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A kind of microbial carbon source slow-release wax and its preparation method and application

A microorganism and carbon source technology, applied in the field of water treatment, can solve the problems of unfavorable and beneficial microorganism growth and reproduction, microbial metabolism imbalance, COD increase, etc., to achieve the effect of improving water treatment efficiency, maintaining carbon, nitrogen and phosphorus balance, and increasing the contact area.

Active Publication Date: 2021-05-25
OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, direct dosing of carbon sources will lead to a short-term increase in COD in the water body, resulting in hypoxia in the water body and deterioration of water quality, and only when the ratio of carbon to nitrogen and phosphorus is in an appropriate range can beneficial microorganisms grow and reproduce rapidly. Directly adding carbon sources will cause the organic carbon content in the water body to be too large in the early stage and too small in the later stage, leading to problems such as microbial metabolism imbalance, which is not conducive to the growth and reproduction of beneficial microorganisms

Method used

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  • A kind of microbial carbon source slow-release wax and its preparation method and application

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Effect test

Embodiment 1

[0061] A microbial carbon source slow-release wax comprises a waxy carrier, and water-insoluble microbial carbon sources and auxiliary agents distributed in the waxy carrier.

[0062] The waxy carrier includes the following raw materials in parts by weight: 70 parts of soft wax with a melting point of 45°C, 20 parts of paraffin wax with a melting point of 55°C, and 10 parts of microcrystalline wax with a melting point of 60°C.

[0063] The water-insoluble microbial carbon source includes the following raw materials: engine oil and PHBV; the mass of the engine oil and PHBV are respectively 5% and 2% of the mass of the waxy carrier.

[0064] The auxiliary agent includes the following raw materials: rhamnolipid and water; the mass of the rhamnolipid and water are respectively 1.5% and 2% of the mass of the waxy carrier.

[0065] A method for preparing the above-mentioned microbial carbon source slow-release wax, comprising the following steps:

[0066] (1) After heating and melt...

Embodiment 2

[0071] A microbial carbon source slow-release wax, comprising a waxy carrier, a water-insoluble microbial carbon source and an auxiliary agent distributed in the waxy carrier, and a calcium alginate fiber network distributed in the waxy carrier in a three-dimensional network structure; The calcium alginate fibers in the calcium alginate fiber net extend to the surface of the waxy carrier to communicate with the outside world.

[0072] The waxy carrier includes the following raw materials in parts by weight: 70 parts of soft wax with a melting point of 45°C, 20 parts of paraffin wax with a melting point of 55°C, and 10 parts of microcrystalline wax with a melting point of 60°C.

[0073] The water-insoluble microbial carbon source includes the following raw materials: engine oil and PHBV; the mass of the engine oil and PHBV are respectively 5% and 2% of the mass of the waxy carrier.

[0074] The auxiliary agent includes the following raw materials: rhamnolipid and water; the mas...

Embodiment 3

[0083] A microbial carbon source slow-release wax, comprising a waxy carrier, a water-insoluble microbial carbon source and an auxiliary agent distributed in the waxy carrier, and a calcium alginate fiber network distributed in the waxy carrier in a three-dimensional network structure; The calcium alginate fibers in the calcium alginate fiber net extend to the surface of the waxy carrier to communicate with the outside world.

[0084] The waxy carrier includes the following raw materials in parts by weight: 72 parts of soft wax with a melting point of 48°C, 20 parts of paraffin wax with a melting point of 60°C, and 8 parts of microcrystalline wax with a melting point of 70°C.

[0085] The water-insoluble microbial carbon source includes the following raw materials: engine oil and PHBV; the mass of the engine oil and PHBV are respectively 15% and 1% of the mass of the waxy carrier.

[0086] The auxiliary agent includes the following raw materials: rhamnolipid and water; the mass ...

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Abstract

The invention relates to the technical field of water treatment, and discloses a microbial carbon source slow-release wax and a preparation method and application thereof. The microbial carbon source slow-release wax includes a wax carrier, a water-insoluble microbial carbon source and an auxiliary agent distributed in the wax carrier. The invention utilizes the waxy carrier to load the microbial carbon source, which can provide a growth and reproduction site for beneficial microorganisms, and the carbon source is released slowly without causing the COD of the water body to rise, and can provide the beneficial microorganisms with a continuous, on-demand and controllable carbon source. , maintain the balance of carbon, nitrogen and phosphorus, which is conducive to the growth and reproduction of beneficial microorganisms, so it can improve the effect of water treatment.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a microbial carbon source slow-release wax and its preparation method and application. Background technique [0002] Nitrogen and phosphorus are important nutrient sources for organisms. Excessive nitrogen and phosphorus content in water bodies can easily lead to eutrophication of water bodies. There are many sources of nitrogen and phosphorus pollution, and industrial and mining wastewater, livestock and poultry breeding wastewater and domestic wastewater all have high nitrogen and phosphorus content. At present, nitrogen and phosphorus pollution has become an important issue in the prevention and control of water pollution. [0003] Ammonia oxidizing bacteria, nitrosifying bacteria, nitrifying bacteria, denitrifying bacteria and other microorganisms can convert ammonia nitrogen, nitrite nitrogen, nitrate and organic nitrogen in the water body into nitrogen and overflow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34C02F101/16C02F101/10
CPCC02F3/34C02F2101/105C02F2101/16C02F2305/06
Inventor 郑刚杨志坚
Owner OCEAN RES CENT OF ZHOUSHAN ZHEJIANG UNIV