CN1236736A - Process for treating sewage from fish powder production - Google Patents
Process for treating sewage from fish powder production Download PDFInfo
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- CN1236736A CN1236736A CN 99112084 CN99112084A CN1236736A CN 1236736 A CN1236736 A CN 1236736A CN 99112084 CN99112084 CN 99112084 CN 99112084 A CN99112084 A CN 99112084A CN 1236736 A CN1236736 A CN 1236736A
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- Prior art keywords
- protein
- sewage
- powder production
- fish powder
- solution
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Abstract
A process for extracting protein and oil from the sewage drained during the production of fish powder includes such steps as diluting said sewage in diluting stirrer, regulating its concentration and pH value, adding enzyme to convert the high-molecular components to protein soluble in water or peptone, separating oil, impurities and protein solution from each other to obtain protein solution, desalting, concentrating, and spray drying to obtain powdered protein, which can be used to prepare flavouring, food additive, peptone or feed additive.
Description
The invention discloses and extract protein and greasy method in a kind of sewage from the fish meal production process, is the treatment process of sewage from fish powder production specifically.
We know, in the fish meal production process, produce a large amount of following water, the main source of following water is, squeezing flowing water or fish pump after the fish boiling, unload the raw material fish, flowing water in cleaning equipment and work ground and these routine works of raw material fish storehouse, contain solid substance (fish fragment) in the following water, protein, grease and salt, sand, impurity such as sea grass, if will descend water directly to discharge, to cause Organic pollutants and worsen environment, so the hydromining that will descend that has will descend a part of water in the water to discharge the Nature with the double-effect evaporation mode, also have by descending a part of water discharging the Nature in the water after the filtration of film engineering, title sewage from fish powder production under the residue, sewage from fish powder production have become a difficult problem of handling, and the producer that has mixes it in fish meal, make fish meal be difficult to oven dry, cause the fish meal quality product inferior, it is outwelled by the producer that has, and causes environmental pollution and financial loss.
Purpose of the present invention is exactly in order to overcome the deficiencies in the prior art, provide a kind of method simply, both free from environmental pollution, can receive the fish powder sewage treatment method of better economic benefit again.
For achieving the above object, the present invention can reach by following measure:
(1) the sewage from fish powder production dilution is stirred, regulate the concentration and the pH value of sewage from fish powder production, concentration requirement solid content 5%-25%, pH value requires 6.5-7.5,
(2) add protein decomposition enzyme, decompose the polymer composition in the above-mentioned solution, it is become can freeze by water-soluble protein or albumen, with the molecular weight control in the solution below 100000.
(3) grease, impurity and protein solution are separated.
(4) protein solution is carried out desalting treatment.
(5) protein soln after the desalination is concentrated.
Technology of the present invention is simple, can be effectively with contain protein in the sewage from fish powder production in the fish meal production process, grease extracts, not only protected ecotope but also can receive certain economic benefits.
Below the present invention is described further:
1, sewage from fish powder production is diluted, interlayer or coiled pipe are arranged in can adopting, mixing speed is 60-80 rev/min a dilution stirred pot, it is even to make it concentration, the add-on of water should be looked the concentration of sewage from fish powder production and be determined, concentration requirement is solid content 5%-25%, regulates its pH value, and making its pH value is 6.5-7.5.
2, add protein decomposition enzyme, decompose the polymer composition in the above-mentioned solution, it is become can freeze by water-soluble protein or albumen, the add-on of enzyme is specific down also, decide according to polymer composition amount in the solution, below 100000, enzyme can once add or add several times the molecular weight control of solution.
3, again the grease in the above-mentioned solution, impurity and protein solution are separated, in characteristics such as water, suspensions, adopt the garden cartridge type to connect whizzer grease is separated, make oil and fat product, protein solution is separated according to the oil ratio heavy and light.The present invention also can be according to the oil ratio heavy and light after characteristics such as water, suspension be separated grease, enzyme carries out polymer composition in the decomposing solution on one side, solution passes through strainer on one side, the best molecular weight that uses in the strainer should be controlled at the liquid below 100000, above-mentioned said strainer can adopt the film engineering, its transudate is a protein solution, and promptly impurity such as protein solution and sand, sea grass are separated.
4, protein solution is carried out desalting treatment, can adopt the electrodialysis method to carry out desalting treatment, also can adopt biological process to carry out desalting treatment as utilizing the polymer exchange resin, when adopting the electrodialysis method to carry out desalting treatment, above-mentioned protein solution is imported in the electrodialysis case, according to the electrodialysis time is determined in the requirement of protein soln saltiness, if require protein solution low salinity, then corresponding length of electrodialysis time.
5, the protein solution after the desalination is concentrated as required or carry out spraying drying, make that protein concentrates liquid or, electrodialysis liquid is carried out discharging the Nature after the conventional water treatment at the powdered protein product of spray-drying tower inner drying.
After the present invention handled sewage from fish powder production, the protein that obtains concentrated liquid or protein powder, can be applied to seasonings, foodstuff additive, albumen freezes or fodder additives.Promptly protect environment not contaminated, can receive favorable economic benefit again.
Claims (2)
1, a kind of treatment process of sewage from fish powder production is characterized in that:
(1) the sewage from fish powder production dilution is stirred, regulate the concentration and the pH value of sewage from fish powder production, concentration requirement is solid content 5%-25%, and pH value is 6.5-7.5,
(2) add protein decomposition enzyme, decompose the polymer composition in the above-mentioned solution, with the molecular weight control in the solution below 100000.
(3) grease, impurity and protein solution are separated.
(4) protein solution is carried out desalting treatment.
(5) protein solution after the desalination is concentrated.
2, the treatment process of a kind of sewage from fish powder production according to claim 1 is characterized in that said protein solution is carried out desalting treatment is to adopt the electrodialysis method to handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99112084 CN1236736A (en) | 1998-02-27 | 1999-02-08 | Process for treating sewage from fish powder production |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98110079.1 | 1998-02-27 | ||
| CN98110079 | 1998-02-27 | ||
| CN 99112084 CN1236736A (en) | 1998-02-27 | 1999-02-08 | Process for treating sewage from fish powder production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1236736A true CN1236736A (en) | 1999-12-01 |
Family
ID=25744661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99112084 Pending CN1236736A (en) | 1998-02-27 | 1999-02-08 | Process for treating sewage from fish powder production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1236736A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105495658A (en) * | 2015-12-04 | 2016-04-20 | 杭州上拓环境科技有限公司 | Fish meal production system based on membrane treatment technology |
| CN107041121A (en) * | 2015-08-17 | 2017-08-11 | 贝纳莱斯 费尔南多·里卡多·里包多 | Method for producing the dehydrated food with high content protein hydrolysate from stickwater |
-
1999
- 1999-02-08 CN CN 99112084 patent/CN1236736A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107041121A (en) * | 2015-08-17 | 2017-08-11 | 贝纳莱斯 费尔南多·里卡多·里包多 | Method for producing the dehydrated food with high content protein hydrolysate from stickwater |
| CN105495658A (en) * | 2015-12-04 | 2016-04-20 | 杭州上拓环境科技有限公司 | Fish meal production system based on membrane treatment technology |
| CN105495658B (en) * | 2015-12-04 | 2017-12-19 | 杭州上拓环境科技股份有限公司 | A kind of fish meal production system based on membrane technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |