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The sewer system is now required to incorporate multi-functional infiltration facilities for improving the water quality of public
waters and for inundation control in the case of urban runoff by accumulated regional rainfall. Kubota provides the combined sewer system to protect the safety of the beautiful seas and rivers against intensive heavy rainfall along with a highly-advanced water
treatment technology for creating a sound water environment. |
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Concentration of sludge is an important process. Existing mechanical concentrators are costly to operate and complex to control. However, Kubota's sewage sludge concentrator (belt type) is ideal in terms of saving installation space, care, and power because sludge is fed onto a running stainless belt that filtrates the sludge using gravity before the sludge is discharged as highly concentrated sludge at the discharge point. |
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Kubota's water purification plants ensure the stable and economical supply of safe and fresh water. The advanced systems eliminate offensive odors and tastes and remove trace constituents of organic matters in water, most of which originate from deteriorated water sources. Our membrane filtration system uses proprietary ceramic membranes that we have developed to purify water. Kubota offers a variety of water purification solutions according to the quality of raw water and the quantity of water required. |
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The sludge generated in sewage plants is incinerated after being dehydrated to reduce its weight. The circulating flow incinerator pulverizes the sludge with sand (heated to about 850°C) that flows through the furnace, dries that pulverized sludge instantaneously, and then gasifies and burns it. By re-circulating the flowing sand, combustion efficiency has been increased and the process has been made more compact. Energy savings in a variety of forms can also be aimed at through high-efficiency heat collection systems etc. |
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Leachate from waste incineration ash and fly ash buried in landfill sites may contain dioxins. Kubota's decomposition system applies synergic effects between ultraviolet rays and ozone that results in a strong photochemical decomposition capability. This is used for reducing the concentration of dioxins in water to less than 0.1 pg-TEQ/L which is 1/100 of the water discharge standard (10 pg-TEQ/L). |
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This ceramic membranes perform microfiltration of raw water with nominal pore size of 0.1 µm. The system succeeds in removing the turbidity, chromaticity, pathogenic microbes, iron, manganese, and arsenic in raw water. Well water and industrial water can be filtered to the level of tap water. The simple structure of the system contributes to reductions in water treatment costs. |
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Our submerged membranes use bacteria to purify wastewater and separate purified water from the bacterial used for purification. Since the pores have an extremely small diameter of 0.4 µm (4 mm/10,000), the submerged membranes separate microbes from wastewater with a high degree of accuracy. The submerged membrane unit & cartridge realize a space-saving, energy-saving, advanced wastewater treatment system. |
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Membrane methane fermentation unit
This unit both ferments food waste in order to reduce volume substantially and collects biogas from the fermentation for clean energy. Activities of methane generating bacteria are susceptible to suffocation by ammonium. However, the submerged membranes separate ammonium to maintain a high concentration of methane generating bacteria. Kubota's membrane methane fermentation unit is used mainly in food processing plants. |
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The key to efficient improvement of waste recycling is the fragmentation process in pre-treatment phase. This shredder crushes even bulky waste, ranging from hard and soft plastic waste, waste lumber, and long refuse, into fine pieces through a single crush cycle at low rotation speed. Size adjustment for shearing can be made as well. This is due to automatic adjustment to the volume of waste and adoption of a sequential shear system that prevents waste from tangling with the shredder. |
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This shredder works on the principle of high speed and combined crushing mechanism such as impact, shearing, compression, and grinding. Regardless of material properties, the shredder enables crushing a mixture of soft wastes (eg., tatami mat) and hard wastes (metals, concrete, etc.) into even particles of fragmentation, which can be screened by type at the subsequent process before they are transported for recycling. Thus, the shredder is suitable for recovering valuable resources, such as iron and aluminum. |
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