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Purifying agent for nitrates in water and application of purifying agent

A technology of nitrates and purifying agents, which is applied in the direction of water pollutants, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of secondary pollution denitrification efficiency and limited application, and achieve the prevention and control of agricultural non-point source pollution , to overcome the hydration force, to alleviate the effect of harm

Pending Publication Date: 2019-08-09
AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a water nitrate purifier and its application, in order to solve the technical problems of limited application, secondary pollution and low denitrification efficiency in the existing treatment technology

Method used

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  • Purifying agent for nitrates in water and application of purifying agent
  • Purifying agent for nitrates in water and application of purifying agent
  • Purifying agent for nitrates in water and application of purifying agent

Examples

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Effect test

Embodiment

[0039] Embodiment: a kind of water body nitrate purifying agent

[0040] Such as figure 1 Shown, the preparation method of this scavenger comprises the following steps:

[0041] 1. Preparation of peanut shell biochar by anaerobic pyrolysis at a high temperature of 600 °C in a muffle furnace:

[0042] (1) Grind the dried peanut shells, pass through a 20-mesh sieve, and pour them into the muffle furnace; (2) Pass N 2 The whole process of firing biochar is carried out under anaerobic conditions, and the heating time of the muffle furnace is set for 1h;

[0043] (3) Set the firing temperature to 600°C and the time to 2 hours;

[0044] (4) While keeping the N 2 The state is cooled down for 1h, and cooled to room temperature;

[0045] (5) Take it out and soak it in 1 mol / L HCl for 1 hour (solid-to-liquid ratio is 1:10), then wash it with deionized water until neutral, dry it at 70-80°C, grind it through a 100-mesh sieve, and store it for later use. Peanut shell biochar (BC). ...

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Abstract

The invention discloses a purifying agent for nitrates in water and application of the purifying agent, and aims to solve the technical problems that in an existing treatment technology, application is limited, secondary pollution is caused, and the nitrogen removal efficiency is low. The preparation method of the purifying agent for the nitrates in the water comprises the steps that biomass is ground and screened to prepare charcoal; iron-modified charcoal is prepared by adding a FeCl3 solution; the purifying agent for the nitrates in the water is prepared by adding acrylamide, N,N-methylenebisacrylamide and ammonium persulfate. The invention further provides a treatment method of the nitrates in a water system. The treatment method comprises the steps that pH and temperature of to-be-treated disposal sewerage are adjusted; the purifying agent for the nitrates in the water is added, and then the nitrates can be removed. The purifying agent for the nitrates in the water can be used for treating production wastewater, has the effect of preventing and controlling agricultural non-point source pollution and can be further used for treating nitrate pollution to drinking water, relieving harm, caused by the drinking water high in nitrate content, to the human health, preventing further deterioration of the water and providing an effective measure for protection of a water source.

Description

technical field [0001] The invention relates to the technical field of water body environmental protection treatment, in particular to a water body nitrate purifying agent and application thereof. Background technique [0002] Due to the excessive use of chemical fertilizers and pesticides in agricultural production, as well as the discharge of industrial and domestic wastewater, water nitrate pollution has become one of the major environmental problems facing the world. [0003] my country's "Drinking Water Hygienic Standards" (GB5749-2006) stipulates that the upper limit of the concentration of nitrate nitrogen in drinking water is 10mg / L. When the nitrate in drinking water is too high, the nitrate is easily reduced to nitrite by the fungus in the human body, and the nitrite converts the ferrous iron in the red protein into ferric iron, causing the red blood cells to lose their oxygen-carrying capacity; Nitrite and nitrite form nitrosophenolamines and nitrosoamines under ...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/16
CPCC02F9/00C02F1/66C02F1/58C02F1/001C02F1/52C02F1/281C02F1/283C02F2101/163
Inventor 李洁智燕彩张贵龙赖欣赵建宁
Owner AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI
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