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Method for treating landfill leachate with photocatalytic biosorbent

A biosorbent and landfill leachate technology, applied in biological water/sewage treatment, special compound water treatment, chemical instruments and methods, etc., can solve the problems of complex process, high cost, high equipment requirements, etc., and achieve simplified process , low cost, high biological activity

Active Publication Date: 2019-03-22
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the disadvantages of complex process flow, high equipment requirements, and high cost.

Method used

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  • Method for treating landfill leachate with photocatalytic biosorbent
  • Method for treating landfill leachate with photocatalytic biosorbent
  • Method for treating landfill leachate with photocatalytic biosorbent

Examples

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Effect test

Embodiment 1

[0034] A kind of photocatalytic biosorbent of the present invention, this photocatalytic biosorbent comprises Phanerochaete chrysosporium bacterial ball, graphite type C 3 N 4 and calcium alginate; graphite type C 3 N 4 The hyphae of Phanerochaete chrysosporium balls are coated by calcium alginate.

[0035] A preparation method of the above-mentioned photocatalytic biosorbent of the present embodiment, comprising the following steps:

[0036](1) Weigh 10g of urea into a 100mL crucible, cover the lid, and then wrap it tightly with tin foil; place the above sample in the middle of the muffle furnace for calcination. The calcination is specifically as follows: heating the urea from room temperature to 550° C. at a heating rate of 8° C. / min, and then keeping the temperature at 550° C. for constant temperature calcination for 3 hours. After cooling in the air, grind the sample in a mortar for 5 minutes, and the resulting bright yellow powder is graphite type C 3 N 4 Material....

Embodiment 2

[0045] A method for treating landfill leachate with a photocatalytic biosorbent of the present invention, comprising the following steps:

[0046] (1) Dilute the original landfill leachate with ultrapure water to obtain landfill leachate with a certain initial concentration of TOC. The initial TOC concentration can be 180mg / L, 210mg / L, 240mg / L, 270mg / L, 300mg / L respectively.

[0047] (2) Add the photocatalytic biosorbent obtained in Example 1 to the landfill leachate of the initial concentration TOC obtained in step (1), and the amount of photocatalyst biosorbent added is to add photocatalytic biosorbent in every 100mL landfill leachate 3.0g of the solution was used for light vibration adsorption degradation, wherein the intensity of light was 20Lux, the temperature of vibration adsorption degradation was 37°C, the oscillation speed of vibration adsorption degradation was 160r / min, and the time of vibration adsorption degradation was 72h.

[0048] (3) After the vibration adsor...

Embodiment 3

[0052] A method for treating landfill leachate with a photocatalytic biosorbent of the present invention, comprising the following steps:

[0053] (1) Dilute the original landfill leachate with ultrapure water to obtain landfill leachate with a certain initial concentration of TOC, and the initial TOC concentration can be 240mg / L.

[0054] (2) Add the photocatalytic biosorbent obtained in Example 1 to the landfill leachate with an initial concentration of TOC obtained in step (1), and the amount of photocatalyst biosorbent added is respectively 100 mL of landfill leachate with photocatalytic biosorbent Adsorbents of 2.0g, 3.0g, and 4.0g were subjected to light oscillation adsorption degradation, where the intensity of light was 20Lux, the temperature of oscillation adsorption degradation was 37°C, the oscillation speed of oscillation adsorption degradation was 160r / min, and the time of oscillation adsorption degradation was 72h.

[0055] (3) After the vibration adsorption deg...

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Abstract

The invention discloses a method for treating landfill leachate with a photocatalytic biological adsorbent, which includes the following steps: mixing the photocatalytic biological adsorbent with the landfill leachate to perform light oscillation adsorption and degradation to complete the treatment of the landfill leachate; photocatalytic biological adsorbent Adsorbents include P. chrysosporium pellets, graphite type C 3 N 4 and calcium alginate, graphite type C 3 N 4 Calcium alginate is used to coat the hyphae of P. chrysosporium cocci. The method of the present invention has the advantages of low cost, simple operation, short cycle, easy separation, etc., and has a good adsorption and degradation effect on organic pollutants in landfill leachate.

Description

technical field [0001] The invention belongs to the field of landfill leachate treatment, and relates to a landfill leachate treatment method, in particular to a method for treating landfill leachate with a photocatalytic biosorbent. Background technique [0002] Landfill leachate has the characteristics of high content of TOC, COD, heavy metals and ammonia nitrogen, large chroma, toxicity, and high content of refractory biodegradable substances. It is currently an internationally recognized technical problem in sewage treatment. In recent years, the treatment methods of landfill leachate mainly include leachate pretreatment, main process treatment and advanced treatment, including ordinary physical and chemical pretreatment, common biochemical main process and rapidly developing advanced treatment technologies such as membrane separation and advanced oxidation. However, these methods have the disadvantages of complex process flow, high equipment requirements, and high cost....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34B01J20/24B01J20/30B01J27/24
CPCB01J20/046B01J20/22B01J20/24C02F3/34B01J27/24C02F2305/10B01J2220/4868B01J2220/4812B01J2220/4806B01J35/39
Inventor 胡亮曾光明陈桂秋万佳武海鹏张辰程敏杨江丽石江波曾靖雯
Owner HUNAN UNIV
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