A kind of pretreatment device and pretreatment method before pig manure recycling

Abstract

The invention discloses a preprocessing device and method for pig manure before pig manure recycling. The device mainly comprises a precipitation and filtering device, an electrolysis unit, a fermenting device and a membrane biological reactor which are connected through a first pipeline, a second pipeline and a third pipeline, wherein the precipitation and filtering device is provided with a filter plate, a temperature controller, a first pH regulator and a pressure pump and connected with a water storage tank through a water pipe, the electrolysis unit is provided with an electrolysis rod, a stirrer, a biological bacterium proportioning device and a second pH regulator are arranged in the fermenting device, the third pipeline is provided with a flow regulator, a membrane component is arranged in the membrane biological reactor, and the membrane biological reactor is externally connected with a liquid outlet pipeline.

Description

technical field [0001] The invention relates to the technical field of pig manure recycling, in particular to a device for pretreatment before recycling pig manure and a pretreatment method thereof. Background technique [0002] With the development of the pig breeding industry, the treatment of a large amount of pig manure produced every day has brought new problems to people. With the development of science and technology, the recycling and reuse of pig manure has become more and more common, such as making chemical fertilizers, swamp ponds In the rural areas of our country, many people will collect pig manure and apply it directly to the soil as chemical fertilizers. However, studies have shown that although manure is a good fertilizer and conducive to the good growth of crops, if recycled Feces are directly applied to the soil without treatment. A large amount of nitrogen, phosphorus, and antibiotics contained in the feces will change the composition balance of the soil,...

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Problems solved by technology

[0002] With the development of the pig breeding industry, the treatment of a large amount of pig manure produced every day has brought new problems to people. With the development of science and technology, the recycling and reuse of pig manure has become more and more common, such as making chemical fertilizers, swamp ponds In the rural areas of our country, many people will collect pig manure and apply it directly to the soil as chemical fertilizers. However, studies have shown that although manure is a good fertilizer and conducive to the good growth of crops, if recycled Feces are directly applied to the soil without treatment. A large amount of nitrogen, phosphorus, and antibiotics contained in the feces will change the composition balance of the soil, and even pollute the soil. It will pollute river water and affect aquatic organisms

[0003] Manure is a good natural fertilizer, but it is not the best way to use it directly. The manure should be pretreated before use to remove harmful substances in it, so that manure can truly become a natural fertilizer that is beneficial to the environment, but The existing technology is immature in the aspect of excrement recovery and treatment, which needs to be studied.

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