JPS5556899A - Treatment method for sludge - Google Patents

Treatment method for sludge

Info

Publication number
JPS5556899A
JPS5556899A JP13045178A JP13045178A JPS5556899A JP S5556899 A JPS5556899 A JP S5556899A JP 13045178 A JP13045178 A JP 13045178A JP 13045178 A JP13045178 A JP 13045178A JP S5556899 A JPS5556899 A JP S5556899A
Authority
JP
Japan
Prior art keywords
sludge
adsorbent
dewatered
treated
incinerated
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
JP13045178A
Other languages
Japanese (ja)
Inventor
Tetsuo Yamaguchi
Setsuo Saito
Norio Shimizu
Yoji Otahara
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP13045178A priority Critical patent/JPS5556899A/en
Publication of JPS5556899A publication Critical patent/JPS5556899A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce BOD concentration in liquid formed in the treatment of sludge by heating by the procedure in which biological sludge is treated by heating, then a combustible adsorbent is added to the sludge, and then the sludge is dewatered and incinerated.
CONSTITUTION: Sludge discharged from treatment plants using activated sludge method, etc., for organic waste waters is heat-treated at a liquid temperature of approx. 200°C and a pressure of approx. 15kg/cm2G, and then the heat-treated sludge is mixed with a combustible adsorbent, e.g., powdered active carbon, etc.), dewatered and then incinerated, where the amount of the adsorbent to add to the is 0.5W30wt%. The addition of the adsorbent to the sluge greatly lowers NOD concentration is supernatant liquor from dewatering, increases the dewatering efficiency of sludge due to its filtering aid effect, and also reduces the amount of heavy oil, etd., used in the incineration of dewatered sludge cake.
COPYRIGHT: (C)1980,JPO&Japio
JP13045178A 1978-10-25 1978-10-25 Treatment method for sludge Pending JPS5556899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13045178A JPS5556899A (en) 1978-10-25 1978-10-25 Treatment method for sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13045178A JPS5556899A (en) 1978-10-25 1978-10-25 Treatment method for sludge

Publications (1)

Publication Number Publication Date
JPS5556899A true JPS5556899A (en) 1980-04-26

Family

ID=15034541

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13045178A Pending JPS5556899A (en) 1978-10-25 1978-10-25 Treatment method for sludge

Country Status (1)

Country Link
JP (1) JPS5556899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015107484A (en) * 2013-12-03 2015-06-11 フナン ユニバーシティ オブ サイエンス アンド テクノロジーＨｕｎａｎ Ｕｎｉｖｅｒｓｉｔｙ ｏｆ Ｓｃｉｅｎｃｅ ａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Sludge dewatering conditioning agent and deep dewatering method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015107484A (en) * 2013-12-03 2015-06-11 フナン ユニバーシティ オブ サイエンス アンド テクノロジーＨｕｎａｎ Ｕｎｉｖｅｒｓｉｔｙ ｏｆ Ｓｃｉｅｎｃｅ ａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Sludge dewatering conditioning agent and deep dewatering method thereof

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