Nano biological filler for purifying aquaculture wastewater in biological filter tank and preparation method of nano biological filler

A technology for biological fillers and aquaculture wastewater, applied in chemical instruments and methods, biological water/sewage treatment, sustainable biological treatment, etc.

Inactive Publication Date: 2014-10-08
江苏三新山水生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When ceramsite and plastic products are used as fillers, the load of the filter is large and the loss of water head is small, but the removal rate of organic matter is not high, especially the removal effect of heavy metal ions is not good

Method used

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  • Nano biological filler for purifying aquaculture wastewater in biological filter tank and preparation method of nano biological filler
  • Nano biological filler for purifying aquaculture wastewater in biological filter tank and preparation method of nano biological filler

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Experimental program
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Effect test

Embodiment 1-3

[0032] Embodiment 1-3 preparation method is as follows:

[0033] (1) Mix nano-alumina, nano-titanium dioxide and nano-silicon dioxide at a mass ratio of 1-5g: 10-20g: 0.5-1g, place them in a temperature-controlled furnace, start heating from 100°C, and increase the temperature at a rate of 10 per minute The heating rate of °C is to raise the temperature to 500-600 °C, and keep it in a constant temperature state for 12-24 hours, so that it can be fully mixed and decomposed to obtain a composite nano-powder.

[0034](2) Weigh 50g of bentonite raw soil, dilute it with deionized water to form a bentonite suspension with a mass fraction of 0.1%, and then mix the diethylaminodithioformate sodium and bentonite suspension at a ratio of 0.07:1 , stirred in a water bath at 80°C for 5 hours, allowed to stand, centrifuged, washed three times with water, air-dried at room temperature, passed through a 100-mesh sieve, and kept at a constant temperature of 110°C for 1 hour to obtain a modifi...

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Abstract

The invention discloses nano biological filler for purifying aquaculture wastewater in a biological filter tank and a preparation method of the nano biological filler. The biological filler comprises an EM rejuvenation solution and an adsorption carrier of the EM rejuvenation solution, wherein the EM rejuvenation solution is a product obtained by performing mixed fermentation on an EM stock solution, molasses and deionized water; the adsorption carrier is obtained by performing mixed pressing on composite nano powder, kaolin powder and modified bentonite; the composite nano powder is a product obtained by performing mixing and high-temperature sintering on nano-level aluminum oxide, titanium dioxide and silicon dioxide; modified bentonite is prepared from sodium diethyldithiocarbamate modified original soil. The preparation method comprises the following steps: pressing adsorption carrier particles; fermenting to obtain the EM rejuvenation solution; dipping the EM rejuvenation solution by using the adsorption carrier to obtain the nano biological filler. The obtained nano biological filler is high in pore volume, high in cell adsorption capacity, large in specific surface area and strong in stability, has a good treatment effect on aquaculture sewage, and can be used for rapidly removing ammonia nitrogen, phosphorus and heavy metal ions in an aquaculture water body.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to the field of purification treatment of aquaculture wastewater. Background technique [0002] In recent years, intensive aquaculture has developed rapidly at home and abroad, especially in my country. The aquaculture production in my country has accounted for about 2 / 3 of the world's total aquaculture production. However, since my country's aquaculture still adopts the method of large-scale introduction and large-scale discharge, and the pollutants formed by the feed residues and fish, shrimp, and crab excreta put in during the aquaculture process have polluted the aquaculture water and the bottom of the pond, etc., making the aquaculture Water quality deterioration and eutrophication, its discharge has caused serious harm to the surrounding water environment and ecological environment. [0003] At present, the research and application of using microbial technology to tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/10C12N11/14
CPCY02W10/10
Inventor 王龙邵孝侯尹超毛欣宇塔法沈珊珊
Owner 江苏三新山水生物科技有限公司
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