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A method of producing calcium sulfate whiskers using high chloride wastewater produced in bone gelatin production

A high-chloride, bone gelatin technology, applied in chemical instruments and methods, single crystal growth, single crystal growth, etc., can solve the problems of cell dehydration, microbial death, plasmolysis, etc., to ease the mining pressure, and the process is simple , the effect of short cycle

Active Publication Date: 2022-06-28
NINGXIA XINHAOYUAN BIOLOGICAL POLYTRON TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the concentration of chloride ions in the aqueous solution is above 5000 mg / L, the osmotic pressure will increase to about 10-30 atmospheric pressure. Loss of water leads to plasmolysis, and in severe cases, microorganisms die

Method used

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  • A method of producing calcium sulfate whiskers using high chloride wastewater produced in bone gelatin production
  • A method of producing calcium sulfate whiskers using high chloride wastewater produced in bone gelatin production
  • A method of producing calcium sulfate whiskers using high chloride wastewater produced in bone gelatin production

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1. the method for producing calcium sulfate whisker from high chloride waste water

[0041] 1) get 37.5L high chlorine root waste water and pour it into the bucket, add lime milk (specific gravity 1.18) 750ml to adjust pH value 7.0, obtain to-be-treated liquid;

[0042] 2) Add 180ml of flocculant PAC (10%) to the liquid to be treated in step 1), stir for 5s, add 18ml of flocculant PAM (0.1%), and stir for 10s to obtain a flocculation liquid;

[0043] 3) filtering the flocculation liquid of step 2) with a 300-mesh filter bag to collect the flocculation filtrate;

[0044] 4) filter the flocculation filtrate collected in step 3) with 2KD-3KD organic membrane equipment, collect 34L of filtered clear liquid, detect COD2045ppm, calcium chloride content at 61.1g / L

[0045] 5) Take 1000ml of the clear liquid collected in step 4) in a 2000ml beaker and heat and boil on an electric furnace, measure the temperature at 92°C, cover the beaker with a rubber plate and leave ...

Embodiment 2

[0051] Example 2. Method for producing calcium sulfate whiskers from high chloride wastewater.

[0052] The difference from Example 1 is that it goes directly to the next step without going through the aging process.

[0053] 1) Take 1000ml of the clear liquid collected in step 4) of Example 1 and heat and boil on an electric furnace in a 2000ml beaker, record the temperature at 92°C, cover the beaker with a rubber plate and leave a feeding hole, and set the stirring speed to slowly increase it under the condition of 120rpm. Add 19ml of 96% sulfuric acid solution, heat and react to obtain a salt solution containing calcium sulfate;

[0054] 2) The calcium sulfate salt solution obtained in step 1) was directly filtered with a suction filter bottle, and about 1000ml of clear liquid was collected, which was recyclable (soaked bone meal), and the hydrochloric acid content was detected at 3.72%; the obtained crystal was washed with 300ml of clear water at 50°C Twice, 150ml each; a...

Embodiment 3

[0056] Embodiment 3. The method for producing calcium sulfate whisker from high chloride waste water

[0057] 1) get 1000ml high chloride root waste water and pour it into a 2000ml beaker, add 20ml of lime milk (specific gravity 1.18) to adjust the pH value to 7.0, and obtain the liquid to be treated;

[0058] 2) Passing 5ml of flocculant PAC (10%) to the liquid to be treated in step 1, stirring for 5s, and adding 0.5ml of flocculant PAM (0.1%), stirring for 10s, to obtain a flocculation liquid;

[0059] 3) filtering the flocculation liquid of step 2) with a 300-mesh filter bag to collect the flocculation filtrate;

[0060] Detection of COD1989ppm, calcium chloride content of 61.9g / L

[0061] 4) The flocculation filtrate collected in step 3) was heated and boiled on an electric furnace, the temperature was measured at 91°C, the beaker was covered with a rubber plate and a feeding hole was left, and 19ml of 96% sulfuric acid solution was slowly added to it under the condition ...

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Abstract

The invention provides a method for producing calcium sulfate whiskers by using high-chloride wastewater in bone gelatin production. The high-chloride wastewater is pretreated by flocculation and membrane filtration to obtain low COD and a calcium chloride content of 60g / L. ‑80g / L of the liquid to be treated, adding sulfuric acid solution therein, the suspension obtained by the reaction is aged, filtered, washed, and dried to finally obtain calcium sulfate dihydrate whiskers. The present invention aims at the problems of high treatment cost and difficulty in biochemical treatment brought by the high-chloride wastewater generated in the gelatin production process to industrial sewage treatment, and is applicable to the recovery and reuse of the high-chloride wastewater generated in the gelatin production process, that is, to expand The production method of calcium sulfate whiskers is improved, and it has the advantages of simple process, high waste utilization rate, energy saving and environmental protection.

Description

technical field [0001] The invention relates to the production field of calcium sulfate crystal whiskers, in particular to a method for producing calcium sulfate crystal whiskers by using high chloride wastewater generated in the production of bone gelatin. Background technique [0002] The bone gelatin industry has a history of about 200 years. Gelatin is a protein extracted from the connective tissue (skin and bone) of animals. It is a water-soluble, gelatinous colloidal substance. The unique structural characteristics determine that gelatin plays an irreplaceable and important role in the fields of food, pharmaceutical packaging (capsule shell, tablet sugar coating) and other fields. my country's gelatin industry is in a period of rapid development, and the market capacity is also rapidly expanding. With the rapid development of domestic pharmaceutical, capsule, food, health care and cosmetics industries, the demand for gelatin will continue to grow, especially bone gela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B7/14C30B29/62C30B29/46
CPCC30B7/14C30B29/62C30B29/46
Inventor 文建军刘明璨王欢罗德慧
Owner NINGXIA XINHAOYUAN BIOLOGICAL POLYTRON TECH INC
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