Environmental Engineering Reference
In-Depth Information
Table 5.7
Government investment in rural biogas development
Large and medium-sized
biogas project
Rural biogas
Government investment
(1,000 million Yuan)
Investment (1,000
million Yuan)
Amount of money
(10,000 Yuan)
Year
Households
Quantity
2001
1.30
165,424
1.24
17
680
2002
3.10
286,333
2.86
49
2,345
2003 10.30
1,033,248
10.16
24
1,360
2004 10.33
1,044,279
10.12
20
2,000
2005 10.30
1,046,381
10.12
10
1,730
2006 25.00
2,554,029
24.55
-
4,494
2007 23.29
2,377,271
23.04
882
2,498
2008 26.46
2,524,092
25.96
1,716
5,009
Source: Ren21 [
14
]
about 4,700. It is estimated that 40 million domestic household biogas can annually
replace 48 million tons of biogas wood and straw which is equivalent to 132 million
acres of forestland.
With a capacity to produce 15.4 billion cubic meters of methane every year, the
domestic household biogas can replace 11 million tons of standard coal and reduce
more than 2,800 t of carbon dioxide emissions [
22
].
5.2.3 Problems of Biomass Energy Development
Owing to low density, scattered disposition and seasonality of biomass energy,
large-scale and concentrated usage that contend with various restrictions from
biomass resources acquisition, transportation and storage, which add to numerous
difficulties.
Besides, since systematic evaluations of biomass energy resources have not been
organized and conducted in the country, basic data support lacks planning for
biomass energy development and it impact for on further development [
8
].
A large gap between China's biomass utilization technology and the interna-
tional standard level remains high [
26
]. Many key technology and equipment rely
on imports. The industry chain is not complete and the system is weak.
Independent innovations must be improved. Biomass energy belongs to the
typical distributed energy, so traditional energy management cannot be adapted.
The management system should be transformed.
The biomass energy sector is still in its primary stage, which is weak in its market
competitiveness and cannot match conventional energy. Preferential policies are
urgently needed.
