CN104163552B - A kind of method for processing organic wastewater - Google Patents
A kind of method for processing organic wastewater Download PDFInfo
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Abstract
A kind of method for processing organic wastewater, it adopts the organic filtration medium of compound to carry out filtration treatment to organic waste water, and the organic filtration medium of the compound prepared first is made up of following weight unit's raw material: organic materials 75-85, peat composed of rotten mosses 1-10, filter material 4-13, bacterial classification 0.5-2; When used compound organic filtration medium state is soft, toughness and when producing with stink, composite organic filter medium need be changed, composite organic filter medium is made up of the raw material of following weight unit's: organic materials 75-85, peat composed of rotten mosses 1-10, filter material are 4-13 and the old material of the organic filtration medium of used compound, and the content of the old material of the organic filtration medium of compound is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material total amount.The present invention has bio-oxidation, physical adsorption, physical filtering triple role, except can be used for high concentrated organic wastewater process, can also be used for the difficult degradation even process of poisonous organic wastewater.
Description
Technical field
The present invention relates to a kind of method of wastewater treatment, particularly utilize compound organic filtration medium organic waste water to be carried out to the method for filtration, purification process.
Background technology
Mostly the filtration medium that filtration step in existing engineering of water treatment is applied is the material such as gac, quartz sand, hard coal, magnetic magnesium ore deposit, fibrous nodules, polypropylene superfine fiber filter cloth, zeolite, wilkinite, diatomite, mould material, anion-cation exchange resin, activated carbon fiber.The absorption that above-mentioned conventional filtration media absorption section dirty material is all is cardinal principle with larger internal surface area and ion-exchange capacity is physical adsorption process.This physical adsorption way is better for the adsorption effect of the suspended substance (SS) in sewage.In addition, activated carbon fiber has good removal effect to the chlorion in sewage, colourity, turbidity, stink, phenols.But above filtration medium has the following disadvantages: 1. physical adsorption is applicable to the lower water quality of purifying contaminated substrate concentration, for the water quality then less effective that pollutent is higher; 2. cannot in water body compared with the organism of difficult degradation even toxic organic compound effectively process; 3. poor for the organic treatment effect of low ratio of carbon to ammonium in water body; 4. filtration medium regenerative process is complicated, as all can produced secondary pollution by alkali wash, thermal regeneration method and oxidizing method and wasting energy; Cause absorption property " the tired limit " and aging after several times regeneration, and then abandon and produce solid slag and pollute.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of method for processing organic wastewater with biochemistry filtered, physical adsorption, physical filtering triple role.
Problem alleged by the present invention is solved by following technical scheme:
A kind of method for processing organic wastewater, it adopts the organic filtration medium of compound to carry out filtration treatment to organic waste water, and the organic filtration medium of the compound prepared first is made up of following weight unit's raw material: organic materials 55-85, peat composed of rotten mosses 1-20, filter material 4-23, bacterial classification 0.5-2; When used compound organic filtration medium state is soft, toughness and when producing with stink, the organic filtration medium of composite compound need be changed, the organic filtration medium of composite compound is made up of the raw material of following weight unit's: organic materials 55-85, peat composed of rotten mosses 1-20, filter material are 4-23 and the old material of the organic filtration medium of used compound, and the content of the old material of the organic filtration medium of compound is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material gross weight.
Above-mentioned method for processing organic wastewater, the carbon-nitrogen ratio of described organic materials is greater than 25:1, and organic materials is one or more mixing of corn stalk, wheat straw, straw, peanut stems, melon vine, ginger straw, beanstalk, sorghum stalks, potato rattan, bagasse, cotton straw, wood chip, leaf, bark, edible mushrooms chaff, cotton seed hull, rice chaff, Pericarppium arachidis hypogaeae, potato slag, pomace; Described filter material comprises gac, quartz sand, hard coal, magnetic magnesium ore deposit, fibrous nodules, polypropylene superfine fiber filter cloth, zeolite, wilkinite, diatomite, mould material, anion-cation exchange resin or activated carbon fiber; Described bacterial classification is enzymatic microorganism or EM preparation.
Above-mentioned method for processing organic wastewater, organic materials is broken for the particle of particle diameter 0.5-3 centimetre, each raw material of the organic filtration medium of composition compound is taken according to proportioning, each raw material is mixed, leave standstill after adding the water mixing of raw material gross weight 40-60% again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, carry out filtration treatment to the organic waste water passed into, treating processes keeps mechanical stirring.
Above-mentioned method for processing organic wastewater, in organic waste water filter process, under normal temperature condition the waste water flow by the organic filtration medium of compound per hour be less than the organic filter media of compound long-pending 1/3rd.
Above-mentioned method for processing organic wastewater, leaves standstill in process when temperature is lower than 10 DEG C at the organic filtration medium of compound, need heat to 20 DEG C of process to it.
Above-mentioned method for processing organic wastewater, organic waste water through the organic filtration medium process of compound is flowed through conventional filtration media again and do in-depth process, conventional filtration media comprises gac, quartz sand, zeolite, wilkinite, diatomite, opal, vermiculite, perlite, sepiolite, mould material, anion-cation exchange resin, activated carbon fiber.
Above-mentioned method for processing organic wastewater, flows through ultraviolet disinfection facility again by the organic waste water through the organic filtration medium process of compound, disinfects.
Above-mentioned method for processing organic wastewater, flows through deoxygenator again by the organic waste water through the organic filtration medium process of compound, does deoxygenation process.
Above-mentioned method for processing organic wastewater, by the series combination tradition coagulating agent flocculation sediment again of the organic waste water through composite filter media process, further in-depth process organic matter wherein, described traditional coagulating agent comprises polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass.
Above-mentioned method for processing organic wastewater, carries out sofening treatment again by the organic waste water through the organic filtration medium process of compound.
The present invention is directed to raising filtration medium to improve organic waste water filtration treatment effect problem, the organic materials with high carbon-nitrogen ratio of mixture and the peat composed of rotten mosses, filter material and bacterial classification load in filtration vessel as the organic filtration medium of compound by it, the organic sewage passed into is filtered, under the triple role of bio-oxidation, physical adsorption, physical filtering, make the BOD.COD. suspended substance in processed organic waste water, ammonia nitrogen, nitre nitrogen, non-protein nitrogen(NPN), protein-n, phosphorus source fully removed, effectively reduce colourity and the stink of organic sewage.The organic filtration medium of described compound meets carbon source, nitrogenous source, moisture and oxygen source needed for microorganism growth, when the condition such as temperature, stirring meets, the production efficiency that microorganism is maximum can be given, and when its be in difficult degradation even in toxic organic compound environment time, microorganism in the organic filtration medium of compound has again larger variation efficiency, namely the change of mal-condition is deacclimatized by strain variation, therefore the inventive method is except can be used for high concentrated organic wastewater process, can also be used for the difficult degradation even process of poisonous organic wastewater.
Embodiment
The composite filter media that the present invention adopts is with the organic materials of high carbon-nitrogen ratio and the peat composed of rotten mosses, filter material and bacterial classification for raw material is made, and carry out filtration treatment to organic waste water, wherein, the carbon-nitrogen ratio of organic materials used is greater than 25:1.Using the main raw material of the organic materials of high carbon-nitrogen ratio as the organic filtration medium of compound, in biochemical reaction process, stronger " absorption " effect can be played to the higher nitrogenous source in waste water according to " carbon-nitrogen ratio equilibrium principle ", and under the condition of not open close oxygen stirring, microbial metabolites can be oxidized to water and carbonic acid gas, make filtering system have biodegradability, make the organism that is trapped oxidized very soon and decrease quality.According to weight unit in the organic filtration medium of the compound prepared first, organic materials is 55-85, and the peat composed of rotten mosses is 1-20, and filter material is 4-23, and bacterial classification is 0.5-2; When used compound organic filtration medium state is soft, toughness and when producing with stink, the organic filtration medium of composite compound need be changed, according to weight unit in the organic filtration medium of composite compound: organic materials is 55-85, the peat composed of rotten mosses is 1-20, filter material is 4-23, in addition add the old material of the organic filtration medium of used compound again, the content of the old material of the organic filtration medium of compound is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material total amount.One or more mixing such as selection corn stalk, wheat straw, straw, peanut stems, melon vine, ginger straw, beanstalk, sorghum stalks, potato rattan, bagasse, cotton straw, wood chip, leaf, bark, edible mushrooms chaff, cotton seed hull, rice chaff, Pericarppium arachidis hypogaeae, potato slag, pomace that described organic materials can be gathered materials on the spot.Described filter material comprises gac, quartz sand, hard coal, magnetic magnesium ore deposit, fibrous nodules, polypropylene superfine fiber filter cloth, zeolite, wilkinite, diatomite, mould material, anion-cation exchange resin or activated carbon fiber.Described bacterial classification is enzymatic microorganism or EM preparation.
Compound selected by the present invention organic filtration medium material characteristic is as follows: 1, the organic materials of high carbon-nitrogen ratio is agricultural, light industry byproduct, is waste recycling.In the organic materials of high carbon-nitrogen ratio Mierocrystalline cellulose and content of lignin high, crude protein and digestible energy content lower.Namely the carbon-nitrogen ratio in its element structure is higher, can reach 60-65:1.In Mierocrystalline cellulose, hemicellulose, lignin molecule structure, neutral covalent linkage accounts for the overwhelming majority, and supersaturation key, saturated bond are in the majority, and unsaturated link(age) and ionic linkage are little, character torpescence.2, the peat composed of rotten mosses (peat): be bury the product of organism after earth biochemistry, brown or the brownish blacks such as more shallow weeds, leaf in swampland and virgin forest.It is the intermediate product of weeds, leaf, coal-forming.This type organic is (60-65:1) except carbon-nitrogen ratio is higher, the carboxyl on its molecular structure and unsaturated link(age) more, show as more weak acidity and the shock-absorbing capacity to acid or alkali environment.3, bacterial classification: adopt enzymatic microorganism or EM preparation (composite flora) or other profitable strain through technical evaluation.
The preparation process of the organic filtration medium of described compound is as follows: particle organic materials being broken for particle diameter 0.5-3 centimetre, according to just to join or composite proportioning raw materials takes composition and has each raw material of compounding machine filtration medium, each raw material is mixed, leave standstill after adding the water mixing of raw material gross weight 40-60% again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.The organic filtration medium of compound leaves standstill in process when temperature is lower than 10 DEG C, need heat to 20 DEG C of process to it.As: in the organic filtration medium of the compound of banking up, insert metal vessel, the built-in suitable quantity of water of container, then electric water heater appropriateness is inserted in water, connect with the mains, time after stockpile temperature raises to 20 DEG C, then remove electric heater.
The organic filtration medium of compound of the present invention, when carrying out filtration treatment to organic waste water, need give mechanical stirring and lead to oxygen.Under the temperature condition of 10-40 degree Celsius, microorganism species acute activation in high carbon-nitrogen ratio organic materials, growth, breeding, microorganism then with stalk and the peat composed of rotten mosses for idiotrophic source, eccrine fiber element enzyme, Mierocrystalline cellulose and xylogen are resolved into idiotrophic source by the enzyme systems such as lignoenzyme, but due to the organism that nutrition source is high carbon-nitrogen ratio, microorganism has too much carbon source in growth and breeding metabolic process, and nitrogenous source is not enough, again because microbial growth reproductive process is process external source Carbon and nitrogen sources being formed self tropina, i.e. carbon-nitrogen ratio equilibrium process, the organism of high carbon-nitrogen ratio will absorb external source nitrogenous source as a supplement under the effect of microorganism, nitrogen " potential energy " is inhaled so produce.When ammonia nitrogen entrained in the waste water of required process, nitre nitrogen, protein-n, non-protein nitrogen(NPN) flow through, changed into the nutrition source of microorganism self by the organic filter media institute " intercepting and capturing " of compound, to generate the nutrition source of water, carbonic acid gas, nitrogen, unsaturated organic acid class meta-bolites and microorganism self.And when there being unsaturated compounds in microbial metabolites, due to the effect of the carboxyl on unsaturated organic acid molecular structure, phenolic hydroxyl group, enol base isoreactivity functional group and unsaturated covalent linkage, greatly strengthen relative to the activity of the organic Mierocrystalline celluloses such as former stalk, hemicellulose, xylogen, namely change into active substance by inertia organic matter.The heavy metal that such organic matter is easy in the water that need process is combined with other active organic matter, and then formation heavy metal chelate (or complex compound) makes heavy metal and other organic matter lose activity and by " passivation ", reduce the harm that it discharges in environment.
The peat composed of rotten mosses is added in the organic filtration medium of described compound, be because the effect of carboxyl abundant on peat composed of rotten mosses molecular structure, phenolic hydroxyl group enol Ji Deng slightly acidic functional group and unsaturated link(age) is to the natural effect actively of the heavy metal in process water and other organic matter, can make up " the deficient phase " of organic acid in filter media systems before microflora maturation and unsaturated link(age) class material.Because the raw material forming the peat composed of rotten mosses is weeds, trees, leaf etc., so the peat composed of rotten mosses is also high carbon-nitrogen ratio raw material, have after microbial decomposition and act synergistically with stalk organism, BOD.COD. suspended substance in processed water, ammonia nitrogen, nitre nitrogen, non-protein nitrogen(NPN), protein-n, phosphorus source fully can be removed, thus the colourity of water and stink are reduced.
Filter material is added in the organic filtration medium of described compound, the deficiency of organic materials and peat composed of rotten mosses filter material can be made up, the two is had complementary advantages, such as filter material can make up the more weak deficiency of organic materials biological process absorption property in early stage, because the Mierocrystalline cellulose of the organic materials in this period, xylogen etc. are not still by sufficient biochemical oxidation.
In sum, the organic filtration medium of compound of the present invention meets carbon source, nitrogenous source, moisture, oxygen source needed for microorganism growth, suitable (in normal temperature 20 degrees centigrade situation in volume preparation, the waste water flow by the organic filtration medium of compound per hour is to be less than long-pending 1/3rd being advisable of the organic filter media of compound), mechanical stirring abundant time, filtering system temperature can be made to be controlled in optimum temps 10-40 DEG C of scopes, so the organic filtration medium of this compound gives microorganism maximum production efficiency.When be in difficult degradation even in toxic organic compound environment time, the organic filtration medium of this compound has again larger variation efficiency, namely the change of mal-condition is deacclimatized by strain variation, therefore the inventive method is except can be used for high concentrated organic wastewater process, can also be used for the difficult degradation even process of poisonous organic wastewater.
When the organic filtration medium of described compound obtains soft, toughness and when producing with stink, show that the organic filtration medium of this compound is aging, the organic filtration medium of compound should be changed.Now need to retain the old material of the small part organic filtration medium of used compound, use as composite material together with after mixing with organic materials, the peat composed of rotten mosses, filter material.Bacterial classification is substituted with used old material, this is because the carbon-nitrogen ratio in old material system reaches or close to 20-25:1 time composite.More ripe microecosystem is had in old material, it is the microecosystem of after several times variation winning relatively " harmony " of slightly eliminating, its cycle applications in lower batch of material, new and old compound is made to form more rapidly relatively the microecosystem of " harmony ", reduce winning " evolution " process of slightly eliminating between various microorganism, shorten processing maturation period.
Several specific embodiment of the present invention is below provided:
Embodiment 1. takes the particle high carbon-nitrogen ratio type organic material 85Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 20Kg, filter material 23kg, bacterial classification 2Kg, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 75Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Embodiment 2. takes the particle high carbon-nitrogen ratio type organic material 75Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 5Kg, filter material 7kg, bacterial classification 1.5Kg, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 48Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Embodiment 3. takes the particle high carbon-nitrogen ratio type organic material 55Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 1Kg, filter material 4kg, bacterial classification 0.5Kg, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 25Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Embodiment 4. takes the particle high carbon-nitrogen ratio type organic material 85Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 15Kg, filter material 23kg, the old material 2.5Kg of the organic filtration medium of compound, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 66Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Embodiment 5. takes the particle high carbon-nitrogen ratio type organic material 55Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 1Kg, filter material 10kg, the old material 0.4Kg of the organic filtration medium of compound, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 36Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Embodiment 6. takes the particle high carbon-nitrogen ratio type organic material 70Kg that particle diameter is 0.5-3 centimetre, peat composed of rotten mosses 7Kg, filter material 17kg, the old material 1.8Kg of the organic filtration medium of compound, above-mentioned each raw material is mixed, leave standstill after adding the water mixing of 54Kg again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, filtration treatment is carried out to the organic waste water passed into.
Through the organic filtration medium of compound of the present invention to after organic waste water filtration treatment, Organic substance in water significantly reduces, water temperature raises simultaneously, and the temperature of the water needed for most suitable traditional A/O bioremediation, this point overcomes the difficult problem that microthermal climate is disposed of sewage to biological method especially.It can be used as the pre-treatment of traditional A/O method, efficiency and the subject range of water treatment can be substantially increased.
Water after the organic filter media process of compound of the present invention, flow through the conventional filtration media such as gac, quartz sand, zeolite, wilkinite, diatomite, opal, vermiculite, perlite, sepiolite, mould material, anion-cation exchange resin, activated carbon fiber again to filter, carry out water treatment as combined system, then the effect of water treatment improves greatly.The former is the triple role having bio-oxidation, physical adsorption, physical filtering concurrently, and the latter can remove chlorion, colourity and stink in water further.
Water after composite filter media of the present invention filters, can the wherein unnecessary organic matter of the traditional coagulating agent flocculation sediment of series combination, and the further in-depth for water processes.So-called coagulating agent refers to polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass etc.
Water after the organic filter media process of compound of the present invention, before entering other advanced treatment process except biological method, flow through disinfection by ultraviolet light facility, make it to become conjunctiva or qualified discharge in combined water treatment equipment or other industrial water circulation system.
As required by the water after the organic filter media process of compound of the present invention, deoxygenator can be sent into further deoxidation, prevents the oxidation to upstream device.
The inventive method is in organic waste water filter process, a large amount of organic monoacids can be produced, and these organic monoacids easily react with Calcium hydrogen carbonate in water and Magnesium hydrogen carbonate the salt of weak acid generating calcium and magnesium and precipitate, thus be deposited on the surface that the organic filtration medium of compound mixes.Therefore, the inventive method can be used for the sofening treatment of water quality, and uses common for water softening process with traditional water softening system series combination.
The inventive method has stronger decomposition oxidative function, and it can be used for the process of oily(waste)water, or does pre-treatment or the aftertreatment of traditional oil water removal treatment process.Due to the stalk in this system organic " dilution " function, certain " dilution " effect is played for the salinity (as pharmacy, papermaking, process hides, printing and dyeing etc.) in saliferous (sodium-chlor, sodium sulfate etc.) waste water, so can salt concentration in reduction system, overcome the defect that brine waste biodegradability is poor.
Claims (9)
1. a method for processing organic wastewater, it is characterized in that: it adopts the organic filtration medium of compound to carry out filtration treatment to organic waste water, and the organic filtration medium of the compound prepared first is made up of following weight unit's raw material: organic materials 55-85, peat composed of rotten mosses 1-20, filter material 4-23, bacterial classification 0.5-2; When used compound organic filtration medium state is soft, toughness and when producing with stink, the organic filtration medium of composite compound need be changed, the organic filtration medium of composite compound is made up of the raw material of following weight unit's: organic materials 55-85, peat composed of rotten mosses 1-20, filter material are 4-23 and the old material of the organic filtration medium of used compound, and the content of the old material of the organic filtration medium of compound is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material gross weight;
The carbon-nitrogen ratio of described organic materials is greater than 25:1, and organic materials is one or more mixing of corn stalk, wheat straw, straw, peanut stems, melon vine, ginger straw, beanstalk, sorghum stalks, potato rattan, bagasse, cotton straw, wood chip, leaf, bark, edible mushrooms chaff, cotton seed hull, rice chaff, Pericarppium arachidis hypogaeae, potato slag, pomace; Described filter material comprises gac, quartz sand, hard coal, magnetic magnesium ore deposit, fibrous nodules, polypropylene superfine fiber filter cloth, zeolite, wilkinite, diatomite, mould material, anion-cation exchange resin or activated carbon fiber; Described bacterial classification is enzymatic microorganism or EM preparation.
2. method for processing organic wastewater according to claim 1, it is characterized in that: particle organic materials being broken for particle diameter 0.5-3 centimetre, each raw material of the organic filtration medium of composition compound is taken according to proportioning, each raw material is mixed, leave standstill after adding the water mixing of raw material gross weight 40-60% again, can load in filtration vessel when its temperature is raised to more than 35 degrees Celsius, carry out filtration treatment to the organic waste water passed into, treating processes keeps mechanical stirring.
3. method for processing organic wastewater according to claim 2, is characterized in that: in organic waste water filter process, under normal temperature condition the waste water flow by the organic filtration medium of compound per hour be less than the organic filter media of compound long-pending 1/3rd.
4. method for processing organic wastewater according to claim 3, is characterized in that: leave standstill in process when temperature is lower than 10 DEG C at the organic filtration medium of compound, need heat to 20 DEG C of process to it.
5. method for processing organic wastewater according to claim 4, it is characterized in that: the organic waste water through the organic filtration medium process of compound is flowed through conventional filtration media again and do in-depth process, conventional filtration media comprises gac, quartz sand, zeolite, wilkinite, diatomite, opal, vermiculite, perlite, sepiolite, mould material, anion-cation exchange resin, activated carbon fiber.
6. method for processing organic wastewater according to claim 4, is characterized in that: the organic waste water through the organic filtration medium process of compound is flowed through ultraviolet disinfection facility again, disinfects.
7. method for processing organic wastewater according to claim 4, is characterized in that: the organic waste water through the organic filtration medium process of compound is flowed through deoxygenator again, does deoxygenation process.
8. method for processing organic wastewater according to claim 4, it is characterized in that: by the series combination tradition coagulating agent flocculation sediment again of the organic waste water through composite filter media process, further in-depth process organic matter wherein, described traditional coagulating agent comprises polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass.
9. method for processing organic wastewater according to claim 4, is characterized in that: the organic waste water through the organic filtration medium process of compound is carried out sofening treatment again.
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| CN104759149A (en) * | 2015-03-18 | 2015-07-08 | 蚌埠德美过滤技术有限公司 | High-activity composite filter material prepared by blending melt-blown polypropylene with modified kaolin and used for sewage treatment and preparation method thereof |
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| CN106335946A (en) * | 2016-11-17 | 2017-01-18 | 郑州郑先医药科技有限公司 | Highly efficient environment friendly waste water treatment agent |
| CN106379979A (en) * | 2016-11-17 | 2017-02-08 | 郑州郑先医药科技有限公司 | Environment-friendly sewage treating agent |
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