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A kind of ecological carbon source substrate for constructed wetland and its preparation method and application

A constructed wetland and ecological carbon technology, applied in chemical instruments and methods, biological water/sewage treatment, aerobic and anaerobic process treatment, etc. problems, to achieve the effect of shortening the commissioning cycle and facilitating process operation management

Active Publication Date: 2021-06-11
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the price of such carbon sources is relatively expensive, and continuous dosing will greatly increase the cost of operation
Moreover, due to the fluctuation of influent water quality and water volume, problems such as insufficient or excessive dosage will easily occur when the equipment is continuously added; when the dosage of organic carbon is insufficient, the C / N in the water body is low, and the If the nitrification is not complete, the denitrification effect will become poor; when the dosage is too high, the denitrification will also be restricted, and it will cause waste of carbon sources. At the same time, the excess carbon sources will cause secondary pollution to the effluent water quality

Method used

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  • A kind of ecological carbon source substrate for constructed wetland and its preparation method and application
  • A kind of ecological carbon source substrate for constructed wetland and its preparation method and application
  • A kind of ecological carbon source substrate for constructed wetland and its preparation method and application

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Embodiment 1

[0043] An ecological carbon source substrate for constructed wetlands, comprising:

[0044] Carbon source layer; the carbon source layer is aquatic plants, the aquatic plants are modified, and the ester bond and ether bond between lignin and hemicellulose are disconnected.

[0045]The activated sludge layer wrapped outside the carbon source layer contains aerobic bacteria and anoxic bacteria. As an alternative, there are some water-permeable pores outside the activated sludge layer, and the water-permeable Pores can form many aerobic, anoxic and anaerobic micro-treatment zones, providing suitable conditions for nitrogen and phosphorus removal.

[0046] Inorganic materials wrapped outside the activated sludge layer, the inorganic materials are glued together to form an external skeleton with a porous and highly water-permeable structure; the inorganic materials are a mixture of quartz sand, Portland cement and slag, Among them, the content of quartz sand is the most, and the c...

Embodiment 2

[0070] An ecological carbon source substrate for constructed wetlands, comprising:

[0071] Carbon source layer; the carbon source layer is aquatic plants, the aquatic plants are modified, and the ester bond and ether bond between lignin and hemicellulose are disconnected.

[0072] The activated sludge layer wrapped on the outside of the carbon source layer, the activated sludge layer contains aerobic bacteria and anoxic bacteria, as an alternative, the activated sludge layer is provided with some permeable holes, The permeable holes can form many aerobic, anoxic and anaerobic micro-treatment zones, providing suitable conditions for nitrogen and phosphorus removal.

[0073] The inorganic material wrapped outside the activated sludge layer, the inorganic material is glued with the activated sludge layer to form an external skeleton with a porous and highly water-permeable structure; the inorganic material is quartz sand, Portland cement The mixture of slag and slag, among whic...

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Abstract

The invention discloses an ecological carbon source matrix for constructed wetlands and its preparation method and application. The ecological carbon source matrix for constructed wetlands is characterized in that it comprises: a carbon source layer; wrapped outside the carbon source layer The activated sludge layer contains aerobic bacteria and anoxic bacteria in the activated sludge layer; the inorganic material layer wrapped outside the activated sludge layer, and the inorganic material layer is glued to the activated sludge layer The carbon source layer, the activated sludge layer and the inorganic material layer have a mass ratio of 3‑5:1:6‑10. By adding activated sludge, it can quickly enrich the microbial community in the constructed wetland system, and at the same time, it can effectively slow down the amount of organic carbon source released from the carbon source layer to the water body, and reduce the impact of excessive release of organic matter on the water body.

Description

technical field [0001] The invention relates to the field of water supply treatment, in particular to an ecological carbon source substrate for constructed wetlands and its [0002] Preparation methods and applications. Background technique [0003] At present, due to the pollution of water quality, the treated water of constructed wetlands is facing the problem of high nitrogen content. When using the traditional biological denitrification process, it often faces the problem of insufficient carbon source in the water body. Serious constraints on denitrification efficiency in treatment projects. In actual project operation, in order to achieve better denitrification effects, the method of adding small molecular carbon sources is often adopted to supplement the electron donors required for denitrification. The traditional carbon sources added are mainly organic solutions containing small molecules such as methanol, ethanol, acetate, glucose, and sucrose. [0004] However, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F101/30
CPCC02F3/302C02F2101/30C02F2305/06
Inventor 许兵张旭刘佳武道吉成小翔罗从伟王凯
Owner SHANDONG JIANZHU UNIV
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