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Method for treating domestic wastewater with silicon aluminum ceramic porous material immobilized microorganism

A technology for immobilizing microorganisms and porous materials, applied in biological water/sewage treatment, chemical instruments and methods, immobilized on or in inorganic carriers, etc., can solve problems such as unsatisfactory mass transfer performance, and achieve high concentration and High activity, low operating cost, enhanced treatment effect

Inactive Publication Date: 2017-05-31
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic carriers have the advantages of high mechanical strength, long life, acid and alkali resistance, etc., but the mass transfer performance is not ideal

Method used

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  • Method for treating domestic wastewater with silicon aluminum ceramic porous material immobilized microorganism
  • Method for treating domestic wastewater with silicon aluminum ceramic porous material immobilized microorganism
  • Method for treating domestic wastewater with silicon aluminum ceramic porous material immobilized microorganism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Step 1: Take the middle layer soil of a well-run and stable domestic sewage treatment underground infiltration system, dilute it with sterile water, shake to dissolve, let stand, and obtain bacterial suspension II;

[0026] Step 2: use the dilution plate coating method to isolate the strains, apply the second bacterial suspension on the common solid medium, observe the growth of the strains, and perform plate streaking and purification on a single colony, and obtain 11 different strains in total; The chemical composition of ordinary solid medium is: beef extract 5.0g, peptone 10.0g, sodium chloride 5.0g, agar 18g, distilled water 1L;

[0027] Step 3: Put the 11 different bacterial strains obtained in step 2 into artificially configured simulated domestic sewage with an access rate of 5%, treat the simulated domestic sewage, and draw the growth curve of the bacterial strain according to the OD600 of the bacterial liquid. When the growth rate is the fastest, the COD and N...

Embodiment 2

[0033] Step 1: Take the middle layer soil of a well-run and stable domestic sewage treatment underground infiltration system, dilute it with sterile water, shake to dissolve, let stand, and obtain bacterial suspension II;

[0034] Step 2: use the dilution plate coating method to isolate the strains, apply the second bacterial suspension on the common solid medium, observe the growth of the strains, and perform plate streaking and purification on a single colony, and obtain 11 different strains in total; The chemical composition of ordinary solid medium is: beef extract 5.0g, peptone 10.0g, sodium chloride 5.0g, agar 18g, distilled water 1L;

[0035] Step 3: Put the 11 different bacterial strains obtained in step 2 into the artificially configured simulated domestic sewage with an insertion amount of 5%, treat the simulated domestic sewage, and draw the growth curve of the bacterial strain according to the OD600 of the bacterial liquid. The growth rate is the fastest at ~48h, a...

Embodiment 3

[0041] Such as Figure 1a~1c As shown, the bacterial strain PM3 and 2g silicon-aluminum series ceramic porous material with 5% of the insertion amount are thrown into the ordinary liquid medium, and the bacterial strain PM3 adheres to and grows well; the chemical composition and concentration of the ordinary liquid medium are: beef Cream 5.0g, peptone 10.0g, sodium chloride 5.0g, distilled water 1L.

[0042] Set the culture temperature of the immobilized strain PM3 to 30°C, and at t=48h, the immobilized strain PM3 has a significant effect on COD, NH in the simulated domestic sewage 4 + The removal rates of -N and TP were 99.996%, 92.38%, 45.28%, respectively.

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Abstract

The invention belongs to the field of domestic wastewater treatment and specifically relates to a method for treating domestic wastewater with a silicon aluminum ceramic porous material immobilized microorganism. According to technical scheme, the method comprises the following steps: adding the silicon aluminum ceramic porous material and an efficient nitrogen and phosphorus removal bacterial strain into the domestic wastewater and then treating, wherein the dosage of the silicon aluminum ceramic porous material is 1-5g; 1-10mL of first bacterium suspension with OD 600 value from 0.1 to 2 is added into the efficient nitrogen and phosphorus removal bacterial strain; the first bacterium suspension is prepared after the efficient nitrogen and phosphorus removal bacterial strain is activated for 24h and centrifuged with a centrifugal machine; the rotating speed of the centrifugal machine is 8000-10000r / min; the centrifugation time is 10-12min; the activating condition of the efficient nitrogen and phosphorus removal bacterial strain is as follows: the temperature is at 28-30 DEG C, pH is 7-8 and the rotating speed of table concentrator is 130-160r / min. In the invention, the silicon aluminum ceramic porous material can increase the attaching area of microorganism, the cured microorganism concentration can be increased, the removal efficiency of the microorganism for pollutants is benefited and the treating effect can be enhanced.

Description

technical field [0001] The invention belongs to the field of domestic sewage treatment, and in particular relates to a method for treating domestic sewage with microorganisms immobilized by silicon-aluminum series ceramic porous materials. Background technique [0002] With the construction of my country's industry, agriculture, and urbanization, the discharge of domestic sewage is increasing, and the environmental problems caused by it are becoming more and more serious. The research and development of efficient and economical sewage treatment technology has attracted extensive attention from scholars. In recent years, in order to strengthen the control of environmental pollution, microbial immobilization technology has been extensively studied. In the field of wastewater treatment at home and abroad, microbial immobilization technology has become a research hotspot. [0003] Microorganisms immobilization technology (Microorganisms immobilization technology) is based on the...

Claims

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Application Information

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IPC IPC(8): C02F3/34C12N11/14C02F101/10C02F101/16
Inventor 姜彬慧黄菲王海燕李春月贾丽萍窦丹妮胡筱敏
Owner NORTHEASTERN UNIV
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