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Protein sludge deep dehydration method

A deep dehydration and sludge technology, applied in water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve problems such as difficult dehydration, secondary pollution, high viscosity, etc.

Active Publication Date: 2018-06-19
LINYI YUWANG VEGETABLE PROTEIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity of this protein sludge, dehydration is more difficult. It can only reduce the moisture content of the sludge to 85%, and further dehydration is more difficult.
Therefore, if the protein sludge is not handled properly, it will cause great pollution to the environment, and it may also cause secondary pollution.

Method used

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  • Protein sludge deep dehydration method

Examples

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Effect test

Embodiment 1

[0027] A method for deep dehydration of protein sludge, comprising the steps of:

[0028] Step 1: Pump the protein sludge with a water content of 98% to the sludge concentration tank for sludge concentration, and the water content will be reduced from 98% to 95%;

[0029] Step 2: The concentrated protein sludge flows into the temporary sludge storage tank by itself;

[0030] Step 3: Use the sludge pump to transport the protein sludge in the temporary storage tank to the pipeline mixer and mix it with 0.2% cationic polyacrylamide with a weight average molecular weight of 11 million, and then enter the screw stacker for dehydration, and the water content will drop from 95% to 85% %;

[0031] Step 4: The protein sludge from the screw stacker falls into the sludge temporary storage tank by itself;

[0032] Step 5: Use the sludge pump to send the protein sludge in the sludge temporary storage tank to the diaphragm plate and frame filter press for dehydration, and the water conten...

Embodiment 2

[0035] A method for deep dehydration of protein sludge, comprising the steps of:

[0036] Step 1: Pump the protein sludge with a water content of 99% to the sludge concentration tank for sludge concentration, and the water content will be reduced from 99% to 95%;

[0037] Step 2: The concentrated protein sludge flows into the temporary sludge storage tank by itself;

[0038] Step 3: Use the sludge pump to transport the protein sludge in the temporary storage tank to the pipeline mixer and mix it with 0.1% cationic polyacrylamide with a weight average molecular weight of 12 million, and then enter the screw stacker for dehydration, and the water content will drop from 95% to 85% %;

[0039] Step 4: The protein sludge from the screw stacker falls into the sludge temporary storage tank by itself;

[0040] Step 5: Use the sludge pump to send the protein sludge in the sludge temporary storage tank to the diaphragm plate and frame filter press for dehydration, and the water conten...

Embodiment 3

[0042] A method for deep dehydration of protein sludge, comprising the steps of:

[0043] Step 1: Pump the protein sludge with a water content of 98.5% to the sludge concentration tank for sludge concentration, and the water content is reduced from 98.5% to 94%;

[0044] Step 2: The concentrated protein sludge flows into the temporary sludge storage tank by itself;

[0045] Step 3: Use the sludge pump to transport the protein sludge in the temporary storage tank to the pipeline mixer and mix it with 0.3% cationic polyacrylamide with a weight average molecular weight of 9 million, and then enter the screw stacker for dehydration, and the water content will drop from 94% to 80% %;

[0046] Step 4: The protein sludge from the screw stacker falls into the sludge temporary storage tank by itself;

[0047] Step 5: Use the sludge pump to send the protein sludge in the sludge temporary storage tank to the diaphragm plate and frame filter press for dehydration, and the water content ...

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Abstract

A protein sludge deep dehydration method comprises the following steps: (1) protein sludge having a moisture content of 98% or more is transported to a sludge concentration tank, and the moisture content of the protein sludge concentrated by the sludge concentration tank is reduced to 95% or less; (2) the protein sludge concentrated by the sludge concentration tank enters a sludge temporary storage tank, and then is transported from the temporary storage tank to a pipeline mixer, a flocculant is added and mixed uniformly with the protein sludge, then the protein sludge enters a stacking-screwsludge dehydration machine for dehydration, and the moisture content of the protein sludge dehydrated by the stacking-screw sludge dehydration machine is reduced to 85% or less; (3) the protein sludgedehydrated by the stacking-screw sludge dehydration machine is dropped into the sludge temporary storage tank, and transported into a diaphragm type plate and frame filter press to be dehydrated, andthe moisture content of the protein sludge filtered through the diaphragm type plate frame filter press is reduced to 50% or less. The method can realize deep dehydration of the protein sludge.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a method for deep dehydration of protein sludge. Background technique [0002] With the improvement of people's living standards, great changes have taken place in people's dietary structure, the intake of protein per capita is increasing day by day, and because animal protein contains cholesterol, long-term consumption can easily induce diseases such as cardiovascular and cerebrovascular diseases, obesity, etc. The intake of vegetable protein is more important. [0003] Among the many vegetable proteins, soy protein (also known as soybean protein) has the highest nutritional value. Soybean protein powder is obtained from low-temperature defatted soybean meal through extraction, separation, enzymatic hydrolysis, spray drying and other steps. Enzymatic hydrolysis can decompose large molecular protein molecular chains into small molecular proteins, which are e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12C02F103/32
CPCC02F11/12C02F11/122C02F2103/322
Inventor 马军石真勇崔玉涛石善勇
Owner LINYI YUWANG VEGETABLE PROTEIN
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