Garbage disposal has become a focus of attention in the community. In particular, the treatment of waste incineration has caused industry controversy. In addition to landfill, incineration, there are other ways to deal with it. Cement kiln co-disposal of domestic waste as a mature technology, deserves the attention of all parties. However, it is worth noting that cement kilns co-disposing domestic waste has advantages as well as disadvantages.

Which domestic garbage treatment technology is strong? Co-processing cement kiln coexistence pros and cons

Cement kiln co-disposal of domestic waste has some advantages, one is the disposal of high temperature, long residence time, the combustion process is full, easy to stabilize the incineration state, which can better absorb into the rubbish; second solid waste in the heavy metal ions, no waste discharge , Within the controllable range, cement product quality and production are not affected; Third, China has a huge cement production capacity, you can solve the problem of garbage pollution in a particular area to achieve energy-saving emission reduction.

Cement kiln co-disposal of waste advantages and disadvantages exist

However, there are still many problems existing in cement kiln co-disposal of domestic waste.

First, the classification of household waste is high. The secondary fuels used in the cement industry in the developed countries in Europe and the United States mainly come from waste tires, waste plastics, waste paper, waste oil, etc., which are generally collected and processed by specialized companies to supply the cement plants with stable finished products.

China's waste recovery system is independent of domestic waste treatment system. Most of the high-calorific value waste is utilized by renewable resources, and the remaining domestic waste classification work has just started. The mixed garbage collected has low calorific value, high moisture content, Complicated components, as the cement raw materials and fuel are not ideal, co-processing more difficult.

Second, the co-processing costs are high. Cement products business affected by the larger market, co-disposal of domestic waste will increase the land and investment in cement enterprises, increase product costs, affecting the normal production of cement products. At the same time, cement enterprises are far away from domestic garbage collection facilities and transport costs are high.

Third, the impact of cement pollution control and product quality. The developed countries in Europe and the United States have started to treat their domestic garbage as a fuel into the cement industry since the 1990s. However, whether this will cause new pollution to combustion or whether the impact on the quality of cement and concrete is always under discussion. China must attach great importance to the impact of household garbage on the pollution control and product quality of cement enterprises, and seriously study and adopt effective measures.

Fourthly, solid waste from cement kiln co-disposal lacks advantages over incineration and landfill technologies. For example, small-scale processing; higher project construction and operating costs; energy efficiency to be improved; immature technology, pollution control difficult.

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