CN102849860B - Cyclic utilization method of wastewater from casein phosphoeptide production - Google Patents
Cyclic utilization method of wastewater from casein phosphoeptide production Download PDFInfo
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Abstract
The invention relates to a cyclic utilization method of wastewater in casein phosphoeptide production, comprising the following steps of: a, precipitating protein in wastewater from the casein phosphoeptide production; b, filtering wastewater by the use of an ultrafilter membrane; c, absorbing by active carbon and carrying out chromatography by ion exchange resin; and d, allowing intercepted water obtained from the step b to enter the step a for cycling treatment. With wastewater from the casein phosphoeptide production process used as a raw material and by the adoption of combined processes of inflation aggregation, centrifugal precipitation, membrane filtration, active carbon adsorption and ion exchange resin chromatography, industrial organic wastewater is used as a resource for comprehensive utilization, thus recycling water resources, fully recovering proteins in wastewater from production and realizing conversion from resource advantage to economic advantage. The technology provided by the invention is easy to control and stable, has a simple operation process, has good water treatment effects and high efficiency, and requires low equipment investment and operation cost. Themethod provided by the invention is environmentally friendly and energy-saving, had has good additional economic benefit. Its water treatment technology has a good application prospect in processing of wastewater from production of dairy product, casein and its highly processed products.
Description
Technical field
The present invention relates to wastewater treatment and utilization process in the foodstuff production.
Background technology
The land fresh water deficiency of the present whole world more than 60%, more than 40 national lack of water, 1/3 population can not get safety water supply, the more apparent scarcity of China's water resources, the occupancy volume of water resources only is that more seriously (Zhou Tong, reusing sewage are effective way [J] water supply and drainages that solves urban water shortage for world occupancy volume per person's 1/4, particularly northern area lack of water per capita, 2001,27 (1): 1-6).
Industry and sanitary wastewater are handled the state that reuse can be alleviated China's water resources shortage to a great extent, reduce sewage to the influence of environment.According to China " municipal sewage treatment and pollution prevention technique policy ", the sewage average treatment rate in national cities and towns in 2010 is not less than 50%, and the wastewater treatment rate of city's first class city is not less than 60%, and the wastewater treatment rate of key cities is not less than 70%.Therefore Industrial Wastewater Treatment and recycle be China's important composition of administering water resources (Shi Liandong etc., water treatment Application of Automatic Control present situation and development prospect, [J] Chinese water supply and drainage, vol.26, No.22,2010,105-109).
The Hezuo City is positioned at the west and south, Gansu Province, is the provincial capital, Tibetan Autonomous Prefecture of Gannan, Gansu Province, the Yellow River, urban district water system, many Yellow River mainstream such as the Taohe River, Daxiahe River and lattice river this city of flowing through.Wherein the lattice river is a tributary of Daxiahe River, is seasonal stream, 27 kilometers of total lengths, 4.2 kilometers in the cooperation urban district of flowing through.Monitoring data according to Gannan environmental monitoring station shows that in recent years, lattice river body pollution was serious, in the unprocessed or below standard discharging industrial sewage of a large amount of sanitary sewages and the milk-product manufacturing enterprise inflow stream, water quality descends year by year, and its principal pollutant are biochemical oxygen demand (BOD), ammonia nitrogen etc.Hezuo City government has strengthened environmental quality comprehensive improvement dynamics for this reason, strengthens source of pollution monitoring, environmental inspection and emergency capability construction.2009 Gansu Province " Gansu the Yellow River mainstream water pollution control project " obtain the state revenue support, " the Hezuo City sewage disposal of state, Gannan and regeneration project " wherein puts into operation and will effectively improve Hezuo City sewage collecting processing rate, and then promotes the Yellow River mainstream principal pollutant reduction of discharging work.
Membrane separation technique, but particularly ultra-filtration technique centering water and waste water carry out advanced treatment, effectively remove bacterium and intestinal bacteria in the water, remove SS, reduce the dissolving oil in pollutent such as BOD, COD and nitrogen phosphorus and the water, thus obtain better performances miscellaneous water water quality (old superfine, Al
2O
3-polysulfones composite hyperfiltration membrane is used for the research of water treatment, the 39th the 2nd phase of volume of [J] University Of Tianjin journal, 220-222).Gac is one of sorbent material of widespread use in the water treatment absorption method, in the advanced treatment and industrial sewage recycling project of Drinking Water, use charcoal absorption can remove the heavy metal ion in the water, organic and inorganic pollutant simply, effectively, economically, reduce COD in the former water and peculiar smell etc.The major advantage that gac is used aspect wastewater treatment is stable effluent quality, is used the effluent quality that can obtain to be of high quality with additive method.Even reach drinking water standard.(Shen Yuanwei etc., the gac application in water treatment, [J] Treatment of Industrial Water, VOl.27 No.4,2007,13-16).Ion exchange resin has been widely used in various water treatments and has comprised fields such as reactor water treatment, radioactive liquid offal treatment (Wang Guangzhu etc., water treatment powder ion exchange resin quality index discussion, [J] thermal power generation, Vol.39, No.4,2010,23-26).
Phosphopeptide caseinate production belongs to dairy products deep processing industry, mainly contains nutritive substance and part inorganic salt such as fat, protein, carbohydrate in its factory effluent.Present domestic wastewater from dairy production treatment process mainly adopts (Zhang Sheng etc. such as common shallow layer precipitating method, activated sludge process, biological filter process, biological contact oxidation process, chemical coacervating precipitation method and anaerobic-aerobic fermentation method, wastewater from dairy production is handled, [J] process water and waste water, Vol.38, No.2,2007,51-54).
Auspicious dairy products development corporation, Ltd. of state, Gannan section is series product such as raw material production edible casein food grade, Sodium Caseinate and phosphopeptide caseinate with " song draws " mainly, 100,000 tons of annual water loss.The organic concentration of factory effluent is higher relatively, contains organism 0.2%～0.5% such as protein, belongs to high concentrated organic wastewater, and average contamination index is SS:620mg/L, BOD
5: 1500mg/L, COD:4000mg/L, pH4.0-5.0.At present factory effluent adopts the common shallow layer precipitating technology can not efficient recovery albumen, and waste water can't recycle.
Present method is purpose with energy-saving and emission-reduction and environment protection; the treatment process of employing high-level efficiency, short flow process, automatization is removed waste water protein, fat, carbohydrate and other inorganicss in the phosphopeptide caseinate production; make the water quality after the processing reach clean water quality degree, recycle-water is capable of circulation to be produced for the casein food grade series product.Present method can improve the wastewater processing technology level in the milk-product processing industry, promotes casein food grade industrialized development and related industries resource circulation utilization, has the excellent popularization prospect at milk-product and casein food grade manufacturing enterprise.
Summary of the invention
" song draws " be the Tibetan area herdsman with milk spontaneous fermentation after, go out protein through thermal precipitation, make the yak coarse cheese then after the seasoning, be commonly called as " song draws ".Its main component is protein, and it is Tibetan area nomad's important foodstuffs source.
The object of the present invention is to provide the recycle method of waste water in a kind of milk-product deep processing production.It is the waste water that produces in the raw material production phosphopeptide caseinate process with " song draws " that present method adopts inflation aggegation, centrifugation, membrane filtration, charcoal absorption and resinbed to analyse the coupling art breading, and industrial organic waste water fully utilized as resource, the recycle water resources, fully reclaim the protein in the factory effluent, realize that resources advantage is to the conversion of economic benefit advantage.
The objective of the invention is to be achieved through the following technical solutions:
1, the recycle method of waste water during a kind of phosphopeptide caseinate is produced, its step is divided into:
A. waste water protein precipitation during phosphopeptide caseinate is produced
Waste water in the phosphopeptide caseinate production is added in the stainless steel vessel of adding a cover, feed pressurized air 30min with the 1.5L/min air flow under the normal temperature, leave standstill 30min then, allow the abundant coagulation sedimentation of protein gel, with the precipitation protein through 5000rmp centrifuging, the protein precipitation that reclaims is through 65 ℃, and albumen is reclaimed in 120mmHg vacuum-drying;
B. waste water hyperfiltration membrane filtration
Reclaim waste water behind the protein through the rolled film ultra-filtration filters, the film molecular weight upper limit≤1000 of damming, original pressure 12Bar, termination pressure 20Bar, circular flow 150～200ml/min, mean circulation time (MCT) 1.5～2h, 15 ℃ of water initial temperatures, 30 ℃ of loop termination temperature; Permeate water volume 〉=4250ml after ultrafiltration is finished;
C. charcoal absorption and resinbed are analysed
Permeate water 4250ml water after the b step process added to depress successively by active carbon adsorption column, positively charged ion and anion column chromatography at 2-5Bar handle, going out water flow velocity is 1000ml/h, the processing water 〉=4000ml that finally obtains;
The trap water of e, b step enters step a and carries out circular treatment again.
The beneficial effect of advantage of the present invention and generation is:
1, compared with the prior art, the present invention can make sewage in the dairy production, middle water treatment is more perfect, technological process is easy to control, stable, easy and simple to handle, processing efficiency is high, and environmental protection and energy saving more.
2, product application scope is wide.Water technology of the present invention is applicable to middle water and the wastewater treatment of milk-product, casein food grade and the deep processed product enterprise thereof of various scales.
3, the present invention has adopted separation-precipitation-absorption-chromatography integrated technique, and facility investment and working cost are lower.The mould material that adopts is polyvinylidene fluoride film, antipollution, resistance to oxidation, easy cleaning, long service life; Charcoal absorption power is strong, renewable recycling more than ten time; 732 strong acid type cationic resins and 101 acidulous anion exchange capacity of resin height can effectively be removed the various zwitterions in the water, and the regeneration of acid-alkali treatment energy is used in the saturated back of resins exchange; That this technological design compact construction, equipment take up an area of is little, automatic controlling level is high, can the minimizing personnel and reduce labor intensity.
4, the additional economic benefit of Chan Shenging is good.80% protein in the recyclable phosphopeptide caseinate factory effluent of the present invention, protein content reaches more than 35%, can be used as to produce the feedstuff protein raw material; The factory effluent cyclic utilization rate reaches more than 60%, has saved water resources, has alleviated enterprise's treatment pressure of sewage.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described again:
Embodiment 1:
The recycle method of waste water during a kind of phosphopeptide caseinate is produced, its step is divided into:
A. waste water protein precipitation during phosphopeptide caseinate is produced
The proportion 1.010kg/L of waste water during phosphopeptide caseinate is produced, solid content 1.156% (w/w), pH4.0-5.0.5000ml waste water is added in the stainless steel vessel that 10000ml adds a cover, feed pressurized air 30min with the 1.5L/min air flow under the normal temperature, leave standstill 30min then, allow the abundant coagulation sedimentation of protein gel, with the precipitation protein through 5000rmp centrifuging, the protein precipitation that reclaims is through 65 ℃, and 120mmHg vacuum-drying obtains reclaiming albumen 2.8g.
B. waste water hyperfiltration membrane filtration
To reclaim again that pH is 4.45 behind the protein, proportion 1.034kg/L, the waste water of volume 4825ml is through rolled film ultrafiltration (SPPM-18S-1 lab scale rolled film equipment, SanDa film Science Xiamen company limited) filters, the film molecular weight upper limit≤1000 (film numbering E2012C-28D) of damming, original pressure 10～12Bar, termination pressure 20～22Bar, circular flow 150～200ml/min, mean circulation time (MCT) 1.5～3h, 15 ℃ of water initial temperatures, 30 ℃ of loop termination temperature; Permeate water volume 〉=4250ml after ultrafiltration is finished, trap water volume≤600ml.
C. the filling of chromatography column
Granulated active carbon (40-60 order, the Ji Bei Yanshan Mountain, Chengde gac company limited) 15g that has activated is added in the deionized water 100ml water, stir in 1.5cm * 20cm (diameter * height) chromatography column of slowly packing into down.732 polystyryl cation resins (the Tianjin chemical industry all generations company limited) 28g that takes by weighing after the processing adds deionized water 50ml, stirs in 1.5cm * 30cm (diameter * height) chromatography column of slowly packing into down.No. 101 polyethylene resin anion(R.A)s after the processing (Tianjin chemical industry all generations company limited) 25g adds deionized water 50ml, stirs in 1.5cm * 30cm (diameter * height) chromatography column of slowly packing into down.
D. charcoal absorption and resinbed are analysed
Permeate water 4250ml water after the b step process added to depress successively by active carbon adsorption column, positively charged ion and anion column chromatography at 2-5Bar handle, going out water flow velocity is 1000ml/h, the processing water 〉=4000ml that finally obtains.
Trap water volume≤the 600ml of e, b step, proportion are 1.19kg/L, mainly contain larger molecular organics, can enter step a circular treatment again after accumulation.
Waste water was after ultrafiltration membrance filter and chromatography processing during phosphopeptide caseinate was produced, water quality detection meets small-sized centralized water supply and water dispersion type part water-quality guideline and the limit value among the State Standard of the People's Republic of China GB5749-2006 " drinking water sanitary standard ", can circulate for the production of.
Claims (1)
1. the recycle method of waste water during a phosphopeptide caseinate is produced, its step is divided into:
A. waste water protein precipitation during phosphopeptide caseinate is produced
Waste water in the phosphopeptide caseinate production is added in the stainless steel vessel of adding a cover, feed pressurized air 30min with the 1.5L/min air flow under the normal temperature, leave standstill 30min then, allow the abundant coagulation sedimentation of protein gel, with the precipitation protein through 5000rmp centrifuging, the protein precipitation that reclaims is through 65 ℃, and albumen is reclaimed in 120mmHg vacuum-drying;
B. waste water hyperfiltration membrane filtration
Reclaim waste water behind the protein through the rolled film ultra-filtration filters, the film molecular weight upper limit≤1000 of damming, original pressure 12Bar, termination pressure 20Bar, circular flow 150～200ml/min, mean circulation time (MCT) 1.5～2h, 15 ℃ of water initial temperatures, 30 ℃ of loop termination temperature; Permeate water volume 〉=4250ml after ultrafiltration is finished;
C. charcoal absorption and resinbed are analysed
Permeate water 4250ml water after the b step process added to depress successively by active carbon adsorption column, cation seperation column and anion column chromatography at 2-5Bar handle, going out water flow velocity is 1000ml/h, the processing water 〉=4000ml that finally obtains;
The trap water of d, b step enters step a and carries out circular treatment again.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694625A (en) * | 2002-08-27 | 2005-11-09 | 精选牛奶场公司 | Dairy compositions and method of making |
| CN101195652A (en) * | 2007-12-03 | 2008-06-11 | 内蒙古工业大学 | Method for recycling protein and lactose from milk product wastewater |
| CN101755996A (en) * | 2010-01-20 | 2010-06-30 | 甘南州科瑞乳品开发有限公司 | Casein phosphopept continuous production process by adopting immobilized enzyme hydrolysis crude cheese and ultrafiltration membrane separation method |
| CN101792242A (en) * | 2010-04-09 | 2010-08-04 | 安徽南风环境工程技术有限公司 | Treatment process of waste water of dairy products |
| CN101948524A (en) * | 2010-09-02 | 2011-01-19 | 天津大学 | Multi-phosphopeptide-enriched casein hydrolyzate and preparation method thereof |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1694625A (en) * | 2002-08-27 | 2005-11-09 | 精选牛奶场公司 | Dairy compositions and method of making |
| CN101195652A (en) * | 2007-12-03 | 2008-06-11 | 内蒙古工业大学 | Method for recycling protein and lactose from milk product wastewater |
| CN101755996A (en) * | 2010-01-20 | 2010-06-30 | 甘南州科瑞乳品开发有限公司 | Casein phosphopept continuous production process by adopting immobilized enzyme hydrolysis crude cheese and ultrafiltration membrane separation method |
| CN101792242A (en) * | 2010-04-09 | 2010-08-04 | 安徽南风环境工程技术有限公司 | Treatment process of waste water of dairy products |
| CN101948524A (en) * | 2010-09-02 | 2011-01-19 | 天津大学 | Multi-phosphopeptide-enriched casein hydrolyzate and preparation method thereof |
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