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JPS57147494A - Biological sewage treating agent - Google Patents

Biological sewage treating agent

Info

Publication number
JPS57147494A
JPS57147494A JP56034179A JP3417981A JPS57147494A JP S57147494 A JPS57147494 A JP S57147494A JP 56034179 A JP56034179 A JP 56034179A JP 3417981 A JP3417981 A JP 3417981A JP S57147494 A JPS57147494 A JP S57147494A
Authority
JP
Japan
Prior art keywords
fine
water
soil
pieces
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56034179A
Other languages
Japanese (ja)
Inventor
Nobuo Sakauchi
Hideyuki Yasumi
Masae Hirayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kureha Corp
Original Assignee
Kureha Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kureha Corp filed Critical Kureha Corp
Priority to JP56034179A priority Critical patent/JPS57147494A/en
Publication of JPS57147494A publication Critical patent/JPS57147494A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Biological Treatment Of Waste Water (AREA)

Abstract

PURPOSE: To obtain particles which are not collapsed easily in water as well as have good flowability by forming a treating agent used in fluidized bed type biological sewage treatment by granulating fine powdery soil by using foamed plastic fine pieces as a nucleus.
CONSTITUTION: 1W15pts.wt. foamed plastic fine pieces are wetted in an aqueous solution containing 3W10% water solutlbe high molecular substance and, by using said fine pieces as a nucleus, on the wt% basis, 99W85 of fine powdery soil to 1W15 formaed plastic pieces is added thereto and water is further added gradually to carry out granulation. After granulation, when the obtained particles are dried under a temp. condition of 50W120°C, particles which are not easily collapsed in water and has good flowability are obtained. As the foamed plastic, a general formaed plastic such as polystyrene or polyurethane is used and the fine powdery soil is one obtained by artifically grounding natural soil or soil mineral and the fine powder with a particle size of 500μ or less is used.
COPYRIGHT: (C)1982,JPO&Japio
JP56034179A 1981-03-10 1981-03-10 Biological sewage treating agent Pending JPS57147494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56034179A JPS57147494A (en) 1981-03-10 1981-03-10 Biological sewage treating agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56034179A JPS57147494A (en) 1981-03-10 1981-03-10 Biological sewage treating agent

Publications (1)

Publication Number Publication Date
JPS57147494A true JPS57147494A (en) 1982-09-11

Family

ID=12406975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56034179A Pending JPS57147494A (en) 1981-03-10 1981-03-10 Biological sewage treating agent

Country Status (1)

Country Link
JP (1) JPS57147494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637897A (en) * 1986-06-28 1988-01-13 Shimizu Constr Co Ltd Floatable granulated material and its preparation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS637897A (en) * 1986-06-28 1988-01-13 Shimizu Constr Co Ltd Floatable granulated material and its preparation
JPH0775711B2 (en) * 1986-06-28 1995-08-16 清水建設株式会社 Floating granules and method for producing the same

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