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A kind of sludge treatment method of urban sewage treatment plant

A technology for urban sewage and treatment methods, which is applied in water/sludge/sewage treatment, sludge treatment, biological sludge treatment, etc. characteristics, improve the economic efficiency of enterprises, and reduce the effect of processing costs

Active Publication Date: 2016-08-24
徐明好
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many factors restricting the construction of sludge treatment and disposal facilities, but one of the important restrictive factors is that the overall technical route of national sludge treatment and disposal is not clear enough

Method used

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  • A kind of sludge treatment method of urban sewage treatment plant

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Comparison scheme
Effect test

Embodiment 1

[0022] The treatment method of a kind of urban sewage treatment plant sludge of the embodiment 1 of the present invention is to satisfy the sludge produced by the exposed rivers and lakes in the cities and towns as a premise, and it is to treat the sludge according to dehydration modification and heavy metal treatment. The process steps are processed in a harmless manner, and the treated sludge meets the national pollutant control standards for agricultural sludge.

[0023] Its described dehydration modification step is:

[0024] ①Activation modifier: Weigh the amount of powder modifier used at one time according to the ratio of 0.05% of the weight of the sludge in a single treatment, and then weigh it according to the ratio of powder modifier usage to water ratio of 1:1.1 Take tap water and put it in a container and stir it evenly with the powdered modifier, and let it stand for 18 hours;

[0025] ② Dilute the modifier: add tap water with a weight ratio of 1:15 to the liquid...

Embodiment 2

[0032] A treatment method for urban sewage treatment plant sludge applicable to the condition of external air temperature T>20°C in Example 2 of the present invention is to carry out harmless treatment of urban sewage treatment plant sludge according to the process steps of dehydration modification and heavy metal treatment. Chemical processing, the processed sludge is distilled to extract mixed crude oil, and ammonium carbonate is extracted. The treated sludge meets the pollutant control standards in agricultural sludge.

[0033] Its described dehydration modification step is:

[0034] ①Activation modifier: Weigh the amount of powdered modifier used at one time according to the ratio of 0.08% of the weight of the sludge in a single treatment, and then weigh it according to the ratio of the amount of powdered modifier used to water as 1:1.3 Take tap water and put it in the container and stir it evenly with the powder modifier, and let it stand for 24 hours;

[0035] ② Dilute ...

Embodiment 3

[0044] The third embodiment of the present invention is applicable to the treatment method of urban sewage treatment plant sludge under the condition of external air temperature T<20°C, which is to make the urban sewage treatment plant sludge harmless according to the process steps of dehydration modification and heavy metal treatment Processing and treatment, the treated sludge is distilled to extract mixed crude oil and ammonium carbonate. The treated sludge meets the pollutant control standards in agricultural sludge.

[0045] Its described dehydration modification step is:

[0046] ① Activator: Weigh the amount of powdered modifier used at one time according to the ratio of 0.1% of the weight of the sludge in a single treatment, and then weigh it according to the ratio of the amount of powdered modifier used to water as 1:1.2 Tap water and put it in the container and stir it evenly with the powder modifier, and let it stand for 20 hours;

[0047] ② Dilute the modifier: ad...

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Abstract

The invention discloses a treatment method for sludge in a municipal sewage treatment plant and belongs to the technical field of sludge treatment. The technical scheme adopted by the treatment method is as follows: the treatment method is characterized in that sludge in the municipal sewage treatment plant is subjected to harmless processing and treatment through the processing steps of dehydration, modification and heavy metal treatment, and treated sludge conforms to the national pollutant control standard of agricultural sludge. Compared with the prior art, the treatment method is novel, reliable and free of secondary pollution, changes waste into valuable, realizes harmless treatment of sludge, realizes the outstanding substantial characteristic of resourceful treatment and makes remarkable progress.

Description

technical field [0001] The invention relates to the technical fields of chemical engineering and environmental protection, in particular to the technical field of a method for treating sludge from urban sewage treatment plants. Background technique [0002] In recent years, with the rapid improvement of my country's sewage treatment capacity, the amount of sludge has also increased significantly. As of the end of March 2013, a total of 3,451 urban sewage treatment plants have been built in cities and counties across the country, with a sewage treatment capacity of about 145 million cubic meters per day, and an annual output of more than 35 million tons of sludge with a water content of 80%. The number of sewage treatment plants will be increased incrementally. According to statistics, about 80% of sewage plants have sludge concentration and dehydration facilities, which have achieved a certain degree of reduction. However, about 80% of the sludge has not been stabilized. P...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00
CPCC01C1/26C02F11/004C02F11/02C02F11/14C02F11/18C02F2101/20C02F2303/06C10G1/00C10G2300/1003
Inventor 徐明好
Owner 徐明好
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