Agitation of Digesters - Revision history

Ranisha at 10:58, 11 November 2014

2014-11-11T10:58:55Z

Ranisha: /* Further Information */

2014-11-11T10:14:50Z

Further Information

Wiki Gardener at 10:13, 13 October 2014

2014-10-13T10:13:50Z

Ranisha at 11:28, 16 July 2014

2014-07-16T11:28:00Z

Show changes

Ranisha: /* References */

2014-03-18T12:29:54Z

References

Katharina Wiedemann at 11:26, 22 October 2012

2012-10-22T11:26:35Z

Wiki Gardener at 15:49, 30 August 2012

2012-08-30T15:49:39Z

Wiki Gardener at 15:49, 30 August 2012

2012-08-30T15:49:07Z

Show changes

Michel andre at 15:19, 21 February 2011

2011-02-21T15:19:23Z

Michel andre at 10:08, 9 February 2010

2010-02-09T10:08:09Z

← Older revision		Revision as of 10:58, 11 November 2014
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		+	[[Portal:Biogas\|►Back to Biogas Portal]]

	= Overview<br/> =		= Overview<br/> =

@@ Line 150: / Line 150: @@
 *[[Portal:Biogas|Biogas Portal on energypedia]]
 *[[Types of Biogas Digesters and Plants|Types of Biogas Digesters and Plants]]<br/>
+*[[Parts_of_a_Biogas_Plant|Parts of a Biogas Plant]]

@@ Line 1: / Line 1: @@
-== Overview<br/> ==
+= Overview<br/> =
 <u>The term 'agitation' subsumes different ways of homogenising the substrate or mixing it with water and co-substrate:</u>
 *Mixing and homogenizing the substrate in the mixing chamber
-*Agitation inside the [[Types_of_Biogas_Digesters_and_Plants|digester]]
+*Agitation inside the [[Types of Biogas Digesters and Plants|digester]]
 *Poking through the in- and outlet pipes (small scale plants)
@@ Line 25: / Line 25: @@
 <br/>
-{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
+{| cellspacing="0" cellpadding="0" border="0" class="IMGcenter"
 |-
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 | [[File:Mixdevice.jpg|498px|RTENOTITLE]]<small class="IMGLEGEND">'''Photo<ref name="Kraemer">Kraemer</ref>: Mixing device in an agricultural digester under construction'''</small><br/>
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 |}
-== Mixing Methods<br/> ==
+= Mixing Methods<br/> =
 <u>Simple mixing methods have been installed mainly in developing countries:</u>
@@ Line 50: / Line 50: @@
 <br/>
-{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
+{| cellspacing="0" cellpadding="0" border="0" class="IMGcenter"
 |-
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 | [[File:Mixfixdome.gif|550px|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Mixing of substrate through inherent flow in fixed-dome plants'''</small><br/>
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 |}
@@ Line 71: / Line 71: @@
 <br/>
-{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
+{| cellspacing="0" cellpadding="0" border="0" class="IMGcenter"
 |-
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 | [[File:Mixpaddle.gif|550px|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Mechanical paddle rotor'''</small><br/>
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 |}
-{| class="IMGright" align="right" border="0" cellpadding="10" style="width: 350px;"
+{| cellpadding="10" border="0" align="right" style="width: 350px" class="IMGright"
 |-
 | [[File:Missubmerged.gif|350px|RTENOTITLE]] <small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Submerged motor with rotor stirring'''</small><br/>
@@ Line 90: / Line 90: @@
 A sealed, submerged electric engine directly drives a rotor. The rotor mixes the substrate by creating a strong current. These stirring devices can usually be adjusted in height and in angle.
 <br/>
@@ Line 109: / Line 99: @@
 <br/>
-{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
+{| cellspacing="0" cellpadding="0" border="0" class="IMGcenter"
 |-
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 | [[File:Mixshaft.gif|550px|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Shaft-driven rotor'''</small><br/>
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 |}
@@ Line 126: / Line 116: @@
 <br/>
-{| class="IMGright" align="right" border="0" cellpadding="10" style="width: 330px;"
+{| cellpadding="10" border="0" align="right" style="width: 330px" class="IMGright"
 |-
 | [[File:Mixhydraulic.gif|350px|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Hydraulic mixing'''</small><br/>
@@ Line 134: / Line 124: @@
 With a strong pump the whole substrate can be put in motion, provided the intake and outlet of the pump are placed in a way that corresponds with the digester shape. These pumps are often placed in a central position to cater for other tasks.
 <br/>
@@ Line 147: / Line 133: @@
 <br/>
-{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
+{| cellspacing="0" cellpadding="0" border="0" class="IMGcenter"
 |-
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 | [[File:Mixinjection.gif|550px|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Mixing through injection of biogas'''</small><br/>
-| style="width: 45%;" | <br/>
+| style="width: 45%" | <br/>
 |}
@@ Line 160: / Line 146: @@
 <br/>
-= Further Reading =
+= Further Information =
-== References<br/> ==
+= References<br/> =
 <references />
 [[Category:Biogas]]

@@ Line 160: / Line 160: @@
 Hydraulic mixing by injecting biogas should not be used if the formation of swimming layers is a prevailing problem. Gas bubbles attach themselves to larger fibrous particles and lift them upwards, thus speeding up the formation of a swimming layer. Chopping up the substrate by means of chopper pumps or chopper rotors can only partly solve this problem.
@@ Line 166: / Line 167: @@
 <references />
 [[Category:Biogas]]

@@ Line 26: / Line 26: @@
-{| class="IMGcenter" cellpadding="0" cellspacing="0" border="0"
+{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
 |-
 | width="45%" | <br/>
@@ Line 52: / Line 52: @@
-{| class="IMGcenter" cellpadding="0" cellspacing="0" border="0"
+{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
 |-
 | width="45%" | <br/>
@@ Line 73: / Line 73: @@
-{| class="IMGcenter" cellpadding="0" cellspacing="0" border="0"
+{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
 |-
 | width="45%" | <br/>
@@ Line 80: / Line 80: @@
 |}
-{| class="IMGright" cellpadding="10" align="right" border="0" width="350"
+{| class="IMGright" align="right" border="0" cellpadding="10" width="350"
 |-
-| &nbsp;[[File:Missubmerged.gif|RTENOTITLE]] <small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Submerged motor with rotor stirring'''</small>&lt;small class="IMGSOURCE"</small&gt;<br/>
+| &nbsp;[[File:Missubmerged.gif|RTENOTITLE]] <small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Submerged motor with rotor stirring'''</small><br/>
 |}
 === Submerged Motor with Rotor Stirring<br/> ===
 A sealed, submerged electric engine directly drives a rotor. The rotor mixes the substrate by creating a strong current. These stirring devices can usually be adjusted in height and in angle.
@@ Line 95: / Line 109: @@
 The mode of operation of a shaft-driven rotor is comparable to that of a submerged engine with rotor, only that the rotor is driven via shaft by an engine or by hand. The shaft should be movable in height and in angle to allow a mixing throughout the digester. The shaft should be long enough to reach both swimming and sinking layers.
-{| class="IMGcenter" cellpadding="0" cellspacing="0" border="0"
 |-
 | width="45%" | <br/>
-| &nbsp; [[File:Mixshaft.gif|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Shaft-driven rotor'''</small>&lt;small class="IMGSOURCE"</small&gt;<br/>
+| &nbsp; [[File:Mixshaft.gif|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Shaft-driven rotor'''</small><br/>
 | width="45%" | <br/>
 |}
@@ Line 111: / Line 127: @@
-{| class="IMGright" cellpadding="10" align="right" border="0" width="350"
 |-
-| &nbsp; [[File:Mixhydraulic.gif|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Hydraulic mixing'''</small>&lt;small class="IMGSOURCE"</small&gt;<br/>
+| &nbsp; [[File:Mixhydraulic.gif|RTENOTITLE]]<small class="IMGLEGEND">'''Picture<ref name="TBW">TBW</ref>: Hydraulic mixing'''</small><br/>
 |}
@@ Line 119: / Line 137: @@
 With a strong pump the whole substrate can be put in motion, provided the intake and outlet of the pump are placed in a way that corresponds with the digester shape. These pumps are often placed in a central position to cater for other tasks.
@@ Line 128: / Line 150: @@
-{| class="IMGcenter" cellpadding="0" cellspacing="0" border="0"
+{| class="IMGcenter" border="0" cellpadding="0" cellspacing="0"
 |-
 | width="45%" | <br/>
@@ Line 135: / Line 157: @@
 |}
-Hydraulic mixing by injecting biogas should not be used if the formation of swimming layers is a prevailing problem. Gas bubbles attach themselves to larger fibrous particles and lift them upwards, thus speeding up the formation of a swimming layer. Chopping up the substrate by means of chopper pumps or chopper rotors can only partly solve this problem. .

@@ Line 105: / Line 105: @@
 |}
 Hydraulic mixing by injecting biogas should not be used if the formation of swimming layers is a prevailing problem. Gas bubbles attach themselves to larger fibrous particles and lift them upwards, thus speeding up the formation of a swimming layer. Chopping up the substrate by means of chopper pumps or chopper rotors can only partly solve this problem. .<br>
- [[Construction of a Biogas Plant|Back to "construction"]]
 [[Category:Biogas]]