Innocent treatment method for endotoxin-containing sludge in sewage treatment plant

A sewage treatment plant and harmless treatment technology, applied in the field of environmental pollution control, can solve problems such as high cost and secondary pollution, and achieve the effects of reducing endotoxin, good purification effect, and good killing effect

Active Publication Date: 2021-06-08
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, although a variety of sludge treatment and disposal methods have been developed, most of them have problems su

Method used

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  • Innocent treatment method for endotoxin-containing sludge in sewage treatment plant
  • Innocent treatment method for endotoxin-containing sludge in sewage treatment plant
  • Innocent treatment method for endotoxin-containing sludge in sewage treatment plant

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] Such as figure 1 As shown, a method of sewage treatment plant contains endotoxin sludge harmless treatment, according to the following steps:

[0028] First, the pulverization treatment of the mild magnesium ore was collected, and the coarse magnesium mine sand was collected, and the granules of the granularity of 30 mm or less were broken, and then the roller pulverizer was further broken into small particles below 2 mm or less. Ore; then collecting water-containing collection, collecting the water content of the water treatment plant at 80% or more, placing it in the mud water conditioning tank; then adding a catalyst, adding the mass of muddy mixture in the mud water conditioning pool 2% magnesium mine sand, with a frame mixer, a rotational speed of 5 rpm, continuously stirred for 2 h; then add an oxidant again, slowly adding a single hydrazine hydrogen hydrogen potassium hydrogen hydrogen hydrogen hydrogen hydrogen hydrogen hydrogen hydrolycal hydroge...

Example Embodiment

[0029] Example 2

[0030] The treatment plant of a city's living sewage treatment plant in Beijing is disposed of by the method according to the method described in Example 1. The results are as follows:

[0031]

[0032]

Example Embodiment

[0033] Example 3

[0034] In Example 1, the sewage treatment plant in Xingtai City was treated with anahytic chemical sludge, as follows:

[0035] Contaminant concentration Endotoxin (EU / g) Total bacteria (MPN / KG) Organic matter (%) Before processing 6700 4.4×10 4

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Abstract

The invention relates to the technical field of sludge treatment, in particular to a harmless treatment method for sludge in an urban sewage treatment plant. The invention provides a sludge harmless treatment method which comprises the following steps of: firstly, fully mixing water-containing sludge with magnesite powder, adding potassium monopersulfate composite salt, fully aerating the sludge, introducing the sludge into a reactor with a UV-C ultraviolet lamp for continuous digestion, and finally dehydrating and drying the obtained clean sludge. The sludge harmless treatment method is simple in process, controllable in cost and thorough in harmless treatment, development and application of finally obtained clean sludge powder are facilitated, and the obtained sludge powder can be used for manufacturing cement, bricks, tiles, fertilizers and the like.

Description

technical field [0001] The invention relates to the technical field of environmental pollution control, in particular to a method for harmless treatment of endotoxin-containing sludge in a sewage treatment plant. Background technique [0002] At present, the total amount of sewage treatment in my country is about 200 million tons per day, and the amount of wet sludge produced is roughly 200,000 tons per day, which is a huge output. Due to the long-standing phenomenon of heavy water and light mud in the water treatment industry, about 30 million tons of sludge produced in my country every year have not been properly disposed of. Most of these sludge come from biological sludge in the process of biochemical water treatment, potentially with A large amount of biological pollutants such as endotoxins, according to literature reports, workers who have been exposed to biochemical sludge or mud-water mixtures for a long time have a higher risk of endotoxin exposure, and improper dis...

Claims

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Application Information

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IPC IPC(8): C02F11/06C02F11/121C02F11/00C02F11/02
CPCC02F11/004C02F11/06C02F11/121C02F11/02C02F11/00C02F2303/04
Inventor 殷立峰代云容张圆正刘双段存戌
Owner BEIJING NORMAL UNIVERSITY
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