KR20200120481A - Loess fermentation strain composition for water purification and water purification method using the same - Google Patents

Abstract

The present invention is to purify the water quality of contaminated rivers, reservoirs, or freshwater lakes using a loess fermentation strain composition for water purification. The loess fermentation strain composition for water purification of the present invention includes 50 to 150 parts by weight of a liquefied strain mixed with 100 parts by weight of loess to produce a loess strain for water purification, and is fermented by putting the loess strain in a sealed container for 50 to 80 days at 30 to 35°C. In addition, the liquefied strain is mixed with 1 to 5 parts by weight of a Bacillus strain or 2 to 7 parts by weight of a strain of Paenibacillus in 100 parts by weight of water, and is cultured at 32 to 37°C for 24 to 48 hours. A water purification method using the loess fermentation strain composition for water purification of the present invention provides an effect of quickly purifying contaminated water in rivers or reservoirs and freshwater lakes at low cost.

Description

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The present invention relates to a water purification method using a composition of a fermented loess strain for water purification, and specifically, a strain is cultured in loess and fermented by fermentation to prepare a loess-fermented strain composition for water purification, and the composition is used in a reservoir, a freshwater lake, or a river. It relates to a method of purifying contaminated water.

In recent years, as human activities have diversified and industrial activities such as agriculture and livestock increase, livestock wastewater, agricultural contaminated water, domestic sewage and wastewater flow into rivers, reservoirs, and freshwater lakes, causing pollution of the water quality. Has become.

In order to reduce pollution of rivers, reservoirs, or freshwater lakes, the inflow of pollutants must be fundamentally blocked. If a river or reservoir is contaminated due to failure to block the pollutant source, water from the contaminated river must be artificially treated.

In order to purify the quality of water such as rivers, contaminated water must be purified by a physicochemical method, and such a contaminated water treatment process requires facilities such as advanced treatment facilities and can be costly. In addition, if the water quality of a freshwater lake or reservoir is contaminated, it is not easy to install a water purification facility.

Recently, various methods have been developed to treat contaminated water such as rivers, but the water quality environment is deteriorating because they are not easily treated. That is, efforts are being made to absorb and remove pollutants such as nitrogen, phosphorus, and heavy metals mixed in the contaminated water, or to use an eco-friendly water purification method using a water purification plant, but it has not been greatly effective.

Korean Patent Publication No. 10-11005408 (2015. 10. 02)

The present invention is to solve the above problems, and to purify the water quality of contaminated rivers, reservoirs, or freshwater lakes using a loess fermentation strain composition.

The present invention aims to purify the water quality of contaminated freshwater lakes or bottom sedimentary soil of a reservoir by using the loess fermentation strain composition for water purification.

In addition, the present invention provides a method for purifying primary water quality and secondary sediment at low cost by using a loess fermentation strain composition for water purification in purifying contaminated water such as reservoirs and sediments such as freshwater lakes.

In order to achieve the above object, the composition of the loess fermentation strain for water purification according to the present invention is prepared by mixing 50 to 150 parts by weight of the liquefied strain to 100 parts by weight of loess to prepare a loess strain for water purification, and the loess strain is put in a sealed container. And fermented, the fermentation temperature is 30 to 37 ℃ fermentation for 50 to 80 days.

The liquefied strain was mixed with 1 to 5 parts by weight of Bacillus sp. strain or 2 to 7 parts by weight of Paenibacillus strain in 100 parts by weight of water, and cultured at 32 to 37°C for 24 to 48 hours. Do.

The loess-fermented strain composition for water purification has a size of 0.005 to 0.03 mm of loess in the loess-fermented strain composition aged before being added to contaminated water.

The loess fermentation strain composition for water purification is mixed in 1L of contaminated water at a ratio of 10 to 100g of the powdered loess fermentation strain composition to purify contaminated water quality of a reservoir, river or freshwater lake.

The water purification method using the loess fermentation strain composition for water purification of the present invention provides the effect of quickly purifying contaminated water in rivers or reservoirs and freshwater lakes at low cost. In addition, it provides the effect of purifying the contamination of sedimentary soil deposited in rivers or reservoirs and freshwater lakes. In other words, the loess used in the loess fermentation strain composition softly softens the loess inside under the influence of the activated strain, so that the contact area with contaminated water is increased, so that the water purification effect is excellent, and it has the effect of purifying even sediment. , Sediment can be used as a fertilizer or a soil conditioner for agricultural land, providing an effect of increasing income.

In addition, when it is put into contaminated water with a severe odor, it is easy to remove odor due to the activity of the loess fermentation strain, and thus there is an effect of quickly purifying the contaminated area.

1 is a photograph comparing before and after treatment of contaminated water using the loess fermentation strain composition of the present invention.

The present invention relates to a water purification method using the loess fermentation strain composition.

Hereinafter, the present invention will be described in detail with reference to the drawings and examples. 1 is a picture comparing the quality of purified water and contaminated water using the loess fermentation strain composition of the present invention.

The loess fermentation strain composition for water purification of the present invention is prepared by mixing 50 to 150 parts by weight of the liquefied strain with 100 parts by weight of powdered loess in a size of 0.005 to 0.03 mm to prepare a loess strain for water purification, and the loess strain in a sealed container. Put in and ferment. Conditions for fermenting the loess strain in the sealed container are fermented and aged at a temperature of 30 to 37° C. for 50 to 80 days to prepare a loess fermented strain composition.

When the loess fermentation strain composition is added to contaminated water, it is preferable to mix the powdered loess fermentation strain composition in 1L of contaminated water in a ratio of 10 to 100 g. When mixing the loess fermentation strain composition with the contaminated water, when 1 to 2 parts by weight of cellulose is further mixed, purification of contaminated water can be promoted, and when the cellulose is added, the water purification efficiency is further improved by 10-20%. .

The liquefied strain is a strain cultured at 32 to 40°C for 24 to 48 hours by mixing 1 to 5 parts by weight of Bacillus strain and/or 2 to 7 parts by weight of the genus Paenibacillus strain to 100 parts by weight of water Use. The strain nutrients such as glucose, fructose, sucrose, and amino acids are mixed in the water in which the strain is cultured so that the strain can be easily reproduced and grown, and the strain nutrients are mixed in a ratio of 5 to 10 parts by weight to 100 parts by weight of water. It is desirable. When the nutrient of the strain is mixed in more than 10 parts by weight, the strain is excessively propagated initially, and when the nutrient is mixed in less than 5 parts by weight, competition for nutrients intensifies and the cultivation of the strain is slow. In addition, the strain of the genus Bacillus mixed with 100 parts by weight of water is Bacillus tropicus, and the strains of the genus Panibacillus are Paenibacillus riograndensis and Paenibacillus dongdonensis KUDC0114 strains Use.

Bacillus strain mixed with 100 parts by weight of the water: Panibacillus strain is preferably mixed in a ratio of 1: 1.5, it is also possible to use each.

In addition, the strain used in 100 parts by weight of water may further include 1 to 3 parts by weight of Bacillus koriensi DSM16467 and 1 to 4 parts by weight of Breviacillus nitrificans DA2. .

<Example>

In Figure 1, the photo on the right ([2]) is the quality of water contaminated with domestic wastewater, etc., and 5 parts by weight of the loess fermentation strain composition is mixed with 100 parts by weight of the contaminated water quality of [2], and then 2 days have elapsed. The picture of the purified water is the picture on the left ([1]).

That is, in the case of treating the loess fermentation strain composition in the contaminated water under the above conditions, 80-95% of the contaminants were removed, the supernatant from which the contaminated material was removed was harmless, and the BOD was 0.5-1.0 mg/L. Was below the standard value.

In addition, COD decreased significantly to 1.0~2.0mg/L, total nitrogen (T-N) 2.5mg/L, and total phosphorus (T-N) 1.7mg/L.

In addition, loess provides excellent effects in the removal of Cochlodinium among red tide organisms. That is, when 1 to 10 parts by weight of the loess fermentation strain composition was added to 100 parts by weight of water contaminated with coclodinium, the effect of removing red tide organisms was removed by 50 to 90%, and as the mixing ratio of the loess fermented strain composition increased, effective.

After 30 minutes of spraying the loess fermentation strain composition, 75-85% of Cochlodinium red tide organisms were removed, the water temperature and pH were not changed, dissolved oxygen, chemical oxygen demand and the concentration of chlorophyll a decreased, and suspended solids increased. Among eutrophication factors, dissolved inorganic phosphorus did not change in concentration before and after application, whereas dissolved inorganic nitrogen was slightly decreased after application compared to before application. The loess fermentation strain composition is effective in removing red tide organisms when sprayed at a ratio of 5 to 10 parts by weight, and contaminated water quality is also greatly improved.

Claims (2)

In the loess fermentation strain composition for water purification,
The loess fermentation strain composition for water purification is prepared by mixing 50 to 150 parts by weight of the liquefied strain to 100 parts by weight of powdered loess in a size of 0.005 to 0.03 mm to prepare a loess strain for water purification,
The loess fermentation strain is put into a sealed container and fermented at 30 to 35° C. for 50 to 80 days to prepare a loess fermented strain composition,
The liquefied strain is a mixture of 1 to 5 parts by weight of Bacillus tropicus and 2 to 7 parts by weight of a strain of the genus Paenibacillus in 100 parts by weight of water in which the nutrients of the strain are mixed, and at 32 to 37°C, 24 to A strain cultured for 48 hours is used, but as nutrients of the strain, glucose, fructose, sucrose, and amino acids are mixed in a ratio of 5 to 10 parts by weight,
The strain of the genus Panibacillus is used as Panibacillus riograndensis or Paenibacillus dongdonensis KUDC0114,
When treating contaminated water using the water purification loess fermentation strain composition, 1L of the contaminated water is treated by mixing 10 to 100 g of the loess fermentation strain composition for water purification, but when the loess fermentation strain composition is mixed with the contaminated water, cellulose 1 to 2 parts by weight of the loess fermentation strain composition for water purification, characterized in that further mixing and treating
The method of claim 1,
The liquefied strain is Bacillus koriensi (Bacillus koriensi DSM16467) 1 to 3 parts by weight and Breviacillus nitrificans (Breviacillus nitrificans DA2) 1 to 4 parts by weight further comprising a cultured loess fermentation strain for water purification Composition

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