Spreading of dry matter fraction from separated liquid manure

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Junior Benson
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1 Spreading of dry matter fractions from separated liquid manure Senior scientist Krister Persson Forskningscenter Bygholm

2 Why worry about separated manure Reduction in area requirements Industrial treatment

3 DIAS / RCB - Bygholm Investigation of the possibilities of distribution of separated manure products. Spreadning must be done according to the international requirements given in the EN standard

4 During the project period the spreadability of 3 products with 3 different spreaders have been investigated

5 Fiberfraction from Fangel Biogasplant (L T) Decant centrifuge 33% dry matter Compost like

6 Fiberfraction from Green Farm Energy (H T) Decant centrifuge 33% dry matter Adhesive and coherent

7 Fiber pellets Fiber fraction from commercial sep. Unit made into 10 mm pellets 91% dry matter

8 3 spreaders Samson Flex

9 RKM Jumbo

10 Bredal K 65

11 Tests according to EN Manure Longitudinal distribution Transversal distribution

12 The spreader was placed on balances and during emptying the weigth was recorded 2 parametres were calculated

13 Longitudinal distribution 150 Flow, % Emptying time,% of total time RKM Fangel 2003

14 Longitudinal distribution 150 Flow, % RKM Fangel 2003

15 Variationskoefficient, % langsgående fordeling Longitudinal distribution Langsgående fordeling Langsgående fordeling Procent Procent Procent 0 Procent Bredal Fiber pellets 24,5 23,0 RKM Fangel ,9 26,6 GFE ,0 15,6 Samson Fangel ,8 20,6 GFE ,5 20,5 Requirement : Coefficient of Variation must below 40%

Procent 0 Procent Bredal Fiber pellets 24,5 23,0 RKM Fangel 2003 32,9 26,6 GFE 2004 20,0 15,6

16 Stretch within the tolerance zone

17 Stretch within the tolerance zone Stretch within tolerance zone, % Spreader Requirement Product Min 35 % Bredal Lime spreader RKM manure spreader Samson manure spreader Manure pellets Product from low technology plant Product from high technology plant Product from low technology plant Product from high technology plant 56,2 59,2 82,6 75,3 83,1

spreader Manure pellets Product from low technology plant Product from high technology

18 Transveral distribution

19 Bredal K65, Fiber pellets t/ha CV 12,8% Percent Width t/ha CV 13,0% Percent Width

28 30 32 Width 150 3 t/ha CV 13,0% Percent 100 50 0 32 30 28 28 30 32

20 RKM, Fiberpiller t/ha CV 14,3% Percent Width t/ha CV 9,8% Percent Width

32 Width 150 3 t/ha CV 9,8% Percent 100 50 0 32 30 28 26 24 32 Width

21 Samson, Fangel t/ha VK 7,8% Percent Width 30 t/ha VK 12,9% Percent Width

22 RKM, GFE t/ha CV 12,1% Percent Width 10 t/ha CV 18,0% Percent Width

23 Transversal distribution, CV % Transversal distribution, CV % % Fiber pellets Bredal 1 t/ha 24 m 12,6 3 t/ha 24 m 13,0 Samson 1 t/ha 12 m 25,7 3 t/ha 12 m 26,3 RKM 1 t/ha 12 m 14,3 3 t/ha 12 m 9,8 Requirement : Coefficient of Variations must be below 30%

24 Variationskoefficient for fordeling på tværs Transversal distribution, CV % % Fangel Samson 10 t/ha 12 m 7,8 30 t/ha 12 m 12,9 RKM 10 t/ha 12 m 12,6 30 t/ha 12 m 12,4 Requirement : Coefficient of Variations must be below 30%

25 Variationskoefficient for fordeling på tværs Transversal distribution, CV % % GFE Samson 3 t/ha 12 m 7,8 10 t/ha 12 m 18,3 RKM 3 t/ha 12 m 12,1 10 t/ha 12 m 18,0 Requirement : Coefficient of Variations must be below 30%

26 Conclusions It is possible to distribute the solid parts from separated manure in a way that satisfy the requirements -The requirements on the longitudinal distribution can generally be met (CV < 40 %) - The requirements on the transversal distribution can generally be met ( CV < 30 %)

Aarhus Universitet Faculty of Agricultural Sciences Engineering Centre Bygholm

Aarhus Universitet Faculty of Agricultural Sciences Engineering Centre Bygholm REPORT NO. 211-1 ON REQUESTED TEST Spreadability of different YARA products REQUESTED BY: YARA Danmark Kastelsvej DK-7 Fredericia