Method for preparing aqueous liquid fertilizer by comprehensively utilizing livestock and poultry biogas slurry
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A technology of aqueous solution and biogas slurry, applied in the direction of liquid fertilizer, application, nitrogen fertilizer, etc., can solve problems such as waste, achieve recycling, change fertilization methods, and benefit environmental protection
Inactive Publication Date: 2018-12-07
ANHUI SCI & TECH UNIV
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Problems solved by technology
Most of the biogas slurry is pig, cattle, and sheep urine; it contains a lot of COD, BOD, nitrogen, phosphorus, potassium, etc., which is a serious waste
Method used
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Embodiment 1
[0023] A method for preparing an aqueous fertilizer, comprising the preparation of an aqueous fertilizer base material and the preparation of an aqueous fertilizer finished product:
[0024] Among them, the preparation of the aqueous fertilizer base material is as follows: after the solid-liquid separation of the livestock and poultry breeding wastewater, the excrement of the livestock is introduced into the fermentation tank through the pipeline for anaerobic fermentation, and then the fermented biogas slurry is collected through the overflow pipe. The storage tank is treated with aeration and aerobic treatment, and finally flocculated, filtered, sterilized, and introduced into chelation digestive irrigation.
[0025] Among them, the preparation of the finished product of the aqueous fertilizer is as follows: the content of the component elements of the aqueous fertilizer base material is detected, and after the content of the component elements is obtained, according to the n...
Embodiment 2
[0027] The preparation method is the same as Example 1, the difference is: according to the nutritional requirements of different plants, different chemical elements are added to obtain different aqueous fertilizers, specifically:
[0028] A method for preparing an aqueous fertilizer, comprising the preparation of an aqueous fertilizer base material and the preparation of an aqueous fertilizer finished product:
[0029] Among them, the preparation of the aqueous fertilizer base material is as follows: after the solid-liquid separation of the livestock and poultry breeding wastewater, the excrement of the livestock is introduced into the fermentation tank through the pipeline for anaerobic fermentation, and then the fermented biogas slurry is collected through the overflow pipe. The storage tank is treated with aeration and aerobic treatment, and finally flocculated, filtered, and sterilized, and then introduced into chelation digestive irrigation;
[0030] Among them, the prep...
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Abstract
The invention discloses a method for preparing aqueous liquid fertilizer by comprehensively utilizing livestock and poultry biogas slurry. The method includes preparation of a base material of the aqueous liquid fertilizer, and preparation of a finished product of the aqueous solution fertilizer. The preparation of the base material of the aqueous liquid fertilizer includes the following steps: after solid-liquid separation is performed on livestock and poultry breeding wastewater, a filtrate is obtained by filtration and by chemical and physical reaction processes, and the filtrate is the base material of the aqueous liquid fertilizer; and the preparation of the finished product of the aqueous solution fertilizer includes the following steps: detection of the content of component elementsis performed on the processed base material to obtain the content of the component elements; and then according to requirements of nutrient elements of different plants, plant aqueous liquid fertilizer can be produced by adding different substances and required components. The base material of the aqueous liquid fertilizer contains a lot of beneficial elements; according to nutrient requirementsof different plants and soil testing formula technology, nutrient elements with different components are added to obtain the plant aqueous liquid fertilizer; and the fertilizer is applied to the plants. Batch production of the aqueous liquid fertilizer is achieved.
Description
technical field [0001] The invention belongs to the technical field of environmental protection of livestock and poultry breeding industry, and relates to a method for preparing aqueous fertilizer by utilizing biogas slurry of livestock and poultry. Background technique [0002] In recent years, with the adjustment of my country's agricultural structure and the advancement of agricultural industrialization, the large-scale and intensive livestock and poultry breeding industry has developed rapidly and has become an important part of my country's agricultural economy. It is also an effective way for the poor peasants to get rid of poverty and become rich. way. The annual wastewater discharge of livestock and poultry farming in my country exceeds 10 billion tons, far exceeding the total discharge of industrial wastewater and domestic wastewater in China. At present, there are farms of a certain scale in my country that have carried out livestock and poultry wastewater treatment...
Claims
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Application Information
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