JPS5756752A - Measuring method for bod of compost - Google Patents

Measuring method for bod of compost

Info

Publication number
JPS5756752A
JPS5756752A JP13064780A JP13064780A JPS5756752A JP S5756752 A JPS5756752 A JP S5756752A JP 13064780 A JP13064780 A JP 13064780A JP 13064780 A JP13064780 A JP 13064780A JP S5756752 A JPS5756752 A JP S5756752A
Authority
JP
Japan
Prior art keywords
compost
bod
accurately
sample
added
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
JP13064780A
Other languages
Japanese (ja)
Inventor
Toshiaki Fujii
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.)
Ebara Corp
Original Assignee
Ebara 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 Ebara Corp filed Critical Ebara Corp
Priority to JP13064780A priority Critical patent/JPS5756752A/en
Publication of JPS5756752A publication Critical patent/JPS5756752A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/18—Water
    • G01N33/1806—Water biological or chemical oxygen demand (BOD or COD)

Abstract

PURPOSE:To determine rapidly and accurately the BOD (biological oxygen demand) of compost and to control reasonably the process of compost production, by measuring generated CO2 after mixing a compost with specified amount of water and adjusting pH within specified range. CONSTITUTION:A sample of compost is mixed with 0.5-10wt% water and pH is adjusted to 6.5-7.5pH by adding N/100-N/2 acid or alkali. In some cases, addition of buffer agent is allowable. Under certain circumstances, >=1 kinds of additives among thiourea, aryl thiourea methylene blue and ammonium salt is added to suppress the nitrification, or a chelating agent such as EDTA is used for inactivation of metal, and thereafter measurement of BOD is performed. When a sample of compost ferments sufficently, or a amount of existing bacteria is small, seeds are added to the primary fermentation products. Thus the measuring is carried out within a day, which requires about 5 days in usual way, and progress of fermentation of compost is observed rapidly and accurately, and control of process is performed reasonably.
JP13064780A 1980-09-22 1980-09-22 Measuring method for bod of compost Pending JPS5756752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13064780A JPS5756752A (en) 1980-09-22 1980-09-22 Measuring method for bod of compost

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13064780A JPS5756752A (en) 1980-09-22 1980-09-22 Measuring method for bod of compost

Publications (1)

Publication Number Publication Date
JPS5756752A true JPS5756752A (en) 1982-04-05

Family

ID=15039247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13064780A Pending JPS5756752A (en) 1980-09-22 1980-09-22 Measuring method for bod of compost

Country Status (1)

Country Link
JP (1) JPS5756752A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106290762A (en) * 2016-07-29 2017-01-04 无锡信大气象传感网科技有限公司 A kind of water quality detection reagent and preparation method thereof
US10335068B2 (en) 2008-07-03 2019-07-02 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10335068B2 (en) 2008-07-03 2019-07-02 Masimo Corporation Multi-stream data collection system for noninvasive measurement of blood constituents
CN106290762A (en) * 2016-07-29 2017-01-04 无锡信大气象传感网科技有限公司 A kind of water quality detection reagent and preparation method thereof

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