Method for cultivating aerobic particle sludge by utilizing guanite

An aerobic granular sludge and struvite technology, applied in chemical instruments and methods, water/sludge/sewage treatment, biological water/sewage treatment, etc., can solve problems such as the disintegration of mature particles, achieve sufficient nutrient supply, The effect of shortening the culture period and not being prone to disintegration and apoptosis

Inactive Publication Date: 2011-10-12
DALIAN UNIV OF TECH
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Problems solved by technology

Mature granules or well-established micelle groups certainly have little impact on microorganisms, but Liu and Tay's research show

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  • Method for cultivating aerobic particle sludge by utilizing guanite
  • Method for cultivating aerobic particle sludge by utilizing guanite

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Embodiment

[0022] Cultivation of Aerobic Granular Sludge by Nitrification and Phosphorus Removal Using Struvite

[0023]The SBR reactor is made of plexiglass in a cylindrical shape, with a diameter of 10cm, a height of 60cm, and an effective volume of 4L. The barrel wall is provided with a sampling hole, through which the liquid level gauge 8, the relay 7, the magnetic stirring controller 1, the bottom aeration head 3 and the solenoid valve 6 Control the process of water intake, stirring, aeration and drainage in SBR. The drain is at the bottom of the reactor at a height of 25 cm. The on-off of the drain is controlled by the solenoid valve 6, and the replacement ratio is 50%. The reaction cycle time is 4.5 hours, in which the water inflow is 5 minutes, and the water outlet is 0.5 minutes. The sedimentation time of the granular sludge formation stage is gradually reduced from 1 hour to 3 minutes. The aeration rate of the reactor is 0.20m3 / h, which is equivalent to a surface gas rising ve...

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Abstract

The invention discloses a method for cultivating aerobic particle sludge by utilizing guanite, belonging to the technical field of water treatment equipment. The method is characterized in that the pH in the sequencing batch reactor (SBR) is controlled to 8.5 through adding 1g/L guanite at regular intervals to gradually improve inflow chemical oxygen demand (COD), ammonia nitrogen and phosphorus load so as to cultivate the aerobic particle sludge. The method has the effects that a good living environment is provided for organisms by using the guanite, and relative high-concentration free NH<4+> on the surface of the guanite can inhibit nitrifying bacteria; and under the condition that the pH is controlled to 8.5, as a carrier, the guanite has the characteristics of providing adhesion scenes for the organisms, compressing sludge double electrode layers and providing rich nutrition sources for the organisms inside the particles, and has the advantages as compared with inert carriers such as plastics, sponges and the like, thus the particle cultivation period is shortened, the nutrition inside the particles is fully supplied, the particles are not easy to generate disintegration and apotosis, and the market application prospects are wide.

Description

technical field [0001] The invention belongs to the technical field of waste water biological treatment, and relates to a method of adding ammonium magnesium phosphate (commonly known as struvite) inorganic nutrient carrier to an SBR reactor to quickly cultivate aerobic granular sludge with nitrosation and phosphorus removal functions. Background technique [0002] Aerobic granular sludge was first reported by Japanese scholars Mishima and Nakamura in the early 1990s. Under the background of complex types of wastewater and increasing difficulty in treatment in recent years, aerobic granular sludge has attracted attention due to its many advantages The extensive attention of scholars in the field of processing can be described as developing rapidly. These advantages can be summarized as follows: [0003] (1) The particles are dense and have good settling properties, which can save the secondary sedimentation tank. [0004] (2) The population of granular organisms is rich, t...

Claims

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Application Information

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IPC IPC(8): C02F3/12
CPCY02W10/10
Inventor 杨凤林王国文徐晓晨王栋
Owner DALIAN UNIV OF TECH
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