Sharp Kabushiki Kaisha Corporation

Sharp Kabuhsiki Kaisha

Kazuyuki Sakata

Kazuyuki Yamasaki

Kazumi Chuhjoh

Masaki Kataoka

Atsushi Yokotani

Noriyuki Tanaka

Yoshihiro Hamaguchi

Satoshi Nishio

Shunji Hosoda

Hiroshi Makino

Takashi Imai

Seiji Okamoto

Shirou Imazu

Kenji Matuura

Teruaki Nagayasu

Tuyoshi Takahashi

Shigetoshi Okatani

Takahide Miyamoto

Takamasa Uchiyama

Masami Sera

Toyoichi Nasu

Masanori Sanada

In the upper part and the lower part of a micro-nano bubble generation sectionin a micro-nano bubble bathtub, two kinds of micro-nano bubbles different in a size distribution are generated by first and second micro-nano bubble generators (submerged pump-type micro-nano bubble generatorand spiral flow-type micro-nano bubble generator) of two kinds, so that bathtub water containing micro-nano bubbles in a wide size distribution can be produced in a large amount. Some of the water containing micro-nano bubbles generated in the lower part is thrown into the first micro-nano bubble generator (spiral flow-type micro-nano bubble generator) in the upper part, so that the spiral flow-type micro-nano bubble generatorcan generate micro-nano bubbles in a smaller size. Therefore, in this bathtub, micro-nano bubbles abundant in size and large in amount can be produced economically.

Manufacturing method for micro-nano bubble bathtub water and micro-nano bubble bathtub

Drainage water containing an organofluorine compound is introduced into a raw tank () and then filtered through a filtration device (). Next, a microorganism, a micro-nanobubbling auxiliary agent and a nutrient are added thereto in a first transit tank () while micro-nanobubbles are generated thereinto by a micro-nanobubbling machine (), thereby giving treated water. This treated water is then fed into an active carbon column () and then the above-described organofluorine compound contained in the treated water is decomposed by the microorganism as described above.

Drainage water-treating method

In a bioreactor, a culture solution derived from a cultivation tank is separated into bacteria cells and filtrate by a bacteria cell filter. The filtrate is introduced from the bacteria cell filter into a micro-nano bubble generation tank where micro-nano-bubbles are mixed with the filtrate. The filtrate containing micro-nano-bubbles is returned to the cultivation tank to activate the microorganisms therein, so that a biological reaction time is reduced by the activated microorganisms.

Biological reaction method and bioreactor

Water () that contains micro-nano bubbles generated in a micro-nano bubble generation tank () is introduced and treated in a charcoal water tank (ii) which is filled with a charcoal () and in which an air diffusing pipe () is placed and thereafter introduced and treated in a membrane device (). Thus, activities of microorganisms propagating in the charcoal () are increased by the micro-nano bubbles, markedly increasing ability of decomposing organic matters in the water. Therefore, a clogging phenomenon due to the organic matters can be prevented by reducing organic loads on the membrane device (). Moreover, a very small amount of alcohols or salts are added as a micro-nano bubble generation aid to the micro-nano bubble generation tank (), improving an incidence rate of the micro-nano bubbles. The alcohols and salts are easily decomposed by the charcoal water tank (ii) and easily removed by the membrane device ().

Water treatment apparatus and water treatment method

A first treatment tank () to a fourth treatment tank are installed prior to ultrapure water production apparatus (), dilute wastewater recovering apparatus (), general service water recovering apparatus and wastewater treatment apparatus. The treatment tanks (, . . . ) each have a micro-nano bubble generation tank (, . . . ) and an anaerobic measuring tank (, . . . ). Accordingly, microbes within the respective anaerobic measuring tanks (, . . . ) are activated by micro-nano bubbles generated in each micro-nano bubble generation tank (, . . . ) to thereby enhance the treatment efficiency of low-concentration organic matter. Further, when the value measured by dissolved oxygen meter (, . . . ) or oxidation-reduction potentiometer (, . . . ) of each anaerobic measuring tank (, . . . ) exceeds an individually determined given range, the rotational speed of a circulating pump (, . . . ) is controlled to thereby decrease the generation of micro-nano bubbles. Thus, the micro-nano bubble content in water undergoing treatment is held appropriate.

Water treatment system

In a waste water treatment apparatus and/or method, waste water containing aminoethanol and dimethyl sulfoxide is introduced into a first denitrification tank within a first waste water treatment apparatus. Malodorous gas generated in the first waste water treatment apparatus is decomposed and treated in a second waste water treatment apparatus where another waste water is treated as another system. The second waste water treatment apparatus has a second nitrification tank including a semi-anaerobic section. The malodorous gas is introduced from the first waste water treatment apparatus into a scrubber. The malodorous gas is treated by sludge which is circulated between the second nitrification tank and the scrubber.

Wastewater treatment apparatus

In a water treatment system, micro-nano bubbles are used in a production device and a detoxification device as one example of the upstream treatment devices which perform specified treatment with use of water. The micro-nano bubbles are used again in the waste water treatment by a waste water pretreatment device and a waste water treatment device in the subsequent step. Since the micro-nano bubbles are reused, the efficiency of the micro-nano bubbles can be enhanced. Moreover, according to the waste water pretreatment device, treatment water is pretreated with the microorganisms activated by micro-nano bubbles and propagating in a polyvinylidene chloride filler material and then it is introduced into the waste water treatment device in the subsequent step. Thereby it is possible to reduce the waste water treatment load in the waste water treatment device in the subsequent step.

Water treatment method and water treatment system

A waster water treatment apparatus has micro-nano bubbles generation tanks, mixing tanks, a submerged membrane tank, a contact oxidation tank, and an activated charcoal adsorption device. In the micro-nano bubbles generation tanks, micro-nano bubbles are added to the waste water. In the mixing tanks, the waste water containing micro-nano bubbles is mixed with sludge containing microorganisms. In the contact oxidation tank, the waste water containing organofluoric compounds is microbially treated by the micro-nano bubbles added to the waste water. The micro-nano bubbles activate microorganisms in the waste water. Thereby organofluoric compounds are microbially decomposed with effect.

Waste water treatment method and waste water treatment apparatus

A water treatment equipment has a raw water tank as a mixing section, a micronanobubble generation tank, a floatation tank, and a treated water tank. Waste water as treatment water is introduced into the raw water tank and mixed with the water containing micronanobubbles produced by the micronanobubble generation tank. Thereafter, the waste water, as treatment water, is introduced into a lower mixing section of the floatation tank from the raw tank by a raw water tank pump. Also, treatment water containing fine bubbles is introduced into the lower mixing section from a pressure tank. Therefore, the micronanobubbles is mixed with the fine bubbles in the lower mixing section of the floatation tank, thereby almost all the suspended matter in the treatment water is surfaced. Thus, the water treatment equipment enhances separatability of suspended matter.

Water treatment equipment

The application device for liquid containing micro-nano bubbles generates micro-nano bubbles in a wide size distribution with use of a submerged pump-type micro-nano bubble generator and a spiral flow-type micro-nano bubble generator. A micro-nano bubble generating aid metering pump is controlled by a bubble level meter and a level controller, so that the supply amount of a micro-nano bubble generating aid is controlled in response to the level of bubbles from a fluid level. The supply amount of a micro-nano bubble generating aid is also controlled by a turbidimeter and a controller in response to the turbidity of the liquid in a micro-nano bubble generation tank, while the amount of air supplied to the submerged pump-type micro-nano bubble generator is controlled in response to the turbidity of the liquid. Therefore, the device can produce a large amount of various micro-nano bubbles in a wide size distribution more economically.

Manufacturing device and application device for liquid containing micro-nano bubbles

In waste water treatment apparatus and method, a mineral mixing tank receives biologically treated water, sludge which is generated by biological treatment, and mineral sludge which contains calcium and so on from a settling tank. A mineral pump returns the sludge and the treated water from the mineral mixing tank to a raw water tank. An air-lift pump circulates treatment water between a reaeration tank having a semi-anaerobic section and a denitrification tank. In circulation of the treatment water between the reaeration tank and the denitrification tank, the semi-anaerobic section alleviates the change of environment for microorganisms and thereby realizes the environment easy to propagate for the microorganisms. The air-lift pump allows the agitation with low energy consumption even when the microorganisms are cultured up to a high concentration thereof.

Waste water treatment apparatus and waste water treatment method

In a water treatment apparatus, microorganisms propagating on wood charcoal are activated by micro-nano bubbles contained in treatment water. Water treatment is carried out with the activated microorganisms propagated on the wood charcoal. Thereby, a stable treatment is achieved. Organic matters adsorbed by the wood charcoal are decomposed by the activated microorganisms propagated on the wood charcoal.

Water treatment method and water treatment apparatus

A calcium carbonate mineral is placed in a lower portion of a second water tank, while sludge precipitated in a sixth water tank is returned to an upper portion. A blower and an air diffusion pipe weakly aerate the lower portion. Thus, an unreacted chemical sludge zone is formed in the upper portion of the second water tank. As a result, the second water tank can execute a primary treatment of fluorine in a waste water by the calcium carbonate mineral, a secondary treatment of fluorine and a primary treatment of phosphor by unreacted chemicals, treatment of surface active agent by microorganisms in a return sludge and reduction treatment of hydrogen peroxide by anaerobic microorganisms in the return sludge. The unreacted chemicals are thus reused, so that the amount of generation of waste can be reduced and concurrently the treatment can be executed with energy conservation.

Treating fluorine waste water containing organic matter, phosphor and hydrogen peroxide

Waste water containing fluorine, nitrogen and organic matter is treated by introducing the waste water into a water tank filled with calcium carbonate mineral and anaerobic microorganic sludge. An upper portion of the water tank is occupied by the anaerobic microorganic sludge concurrently with natural precipitation of the calcium carbonate mineral toward a lower portion of the water tank. Calcium ions dissolving from the calcium carbonate mineral precipitated in the lower portion of the water tank are made to chemically react with the fluorine in the waste water. At the same time, the organic matter in the waste water is treated by utilizing anaerobic microorganisms in the anaerobic microorganic sludge in the upper portion of the water tank. The nitrogen in the waste water is treated to be reduced by reducibility that the anaerobic microorganisms in the waste water own. There is thus provided the waste water treatment method and waste water treatment equipment capable of treating the waste water containing fluorine, nitrogen and organic matter at low cost without necessitating the organic matter such as methanol as an additional chemical.

Waste water treatment method and waste water treatment equipment capable of treating waste water containing fuluorine, nitrogen and organic matter

Waste water treatment method and waste water treatment equipment capable of treating fluorine waste water containing organic matter, phosphor and hydrogen peroxide

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Fukuyama, Japan

Kazuyuki Sakata