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CN-121990691-A - Modified biological active bamboo charcoal filler for sewage treatment and preparation method thereof

CN121990691ACN 121990691 ACN121990691 ACN 121990691ACN-121990691-A

Abstract

The application relates to the technical field of sewage treatment, in particular to a modified biological active bamboo charcoal filler for sewage treatment and a preparation method thereof, wherein the preparation method of the modified biological active bamboo charcoal filler comprises the following steps of S1, adding nutritional powder into modified bamboo charcoal in a fluidization manner, and obtaining the modified bamboo charcoal loaded with the nutritional powder after fluidization is completed; S2, adding a mixed enzyme agent into the modified bamboo charcoal loaded with the nutrition powder, and performing vacuum pumping and drying to obtain a modified bioactive bamboo charcoal filler, wherein the modified bamboo charcoal is prepared by taking raw moso bamboos, cutting the raw moso bamboos into bamboo tubes with the length of 5-30cm, carbonizing the bamboo charcoal at high temperature to obtain the bamboo charcoal, spraying a hydrogen peroxide solution on the surface of the bamboo charcoal, and performing ultraviolet irradiation, washing and drying to obtain the modified bamboo charcoal, or soaking the bamboo charcoal in an acid solution or an alkali solution, washing and drying to obtain the modified bamboo charcoal, and has the advantages of improving the sewage treatment efficiency and prolonging the service life of the filler.

Inventors

  • LIN PENG

Assignees

  • 林鹏

Dates

Publication Date
20260508
Application Date
20260306

Claims (8)

  1. 1. The preparation method of the modified biological active bamboo charcoal filler for sewage treatment is characterized by comprising the following steps: s1, adding nutrition powder into modified bamboo charcoal in a fluidization mode, wherein the addition amount of the nutrition powder is 0.5-1.5% of the mass of the modified bamboo charcoal, and obtaining the modified bamboo charcoal loaded with the nutrition powder after fluidization is completed; s2, adding a mixed enzyme into the modified bamboo charcoal loaded with the nutrition powder, wherein the mass ratio of the mixed enzyme to the modified bamboo charcoal is 1 (1000-3000), spraying, vacuum pumping, and drying to obtain the modified bioactive bamboo charcoal filler; the preparation method of the modified bamboo charcoal comprises the following steps: s1, taking raw moso bamboo, cutting into bamboo tubes with the length of 5-30cm, and carbonizing at high temperature to obtain bamboo charcoal; s2, spraying a hydrogen peroxide solution on the surface of the bamboo charcoal, then irradiating for 15-24 hours under an ultraviolet lamp with the wavelength of 180-330nm, washing, drying, and repeating for 2-3 times to obtain modified bamboo charcoal; or soaking bamboo charcoal in acid solution or alkali solution for 48-120 hr, washing, and drying to obtain modified bamboo charcoal.
  2. 2. The preparation method of the modified biological activated bamboo charcoal filler for sewage treatment according to claim 1, wherein the nutritional powder comprises, by mass, 10-20% of brown sugar, 10-20% of peptone dry powder, 5-15% of wheat starch, 0.1-0.5% of sodium chloride, 0.01-0.3% of K 2 HPO 4 0.1-0.5%、Ca(NO 3 ) 2 , 0.03-0.07% of biotin, 3-5% of yeast, 7-11% of diatomite and the balance of corn starch.
  3. 3. The method for preparing modified bioactive bamboo charcoal filler for sewage treatment as claimed in claim 1, wherein the pH of the acid solution is 5.2-5.8.
  4. 4. The method for preparing modified bioactive bamboo charcoal filler for sewage treatment as claimed in claim 1, wherein the pH value of the alkaline solution is 7.2-7.8.
  5. 5. The method for preparing modified bioactive bamboo charcoal filler for sewage treatment as claimed in claim 2, wherein said nutritional powder further comprises 0.1-0.5% of penetrant by mass.
  6. 6. The method for preparing modified bioactive bamboo charcoal filler for sewage treatment as claimed in claim 5, wherein said penetrating agent is a mixture of polysorbate 80 and alkyl glycoside APG-0810.
  7. 7. The method for preparing the modified bioactive bamboo charcoal filler for sewage treatment according to claim 1, wherein the mixed enzyme agent comprises the following raw materials, by mass, 3-7% of protease, 4-8% of lipase, 17-23% of amylase, 2-4% of phospholipase, 13-17% of alpha-amylase, 0.5-1.5% of carboxymethyl cellulose and the balance of water.
  8. 8. A modified biological active bamboo charcoal filler for sewage treatment is characterized in that the filler is prepared by the preparation method of the modified biological active bamboo charcoal filler for sewage treatment in any one of claims 1-7.

Description

Modified biological active bamboo charcoal filler for sewage treatment and preparation method thereof Technical Field The application relates to the technical field of sewage treatment, in particular to a modified biological active bamboo charcoal filler for sewage treatment and a preparation method thereof. Background In recent years, tower type biofilters, biological rotating discs, biological contact oxidation methods and biological fluidized beds belonging to the biofilm method have been studied and used in a relatively large number. The biological membrane method is characterized in that a biological reaction tank is filled with filler, the surface and the inside of the filler are covered with biological membranes, the biological membranes are ecological systems composed of highly dense anaerobic bacteria, aerobic bacteria, facultative bacteria, fungi, protozoa, algae and the like, and organic pollutants in sewage are removed through the metabolism of microorganisms in the biological membranes and the food chain grading predation effect formed among the fillers, so that the sewage purification treatment process is achieved. Therefore, the formation, falling-off and propagation speeds and quality of the biofilm on the surface and in the filler directly influence the sewage treatment efficiency of the biofilm method. Therefore, the development of the filler which has high biomass loading, multiple types, bioactivity, long service life and reproducibility is a key point of wide application of the high-biomembrane process. Disclosure of Invention In order to improve the sewage treatment efficiency and prolong the service life of the filler, the application provides a modified biological active bamboo charcoal filler for sewage treatment and a preparation method thereof. In a first aspect, the application provides a preparation method of a modified bioactive bamboo charcoal filler for sewage treatment, which adopts the following technical scheme: a preparation method of modified biological active bamboo charcoal filler for sewage treatment comprises the following steps: s1, adding nutrition powder into modified bamboo charcoal in a fluidization mode, wherein the addition amount of the nutrition powder is 0.5-1.5% of the mass of the modified bamboo charcoal, and obtaining the modified bamboo charcoal loaded with the nutrition powder after fluidization is completed; s2, adding a mixed enzyme into the modified bamboo charcoal loaded with the nutrition powder, wherein the mass ratio of the mixed enzyme to the modified bamboo charcoal is 1 (1000-3000), spraying, vacuum pumping, and drying to obtain the modified bioactive bamboo charcoal filler; the preparation method of the modified bamboo charcoal comprises the following steps: s1, taking raw moso bamboo, cutting into bamboo tubes with the length of 5-30cm, and carbonizing at high temperature to obtain bamboo charcoal; s2, spraying a hydrogen peroxide solution on the surface of the bamboo charcoal, then irradiating for 15-24 hours under an ultraviolet lamp with the wavelength of 180-330nm, washing, drying, and repeating for 2-3 times to obtain modified bamboo charcoal; or soaking bamboo charcoal in acid solution or alkali solution for 48-120 hr, washing, and drying to obtain modified bamboo charcoal. According to the technical scheme, the bamboo charcoal is adopted as a filler matrix, the bamboo charcoal is of a natural hollow and porous structure, so that the bamboo charcoal has larger specific surface area, porosity and mechanical strength, a huge microorganism attaching space is provided, hydraulic flushing can be resisted, service life and water treatment efficiency are guaranteed, on the basis, the bamboo charcoal is modified, tiny crystals formed after sintering the bamboo charcoal can be effectively removed through hydrogen peroxide/ultraviolet light treatment or acid liquor or alkali liquor treatment, a reaming effect can be achieved, the porous structure of the bamboo charcoal is better exerted, the membrane hanging rate is improved, and in addition, nutrition powder originally required for microorganism growth can be provided through loading on the surface of the bamboo charcoal, and the membrane hanging efficiency is quickened and improved. Therefore, the specific surface area and the film forming rate are improved by modifying and reaming the bamboo charcoal, so that the sewage treatment efficiency can be improved. Preferably, the nutrition powder comprises the following raw materials, by mass, 10-20% of brown sugar, 10-20% of peptone dry powder, 5-15% of wheat starch, 0.1-0.5% of sodium chloride, 0.01-0.3% of K 2HPO4 0.1-0.5%、Ca(NO3)2, 0.03-0.07% of biotin, 3-5% of yeast, 7-11% of diatomite and the balance of corn starch. By adopting the technical scheme, the formula constructs a complete microorganism growth medium. Brown sugar and starch, which are main raw materials for providing energy and synthesizing cytoskeleton. The peptone provides organic