KR20080045355A - Production methods of microbial products on use sewage with enhenced adsorption, flocculation and degradation effects - Google Patents

Abstract

A complex microbial agent for purifying wastewater and sewage is provided to show excellent treating efficiency of contaminants in the wastewater and sewage by absorbing, flocculating and degrading the contaminants at the same time and treat the wastewater and sewage stably by improving precipitation property, turbidity and color. A method for preparing a complex microbial agent for purifying wastewater and sewage with excellent absorption, flocculation and degradation effects comprises the steps of: (a) after culturing Bacillus subtilis, Pseudomonas aeruginosa, Corynebacterium spp, Acinetobacter spp, Pseudomonas putida, and Flavobacterium spp in a fermentor at a temperature of 28-33 deg.C under pH of 6.5-7.5, fixating it into a drying medium to dry it rapidly to have 10% of moisture and then pulverizing the dried material into particles with a size of 100 mesh; (b) mixing 20-35% of the pulverized cultured material with 10-20% of fine powdery loess; and (c) mixing the mixture obtained from the step(b) with 15-25% of degreased bran, 5-10% of calcium phosphate, 5-10% of calcium carbonate, and 1-2% of mineral using a super mixer.

Description

Production method of microbial products on use sewage with enhenced adsorption, flocculation and degradation effects.

The present invention relates to a microorganism agent for complex wastewater purification having excellent adsorption and flocculation effect and a method for preparing the same, and more particularly, to adsorption and flocculation promoting material and flocculation / by microorganisms and natural porous materials that rapidly decompose organic contaminants in wastewater. It is characterized by manufacturing a complex wastewater purification microbial agent that improves the efficiency of wastewater treatment by adsorbing, decomposing and agglutinating pollutants using decomposed microorganisms, thereby improving the efficiency of contaminant decomposition in wastewater and improving sedimentability, turbidity and color. The present invention relates to a microbial agent for complex wastewater purification, and a method for producing the same, having an excellent effect of adsorbing and coagulating decomposition, which has the advantage of improving the stable wastewater treatment.

In recent years, as pollution of rivers and groundwater by wastewater and wastewater becomes more serious, the necessity of increasing the treatment efficiency of wastewater treatment plants for water quality preservation is gradually increasing. In addition to industrial wastewater, household sewage, manure and livestock wastewater are another cause of accelerated water pollution. In addition, in manure, sewage, waste water, etc., not only the water quality is contaminated by the pollutants contained in the waste water, but also the treatment cost is lowered, resulting in higher cost and thus increased waste generation. In addition, the wastewater treatment process must be stable in terms of treatment efficiency (COD removal ability, SS, chromaticity, sedimentation), and it is necessary to increase treatment efficiency (additives, process operation, etc.) leading to a stable operation. Do. Chemical treatment methods using conventional chemicals in septic tanks, sewage and wastewater treatment plants cause other environmental pollution. Recently, biological treatment methods using microorganisms have been in the spotlight. Therefore, various microbial agents have been commercialized to enhance the efficiency of such biological wastewater treatment. 5. Wastewater Treatment The microbial agent is a probiotic used for the purpose of improving the efficiency of wastewater treatment by being administered to aeration tanks during biological wastewater treatment. Such prior arts are aimed at increasing wastewater treatment efficiency through the decomposition and additives of these microorganisms in Korean Patent Application No. 1982-0004790, Korean Patent Application No. 1992-0026349, and Korean Patent Application No. 1993-0025583. As a result, the mechanism is unclear and accordingly, the amplitude of the processing efficiency has a big problem.

SUMMARY OF THE INVENTION An object of the present invention is to provide a microorganism agent for complex wastewater purification and its manufacturing method which is excellent in adsorption and coagulation decomposition effect to reduce the discharge of pollutants by enhancing the treatment efficiency and increasing the adsorption and sedimentation in wastewater treatment.

The wastewater treatment microorganisms have priority on the ability of microorganisms to decompose pollutants, and the polysaccharides and condensates, metabolites that are produced during the growth and growth of microorganisms, adsorb and precipitate the pollutants and SS components in the wastewater. Do it.

The present inventors have tested various microorganisms used for wastewater treatment, Bacillus subtilis , Pseudomonas aeruginosa , Corynebacterium spp , Acinetobacter spp , Six kinds of Pseudomonas putida and Flavobacterium spp interact in a complex manner to decompose pollutants in wastewater, and polysaccharides and condensates, metabolites that are produced during microbial culture and growth. Invented a combination that serves to adsorb and precipitate suspended pollutants and SS components in wastewater. In addition, the inventors have found that organic contaminants dispersed or dissolved in waste water have a positive effect of promoting decomposition using microorganisms by adsorption using natural porous materials. At the same time, by inventing and adding a combination of substances that promote flocculation, the present invention invents a complex wastewater purification microorganism having excellent adsorption and agglomeration decomposition effect which stabilizes the microbial flocs in the aeration tank and improves the efficiency of the aeration tank in the wastewater treatment process, and a method of manufacturing the same. Was done.

The present invention will be described in detail as follows.

Complex wastewater purification microorganisms having excellent adsorption and coagulation decomposition effects of the present invention are six kinds of microorganisms: Bacillus subtilis , Pseudomonas aeruginosa , Corynebacterium spp , Acineto Acinetobacter spp , Pseudomonas putida and Flavobacterium spp were incubated in liquid, and then dried cultures were dried on a dry medium for stabilization, activated carbon with good adsorption capacity, and excellent coagulation performance. Fine powder loess, preparations containing calcium phosphate, calcium carbonate and minerals that aid in microbial activation;

The mixing ratio of each component of the microbial agent for complex wastewater purification, which is excellent in the adsorption and coagulation decomposition effect of the present invention, is 20 to 35% of 6 kinds of microbial culture, activated carbon 15 to 25%, fine loess powder 10 to 20%, degreasing Steel 15 to 25%, calcium phosphate 5 to 10%, calcium carbonate 5 to 10% and minerals 1 to 2%.

The microorganism for complex wastewater purification having excellent adsorption and coagulation decomposition effects of the present invention is prepared by the following method.

That first step is the microorganism of 6 species of Bacillus subtilis (Bacillus subtilis), Pseudomonas ah Lodge labor (Pseudomonas aeruginosa), Corynebacterium (Corynebacterium spp), Acinetobacter (Acinetobacter spp), Pseudomonas footage is (Pseudomonas putida ) and Flavobacterium spp were immobilized on a dry medium after incubation for 2 days at a culture temperature of 28-33 ° C. and pH 6.5-7.5 in a fermentor using the medium of Table 1 below. Then, the product was rapidly dried to a moisture content of about 10% and then crushed to a particle size of about 100 mesh with a grinder.

Table 1. Medium components for culture of microorganisms (g / l)

In the second process, the dried microorganism cultures and the activated carbon having excellent adsorption capacity and fine powder loess having excellent cohesive capacity are evenly mixed using a ribbon blender.

In the third process, the mixture and the skim steel, calcium phosphate, calcium carbonate and minerals are combined and dispersed and mixed in a supermixer and packaged as a product.

The product of the present invention prepared by the above manufacturing process has the following excellent efficacy when used in the wastewater treatment process.

First, the COD, BOD, and organic matters, which are the major pollutants in waste water, have high decomposition efficiency, which improves the efficiency of wastewater treatment, thereby preventing water pollution and ensuring the stability of wastewater treatment processes.

Secondly, the activated carbon added in the present invention serves to adsorb organic pollutants in the wastewater and at the same time contributes to the decomposition efficiency of the pollutants by being a carrier of six microorganisms applied to the present invention.

Third, the fine powder loess and degreasing steel added by the present invention increases the growth of microorganisms, inhibits the growth of fungi and filamentous fungi, and increases the flocculation of flocs to lower the treated water by lowering the SS of the treated water.

Fourth, calcium phosphate, calcium carbonate and minerals added to the present invention promote the growth of microorganisms to increase the treatment efficiency of pollutants in the wastewater, so that there is no dismantling of flocs even under overload or condition or abundant load in the aeration tank. It has a stable treatment process even in waste water.

Thus, the present invention is very useful industrially and convolutedly to increase the wastewater treatment efficiency and to effectively treat a large amount of wastewater in the shortest time.

The invention is explained in more detail by the following examples.

Example 1.

Wastewater from the leather factory wastewater treatment plant was introduced into the aeration tank using a microbial agent for complex wastewater purification with excellent adsorption and coagulation decomposition effects of the present invention and operated for 4 weeks, and the BOD and COD were compared with the existing treatment process. The treatment conditions here are as follows.

① Aeration tank capacity 500㎥ ② Aeration tank pH: 6.8 ～ 7.2 ③ Aeration tank MLSS 1,800 ～ 2,500 ④ Sludge transport rate 80% ⑤ Aeration tank temperature 28 ℃ ⑥ Addition amount of microbial agent for wastewater purification of the present invention: 30ppm / day

The experimental result table is shown in Table 2 below.

Table 2. Wastewater Treatment Efficiency Comparison

As shown in the above table, the removal efficiency of BOD and COD is 62.5∼67.2% when the microbial product is not treated, whereas 74 ~ 79.5% is used when the current commercially processed products are processed. In case of treatment by using the product, it is found that the wastewater treatment efficiency which reaches the treatment efficiency of 87.2 ~ 91.3% is much better.

Example 2.

The result of treatment in slaughterhouse waste water (BOD 1,520ppm, COD 720ppm) compared with other companies in the laboratory is as follows.

After filling the 5 liter beaker with 2 liters of slaughtered wastewater, aeration was performed. After 1g of microbial agent was added, the treatment was performed for 24 hours under the following treatment conditions, and supernatant was taken to measure BOD and COD. Is shown in Table 3 below.

Table 3. Comparison of slaughter wastewater treatment efficiency (Lab. Test)

As shown in the above table, the removal rate of BOD and COD is 77.1% for COD and 89.6% for BOD when the removal efficiency is treated with the H company, which is a commercially available product. In the case of treatment, the treatment efficiency was 89.6% and the BOD was 95.3%. In addition, when treated using the product of the present invention, the emergence of protozoa that adheres to the floc, and the growth of the microorganism is vigorous, the floc formation ability is good and the sedimentation is good.

Complex wastewater purification microorganisms having excellent adsorption and coagulation decomposition effects prepared according to the present invention are six microorganisms Bacillus subtilis , Pseudomonas aeruginosa , Corynebacterium spp , Acinetobacter spp , Pseudomonas putida , Flavobacterium spp , and dry culture rapidly dried on dry media for stabilization, activated carbon with good adsorption capacity, and excellent coagulation ability Formulations containing fine powder loess, calcium phosphate, calcium carbonate and minerals that help to activate microorganisms have the effect of stabilizing the wastewater treatment process with the decomposition of contaminants contained in the wastewater.

Claims (4)

Bacillus subtilis , Pseudomonas aeruginosa , Corynebacterium spp , Acinetobacter spp , Pseudomonas putida with excellent pollutant resolution of wastewater , Flavobacterium spp 6 microorganisms having excellent adsorption and coagulation decomposition effect, characterized in that it contains six microorganisms and a method for producing the same According to claim 1, 6 kinds of microorganisms contain active carbon with high adsorptive ability to improve waste water pollutant decomposition and adsorption coagulation, fine powder loess with good cohesive ability, calcium phosphate, calcium carbonate, skim steel and minerals A microorganism agent for complex wastewater purification having excellent adsorption and coagulation decomposition effects, and a method for producing the same. The mixing ratio of each component of the microorganism agent for complex wastewater purification, which is excellent in the adsorption and coagulation decomposition constituting the present invention, is 20 to 35% of the six microbial cultures, 15 to 25% activated carbon, 10 to 10 fine ocher powders. 20%, degreasing steel 15 to 25%, calcium phosphate 5 to 10%, calcium carbonate 5 to 10% and minerals 1 to 2%, characterized in that the microbial agent for complex wastewater purification excellent in the adsorption and coagulation decomposition effect and a method for producing the same. Bacillus subtilis , Pseudomonas aeruginosa , Corynebacterium spp , Acinetobacter spp , Pseudomonas putida with excellent pollutant resolution of wastewater , 6 microorganisms of Flavobacterium spp were incubated in Fermentor for 2 days at 28 ～ 33 ℃ and pH 6.5 ～ 7.5 and then immobilized in a dry medium. For complex wastewater purification with excellent adsorption and coagulation decomposition characteristics, characterized by containing a culture, which is dried and ground to a particle size of about 100 mesh with a mill, activated carbon, fine powder loess, calcium phosphate, calcium carbonate, skim steel and minerals. Microbial agent and its manufacturing method.