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Algae-based biological phosphorus removal water purifying agent and preparation method thereof

A phosphorus water purifying agent and biological technology, applied in the field of nano-diatom composite water purifying agent and its preparation, can solve the problems of obstruction, adsorption site occupation, limitation of diatomite adsorption capacity, etc.

Inactive Publication Date: 2020-05-05
江苏成博环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Part of the micropores on the surface of diatomite raw soil is covered by impurities, the adsorption sites are occupied, and the ions in the solution are hindered from entering the pores of diatomite, which limits the adsorption capacity of diatomite to a certain extent.

Method used

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  • Algae-based biological phosphorus removal water purifying agent and preparation method thereof
  • Algae-based biological phosphorus removal water purifying agent and preparation method thereof
  • Algae-based biological phosphorus removal water purifying agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0021] A preparation method of nano-diatom composite water purifying agent, comprising the following steps:

[0022] (1) The natural diatom mineral powder is mechanically ground, and passed through a 80-100 mesh sieve, and the diatomite obtained after passing through the sieve is roasted at a temperature of 650° C. for 80 minutes, and then cooled to room temperature;

[0023] (2) The diatomite obtained in step (1) is added according to the ratio of adding 5 mL of nitric acid solution with a concentration of 0.6 mol / L per gram of diatomite, and configured as required, and the above solution is placed in a suitable container and put into In a constant temperature water bath oscillator, the temperature of the water bath is 40°C, and the shaking time is 1.5h. After the end, filter, wash the filter residue with deionized water until it is neutral, dry it in vacuum at 85°C for 6-8h, and then cool to room temperature. The obtained diatomite is mechanically ground again, and passed th...

Embodiment 2

[0026] In order to screen out the optimal calcination temperature and time of diatomite, the effects of different calcination temperatures and time treatments on the specific surface area and water purification capacity of diatomite were explored.

[0027] Firstly, the calcination temperature and calcination time were screened by orthogonal test, and the specific surface area of ​​untreated natural diatomite was compared. Under the calcination temperature and time conditions of each group, 20g of natural diatomite was taken for treatment, washed with deionized water, then vacuum-dried at 80°C for 6 hours and then cooled to room temperature, and the ratio of diatomite after each group of treatment was measured. surface area. The results are shown in Table 1.

[0028] Table 1 Effects of different calcination temperatures and times on the specific surface area of ​​diatomite

[0029]

[0030] The specific surface area of ​​untreated natural diatomaceous earth is 16.56m 2 / g...

Embodiment 3

[0037] In order to screen out the optimal concentration of nitric acid solution, the effects of different concentrations of nitric acid solution treatment on the specific surface area and water purification capacity of diatomite were explored.

[0038]The natural diatomite is divided into 5 groups by equal weight, numbered as 1-5 groups, 1-5 groups are respectively natural group, roasting group, low concentration acid treatment group (0.2mol / L), medium concentration acid treatment group (0.4mol / L) / L), high concentration acid treatment group (0.6 mol / L). Among them, groups 2-4 of diatomite were roasted at 650°C for 80 minutes, and then groups 3-5 were acid-leached in nitric acid solutions with concentrations of 0.2mol / L, 0.4mol / L, and 0.6mol / L. . The treatment method is: add 5 mL of nitric acid solution with a concentration of 0.6 mol / L per gram of diatomaceous earth, configure according to the needs, put the above solution in a suitable container and put it in a constant tem...

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Abstract

The invention provides an algae-based biological phosphorus removal water purifying agent and a preparation method thereof. The water purifying agent is an algae-based biological phosphorus removal water purifying agent which is prepared by taking a high-purity diatom natural mineral product as a matrix, adding a certain amount of an aluminum-containing mineral product and a special phosphorus phagocytosis biological bacterium and mixing the products and the bacterium. Inorganic phosphorus is adsorbed to the surface of diatom by virtue of the huge specific surface area and relatively strong adsorption capacity of diatom, and the diatom adsorbed with the inorganic phosphorus is quickly and physically flocculated in combination with the flocculation effect of aluminum salt, so that precipitated sludge is formed and discharged, and total phosphorus in sewage is greatly removed. The special phosphorus-phagocytosis biological bacterium contained in the water purifying agent can consume anddecompose and phagocytize organophosphorus in sewage while rapidly growing and propagating by taking diatom as a carrier in the sewage.

Description

technical field [0001] The invention relates to an algae-based biological phosphorus removal water purifier, in particular to a nano diatom composite water purifier and a preparation method thereof. Background technique [0002] Phosphorus is an important element in the ecosphere. Various phosphorus-containing compounds play an important role in human industrial and agricultural production and daily life, but at the same time, a large amount of phosphorus-containing wastewater is discharged into natural water bodies, and phosphorus in water bodies Enrichment is an important cause of water eutrophication. Nutrientization of water will cause algal blooms, a large drop in dissolved oxygen in water, and deterioration of water quality, which seriously threatens the balance of water ecosystems and causes great environmental problems. , aquaculture and tourism have brought great harm. Therefore, how to effectively reduce the phosphorus content in sewage is of great significance to...

Claims

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Application Information

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IPC IPC(8): C02F3/34C02F1/28C02F1/52C02F101/10C02F101/30
CPCC02F1/281C02F1/5236C02F3/34C02F2101/105C02F2101/30
Inventor 陈玉良邵燕平
Owner 江苏成博环保科技有限公司
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