Preface
China is the largest producer of organic wastes in villages and towns in the world.
In accordance with data released by the Ministry of Environmental Protection of the
People’s Republic of China, the pollution from agricultural source accounts for
1/3*1/2 of the total pollution in China, so it has become an important source of
water, soil and air pollution in rural areas. The resourceful utilization of organic
wastes in villages and towns in China is challenged by the difficulties including the
lack of applicable technologies and equipment. Based on this, research and
development as well as optimization and upgrading of key technologies and
equipment, such as energy, fertilization, forage, and materialization are carried out,
so as to realize the unification of resource technologies and equipment. Aiming at
this, this book systematically introduces the research on technologies for differentiated resourceful utilization of organic wastes of villages and towns. Around the
main clue of the differentiated resourceful utilization of organic wastes in villages
and towns, this book focuses on general thinking of the identification of source
characteristics of organic wastes, integration of generic technologies, development
of key technologies and research on management modes.
In this book, we (1) introduced the current situation of organic wastes in villages
and towns in China and the necessity of Research on key technologies and practical
equipment for differentiated resourceful utilization of organic wastes, (2) gave some
high-efficient anaerobic fermentation technology including pre-treatment and
evaluation methods on fermenting materials and the energy they produced, as well
as the low-cost, energy-saving equipment, (3) proposed a series of biological aerobic treatment methods, including preparation of bacteria agent, method of humification, control of secondary pollution, quality evaluation of composting products,
research and development of composting equipment, etc, (4) also introduced the
development of the standard system for differentiated resourceful utilization of
organic wastes in villages and towns, So that readers not only understand the
treatment technology, but also understand its treatment standards and policies,
(5) finally provided some projects of rural waste treatment based on the policies,
standards and technical methods introduced in previous contents.
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