Deep dehydration method for excess sludge of sewage treatment of beer manufacturing enterprises

A technology for the treatment of excess sludge and sewage, which is applied in the fields of food industry wastewater treatment, water/sludge/sewage treatment, sludge treatment, etc. The effect of production costs

Inactive Publication Date: 2017-12-08
YANJING BEER GUILIN LIQUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the invention can synergistically treat beer sludge and beer waste liquid, and remove the moisture in the sludge to 50-60%, it is cumbersome to modify the sludge
At present, there is no relevant report on the application of soot sludge to the dehydration of residual sludge after sewage treatment in beer production enterprises

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The excess sludge that needs to be discharged and disposed of after being treated by the sewage treatment system (the moisture content of the excess sludge is 99.1%) is injected into the concentration tank, and the supernatant is discharged after precipitation and concentration for 60 minutes, and then the supernatant is discharged after precipitation and concentration for 60 minutes. At this time, the moisture content of the sludge in the pool is 94.5%, then it is put into the conditioning tank, and the soot sludge (density is 776kg / m2) is added to the conditioning tank. 3 , the specific surface area is 5.654m 2 / g, the water absorption is 0.65 times of its own volume), the addition amount of the soot sludge is calculated by the absolute dry weight, and the addition amount is controlled to be 20% of the absolute dry weight of the sludge. The feeding time is 240min, and the feeding volume is 6m 3 , after feeding, start the oil cylinder to carry out pressure filtration,...

Embodiment 2

[0027] The excess sludge that needs to be discharged and disposed of after being treated by the sewage treatment system (the moisture content of the excess sludge is 99.3%) is injected into the concentration tank, and the supernatant is discharged after precipitation and concentration for 60 minutes, and then the supernatant is discharged after precipitation and concentration for 60 minutes. At this time, the moisture content of the sludge in the pool is 94.9%, then it is put into the conditioning tank, and the soot sludge (density is 750kg / m2) is added to the conditioning tank. 3 , with a specific surface area of ​​5.5m 2 / g, the water absorption is 0.5 times of its own volume), the addition amount of the smoke sludge is calculated by the absolute dry weight, and the addition amount is controlled to be 15% of the absolute dry weight of the sludge. The feeding time is 200min, and the feeding volume is 6m 3 , after the feeding ends, start the oil cylinder to carry out pressure...

Embodiment 3

[0029] The excess sludge that needs to be discharged and disposed of after being treated by the sewage treatment system (the moisture content of the excess sludge is 99%) is injected into the concentration tank, and the supernatant is discharged after precipitation and concentration for 60 minutes. At this time, the moisture content of the sludge in the tank is 94.5 %, then put it into the conditioning tank, and add soot mud (density of 776kg / m2) to the conditioning tank 3 , the specific surface area is 5.654m 2 / g, the water absorption is 0.65 times of its own volume), the addition amount of the smoke sludge is calculated by the absolute dry weight, and the addition amount is controlled to be 25% of the absolute dry weight of the sludge. The feeding time is 180min, and the feeding volume is 6m 3 , after the feeding ends, start the oil cylinder to carry out pressure filtration, and the pressure filtration time is 20min.

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Abstract

The invention discloses a deep dehydration method for excess sludge of sewage treatment of beer manufacturing enterprises. The deep dehydration method is particularly characterized in that excess sludge needing to be discharged after treatment by a sewage treatment system is mixed with soot mud, uniform stirring is performed, and after that, the mixture is sent into a plate-and-frame filter press to be dehydrated to obtain sludge with the moisture content of being smaller than 60%, wherein the moisture content of the excess sludge is less than or equal to 95%; and the addition of soot mud is 15% or above of sludge by dry weight. The deep dehydration method achieves simple modification treatment of sludge, and is low in cost and good in dehydration effect.

Description

technical field [0001] The invention relates to a method for dewatering sludge, in particular to a method for deep dewatering of excess sludge in sewage treatment of beer production enterprises. Background technique [0002] After years of development, the sewage treatment process of beer production enterprises has gradually formed a two-stage comprehensive biological treatment model of "anaerobic + aerobic". Like the biological treatment of urban sewage, a large amount of excess sludge will also be generated during the biological treatment of brewery wastewater. The moisture content of the excess sludge is usually 95-99%. They need to be discharged from the sewage treatment system in time, otherwise it will cause the sewage treatment system The increase in energy consumption will also affect the normal operation of the sewage treatment system. The first and key step in the treatment of excess sludge is dehydration. The purpose of sludge dehydration is to reduce the moistur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F103/32
CPCC02F11/122C02F2103/325
Inventor 曾庆荣李继远
Owner YANJING BEER GUILIN LIQUAN
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