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Methods of Improving the Dryness of Biomass Sludge

A biomass and sludge technology, which is applied in biological sludge treatment, sludge treatment, chemical instruments and methods, etc., can solve the problems of not being able to meet normal production, dripping on the road surface, and low dryness of sludge, and achieve increased Machine operation efficiency, effect of preventing lock-up

Active Publication Date: 2019-11-05
ANHUI GEYI CYCLIC ECONOMY IND PARK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the process of concentrating and dewatering through the spiral biomass sludge dewatering machine, there are the following disadvantages: ① Reduce the operating frequency of the spiral biomass sludge dewatering machine and increase the dryness of the sludge, which often fails to reach the process index of 35%. The dryness can only be increased to 30%; ②The reduction in operating frequency leads to poor operating efficiency of the spiral biomass sludge dewatering machine, which cannot meet normal production; It is easy to generate sewage and drip on the road surface, resulting in poor sanitation of the working environment
Therefore, there are still deficiencies such as low mud dryness, high processing cost, and low efficiency in the prior art, which cannot meet the needs of the growing energy-saving economy.

Method used

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  • Methods of Improving the Dryness of Biomass Sludge
  • Methods of Improving the Dryness of Biomass Sludge
  • Methods of Improving the Dryness of Biomass Sludge

Examples

Experimental program
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Effect test

Embodiment 1

[0042] (1) Add plant pulverized material and cellulose mud to the biomass sludge to carry out conditioning of the biomass sludge;

[0043] (2) Then add polyacrylamide cationic solution and mix to carry out biomass sludge flocculation;

[0044] (3) Finally, the double-screw pre-dehydration treatment is performed, and then the single-screw pressing dehydration treatment is obtained.

[0045] In the step (1), the addition amount of the crushed plant material is 300kg, calculated by weight per ton of absolute dry mud.

[0046] The addition amount of cellulose mud in step (1) is 50kg, by the weight of every ton of absolute dry mud.

Embodiment 2

[0048] (1) Add plant pulverized material and cellulose mud to the biomass sludge to carry out conditioning of the biomass sludge;

[0049] (2) Then add polyacrylamide cationic solution and mix to carry out biomass sludge flocculation;

[0050] (3) Finally, the double-screw pre-dehydration treatment is performed, and then the single-screw pressing dehydration treatment is obtained.

[0051] In the step (1), the addition amount of the crushed plant material is 10kg, calculated by weight per ton of absolute dry mud.

[0052] The addition amount of cellulose mud in step (1) is 10kg, by the weight of every ton of absolute dry mud.

Embodiment 3

[0054] (1) Add plant pulverized material and cellulose mud to the biomass sludge to carry out conditioning of the biomass sludge;

[0055] (2) Then add polyacrylamide cationic solution and mix to carry out biomass sludge flocculation;

[0056] (3) Finally, the double-screw pre-dehydration treatment is performed, and then the single-screw pressing dehydration treatment is obtained.

[0057] In the step (1), the addition amount of the crushed plant material is 600kg, calculated by weight per ton of absolute dry mud.

[0058] The addition amount of cellulose mud in step (1) is 100kg, by the weight of every ton of absolute dry mud.

[0059] The specific operation steps are as follows:

[0060] 1. Sludge tempering tank: The construction location is on the first floor of the sludge dewatering machine room. The specification is 4m long x 4m wide x 3.5m high. There is a round hole with a diameter of 1.5m on the second floor right above it. The agitator in the sludge conditioning ta...

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Abstract

The invention belongs to the technical field of sludge treatment, and in particular relates to a method for improving the dryness of biomass sludge. The method comprises the following steps: adding a crushed plant material and cellulose mud into the biomass sludge to perform tempering on the biomass sludge; then adding a polyacrylamide cation solution to perform flocculation on the biomass sludge after mixing; and finally, performing spiral dehydration. The treatment method of the biomass sludge, provided by the invention, aims at the situation that the running frequency of a single-screw press dehydrator needs to be reduced to improve the dryness of discharged sludge when the sludge contains a low content of fiber or no fiber. As everyone knows, light straw ashes are treated as leftovers, and by using crushed structures and properties of plants, the sludge after flocculation can be gathered together more easily, and the friction force of the sludge after pre-dehydration in the single-screw press dehydrator is increased.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a method for improving the dryness of biomass sludge. Background technique [0002] A large amount of sludge is produced in the comprehensive utilization of biomass resources and papermaking industries, and the existence of these sludges brings a huge burden to the ecological environment. To this end, the country has also issued a series of policies and plans to promote and promote the industrialization and marketization of my country's sludge treatment technologies and processes. Sludge treatment will receive more and more attention, and is expected to enter a stage of rapid growth driven by policies. [0003] Generally, sludge treatment includes sedimentation, gravity concentration, dehydration, drying and other treatments. Afterwards, the dried sludge is further decontaminated. In terms of concentration and dehydration to reduce sludge, according to sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/147C02F11/121
CPCC02F11/00C02F11/02C02F11/125
Inventor 朱有刘湘逸周婉莹黄裔王涛
Owner ANHUI GEYI CYCLIC ECONOMY IND PARK
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