A highly effective versatile contact material that keeps a high volume of bacteria internally and externally, and never releases bacteria all at once.
01
High efficiency contact materials to endure use (condition bottom of the * recommendation) more than it for ten years when I raise sludge adhesion using acrylic fiber of specially processing it to a wide thread with the swim-bed biofringe and finished weaving it using strength and a special fiber thread of the water repellency to a vertical thread. The potential of the textile was utilized to the every corner of the manufacturing method including material and the processing and released it in 1989 and acquired dozens of patents at home and abroad.
frame setting image with the 100mm pace.
02
In the case of general fibrous contact materials, the sludge adheres only to the surface, but this yarn firmly penetrates and adheres to the inside of the sludge, thus increasing the retention time of the sludge. As a result, a healthy food chain inhabited by a variety of microorganisms emerges, and stable and highly efficient treatment becomes possible.
■A wide variety of microorganisms inhabiting the site (micrograph)
The thin thread-like fibers are biofringes, between which a variety of microorganisms including Bordicella (upper left: protozoa: ciliates), Philodina, Rotaria (upper right: metazoans: rotifers) and Diplogaster (lower, metazoans) appear. By maintaining such a long food chain, the amount of sludge generation can be greatly reduced. The relationship between the amount of sludge generated and the food chain is shown in the figure below. Translated with www.DeepL.com/Translator (free version)
03
While a part of the sludge adheres firmly to the thread, the peripheral part with weak adhesion is partially detached by the oscillation of the thread and water flow. As a result, highly active sludge is newly exposed on the surface, and BOD decomposition takes place and sludge is deposited. By repeating the detachment and deposition in this way, simultaneous detachment does not occur and treatment can be maintained at high efficiency. On the other hand, the amount of sludge generated in the center of the sludge is reduced by the self-digestion of the sludge due to the abundant food chain caused by the long residence time.
04
Ordinary activated sludge cannot adsorb SS in wastewater, so it is difficult to treat SS, but Biofringe can treat high concentration SS because the surface attached sludge adsorbs SS in wastewater in a short time (0-dimensional adsorption) and then gradually decomposes it. As shown in the figure, when the BOD load is small, the SS conversion rate is about 10%, and as the load increases, the outflow SS increases, but even with a high BOD volumetric load of 7 kg/m3.day, the conversion rate is about 25%, indicating that the SS treatment capacity is high.
05
Ordinary activated sludge cannot adsorb SS in wastewater, so it is difficult to treat SS. However, Biofringe can treat high concentration SS because the surface attached sludge adsorbs SS in wastewater in a short time (0-dimensional adsorption) and then gradually decomposes it. As shown in the figure, when the BOD load is small, the SS conversion rate is about 10%, and as the load increases, the outflow SS increases, but even with a high BOD volumetric load of 7 kg/m3.day, the conversion rate is about 25%, indicating that the SS treatment capacity is high.
06
It is possible to process the width and length according to the application, such as unit type input to new or existing facilities or tank type. In addition, both circulating aeration and full-bottom aeration can be used for rationalization of treatment.
Japanese