CN104163552A - Organic wastewater treatment method - Google Patents
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- CN104163552A CN104163552A CN201410449349.3A CN201410449349A CN104163552A CN 104163552 A CN104163552 A CN 104163552A CN 201410449349 A CN201410449349 A CN 201410449349A CN 104163552 A CN104163552 A CN 104163552A
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Abstract
The invention relates to an organic wastewater treatment method. A composite organic filtering medium is utilized to perform filtration treatment on organic wastewater, wherein the composite organic filtering medium prepared for the first time is composed of the following raw materials in parts by weight: 75-85 parts of organic matter, 1-10 parts of grass carbon, 4-13 parts of filter material and 0.5-2 parts of strain. When the used composite organic filtering medium becomes floppy and sticky and generates stink, a compound organic filtering medium is used for replacement, wherein the compound organic filtering medium is composed of the following raw materials in parts by weight: 75-85 parts of organic matter, 1-10 parts of grass carbon, 4-13 parts of filter material and the used composite organic filtering medium; and the used composite organic filtering medium accounts for 0.5-2% of the sum of organic matter, grass carbon and filter material. The method has the triple functions of biological oxidation, physical adsorption and physical filtration, and can be used for high-concentration organic wastewater treatment and nondegradable and even toxic organic wastewater treatment.
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 processing.
Background technology
Mostly the applied filtration medium of filtration step in existing engineering of water treatment is the materials 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.It is all the absorption taking larger internal surface area and ion-exchange capacity as cardinal principle that the absorption of above-mentioned conventional filtration media cuts dirty material, is physical adsorption process.This physical adsorption way is better for the adsorption effect of the suspended substance in sewage (SS).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 water quality that purifying contaminated substrate concentration is lower, and for water quality that pollutent is higher, effect is not good enough; 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 complexity, as all can produced secondary pollution and waste energy by alkali wash, thermal regeneration method and oxygenant oxidation style; After several times regeneration, cause absorption property " the tired limit " and aging, and then abandon and produce solid slag and pollute.
Summary of the invention
Technical problem to be solved by this invention is: a kind of method for processing organic wastewater with biochemistry filtered, physical adsorption, physical filtering triple role is provided.
The alleged problem of the present invention is solved by following technical scheme:
A kind of method for processing organic wastewater, it adopts compound organic filtration medium to carry out filtration treatment to organic waste water, and compound organic filtration medium of preparation is made up of following weight unit's raw material first: 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 while producing with stink, need to change composite compound organic filtration medium, composite compound organic filtration medium 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 used compound organic filtration medium, and the content of the old material of compound organic filtration medium 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 to the particle of particle diameter 0.5-3 centimetre, take each raw material of the compound organic filtration medium of composition according to proportioning, each raw material is mixed, add again the water of raw material gross weight 40-60% to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment, 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 compound organic filtration medium per hour is less than 1/3rd of compound organic filtration medium volume.
Above-mentioned method for processing organic wastewater, leaves standstill in process when temperature is during lower than 10 DEG C at compound organic filtration medium, need heat to 20 DEG C of processing to it.
Above-mentioned method for processing organic wastewater, the organic waste water of processing through the compound organic filtration medium conventional filtration media of flowing through is again done and deepened processing, and 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, by the organic waste water of processing through the compound organic filtration medium ultraviolet disinfection facility of flowing through again, disinfects.
Above-mentioned method for processing organic wastewater, by the organic waste water of processing through the compound organic filtration medium deoxygenator of flowing through again, does deoxygenation processing.
Above-mentioned method for processing organic wastewater, by the organic waste water of processing through composite filter media series combination tradition coagulating agent flocculation sediment again, further organic matter is wherein processed in in-depth, and described traditional coagulating agent comprises polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass.
Above-mentioned method for processing organic wastewater, softens processing again by the organic waste water of processing through compound organic filtration medium.
The present invention is directed to raising filtration medium improves organic waste water filtration treatment effect problem, it packs the organic materials with high carbon-nitrogen ratio of mixture and the peat composed of rotten mosses, filter material and bacterial classification in filtration vessel into as compound organic filtration medium, the organic sewage passing into is filtered, under the triple role of bio-oxidation, physical adsorption, physical filtering, BOD.COD. suspended substance, ammonia nitrogen, nitre nitrogen, non-protein nitrogen(NPN), protein-n, phosphorus source in processed organic waste water are fully removed, effectively reduce colourity and the stink of organic sewage.Described compound organic filtration medium has met required carbon source, nitrogenous source, moisture and the oxygen source of microorganism growth, in the time that the condition such as temperature, stirring meets, can give the production efficiency of microorganism maximum, and when it is in the time that difficult degradation is even in toxic organic compound environment, microorganism in compound organic filtration medium has again larger variation efficiency, make a variation and deacclimatize the variation of mal-condition by bacterial strain, therefore the inventive method, except can be used for high concentrated organic wastewater processing, can also be used for the even processing of poisonous organic wastewater of difficult degradation.
Embodiment
The composite filter media that the present invention adopts is made as raw material taking organic materials and the peat composed of rotten mosses, filter material and the bacterial classification of high carbon-nitrogen ratio, and organic waste water is carried out to filtration treatment, and wherein, the carbon-nitrogen ratio of organic materials used is greater than 25:1.Main raw material using the organic materials of high carbon-nitrogen ratio as compound organic filtration medium, in biochemical reaction process, can play stronger " absorption " effect according to " carbon-nitrogen ratio equilibrium principle " to the higher nitrogenous source in waste water, and under the condition stirring at not open close oxygen, microbial metabolites can be oxidized to water and carbonic acid gas, make filtering system there is biodegradability, make the organism that is trapped very fast oxidized and reduced quality.In compound organic filtration medium of preparing first, according to weight unit, 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 while producing with stink, need to change composite compound organic filtration medium, in composite compound organic filtration medium according to weight unit: organic materials is that 55-85, the peat composed of rotten mosses are that 1-20, filter material are 4-23, in addition add the old material of used compound organic filtration medium, the content of the old material of compound organic filtration medium is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material total amount again.One or more mixing such as selection corn stalk that described organic materials can be gathered materials on the spot, 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.
The selected compound organic filtration medium material characteristic of the present invention 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 are high, and crude protein and digestible energy content are lower.Be that 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 to bury product, brown or the brownish black of the more shallow organism such as weeds, leaf after earth biochemistry 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, and carboxyl and unsaturated link(age) on its molecular structure are more, shows as 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 described compound organic filtration medium is as follows: organic materials is broken for to the particle of particle diameter 0.5-3 centimetre, according to just joining or composite proportioning raw materials takes composition and has each raw material of compounding machine filtration medium, each raw material is mixed, add again the water of raw material gross weight 40-60% to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.Compound organic filtration medium leaves standstill in process when temperature is during lower than 10 DEG C, need heat to 20 DEG C of processing to it.As: in compound organic filtration medium of banking up, insert metal vessel, the built-in suitable quantity of water of container, then electric water heater appropriateness is inserted in water, connects with the mains, and after stockpile temperature raises during to 20 DEG C, then removes electric heater.
Compound organic filtration medium of the present invention, in the time that organic waste water is carried out to filtration treatment, need give mechanical stirring logical oxygen.Under the temperature condition of 10-40 degree Celsius, microorganism species in high carbon-nitrogen ratio organic materials activates rapidly, growth, breeding, microorganism is taking stalk and the peat composed of rotten mosses as idiotrophic source, eccrine fiber element enzyme, Mierocrystalline cellulose and xylogen are resolved into idiotrophic source by the enzyme systems such as lignoenzyme, but because nutrition source is the organism of high carbon-nitrogen ratio, microorganism has too much carbon source in growth and breeding metabolic process, and nitrogenous source deficiency, again because microbial growth reproductive process is by the process of external source Carbon and nitrogen sources formation self tropina, it is 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, inhale nitrogen " potential energy " so produce.In the time that ammonia nitrogen entrained in the waste water of required processing, nitre nitrogen, protein-n, non-protein nitrogen(NPN) are flowed through, by compound organic filter media institute " intercepting and capturing " and change into the nutrition source of microorganism self, generate the nutrition source of water, carbonic acid gas, nitrogen, unsaturated organic acid class meta-bolites and microorganism self.And in the time having 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, activity with respect to the organic Mierocrystalline celluloses such as former stalk, hemicellulose, xylogen strengthens greatly, changes into active substance by inertia organic matter.Such organic matter is easy to be combined with heavy metal and other active organic matter in the water of need processing, and then forms heavy metal chelate (or complex compound) and heavy metal and other organic matter are lost activity and by " passivation ", reduces it to the harm of discharging in environment.
In described compound organic filtration medium, add the peat composed of rotten mosses, be because the effect of abundant carboxyl, phenolic hydroxyl group enol Ji Deng slightly acidic functional group and unsaturated link(age) is to the heavy metal in processing water and the natural positive effect of other organic matter on peat composed of rotten mosses molecular structure, can make up microflora maturation organic acid in the past and " the deficient phase " of unsaturated link(age) class material in filter media systems.Because the raw material that forms 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, after microorganism is decomposed, have with stalk organism and act synergistically, BOD.COD. suspended substance in processed water, ammonia nitrogen, nitre nitrogen, non-protein nitrogen(NPN), protein-n, phosphorus source can fully be removed, thereby the colourity of water and stink are reduced.
In described compound organic filtration medium, add filter material, can make up the deficiency of organic materials and peat composed of rotten mosses filter material, the two mutual supplement with each other's advantages, for example filter material can make up the weak deficiency of organic materials biological process absorption property in early stage, because Mierocrystalline cellulose, the xylogen etc. of the organic materials in this period be not still by sufficient biochemical oxidation.
In sum, the compound organic filtration medium of the present invention has met required carbon source, nitrogenous source, moisture, the oxygen source of microorganism growth, suitable (in 20 degrees Celsius of left and right situations of normal temperature in volume preparation, the waste water flow by compound organic filtration medium per hour is advisable to be less than 1/3rd of compound organic filtration medium volume), mechanical stirring is when abundant, can make filtering system temperature be controlled at 10-40 DEG C of scopes of optimum temps, so this compound organic filtration medium has given the production efficiency of microorganism maximum.When in the time that difficult degradation is even in toxic organic compound environment, this compound organic filtration medium has again larger variation efficiency, make a variation and deacclimatize the variation of mal-condition by bacterial strain, therefore the inventive method, except can be used for high concentrated organic wastewater processing, can also be used for the even processing of poisonous organic wastewater of difficult degradation.
When described compound organic filtration medium obtains softly, toughness and while producing with stink, shows that this compound organic filtration medium is aging, should change compound organic filtration medium.Now need to retain the old material of the used compound organic filtration medium of small part, use as composite material together with after organic materials, the peat composed of rotten mosses, filter material mixing.When composite, substitute bacterial classification with used old material, this is because the carbon-nitrogen ratio in old material system reaches or approaches 20-25:1.In old material, there is more ripe microecosystem, it is the winning relatively microecosystem of " harmony " of slightly eliminating after several times variation, its cycle applications in lower batch of material, make new and old compound form relatively more rapidly the microecosystem of " harmony ", reduce winning " evolution " process of slightly eliminating between various microorganisms, shorten processing maturation period.
Several specific embodiment of the present invention is below provided:
It is the high carbon-nitrogen ratio type organic of the particle material 85Kg of 0.5-3 centimetre that embodiment 1. takes particle diameter, the peat composed of rotten mosses 20 Kg, filter material 23kg, bacterial classification 2 Kg, above-mentioned each raw material is mixed, add again the water of 75 Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
It is the high carbon-nitrogen ratio type organic of the particle material 75Kg of 0.5-3 centimetre that embodiment 2. takes particle diameter, the peat composed of rotten mosses 5 Kg, filter material 7kg, bacterial classification 1.5 Kg, above-mentioned each raw material is mixed, add again the water of 48 Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
It is the high carbon-nitrogen ratio type organic of the particle material 55Kg of 0.5-3 centimetre that embodiment 3. takes particle diameter, the peat composed of rotten mosses 1 Kg, filter material 4kg, bacterial classification 0.5 Kg, above-mentioned each raw material is mixed, add again the water of 25 Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
It is the high carbon-nitrogen ratio type organic of the particle material 85Kg of 0.5-3 centimetre that embodiment 4. takes particle diameter, the peat composed of rotten mosses 15 Kg, filter material 23kg, old material 2.5 Kg of compound organic filtration medium, above-mentioned each raw material is mixed, add again the water of 66 Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
It is the high carbon-nitrogen ratio type organic of the particle material 55Kg of 0.5-3 centimetre that embodiment 5. takes particle diameter, the peat composed of rotten mosses 1 Kg, filter material 10kg, old material 0.4 Kg of compound organic filtration medium, above-mentioned each raw material is mixed, add again the water of 36 Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
It is the high carbon-nitrogen ratio type organic of the particle material 70Kg of 0.5-3 centimetre that embodiment 6. takes particle diameter, the peat composed of rotten mosses 7 Kg, filter material 17kg, old material 1.8 Kg of compound organic filtration medium, above-mentioned each raw material is mixed, add again the water of 54Kg to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment.
After the compound organic filtration medium of the present invention is to organic waste water filtration treatment, in water, organism significantly reduces, simultaneously water temperature raises, the temperature of the required water of most suitable traditional A/O bioremediation, and this point has overcome the difficult problem that microthermal climate is disposed of sewage to biological method especially.Set it as the pre-treatment of traditional A/O method, can greatly improve efficiency and the subject range of water treatment.
Through the compound organic filter media of the present invention water after treatment, the conventional filtration media such as gac, quartz sand, zeolite, wilkinite, diatomite, opal, vermiculite, perlite, sepiolite, mould material, anion-cation exchange resin, the activated carbon fiber of flowing through are again filtered, carry out water treatment as combined system, the effect of water treatment improves greatly.The former is the triple role that has bio-oxidation, physical adsorption, physical filtering concurrently, and the latter can further remove chlorion, colourity and stink in water.
Water after composite filter media of the present invention filters, wherein unnecessary organic matter of can series combination traditional coagulating agent flocculation sediment, for the further in-depth processing of water.So-called coagulating agent refers to polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass etc.
Through the compound organic filter media of the present invention water after treatment, before other advanced treatment process entering except biological method, the disinfection by ultraviolet light facility of flowing through, makes it to become conjunctiva or qualified discharge in combined water treatment equipment or other industrial water circulation system.
Can, as required by through the compound organic filter media of the present invention water after treatment, send into deoxygenator with further deoxidation, prevent the oxidation to upstream device.
The inventive method is in to organic waste water filter process, can produce a large amount of organic monoacids, and these organic monoacids easily react the salt of weak acid precipitation that generates calcium and magnesium with Calcium hydrogen carbonate in water and Magnesium hydrogen carbonate, thereby be deposited on the mixed surface of compound organic filtration medium.Therefore, the inventive method can be used for the softening processing of water quality, and uses jointly for water softening processing with traditional water softening system series combination.
The inventive method has stronger decomposition oxidative function, and it can be used for the processing 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, play certain " dilution " effect for the salinity (as pharmacy, papermaking, process hides, printing and dyeing etc.) in saliferous (sodium-chlor, sodium sulfate etc.) waste water, so the salt concentration in can reduction system, overcomes the poor defect of brine waste biodegradability.
Claims (10)
1. a method for processing organic wastewater, it is characterized in that: it adopts compound organic filtration medium to carry out filtration treatment to organic waste water, and compound organic filtration medium of preparation is made up of following weight unit's raw material first: 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 while producing with stink, need to change composite compound organic filtration medium, composite compound organic filtration medium 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 used compound organic filtration medium, and the content of the old material of compound organic filtration medium is the 0.5-2% of organic materials, the peat composed of rotten mosses and filter material gross weight.
2. method for processing organic wastewater according to claim 1, it is characterized in that: the carbon-nitrogen ratio of described organic materials is greater than 25:1, 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.
3. method for processing organic wastewater according to claim 2, it is characterized in that: organic materials is broken for to the particle of particle diameter 0.5-3 centimetre, take each raw material of the compound organic filtration medium of composition according to proportioning, each raw material is mixed, add again the water of raw material gross weight 40-60% to mix rear leaving standstill, in the time that its temperature is raised to more than 35 degrees Celsius, can pack in filtration vessel, the organic waste water passing into is carried out to filtration treatment, treating processes keeps mechanical stirring.
4. method for processing organic wastewater according to claim 3, is characterized in that: in organic waste water filter process, under normal temperature condition, the waste water flow by compound organic filtration medium per hour is less than 1/3rd of compound organic filtration medium volume.
5. method for processing organic wastewater according to claim 4, is characterized in that: leave standstill in process when temperature is during lower than 10 DEG C at compound organic filtration medium, need heat to 20 DEG C of processing to it.
6. method for processing organic wastewater according to claim 5, it is characterized in that: the organic waste water of processing through the compound organic filtration medium conventional filtration media of flowing through is again done and deepened processing, and conventional filtration media comprises gac, quartz sand, zeolite, wilkinite, diatomite, opal, vermiculite, perlite, sepiolite, mould material, anion-cation exchange resin, activated carbon fiber.
7. method for processing organic wastewater according to claim 5, is characterized in that: by the organic waste water of processing through the compound organic filtration medium ultraviolet disinfection facility of flowing through again, disinfect.
8. method for processing organic wastewater according to claim 5, is characterized in that: by the organic waste water of processing through the compound organic filtration medium deoxygenator of flowing through again, do deoxygenation processing.
9. method for processing organic wastewater according to claim 5, it is characterized in that: by the organic waste water of processing through composite filter media series combination tradition coagulating agent flocculation sediment again, further organic matter is wherein processed in in-depth, and described traditional coagulating agent comprises polymerize aluminum chloride, ferrous sulfate, polyacrylamide, water glass.
10. method for processing organic wastewater according to claim 5, is characterized in that: the organic waste water of processing through compound organic filtration medium is softened to processing again.
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| CN106006795A (en) * | 2016-07-25 | 2016-10-12 | 广西南宁栩兮科技有限公司 | Bagasse, bentonite and kaolin composite wastewater treatment agent |
| 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 |
| CN106745797A (en) * | 2016-11-25 | 2017-05-31 | 南宁市黑晶信息技术有限公司 | Special high efficiency sewage treating agent of a kind of sugar production wastewater and preparation method thereof |
| CN106746072A (en) * | 2016-12-08 | 2017-05-31 | 苏州陈恒织造有限公司 | A kind of combined type treatment method for rural sewage |
| CN106746073A (en) * | 2016-12-08 | 2017-05-31 | 苏州陈恒织造有限公司 | A kind of water-saving Central water purification processing system and method |
| CN107999041A (en) * | 2017-12-25 | 2018-05-08 | 佛山市中环环境检测中心 | A kind of preparation method of Wastewater processing absorbent |
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