CN109896712B - Integrated treatment process for green hospital sewage - Google Patents
Integrated treatment process for green hospital sewage Download PDFInfo
- Publication number
- CN109896712B CN109896712B CN201910280185.9A CN201910280185A CN109896712B CN 109896712 B CN109896712 B CN 109896712B CN 201910280185 A CN201910280185 A CN 201910280185A CN 109896712 B CN109896712 B CN 109896712B
- Authority
- CN
- China
- Prior art keywords
- sewage
- multiplied
- magnetic
- tank
- biological
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The invention relates to an integrated treatment process for sewage of a green hospital, belonging to the technical field of sewage treatment. In order to solve the problem that the existing hospital sewage treatment method cannot completely remove pathogenic microorganisms and organic matters, the invention provides a green hospital sewage integrated treatment process, wherein hospital sewage sequentially passes through a septic tank, a grid net, an adjusting tank, a biological tank, a super-magnetic separation system and a mud-water separation system; ABS microbial agents are added into the septic tank and the biological tank, and primary degradation and complete degradation are sequentially carried out on pollutants such as COD, BOD, SS, Escherichia coli, TN and the like; and (4) the sewage treated by the biological tank enters a super-magnetic separation system to remove insoluble pollutants. The ABS microbial agent treatment method is effectively combined with the super-magnetic separation water treatment method, the environmental protection problem that the hospital sewage treatment does not reach the standard is solved, chemical agents are not needed for disinfection, the sewage treatment cost is saved, secondary pollution is avoided, the standard discharge is realized, and the reclaimed water can be recycled.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an integrated treatment process for sewage in a green hospital.
Background
The hospital sewage mainly comes from sewage discharged from diagnosis and treatment rooms, sickrooms, laboratories, operating rooms, laundry rooms, administrative departments, canteens, dormitories and the like, the main pollutants are organic pollutants, pathogenic microorganisms and viruses, and the substandard hospital sewage treatment is always an important factor harmful to the environment.
Pathogenic microorganisms have certain adaptability in the environment, some pathogenic microorganisms can survive in sewage for a long time, and the pathogenic microorganisms have the hazards of space pollution, acute infection and latent infection. If hospital sewage containing pathogenic microorganisms is discharged into urban sewer pipelines or environmental water bodies without being disinfected, the water bodies are often polluted, various diseases and infectious diseases are caused, and the health of people is seriously harmed. Besides pathogenic microorganisms, hospital sewage also contains various pollutants such as residual medicines, toxic chemical substances and the like, and the pollutants are directly discharged into water bodies without treatment or improper treatment, so that the pollution to surrounding water areas, soil and the like is serious, and the daily life of people is damaged.
The existing hospital sewage treatment method discharges after deslagging by a grid and disinfection, hypochlorous acid or chlorine dioxide disinfectant is adopted, residual chlorine and bacteriological indexes do not reach the standard, and organic matters are not removed. Disinfectants such as hypochlorites or chlorine dioxide generate harmful odor to pollute the environment, and the water body is easy to turn black and foul again after reduction to form secondary pollution. And disinfectants such as hypochlorites or chlorine dioxide are expensive and large in using amount, thereby bringing serious economic burden to hospitals.
Disclosure of Invention
The invention provides a green hospital sewage integrated treatment process, aiming at solving the problem that the existing hospital sewage treatment method cannot completely remove pathogenic microorganisms and organic matters.
The technical scheme of the invention is as follows:
a green hospital sewage integrated treatment process comprises the steps that hospital sewage sequentially passes through a septic tank, a grid net, a regulating tank, a biological tank, a super-magnetic separation system and a mud-water separation system;
a certain amount of ABS microbial agent is added into the septic tank or the collecting tank, a certain aeration amount is controlled after sewage enters the septic tank to carry out primary degradation of the sewage, the sewage is discharged from the septic tank or the collecting tank after being treated for a certain time and enters the regulating tank after being filtered by the grid net, and the sewage is discharged into the biological tank after the pH value of the sewage is regulated in the regulating tank;
a certain amount of ABS microbial agent is added into the biological tank, aeration is started after the biological tank is filled with sewage, a certain aeration amount is controlled to completely degrade the sewage, and the sewage is discharged into the super-magnetic separation system from the biological tank after being treated for a certain time;
the system comprises a super-magnetic separation system and a super-magnetic separation system, wherein the sewage enters a flocculation tank, a special magnetic seed, a special flocculant and a coagulant aid are added into the flocculation tank, the magnetic seed and suspended matters in the sewage form floccules under the action of the special flocculant and the coagulant aid, so that the sewage containing the floccules flows through the super-magnetic separation system, the suspended matters wrapping the magnetic seed are adsorbed by the magnetic separation system, and the separation of water and the suspended matters is finished; the sewage treated by the super-magnetic separation system enters a mud-water separation system to complete mud-water separation and then can be discharged;
the ABS microbial agent comprises ascomycete saprophyticus, basidiomycete, acetobacter malate, bacillus subtilis, bacillus licheniformis, paenibacillus polymyxa, clostridium, bifidobacterium longum, bifidobacterium breve, nitrobacteria, denitrifying bacteria, streptococci and streptomyces.
Further, the adding amount of the ABS microbial agent in the septic tank or the collecting tank is firstly added by 0.5kg/m according to the liquid filling amount of the septic tank3Periodically adding 0.025kg/m each month3。
ABS microbial inoculum is attached to a single biological medium in the septic tank or the collecting tank, the single biological medium is made of natural renewable bamboos, the bamboos are cut into single pieces with the width of 1-3 cm, the front and the back sides of the single pieces are alternately arranged to form a row, the height of the single piece is 210cm, the width of the single piece is 98cm, 7 rows of the single piece are a group, the distance between every two rows of the single piece is 15cm, six thin bamboo rods are fixed on each row of the single piece to form a cuboid, the size of the outer contour of the cuboid is 105cm multiplied by 98cm multiplied by 210cm, and aeration heads are arranged on opposite corners of two ends of each group.
Furthermore, the daytime aeration amount of the septic tank or the collecting tank is controlled to be 45-50L/h per square meter, the night aeration amount is controlled to be 0-20L/h per square meter, and the treatment time of sewage in the septic tank or the collecting tank is 3-5 h.
Furthermore, the grid mesh used for grid mesh treatment has the specifications that the rake tooth grid gap is 1mm, 3mm, 5mm, 10mm, 20mm, 30mm, 40mm or 50mm, and the pH value of the sewage is adjusted to 6.5-7.8 in an adjusting tank.
Further, the adding amount of the ABS microbial agent in the biological pool is firstly added by 0.5kg/m according to the liquid filling amount of the biological pool3Periodically adding 0.025kg/m each month3(ii) a The ABS microbial agent in the biological pool is attached to the fillerThe material is combined with biological medium or nesting doll type biological medium.
The filler combined biological medium comprises a commercially available filler and a biological medium for sewage treatment, the biological medium is made of natural renewable bamboos, bamboo baskets are woven according to the specification of 70cm multiplied by 49cm multiplied by 35cm, the front and back sides of bamboo chips are arranged alternately, rattans are bound to form the bamboo basket biological medium with the specification, every three bamboo baskets form a group of biological medium, the two baskets are buckled with each other, and a bamboo basket filled with a microbial agent and the filler is placed in the middle;
the nesting doll type biological medium is prepared from natural renewable bamboos according to specifications of 70cm multiplied by 49cm multiplied by 35cm, 66cm multiplied by 45cm multiplied by 34cm, 62cm multiplied by 41cm multiplied by 33cm, 58cm multiplied by 37cm multiplied by 32cm, 54cm multiplied by 33cm multiplied by 31cm, 50cm multiplied by 29cm multiplied by 30cm and 46cm multiplied by 25cm multiplied by 29cm, bamboo sheets are arranged alternately on the front and back sides, rattans are bound to form the specification bamboo basket biological medium, seven bamboo baskets from large to small are nested together to form a half group, the two half groups are buckled together to form a group of bamboo basket biological medium, the size of the outline is 70cm multiplied by 49cm multiplied by 70cm, and microbial agents are filled in gaps among the bamboo baskets.
Further, the aeration time of the biological pond is 24 hours of continuous aeration, the continuous aeration rate is 45-50L/h per square meter, and the treatment time of the sewage in the biological pond is 3-5 hours.
Further, the special magnetic seeds are nano ferric oxide, and the particle size of the nano ferric oxide is 13-20 nm; the special flocculant is polyacrylamide, and the coagulant aid is polymeric alumina.
Furthermore, the adding amount of the magnetic seeds is 0.5kg per hundred tons of sewage, the adding amount of the special flocculating agent is 1 kg per hundred tons of sewage, the adding amount of the coagulant aid is 10 kg per hundred tons of sewage, and the time for the ultra-magnetic treatment is 3-6 min.
Furthermore, waste residues generated by the super-magnetic separation system, namely a mixture of magnetic seeds and suspended matters, are stirred and sheared at a high speed to realize the separation of the magnetic seeds and the suspended matters, the separated magnetic seeds are recycled, and the demagnetized suspended matters form sludge which enters a sludge tank to be periodically removed.
Further, the magnetic seed recovery method comprises the following steps: waste residues generated by the super-magnetic separation system enter a high-speed stirring and shearing link through a spiral conveying device, the separation of magnetic seeds and suspended matters is realized through high-speed stirring and shearing, the separated magnetic seeds and non-magnetic suspended matters are separated out through a magnetic separation drum, and the recycling of the magnetic seeds is realized.
The invention has the beneficial effects that:
the integrated treatment process for the sewage in the green hospital effectively combines the ABS microbial agent treatment method with the ultra-magnetic separation water treatment method, is scientific, practical, simple to operate and low in cost, solves the environmental protection problem that the sewage treatment in the hospital does not reach the standard at present, and is suitable for sewage treatment in various large, medium and small hospitals. The sewage treatment method provided by the invention has no chemical agent, does not need to be discharged into a municipal sewage treatment plant for secondary treatment, can completely meet the discharge standard of surface III-class water quality, can recycle the reclaimed water discharged up to the standard, saves water resources, reduces the pressure of municipal sewage treatment, has huge reclaimed water reuse market and considerable benefit.
The ABS microbial agent used in the invention is a comprehensive microbial flora compounded by various fungi, spore bacteria, bacteria and actinomycetes, has biochemical characteristics, and can react in the same tank in an aerobic and anaerobic way to realize multiple fermentation and respiration; the biological activity of the biological sewage treatment agent is strong in vitality, low-temperature resistant, high-temperature resistant and high-oxygen resistant, low-oxygen resistant, strong-acid and strong-alkali resistant, long-time biological activity can be kept, the storage stability can be kept for 2-3 years, and pollutants such as organic matters (COD), fecal colibacillus (MPN), pathogenic bacteria and ammonia nitrogen (TN) in hospital sewage can be efficiently decomposed and treated.
The method for treating the super-magnetic separation water can remove SS, TP, heavy metals, petroleum substances, insoluble COD, BOD and other pollutants, has low operation cost, can recycle the magnetic seeds used by the super-magnetic separation equipment, has the recovery rate of more than 98 percent, reduces the supplement amount of the magnetic powder of the whole treatment system, reduces the pollution of the magnetic powder in the sludge to the environment, and has the characteristics of stability, maturity, short separation time, large treatment capacity and the like.
The integrated treatment process for the sewage of the green hospital is suitable for the sewage with higher organic matter content, has the advantages of strong capability of adapting to hydraulic load change and less sludge generation, does not need to use and add any chemical agent, can eliminate the traditional links of hypochlorous acid or chlorine dioxide, ozone, ultraviolet disinfection and the like, saves the sewage treatment cost, and does not generate the secondary pollution of COD exceeding the standard or the environment.
Drawings
FIG. 1 is a process flow chart of the integrated treatment process of the sewage in the green hospital provided by the invention.
Detailed Description
The technical solutions of the present invention are further described below with reference to the following examples, but the present invention is not limited thereto, and any modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Example 1
A green hospital sewage integrated treatment process comprises the steps that hospital sewage sequentially passes through a septic tank, a grid net, a regulating tank, a biological tank, a super-magnetic separation system and a mud-water separation system;
a certain amount of ABS microbial agent is added into the septic tank or the collecting tank, a certain aeration amount is controlled after sewage enters the septic tank to carry out primary degradation of the sewage, the sewage is discharged from the septic tank or the collecting tank after being treated for a certain time and enters the regulating tank after being filtered by the grid mesh, and the sewage is discharged into the biological tank after the pH value of the sewage is regulated in the regulating tank;
a certain amount of ABS microbial agent is added into the biological tank, aeration is started after the biological tank is filled with sewage, a certain aeration amount is controlled to completely degrade the sewage, and the sewage is discharged into the super-magnetic separation system from the biological tank after being treated for a certain time;
the system comprises a super-magnetic separation system and a super-magnetic separation system, wherein the sewage enters a flocculation tank, a special magnetic seed, a special flocculant and a coagulant aid are added into the flocculation tank, the magnetic seed and suspended matters in the sewage form floccules under the action of the special flocculant and the coagulant aid, so that the sewage containing the floccules flows through the super-magnetic separation system, the suspended matters wrapping the magnetic seed are adsorbed by the magnetic separation system, and the separation of water and the suspended matters is finished; the sewage treated by the super-magnetic separation system enters a mud-water separation system to complete mud-water separation and then can be discharged;
the ABS microbial agent comprises ascomycete saprophyticus, basidiomycete, acetobacter malate, bacillus subtilis, bacillus licheniformis, paenibacillus polymyxa, clostridium, bifidobacterium longum, bifidobacterium breve, nitrobacteria, denitrifying bacteria, streptococci and streptomyces.
Example 2
The embodiment provides an ABS microbial agent, which comprises ascomycete saprophyticus, basidiomycete, acetobacter malate, bacillus subtilis, bacillus licheniformis, paenibacillus polymyxa, clostridium, bifidobacterium longum, bifidobacterium breve, nitrobacteria, denitrifying bacteria, ascomycete and streptomyces.
The strain source and function of each microorganism provided in this example:
the Latin name of ascomycete Saprophytic Ascomycetes is Saprophytic Ascomycetes, purchased from Beijing Baiohobowa Biotech Co., Ltd., product number bio-089576.
The latin name of Aureobasidium pullulans basidiomycetes is Aureobasidium pullulans var. melageninum, purchased from Beijing Baiohobiwei biotechnology, Inc., and the product number is bio-85564.
The saprophytic ascomycetes and aureobasidiomycetes play an important role in an ecosystem and organic substance circulation, and are fungi capable of secreting special chemical components, organic acids or enzymes so as to efficiently decompose animal and plant residues.
The Latin name of HAAP-1 Acetobacter malate is Acetobacter malcum, which is purchased from Beijing Baiohobowa Biotech Co., Ltd, and the product number is bio-103511.
Acetobacter malate is an acidophilic bacterium, has important functions in an ecosystem, can degrade plant residue polymers, participate in iron circulation and carbohydrate metabolism, has a decomposition effect on heavy metals, and has a removal effect on nitrogen and phosphorus.
The latin name of Bacillus subtilis is Bacillus subtilis, 15 strains are purchased from Beijing Baiohobowawei biotechnology limited, and the product numbers are bio-103318, 103217, 103209, 103208, 103192, 103190, 103189, 103188, 103185, 103183, 103182, 103181, 103180, 103177 and 103176 in sequence.
Bacillus licheniformis has a Latin name of Bacillus licheniformis, 5 strains are purchased from Beijing Baiohobowawei biotechnology, and the product numbers are Bio-101680, 101679, 101678, 101673 and 101672 in sequence.
The Latin name of Paenibacillus polymyxa is Paenibacillus polymyxa, 5 strains are purchased from Beijing Baiohobiwei biotechnology, Inc., and the product numbers are bio-101852, 093897, 087219, 096651 and 61098 in sequence.
The latin name of clostridium sp is Bacillus fusiformis, 3 strains in total are purchased from Beijing Baiohobowawei biotechnology limited, and the product numbers are bio-61557, 61554 and 58756 in sequence.
The bacillus subtilis, the bacillus licheniformis, the paenibacillus polymyxa and the clostridium have stronger environment adaptability and organic pollutant decomposition capability, the bacillus has large thallus which is four times larger than that of common pathogenic microorganisms, occupies space advantage, and can inhibit the growth and reproduction of pathogenic microorganisms.
The bacillus subtilis has strong organic matter decomposition capacity, can release high-activity decomposition enzyme while proliferating, decomposes difficultly decomposed macromolecular substances into utilizable micromolecular substances, generates rich metabolic products, synthesizes various organic acids, enzymes, physiological activity and other substances and other easily utilized nutrients. Can decompose organic substances, organic sulfides, organic nitrogen and the like which generate malodorous gases, and greatly improve the environment of a place.
The latin name of Bifidobacterium longum is Bifidobacterium longum, 5 strains are purchased from Beijing Baiohobowawei biotechnology limited, and the product numbers are bio-67291, 67288, 67276, 67263 and 67261 in sequence.
The latin name of the Bifidobacterium breve is Bifidobacterium breve, 4 strains in total are purchased from Beijing Baiohobjwei biotechnology limited, and the product numbers are bio-67242, 67233, 67230 and 67125 in sequence.
Bifidobacterium longum and Bifidobacterium breve are intestinal probiotics and have the ability to inhibit pathogenic microorganisms such as putrefying bacteria and Escherichia coli.
The latin name of the nitrifying bacteria is Nitrobacter sp, which is available from Beijing Baiohobowei Biotechnology Co., Ltd, under the product number bio-75326.
The denitrifying bacteria were obtained from Biotechnology Limited, Baiohobowa, Beijing under the name Achromobacter denitirificans, under the product number bio-103450.
The nitrifying bacteria can utilize oxygen in the nitric acid to oxidize organic substances, the denitrifying bacteria can convert nitrate nitrogen into nitrogen instead of ammonia nitrogen, and the nitrogen and the ammonia nitrogen have strong capacity of removing nitrate pollutants in the sewage.
The Latin name of the Ascomyces lactis is Streptosporangiaceae sp, 8 strains are purchased from Beijing Baiohobowenwei biotechnology limited, and the product numbers are bio-097102, 17510 (Ascomyces rubrum), 17476, 16169, 16167, 00259 (Ascomyces carnosus), 16191 and 16101 in sequence.
The latin name of Streptomyces sp, 15 strains are purchased from Beijing Baiohobowawei biotechnology, and the product numbers are bio-098292, 098291, 096957, 094051, 094049, 84769, 83209, 81969, 79845, 75322, 75307, 75230, 66311, 66306 and 80896.
The streptococci and streptomyces can utilize various carbon sources as nutrient substances, can inhibit the growth and reproduction of pathogenic microorganisms, and decompose various metal elements in sewage.
The preparation method of the ABS microbial agent provided by this embodiment includes the following steps:
step one, preparing a microbial inoculum A, a microbial inoculum B and a microbial inoculum S:
(1) a, bacterial agent:
the preservation strains of the saprophytic ascomycetes, the basidiomycetes and the HAAP-1 acetobacter malate which are listed in the embodiment in the commodity numbers are unfrozen, respectively inoculated into nutrient agar culture media, cultured at the temperature of 30-33 ℃ to rejuvenate the strains, and the thriving colonies are selected to continue to be passaged for 2-3 times to obtain the slant culture of the activated saprophytic ascomycetes, the basidiomycetes and the HAAP-1 acetobacter malate.
The preparation method of the bacterial suspension comprises the following steps: adding 1-2 mL of sterile water into an activated saprophytic ascomycete slant culture to wash down the bacterial lawn to prepare a suspension, inoculating the suspension into a flat culture bottle containing a nutrient agar culture medium by using a sterile straw, uniformly spreading, culturing for 22-24 h at 30-33 ℃, taking a small amount of bacterial lawn for smear, performing blue staining microscopy on the bacterial lawn with saprophytic ascomycete of more than 85%, and washing down the saprophytic ascomycete lawn on the slant in the flat culture bottle by using 10mL of sterile water to prepare the saprophytic ascomycete suspension.
The preparation method of the bacterial suspension of the basidiomycete aureobasidiomycete and the HAAP-1 acetobacter malate is the same as the preparation method of the saprophytic ascomycete bacterial suspension.
The viable count of the prepared saprophytic ascomycete bacterial suspension is 1.2-2.3 multiplied by 108cfu/ml, the viable count of the basidiomycete suspension of the aureobasidium pullulans is 1.0-2.0 multiplied by 108cfu/ml, viable count of HAAP-1 Acetobacter malate bacterial suspension of 1.7-3.0 × 108cfu/ml。
Respectively inoculating the bacterial suspensions of the three bacteria into a culture medium A according to the inoculation amount of 30%, culturing at the temperature of 23-26 ℃ until the viable bacteria density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the three bacteria to obtain a bacterial agent A, wherein the bacterial agent A contains viable bacteria with the number of 4.0-8.0 multiplied by 108cfu/ml, optimum pH6.5~ 8.
The formula of the culture medium A is as follows: 15g of peptone, 20g of agar, 45g of maltose, 10g of corn flour, 10g of bran and 1000ml of water.
(2) B, bacterial agent:
thawing 15 strains of bacillus subtilis, 5 strains of bacillus licheniformis, 5 strains of paenibacillus polymyxa, 3 strains of clostridium, 5 strains of bifidobacterium longum, 4 strains of bifidobacterium breve, 1 strain of nitrifying bacteria and 1 strain of denitrifying bacteria preservation strains with the commodity numbers listed in the embodiment, respectively inoculating the strains into nutrient agar culture media, culturing at the temperature of 30-33 ℃ to rejuvenate the strains, selecting healthy colonies and continuously carrying out passage for 2-3 times to obtain activated slant culture of each strain.
The preparation method of the bacterial suspension comprises the following steps: taking activated 15 strains of bacillus subtilis slant cultures, adding 1-2 mL of sterile water respectively to wash down the lawn to prepare suspensions, inoculating 15 suspensions into 15 flat culture bottles containing nutrient agar culture media respectively by using sterile straws, uniformly spreading, culturing at 30-33 ℃ for 22-24 h, washing down 15 strains of bacillus subtilis on the inner slant surfaces of the 15 flat culture bottles by using 10mL of sterile water to prepare mixed bacterial suspensions of bacillus subtilis.
The preparation method of the bacterial suspensions of the bacillus licheniformis, the paenibacillus polymyxa, the clostridium, the bifidobacterium longum, the bifidobacterium breve, the nitrobacteria and the denitrifying bacteria is the same as the preparation method of the bacterial suspension of the bacillus subtilis, wherein 5 flat culture bottles of the bacillus licheniformis mixed bacterial suspension are respectively used, 5 flat culture bottles of the paenibacillus polymyxa mixed bacterial suspension are respectively used, 3 flat culture bottles of the clostridium polymyxa mixed bacterial suspension are respectively used, 5 flat culture bottles of the bifidobacterium longum mixed bacterial suspension are respectively used, and 4 flat culture bottles of the bifidobacterium breve are respectively used for the bifidobacterium breve mixed bacterial suspension.
The viable count of the prepared bacillus subtilis bacterial suspension is 2.8-3.2 multiplied by 108cfu/ml, viable count of Bacillus licheniformis suspension is 1.0-2.0 × 108cfu/ml, viable count of paenibacillus polymyxa suspension of 1.0-1.5 × 108cfu/ml, viable count of Clostridium bacterial suspension is 1.0-1.2 × 108cfu/ml, viable count of Bifidobacterium longum suspension is 1.0-2.0 × 108cfu/ml, viable count of Bifidobacterium breve bacterial suspension is 1.0-1.5 × 108cfu/ml, viable count of nitrobacteria suspension is 1.0-1.8 multiplied by 108cfu/ml, and the viable count of the denitrifying bacteria suspension is 1.0-1.8 multiplied by 108cfu/ml。
Respectively inoculating the eight bacterial suspensions into a culture medium B according to 50% of the inoculation amount, culturing at 28-30 ℃ until the viable bacteria density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the eight bacteria to obtain a bacterial agent B, wherein the bacterial agent B contains viable bacteria with the number of 9.0-18.0 multiplied by 108cfu/ml, optimum pH6.5~ 8.
The formula of the culture medium B is as follows: 3g of beef extract, 10g of peptone, 15g of agar, 20g of maltose, 10g of corn flour, 5g of sodium chloride and 1000ml of water.
(3) S bacterial agent:
thawing 8 strains of the Streptosporangium and 15 strains of the Streptomyces preservation strains with the commodity numbers listed in the embodiment, respectively inoculating the strains into nutrient agar culture media, culturing at the temperature of 30-33 ℃ to rejuvenate the strains, selecting the robust colonies, and continuously carrying out passage for 2-3 times to obtain the activated slant culture of 8 strains of the Streptomycetum and 15 strains of the Streptomyces.
The preparation method of the bacterial suspension comprises the following steps: and taking each activated 8 streptosporangium slant cultures, adding 1-2 mL of sterile water respectively to wash down the bacterial lawn to prepare suspension, inoculating 8 suspensions into 8 flat culture bottles containing nutrient agar culture media respectively by using a sterile straw, uniformly spreading, culturing at 30-33 ℃ for 22-24 h, washing down the 8 streptosporangium bacterial lawns on the slant surfaces in the 8 flat culture bottles by using 10mL of sterile water to prepare mixed bacterial suspension of the streptosporangium.
The preparation method of the streptosporangium suspension is the same as that of the streptosporangium suspension, and 15 streptomycete flat culture bottles are respectively used for the mixed streptosporangium suspension.
The viable count of the prepared streptospora sporophore bacterial suspension is 1.0-2.0 multiplied by 108cfu/ml, viable count of Streptomyces bacterial suspension is 2.0-3.0 × 108cfu/ml。
Respectively inoculating the two bacterial suspensions into a culture medium S according to the inoculation amount of 30%, culturing the viable bacteria at the temperature of 25-36 ℃ until the density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the two bacteria to obtain an S microbial inoculum, wherein the S microbial inoculum contains viable bacteria with the number of 3.0-5.0 multiplied by 108cfu/ml, optimum pH6.5~ 8.
The formula of the culture medium S is as follows: 4g of soluble starch, 0.2g of potassium nitrate, 0.1g of dipotassium hydrogen phosphate, 0.1g of sodium chloride, 0.1g of magnesium sulfate, 0.002g of ferrous sulfate, 4g of agar and 1000ml of water.
Step two, preparing the ABS microbial agent:
mixing the microbial inoculum A, the microbial inoculum B and the microbial inoculum S obtained in the step one according to a volume ratio of 13:70:17, inoculating 30% of the inoculum size into a semisynthetic medium, fermenting for 24 hours at a temperature of 32 ℃ under the condition that the ventilation volume is 1.2vvm, volatilizing to remove moisture in the fermentation liquid, and obtaining the ABSThe microbial agent of ABS contains 18.0-35.0 × 10 viable bacteria8cfu/ml, optimum pH6.5~ 8.
The formula of the semisynthetic culture medium comprises: 5g of beef extract, 15g of potato, 10g of maltose, 0.1g of magnesium sulfate, 0.1g of potassium nitrate and 1000ml of water.
The ABS microbial inoculum provided by this embodiment has the following advantages as the third generation microbial inoculum:
almost zero sludge sewage treatment technology, 200 g of sludge per hundred tons of aquatic products can overcome the pain of sludge discharge in the sewage treatment process; the method has the advantages that pollutants such as BOD, COD, SS, ammonia nitrogen, phosphorus and the like can be removed in an ultra-strong manner, and the effective rate is over 95-97%; the water outlet of the water production tank can completely meet the discharge standard of surface III water quality; the waste water with dye, dyeing and finishing and other waste water with color difficult to eliminate can be directly decolored by throwing; has obvious deodorizing effect and eliminates NH3、P、H2S and organic acid have super-strong capability; the super-strong breeding and adaptability can deal with the complex sewage environment in the future; degrading synthetic chemical pollutants such as pesticides, polychlorinated biphenyl, plasticizers, synthetic detergents, biosynthetic plastics and the like; inhibiting viruses, germs and parasites. Inhibiting algae propagation and purifying water body and water color; removing heavy metal pollution such as zinc, manganese, iron, chromium and the like in domestic sewage.
The principle of the ABS microbial inoculum treatment sewage that this embodiment provided lies in:
aerobic microbe sewage treating strain utilizes Dissolved Oxygen (DO) in water to decompose organic pollutant into water and carbon dioxide or convert organic pollutant into nutrient substance of sewage treating microbe, and breeds by utilizing the nutrient substance, and the process can degrade pollutant to achieve the aim of removing dirt and odor, and the treatment method is called aerobic treatment.
The general anaerobic microorganism sewage treatment method is widely applied to the treatment of the waste water containing nitrogen, and nitrate is reduced in the environment without dissolved oxygen, namely, the oxygen in the nitrate is utilized to carry out denitrification reaction so as to generate the nitrogen. Acid-producing bacteria, commonly used anaerobic microorganisms, are commonly used in the early stage acidification reaction in absolute anaerobic microbial sewage treatment processes.
The absolute anaerobic biological treatment is to utilize acid-producing bacteria to perform acidification reaction to decompose saccharide or protein in sewage into monosaccharide, amino acid or lower fatty acid, and organic acid. Then, monosaccharide, amino acid or organic acid in the sewage are decomposed into acetic acid by using absolute anaerobic microorganism-acetic acid generating bacteria. Finally, the acetic acid is decomposed by absolute anaerobic microorganism-methane generating bacteria to generate methane.
Most of the microorganisms for sewage treatment feed on pollutants, such as carbohydrates, proteins, fats and other pollutants, which can be decomposed by various microorganisms for sewage treatment, so that the microorganisms become nutrients for growth and propagation of the microorganisms. The bacillus can convert the malodorous gas hydrogen sulfide into sulfur element required by the growth of the bacillus, thereby achieving the aim of deodorization.
The polysaccharide viscous substance of the microbial sewage treatment strain can be utilized to adsorb pollutants in the environment, and the characteristic is often applied to the adsorption of heavy metal ions.
When the flora enters the sewage after the special microorganism sewage treatment, the flora can become dominant bacteria in the environment and can inhibit the growth of pathogenic bacteria and putrefying bacteria, for example, after lactobacillus and the like become dominant bacteria, the growth of escherichia coli and the like in the environment can be inhibited, so that the generation of odor such as ammonia gas and the like is reduced, and the environment of a place is greatly improved.
Example 3
This example provides a method for activating the ABS microbial inoculum prepared in example 2 in a septic tank or collection tank or biological tank:
uniformly throwing the ABS microbial agent which is thrown for the first time into a septic tank or a collecting tank or a biological tank at one time, adopting staged water adjustment to reduce the impact on the microorganisms, opening 1/3 with normal water inflow on the first day, opening 2/3 on the second day, fully opening on the third day, then closing the water inlet and the water outlet, keeping an aeration state for 120 hours, activating the microorganisms and attaching the microorganisms to a biological medium and/or a filler for proliferation, and detecting COD (chemical oxygen demand) 120 and Escherichia coli 1100 in water, wherein the aeration amount is 45-50L/h per square meter and the aeration time is 24 hours. And (4) monitoring and adjusting the system operation, and if the system is stable after about 8 days, adding ABS (acrylonitrile butadiene styrene) bactericide is not needed, and activating is completed.
Example 4
This example provides a method for the primary degradation of sewage in a septic tank or collection tank using the ABS microbial inoculum prepared in example 2:
step one, preparing and placing a single biological medium for attaching a microbial agent:
the method comprises the steps of taking natural renewable bamboos as a single biological medium, cutting the bamboos into single pieces with the width of 1-3 cm, arranging the front and the back of the bamboos alternately to form a row, arranging the bamboo pieces with the height of 210cm and the width of 98cm, arranging 7 rows of the bamboo pieces in a group, fixing six thin bamboo rods on each row to form a cuboid, arranging the bamboo pieces with the overall dimension of 105cm multiplied by 98cm multiplied by 210cm, installing aeration heads on opposite corners of each group, and adjusting the height of each group of biological media according to the liquid level of sewage.
The placing quantity of the single biological medium in the septic tank or the collecting tank is determined by the volume of the septic tank or the collecting tank, and the normal placing mode is to fill the bottom of the septic tank or the collecting tank.
Step two, adding and activating an ABS microbial agent:
the ABS microbial agent prepared in the embodiment 2 is added into a septic tank or a collecting tank, and the adding amount is 0.5kg/m according to the liquid filling amount of the septic tank for the first time3Periodically adding 0.025kg/m each month3The ABS inoculum was activated as provided in example 3.
Step three, primarily degrading pollutants in the sewage:
controlling the aeration rate of 45-50L/h per square meter in the daytime and the aeration rate of 0-20L/h per square meter at night after the sewage enters the septic tank, and if the aeration is stopped at night, stopping the aeration for 2-3 h. When the water consumption is large in the daytime, sewage enters a septic tank or a collecting tank in a continuous water inlet mode, and the treatment time is 3-5 hours; when the water consumption is small at night, the sewage can stay in the septic tank or the collecting tank for 10 hours. The microbial agent performs primary degradation on pollutants in the sewage at the stage, including removing peculiar smell and primarily degrading NH in the sewage3 N, TN and animal and vegetable oil, and discharging the sewage out of the septic tank after the treatment is finished.
Example 5
This example provides a method for completely degrading the sewage with the ABS microbial agent prepared in example 2 in a biological tank:
step one, preparing and placing a filler combined biological medium or nesting doll type biological medium for attaching a microbial agent:
the filler combined biological medium comprises a commercially available filler and a biological medium for sewage treatment, wherein the biological medium is prepared from natural renewable bamboos, the bamboo baskets are woven according to the specification of 70cm multiplied by 49cm multiplied by 35cm, the front and back sides of bamboo chips are arranged alternately, rattans are bound to form the bamboo basket biological medium with the specification, every three bamboo baskets form a group of biological medium, the two baskets are buckled with each other, and the bamboo basket filled with a microbial agent and the filler is placed in the middle.
The nesting doll type biological medium is prepared by taking natural reproducible bamboos as raw materials, weaving bamboo baskets according to the specification of 70cm multiplied by 49cm multiplied by 35cm, 66cm multiplied by 45cm multiplied by 34cm, 62cm multiplied by 41cm multiplied by 33cm, 58cm multiplied by 37cm multiplied by 32cm, 54cm multiplied by 33cm multiplied by 31cm, 50cm multiplied by 29cm multiplied by 30cm and 46cm multiplied by 25cm multiplied by 29cm, arranging bamboo chips in a way of alternating front and back sides, binding rattans to form the specification bamboo basket biological medium, nesting seven bamboo baskets from big to small into half groups, buckling the two half groups together to form a group of bamboo basket biological medium, wherein the external dimension is 70cm multiplied by 49cm multiplied by 70cm, and filling microbial inoculum in gaps among the bamboo baskets.
The placing quantity of the filler combined biological medium or nesting child type biological medium is determined by the volume of the biological pond, and the normal placing mode is that the bottom of the biological pond is fully paved.
Step two, adding and activating an ABS microbial agent:
the ABS microbial agent prepared in the example 2 is added into a biological pool, and the adding amount is 0.5kg/m for the first time according to the liquid loading amount of the biological pool3Periodically adding 0.025kg/m each month3The ABS inoculum was activated as provided in example 3.
Step three, water inlet:
example 4 sewage treated by a septic tank or a collection tank is filtered by a grid net with rake teeth having grid gaps of 1mm, 3mm, 5mm, 10mm, 20mm, 30mm, 40mm or 50mm, and then enters an adjusting tank, the pH value of the sewage is adjusted to 6.5-7.8 in the adjusting tank, and then the sewage is discharged into a biological tank;
step four, completely degrading pollutants in the sewage:
the aeration time of the biological tank is 24 hours of continuous aeration, the continuous aeration amount is 45-50L/h per square meter, and the treatment time of the sewage in the biological tank is 3-5 hours.
The method provided by the embodiment discharges the sewage into the biological tank by adopting a continuous water inlet mode, and the biological tank plays a role in balancing the quality and the quantity of the sewage to a certain extent in a water inlet stage. The ABS microbial agent has certain adaptability to the fluctuation of water quality and water quantity.
The method provided by the embodiment adopts 24-hour uninterrupted aeration, aerobic and anaerobic reactions are simultaneously carried out in the aeration environment, and organic matters are already oxidized and degraded greatly in the water inlet process.
The method provided by the embodiment can adjust the aeration mode and the water inlet speed according to the growth characteristics of the ABS microbial agent and the decomposition treatment target of organic matters and inorganic matters in the sewage during operation, and can completely degrade various complex pollution components and stubborn sewage in the sewage under the condition that the microbial agent in the biological pond is not changed by controlling the environment of the water inlet stage.
Pollutants are removed in the biological pool through the degradation of ABS microbial flora, including Escherichia coli, pathogenic microorganisms, BOD, COD, TN and PN. The treatment time of the complete degradation stage is determined according to the water quality of raw water and the specific situation of a discharge standard, and is generally 3-5 h.
The anaerobic and aerobic identical tank is the characteristic of ABS microbial agent, and the realization of different functions of anaerobic bacteria and aerobic bacteria is determined by aeration quantity. According to sewage of different industries, a continuous aeration mode, an intermittent aeration mode and a peak-valley aeration mode are selected, wherein the intermittent aeration rate is 60% of the continuous aeration rate, and the peak-valley aeration rate is 60-90% of the continuous aeration rate.
The continuous aeration mode is mainly used for biological tanks, distances are reserved among aeration heads, aerobic bacteria can propagate around a place with much oxygen, anaerobic bacteria can stay at a place with thin oxygen to decompose harmful substances, and the ABS microbial flora is characterized in that a proper place can be searched for propagation.
The intermittent aeration mode is mainly used for septic tanks or collecting ponds, the large water inflow in daytime is up to 50L/hour per square meter, and the small water inflow at night is up to 0-20 Lh per square meter.
The peak valley type aeration mode is mainly used for an improved biological tank for urban sewage treatment, namely, an anaerobic tank and an aerobic tank are combined, wherein the aeration rate is 45L/h per square meter in the daytime and 20L/h per square meter at night, and if the water level reaches 2-4 meters, the aeration rate is doubled.
The ABS microbial agent contains 70% of bacillus, is quick in metabolism and reproduction, can be multiplied by 10 times in four hours, and can be multiplied by 6 times in four hours by standard bacteria. The volume is four times larger than that of common pathogenic bacteria, the ABS microbial agent occupies space dominance, and inhibits the growth and reproduction of harmful bacteria, and the anaerobic or anaerobic and aerobic state alternation of the water inlet stage and the reaction stage of the method for treating sewage by the ABS microbial agent can inhibit the excessive reproduction of obligate aerobic filamentous bacteria and control the expansion.
An important advantage of the method for treating sewage by using ABS microbial agent is that the selectivity of ABS microbial agent can be maintained by operators through controlling relevant conditions. Within a complete treatment cycle, the ABS microbial inoculant selection pressures vary greatly, including the availability of oxygen and substrate. Although some of these selective pressures may also occur in some conventional continuous systems, the method of treating wastewater with ABS microbial agents has a very good selectivity and expandability, allowing the growth of microorganisms in a superior environment.
The nitrogen in the sewage enters the system in the form of organic ammonia and ammonia nitrogen and is removed from the system in the form of nitrogen. The process of converting ammonia nitrogen into nitrogen is divided into nitrification and denitrification processes. The nitrification process is carried out under the condition of sufficient dissolved oxygen, and the denitrification process is carried out under the condition of oxygen deficiency. In order to remove nitrogen in sewage, the operation of the treatment plant is simply regulated, and the period and the aeration time are regulated without greatly modifying the structure of the treatment plant.
Biological phosphorus removal firstly requires an anaerobic period, no dissolved oxygen and nitrogen in an oxidation state exist, and meanwhile, easily degradable organic matters exist, so that in an aerobic stage, namely high dissolved oxygen concentration, sludge is promoted to absorb excessive phosphorus. A certain amount of excess sludge is removed from the reaction tank before the next anaerobic phase begins. The flexibility of the method of treating sewage with ABS microbial agents is represented by the fact that these conditions can be met by changing the mode of operation. The operation procedure for accomplishing phosphorus removal in an ABS system is as follows: water inlet, aeration, sedimentation, sludge discharge and water discharge.
Example 6
The embodiment provides a specific method for carrying out the super-magnetic separation water treatment on the sewage treated by the biological tank, which comprises the following steps:
the sewage treated by the biological tank enters the ultra-magnetic separation system, the ultra-magnetic separation system comprises a flocculation tank, a chemical preparation and addition device and an ultra-magnetic separator, the sewage enters the flocculation tank, a special magnetic seed, namely nano ferric oxide with the particle size of 13-20 nm, a special flocculating agent polyacrylamide and coagulant aid polymeric alumina are added into the flocculation tank by the chemical preparation and addition device, the addition amount of the magnetic seed is 0.5 kilogram per hundred tons of sewage, the addition amount of the special flocculating agent is 1 kilogram per hundred tons of sewage, and the addition amount of the coagulant aid is 10 kilograms per hundred tons of sewage.
The sewage and the added substances are uniformly mixed by a mechanical stirring mode. The magnetic seeds form floccules with suspended matters in the sewage under the action of special flocculating agent polyacrylamide and coagulant aid polymeric alumina, the sewage containing the floccules flows through the supermagnetic separator, the suspended matters wrapping the magnetic seeds are adsorbed by the magnetic separator, the separation of water and the suspended matters is completed, the suspended matters in the water can be removed in about 3 minutes by the magnetic separation water treatment technology, the SS removal rate is more than or equal to 95 percent, the algae removal rate is more than or equal to 95 percent, the TP removal rate is more than or equal to 90 percent, the COD removal rate is more than or equal to 60 percent, and the BOD removal rate is more than or equal to 60 percent. The time of the super magnetic treatment is 3-6 minutes.
The rare earth neodymium iron boron permanent magnet steel adopted by the core equipment of the super-magnetic separation water treatment method provided by the embodiment has stable magnetic field intensity, provides guarantee for production, manufacture and application of equipment, and has stable and mature technology. The self-flowing continuous water inlet of the super magnetic separation process. The gravity settling hydraulic retention time of the traditional process is not needed. The magnetic separation technology adopts rare earth magnetic steel, the magnetic force generated on the surface of the rare earth magnetic steel is more than 1200 times of the gravity, the micro magnetic floccules can be captured quickly, and the mud-water separation process only needs 3-5 seconds. The water inlet and outlet treatment process only needs 3-5 minutes. The device occupies less land, has large processing capacity, realizes the integrated and continuous processing function, and has high processing efficiency in unit time and large processing capacity. The floor space of the equipment is small. Compared with the traditional treatment method, the method saves more than 60 percent of occupied land. The operation cost is low, the super-magnetic separation is carried out by strong magnetic force, large floccules do not need to be formed, the use amount of the medicament can be saved, and the medicament is only 1/3-1/2 of the conventional water treatment medicament adding amount; the installed power is low, the energy consumption is low, and the electric charge is saved; the operation and maintenance are simple, and the labor cost is saved. The system has small installed capacity, low power consumption, high automation degree, quick operation and start and simple maintenance.
The method for treating the super-magnetic separation water has the advantages that efficient flocculation reaction is achieved, high-density uniform micro floccules are quickly formed, optimized flocculation reaction with magnetic cores is formed, and the practical dosage of the medicament is saved compared with that of a common process. The water content of the sludge continuously discharged by the equipment is less than or equal to 93 percent, and the sludge can directly enter a sludge dewatering machine for treatment.
The embodiment uses the super-magnetic separation to treat sewage, has no chemical agent, does not need to discharge the treated water into a municipal sewage treatment plant for secondary treatment, can completely achieve the III-class water quality discharge standard on the earth surface, can recycle the reclaimed water discharged up to the standard, and serves as the miscellaneous water which is not in direct contact with the human body, such as ground cleaning, flower watering, car washing, air-conditioning cooling, toilet flushing, fire fighting and the like.
In the embodiment, the quality of the effluent water treated by ABS microbial agent and ultra-magnetic separation meets the standard of reclaimed water reuse, and meets the following conditions:
1. the sanitary requirement is met. The indexes include coliform bacteria number (below 500/L), residual chlorine amount (0), suspended matter, COD (less than 20mg/L), and BOD5 (less than 4mg/L), phosphide (less than 0.2mg/L), and the like;
2. meets the sensory requirement of people, namely no feeling of quickness. The measuring indexes mainly comprise turbidity SS (less than 3mg/L), transparent chroma, no odor and the like;
3. meets the requirements of equipment construction, namely the water quality is not easy to cause serious corrosion and scaling of equipment and pipelines. The measurement indices are pH, hardness, evaporation residue, soluble substances, etc.
The principle of the super-magnetic separation water treatment method is as follows:
the main objects of sewage treatment are suspended matters in sewage and pollutants such as COD, BOD, total phosphorus and the like, and the suspended matters are not magnetic, so that the non-magnetic suspended matters must be converted into magnetic suspended matters to treat the sewage by using magnetic separation and purification equipment. The magnetic separation technology is to add special magnetic seeds into raw water to form flocs with suspended matters in the raw water under the action of coagulant aid. The formed floc is a mixture of magnetic seeds and suspended matters with the magnetic seeds as 'nuclei', and because the magnetic seeds have magnetism, when the floc passes through the magnetic separator along water flow, the magnetic seeds with the magnetism can be captured and adsorbed by rare earth neodymium iron boron permanent magnetic materials in the magnetic separator through a magnetic field formed by the magnetic disc group, so that the magnetic seeds as the nuclei are adsorbed together with the suspended matters, the separation of water and the suspended matters is realized, and the aim of purifying sewage is fulfilled.
1. Induced magnetic force
The induced magnetic force is calculated according to the formula 3-1:
Fmagnetism＝μ0·χ·HgradH 3-1
Wherein:
Fmagnetic field-magnetic force, N/kg ═ m/s2 ；
μ0 Permeability, mu, of vacuum0 ＝4π×10-7wb/m.A；
x- -specific susceptibility of the suspension (or body mass susceptibility), m3/kg；
H-external magnetic field strength, A/m;
HgradH-magnetic force, A2/m3。
Firstly, the separated material is required to be a magnetic conductive material, the non-magnetic conductive material is modified into a magnetic conductive floccule by a micro-magnetic agglomeration technology, the specific susceptibility of the floccule is one of the determining factors of the magnitude of the induced magnetic force, and the magnitude of the external magnetic field intensity and the magnetic field gradient are also the determining factors of the magnitude of the induced magnetic force.
2. Principle of magnetic separation
Induced magnetic force (electromagnetic field or permanent magnetic field) salvages and separates out the magnetic floccule in the sewage, reaches the purpose of water purification and suspended solid recovery, must satisfy formula 3-2:
Fmagnetic field＞∑FMachine for working＝g0+FViscous repulsive force+Fv (Power) 3-2
Wherein:
Fmagnetic field-a magnetic force acting on the magnetic floe suspension;
∑Fmachine for workingThe resultant of all mechanical forces in opposition to the direction of the magnetic force.
∑FMachine for workingIncluding the gravitational component in the aqueous medium, the viscous drag of the aqueous medium on the particles as they move in the direction of the magnetic force fmagnetic, and the acceleration drag of the directional movement of the particles.
In a large-flow and low-concentration water body, the magnetic floccules flow along with the fluid and are acted by magnetic force and mechanical force in a magnetic field, and only the requirement of F is metMagnetic field≥∑FMachine for workingThe magnetic floc suspension can be adsorbed and separated under the action of a magnetic field.
The magnetic force attracted by the magnetic floccules is large enough, 1200 times of the gravity and far larger than other counter forces, and the magnetic floccules are separated from the water body very quickly.
3. Efficiency parameter
The magnetic separation and purification technology is characterized by performance parameters. The law of effectiveness of magnetic separation is calculated according to equation 3-3:
wherein:
n-efficiency parameter;
delta-particle density;
μ — viscosity of water;
Sgeneral assembly-total effective area of magnetic interaction;
q-process flow;
d-particle diameter.
The magnetic force is larger, the efficiency of the magnetic separation equipment is higher, and the correlation degree is in a first-order proportional relationship. The larger the effective area of the magnetic force is, the higher the efficiency of the magnetic separation equipment is, and the degree of correlation is a first-order proportional relation.
The present embodiment uses a supermagnetic separation apparatus including:
a supermagnetic separator: the supermagnetic separator utilizes the high-intensity magnetic energy product of rare earth neodymium iron boron permanent magnetic materials, and innovations are made on the design of a magnetic circuit through the magnetism gathering combination of rare earth magnetic disks, so that high magnetic field intensity and high magnetic field gradient of a working space are realized, ferromagnetic substance particles-magnetic seeds and nonmagnetic substance particles flocculated and adsorbed on the ferromagnetic substance particles in sewage are overcome under the action of magnetic field force, quick directional motion is generated and adsorbed on the surfaces of the rare earth magnetic disks, suspended matters in the sewage are separated out, adsorbed substances on the surfaces of the rare earth magnetic disks are unloaded through a magnetism isolating and slag unloading device, a spiral groove is planed, and the waste water is purified and recycled through the output of a nonmagnetic slag conveying device.
The type of the magnetic separator used in the embodiment is an HRMD-100A type precise magnetic separator.
A medicament preparation and adding device: the medicament preparation and addition device integrates preparation and addition of medicaments, is matched with the separator for use, and is used for realizing the metering and addition of PAC and PAM medicaments. The PAC preparation and addition device consists of two parts of stirring and addition, wherein the stirring part is responsible for the preparation of the medicament; the metering unit quantitatively feeds the liquid medicine from the liquid storage tank to the coagulation system through a metering pump. The dry powder dose is designed to be replenished every 8 hours. PAM adopts a continuous preparation and feeding device, and can realize automatic feeding of dry powder and continuous preparation.
The medicament preparation feeding device used in this embodiment is a PAM feeding device: JY 500.
Example 7
The embodiment provides a recovery method of magnetic seeds used in the treatment of super-magnetic separation water, which comprises the following steps:
the ultra-magnetic separation system that this embodiment provided still includes screw conveyer on embodiment 6 basis, high-speed stirring shearing mechanism and magnetic separation drum, the waste residue that separates out after the ultra-magnetic separation system of embodiment 6 handles, the mixture of magnetic seed and suspended solid promptly, through screw conveyer entering high-speed stirring shearing link, realize the separation of magnetic seed and suspended solid through the high-speed stirring shearing, magnetic seed and non-magnetic suspended solid after the separation again through drum recovery unit-magnetic separation drum, sort out the magnetic seed wherein, realize the recovery cyclic utilization of magnetic seed, suspended solid after the demagnetization forms mud and gets into sludge impoundment and clears away regularly.
In the magnetic separation technology, magnetic seeds are added to make the flocculate formed by coagulation have magnetism. Because the process of adding the magnetic seeds is continuous, the added magnetic seeds also become a part of the operating cost. In order to save resources and reduce the running cost of water treatment, a magnetic seed recovery technology is developed at the same time. The magnetic seeds put into the sewage can be recycled, and a large number of tests prove that the recovery rate is more than 98 percent, and the operation cost generated by the recovery rate can be basically ignored.
Magnetic separation magnetic drum: the magnetic separation magnetic drum is used for recovering the magnetic seeds added into the sewage to realize reutilization. The slag separated by the super-magnetic separator is floccules formed by magnetic seeds and suspended matters, the floccules are scattered and then separated by a magnetic separation magnetic drum, so that the magnetic seeds and nonmagnetic substances are separated, and the recovered magnetic seeds enter the original system again to be added as the magnetic seeds. The separated non-magnetic substance enters a sludge treatment system, and can be directly dewatered without concentration due to high solid content. The equipment has stable operation and strong recovery capability.
In this embodiment, the specific type of the magnetic separation drum used is MDI-3 type magnetic seed recovery machine.
Example 8
The embodiment provides a mud-water separation method after the completion of the super-magnetic separation water treatment, which comprises the following steps:
the sewage discharged by the super-magnetic separation system enters a mud-water separation system, and the mud-water separation system is a pressure floating suction tank and consists of a pressure floating suction tank body, a pressure pipeline and a filter plate. Sewage enters the pressure float suction tank, and under 1.5 atmospheric pressures, the sewage passes through the filter plate, so that impurities, suspended matters and mucilage are effectively removed, and the purpose of mud-water separation is achieved.
Example 9
The integrated treatment process of the green hospital sewage, the simple ABS microbial agent treatment method and the traditional microbial agent SBR technology provided by the embodiments 2-8 are respectively used for treating the sewage generated by a certain Beijing hospital, wherein the traditional microbial agent contains bacillus, saccharomyces and micrococcus, and the treatment results are shown in a table 1;
TABLE 1
As can be seen from the data in the table 1, the integrated treatment process for the sewage of the green hospital can effectively remove pollutants such as COD, SS, BOD, Escherichia coli, pathogenic bacteria, total nitrogen, total phosphorus and the like in the sewage of the hospital, the removal effect is obviously superior to that of the traditional microbial agent, and especially the removal effect on the Escherichia coli and the pathogenic bacteria in the sewage is obvious. The treated produced water can be directly discharged, the reclaimed water is recycled to serve the society, and the treated produced water is not required to be discharged into an urban sewage treatment plant for secondary treatment, so that the pressure of urban sewage treatment is reduced.
Claims (7)
1. An integrated treatment process for hospital sewage is characterized in that the hospital sewage sequentially passes through a septic tank, a grid net, a regulating tank, a biological tank, a super-magnetic separation system and a mud-water separation system;
the adding amount of the ABS microbial agent in the septic tank is 0.5kg/m according to the liquid loading amount of the septic tank for the first time3Periodically adding 0.025kg/m each month3Controlling aeration quantity to carry out primary degradation on sewage after the sewage enters a septic tank, controlling the aeration quantity of the septic tank to be 45-50L/h per square meter in the daytime, controlling the aeration quantity to be 0-20L/h per square meter at night, controlling the treatment time of the sewage in the septic tank to be 3-5 h, discharging the sewage from the septic tank, filtering the sewage by using the grid net, then feeding the sewage into the regulating tank, and discharging the sewage into the biological tank after the pH value of the sewage is regulated in the regulating tank;
the dosage of the ABS microbial agent in the biological pool is firstly 0.5kg/m according to the liquid loading amount of the biological pool3Regularly supplement each monthAdding 0.025kg/m3When the biological tank is filled with sewage, aeration is started, aeration amount is controlled to carry out complete degradation of the sewage, the aeration time of the biological tank is 24 hours for continuous aeration, the continuous aeration amount is 45-50L/h per square meter, and the treatment time of the sewage in the biological tank is 3-5 hours; after a certain time of treatment, discharging the sewage from the biological tank into the super-magnetic separation system;
the system comprises a super-magnetic separation system and a super-magnetic separation system, wherein the sewage enters a flocculation tank, a special magnetic seed, a special flocculating agent and a coagulant aid are added into the flocculation tank, the special magnetic seed and suspended matters in the sewage form flocs under the action of the special flocculating agent and the coagulant aid, so that the sewage containing the flocs flows through the super-magnetic separation system, and the suspended matters wrapping the special magnetic seed are adsorbed by the super-magnetic separation system to complete the separation of water and the suspended matters; the sewage treated by the super-magnetic separation system enters a mud-water separation system to complete mud-water separation and then can be discharged; the special magnetic seeds are nano ferric oxide, and the particle size of the special magnetic seeds is 13-20 nm; the special flocculant is polyacrylamide, and the coagulant aid is polymeric alumina;
the ABS microbial agent comprises ascomycete saprophyticus, basidiomycete, HAAP-1 acetobacter malate, bacillus subtilis, bacillus licheniformis, paenibacillus polymyxa, clostridium, bifidobacterium longum, bifidobacterium breve, nitrobacteria, denitrifying bacteria, ascomycete and streptomyces;
the preparation method of the ABS microbial agent comprises the following steps:
step one, preparing a microbial inoculum A, a microbial inoculum B and a microbial inoculum S:
a, bacterial agent: the viable count of the prepared saprophytic ascomycete suspension is 1.2-2.3 multiplied by 108cfu/mL, the viable count of the basidiomycete suspension of the aureobasidium pullulans is 1.0-2.0 multiplied by 108The viable count of cfu/mL and HAAP-1 Acetobacter malate bacterial suspension is 1.7-3.0 × 108cfu/mL；
Respectively inoculating the bacterial suspensions of the three bacteria into a culture medium A according to the inoculation amount of 30%, culturing at the temperature of 23-26 ℃ until the viable bacteria density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the three bacteria to obtain a bacterial agent A, wherein the bacterial agent A contains viable bacteria with the number of 4.0-8.0 multiplied by 108cfu/mL, the optimum pH6.5-8;
b, bacterial agent: the viable count of the prepared bacillus subtilis bacterial suspension is 2.8-3.2 multiplied by 108cfu/mL, the viable count of the suspension of the Bacillus licheniformis is 1.0-2.0 multiplied by 108cfu/mL, the viable count of the paenibacillus polymyxa suspension is 1.0-1.5 multiplied by 108cfu/mL, viable count of Clostridium bacterial suspension is 1.0-1.2 × 108cfu/mL, the viable count of the Bifidobacterium longum suspension is 1.0-2.0 multiplied by 108cfu/mL, the viable count of the Bifidobacterium breve bacterial suspension is 1.0-1.5 multiplied by 108cfu/mL, viable count of nitrobacteria suspension is 1.0-1.8 x 108cfu/mL, and the viable count of the denitrifying bacteria suspension is 1.0-1.8 multiplied by 108cfu/mL；
Respectively inoculating the eight bacterial suspensions into a culture medium B according to 50% of the inoculation amount, culturing at 28-30 ℃ until the viable bacteria density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the eight bacteria to obtain a bacterial agent B, wherein the bacterial agent B contains viable bacteria with the number of 9.0-18.0 multiplied by 108cfu/mL, the optimum pH6.5-8;
s bacterial agent: the viable count of the prepared streptospora sporophore bacterial suspension is 1.0-2.0 multiplied by 108cfu/mL, viable count of Streptomyces bacterial suspension is 2.0-3.0 × 108cfu/mL；
Respectively inoculating the two bacterial suspensions into a culture medium S according to the inoculation amount of 30%, culturing the viable bacteria at the temperature of 25-36 ℃ until the density OD600 reaches 0.6-0.8, and mixing the bacterial suspensions of the two bacteria to obtain an S microbial inoculum, wherein the S microbial inoculum contains viable bacteria with the number of 3.0-5.0 multiplied by 108cfu/mL, the optimum pH6.5-8;
step two, preparing the ABS microbial agent:
mixing the microbial inoculum A, the microbial inoculum B and the microbial inoculum S obtained in the step one according to a volume ratio of 13:70:17, inoculating 30% of the microbial inoculum into a semisynthetic culture medium, fermenting for 24 hours at a temperature of 32 ℃ under the condition that the ventilation volume is 1.2vvm, volatilizing to remove moisture in fermentation liquor to obtain the ABS microbial inoculum, wherein the ABS microbial inoculum contains 18.0-35.0 × 10 viable count8cfu/mL, optimum pH6.5~ 8.
2. The integrated hospital sewage treatment process according to claim 1,
ABS microbial inoculum is attached to a single biological medium in the septic tank, the single biological medium is made of natural renewable bamboos, the bamboos are cut into single pieces with the width of 1-3 cm, the front and the back sides of the single pieces are alternately arranged to form a row, the height of the single piece is 210cm, the width of the single piece is 98cm, 7 rows of the single piece are a group, the distance between every two rows of the single piece is 15cm, six thin bamboo rods are fixed on each row to form a cuboid, the size of the outer contour of the cuboid is 105cm multiplied by 98cm multiplied by 210cm, and aeration heads are arranged at opposite corners of two ends of each group.
3. The integrated hospital sewage treatment process according to claim 2, wherein the pH value of the sewage is adjusted to 6.5-7.8 in the adjusting tank.
4. The integrated hospital sewage treatment process according to claim 3,
the ABS microbial agent in the biological pool is attached to a filler combined biological medium or a nesting doll type biological medium,
the filler combined biological medium comprises a commercially available filler and a biological medium for sewage treatment, the biological medium is made of natural renewable bamboos, bamboo baskets are woven according to the specification of 70cm multiplied by 49cm multiplied by 35cm, the front and back sides of bamboo chips are arranged alternately, rattans are bound to form the bamboo basket biological medium with the specification, every three bamboo baskets form a group of biological medium, the two baskets are buckled with each other, and a bamboo basket filled with a microbial agent and the filler is placed in the middle;
the nesting doll type biological medium is prepared from natural renewable bamboos according to specifications of 70cm multiplied by 49cm multiplied by 35cm, 66cm multiplied by 45cm multiplied by 34cm, 62cm multiplied by 41cm multiplied by 33cm, 58cm multiplied by 37cm multiplied by 32cm, 54cm multiplied by 33cm multiplied by 31cm, 50cm multiplied by 29cm multiplied by 30cm and 46cm multiplied by 25cm multiplied by 29cm, bamboo sheets are arranged alternately on the front and back sides, rattans are bound to form the specification bamboo basket biological medium, seven bamboo baskets from large to small are nested together to form a half group, the two half groups are buckled together to form a group of bamboo basket biological medium, the size of the outline is 70cm multiplied by 49cm multiplied by 70cm, and microbial agents are filled in gaps among the bamboo baskets.
5. The hospital sewage integrated treatment process according to claim 4, wherein the adding amount of the special magnetic seeds is 0.5kg per hundred tons of sewage, the adding amount of the special flocculating agent is 1 kg per hundred tons of sewage, the adding amount of the coagulant aid is 10 kg per hundred tons of sewage, and the time for the ultra-magnetic treatment is 3-6 min.
6. The integrated hospital sewage treatment process according to claim 5, wherein the waste residue produced by the super-magnetic separation system, i.e. the mixture of the special magnetic seeds and the suspended matters, is subjected to high-speed stirring and shearing to separate the special magnetic seeds from the suspended matters, the separated special magnetic seeds are recycled, and the demagnetized suspended matters form sludge which enters a sludge tank to be periodically removed.
7. The integrated hospital sewage treatment process according to claim 6, wherein the recovery method of the special magnetic seeds comprises the following steps: waste residues generated by the super-magnetic separation system enter a high-speed stirring and shearing link through a spiral conveying device, the separation of the special magnetic seeds and suspended matters is realized through high-speed stirring and shearing, the separated special magnetic seeds and non-magnetic suspended matters are separated from the special magnetic seeds through a magnetic separation magnetic drum, and the recycling of the special magnetic seeds is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280185.9A CN109896712B (en) | 2019-04-09 | 2019-04-09 | Integrated treatment process for green hospital sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910280185.9A CN109896712B (en) | 2019-04-09 | 2019-04-09 | Integrated treatment process for green hospital sewage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109896712A CN109896712A (en) | 2019-06-18 |
| CN109896712B true CN109896712B (en) | 2022-05-27 |
Family
ID=66954533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910280185.9A Active CN109896712B (en) | 2019-04-09 | 2019-04-09 | Integrated treatment process for green hospital sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109896712B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024014A (en) * | 2021-01-29 | 2021-06-25 | 云南和泽环保科技有限公司 | Hospital sewage treatment method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037655A (en) * | 2006-11-29 | 2007-09-19 | 金明记 | High-effective microorganism complex agent and method of using the same for treating city sewage |
| CN201062226Y (en) * | 2007-07-09 | 2008-05-21 | 文中智 | Medical wastewater treatment device |
| CN103819045A (en) * | 2014-01-26 | 2014-05-28 | 浙江省环境保护科学设计研究院 | Wastewater reuse method combining magnetic loading coagulation clarification and membrane separation |
| CN204151207U (en) * | 2014-11-05 | 2015-02-11 | 乐山倍创机械制造有限公司 | Infectious hospital's sewage purification intelligent control treatment system |
| CN204752494U (en) * | 2015-07-20 | 2015-11-11 | 谢晓东 | Sewage treatment system of hospital |
| CN205188086U (en) * | 2015-12-04 | 2016-04-27 | 乐山市山鹰模具有限责任公司 | Sewage treatment clean system of hospital |
| CN105948415A (en) * | 2016-07-15 | 2016-09-21 | 航天圣诺（北京）环保科技有限公司 | Hospital sewage treatment integrated device and method |
| CN205773951U (en) * | 2016-06-22 | 2016-12-07 | 盛世惠泽科技（天津）有限公司 | A kind of buried one biochemical sewage treatment device |
| CN108409024A (en) * | 2017-09-22 | 2018-08-17 | 王凯军 | A kind of biological adsorption strengthens Magneto separate sewage carbon source concentration recycling system and method |
| CN109133369A (en) * | 2018-09-24 | 2019-01-04 | 德清县新市乐安污水处理厂 | It is capable of handling the microorganism complex of variety classes sewage |
-
2019
- 2019-04-09 CN CN201910280185.9A patent/CN109896712B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101037655A (en) * | 2006-11-29 | 2007-09-19 | 金明记 | High-effective microorganism complex agent and method of using the same for treating city sewage |
| CN201062226Y (en) * | 2007-07-09 | 2008-05-21 | 文中智 | Medical wastewater treatment device |
| CN103819045A (en) * | 2014-01-26 | 2014-05-28 | 浙江省环境保护科学设计研究院 | Wastewater reuse method combining magnetic loading coagulation clarification and membrane separation |
| CN204151207U (en) * | 2014-11-05 | 2015-02-11 | 乐山倍创机械制造有限公司 | Infectious hospital's sewage purification intelligent control treatment system |
| CN204752494U (en) * | 2015-07-20 | 2015-11-11 | 谢晓东 | Sewage treatment system of hospital |
| CN205188086U (en) * | 2015-12-04 | 2016-04-27 | 乐山市山鹰模具有限责任公司 | Sewage treatment clean system of hospital |
| CN205773951U (en) * | 2016-06-22 | 2016-12-07 | 盛世惠泽科技（天津）有限公司 | A kind of buried one biochemical sewage treatment device |
| CN105948415A (en) * | 2016-07-15 | 2016-09-21 | 航天圣诺（北京）环保科技有限公司 | Hospital sewage treatment integrated device and method |
| CN108409024A (en) * | 2017-09-22 | 2018-08-17 | 王凯军 | A kind of biological adsorption strengthens Magneto separate sewage carbon source concentration recycling system and method |
| CN109133369A (en) * | 2018-09-24 | 2019-01-04 | 德清县新市乐安污水处理厂 | It is capable of handling the microorganism complex of variety classes sewage |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109896712A (en) | 2019-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Singh et al. | A mechanistic review on vermifiltration of wastewater: design, operation and performance | |
| CN101306867B (en) | High-efficiency purifier of biological enzyme | |
| CN102603064B (en) | A kind of method of Nitrogen-and Phosphorus-containing sewage synchronous denitrification dephosphorizing | |
| Kotteswari et al. | Phycoremediation of dairy effluent by using the microalgae Nostoc sp | |
| Samal et al. | A comparative study of macrophytes influence on performance of hybrid vermifilter for dairy wastewater treatment | |
| CN102923866A (en) | Device for implementing strengthened treatment for sewage through changing magnetic field and sewage treatment method | |
| Li et al. | Hazardous substances and their removal in recirculating aquaculture systems: A review | |
| Al-Dhabi et al. | Removal of nitrogen from wastewater of date processing industries using a Saudi Arabian mesophilic bacterium, Stenotrophomonas maltophilia Al-Dhabi-17 in sequencing batch reactor | |
| CN105621801A (en) | Biological reaction sewage treatment method | |
| Arora et al. | A comparative study for pathogen removal using different filter media during vermifiltration | |
| CN102874957A (en) | Method for processing liquid dung of pig farm through flocculation oxidizing resistance dimishing method | |
| CN104961289A (en) | Micro-nano aeration high-efficiency biotreatment technical system for livestock and poultry breeding wastewater | |
| CN111793565A (en) | ABS microbial agent for sewage treatment and preparation method thereof | |
| CN109896713B (en) | Method for treating sewage by using ABS microbial agent | |
| CN109896712B (en) | Integrated treatment process for green hospital sewage | |
| CN105960380A (en) | Effluent treatment method | |
| Prabu et al. | An overview of bioremediation towards aquaculture | |
| CN104843870A (en) | Magnetic carrier immobilized microorganism live bacteria preparation and preparation method and application thereof | |
| CN108409056A (en) | A kind of deep-purifying method of sanitary sewage | |
| CN104671587B (en) | A kind of fish jar water circulation treatment device | |
| CN105969698A (en) | Composite microbial inoculant for water purification | |
| JP2006212612A (en) | Method for decomposing and extinguishing excrement and urine of hog raising using composite fermentation method in composite microorganism dynamic system analysis of composite microorganism system | |
| CN108178303A (en) | A kind of livestock breeding wastewater processing unit of more technology couplings | |
| CN103880184A (en) | Sludge-free biologic ball ultra-clean sewage treatment method and system | |
| CN210620557U (en) | Water body sediment repair system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |