Oyster shell-based biological agent for water purification and preparation method of biological agent

A technology for water purification and biological preparations, applied in chemical instruments and methods, biological water/sewage treatment, seawater treatment, etc., can solve problems such as water pollution, and achieve the effects of high immobilization rate, high microbial activity and good stability

Inactive Publication Date: 2020-01-03
MINNAN NORMAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to propose a multi-layer self-encapsulation technology to immobilize microorganisms for the preparation of novel water body purification biological preparations by using the oyster shells that exist in large quantities and are difficult to handle in the aquatic industry as the substrate for the increasingly serious water pollution problems at present. To improve the water quality of aquaculture water bodies, landscape water bodies and natural water bodies, and realize a circular economy and a green economy that use waste to treat waste

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  • Oyster shell-based biological agent for water purification and preparation method of biological agent

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preparation example Construction

[0043] The present invention also provides a preparation method of the oyster shell-based water purification biological agent, comprising the following steps:

[0044] 1) Wash the oyster shell, dry it, and crush it to 60-100 mesh.

[0045] 2) Take 80-100 parts of oyster shell powder, put it in a muffle furnace, calcinate it at 500-600 ℃ for 1-3 h, take it out and place it in a drying dish, and wait for it to cool.

[0046] 3) Add calcined oyster shell powder into the reactor, then add 3-5 parts of concentrated ammonia water, 5-10 parts of ethylenediamine and 200-300 parts of deionized water, stir well and seal the reactor , heated up to 80-95°C, reacted for 8-12 hours, filtered, and dried with hot air to obtain aminated oyster shell powder.

[0047] 4) Take 10-15 parts of microbial powder, add it to 400-500 parts of deionized water, stir evenly, add the aminated oyster shell powder prepared in the previous step, and stir slowly for 10-20 minutes, because the surface of the mi...

Embodiment 1

[0054] An oyster shell-based biological preparation for water purification, which is prepared from the following raw materials in parts by weight:

[0055] 100 parts oyster shell powder;

[0056] 5 parts concentrated ammonia water;

[0057] 10 parts of ethylenediamine;

[0058] 10 parts of nitrifying bacteria powder;

[0059] 50 parts of cationic polyacrylamide.

[0060] The invention also provides a preparation method of the oyster shell-based biological preparation for water purification, which includes the following steps.

[0061] 1) Wash the oyster shells, dry them, and crush them to 60 mesh.

[0062] 2) Take 100 parts of oyster shell powder, place it in a muffle furnace, calcinate at 550 °C for 2 h, take it out and place it in a drying dish, and wait for it to cool.

[0063] 3) Add the calcined oyster shell powder into the reactor, then add 5 parts of concentrated ammonia water, 10 parts of ethylenediamine and 300 parts of deionized water, stir well, seal the reacto...

Embodiment 2

[0072] An oyster shell-based biological preparation for water purification, which is prepared from the following raw materials in parts by weight:

[0073] 100 parts oyster shell powder;

[0074] 5 parts concentrated ammonia water;

[0075] 10 parts of ethylenediamine;

[0076] 10 parts of photosynthetic bacteria powder;

[0077] 50 parts of cationic polyacrylamide.

[0078] Concrete preparation method is with embodiment 1.

[0079] In this embodiment, the water body purification biological agent mainly has the effect of increasing the oxygen content in the water body.

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Abstract

The invention belongs to the fields of environmental treatment and restoration, and particularly relates to a biological agent applied to water purification and a preparation method of the biologicalagent. The biological agent for water purification disclosed in the invention is prepared from the following raw materials in parts by weight: 80-100 parts of oyster shell powder, 3-5 parts of stronger ammonia water, 5-10 parts of ethylenediamine, 10-15 parts of microbial powder, and 50-80 parts of cationic polyacrylamide. The invention provides the biological agent aiming at the increasingly serious water pollution problem, the oyster shell-based multi-layer self-encapsulating microbial microspheres are formed by the steps of performing crushing by using oyster shells that are abundant in theaquatic industry as raw materials, performing calcination, performing a reaction with the ethylenediamine and the ammonia water to graft positively-charged amine groups on the surface, and immobilizing microorganisms on the oyster shell powder substrate through a multi-layer self-encapsulation technology, and the microbial microspheres are used for water purification.

Description

technical field [0001] The invention belongs to the field of environmental treatment and restoration, and in particular relates to a biological preparation applied to water body purification and a preparation method thereof. Background technique [0002] Since the 1990s, with the rapid development of my country's offshore aquaculture industry, the scale of intensive industrial aquaculture has been expanding day by day. Although the intensive and high-density aquaculture model has brought higher aquaculture output, it has brought a lot of water to the aquaculture water. The residual feed and excrement in the water will rapidly increase the nitrogen content in the water, which will affect the decrease of the dissolved oxygen content in the water, the decrease of pH, and the high nitrite content, resulting in the rapid deterioration of the breeding environment. These changes will not only seriously affect the growth and survival of aquatic products, for example, higher concentra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F103/08
CPCC02F3/34C02F2103/08
Inventor 费鹏张国广张琼
Owner MINNAN NORMAL UNIV
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