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Low-molecular-weight pectin composite flocculant and online extraction process thereof

A low-molecular-weight pectin and composite coagulation technology, which is applied in the direction of flocculation/sedimentation water/sewage treatment, can solve the problems of unfavorable solid-liquid separation, affecting the quality of pectin, and wasting energy, so as to reduce equipment investment and site occupancy, Reduce the cost of sewage treatment, good coagulation effect

Active Publication Date: 2014-05-21
重庆檬泰生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. In the process, thermal concentration or membrane concentration process is used to enrich the low-molecular-weight pectin in the waste liquid, and then the pectin is extracted by spray drying or coagulation by adding a coagulant. This method consumes a lot of energy and the extraction High cost, not conducive to the actual production
[0009] 2. The low-molecular-weight pectin coagulant used is ferric sulfate, aluminum sulfate and alcohols, etc., the cost is high, there is a safety hazard when used, and the residue will affect the quality of pectin
[0010] 3. The coagulant used and the canned processing waste liquid need to react for a long time under heating conditions before they can coagulate with low-molecular-weight pectin. The coagulation process wastes energy, and the process is time-consuming and takes up a lot of space, which is not conducive to actual industrialization Production
[0011] 4. The condensate formed by the coagulant and low-molecular-weight pectin is loose, which is not conducive to solid-liquid separation, and the recovery of low-molecular-weight pectin is difficult

Method used

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  • Low-molecular-weight pectin composite flocculant and online extraction process thereof
  • Low-molecular-weight pectin composite flocculant and online extraction process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The online extraction process 1 of low-molecular-weight pectin in citrus canned processing waste liquid comprises the following steps in sequence:

[0040] a) Neutralization: mix the acid solution and lye solution of the citrus peeled coat in the neutralization tank, and adjust the pH value of the mixed solution to neutral;

[0041] b) Coarse filtration: filter the mixed solution with an 80-mesh filter to remove coarse impurities such as tangerine and capsule fragments;

[0042] c) Preparation of composite coagulant solution: by mass parts, 95 parts of calcium chloride and 5 parts of magnesium chloride are mixed to make composite coagulant; then by mass parts, 70 parts of water and 30 parts of composite coagulant are mixed with Made into an aqueous solution for use;

[0043] d) Online addition of composite coagulant solution: use a jet pump to add online according to the ratio of the solid mass of composite coagulant to 0.05% of the total mass of canned citrus waste li...

Embodiment 2

[0049] The online extraction process 2 of low-molecular-weight pectin in canned citrus processing waste liquid includes the following steps in sequence:

[0050] a) Neutralization: mix the acid solution and lye solution of the citrus peeled coat in the neutralization tank, and adjust the pH value of the mixed solution to neutral;

[0051] b) Coarse filtration: filter the mixed solution with a 100-mesh filter to remove coarse impurities such as tangerine and capsule fragments;

[0052]c) Preparation of composite coagulant solution: by mass parts, 80 parts of calcium chloride and 20 parts of magnesium chloride are mixed to make composite coagulant; then by mass parts, 70 parts of water and 30 parts of composite coagulant are mixed with Made into an aqueous solution for use;

[0053] d) Online addition of composite coagulant solution: use a jet pump to add online according to the ratio of the solid mass of composite coagulant to 0.03% of the total mass of canned citrus waste liq...

Embodiment 3

[0059] The online extraction process 3 of low-molecular-weight pectin in canned citrus processing waste liquid includes the following steps in sequence:

[0060] a) Neutralization: mix the acid solution and lye solution of the citrus peeled coat in the neutralization tank, and adjust the pH value of the mixed solution to neutral;

[0061] b) Coarse filtration: filter the mixed solution with a 120-mesh filter to remove coarse impurities such as tangerine and capsule fragments;

[0062] c) Preparation of composite coagulant solution: by mass parts, 90 parts of calcium chloride and 10 parts of magnesium chloride are mixed to make composite coagulant; then by mass parts, 80 parts of water and 20 parts of composite coagulant are mixed with Made into an aqueous solution for use;

[0063] d) Online addition of composite coagulant solution: use a jet pump to add online according to the ratio of the solid mass of composite coagulant to 0.08% of the total mass of canned citrus waste li...

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Abstract

The invention relates to a low-molecular-weight pectin composite flocculant which comprises the following components in parts by mass: 80-100 parts of calcium chloride and 20-0 parts of magnesium chloride, wherein the sum of the parts of the two components is 100. The low-molecular-weight pectin composite flocculant can be added in an online mode in production of canned citrus petals; by using the low-molecular-weight pectin composite flocculant, low-molecular-weight pectin in acid-base capsule-dressing-removing waste liquid in canned production can be rapidly condensed into a relatively tight condensation product so as to achieve online centrifugal separation; the low-molecular-weight pectin composite flocculant disclosed by the invention is good in condensation effect and low in cost, does not affect the quality safety of low-molecular-weight pectin, and has no adverse effects on the environment.

Description

technical field [0001] The invention belongs to the field of resource regeneration and utilization of waste water from food processing, and in particular relates to an online extraction technology of low-molecular-weight pectin in waste water from canned citrus processing. Background technique [0002] my country's current average annual production of canned citrus is about 400,000 tons. It is an important foreign exchange earning agricultural product in China and plays a decisive role in the healthy development of my country's citrus industry. [0003] The canned citrus processing industry is a high water-consuming industry. The water consumption per ton of canned food is about 50 tons. Based on the annual output of 400,000 tons of canned citrus, the annual waste water generated is nearly 20 million tons. The cost of treating this part of waste water is nearly 100 million Yuan Renminbi. The most difficult thing to deal with in the waste water is the waste liquid from the a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C08B37/06
Inventor 方修贵赵凯曹雪丹李嗣彪黄振东池广友
Owner 重庆檬泰生物科技有限公司
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