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Method for fast biomembrane formation of fluidized filler in reaction technology of fluidized carrier biomembrane

A biofilm, fluidized technology used in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc.

Inactive Publication Date: 2011-12-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing fluidized carrier biofilm reactor adopts the circulation method to form a large amount of inoculated sludge and needs to return the sludge. The problem of large power, high cost and long time is required, and a method for rapid film formation of fluidized filler in the fluidized carrier biofilm reaction process is provided

Method used

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  • Method for fast biomembrane formation of fluidized filler in reaction technology of fluidized carrier biomembrane

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specific Embodiment approach 1

[0011] Specific embodiment one: the method for fast film-hanging of fluidized filler in the fluidized carrier biofilm reaction process of this embodiment is realized according to the following steps: 1. Add fluidized filler in the aerobic zone of the fluidized carrier biofilm reaction process, and The inoculated activated sludge is poured into the reactor and filled with artificial water, and the artificial water is drained after standing for 24 hours; 2. The artificial water is pumped into the reactor under the aeration state, and the anaerobic zone and the anoxic zone are opened. Stirring paddle and air pump, the hydraulic retention time is anaerobic 2.5h, anoxic 2.5h, aerobic 5h, after 4 days, the hydraulic retention time is shortened to anaerobic 2h, anoxic 2h, aerobic 4h, and then turn on the nitrification liquid return pump, After 7 days, the film formation is completed; the dosing rate of fluidized filler in step 1 is 30-50%; the COD of artificial water distribution in s...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that the material of the fluidized filler in step 1 is polyethylene, polypropylene or polyurethane; the shape of the fluidized filler is a cylinder or a sphere. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 to Embodiment 2 in that the addition rate of fluidized filler in step 1 is 30%. Other steps and parameters are the same as one of the specific implementation modes 1 to 2.

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Abstract

The invention provides a method for fast biomembrane formation of fluidized filler in the reaction technology of fluidized carrier biomembrane, which relates to a method for biomembrane formation of fluidized filler and solves the problems that sludge mount in inoculation is large, sludge reflux is required, the large power is required, the cost is high and the time is long as the current fluidized carrier biomembrane reactor adopts a circulation method to form the biomembrane. The method comprises the following steps: 1, adding fluidized filler into an aerobic area, pouring the inoculated active sludge into the reactor and filling the manually made water to the reactor; standing for 24 hours and then emptying the reactor; and 2, pumping the manually made water into the reactor in an aerated state; opening the stirrers and gas pumps in the anaerobic area and an anoxic area; staying for 2.5 hours at an anaerobic state, 2.5 hours at an anoxic state and 5 hours at an aerobic state, whichare shortened to 2 hours, 2 hours and 4 hours respectively 4 days later; and then opening a nitrated liquid reflux pump and finishing the biomembrane formation 7 days later. The invention realizes biomembrane formation only by using a small amount of inoculation sludge, without setting a circulation reflux device, which has the advantages of small power, low cost, high biomembrane formation speedof only 7d and short time.

Description

technical field [0001] The invention relates to a method for forming a film on a fluidized filler. Background technique [0002] In the wastewater biological treatment process, the biological fluidized bed technology is a new type of biofilm process, which was developed in the early 1970s after the fluidized bed technology was widely used in the chemical industry. The carrier is in a fluidized state in the fluidized bed, so that the three phases of solid (biofilm), liquid (wastewater) and gas (air) are fully contacted, the particles collide violently, the surface of the biofilm is constantly renewed, and the microorganisms are always In vigorous growth stage. This technology maintains a high concentration of biomass in each treatment section of the biochemical pool, and the mass transfer efficiency is extremely high, so that the matrix degradation speed of the wastewater is fast, the hydraulic retention time is short, and the operating load is 5 to 10 times higher than that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/10C02F3/34
CPCY02W10/10
Inventor 韩洪军王冰马文成李雨霏张凌瀚胡宏博刘音颂
Owner HARBIN INST OF TECH