Ultrasonic harmless recycling technology and equipment for sewage of farm

Abstract

The invention discloses ultrasonic harmless recycling technology and equipment for the sewage of a farm. The ultrasonic harmless recycling technology and equipment decompose and transform solid organics contained in livestock excrements and the sewage which are generated in the farm into organic manures and separate and purify the liquid sewage into reclaimed water for recycling by adopting multiple innovative technologies, i.e. an ultrasonic disintegration dispersion sterilization technology, a sedimentation siphoning solid-liquid separation technology, a biomass ingredient blending technology, an aerobic high-temperature fermentation composting technology, an ultrasonic air floatation separation and purification technology, and the like, and special technical equipment matched with the multiple innovative technologies, thereby successfully realizing the waste recycling of intensification livestock breeding, changing wastes into valuables, realizing the zero emission of pollutants and turning harm into good. The ultrasonic harmless recycling technology and equipment have the outstanding advantages of advanced technology, simple structure, reliable property, convenience for maintenance, easy operation, low energy consumption, little operating cost, and the like and can obtain multiple benefits of reducing pollutant emission, improving ecological environment, sufficiently utilizing resources, increasing operating incomes, reducing cost expenditure, and the like.

Description

technical field [0001] The invention relates to a technology for controlling environmental pollution, in particular to a technology for intensive farming [0002] Raw livestock and poultry manure and sewage for harmless and resourceful treatment of farm sewage ultrasonic harmless resource treatment technology and equipment. Background technique [0003] With the rapid development of economic construction and the continuous improvement of the living standards of urban and rural residents, my country's livestock and poultry breeding industry has achieved rapid growth, and gradually develops in the direction of scale and intensification; at the same time, the environmental pollution caused by the livestock and poultry breeding industry The problem is also growing dramatically and has a tendency to become more serious. [0004] According to the 2008 statistical data released by relevant information: there are about 22,300 pig farms with more than 1,000 heads, cattle farms with m...

AI Technical Summary

Problems solved by technology

[0008] The main problems of this treatment method are: (1), during the natural stacking and retting process of livestock and poultry manure, a large amount of malodorous substances can be produced, and the odor can freely diffuse and drift, seriously polluting the surrounding environment

(3) The organic fertilizer made by this natural stacking method cannot completely kill harmful bacteria, viruses and parasite eggs due to insufficient fermentation of organic matter and low fermentation temperature. It may pollute the soil after being applied to farmland; May also contaminate underground and surface water bodies after flushing or infiltration

[0011] Although this treatment method has made great progress compared with the previous method, the following problems still exist: (1), the relatively dry matter after separation is still processed by the stacking method, and the aforementioned foul smell pollutes the environment and mosquitoes and flies transmit diseases , The fertilizers made pollute the soil, water and other problems still exist

(2) Similarly, natural stacking and retting cannot be carried out all year round, and there is still the problem of livestock and poultry manure confluent with sewage in a considerable period of time each year; due to the limited load capacity of the sewage treatment device designed and installed in the farm, this kind of livestock and poultry manure and sewage It is difficult to meet the discharge standards for the high-concentration sewage that is combined with sewage; excessive discharge of sewage or direct discharge of sewage without treatment will cause very serious environmental pollution

With such a huge investment, ordinary farms will not be able to afford it due to their limited profits.

(2) Higher investment risk

Therefore, basic conditions such as user scale, concentration, and gas supply distance are difficult to meet the construction requirements of biogas project investment income

In addition, the source of raw materials for biogas projects depends on the livestock and poultry manure produced by the farm, and the scale of livestock and poultry breeding in the farm is very sensitive to market fluctuations or the impact of livestock and poultry epidemics. Once the number of livestock and poultry breeding in the farm is greatly reduced or closed down, The biogas project will immediately reduce production or even stop production, which will not only seriously affect the lives of users and cause social problems, but also the huge amount of money invested may be completely sunk

Based on the above reasons, although the construction of biogas projects to treat livestock and poultry manure and sewage has obvious environmental protection and social benefits, due to the huge investment in project construction, coupled with the high uncertainty and risk of income, breeding Enterprises themselves and investors will not be very enthusiastic about attracting investment. If there is no policy guidance for government investment, it will be very difficult to promote and apply

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