1. Production and characteristics of municipal refuse in China.
In the past 10 years, the amount of MSW in China has increased greatly. Chinese City Environmental Sanitation Association to provide the data show that China’s per capita annual garbage production capacity of 440kg， the national city garbage annual yield reached 150 million tons, and the annual growth rate of 10% to 8% to the calendar year, garbage stock has more than 6 million ton, about 2/3 of the city into a garbage Siege predicament.
The main sources of municipal solid waste are road cleaning, cleaning garbage, unit, and residential area of domestic waste, commercial waste, some industrial waste and construction, renovation waste. The main characteristics of MSW in our country are the increase of organic matter, the increase of combustible substance, the increase of recyclable materials, and the increasing of the use value. The variety of garbage, especially electronic waste, such as TV, computer, mobile phone, audio and other products is becoming a big problem in our country
2. Present situation of urban domestic waste pollution in China
Garbage dumps a large number of ammonia, sulfide and other harmful gases released, serious pollution of the atmosphere and the living environment of the city.
Serious polluted water. Garbage is not only a large number of pathogenic microorganism, acid and alkaline organic pollutants will be generated in the process of pilling up corruption, and will be dissolved out of the heavy metal in the waste, the formation of organic substances, heavy metals and pathogenic microorganisms as one of the three sources of pollution, serious pollution, serious pollution of the rain leachate will cause surface water and groundwater.
Biological pollution. There are a lot of garbage and waste treatment of microorganism, often mosquitoes, flies and cockroaches and mice breeds, which inevitably endanger human health.
Garbage explosion occurred. With the continuous improvement of the composition of organic matter in the city and the change from the open-air pilling up to the concentration o the stack, only the use of a simple cover is easy to cause methane anaerobic environment, flammable and explosive.
Encroach on land. According to prelim, in 2003 the country’s 668 cities have been surrounded by garbage 2/3, the national waste deposit covers an area of about 800 thousand acres.
More than 60% of urban living garbage is mainly produced by the residents of the area after the organic waste generated by the two pollution, that is the growing number of organic waste is increasing the source of urban living garbage.
3. Urban domestic garbage treatment method in China
Our city life garbage processing is mainly landfill, incineration and composting treatment method, which is the main way of landfill, the total processing capacity of 70%, the harm is not achieved harmless treatment, environmental damage, environmental pollution.
Followed by high temperature composting, accounting for more than 20%, little incineration. Processing capacity is small with low processing capacity. Mixed collection is still the main. Some of the small and medium-sized cities still use the direct dumping of waste and other simple way to deal with the landfill, about 50% of the city’s garbage discharged directly to the outside world.
4. Qingdao Yushengyuan Environmental Technology Co. Ltd. advantages on waste processing.
Whether the landfill or incineration, are fearless of resources waste, how to carry out the treatment and recovery of effective use of the garbage collection, reduce the amount of garbage and processing equipment, reduce processing costs, reduce the consumption of land resources, to ensure environmental protection, to avoid the crowd around the injury, make full use of waste energy waste that has become one of the hot issues at all levels of government and the ordinary people’s attention.
Qingdao Yushengyuan Environmental Protection Technology Co., Ltd., starting from the actual situation, with the development of the market, based on the weaknesses and expert, research, and through scientific and technological research, developed and launched a unique waste energy environmental protection continuous distillation equipment, developed the city garbage “fast and harmless, non residual, resource recycling processing technology and industrialization”.
The technology after three years of research and practice, a new generation of production line is used, according to plant design, garden-planning three-dimensional layout, centralized control, computer management, visual monitoring, closed material transfer, fully purified gas emissions, solid waste and wastewater to achieve zero emissions, to achieve cleaner production, in the garbage, out of the products, the indicators have reached the national standards.