JPS5469251A - Method of cleaning and dehydrating screening residual - Google Patents
Method of cleaning and dehydrating screening residualInfo
- Publication number
- JPS5469251A JPS5469251A JP13706477A JP13706477A JPS5469251A JP S5469251 A JPS5469251 A JP S5469251A JP 13706477 A JP13706477 A JP 13706477A JP 13706477 A JP13706477 A JP 13706477A JP S5469251 A JPS5469251 A JP S5469251A
- Authority
- JP
- Japan
- Prior art keywords
- residual
- screening
- water
- dehydrating
- cleaning
- 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
Links
Landscapes
- Treatment Of Sludge (AREA)
Abstract
PURPOSE: To provide a method of cleaning and dehydrating screening residual discharged from sewage-treatment plants or the like, which comprises the steps of pressurizing the residual of screening, crushing and dehydrating organic matters, then repeating washing of the same with water while keeping the screening residual under unpressurized condition, and at last dehydrating the same under pressure.
CONSTITUTION: At first, screening residual is put into press 1 from hopper 2, and it is pressurized therein by compressing means 4, whereby water contained in the screening residual is removed and sludge, unbroken excrement and other aqueous organic substances contained in the screening residual are broken into pieces. At the time of dehydration, organic substances and others thus crushed are discharged from outlet 3 together with water. Then, the residual is washed with water while keeping the same under unpressurized condition and ejecting water from nozzle 5. The above process of pressurization and dehydration is repeated until a required condition can be obtained, and at last it is dehydrated under pressure. Then, cover 7 is opened to discharge the residual thus washed and dehydrated to the outside of the apparatus.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13706477A JPS5469251A (en) | 1977-11-14 | 1977-11-14 | Method of cleaning and dehydrating screening residual |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13706477A JPS5469251A (en) | 1977-11-14 | 1977-11-14 | Method of cleaning and dehydrating screening residual |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5469251A true JPS5469251A (en) | 1979-06-04 |
Family
ID=15190038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13706477A Pending JPS5469251A (en) | 1977-11-14 | 1977-11-14 | Method of cleaning and dehydrating screening residual |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5469251A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4888069A (en) * | 1972-02-28 | 1973-11-19 |
-
1977
- 1977-11-14 JP JP13706477A patent/JPS5469251A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4888069A (en) * | 1972-02-28 | 1973-11-19 |
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