CN105621632B - A kind of biofermentation heavy metal precipitation clarifier-tank - Google Patents

A kind of biofermentation heavy metal precipitation clarifier-tank Download PDF

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Publication number
CN105621632B
CN105621632B CN201610152034.1A CN201610152034A CN105621632B CN 105621632 B CN105621632 B CN 105621632B CN 201610152034 A CN201610152034 A CN 201610152034A CN 105621632 B CN105621632 B CN 105621632B
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heavy metal
biofermentation
filter screen
biological filter
micropore
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CN105621632A (en
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李程伟
张作玮
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Wuhu Kebang New Energy Technology Co., Ltd.
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张作玮
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • C02F3/348Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/34Biological treatment of water, waste water, or sewage characterised by the microorganisms used
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds

Abstract

The invention discloses a kind of biofermentation heavy metal precipitation clarifier-tank.The biofermentation characteristic that make use of dish Xanthomonas campestris of the invention, in the presence of D glucose, lactonization reaction, the final output L ascorbic acid that ferments occur inside dish Xanthomonas campestris(Vitamin C), recycle L ascorbic acid to be combined with heavy metal ion, and the characteristic for being insoluble in water and nontoxic salt is generated, the heavy metal ion in heavy metal wastewater thereby can be removed by precipitation process.Meanwhile the L ascorbic acid of biofermentation reaction institute output is participated in using D glucose, its cost can substantially reduce the Material Cost of wastewater treatment well below L ascorbic acid is directly added into waste water.

Description

A kind of biofermentation-heavy metal precipitation clarifier-tank
Technical field
The present invention relates to a kind of biofermentation-heavy metal precipitation clarifier-tank, the field of waste water treatment belonged in environmental protection.
Background technology
With the development of society, a large amount of undressed heavy metal wastewater therebies are directly discharged into natural water body, cause huge Harm.The processing method both at home and abroad on the heavy metal wastewater thereby containing heavy metal can be divided into three major types at present:At physical treatment process, chemistry Logos, biological treatment.
1st, conventional physical treatment logos includes absorption method, ion-exchange, membrane separation process etc..
(1)Absorption method is that a kind of method of heavy metal ions in wastewater is removed using a variety of porous adsorbing materials.Activated carbon It is traditional sorbing material, has stronger adsorption capacity, clearance is high, but regeneration efficiency is low.Some natural materials, such as natural boiling Stone, price is low, source is wide, and it is the mineral material for being used for Heavy Metal Pollution Control earliest.
(2)Ion-exchange is to swap to reach with the ion on ion-exchanger using water intermediate ion to have in water removal The purpose of evil ion.Ion exchange resin is being commonly used to handle with this method processing heavy metal-containing waste water both at home and abroad at present.
(3)UF membrane is to utilize a kind of pellicle, under external influence, does not change the chemical form of solution and reaches separation Purpose.It is an efficient separation process, and separation process energy consumption is low, and operating temperature is room temperature, is easy to safeguard, equipment can High by property, treating capacity and equipment scale change within a large range, and floor space is small, will not produce secondary pollution, but film It is expensive, vulnerable to pollution.
2nd, conventional method of chemical treatment includes chemical precipitation method and electrolysis.
Method of chemical treatment has chemical precipitation method and electrolysis in heavy metal-containing wastewater treatment.
(1)Chemical precipitation method is to add some chemical substances into waste water to make the pollutant in itself and waste water occur directly Chemical reaction, the method that generation is insoluble in the sediment of water and removes separated from contaminants.But handled with the method and simply shifted Polluter in waste water, and it is likely to cause secondary pollution.
(2)Electrolysis, which converts electrical energy into chemical energy, makes electrode in electrolytic cell nearby produce redox reaction, so that The process that waste water is purified.I.e. waste water carries out cell reaction, and the noxious material in waste water carries out oxygen respectively in anode and negative electrode Change reduction reaction result and produce novel substance.For electrolysis compared with chemical precipitation method, the cycle is short, and operating cost is low, less energy consumption, is beneficial to Heavy metal all rescue measures proved ineffectual advantage is reclaimed, but the consumption of anode material iron is big, floor space is big.
3rd, biological treatment is to handle waste water using the metabolism of biology.Biological treatment can be in processing weight The inorganic matter that and can is gone in water removal while metal.After microorganism is fixed, its stability increase, to the ability to bear and drop of poisonous substance Solution ability all increased.Removal available for heavy metal ion in various organic wastewaters.Microorganism treatment has microorganism The advantages that density is high, product separation is easy.It is but extensive to utilize because cell technique for fixing is still in the experimental study stage at present The situation of microbiological treatment heavy metal wastewater thereby is also seldom, to realize that industrialization also needs to further study.
At present, existing process for treating heavy-metal waste water containing heavy metal exist cost height, technical sophistication, floor space it is big, The deficiencies such as high energy consumption and recycling rate of waterused are low.Therefore, it is necessary to break away from existing treatment technology thinking, processing heavy metal is hewed out The new way of organic phosphate in waste water, and then develop a kind of heavy metal wastewater thereby organic phosphate treatment technology of new type.
The content of the invention
To solve the deficiencies in the prior art, the invention provides a kind of biofermentation-precipitation reaction clarifier-tank, pond Body uses hard glass steel material, and pond body dischargeable capacity is 150m3, its pond body is divided into upper and lower two units, lower unit be except Heavy metal clean unit, its left lower are equipped with inlet valve and electric expansion mud pusher, and right upper portion is equipped with flowing water Valve, right For side lower part equipped with sludge row's mouth, middle part is reserved with the micropore biological filter screen of space decline so far;Upper unit is sent out for biology Ferment storehouse, dischargeable capacity 125m3, its top is respectively fixed with 6 tool short distance expansion links and 6 tools are long away from expansion link, and often the short distance of having is stretched Contracting bar end is mounted on 1 powder shower nozzle, and often tool is long is mounted on 1 set of micropore biological filter screen, biology hair away from expansion link end Ferment storehouse both sides are respectively provided with a set of thermostat, and its bottom in being provided with 6 electricity altogether in micropore biological filter screen relative position Dynamic door, the operating voltage of electric cabin door is 380V, and the operating voltage of powder shower nozzle is 15V.
Further, the aperture of the micropore biological filter screen of biofermentation-heavy metal precipitation clarifier-tank is 25 μm, automatic temperature-controlled dress The operating voltage put is 230V, and temperature controlling range is 20 ~ 40 DEG C, and temperature-controlled precision is 1.0 DEG C.
The operation principle of biofermentation-precipitation reaction clarifier-tank of the present invention is as follows:
After pH value regulation processing(PH value is 5.5 ~ 6.5 after processing)Electroplating wastewater it is anti-by biofermentation-precipitation The inlet valve of cleaning system left bottom is answered to enter inside cleaning system, 3 sets have been completed biological fermentation process and have been attached with The micropore biological filter screen of enough L-AAs is under the long driving away from expansion link, under the electric cabin door through biofermentation orlop portion It is down to below the water surface, occurs fully to contact with electroplating wastewater, the L-AA adhered on micropore biological filter screen can be with waste water In lead ion chemically react, with reference to generation be insoluble in water and nontoxic salt, be progressively deposited in pond body bottom formed contain Lead sludge, this sludge promote through electric expansion mud pusher, discharge the system by sludge row's mouth of pond body bottom right side and carry out nothing Evilization processing, meanwhile, the waste water after except lead treatment and purification, the system is discharged by the flowing water Valve of pond body right upper portion, entered Enter next treatment process;When the L-AA step-reaction adhered on micropore biological filter screen runs out of, micropore biological filter screen The water surface can be lifted out under the long driving away from expansion link, biofermentation storehouse is recycled to through electric cabin door, and other 3 sets have been completed to give birth to Thing fermentation process has simultaneously been attached with the micropore biological filter screens of enough L-AAs under the long driving away from expansion link, is sent out through biology The electric cabin door in ferment orlop portion is dropped to below the water surface, and continuation reacts with electroplating wastewater, and performance removes lead catharsis, together When, 3 sets of micropore biological filter screens being recycled in previous step in biofermentation storehouse pass through 3 driven by short distance expansion link The up and down motion of powder shower nozzle, to the mixed-powder for uniformly spraying dish Xanthomonas campestris bacterial strain and D-Glucose thereon, and in biology 90min is stopped in fermentation cabin to complete biological fermentation process, in this time, the thermostat of biofermentation storehouse both sides will Temperature is adjusted to the temperature range of suitable dish Xanthomonas campestris growth in storehouse(25~35℃), in the presence of D-Glucose, dish is yellow single Lactonization reaction occurs inside born of the same parents bacterium, final fermentation output L-AA is simultaneously attached on micropore biological filter screen, gives birth to micropore Thing filter screen is regenerated except lead purification function, and micropore biological filter screen is dropped to below the water surface through the long driving away from expansion link again, Micropore biological filter screen before replacing it, continuation react with electroplating wastewater, and performance removes lead catharsis, this biofermentation-heavy The reaction purification process that forms sediment moves in circles progress.
The advantage of the invention is that:
(1)The present invention has broken away from existing heavy metal-containing waste water purified treatment principle, and creative make use of dish Huang unit cell It is ascorbic characteristic that bacterium can produce L-AA by biological fermentation process, while also uses L-AA energy It is enough to be combined with heavy metal ion, and the reaction for being insoluble in water and nontoxic salt is generated, the reaction is 5.5 ~ 6.5 easily in pH Carried out under weak acid environment, and very strong to the selectivity of heavy metal ions in wastewater, be unusual targetedly processing method.
(2)The salt reacted by L-AA and heavy metal ion to generate is a kind of nontoxic material, and this is The L-AA of dish Xanthomonas campestris used in system and D-Glucose and biological fermentation process institute output is to human body and ring Border is harmless.Therefore, this method is a kind of non-harmful purifying treatment method.
(3)The system creativeness make use of a kind of micropore biological filter screen that can adhere to L-AA, as its table Face haptoreaction medium, enables the heavy metal ion in waste water to be fully in contact with it, improves reaction efficiency, improve The disposal ability of whole system, the heavy metal wastewater thereby after being handled by the system, its removal of heavy metal ions efficiency are reachable 99.2%。
(4)The system principle is simple and easy, and design and construction cost is relatively low, and treatment effect is preferable, operation expense It is very low, be advantageous to a wide range of popularization and application.
Brief description of the drawings
Fig. 1 is the schematic diagram of biofermentation-heavy metal precipitation clarifier-tank.
51- inlet valves, 52- biofermentations storehouse, 53- short distances expansion link, 54- length are filtered away from expansion link, 55- micropore biologicals Net, 56- powder shower nozzle, 57- electric cabin doors, 58- thermostats, 59- flowing water Valves, 510- sludge row mouth, 511- are electronic Flexible mud pusher.
Embodiment
Biofermentation as shown in Figure 1-precipitation reaction clarifier-tank, pond body use hard glass steel material, biofermentation storehouse Dischargeable capacity be 125m3, its pond body is divided into upper and lower two units, and lower unit is removing heavy metals clean unit, its left side Bottom is equipped with inlet valve 51 and electric expansion mud pusher 511, and right upper portion is equipped with flowing water Valve 59, and lower right side is equipped with sludge Mouth 510 is arranged, middle part is reserved with the micropore biological filter screen 55 of space decline so far;Upper unit is biological fermentation cabin 52, is had Effect volume is 150m3, it is long away from expansion link 54 that its top is respectively fixed with 6 tool short distance expansion links 53 and 6 tool, often has a short distance expansion link 53 ends are mounted on 1 powder shower nozzle 56, and often tool is long is mounted on 1 set of micropore biological filter screen 55 away from the end of expansion link 54, raw The both sides of thing fermentation cabin 52 are respectively provided with a set of thermostat 58, and its bottom is pacified altogether in the relative position of micropore biological filter screen 55 Equipped with 6 electric cabin doors 57, the operating voltage of expansion link motor and electric cabin door is 380V, and the operating voltage of powder shower nozzle is 15V, the aperture of its micropore biological filter screen are 25 μm, and the operating voltage of thermostat be 230V, temperature controlling range for 20 ~ 40 DEG C, temperature-controlled precision is 1.0 DEG C.After pH value regulation processing(PH value is 5.5 ~ 6.5 after processing)Heavy metal wastewater thereby pass through The inlet valve 51 of biofermentation-left bottom of heavy metal precipitation clarifier-tank 5 enters inside cleaning system, and 3 sets have been completed biology Fermentation process has simultaneously been attached with the micropore biological filter screens 55 of enough L-AAs under the long driving away from expansion link 54, through biology The electric cabin door 57 of the bottom of fermentation cabin 52 is dropped to below the water surface, occurs fully to contact with heavy metal wastewater thereby, micropore biological filter screen The L-AA adhered on 55 can be chemically reacted with the heavy metal ion in waste water, and water and nothing are insoluble in reference to generation The salt of poison, progressively it is deposited in pond body bottom and forms sludge containing heavy metal, this sludge promotes through electric expansion mud pusher 511, by Sludge row's mouth 510 of pond body bottom right side discharges the system and carries out harmless treatment, meanwhile, by removing heavy metals treatment and purification Waste water afterwards, the system is discharged by the flowing water Valve 59 of pond body right upper portion, into next treatment process;When micropore biological filter screen When the L-AA step-reaction adhered on 55 runs out of, micropore biological filter screen 55 can carry under the long driving away from expansion link 54 The water surface is risen from, biofermentation storehouse 52 is recycled to through electric cabin door 57, and other 3 sets have been completed biological fermentation process and have been attached with The micropore biological filter screen 55 of enough L-AAs is under the long driving away from expansion link 54, through the electronic of the bottom of biofermentation storehouse 52 Door 57 is dropped to below the water surface, and continuation reacts with heavy metal wastewater thereby, plays removing heavy metals catharsis, meanwhile, upper one 3 sets of micropore biological filter screens 55 being recycled in step in biofermentation storehouse 52, pass through 3 powder driven by short distance expansion link 53 The up and down motion of last shower nozzle 56, to the mixed-powder for uniformly spraying dish Xanthomonas campestris bacterial strain and D-Glucose thereon, and in biology 90min is stopped in fermentation cabin 52 to complete biological fermentation process, in this time, the automatic temperature-controlled dress of the both sides of biofermentation storehouse 52 58 are put to adjust temperature in storehouse to the temperature range of suitable dish Xanthomonas campestris growth(25~35℃), in the presence of D-Glucose, Lactonization reaction occurs inside dish Xanthomonas campestris, final fermentation output L-AA is simultaneously attached on micropore biological filter screen 55, It is regenerated the removing heavy metals purification function of micropore biological filter screen 55, micropore biological filter screen 55 is again through the long drive away from expansion link 54 Dynamic to drop to below the water surface, the micropore biological filter screen 55 before replacing it, continuation reacts with heavy metal wastewater thereby, plays except a huge sum of money Belong to catharsis, this biofermentation-precipitation reaction purification process moves in circles progress.
Heavy metal wastewater thereby after being handled by the system, the removal efficiency of its heavy metal ion is up to 99.2%.

Claims (2)

  1. A kind of 1. biofermentation-heavy metal precipitation clarifier-tank, it is characterised in that the pond of biofermentation-heavy metal precipitation clarifier-tank Body uses hard glass steel material, and pond body dischargeable capacity is 150m3, its pond body is divided into upper and lower two units, lower unit be except Heavy metal clean unit, its left lower are equipped with inlet valve and electric expansion mud pusher, and right upper portion is equipped with flowing water Valve, right For side lower part equipped with sludge row's mouth, middle part is reserved with the micropore biological filter screen of space decline so far;Upper unit is sent out for biology Ferment storehouse, dischargeable capacity 125m3, its top is respectively fixed with 6 tool short distance expansion links and 6 tools are long away from expansion link, and often the short distance of having is stretched Contracting bar end is mounted on 1 powder shower nozzle, and often tool is long is mounted on 1 set of micropore biological filter screen, micropore life away from expansion link end Thing filter screen is by the up and down motion of the 3 powder shower nozzles driven by short distance expansion link, to uniform sprinkling dish Xanthomonas campestris bacterium thereon Strain and the mixed-powder of D-Glucose, complete biological fermentation process, in the presence of D-Glucose, occur inside dish Xanthomonas campestris Lactonization reaction, final fermentation output L-AA are simultaneously attached on micropore biological filter screen, and biofermentation storehouse both sides are respectively installed There is a set of thermostat, its bottom in being provided with 6 electric cabin doors, electric cabin door altogether in micropore biological filter screen relative position Operating voltage be 380V, the operating voltage of powder shower nozzle is 15V.
  2. 2. biofermentation according to claim 1-heavy metal precipitation clarifier-tank, it is characterised in that biofermentation-heavy metal The aperture of the micropore biological filter screen in precipitation purification pond is 25 μm, and the operating voltage of its thermostat is 230V, temperature control Scope is 20 ~ 40 DEG C, and temperature-controlled precision is 1.0 DEG C.
CN201610152034.1A 2016-03-17 2016-03-17 A kind of biofermentation heavy metal precipitation clarifier-tank Active CN105621632B (en)

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DE4209180A1 (en) * 1992-03-20 1993-09-23 Schwarze Alois Arnold Heavy metal recovery - by adding organic degrading reduction agent to contaminated watery waste, for redn. into free metal for physical sepn.
WO2004108609A1 (en) * 2003-06-06 2004-12-16 Forskningscenter Risø Fermentation media comprising wastewater and use hereof
CN1966703A (en) * 2006-11-27 2007-05-23 葛忠良 Process for one-step fermentation production of gulonic acid (VC precursor) from glucose
CN101947381B (en) * 2009-07-08 2015-01-28 东曹株式会社 heavy metal treating agent and heavy metal pollutants treating method
CN103626306B (en) * 2013-12-05 2015-04-22 慈溪市宗汉弘盛塑料制品厂 Method for comprehensive application treatment of heavy metal ion wastewater

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