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Method and device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles

An anaerobic ammonium oxidation and denitrification technology, applied in chemical instruments and methods, anaerobic digestion treatment, biological treatment devices, etc., can solve problems such as low activity and incomplete denitrification, and achieve reduced inhibition, fast startup, The effect of high resistance to shock loads

Pending Publication Date: 2017-02-22
BEIJING UNIV OF TECH
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Problems solved by technology

[0008] In order to overcome the problems of low activity and incomplete denitrification caused by the interference of organic matter in the treatment of organic nitrogen-containing wastewater by the anaerobic ammonium oxidation process, a combined denitrification process using denitrification embedded particles and anaerobic ammonium oxidation embedded particles is provided. device and method of operation

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  • Method and device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles

Examples

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Effect test

Embodiment 1

[0043] Example 1: A device for combined denitrification using denitrification and anammox embedding particles, such as figure 1 , the reaction device is cylindrical, divided into two independent areas inside and outside, the inner area is the reaction area, the outer area is the water bath area (5), the water bath area is the reaction area to maintain the temperature of the reaction area, and the outside of the water bath area is anaerobic ammonia The heat preservation and shading cover (6) of the oxidation reactor; the water inlet pipe (1) of the reaction zone is connected with the water inlet peristaltic pump, and the water inlet pipe of the reaction zone leads to the bottom of the reaction zone; the outlet of the reaction zone passes through the grid (8) and the reaction zone The area outlet pipe (2) is connected; the anaerobic ammonium oxidation embedding particles (10) in the reaction area are embedded in the Pall ring (9) or float in the reactor, and the denitrification e...

Embodiment 2

[0044] Example 2: Using WPU as a carrier to embed denitrifying bacteria and anammox bacteria respectively, and then place them together in the reaction device of Example 1 to realize the coupled denitrification of denitrification and anammox processes The operation method, the specific steps are as follows:

[0045] (1) Separation and selection of denitrifying bacteria

[0046] Take the backflow sludge from the secondary settling tank of the sewage treatment plant, pass through a 30-mesh nylon fine mesh, filter out the larger magazine particles, and then wash and centrifuge 2-3 times with 0.9% normal saline (each centrifuge at a speed of 4000r / min , 10 minutes each time), the enriched activated sludge was domesticated and cultivated with the prepared simulated nitrate nitrogen wastewater, and the simulated wastewater composition was: NaNO 3 :75mg / L, CH 3 COONa: 300mg / L, KH 2 PO 3 : 12.8mg / L, MgSO4: 10mg / L, ZnSO 4 ˙7H 2 O:3.5mg / L, CaCl 2 ˙2H 2 O:7.8mg / L, FeCl 2 ˙2H 2 ...

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Abstract

The invention relates to a method and a device for joint denitrifying by denitrification and anaerobic ammonia oxidation embedding particles, and belongs to the field of sewage. The method comprises the following steps of respectively embedding a WPU (water-borne polyurethane) material by separated denitrification bacteria and anaerobic ammonia oxidation bacteria, putting the denitrification embedding particles into a flow-separated ball, putting anaerobic ammonia oxidation embedding particles into a Pall ring or into water in a floating state, and setting the denitrification embedding particles and the anaerobic ammonia oxidation embedding particles into an incomplete mixing state. The device comprises a water bath constant-temperature system, a sealing device, the flow-separated ball, the Pall ring and the like. The method and the device have the advantages that after embedding of the denitrification bacteria and anaerobic ammonia oxidation bacteria, the influence to the activity is avoided, the amounts of the denitrification bacteria and the anaerobic ammonia oxidation bacteria in the system are increased, the loss of bacteria amounts is reduced, the problems of slow growth of the anaerobic ammonia oxidation bacteria and stricter growth environment requirement in an anaerobic ammonia oxidation technology are solved, and the denitrifying efficiency of the system is improved by combining a nitrifying mode; the two types of embedding are set into the incomplete mixing state in the device, and respective feeding ratios can be flexibly adjusted according to the water quality.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a water treatment reactor and an operation method using denitrification embedded particles and anaerobic ammonium oxidation embedded particles as carriers. Background technique [0002] Embedding and immobilization technology is an emerging technology in the field of modern bioengineering. It refers to the use of chemical or physical means to limit enzymes, microbial cells, animal and plant cells, organelles and other biocatalysts to a specific space area and keep them in place. Inherent catalytic activity, can be used repeatedly and continuously. In the initial stage of research on immobilized microorganism technology, it is mainly used in fermentation industry production, immobilizing enzymes in carriers to improve production efficiency. By the 1960s, the immobilization technology developed to directly immobilize the cells in the carrier, neither extracting the enzy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F3/34
CPCC02F3/2806C02F3/34C02F2203/006
Inventor 李军张伟光曾金平王秀杰
Owner BEIJING UNIV OF TECH
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