CN105984999A - Treatment technology for biodiesel wastewater - Google Patents
Treatment technology for biodiesel wastewater Download PDFInfo
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- CN105984999A CN105984999A CN201510095272.9A CN201510095272A CN105984999A CN 105984999 A CN105984999 A CN 105984999A CN 201510095272 A CN201510095272 A CN 201510095272A CN 105984999 A CN105984999 A CN 105984999A
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Abstract
The invention provides a treatment technology for biodiesel wastewater. The treatment technology comprises the steps that raw water enters a reaction tank (1), an agent 1 is added, stirring is carried out for a reaction, and a large mount of precipitate is generated; after the reaction is finished, the raw water enters a reaction tank (2), an agent 2 is added, stirring is further carried out for a reaction, and a large mount of precipitate is generated, wherein sulfate radicals are separated out in the precipitate form in the two times of reactions, and the content of sulfate radicals in the raw water is reduced to 0.5%.; wastewater passing through a pretreatment unit enters a regulating distribution well, an agent 3 is added to regulate the PH value to be normal, then the wastewater enters an anaerobic reactor, high-concentration organic matter in the wastewater is degraded through the mass transfer action with an anaerobic strain in the reactor, and meanwhile energy marsh gas capable of being utilized is generated; outlet water of the anaerobic reactor enters an aerobic tank treatment unit, blast aeration is carried out at the bottom of the tank to provide sufficient dissolved oxygen, the organic matter in the wastewater is further reduced through the action of aerobic microorganisms in the tank, and the COD concentration of outlet water reaches 150 mg/l or below; if the local emission standard is higher, the wastewater then enters a deep treatment unit, an agent 4 is added for deep treatment, and the organic matter in the wastewater is further reduced to ensure that outlet water meets the standard. The technology solves the problem that in a traditional biological treatment unit, microorganisms are poisoned, and consequently a treatment system collapses.
Description
Technical field
The technology of the present invention relates to the processing technology field of high concentrated organic wastewater, particularly the waste water process of biodiesel industry, particularly relates to a kind of process technique.
Background technology
Biodiesel is the bioenergy being prepared from for raw material with animal and plant fat, waste grease and microbial grease etc., is acknowledged as the excellent substitute of petrifaction diesel.Biodiesel industry is emerging in recent years a industry, with putting more effort of country's regulation waste oil backflow dining table, the increasing biodiesel enterprise development with waste cooking oil as raw material is got up, the waste water that thing followed the sector produces in producing urgently is processed, need a set of reliable technology, after being processed by each technique unit, water outlet reaches the local discharge standard requiring of project.
Existing conventional sewage treatment process, the not property settings processing unit for biodiesel wastewater, it is impossible to remove the toxicity in biodiesel wastewater, cause carrying out a biological disposal upon, easily cause the collapse of traditional wastewater processing system, more can say without standard water discharge.
Content of the invention
The present invention proposes new process technique, in order to solve the problem that existing traditional wastewater processing system is easily collapsed, solves the problem that microorganism is easily poisoned to death.
The processing technology routine of the present invention is achieved in that
A kind of process technique of biodiesel wastewater, comprising:
Former water initially enters regulating reservoir, sulphur removal pretreatment unit is entered after the regulating water quality water yield, water outlet after pretreatment enters distribution well, in distribution well, sewage lifting enters anaerobic reactor, water outlet after anaerobic reactor is processed enters aerobic treatment unit, in Aerobic Pond, blast aeration entrance second pond carries out gravitational settling, and secondary clarifier effluent enters advanced treatment unit, finally realizes the qualified discharge of sewage.
Biodiesel wastewater is in addition to the organic matter containing high concentration, and possibly together with substantial amounts of sulfate radical, at concentrations up to 2-3%, the sulfate radical of such high concentration directly uses biological treatment that microorganism can be caused to be poisoned, microorganism mortality system crash.Therefore sulfate radical must be removed before entering biological treatment system.Key point of the present invention is sulphur removal pretreatment unit, and containing 2 reaction tanks, former water enters reaction tank 1, adds medicament 1, and stirring reaction produces precipitation in a large number, and after reaction terminates, former water enters reaction tank 2, adds medicament 2 and stirs a large amount of sediment of reaction generation further.Reacting thiourea acid group separates out with sedimentary form twice, and sulfate radical content in former water is down to 0.5 ‰.Sewage through pretreatment unit enters regulation distribution well, add medicament 3 and regulate pH value to after normal, sewage enters anaerobic reactor, this anaerobic reactor is the utility model patent technology of my company, high-enriched organics in sewage, by being degraded with the effect of mass transmitting of anaerobic species in reactor, produces the energy biogas that can utilize simultaneously.Anaerobic reactor water outlet enters Aerobic Pond processing unit, and blast aeration at the bottom of pond provides sufficient dissolved oxygen, by the effect of aerobic microbiological in pond, reduces the organic matter in sewage further, and effluent COD concentration reaches below 150mg/l.If local discharge standard has more strict requirements, sewage enters back into advanced treatment unit, carries out advanced treating by adding medicament 4, continues to reduce the organic matter in sewage, it is ensured that standard water discharge.
Wherein, it is preferred that dosing pretreatment unit is 2 reaction tanks, aerobic treatment unit is 2 reaction tanks.
Wherein it is preferred to, anaerobic reactor is the utility model technical patent product of my company.The biogas that anaerobic reactor produces can be with Collection utilization.
Wherein it is preferred to, sewage is lifted into each processing unit by pump.
Wherein it is preferred to, sewage running piping uses carbon steel piping, does preservative treatment.Water pump is connected with pipeline by valve, flange and other necessaries.
The process technique of a kind of biodiesel wastewater, sewage, by regulating reservoir, sulphur removal pretreatment unit, distribution well, anaerobic reactor, aerobic treatment unit and advanced treatment unit, finally realizes the purpose of qualified discharge.Meanwhile, overcome the poisoning of traditional biological processing unit microorganism, cause the problem that processing system is collapsed.
Brief description
For clearer explanation invention case study on implementation or technical scheme of the prior art, the accompanying drawing of required use in case study on implementation or description of the prior art will be briefly described below, obviously, accompanying drawing in describing below is only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 schematically shows the flow chart of the process technique of a kind of biodiesel wastewater of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, clear, complete description is carried out to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only a part of embodiment in the present invention, is not all, of embodiment.Based on the embodiment in the present invention, every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, broadly fall into the scope that the present invention comprises.
As it is shown in figure 1, embodiments provide the process technique of a kind of biodiesel wastewater, comprising:
Regulating reservoir；
Sulphur removal pretreatment unit；
Anaerobic reactor；
Aerobic treatment unit；
Advanced treatment unit；
After biodiesel wastewater is mixed by regulating reservoir regulation, enter sulphur removal pretreatment unit, after two-stage dosing reaction tank, after water outlet sulfate radical content is down to less than 0.5 ‰, enter anaerobic reation pool, by the anaerobic species effect in pond, reduce majority of organic pollutants, produce biogas.Anaerobic reactor water outlet enters aerobic treatment unit, and blast aeration at the bottom of pond provides sufficient dissolved oxygen, by the effect of aerobic microbiological in pond, reduces the organic matter in sewage further, and effluent COD concentration reaches below 150mg/l.If local discharge standard has more strict requirements, sewage enters back into advanced treatment unit, carries out advanced treating by adding medicament 4, continues to reduce the organic matter in sewage, it is ensured that standard water discharge.
Below as a example by the sulphur removal pretreatment unit in this technique, offer embodiments of the invention:
During work, sulfur acid waste water first reaction tank 1, in reaction tank 1, mechanical agitation is set, add medicament 1 in reaction tank 1 simultaneously, sewage and medicament 1 react under mechanical agitation, control reaction time 20-30min, and reaction generates a large amount of sediment, sediment enters reaction tank 2 by the Valved discharge being arranged at the bottom of reaction tank 1 pond to sludge-tank, water outlet.In reaction tank 2, mechanical agitation is set, adding medicament 2, sewage and medicament 2 snap action under mechanical agitation in reaction tank 2, the control reaction time is at 15-20min simultaneously, generating a large amount of sediment, sediment is by being arranged on Valved discharge at the bottom of reaction tank 2 pond to sludge-tank.By two reaction tanks, complete sulphur removal.In water outlet, sulfate radical content is reduced to less than 0.5 ‰.
Above reaction tank needs to be equipped with 2, and each reaction tank respectively adds a kind of medicament, and the process adding medicament 1 is bulk processing, and sediment is many, and the process adding medicament 2 is precision processing, and sediment is few；Mechanical stirring device in reaction tank can use other devices to substitute, as long as ensureing reaction effect.Reaction tank body material can be carbon steel anticorrosion structure or Reinforced Concrete Structure.
Wherein it is preferred to, the quantity of above-mentioned reaction tank is 2.
Wherein it is preferred to, add different medicaments in each pond body.
Wherein it is preferred to, plumbing drain uses carbon steel pipe, and dosing pipe uses PP pipe.
Wherein it is preferred to, need supporting two set chemicals dosing plants, often set comprises molten explosive barrel, dosing pump and agitating device.Chemicals dosing plant all uses anticorrosive material.
The invention provides a kind of technique, in order to processing biodiesel wastewater, including regulating reservoir, sulphur removal pretreatment unit, distribution well, anaerobic reactor, aerobic treatment unit and advanced treatment unit.
Production of biodiesel waste water, after sulphur removal pretreatment, enters distribution well, after adding the PH that medicament 3 regulates sewage, enter anaerobic reation pool, sewage carries out rapid mass transfer with the anaerobic species in anaerobic reation pool, and in sewage, majority of organic pollutants is consumed by anaerobic species, produces biogas.Anaerobic reactor water outlet enters aerobic treatment unit, and blast aeration at the bottom of pond provides sufficient dissolved oxygen, by the effect of aerobic microbiological in pond, reduces the organic matter in sewage further, and effluent COD concentration reaches below 150mg/l.If local discharge standard has more strict requirements, sewage enters back into advanced treatment unit, carries out advanced treating by adding medicament 4, continues to reduce the organic matter in sewage, it is ensured that standard water discharge.
Wherein it is preferred to, the process technique of above-mentioned unit composition, it is within the scope of the present invention.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. done, should be included within the scope of the present invention.
Claims (5)
1. the process technique of a biodiesel wastewater, it is characterised in that include:
Regulating reservoir；
Sulphur removal pretreatment unit；
Distribution well；
Anaerobic reactor；
Aerobic treatment unit；
Advanced treatment unit；
2. the process technique of a kind of biodiesel wastewater as claimed in claim 1, its feature
Being, dosing pretreatment unit is 2 reaction tanks, and aerobic treatment unit is 2 reaction tanks.
3. the process technique of a kind of biodiesel wastewater as claimed in claim 1, its feature
Being, anaerobic reactor is the utility model technical patent product of my company.Anaerobic reactor produces
Raw biogas can be with Collection utilization.
4. the process technique of a kind of biodiesel wastewater as claimed in claim 1, its feature
Being, sewage is lifted into each processing unit by pump.
5. the process technique of a kind of biodiesel wastewater as claimed in claim 1, its feature
Being, sewage running piping uses carbon steel piping, does preservative treatment.Water pump passes through valve, method
Blue and other necessaries are connected with pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095272.9A CN105984999A (en) | 2015-03-04 | 2015-03-04 | Treatment technology for biodiesel wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510095272.9A CN105984999A (en) | 2015-03-04 | 2015-03-04 | Treatment technology for biodiesel wastewater |
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| CN105984999A true CN105984999A (en) | 2016-10-05 |
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| CN201510095272.9A Pending CN105984999A (en) | 2015-03-04 | 2015-03-04 | Treatment technology for biodiesel wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108373234A (en) * | 2018-01-30 | 2018-08-07 | 浙江工业大学 | A kind of processing method of biodiesel sulfur acid waste water |
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| CN101734792A (en) * | 2008-11-27 | 2010-06-16 | 陈光浩 | System and method for treating waste water and sewage containing sulfate radicals |
| CN101838083A (en) * | 2010-05-17 | 2010-09-22 | 浙江大学 | Method for treating organic chemical wastewater having high COD and high concentration of sulfate ions |
| CN103570181A (en) * | 2012-07-23 | 2014-02-12 | 陕西德融新能源股份有限公司 | Treatment technology of oily sewage of biodiesel factories |
| CN102826716A (en) * | 2012-09-13 | 2012-12-19 | 艾特克控股集团有限公司 | Treatment method for waste water in production of streptomycin sulfate |
| CN103232140A (en) * | 2013-04-25 | 2013-08-07 | 泉州师范学院 | Multi-stage treatment process for biodiesel wastewater |
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| CN108373234A (en) * | 2018-01-30 | 2018-08-07 | 浙江工业大学 | A kind of processing method of biodiesel sulfur acid waste water |
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Application publication date: 20161005 |