a difficult point. It is because of such difficulties that different technical teams and manufacturers can be screened out to overcome the difficulties, and only if they are overcome can they be the world leader. If there is a problem, it will be gradually eliminated by the market.
4. Q:Does MBBR need denitrification flushing?
A: The biggest advantage of MBBR is that compared with traditional biofilms, it does not need backwashing, because its biofilms fall off automatically. From our research, we found that when your biofilms are more active, it There will be more secretions of the extracellular polymer, and its stickiness will be strong. Then when it ages, the extracellular secretions decrease, and its viscosity weakens, it will automatically fall off in the process of fluidization, and then a new biofilm will grow up, so it does not need to be washed.
5. Q:What is the core of MBBR, what is the magic?
A: There are two cores of MBBR. One is filler and the other is fluidization. The filler is used as a carrier. There is no unified study to show how much its performance has an impact, but its shape will have an impact on fluidization. Yes, so it is said that flat cylindrical fillers are the most widely used at home and abroad, so the research on fillers has been going on. You can try to see which different fillers have the best effect.
From the perspective of engineering, the dimensions to be evaluated are performance, film mounting speed, final stabilization effect, life, wear resistance, etc., so from now on, the core of the suspended carrier is still fluidization.
6. Q:What is the filling rate of the MBBR system?
A: The limit filling rate that has been verified so far is 67%, the largest aerobic zone that can be achieved in the project is 60%, and the hypoxic zone is 50%.Juntai MBBR usually has a filling rate of about 35%.
7. Q:Can MBBR still run when the water temperature is 3 degrees?
A: It is understood that the inlet water of the Norwegian Nordheim Wastewater Treatment Plant (which serves the Winter Olympic Games) abroad is ice and snow melt water, and the water temperature is 3 degrees. After practice, it can stably meet the standard.
8.Q: Will the filler be prone to sludge expansion?
A: The main reason for the formation of sludge expansion is filamentous bacteria. International reports show that fillers help to weaken sludge expansion, because it can beat the "long and long" filamentous bacteria in the sludge system. Broken, if it is a normal sludge floc, and the size of the sludge floc is much smaller than the size of the filler, it will not break the sludge. Therefore, from international research, MBBR is beneficial to improve the sedimentation of sludge. From our engineering practice, we have not found that the system using MBBR has obvious characteristics of sludge bulking.