Method for producing vegetalitas fulvic acid/potassium sulfate concentrated solution/vegetalitas organic bacterial manure by utilizing alcohol biologic wastewater

Abstract

The invention provides a method for producing vegetalitas fulvic acid / potassium sulfate concentrated solution / vegetalitas organic bacterial manure by utilizing alcohol biologic wastewater. The method comprises the following steps of: cooling, participating and filtering the alcohol biologic wastewater and removing potassium out of the alcohol biologic wastewater by using zeolite to obtain a potassium-removed liquid, subsequently carrying out absorption treatment on the obtained potassium-removed liquid by using a large-pore type absorption resin so that fulvic acid is absorbed onto the resin; eluting the absorption saturated resin by using an ethanol solution, carrying out vacuum concentration, spraying, freezing and drying treatment on the elution solution so as to produce high-purity vegetal fulvic acid, wherein the zeolite which is saturated through absorption in the potassium removing procedure is eluted by using an ammonium sulfate solution, the eluted potassium-enriched liquid is subjected to ammonia still, concentration and cooling so as to prepare a potassium sulfate concentrated solution; and the organic waste liquid of the resin absorption procedure is mixed with sediment, filter residue and sugar waste residue of the participation and filtering procedures, is fermented by using special fermentation bacteria, and is subjected to pelletizing and drying treatment, and special functional bacteria are added so as to prepare the vegetal organic bacterial manure. By utilizing the method, the treatment problem of alcohol biologic wastewater and sugar waste residue, which always bothers sugar plants, is solved.

Description

technical field [0001] The invention relates to a method for producing plant-based fulvic acid by using alcohol biological wastewater, and belongs to the technical fields of environmental protection, waste resource utilization and organic fertilizer production. Background technique [0002] Alcohol biological wastewater is a typical high-concentration organic wastewater produced in the process of fermenting and producing alcohol, using molasses, a by-product of sugar factory sugar production, as raw material. Its discharge temperature is as high as 105°C~106°C; Carbohydrates, fats, proteins, cellulose and other organic matter, if discharged directly without treatment, will destroy the ecological balance of the environment and cause serious pollution. Therefore, alcohol biological wastewater has become a national focus on strictly controlling pollution sources. [0003] The characteristics of general alcohol biological wastewater are: (1) The concentration of organic polluta...

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Problems solved by technology

Based on the above characteristics of alcoholic biological wastewater, its treatment is difficult. The general treatment methods are agricultural irrigation after bacterial fermentation (such as photosynthetic bacteria), biochemical method, anaerobic-aerobic method, anaerobic fermentation to produce biogas, Oxidation pond method, concentrated combustion method, etc., the above treatment methods have the following disadvantages: first, the treatment is difficult to meet the emission standards allowed by the state; second, the operation cost of the treatment facilities is expensive after the completion of the treatment; third, it is easy to cause secondary pollution after treatment

Fourth, it is difficult to recover investment in governance

[0004]Based on the above-mentioned defects in traditional treatment methods, in recent years, a method for resource utilization of alcoholic biological wastewater has been developed, mainly through cooling, conditioning, and concentration of alcoholic biological wastewater Dried directly to make solid fulvic acid products, this method does not separate a large amount of non-fulvic acid insolubles and high content of potassium in alcoholic biological wastewater, but directly makes products through concentration and spray drying, resulting in products containing a large amount of Impurities, the content of the active ingredient fulvic acid can only reach 20%~35%, the material utilization rate is low, and the product application range is relatively small; at the same time, a large amount of potassium resources in the alcohol biological wastewater have not been effectively utilized, resulting in a waste of potassium resources. Also did not solve the problem of resource utilization of sugar factory waste residue

In addition, most of the equipment for the production of fulvic acid and the concentration and spray drying of organic fertilizers that have been built in several sugar factories cannot operate normally, and phenomena such as wall sticking and carbonization are common, and the equipment consumes high energy consumption.

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