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A method for enhancing anaerobic ammonium oxidation in sediments using waste sludge from water purification plants

A technology of anaerobic ammonium oxidation and waste sludge, which is applied in the field of environmental microorganisms to achieve simple operation procedures, improve the habitat of anaerobic ammonium oxidation bacteria, and strengthen the effect of anaerobic ammonium oxidation

Active Publication Date: 2017-02-01
BEIJING NORMAL UNIVERSITY
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some researchers use external materials to provide a suitable growth environment for bacteria, but most of them use the method of mixing fixed materials with anaerobic ammonium oxidation sludge for fixation, and 1-2 weeks of activation culture are required before being put into the reactor.

Method used

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  • A method for enhancing anaerobic ammonium oxidation in sediments using waste sludge from water purification plants
  • A method for enhancing anaerobic ammonium oxidation in sediments using waste sludge from water purification plants
  • A method for enhancing anaerobic ammonium oxidation in sediments using waste sludge from water purification plants

Examples

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Effect test

example 1

[0023] Example 1: Using waste sludge (WTRs) from a water purification plant in Beijing as raw material, the contents of iron and aluminum in the waste sludge are 150 and 100mg g respectively -1 . After the waste sludge from the water purification plant is dried naturally, it is passed through a 100-mesh sieve. Take 100g of a eutrophic lake sediment in North China, and mix it evenly with 5g of the above-mentioned WTRs. The dosage of the latter is 10% of the dry weight of the former. The bottom and top of the column are cushioned with nylon mesh to prevent the sediment from flowing out. In addition, the second column enriched the sediment without WTRs and used it as a control. Only WTRs were added to the third column for enrichment, and this was used as a blank control. In order to ensure that the system is in an anaerobic state, except for the water inlet and outlet, the entire column is in a sealed state, and the N 2 The deionized water configuration feeds the water. The ...

example 2

[0026] Example 2: Also use waste mud (WTRs) from a water purification plant in Beijing as raw material, and the waste mud is passed through a 100-mesh sieve after natural drying. Take 80g of a river sediment polluted by high ammonia nitrogen in North China, and mix it evenly with 5g of the above WTRs. The dosage of the latter is 10% of the dry weight of the former. The bottom and top of the column are cushioned with nylon mesh to prevent the sediment from flowing out. In addition, the second column enriched the sediment without WTRs and used it as a control. In order to ensure that the system is in an anaerobic state, except for the water inlet and outlet, the entire column is in a sealed state, and the N 2 The deionized water configuration feeds the water. The water is fed from the bottom up, and the flow rate of the water is 200mL day -1 , a pH of 8, and the initial NH 4 + , NO 2 - and NO3 - Concentrations were 10.0mM, 3.0mM and 5.0mM, NH in water was measured every ...

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Abstract

The invention provides a method for enhancing the anaerobic ammoxidation effect of a deposit by using water treatment plant waste mud (WTRs) as a carrier, and belongs to the technical field of water treatment. The method is characterized in that the deposit and the WTRs are enriched through a closed anaerobic cylindrical device, and a deposit-WTRs mixture with the wet-to-dry weight ratio of 10:1 is added to synthetic water rich in ammonia nitrogen and is enriched for a period of time to obtain a deposit containing high activity and high abundance anaerobic ammoxidation bacteria. The purposes comprise the stimulation of the in situ environment of the deposit in eutrophic water and the provision of much interception indication for the anaerobic ammoxidation bacteria by using the large specific surface area of the WTRs as a carrier. The WTRs contain a large amount of iron, can weaken the inhibition effect of P, heavy metals and other substances in the deposit on the anaerobic ammoxidation effect, and provide suitable living environment for the anaerobic ammoxidation bacteria. The method ahs the advantages of low cost of the used materials, environmental protection, simple technological operation, solving of the treatment problem of the WTRs, realization of the effective control of endogenous release of the eutrophic water, and 'using waste to treat waste' purpose realization facilitation.

Description

technical field [0001] The invention belongs to the field of water treatment, or environmental engineering, or environmental microorganisms. Specifically, it is a method for strengthening the anaerobic ammonium oxidation of sediments by utilizing the waste mud of a water purification plant. Background technique [0002] my country's water pollution is serious, and most rivers, lakes, wetlands and other water ecological environments are threatened by eutrophication. Among them, excessive ammonia nitrogen content is one of the most serious problems. Sources of ammonia nitrogen pollution include exogenous pollution discharge and endogenous pollution release. Exogenous pollution usually includes the discharge of point source and non-point source pollution around the water environment. With the enhancement of water environmental protection awareness and regulations, external pollution has been effectively controlled, and the treatment methods and processes for external pollutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28
CPCC02F3/28
Inventor 裴元生王咨元王昌辉王志新
Owner BEIJING NORMAL UNIVERSITY
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