House refuse treatment method

Abstract

The invention provides a household garbage processing method, comprising the following processing steps which are technique process of sorting, high-temperature and high-pressure hydrolysis and hydrothermal oxidation of organic substances, composting with organic substances, fuel brick production with non-recoverable and combustible substances, building material production with inorganic substances, plastic grain production, recyclable substances recycling, waste gas processing, sewage water processing and thermal power supply, etc. The household garbage processing method of the invention hasthe advantages of occupying little land area and having short processing time, pollution avoidance, low running cost, effective processing of noxious gas, high product quality, high-efficiency and environmental protection, and can be widely used for the processing of household garbage in various regions.

Description

technical field [0001] The invention relates to a domestic garbage treatment method, in particular to a rapid, harmless, non-surplus, resource recycling and industrialized domestic garbage treatment technology. Background technique [0002] According to statistics, about 2 / 3 of the cities in our country are trapped in the predicament of garbage siege. The annual output of municipal solid waste in my country alone is nearly 150 million tons, most of which are stacked in the open air. It not only affects the urban landscape, but also pollutes the atmosphere, water and soil that are vital to our lives, and poses a great threat to the health of urban residents. Garbage has become a very difficult problem in the process of urban development and social progress. Moreover, with the continuous improvement of people's living standards, the amount of domestic garbage produced is increasing, the growth rate is getting faster and faster (increasing at a rate of 6% per year), and the co...

AI Technical Summary

Problems solved by technology

[0005] (1) Large area, short use time (generally about ten years), long occupation time (cannot be reused within 100 years);

[0006] (2) Landfilled garbage causes serious pollution to soil, groundwater, and the atmosphere, and its actual and potential hazards are constantly increasing

[0007] (3) Garbage landfills cause a serious waste of resources

[0010] (1) First of all, look at its reduction. On the surface, it seems that waste incineration has reduced by 50% to 60%, but in fact the remaining 40% to 50% of the slag still needs to be reprocessed, or it needs to be landfilled again approach, re-contaminating groundwater and soil;

[0011] (2) Let’s look at its resource utilization again, and it’s unnecessary to talk about direct incineration, because this method has not realized resource utilization at all, let alone industrialization, but has seriously wasted precious resources

Here we only talk about the recycling of waste incineration power generation. This technology comes from abroad and is relatively mature. However, after being introduced into my country, many places have to go to landfill because of high operating costs and government financial inability to afford it.

The main reason is that the garbage in our country has complex components, low calorific value, and high moisture, which makes the garbage incinerator unable to work normally.

Then if you want to work normally, you must add coal or inject oil, which will increase the operating cost virtually, making the input far greater than the output

However, if the organic matter with low calorific value and high moisture, which accounts for 50% to 60% of the total waste, is separated for composting and incinerated with high calorific value waste, it is not welcomed by farmers due to the poor quality of compost products and has no market prospect, resulting in organic matter. Secondary stacking pollution

[0012] (3) In addition, during the waste incineration process of incineration and incineration power generation technology, toxic gases released, such as dioxins, mercury vapor in batteries, etc., seriously pollute the atmosphere, and the operation cost of treating such toxic gases is very expensive. It does not conform to our national conditions at all

[0014] (1) The composting of organic matter takes a long time, usually three weeks to one month, and the accumulation of pollution is serious, and flies and mosquitoes breed, seriously polluting the surrounding environment and bringing great hidden dangers to local sanitation and epidemic prevention

[0015] (2) The degradation of organic matter is not complete, the treatment is not sufficient, and the residue will still cause garbage pollution

[0016] (3) Organic compost products have many impurities and cannot effectively separate harmful substances such as heavy metals. Long-term use of compost products will cause soil surface deposition, damage soil, and endanger crops

[0017] (4) During the composting process, most of the nitrogen nutrients are naturally released, and compounds such as phosphorus and potassium are naturally degraded, so the quality of the fertilizer is low, the majority of farmers are unwilling to pay attention, and the market prospect is slim

[0018] To sum up, my country's current domestic waste treatment technology is basically at a low level, and it is difficult to achieve harmless and resourceful waste treatment, let alone industrialization

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