KR950008387A - High speed sedimentation method of sludge - Google Patents

High speed sedimentation method of sludge Download PDF

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Publication number
KR950008387A
KR950008387A KR1019930019319A KR930019319A KR950008387A KR 950008387 A KR950008387 A KR 950008387A KR 1019930019319 A KR1019930019319 A KR 1019930019319A KR 930019319 A KR930019319 A KR 930019319A KR 950008387 A KR950008387 A KR 950008387A
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South Korea
Prior art keywords
sludge
chitosan
tank
concentration
added
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KR1019930019319A
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Korean (ko)
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KR0123211B1 (en
Inventor
지해성
고종호
Original Assignee
정한균
두산건설 주식회사
성우경
두산기술원 연구조합
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Priority to KR1019930019319A priority Critical patent/KR0123211B1/en
Publication of KR950008387A publication Critical patent/KR950008387A/en
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Publication of KR0123211B1 publication Critical patent/KR0123211B1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Abstract

오수 및 폐수를 생물학적인 처리방법으로 처리하고, 상기 공정의 2차침전조에서 발생한 슬러지에 양이온성 키토산을 첨가하고, 상기 키토산이 첨가된 유출수를 침전 농축조에 투입하여 슬러지를 침전시키는 슬러지의 고속침강 농축방법은 슬러지를 신속하게 침강하면서 고농도로 농축시키므로써 슬러지의 농축침강 효율을 높이고, 아울러 농축된 슬러지를 형성하여 후속하는 혐기성 슬러지 소화공정에 투입하므로써 슬러지 처리가 효율적으로 실시된다.Treating sewage and wastewater by biological treatment, adding cationic chitosan to the sludge generated in the secondary sedimentation tank of the process, and feeding the chitosan-added effluent into the sedimentation tank to precipitate the sludge. Sludge treatment is efficiently carried out by increasing the sludge concentration and increasing the sedimentation efficiency of the sludge by rapidly settling the sludge, and concentrating the sludge into a subsequent anaerobic sludge digestion process.

또한 고속 침강된 슬러지는 침전 농축조에서 체류하는 시간이 짧아지게되어, 그에 따라 슬러지의 침전 농축에 필요한 침전 농축조의 설비의 축소가 가능하다.In addition, the high-speed sedimented sludge is shortened the residence time in the precipitation concentrate tank, it is possible to reduce the equipment of the precipitation concentrate tank required for the precipitation concentration of the sludge.

Description

슬러지의 고속침강 종축방법High speed sedimentation breeding method of sludge

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명을 이용한 폐수처리공정의 일실시예를 개략적으로 나타낸 공정도이고,1 is a process diagram schematically showing an embodiment of a wastewater treatment process using the present invention,

제2도는 본 발명의 실시예1 및 실시예2 그리고 비교예에 의하여 침강되는 슬러지의 부피를 시간에 따라 나타낸 그래프.2 is a graph showing the volume of the sludge sedimented by Examples 1 and 2 and Comparative Examples of the present invention over time.

Claims (9)

오수 및 폐수를 생물학적인 처리방법으로 처리하고, 상기 공정의 2차침전조에서 발생한 슬러지에 양이온성 키토산을 첨가하고, 상기 키토산이 첨가된 슬러지를 침전농축조에 투입하는, 공정들을 포함하는 슬러지의 고속침강 농축방법.Treating sewage and wastewater by biological treatment, adding cationic chitosan to the sludge generated in the secondary sedimentation tank of the process, and injecting the chitosan-added sludge into the sedimentation concentration tank. Concentration method. 제1항에 있어서, 상기한 키토산은 슬러지의 건조중량에 대하여 0.12∼15중량%를 첨가하는 슬러지의 고속침강 농축방법.The method of claim 1, wherein chitosan is added at 0.12 to 15% by weight based on the dry weight of the sludge. 제1항에 있어서, 상기한 키토산은 400,000∼500,000의 분자량을 갖는 것과 800,000∼1,000,000의 분자량을 갖는 키토산의 혼합물인 슬러지의 고속침강 농축방법.The method of claim 1, wherein the chitosan is a mixture of chitosan having a molecular weight of 400,000 to 500,000 and chitosan having a molecular weight of 800,000 to 1,000,000. 제3항에 있어서, 상기한 400,000∼500,000의 키토산과 800,000∼1,000,000의 키토산의 혼합비율은 400,000∼500,000:800,000∼1,000,000=1∼3:1인 슬러지의 고속침강 농축방법.The method of claim 3, wherein the mixing ratio of 400,000 to 500,000 chitosan and 800,000 to 1,000,000 chitosan is 400,000 to 500,000: 800,000 to 1,000,000 = 1 to 3: 1. 제1항에 있어서, 양이온성 키토산과 슬러지의 응집반응이 일어나는 응집반응조에서 상기한 슬러지는 60∼120초 동안 체류하는 슬러지의 고속침강 농축방법.The method of claim 1, wherein the sludge in the flocculation tank in which the flocculation reaction between the cationic chitosan and the sludge occurs is concentrated for 60 to 120 seconds. 제1항에 있어서, 상기한 양이온성 키토산이 첨가된 슬러지는 응집반응조에서 교반하는 공정을 더욱 포함하는 슬러지의 고속침강 농축방법.The method of claim 1, wherein the cationic chitosan-added sludge further comprises a step of stirring in a flocculation tank. 제6항에 있어서, 상기한 교반하는 공정은 1∼5mm의 플럭을 형성하는 공정인 슬러지의 고속침강 농축방법.The method of claim 6, wherein the stirring step is a step of forming a floc of 1 to 5 mm. 제6항에 있어서, 상기한 교반은 패들형 교반기에 의하여 250∼250rpm으로 교반하는 슬러지의 고속침강 농축방법.7. The method of claim 6, wherein the agitation is performed at a speed of 250 to 250 rpm with a paddle type stirrer. 제1항에 있어서, 침강농축된 슬러지를 혐기성 슬러지 소화하는 슬러지의 처리방법.The sludge treatment method of claim 1, wherein the precipitated sludge is digested with anaerobic sludge. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019930019319A 1993-09-22 1993-09-22 High speed sedimentation method of sludge KR0123211B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019930019319A KR0123211B1 (en) 1993-09-22 1993-09-22 High speed sedimentation method of sludge

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Application Number Priority Date Filing Date Title
KR1019930019319A KR0123211B1 (en) 1993-09-22 1993-09-22 High speed sedimentation method of sludge

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KR950008387A true KR950008387A (en) 1995-04-17
KR0123211B1 KR0123211B1 (en) 1997-11-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100489812B1 (en) * 2002-10-10 2005-05-17 주식회사 부강테크 Recovering method of humic acid from livestock manure waste using the chitosan as precipitation reagent

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100880990B1 (en) * 2007-09-14 2009-02-03 서정대 Method for coagulating sludge with use of chitosan and chitosan decomposition enzyme and manufacturing method for fertilizer
KR100880603B1 (en) * 2007-09-14 2009-01-30 주식회사 씨앤지 Method for coagulating sludge with use of chitosan and chitosan decomposition enzyme and manufacturing method for fertilizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100489812B1 (en) * 2002-10-10 2005-05-17 주식회사 부강테크 Recovering method of humic acid from livestock manure waste using the chitosan as precipitation reagent

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