摘要:
A microorganism separation system comprising a sample solution container 34 containing microorganisms, a separator 1, and a receiver 47, designed to separate microorganisms from the sample solution; further comprising a microorganism detection sensor and a plate 49 which has a plurality of receivers 47 connected to each other and an identification indicator, wherein when the microorganism detection sensor judges that a microorganism has passed, supply of the sample solution is stopped, the detected microorganism is discharged together with the sample solution, and then the solution starts to be injected into the receiver; and, the number of times microorganisms are detected during the time period from the start of the injection to the end is recognized as separation quantity; and then as separation information, the separation quantity, number for a receiver 47 into which a microorganism was injected for each identification indicator, signal waveform sent from the microorganism detection sensor at the separation, date and temperature are stored.
摘要:
A method for collecting bacterial cells comprising: feeding water to be treated containing ammonium and nitrite to an anaerobic ammonium oxidation vessel to denitrify ammonium and nitrite by anaerobic ammonium oxidizing bacteria; and feeding the denitrified treated water to a precipitation vessel, in which an acclimatization container is stored, to cause anaerobic ammonium oxidizing bacteria in the treated water to be attached to an immobilizing material in the acclimatization container, so that the anaerobic ammonium oxidizing bacteria are collected, and, at the same time, to collect anaerobic ammonium oxidizing bacteria in a separated sludge obtained by solid-liquid separation in the precipitation vessel.
摘要:
Entrapping immobilization pellets in which anaerobic ammonium oxidizing bacteria are entrapped and immobilized in an immobilizing material, comprising: fine activated carbon powder and/or fine metal powder such as magnetite or iron powder.
摘要:
Provided are a nitrite-type nitrification carrier and a method for producing the same and a method and an apparatus for removing nitrogen using the same, in which the quantity of organic matter to be added can be substantially reduced to reduce running cost. A method for producing a nitrite-type nitrification carrier in which ammonia-oxidizing bacteria for nitrifying ammonium to nitrite is preferentially accumulated comprises the steps of: entrapping and immobilizing any sludge selected from sediment from a lake, a river or the sea, soil from the surface of the earth, or activated sludge from a sewage-treatment plant into a monomer or a prepolymer for immobilizing microorganisms; and then subjecting the entrapped and immobilized sludge to heat treatment at 30 to 80° C.
摘要:
Provided are a nitrite-type nitrification carrier and a method for producing the same and a method and an apparatus for removing nitrogen using the same, in which the quantity of organic matter to be added can be substantially reduced to reduce running cost. A method for producing a nitrite-type nitrification carrier in which ammonia-oxidizing bacteria for nitrifying ammonium to nitrite is preferentially accumulated comprises the steps of: entrapping and immobilizing any sludge selected from sediment from a lake, a river or the sea, soil from the surface of the earth, or activated sludge from a sewage-treatment plant into a monomer or a prepolymer for immobilizing microorganisms; and then subjecting the entrapped and immobilized sludge to heat treatment at 30 to 80° C.
摘要:
A method of removing nitrogen, in which the nitrogen is removed from wastewater containing a BOD component and ammonium nitrogen by anaerobic ammonium oxidation, comprising the steps of:distributing the wastewater into two portions which are a nitrification vessel and a denitrification vessel at a predetermined distribution ratio;mixing first treated water which is nitrified by ammonium oxidizing bacteria from ammonia to nitrite in the nitrification vessel, with second treated water which is denitrified by denitrification bacteria in the denitrification vessel; andfeeding the mixed water to an anaerobic ammonium oxidation vessel to simultaneously denitrify ammonia and nitrite by ammonium oxidizing bacteria, thereby obtaining a third treated water treated in the anaerobic ammonium oxidation vessel, which is then fed back to the denitrification vessel for denitrification and BOD decomposition.
摘要:
Biological treatment for an environmental hormone in water can be efficiently performed by use of a microorganism-immobilized carrier is provided. To biologically remove an environmental hormonal substance in water by a microorganism-immobilized carrier having microorganism immobilized onto a carrier. The microorganism-immobilized carrier is formed of an immobilizing material prepared by mixing and polymerizing a hydrophilic prepolymer and a hydrophobic prepolymer or prepared by polymerizing a prepolymer having a hydrophilic group and a hydrophobic group in a molecule.
摘要:
The process for treating an ammonium containing liquid by denitrification treatment of an ammonium containing liquid containing at least ammonium comprises carrying out nitrate reduction treatment of reducing nitrate contained in or added to the ammonium containing liquid to nitrite, and carrying out anaerobic ammonium oxidation treatment of simultaneously anaerobically denitrifying nitrite produced in the nitrate reduction treatment and ammonium contained in the ammonium containing liquid by anaerobic ammonium oxidizing bacteria.
摘要:
The method for treating microcystin-containing water which detoxifies microcystin in the microcystin-containing water, the method comprises the step of: bringing the microcystin-containing water into contact with a Sphingomonas bacterium to degrade biologically the microcystin in the microcystin-containing water, wherein: the Sphingomonas bacterium is a strain FERM P-19480 which is deposited as strain MDB1 with International Patent Organism Depositary, National Institute of Advanced Industrial Science and Technology.
摘要:
It is possible to eliminate fluctuation in the pellet strength of the entrapping immobilization pellets according to production lots, and constantly and stably produce the entrapping immobilization pellets having high pellet strength regardless of the production lots. An apparatus for producing entrapping immobilization pellets by polymerizing an immobilizing material into a gel in the presence of an activated sludge to entrap and immobilize microorganisms in the immobilizing material, the apparatus including: a line mixer which mixes an activated sludge with an immobilizing material to prepare a raw material solution, a temperature sensor which measures a temperature of the prepared raw material solution, an addition pump which adds a polymerization initiator to the prepared raw material solution, and a controller which controls the addition pump according to the measured temperature to control an additive rate of the polymerization initiator.