Method for producing organic carbon fertilizer through photocatalytic and oxidized organic wastewater

A photocatalytic oxidation and organic wastewater technology, applied in the field of water treatment, can solve the problems of difficult catalyst recovery, narrow light absorption range, low light energy utilization rate, etc., to improve crop yield and agricultural product quality, low selectivity, and catalytic efficiency high effect

Active Publication Date: 2016-03-23
SHENZHEN BATIAN ECOTYPIC ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

About Catalyst Pure TiO 2 and TiO 2 / Fe 3 o 4 The catalytic ability is weak, the absorption range of light is narrow, the utilization rate of light energy is low, and there are great difficulties in the recovery of catalysts.

Method used

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  • Method for producing organic carbon fertilizer through photocatalytic and oxidized organic wastewater

Examples

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Effect test

Embodiment 1

[0047] Using molasses alcohol waste liquid as raw material to produce organic carbon fertilizer, the production process is as follows:

[0048] (1) Provide a photocatalytic oxidation reaction container with an agitator and a remote-controlled timing ultraviolet lamp. There is a water outlet with a filter membrane and a catalyst outlet at the bottom of the container, a detachable plastic cover on the top, and a waste liquid inlet at the upper end of the container;

[0049] (2) Add a certain amount of photocatalyst TiO in the reactor 2 / SiO 2 / Fe 3 o 4 Composite particles, ensure that its concentration in the reaction process is at 1.2g / L, then pump molasses alcohol waste liquid (alcohol waste liquid has almost no waste residue, and can not be filtered) into the reactor, add 4% concentration of 80% For hydrogen peroxide, turn on the mixer to mix the molasses alcohol waste liquid, hydrogen peroxide and catalyst evenly, stir for 10 minutes to mix the solution evenly, and avoid ...

Embodiment 2

[0056] To produce liquid organic carbon fertilizer with amino acid production waste liquid as raw material, the production process is as follows:

[0057] (1) Provide a photocatalytic oxidation reaction container with an agitator and a remote-controlled timing ultraviolet lamp. There is a water outlet with a filter membrane and a catalyst outlet at the bottom of the container, a detachable plastic cover on the top, and a waste liquid inlet at the upper end of the container;

[0058] (2) Add a certain amount of photocatalyst TiO in the reactor 2 / SiO 2 / Fe 3 o 4 Composite particles, to ensure that its concentration in the reaction process is 1.2g / L, then the amino acid production waste liquid is coarsely filtered to remove solid insolubles and then pumped into the reactor, add 4% hydrogen peroxide with a concentration of 80%, and turn on the stirrer to Amino acid production waste liquid, hydrogen peroxide and catalyst are mixed evenly, and stirred for 10 minutes to make the ...

Embodiment 3

[0065] Using papermaking black liquor as raw material to produce liquid organic carbon fertilizer, the production process is as follows:

[0066] (1) Provide a photocatalytic oxidation reaction container with an agitator and a remote-controlled timing ultraviolet lamp. There is a water outlet with a filter membrane and a catalyst outlet at the bottom of the container, a detachable plastic cover on the top, and a waste liquid inlet at the upper end of the container;

[0067] (2) Add a certain amount of photocatalyst TiO in the reactor 2 / SiO 2 / Fe 3 o 4 Composite particles, ensure that its concentration in the reaction process is 1.2g / L, then coarsely filter the papermaking black liquor to remove solid insolubles, pump it into the reactor, add 4% hydrogen peroxide with a concentration of 80%, and turn on the agitator to make the papermaking Mix the black liquor, hydrogen peroxide and the catalyst evenly, stir for 10 minutes to make the solution evenly mixed, and avoid light ...

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Abstract

The invention discloses a method for producing an organic carbon fertilizer through photocatalytic and oxidized organic wastewater and relates to an organic wastewater treatment and waste utilization method. The method includes the following steps that 1, a photocatalytic and oxidized reaction container is prepared; 2, organic wastewater obtained after coarse filtration is pumped into the photocatalytic and oxidized reaction container; 3, photocatalysts and hydrogen peroxide are added, wherein the photocatalysts including TiO<2>/SiO<2> and Fe<3>O<4> are added, the hydrogen peroxide is pumped in, a stirrer is started to mix the photocatalysts and the hydrogen peroxide to be uniform, and the operation process is required to be kept out of the sun; 4, a photocatalysis-oxidative degradation reaction is conducted, wherein a top cover is opened so that sunlight can be directly emitted into the reaction container or an ultraviolet lamp is turned on for illumination; 5, the catalyst is recycled, evaporated, concentrated and made into a liquid organic carbon fertilizer with the carbon content being 50-500 g/L. The organic carbon fertilizer produced through the method can be used for crop irrigation and spraying and can further serve as fertilizer mother liquor to be blended into various types of fertilizers for being applied.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for converting organic waste water into organic carbon fertilizer by photocatalytic oxidation. Background technique [0002] In recent years, with the rapid economic development, the discharge of industrial and agricultural wastewater and domestic sewage has become increasingly large. The massive discharge of these waste waters has led to a sharp increase in the content of organic matter in rivers, lakes and other water bodies, and some water bodies have serious eutrophication. Because the waste water also contains harmful chemicals and radioactive substances to animals and plants, which seriously threaten human health, the waste water Safe handling is imminent. [0003] As a strong oxidizing agent, hydrogen peroxide has a certain effect on the treatment of organic wastewater. Photocatalytic hydrogen peroxide oxidation technology can produce hydroxy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/12C05F7/00B01J23/745C02F101/30
CPCB01J21/063B01J21/08B01J23/745B01J35/0006C02F1/001C02F1/04C02F1/325C02F1/488C02F1/722C02F1/725C02F9/00C02F2101/30C02F2305/10C05F7/00Y02A40/20Y02P20/584Y02W10/37
Inventor 黄春艳
Owner SHENZHEN BATIAN ECOTYPIC ENG
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