press tech agri-press 600 solids separator performance test results

Transcription

AWM-01-01
PRESS TECH AGRI-PRESS 600 SOLIDS SEPARATOR PERFORMANCE TEST RESULTS USING
THE UNIVERSITY OF TENNESSEE TESTING PROTOCOL
Robert T. Burns and Lara B. Moody
The University of Tennessee
Biosystems Engineering & Environmental Science Dept.
P.O. Box 1071, Knoxville, TN 37901-1071
INTRODUCTION
Confined animal production systems utilizing hydraulic-flush manure collection and transport systems use
different methods of solids separation to achieve an effluent low enough in total solids to be recycled as
flush water. Mechanical solids separators provide one method of solids reduction for flush systems. The
performance of mechanical manure solids separators can vary dramatically with different total solids input
concentrations. To properly size and install mechanical manure solids separation units, the separators’
performance characteristics must be known for the manure slurry found at the farm in question. The results
of these performance tests provide information a planner can use to estimate the expected through-put of
material, the resulting mass of solids to be removed and the total solids (TS) content of the recovered solids
expected from a given manure slurry. This is important information when sizing process sumps and solids
storage areas; it is critical to selecting a unit that can be operated in the time frame desired by the producer.
The nutrient partitioning data can be used by nutrient management planners to estimate the mass of
nutrients remaining with the recovered solids.
In an effort to provide comparable performance data with a common basis for the selection of mechanical
separators, the Biosystems Engineering and Environmental Science Department at The University of
Tennessee has developed a standard testing protocol for mechanical manure solids separators. This protocol
is designed to provide consultants, engineers and producers with separator performance data across a range
of manure total solids input concentrations. The University of Tennessee Biosystems Engineering and
Environmental Science Department has the capability to provide field-scale performance testing of manure
solids separators with either dairy or swine manure slurries at two university experiment station locations.
The results of the separator performance testing are a comprehensive analysis of the unit, including; pressliquor flow rates over a range of influent total solids (TS) concentrations and the resulting press-cake
moisture content, dry-mass capture efficiency, and nutrient partitioning of total kjeldahl nitrogen (TKN),
total phosphorus (TP), soluble phosphorus (SP), and potassium (K) between the solids and liquid effluents
from the separator.
UNIT DESCRIPTION
This report presents the results from testing a PressTech Agri-Press 600 screw-press (Press Technology &
Manufacturing, Inc., Springfield, OH) preceded by a Bauer Hydro-sieve static screen (Springfield, OH).
The Agri-Press 600 screw-press had a 6-inch diameter continuous flight screw. Two screens were tested on
the Agri-Press, a 0.006” wedge-wire screen and a 0.125” round perforated screen. The Bauer Hydro-sieve
static screen used a 0.060" screen 28" in width and 50 " in length. The static-screen was used to pre-thicken
the input slurry fed to the screw-press. Testing was preformed on June 25 – 27, 2001 at The University of
Tennessee Dairy Experiment Station in Lewisburg, TN.
1
SEPARATOR TESTING
For the separator performance tests with dairy waste slurry, raw dairy manure and bedding were collected
and stored for 48 hours prior to testing. Recovered dairy manure solids are used as bedding material at the
UT Dairy Experiment Station were the testing was conducted. The manure and bedding mixture was
approximately 20% TS. Each performance test began with a 500 gal (1890 L) tank containing waste with
approximately 10% TS. To make 10% TS slurry, collected manure and bedding were mixed with dilution
water for 30 minutes using an electric paddle stirrer. The manure slurry was then pumped from the tank to
the separator system using an air driven diaphragm pump (Model #2150, Graco Husky, Minneapolis, MN).
During the testing, the manure slurry storage tank was agitated using a centrifugal wastewater pump
(Model #N267-F, Zoeller Pump Co., Louisville, KY). The Agri-Press unit input rate was limited by the
maximum flow-rate that the static-screen could process. All test runs with the Agri-Press were made with
the static-screen at full capacity. For this test, the Agri-Press 600 screw-press was operated with a screw
speed of 25 rpm. All test runs were made with 33 psi of pressure on the outlet cone. The pressure resulted
in a press cake with approximately 70% moisture content, which was the desired press-cake moisture
content for this test. If a drier press-cake is desired, the Agri-Press unit can be operated with cone outlet
pressures of up to 100 psi.
Samples were collected from the influent and effluent points of each unit. These included side-hill influent,
side-hill effluent liquor, side-hill effluent cake (same as screw-press influent), screw-press press-liquor, and
screw-press press-cake. Test duration at each slurry input TS concentration was based on the time required
to recover approximately 50 gal (190 L) of side-hill effluent liquor or press-liquor from the system.
Resulting press-cake and liquor volumes were weighed using a Tru-test load cell (Model #703, Tru-test,
Mineral Wells, TX). After testing the system at 10% TS, the manure slurry in the tank was diluted to
approximately 8% TS, and the system tested again. Subsequently, tests were performed with approximately
6, 4, 2 and 1% TS influents. Samples were analyzed for total and volatile solids using Standard Method
2540. G (Standard Methods, 1998), SP using QuikChem method 12-115-01-1-H (Lachat Instruments,
Milwaukee, WI), TP using QuikChem method 13-115-01-1-B (Lachat Instruments, Milwaukee, WI), TKN
using QuikChem method 13-107-06-2-D (Lachat Instruments, Milwaukee, WI).
RESULTS
Press-Tech provided a manure separation system for testing that utilized a static-screen pre-thickening unit
and an Agri-Press 600 screw-press unit. The results presented here are for the overall system performance,
not the performance of the screw-press alone. The system was tested with both a 0.006” wedge wire screen
and a 0.125" round perforated screen installed in the Agri-Press separator. The static-screen unit preceding
the Agri-Press was equipped with a 0.060" screen for all tests. Information concerning the performance of
the static-screen or screw-press only can be found in Appendices A & B of this report. Appendix A
provides the complete data set from the test. Appendix B provides graphs of the data set.
System Results with 0.006” wedge wire screen in Agri-Press Unit
System testing, while the Agri-Press was equipped with a 0.006" screen, was conducted using dairy manure
slurries with TS system input concentrations ranging from 1.2 to 8.5%. The press-liquor flow rate through
the separator system increased as influent TS concentration decreased (Figure 1). In this report, press-liquor
flow rate is the sum of the side-hill liquor and the screw-press liquor. For flow rates from each device, see
Appendix A. The press-liquor flow rate of 44.1 gpm occurred at an influent TS concentration of 1.2%. At a
slurry influent concentration of 8.5% TS, the system achieved a press-liquor flow rate of 6.4 gpm. The
screw-press maintained a constant press-cake moisture consistency throughout the test (Figure 1). The
average TS concentration of the press cake was approximately 30% (± 5%).
The dry-mass capture efficiency of the separator system remained fairly constant over the range of slurry
influent concentrations tested. The average dry-mass capture efficiency was approximately 32 % (± 8.5%)
(Figure 2). Dry-mass capture efficiency was calculated as follows:
2
Dry-mass capture efficiency (%) =
min (%TS in ) − m PL (%TS PL )
m (%TS PC )
× 100 = PC
× 100
min (%TS in )
min (%TS in )
Where min is mass influent, mPL is mass press-liquor and mPC is mass press-cake.
80%
40
60%
30
40%
20
20%
10
0
Press Cake TS
50
Press Liquor Flow Rate
(gpm)
100%
60
(gpm)
Press-Liquor Flow Rate
Press Cake TS
0%
0%
5%
Influent TS
Dry-Mass Capture Efficiency
60
100%
50
80%
40
60%
30
40%
20
20%
10
0
10%
0%
FIGURE 1. Press-Liquor Flow Rate (gpm) and
Press-cake Total Solids (TS, %) from the Side
Hill / Screw-press Separator System (0.006”
screen) as a Function of Influent TS (%)
Concentration.
2%
4% 6% 8%
Influent TS (%)
Dry-Mass Capture
Efficiency
0%
10% 12%
FIGURE 2. Dry-Mass Capture Efficiency by the
Side Hill / Screw-press System (0.006” screen)
as A Function of Influent Total Solids (%)
Concentration.
At an influent TS concentration of 8.5%, 11% of the influent manure mass was recovered in the press-cake,
on a wet-weight basis. However, 16.6% of the influent SP, 20.9% of the influent TP and 22.3% of the
influent TKN were recovered in the press-cake on a wet-weight basis (Figure 3). Because the percentage of
nutrients recovered in the press-cake was greater than the percentage of mass recovered in the press-cake,
nutrients were being partitioned into the press-cake. As the influent TS concentration decreases, the
previous statement is true for all but one case. At 5.2% influent TS, the percentage of recovered SP is
slightly less than the percentage of recovered manure mass. This data point may be attributed to sample
handling or analyses error. Percentage of influent constituent recovered in the press-cake was calculated as
follows:
Percentage in press cake =
Percentage in Press-Cake
Manure mass
m PC − constituent
× 100
min − constituent
SP
TP
TKN
50%
40%
30%
20%
10%
0%
8.5%
6.7%
5.2%
Influent TS
2.4%
1.2%
FIGURE 3. Nutrient Partitioning: Percentage of Influent
Constituent Recovered in the Press-Cake, on a Wet Basis.
3
System Results with 0.125” round perforated screen in Agri-Press Unit
While the screw-press contained the 0.125” screen, the system was tested with TS influent concentrations
ranging from 1.3 to 11.8%. The separator system press-liquor flow rate increased as influent TS
concentration decreased (Figure 4). The maximum press-liquor flow rate of 34.8 gpm occurred at an
influent TS concentration of 1.3%. At an influent concentration of 11.8% TS, the system achieved a pressliquor flow rate of 3.9 gpm. The system maintained a press-cake with a TS concentration of 34% (± 2.4%)
while the influent TS range was between 1.3 and 11% (Figure 4). However, at an influent TS of 11.8% the
press-cake TS dropped to 16.6%; this was likely the result of an unsatisfactory cake being built after the
machine purged during a previous test.
Generally, the dry-mass capture efficiency of the separator system increased with an increasing influent TS
concentration. With a 1.3% TS influent, the dry-mass capture efficiency was 18%, while at 11.8% TS
influent the dry-mass capture efficiency was 32% (Figure 5).
100.0%
50
80.0%
40
60.0%
30
40.0%
20
20.0%
10
0
0%
2%
4% 6% 8%
Influent TS
60
100%
50
80%
40
60%
30
40%
20
20%
10
0
0.0%
10% 12%
0%
FIGURE 4. Press-liquor Flow Rate (gpm) and
Press-cake Total Solids (TS, %) from the Side
Hill / Screw-press Separator System (0.125”
screen) as a Function of Influent TS (%)
Concentration.
Dry Mass Capture Efficiency
2%
4% 6% 8%
Influent TS (%)
Dry Mass Capture
Efficiency
60
Press-Liquor Flow Rate,
gpm
Press-Cake TS
Press Cake TS
(gpm)
Press-Liquor Flow rate
0%
10% 12%
FIGURE 5. Dry-Mass Capture Efficiency by the
Side Hill / Screw-press System (0.125” screen)
as a Function of Influent Total Solids (%)
Concentration.
When the influent TS concentration was 11.8%, SP and TKN were not preferentially partitioned into the
press cake. As indicated above, abnormalities in this run may have been the result of the screw-press
purging during a previous test. In all other data sets taken using the 0.125” screen, SP, TP and TKN were
preferentially partitioned into the press-cake, as shown in Figure 6.
Manure mass
SP
TP
TKN
50%
40%
30%
20%
10%
0%
11.8%
11.0%
4.8%
Influent TS
2.9%
1.3%
FIGURE 6. Nutrient Partitioning: Percentage of Influent
Constituent Recovered in the Press-Cake, on a Wet Basis.
4
CONCLUSIONS
The University of Tennessee testing protocol developed for mechanical manure solids separators was used
to quantify the performance of a manure solids separation system consisting of a Bauer Hydro-sieve static
screen followed by a PressTech Agri-Press 600, using both a 0.006” wedge wire screen and a 0.125” round
perforated screen. The 0.125" perforated screen produced higher press-liquor flow rates than did the 0.006”
wedge-wire screen with the exception of the lowest total solids (TS) influent (~ 1% TS). Press-liquor flow
rates for this system vary with influent TS concentration and screen size. The flow rates ranged from 3.9 to
44.1 gpm at influent TS concentrations of 11.8 and 1.2%, respectively. The 0.125” screen maintained a
higher TS concentration press cake than the 0.006” screen. The average press-cake TS concentration was
34% from the 0.125” screen and 30% from the 0.006” screen. The dry-mass capture efficiency was greater
and more consistent when the Agri-Press had the 0.006” screen in place; the average capture efficiency was
32% throughout the testing. When the 0.125” screen was in place the dry-mass capture efficiency varied
with influent TS concentration. At 1.3% TS influent, the dry-mass capture efficiency was 18%, while at
11.8% TS influent the dry-mass capture efficiency was 32% The Agri-Press preferentially partitioned
nutrients into the press cake using both screens. The percentages of nutrients recovered from the press-cake
during the tests were greater than the percentage of solids recovered in the press-cake.
VENDER CONTACT INFORMATION
Press Technology & Manufacturing
2300 Columbus Avenue
Springfield, OH 45503
Phone: 937-327-0755
Fax: 937-327-0756
www.presstechnology.com
REFERENCES
Standard Methods for the Examination of Waste and Wastewater Treatment, 20th Edition. 1998. Clesceri
L.S., A.E. Greenberg, A.D. Eaton eds. United Book Press Inc., Baltimore, Maryland.
Disclaimer Statement
Use of trade or brand names or companies in this publication is for clarity and information; it
does not imply approval of the product or the vendor to the exclusion of others that may be of
similar, suitable composition, nor does it guarantee or warrant the standard of the product.
A State Partner in the Cooperative Extension Service
The Agricultural Extension Service offers its programs to all eligible persons
regardless of race, color, age, national origin, sex or disability and is an Equal Opportunity Employer.
COOPERATIVE EXTENSION WORK IN AGRICULTURE AND HOME ECONOMICS
The University of Tennessee Institute of Agriculture, U.S. Department of Agriculture,
and county governments cooperating in furtherance of Acts of May 8 and June 30, 1914.
Agricultural Extension Service
Charles L. Norman, Dean
5
APPENDIX A
6
Wet Wt. mass in PC
dry mass
of eff.
wet basis Dry Wt. of Eff. capture eff.
(lb)
%
(lb)
%
Sample Identification
#
Screen Size
inches
11
16
21
26
31
Side Hill in
Side Hill in
Side Hill in
Side Hill in
Side Hill in
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
8.5%
6.7%
5.2%
2.4%
1.2%
8.5%
6.7%
5.2%
2.4%
1.2%
78.3%
77.1%
74.7%
82.6%
76.2%
186.51
322.74
558.00
502.70
472.68
13
17
22
27
32
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
8.5%
6.7%
5.2%
2.4%
1.2%
6.1%
4.2%
3.4%
1.9%
0.9%
82.1%
74.4%
76.2%
68.9%
83.3%
154.00
204.00
451.00
450.00
450.00
9.38
8.52
15.40
8.65
3.97
12
18
23
28
33
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
8.5%
6.7%
5.2%
2.4%
1.2%
12.0%
11.7%
11.8%
10.3%
8.7%
74.4%
84.3%
87.1%
89.5%
91.6%
32.51
118.74
107.00
52.70
22.68
3.89
13.90
12.64
5.44
1.97
14
19
24
29
34
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
8.5%
6.7%
5.2%
2.4%
1.2%
4.7%
3.6%
2.8%
2.0%
1.5%
68.0%
63.7%
70.5%
71.7%
71.9%
12.51
91.74
82.00
41.70
16.68
0.59
3.31
2.27
0.83
0.25
15
20
25
30
35
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
8.5%
6.7%
5.2%
2.4%
1.2%
28.7%
31.8%
27.7%
23.4%
36.7%
86.9%
88.3%
90.2%
92.7%
94.0%
20.00
27.00
25.00
11.00
6.00
5.74
8.60
6.92
2.58
2.20
Initial TS %TS
%VS
7
11%
8%
4%
2%
1%
15.86
21.77
28.76
11.84
5.67
36.22%
39.49%
24.06%
21.77%
38.84%
Vol of eff.
(gal)
Run time
(min)
Flow rate
(gpm)
22.36
38.70
66.91
60.28
56.68
3.10
3.73
4.18
2.05
1.27
7.21
10.37
16.01
29.40
44.63
18.47
24.46
54.08
53.96
53.96
3.10
3.73
4.18
2.05
1.27
5.96
6.56
12.94
26.32
42.49
1.50
11.00
9.83
5.00
2.00
3.10
3.73
4.18
2.05
1.27
0.48
2.95
2.35
2.44
1.57
System
Flow Rate
6.44
9.51
15.29
28.76
44.06
SP
TKP
TKN
mass % removed
g
in PC
conc.
mg/L
mass
g
% removed
in PC
conc.
mg/L
mass
g
%
removed
in PC
583
410
290
148
90
4936
6012
7343
3374
1924
1126
764
919
345
161
9532
11189
23275
7881
3449
20.9%
21.2%
10.0%
9.1%
12.3%
3320
2676
1589
860
263
28110
39215
40247
19620
5633
22.3%
22.7%
22.7%
13.4%
30.2%
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
527
331
318
141
88
3682
3062
6517
2877
1801
782
617
561
215
157
5465
5712
11487
4389
3214
2225
2073
1626
300
425
15556
19204
33290
6129
8690
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
550
442
397
393
268
812
2382
1931
940
275
934
1321
1043
799
697
1379
7124
5067
1912
718
2841
4811
2337
2870
1900
4194
25934
11351
6867
1956
14
19
24
29
34
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
573
137
327
136
140
325
569
1219
258
106
985
751
573
1219
265
560
3128
2133
2308
200
2447
3615
1775
850
268
1390
15054
6606
1610
203
15
20
25
30
35
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
903
1162
261
286
612
820
1425
297
143
167
2198
1932
2052
1438
1563
1996
2369
2329
718
426
6911
7249
8061
5258
6245
6275
8885
9149
2626
1701
#
Screen Size
inches
11
16
21
26
31
Side Hill in
Side Hill in
Side Hill in
Side Hill in
Side Hill in
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
13
17
22
27
32
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
12
18
23
28
33
conc.
mg/L
16.6%
23.7%
4.0%
4.2%
8.7%
8
#
Screen Size
inches
conc.
mg/L
K
mass
g
% rem
in PC
conc.
mg/L
NH3
mass
g
% removed
in PC
11
16
21
26
31
Side Hill in
Side Hill in
Side Hill in
Side Hill in
Side Hill in
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
2962
2016
1457
815
365
25077
29545
36911
18609
7838
10.0%
11.1%
6.2%
0.8%
3.2%
679
1650
424
265
111
5752
24177
10749
6044
2391
19.3%
7.8%
8.8%
5.0%
6.7%
13
17
22
27
32
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
3507
1531
2141
865
363
24519
14177
43837
17663
7420
929
596
573
231
129
6492
5517
11741
4729
2638
12
18
23
28
33
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
2498
2200
2040
1153
478
3687
11862
9912
2759
492
1042
942
733
346
517
1538
5079
3560
827
532
14
19
24
29
34
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
2696
967
1583
1001
519
1531
4028
5892
1896
393
1913
87
142
130
265
1087
361
530
245
200
15
20
25
30
35
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
0.006 wedgewire
2751
2675
2032
294
927
2498
3279
2306
147
252
1220
1531
836
601
587
1108
1877
949
300
160
9
#
Screen Size
inches
Initial TS
36
46
51
56
61
Side Hill in
Side Hill in
Side Hill in
Side Hill in
Side Hill in
0.0125
0.0125
0.0125
0.0125
0.0125
37
47
52
57
62
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
38
48
53
58
63
Wet wt. mass in PC
of eff. wet basis Dry Wt. of Eff.
(lb)
%
(lb)
%TS
%VS
11.8%
11.0%
4.8%
2.9%
1.3%
11.8%
11.0%
4.8%
2.9%
1.3%
76.8%
79.0%
79.9%
83.7%
80.7%
419.50
828.90
610.12
522.04
489.85
0.0125
0.0125
0.0125
0.0125
0.0125
11.8%
11.0%
4.8%
2.9%
1.3%
8.3%
4.8%
3.7%
2.3%
1.0%
73.5%
72.4%
73.6%
74.6%
58.5%
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.0125
0.0125
0.0125
0.0125
0.0125
11.8%
11.0%
4.8%
2.9%
1.3%
17.8%
13.9%
13.1%
12.0%
10.0%
39
49
54
59
64
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.0125
0.0125
0.0125
0.0125
0.0125
11.8%
11.0%
4.8%
2.9%
1.3%
40
50
55
60
65
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.0125
0.0125
0.0125
0.0125
0.0125
11.8%
11.0%
4.8%
2.9%
1.3%
Flow rate
(gpm)
49.39
91.37
29.33
15.34
6.25
50.30
99.39
73.16
62.59
58.74
10.00
6.05
2.37
2.08
1.68
5.03
16.43
30.87
30.09
34.96
115.00
468.00
430.00
465.00
466.00
9.57
22.52
15.89
10.87
4.77
13.79
56.12
51.56
55.76
55.88
10.00
6.05
2.37
2.08
1.68
1.38
9.28
21.75
26.81
33.26
81.1%
87.5%
87.2%
90.2%
92.5%
304.50
360.90
180.12
57.04
23.85
54.05
50.07
23.60
6.85
2.38
6.8%
4.6%
3.5%
2.0%
2.7%
70.0%
72.7%
92.9%
69.9%
77.2%
208.50
291.90
150.12
50.04
20.85
14.24
13.29
5.25
1.02
0.57
25.00
35.00
18.00
6.00
2.50
10.00
6.05
2.37
2.08
1.68
16.6%
30.9%
33.6%
34.6%
36.7%
80.5%
88.2%
89.7%
92.2%
93.6%
96.00
69.00
30.00
7.00
3.00
15.93
21.31
10.09
2.43
1.10
2.50
5.79
7.59
2.88
1.49
System
Flow Rate
3.88
15.06
29.35
29.69
34.75
10
23%
8%
5%
1%
1%
dry mass
capture eff. Vol of eff. Run Time
%
(gal)
(min)
32%
23%
34%
16%
18%
SP
mass % removed
g
in PC
conc.
mg/L
TKP
mass
g
% removed
in PC
conc.
mg/L
TKN
mass
g
% removed
in PC
672
590
298
137
55
12806
22209
8249
3239
1226
1230
836
642
250
112
23424
31449
17784
5925
2499
24.7%
20.3%
26.9%
20.7%
9.4%
4056
1861
832
604
248
77254
70022
23053
14326
5504
19.2%
27.2%
42.8%
16.3%
19.3%
0.0125
0.0125
0.0125
0.0125
0.0125
1699
523
297
213
62
8872
11119
5805
4502
1304
2313
680
561
332
147
12074
14459
10959
7017
3110
3626
1604
1556
489
211
18931
34081
30376
10325
4461
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.0125
0.0125
0.0125
0.0125
0.0125
654
346
346
315
264
9041
5662
2827
815
286
1397
1046
806
8055
520
19319
17141
6592
20860
563
4678
3466
2629
2353
1156
64675
56793
21499
6094
1252
39
49
54
59
64
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.0125
0.0125
0.0125
0.0125
0.0125
828
481
317
227
175
7838
6377
2161
515
166
1152
855
465
383
436
10906
11334
3171
869
412
3355
2578
943
1058
794
31758
34158
6428
2402
752
40
50
55
60
65
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.0125
0.0125
0.0125
0.0125
0.0125
586
879
891
765
881
2555
2752
1213
243
120
1327
2037
3512
3862
1720
5782
6383
4783
1227
234
3411
6070
7245
7352
7806
14868
19016
9868
2336
1063
#
Screen Size
inches
36
46
51
56
61
Side Hill in
Side Hill in
Side Hill in
Side Hill in
Side Hill in
0.0125
0.0125
0.0125
0.0125
0.0125
37
47
52
57
62
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
38
48
53
58
63
conc.
mg/L
19.4%
12.4%
14.7%
7.5%
9.8%
11
#
36
Side Hill in
46
Side Hill in
51
Side Hill in
56
Side Hill in
61
Side Hill in
Screen Size
inches
0.0125
0.0125
0.0125
0.0125
0.0125
conc.
mg/L
3839
2825
1389
70556
408
K
mass % removed
g
in PC
73122
7.5%
106306
6.1%
38465
6.2%
167221
0.0%
9073
1.5%
conc.
mg/L
1528
1149
108
325
51
NH3
mass
g
29104
43237
2996
7694
1133
37
47
52
57
62
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
Side Hill liquor
0.0125
0.0125
0.0125
0.0125
0.0125
3839
2332
1624
5517
292
20045
49554
31707
116476
6183
1528
665
384
89
117
7978
14123
7489
1868
2467
38
48
53
58
63
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
Side Hill cake
0.0125
0.0125
0.0125
0.0125
0.0125
3790
1581
1953
1802
495
52389
25898
15967
4666
536
2060
630
879
645
253
28482
10321
7189
1670
274
39
49
54
59
64
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
Screw Press liquor
0.0125
0.0125
0.0125
0.0125
0.0125
2566
2302
1708
1391
507
24291
30501
11641
3161
480
558
115
545
441
61
5283
1521
3711
1001
58
40
50
55
60
65
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
Screw Press cake
0.0125
0.0125
0.0125
0.0125
0.0125
1264
2068
1757
1471
988
5510
6478
2393
467
134
333
1053
600
450
543
1453
3300
817
143
74
12
% removed
in PC
5.0%
7.6%
27.3%
1.9%
6.5%
APPENDIX B
13
Percentage of Total Solids (TS) in Press Cake from
Bauer Side Hill and Agri-Press (0.006" screen)
60
100%
Press Cake TS
80%
40
60%
30
40%
20
20%
10
0
0%
2%
4%
6%
Influent TS
14
8%
10%
0%
12%
Press Cake TS
Press Liquor Flow Rate (gpm)
50
Percentage of Total Solids (TS) in Press Cake
from Bauer Side Hill and PressTech AgriPress (0.125" screen)
100.0%
60
Press-Liquor Flow rate
Press-Cake TS
80.0%
40
60.0%
30
40.0%
20
20.0%
10
0
0%
2%
4%
6%
Influent TS
15
8%
10%
0.0%
12%
Press Cake TS
50
Dry Mass Capture Efficiency by
Bauer Side Hill and PressTech Agri-Press (0.006" screen)
60
100%
50
80%
40
60%
30
40%
20
20%
10
0
0%
2%
4%
6%
Influent TS (%)
16
8%
10%
0%
12%
Dry Mass Capture Efficiency from
Bauer Side Hill and PressTech Agri-Press (0.125" screen)
60
Press-Liquor Flow Rate, gpm
50
80%
40
60%
30
40%
20
20%
10
0
0%
2%
4%
6%
Influent TS (%)
17
8%
10%
0%
12%
100%
Total Solids (TS) in Press Liquor vs. Influent with use of 0.006" Screen
Screw Press Liquor
Side Hill Liquor
9.0%
8.0%
Press Liquor TS
7.0%
6.0%
5.0%
4.0%
3.0%
2.0%
1.0%
0.0%
0.0%
2.0%
4.0%
6.0%
Influent TS
18
8.0%
10.0%
12.0%
Total Solids (TS) in Press Liquor vs. Influent with use of 0.125" Screen
Screw Press Liquor
Side Hill Liquor
9.0%
8.0%
Press Liquor TS
7.0%
6.0%
5.0%
4.0%
3.0%
2.0%
1.0%
0.0%
0.0%
2.0%
4.0%
6.0%
8.0%
Influent TS
19
10.0%
12.0%
14.0%
Nutrient Partitioning in Agri-Press Using 0.006" Screen:
Percentage of Influent Constituent in the Press-Cake
Manure mass
SP
TP
TKN
50%
45%
40%
35%
30%
25%
20%
15%
10%
5%
0%
8.5%
6.7%
5.2%
Influent TS
20
2.4%
1.2%
Nutrient Partitioning in Agri-Press Using 0.125" Screen:
Percentage of Influent Constituent in the Press-Cake
Manure mass
SP
TP
TKN
80%
70%
60%
50%
40%
30%
20%
10%
0%
11.8%
11.0%
4.8%
Influent TS
21
2.9%
1.3%

press tech agri-press 600 solids separator performance test results

Transcription

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