1. Treatment on Pig Slurries
Study of Integrated Planting and Raising System in China
Zhe Zhou and Guangyu Hu

2. Catalog Background and Problem Statement 1 2 Introduction of Solutions3
Evaluation of Solutions 4
Discussion 5
Application of Solutions

3. Background and Problem Statement
2018/11/29
Background and Problem Statement
Pig slurries
bring about dirty air
pollute the drinking water
soil environment is damaged by eutrophication.

4. Background and Problem Statement
2018/11/29
Background and Problem Statement
Recycling livestock slurries as biomass
Methane can be produced to generate electricity
CO2 emission decreases
Organic fertilizer can be produced

5. Introduction of Solutions
1, Composting-sale,
2, Direct application,
3, Composting & Digestion-application

6. Evaluation of Solutions
2018/11/29
Evaluation of Solutions
Three Environmental Impact Types
Global Warming Potential (CO2, CH4 and NOx)
Environmental acidification Potential (SO2 and NOx)
Eutrophication potential (N and P elements)

7. Evaluation of Solutions
2018/11/29
Evaluation of Solutions
Mode 1
Pollutant type
Collection
Composting
Transportation
Sewage processing
Total CO
0.068
0.241
3.32
3.63
NOx
0.406
0.602
34.5
35.5
CH4
46.5
0.0201
201
248
SO2
0.436
0.429
21.2
22.3
CO2
0.0252
325
237
2289
2851
NH3 —
14.9
Table. 1 Inventory for pollutant emission of mode 1 (kg/FU)
FU-Functional unit (90 tons pig slurries were processed per day)

8. Evaluation of Solutions
2018/11/29
Evaluation of Solutions
Mode 2
Pollutant type
Collection
Storage
Transportation
Field application
Total CO
0.0997 —
0.0981
0.198
NOx
0.422
0.114
0.419
13.6
14.6
CH4
0.163
46.4
0.164
8.01
54.7
SO2
0.627
0.626
2.16
3.41
CO2
67.1
278
67.4
43.8
457
NH3
14.9
17.3
32.2
NO3-N
39.1
PO43-
8.42
Table. 2 Inventory for pollutant emission of mode 2 (kg/FU)
FU-Functional unit (90 tons pig slurries were processed per day)

9. Biogas based electricity generation
2018/11/29
Evaluation of Solutions
Mode 3
Pollutant type
Collection
Composting
Biogas based electricity generation
Field application
Total
Transportation
Disinfection
Spray irrigation CO
0.0581
-1.24
0.0981
0.0794
0.171
NOx
7.47
9.43
-5.31
0.419
0.342
0.812
13.2
CH4
10.9
19.9
-2.08
0.164
0.133
0.307
29.3
SO2
0.372
-7.71
0.626
0.509
1.10
CO2
99.2
218
-830
67.4
54.8
119
NH3
10.7
13.8 —
0.0103
0.140
24.6
NO3-N
14.3
PO43-
3.26
Table. 3 Inventory for pollutant emission of mode 3 (kg/FU)
FU-Functional unit (90 tons pig slurries were processed per day)

10. Discussion Mode 3 is the best choice 2018/11/29
1, Chemical fertilizers are replaced by organic one,
pollutants due to production of them vanish
2, Fermentation produced energy (biogas and electricity) for farms
3, Processed biogas liquid has less pollutant content

11. Application of Solutions
Income of normal orchard
Quantity
Total price/¥
Remarks
Investment
Sewerage pump and high-pressure sprayer 1
600
¥1800 for first investment. ¥600 per year
Chemical fertilizer
5893
Pesticide
3921
Electricity
150kwh
300
Irrigation
Gasoline
400
Sprayer
Manpower
150
15000
Apr-Aug. 8h, ¥100/manpower
Income
Hybrid citrus
5462kg
32772
¥6/kg
Net Income
6658

12. Application of Solutions
Income of demonstration orchard
Quantity
Total price/¥
Remarks
Investment
Sewerage pump and high-pressure sprayer 1
600
¥1800 for first investment. ¥600 per year
Chemical fertilizer
2750
Pesticide
856
Electricity
410kwh
820
Irrigation
Gasoline
160
Sprayer
Manpower
253
25300
Apr-Aug. 8h, ¥100/manpower
Income
Hybrid citrus
7500kg
52500
¥6/kg
Net Income
22014

13. Application of Solutions
Economic benefits
Chemical fertilizer investment %
Pesticide investment %
Gasoline cost %
Manpower cost %
Electricity cost %
Fruit production %
Income %

14. Application of Solutions
Ecological benefits
1, Organic content of soil increases
the volume-weight of soil decreases, top soil becomes thicker and tilth is improved
2, Dosage of pesticide decreases
The amount of production increases and the quality of the fruit is improved
Ecological condition is improved

15. Sources 1, Pig farm figure. http://www.ntv.cn/special/150729/
2, Biogas digester and cartoon farm.
3, Global warming figure.
4, Acidification figure.
5, Eutrophication figure.

16. THANKS