Biological filler for removing nitrate in underground water and preparation method and application of biological filler

A biological filler and groundwater technology, applied in the field of water treatment, can solve the problems of acid production, sulfuric acid radical production and slow denitrification rate, so as to avoid excessive sulfate radical, reduce ion concentration, and enhance microbial activity.

Inactive Publication Date: 2019-04-19
陈方鑫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a biological filler for removing nitrate in groundwater, to solve the problems of acid production, sulfuri

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The biological filler in this embodiment includes the following components in parts by weight: sulfur, calcium carbonate and granular activated carbon; in parts by weight, the ratio of sulfur, calcium carbonate and granular activated carbon is 1:3:0.4.

[0034] Its preparation method comprises the following steps:

[0035] (1) Weigh the reducing sulfur-based material, calcium carbonate-based material and bioactive material respectively according to the weight ratio, pass through 120 meshes after crushing, and mix uniformly;

[0036] (2) heating to 150°C for 4 hours;

[0037] (3) Carry out granulation, particle size is 6mm, naturally cool to room temperature.

Embodiment 2

[0039] The biological filler in the present embodiment comprises the following components in parts by weight: pyrite, dolomite and ceramsite; in parts by weight, the ratio of pyrite, dolomite and ceramsite is 1:4:0.5 .

[0040] Its preparation method is with embodiment 1.

Embodiment 3

[0042] The biological filler in the present embodiment comprises the following components in parts by weight: sodium thiosulfate, calcium carbonate-containing kitchen waste (chicken bone, shell) and granular activated carbon; The ratio of calcium carbonate kitchen waste to granular activated carbon is 1:2:0.3.

[0043] Its preparation method is with embodiment 1.

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PUM

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Abstract

The embodiment of the invention discloses a biological filler for removing nitrate in underground water. The biological filler is prepared from, by weight, a reducing sulfur-based material, a calciumcarbonate-based material and a bioactive material, wherein the weight ratio of the reducing sulfur-based material to the calcium carbonate-based material to the bioactive material is 1: (1-5): (0.1-0.6). The biological filler is used for solving the problems that acid and sulfate radicals are generated in a sulfur-autotrophic denitrification process and the denitrification rate is low. Effective removal of nitrate in the underground water is better achieved. The embodiment of the invention also provides a preparation method and application of the biological filler.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a biological filler for removing groundwater nitrate, a preparation method and application thereof. Background technique [0002] Nitrate exists widely in nature, and long-term drinking of groundwater polluted by nitrate / nitrite can lead to methemoglobinemia. Nitrate pollution is not only harmful to human body, but also harmful to crops. When crops absorb too much nitrate, the quality of protein in the grain will decrease, there will be problems in the synthesis of enzymes in the crop body, and the immunity against diseases and insect pests will decrease. At the same time, nitrate pollution can also cause harm to human health through human consumption of crops. In the long run, nitrate pollution in groundwater is extremely harmful, so the treatment of nitrate in groundwater is urgent. [0003] At present, there are three main categories of purification technologies for...

Claims

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Application Information

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IPC IPC(8): C02F3/28C02F3/34C02F101/16
CPCC02F3/2806C02F3/34C02F2101/163
Inventor 冯传平
Owner 陈方鑫
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