{"search_session":{},"preferences":{"l":"ar","queryLanguage":"ar"},"patentId":"US_6616844_B2","frontPageModel":{"patentViewModel":{"ref":{"entityRefId":"165-408-967-213-923","entityRefType":"PATENT"},"entityMetadata":{"linkedIds":{"empty":true},"tags":[],"collections":[{"id":11776,"type":"PATENT","title":"Korea Advanced Institute of Science and Technology Patent Portfolio","description":"","access":"OPEN_ACCESS","displayAvatar":true,"attested":false,"itemCount":29088,"tags":[],"user":{"id":91044780,"username":"Cambialens","firstName":"","lastName":"","created":"2015-05-04T00:55:26.000Z","displayName":"Cambialens","preferences":"{\"usage\":\"public\",\"beta\":false}","accountType":"PERSONAL","isOauthOnly":false},"notes":[{"id":8411,"type":"COLLECTION","user":{"id":91044780,"username":"Cambialens","firstName":"","lastName":"","created":"2015-05-04T00:55:26.000Z","displayName":"Cambialens","preferences":"{\"usage\":\"public\",\"beta\":false}","accountType":"PERSONAL","isOauthOnly":false},"text":"
Search Applicants and Owners separately: Korea advan* inst*. Select more for logical variants. Add to collection. Select all patents in the collection and expand by simple families. Add to collection. Total patents: 10000+
Search Applicants and Owners separately: Korea advan* inst*. Select more for logical variants. Add to collection. Select all patents in the collection and expand by simple families. Add to collection. Total patents: 10000+
(a) equalizing a flow rate and an amount of concentrated wastewater having at least 10,000 mg/L of BOD in an equalization tank;
(b) carrying out solid-liquid separation of equalized wastewater from step (a) by adding an aggregating agent thereto so that concentrations of organic material and nitrogen in the wastewater can be adjusted to desired levels;
(c) stripping ammonia selectively from the wastewater leaving the concentration of organic material unchanged;
(d) fermenting non-degradable organic material in the wastewater from step (c) by using an anaerobic microorganism, whereby the material can be converted into forms that can be easily fed to aerobic microorganisms in subsequent steps; and also fermenting sludge that is returned from step (i) below to produce organic acids;
(e) carrying out Anammox reaction of ammonia in the wastewater with NO 2 —N in the sludge, which underwent anaerobic fermentation in step (d) after being returned from step (i);
(f) activating soil microorganisms that are contained as a solid form in a biopond;
(g) feeding the activated microorganisms into a denitrification-inducing aeration tank, which then contributes both to the degradation of organic material and to the nitrification from ammonia nitrogen in the wastewater from step (e) to NO 3 —N in cooperation with aerobic microorganisms, which already exist in the aeration tank, and mixing to induce denitrification;
(h) denitrificating the wastewater from step (g) by reducing nitrates in the wastewater to nitrogen through endogeneous respiration of the microorganisms under a condition in which oxygen does not exist and external carbon sources are not introduced;
(i) carrying out a solid-liquid separation of the wastewater from the microorganisms to produce a precipitated sludge and a supernatant and returning a part of the precipitated sludge to step (d) above; and
(j) removing any residue from the supernatant from step (i) by aggregating them and effluenting the finally treated wastewater."],"number":1,"annotation":false,"claim":true,"title":false},{"lines":["An apparatus comprising the following elements:
(a) an equalization tank for equalizing a flow rate and concentration of wastewater that has originated from a source,
(b) a chemical solid-liquid separator for adjusting concentrations of organic material and nitrogen,
(c) a stripping tank for selectively removing ammonia nitrogen while leaving the concentration of organic material in the wastewater unchanged,
(d) an anaerobic fermenter for both fermenting non-degradable organic material in the wastewater by using an anaerobic microorganism, whereby said organic material can be converted into forms that can be easily fed to aerobic microorganisms in subsequent steps, and for fermenting sludge that is returned from a sedimentation tank to produce organic acids;
(e) an Anammox tank for reacting ammonia in the wastewater with NO 2 —N in said sludge to generate nitrogen gases;
(f) a biopond that contains solidified soil microorganisms;
(g) a denitrification-inducing aeration tank both for the degradation of organic material in the wastewater by aerobic microorganisms and for the nitrification of ammonia nitrogen into NO 3 —N, said aerobic microorganisms being activated and fed from the biopond into the aeration tank;
(h) a denitrification tank to reduce nitrates in the wastewater to nitrogen through endogeneous respiration of the microorganisms under a condition in which oxygen does not exist and external carbon sources are not introduced;
(i) a sedimentation tank for solid-liquid separation of microorganisms from the denitrified wastewater in which organic material has been nearly completely oxidized;
(j) an aggregation-sedimentation tank for aggregating and removing residual material from a supernatant obtained from said sedimentation tank; and
(k) a dewatering tank for reducing part or all of the water in a sludge discharged from said solid-liquid separator, anaerobic fermenter, sedimentation tank and aggregation-sedimentation tank."],"number":2,"annotation":false,"claim":true,"title":false},{"lines":["The apparatus according to claim 2 , wherein the denitrification-inducing aeration tank is divided into four stages to facilitate the mixing and the adjustment of dissolved oxygen amount and is fitted with a mixer at one end, where air feeding does not occur, to facilitate denitrification and subsequent denitrification."],"number":3,"annotation":false,"claim":true,"title":false},{"lines":["A method for treating wastewater comprising the following steps:
(a) equalizing a flow rate and an amount of wastewater having at least 10,000 mg/L of BOD in an equalization tank;
(b) carrying out solid-liquid separation of equalized wastewater from step (a);
(c) stripping ammonia selectively from the wastewater leaving the concentration of organic material unchanged;
(d) fermenting non-degradable organic material in the wastewater from step (c) and also fermenting sludge that is returned from step (i) below;
(e) carrying out Anammox reaction of ammonia in the wastewater with NO 2 —N in the sludge;
(f) activating soil microorganisms that are contained as a solid form in a biopond;
(g) feeding the activated microorganisms into a denitrification-inducing aeration tank with the wastewater from step (e);
(h) denitrificating the wastewater from step (g);
(i) carrying out a solid-liquid separation of the wastewater from the microorganisms to produce a precipitated sludge and a supernatant and returning a part of the precipitated sludge to step (d) above; and
(j) removing any residue from the supernatant from step (i) by aggregating them and effluenting the finally treated wastewater."],"number":4,"annotation":false,"claim":true,"title":false},{"lines":["An apparatus comprising the following elements:
(a) an equalization tank for equalizing a flow rate and concentration of wastewater that has originated from a source;
(b) a solid-liquid separator for adjusting concentrations of organic material and nitrogen;
(c) a stripping tank for selectively removing ammonia nitrogen while leaving the concentration of organic material in the wastewater unchanged;
(d) a fermenter for both fermenting organic material in the wastewater and for fermenting sludge that is returned from a sedimentation tank;
(e) an Anammox tank;
(f) a biopond that contains solidified soil microorganisms;
(g) a denitrification-inducing aeration tank for the degradation of organic material by microorganisms being activated and fed from the biopond into the aeration tank;
(h) a denitrification tank;
(i) a sedimentation tank for solid-liquid separation of microorganisms from the denitrified wastewater;
(j) an aggregation-sedimentation tank for aggregating and removing residual material from a supernatant obtained from said sedimentation tank; and
(k) a dewatering tank for reducing part or all of the water in a sludge discharged from said solid-liquid separator, anaerobic fermenter, sedimentation tank and aggregation-sedimentation tank."],"number":5,"annotation":false,"claim":true,"title":false},{"lines":["The apparatus according to claim 5 , wherein the denitrification-inducing aeration tank is divided into four stages and is fitted with a mixer at one end."],"number":6,"annotation":false,"claim":true,"title":false}]}},"filters":{"npl":[],"notNpl":[],"applicant":[],"notApplicant":[],"inventor":[],"notInventor":[],"owner":[],"notOwner":[],"tags":[],"dates":[],"types":[],"notTypes":[],"j":[],"notJ":[],"fj":[],"notFj":[],"classIpcr":[],"notClassIpcr":[],"classNat":[],"notClassNat":[],"classCpc":[],"notClassCpc":[],"so":[],"notSo":[],"sat":[]},"sequenceFilters":{"s":"SEQIDNO","d":"ASCENDING","p":0,"n":10,"sp":[],"si":[],"len":[],"t":[],"loc":[]}}