CN105347606A - Treatment process for methanol protein wastewater - Google Patents
Treatment process for methanol protein wastewater Download PDFInfo
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- CN105347606A CN105347606A CN201510638638.2A CN201510638638A CN105347606A CN 105347606 A CN105347606 A CN 105347606A CN 201510638638 A CN201510638638 A CN 201510638638A CN 105347606 A CN105347606 A CN 105347606A
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Abstract
The invention discloses a treatment process for methanol protein wastewater. The process comprises the following steps: (1) discharging the methanol protein wastewater into a conditioning tank; (2) carrying out aeration so as to subject the methanol protein wastewater to uniform mixing; (3) carrying out treatment by adopting ultrafiltration equipment; (4) carrying out desalting treatment by adopting electrodialysis equipment; (5) carrying out treatment by adopting nanofiltration equipment; (6) carrying out biochemical treatment; (7) conveying filtrate subjected to the biochemical treatment into ultrafiltration equipment, so as to remove organic decomposed substances and granular impurities intermixed during the biochemical treatment; and (8) carrying out disinfecting treatment on the filtrate. In conclusion, the treatment process has the advantages that the route is short, the treatment efficiency is high, the system energy consumption is low, the equipment operating cost is low, the operation is simple, the labor intensity is low, the production cost can be reduced effectively, the economic benefit of an enterprise can be effectively increased, resource-converting recycling is achieved, and the like.
Description
Technical field
Patent of the present invention belongs to technical field of waste water processing, particularly
a kind of Methanol Protein waste water treatment process.
Background technology
At present, Methanol Protein is a kind of single cell protein (SCP), refer to the total protein extracted from the non-pathogenic microorganisms cell of pure culture, compared with traditional protein, Methanol Protein has safety non-toxic, is of high nutritive value, abundant raw material, be easy to production control, pollute the advantages such as little; Methanol Protein has used more than 20 year abroad, is widely used as the feed of domestic animal, poultry and fish, proves that it is a kind of safe animal feedstuff additive; Exploitation methanol albumen to the superfluous production capacity of digestion methyl alcohol, alleviate the feedstuff proteins such as fish meal deficiency, promote the development of domestic livestock industry and reduce environmental pollution etc. that there is profound significance.
Mostly industrial methanol albumen is to take methyl alcohol as carbon source matrix, the unicellular microorganism such as bacterium or yeast strain fermentation is utilized to produce, mainly contain ICI method, Hoechst-Uhde method, Norprotein method, MGC method, IFP method, PhillipsPetroleum method etc., Methanol Protein is discharged without waste residue, waste gas in process of production, but there is a large amount of waste water to produce, main from fermentation waste water, and produce clean waste water, sanitary wastewater; Principal pollutant in waste water are the organism (based on protein and oligose) of high density, a small amount of organic acid and inorganic salt (Na, K, Mg, Ca, P, S etc.), COD, BOD value is higher, and total nitrogen and ammonia-nitrogen content are also higher, belong to high concentrated organic wastewater; Dissolved oxygens a large amount of in water can be consumed after this kind of waste water enters water body, cause water hypoxia, make fish and hydrobiont death, easily cause ecological phenomenons such as " red tides ", and draining has Unpredictability, randomness, quantity discharged is comparatively large, large to the impact of sewage works, so the process of Methanol Protein waste water is an imperative and difficult task.
Organic content in Methanol Protein waste water is high, BOD/COD value is 0.3 ~ 0.5, biodegradability is good, therefore takes biological method to process more, and auxiliary treatment process has: isoelectric point precipitation, coagulant sedimentation, By Bubble-floating Method, membrane processing method, chemical treatment etc.; But these methods are applicable to the process of specific waste water mostly, also there is no a kind of particular procedure technique for Methanol Protein waste water at present, if carry out the process of Methanol Protein waste water by general method, easily cause plant efficiency low, easily break down, process situation not up to standard;
I develops a kind of Methanol Protein waste water treatment process with actual effect according to many years of experience, multiple film treatment technology is combined with biochemical processing, most of organism directly can be reclaimed by Using Multistage Membranes treatment technology, inorganic salt in recycling electrodialytic technique removing waste water, then remaining organism in biochemical processing Decomposition Wastewater is used, membrane filtration again, sterilization, water body can reach emission standard, compared with additive method, it is short that the present invention has route, processing efficiency is high, system energy consumption is low, equipment working cost is low, simple to operate, labour intensity is little, effectively can reduce the economic benefit that production cost improves enterprise, realize the advantages such as resource utilization recycling.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and provide that a kind of route is short, processing efficiency is high, system energy consumption is low, equipment working cost is low, simple to operate, labour intensity is little, can effectively reduce production cost improve enterprise economic benefit, realize the Methanol Protein waste water treatment process that resource utilization recycles.
The present invention is achieved by the following technical solutions:
a kind of Methanol Protein waste water treatment process, it is characterized in that, it comprises the following steps:
(1) arrange into equalizing tank by Methanol Protein waste water, large granular impurity preliminary sedimentation in waste water, supernatant liquid is arranged into another equalizing tank, adopts aerating apparatus that Methanol Protein waste water is mixed;
(2) the Methanol Protein waste water in step (1) is transported in ultrafiltration apparatus, through membrane filtration, waste water is divided into concentrated solution, filtrate, concentrated solution pump around circuit, the high molecular weight protein (molecular weight is more than 5000) wherein contained is recovered, and filtrate waits for that next step processes;
(3) be transported in electrodialysis appts by the waste water filtrate in step (2), carry out desalting treatment, filtrate is divided into two portions: strong brine, desalination albumen water, strong brine pump around circuit, and desalination albumen water waits for that next step processes;
(4) the desalination albumen water in step (3) is transported in nanofiltration equipment, carry out retaining of desalting treatment and small organic molecule, after nanofiltration, desalination albumen moisture is concentrated solution, filtrate, concentrated solution pump around circuit, filtrate waits for that next step processes;
(5) filtrate in step (4) is carried out biochemical treatment, first be transported to anaerobic biological treatment equipment to process, be transported in Aerobic biological process equipment by the product of previous step process and concentrate further, filtrate waits for that next step processes;
(6) be transported in ultrafiltration apparatus by the filtrate after biochemical treatment, the organic decomposition thing be mixed in removing biochemical treatment and granule foreign, filtrate waits for that next step processes;
(7) by filtrate disinfection.
Described aerating apparatus is made up of blower fan, aerating pipelines.
Concentrated solution in described nanofiltration equipment is transported outward by vapor-compression after repeatedly pump around circuit.
The mud retained in described step (6) is become mud cake with organic decomposition thing by press filtration, then transports outward.
The cycle index of described concentrated solution is between 5 times to 7 times.
Throw out in described step (1), after flase floor filters, is transported outward.
Of the present invention
a kind of Methanol Protein waste water treatment process, there is following beneficial effect:
(1) the present invention is by process Methanol Protein waste water, and the macro-molecular protein in waste water directly can be reclaimed, reduce processing cost, the waste water of emission compliance does not work the mischief to environment simultaneously.
(2) the present invention proposes Using Multistage Membranes treatment technology, retained by film, most macromolecular substance directly can be retained recycling, this part without chemical reaction, have simple to operate, processing efficiency is high, equipment working cost is low, effectively can improve the advantage of Business Economic Benefit.
(3) the present invention is by the waste water through Using Multistage Membranes process, be transported in biochemical processing device, with the organism in microbiological oxidation Decomposition Wastewater, effectively can reduce the small organic molecule content in waste water, there is the advantage of organic content in reasonable in design, effective reduction waste water.
(4) waste water of biochemical equipment process is transported in ultrafiltration apparatus by the present invention again, isolate the residue of microbiological oxidation decomposing organic matter, and the mud etc. be mixed in biochemical treatment, can be further purified water body, again after sterilization, directly can discharge or second stage employ, have that flow process is perfect, the advantage of environmental protection and saving.
Embodiment
Below in conjunction with embodiment, the present invention is described further, and embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Embodiment 1
Step is as follows:
1, Methanol Protein waste water is arranged into equalizing tank, large granular impurity preliminary sedimentation in waste water; Supernatant liquid is discharged in another equalizing tank, adopts aerating apparatus that Methanol Protein waste water is mixed, throw out before through flase floor circulating filtration 3 times, filter residue compression outward transport, filtrate is arranged into aeration tank; Methanol Protein waste water in step (1) is transported in ultrafiltration apparatus, through membrane filtration, waste water is divided into concentrated solution, filtrate, concentrated solution carries out pump around circuit, the high molecular weight protein (molecular weight is more than 5000) wherein contained is recovered, filtrate is transported in electrodialysis appts, carries out desalting treatment; After electrodialytic desalting process, filtrate is divided into two portions: strong brine, desalination albumen water, and the continuous pump around circuit of strong brine, then evaporates outward transport, and desalination albumen water is transported in nanofiltration equipment, carries out retaining of desalting treatment and small organic molecule; After nanofiltration, desalination albumen moisture is concentrated solution, filtrate, and the continuous pump around circuit of concentrated solution, compresses outward transport after 3 times, and filtrate carries out biochemical treatment; First be transported to anaerobic biological treatment equipment to process, then the product of previous step process is transported in Aerobic biological process equipment concentrates further; Filtrate is transported in ultrafiltration apparatus, the organic decomposition thing be mixed in removing biochemical treatment and granule foreign, and impurity is compressed into cake outward transport, filtrate disinfection, and the water of now discharging can be directly used in the items such as carwash;
Embodiment 2
Step is as follows:
1, arrange into equalizing tank by Methanol Protein waste water, after flase floor filters 4 times, adopt aerating apparatus that Methanol Protein waste water is mixed, the filter residue that flase floor filters out after compression, is transported outward; Methanol Protein waste water in step (1) is transported in ultrafiltration apparatus, through membrane filtration, waste water is divided into concentrated solution, filtrate, concentrated solution pump around circuit, the high molecular weight protein (molecular weight is more than 5000) wherein contained is recovered, filtrate is transported in electrodialysis appts, carries out desalting treatment; After electrodialytic desalting process, filtrate is divided into two portions: strong brine, desalination albumen water, and the continuous pump around circuit of strong brine, then evaporates outward transport, and desalination albumen water is transported in nanofiltration equipment, carries out retaining of desalting treatment and small organic molecule; After nanofiltration, desalination albumen moisture is concentrated solution, filtrate, the continuous pump around circuit of concentrated solution, outward transport is compressed after 4 times, filtrate carries out biochemical treatment, is first transported to anaerobic biological treatment equipment and processes, then is transported in Aerobic biological process equipment by the product of previous step process and concentrates further; Filtrate is transported in ultrafiltration apparatus, the organic decomposition thing be mixed in removing biochemical treatment and granule foreign, and impurity is compressed into cake outward transport, and filtrate disinfection, the water of now discharging can be directly used in the items such as carwash.
Claims (6)
1. a Methanol Protein waste water treatment process, is characterized in that, it comprises the following steps:
(1) arrange into equalizing tank by Methanol Protein waste water, large granular impurity preliminary sedimentation in waste water, supernatant liquid is arranged into another equalizing tank, adopts aerating apparatus that Methanol Protein waste water is mixed;
(2) the Methanol Protein waste water in step (1) is transported in ultrafiltration apparatus, through membrane filtration, waste water is divided into concentrated solution, filtrate, concentrated solution pump around circuit, the high molecular weight protein (molecular weight is more than 5000) wherein contained is recovered, and filtrate waits for that next step processes;
(3) be transported in electrodialysis appts by the waste water filtrate in step (2), carry out desalting treatment, filtrate is divided into two portions: strong brine, desalination albumen water, strong brine pump around circuit, and desalination albumen water waits for that next step processes;
(4) be transported in nanofiltration equipment by the desalination albumen water in step (3), carry out retaining of desalting treatment and small organic molecule, desalination albumen moisture is concentrated solution, filtrate, concentrated solution pump around circuit, and filtrate waits for that next step processes;
(5) filtrate in step (4) is carried out biochemical treatment, first be transported to anaerobic biological treatment equipment to process, be transported in Aerobic biological process equipment by the product of previous step process and concentrate further, filtrate waits for that next step processes;
(6) be transported in ultrafiltration apparatus by the filtrate after biochemical treatment, the organic decomposition thing be mixed in removing biochemical treatment and granule foreign, filtrate waits for that next step processes;
(7) by filtrate disinfection.
2. a kind of Methanol Protein waste water treatment process according to claim 1, is characterized in that: described aerating apparatus is made up of blower fan, aerating pipelines.
3. a kind of Methanol Protein waste water treatment process according to claim 1, is characterized in that: the concentrated solution in described nanofiltration equipment is repeatedly transported outward by vapor-compression after pump around circuit.
4. a kind of Methanol Protein waste water treatment process according to claim 1, is characterized in that: the mud retained in described step (6) is become mud cake with organic decomposition thing by press filtration, then transports outward.
5. a kind of Methanol Protein waste water treatment process according to claim 1, is characterized in that: the cycle index of described concentrated solution is between 5 times to 7 times.
6. a kind of Methanol Protein waste water treatment process according to claim 1, is characterized in that: the throw out in described step (1), after flase floor filters, is transported outward.
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| CN201510638638.2A CN105347606B (en) | 2015-09-23 | 2015-09-23 | A kind of Methanol Protein waste water treatment process |
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| CN201510638638.2A CN105347606B (en) | 2015-09-23 | 2015-09-23 | A kind of Methanol Protein waste water treatment process |
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| CN105347606B CN105347606B (en) | 2018-06-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277399A (en) * | 2016-08-30 | 2017-01-04 | 义马煤业集团煤生化高科技工程有限公司 | A kind of processing method of Methanol Protein comprehensive wastewater |
| CN109081478A (en) * | 2018-09-15 | 2018-12-25 | 南京霄祥工程技术有限公司 | A kind for the treatment of process of fermentation waste water |
| CN112624484A (en) * | 2020-11-27 | 2021-04-09 | 苏州聚微环保科技有限公司 | Novel heparin sodium wastewater treatment process for efficiently recovering protein |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277399A (en) * | 2016-08-30 | 2017-01-04 | 义马煤业集团煤生化高科技工程有限公司 | A kind of processing method of Methanol Protein comprehensive wastewater |
| CN106277399B (en) * | 2016-08-30 | 2019-06-28 | 义马煤业集团煤生化高科技工程有限公司 | A kind of recoverying and utilizing method of Methanol Protein comprehensive wastewater |
| CN109081478A (en) * | 2018-09-15 | 2018-12-25 | 南京霄祥工程技术有限公司 | A kind for the treatment of process of fermentation waste water |
| CN109081478B (en) * | 2018-09-15 | 2021-12-07 | 德州迈科生物技术有限公司 | Treatment process of fermentation wastewater |
| CN112624484A (en) * | 2020-11-27 | 2021-04-09 | 苏州聚微环保科技有限公司 | Novel heparin sodium wastewater treatment process for efficiently recovering protein |
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| CN105347606B (en) | 2018-06-19 |
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