CN114409198A - Food wastewater treatment method based on modified basalt fiber filler and biological treatment agent - Google Patents
Food wastewater treatment method based on modified basalt fiber filler and biological treatment agent Download PDFInfo
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- CN114409198A CN114409198A CN202210116219.2A CN202210116219A CN114409198A CN 114409198 A CN114409198 A CN 114409198A CN 202210116219 A CN202210116219 A CN 202210116219A CN 114409198 A CN114409198 A CN 114409198A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/342—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the enzymes used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/043—Treatment of partial or bypass streams
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Activated Sludge Processes (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a food wastewater treatment method based on modified basalt fiber filler and a biological treatment agent, and belongs to the technical field of biochemical treatment of wastewater. The method treats food wastewater through a mixing tank, an adjusting tank, an aeration tank, a sedimentation tank, an activated carbon filter tank, a water outlet tank and a sludge tank, and adds modified basalt fiber filler (MBF filler) and a biological treatment agent into the aeration tank, thereby fundamentally improving the pure aerobic state in the conventional aeration tank, having high adaptability to impact load, and realizing anaerobic property, anoxic property and aerobic property in the same tank, thereby realizing synchronous denitrification and carbon removal, sludge reduction, floor area reduction, operation cost reduction and the like.
Description
Technical Field
The invention relates to a food wastewater treatment method based on a modified basalt fiber filler and a biological treatment agent, and belongs to the technical field of biochemical treatment of wastewater.
Background
The raw material composition of the food industry is complex, the products are various, the discharged wastewater contains a large amount of grease, suspended matters, heavy metal ions, nitrogen and phosphorus compounds, the water quality difference of the wastewater generated by different foods is large, the contents of organic matters, total nitrogen, total phosphorus and the like are very high, the biodegradability is high (the COD/BOD can reach about 0.85), and the organic load is high. The traditional sewage and wastewater treatment mostly adopts a biological method, mainly an activated sludge method and a biofilm method. Wherein the activated sludge method can effectively remove more than 90 percent of organic substances, but has limited denitrification effect. The biomembrane method is characterized in that sewage continuously flows through the solid filler, a sludge-like biomembrane can be formed on the filler, a large number of microorganisms are propagated on the biomembrane, and organic pollutants in the water are adsorbed and degraded, so that the sewage is purified.
However, due to mass transfer limitations, the effective thickness of the active biofilm in a biofilm process will generally not exceed 4000 μm. Otherwise, the lysis of dead cells inside the biofilm will convert to volatile fatty acids and insoluble gases (e.g. nitrogen), causing a local pH drop, disrupting the structure of the biofilm, forcing it to slough off. Therefore, increasing the biomass of the biological membrane, improving mass transfer and strengthening the acting force of the interface of the biological membrane and a carrier become important ways for improving the treatment efficiency of the sewage and the wastewater by the biological membrane method. Wherein, the biological filler is the technical core and key of the biological membrane method. The existing biological fillers are mainly divided into three forms of fixed type, suspended type and suspended type, the most common form comprises granular activated carbon, zeolite, polyethylene, carbon fiber and the like, but the carrier materials have the characteristics of small specific surface area and poor mass transfer and biomass adhesion capacity, so that the supply and the metabolic removal of DO and nutrients are limited.
In addition, in the process of treating food wastewater, a plurality of functional micro-areas such as aerobic, anoxic and anaerobic micro-areas are required to be arranged and used for realizing nitrogen and carbon removal, the biochemical pool is large in demand, and the process flow is complex, so that the novel efficient food wastewater treatment method is necessary.
Disclosure of Invention
The invention provides a food wastewater treatment method based on modified basalt fiber filler and a biological treatment agent, which is characterized in that on the basis of a biofilm method, the novel modified basalt fiber filler is adopted as a carrier for biochemical treatment, and the biological treatment agent capable of indirectly supplying oxygen is added into an aeration tank, so that the single aerobic state in the conventional aeration tank is fundamentally improved, the aeration tank has the functions of anaerobic treatment, anoxic treatment and aerobic treatment, the synchronous denitrification and carbon removal effects are realized, the combined design of an anaerobic tank, an aerobic tank and the like in the wastewater biochemical treatment stage is simplified, the effluent quality of food wastewater can reach the standard and can be discharged, and the effects of simplifying process flow, saving investment, reducing sludge and the like can be realized.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a food wastewater treatment method based on a modified basalt fiber filler and a biological treatment agent, which is characterized by comprising the following steps:
food wastewater sequentially passes through a mixing tank, a regulating tank, an aeration tank, a sedimentation tank, an activated carbon filter tank and a water outlet tank, so that the food wastewater is treated to reach the discharge standard, wherein modified basalt fiber filler and a biological treatment agent are added into the aeration tank, the food wastewater treated by the aeration tank enters the sedimentation tank to realize mud-water separation, part of separated sludge flows back to the aeration tank, the rest sludge enters the sludge tank to be treated, and supernatant enters the activated carbon filter tank and is discharged through the water outlet tank.
Further, the food wastewater is wastewater generated in the production of different foods (soy sauce, vinegar, sugar, etc.).
Furthermore, in the mixing tank, the food wastewater is fully stirred and mixed, and oil separation treatment is carried out, wherein the oil separation treatment process can adopt a horizontal flow type, and the purpose of oil stain separation is achieved through the difference of specific gravity of suspended matters in the wastewater and water.
Furthermore, the water inlet of the adjusting tank is provided with a grating for intercepting large particles and fibrous impurities entering the tank, then the wastewater enters the adjusting tank in a self-flowing mode, a stirrer and a lift pump are arranged in the adjusting tank, so that the quality and the quantity of the water are adjusted, the load change of the aeration tank is reduced, and the normal operation of a biochemical section is ensured, the aperture specification of the grating is 38.1mm, the thickness is 38mm, and the stirrer and the lift pump are connected with each otherThe elevator pump controls the flow of the food wastewater to be 10L/h or 10-20 kg/m3.d。
Further, the preparation method of the modified basalt fiber filler (MBF filler) comprises the following steps: the method comprises the steps of carrying out surface modification treatment on basalt fibers by using a physical coating method to prepare modified basalt fibers, and serially knitting single modified basalt fibers into umbrella-shaped modified basalt fiber fillers through stainless steel wires.
Further, the basalt fiber is an inorganic micron-sized green environment-friendly material, the diameter of the basalt fiber is 9-17 micrometers, the length of the basalt fiber is 10cm, and the fiber density is 1200 tex.
Furthermore, the surface of the modified basalt fiber is positively charged, the Zeta potential is +10-30mV, the biocompatibility is obviously improved, and the specific surface area can reach 2.5m2The fixing rate of the activated sludge can be improved by more than 2.5 times compared with the basalt fiber filler.
Further, the amount of the modified basalt fiber filler in the aeration tank is 200-250 bundles/m3The specific length is designed according to different sizes of the aeration tank, and the stainless steel chain is used for hanging so as to ensure the durability in the wastewater.
Furthermore, the biological treatment agent is oxidoreductase which can catalyze organic matters to generate active oxygen ions through nonuniform reaction and slowly react to generate oxygen so as to increase the dynamic oxygen content in the aeration tank, the active cations can improve the oxidation efficiency and accelerate the oxidation reaction, and the aim of reducing the number of blowers can be fulfilled3。
Furthermore, the modified basalt fiber filler can form a multi-layer biological nest structure (the diameter is more than or equal to 10cm) rich in various microorganisms such as anaerobic heterotrophic bacteria, aerobic autotrophic bacteria and the like in about one month, the biological nest structure is composed of a large amount of biomass, various gaps, holes and channels are filled inside the biological nest structure, the nutrient transfer and mass transfer effects among layers are facilitated, the microbial activity is high, and therefore the biological nest structure has aerobic, anoxic and anaerobic functions, and due to multiple functions in an aeration tank, the whole aeration tank is in a low-oxygen operation state (1.5-2.0 mg/L).
The nitrogen removal principle is as follows: CHON (organic) + O2 -→CHx+N2+NOx-N. Abundant biological phases and biomass are formed in the aeration tank to form a continuous and stable complete biological chain, including bacteria, protozoa, metazoan and the like, namely autolysis occurs to bacteria in the biological nest, the surface of the biological nest cannot be dissociated due to the unique structure of the biological nest, substances released by the autolyzed bacteria can be continuously used for microbial growth, and the metazoan can take the bacteria as food, so that the sludge amount can be reduced.
Furthermore, the reflux ratio of the sludge to the aeration tank is 50-100%.
Furthermore, the activated carbon filter tank utilizes high-efficiency activated carbon to carry out advanced treatment on effluent of the sedimentation tank, adopts gravity type double-row arrangement, and fully exerts the high-efficiency adsorption effect of the activated carbon, so that the effluent can be decolorized and deodorized, and the effluent quality reaches the discharge standard. Wherein the high-efficiency activated carbon is commercially available activated carbon for conventional water treatment, and the specific surface area of the activated carbon is more than 1000m2The adsorption capacity is strong, and the untreated micro pollutants, suspended matters, odor and the like can be adsorbed, so that the advanced treatment is finally realized.
The invention discloses the following technical effects:
the invention adopts the modified basalt fiber filler which can form a 'biological nest' structure, and adds the biological treatment agent which can indirectly supply oxygen into the aeration tank, thereby fundamentally improving the pure aerobic state in the conventional aeration tank, leading the aeration tank to have the functions of anaerobic treatment, anoxic treatment and aerobic treatment, realizing the effect of synchronous denitrification and carbon removal, having high adaptability to impact load, and realizing the anaerobic treatment, the anoxic treatment and the aerobic treatment in the same tank, thereby realizing the synchronous denitrification and carbon removal, the sludge reduction, the floor area reduction, the operation cost reduction and the like:
(1) the food wastewater treatment method of the invention has strong impact load resistance: "organisms" in the processThe adaptability of the nest structure to the impact load of wastewater quality is strong (10-20 kg/m)3D), can adapt to the fluctuation of water quality well, the effluent quality is comparatively stable. Wherein the removal rate of COD, TN and TP can reach more than 95 percent, and the effluent quality can reach the discharge standard.
(2) The aeration tank can realize synchronous denitrification and decarbonization: the process method only adopts 1 aeration tank, can well complete anaerobic, anoxic and aerobic biological processes, and can simultaneously realize denitrification and decarbonization, thereby reducing the number of biochemical tanks and the occupied area.
(3) The sludge reduction effect is obvious: the basalt fiber filler can finish film forming in the aeration tank within one month, the effluent quality is stable, a biological nest structure with the diameter of about 10cm is formed, the surface of the biological nest is not stripped after the operation is stable, the biological nest contains rich biomass and various biological phases, a complete biological chain can be formed, and the sludge amount can be reduced by more than 50%.
(4) Can run in low oxygen (1.5-2.0 mg/L), save energy and reduce consumption: modified basalt fiber filler in the aeration tank can be diffused to form an electron donor coil, the coil can be used as an electron donor for auxiliary oxygen supply under a low oxygen condition, and the biological treatment agent can also generate active oxygen atoms to improve the oxidation efficiency, so that the number of blowers in the aeration tank is reduced to some extent, and energy conservation and consumption reduction are realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a process flow diagram of a food wastewater treatment method according to the present invention;
FIG. 2 is a schematic view of the modified basalt fiber filler of the present invention and its "biological nest" structure, wherein (a) is the modified basalt fiber filler unit, and (b) is the "biological nest" structure of the modified basalt fiber filler.
Detailed Description
Reference will now be made in detail to various exemplary embodiments of the invention, the detailed description should not be construed as limiting the invention but as a more detailed description of certain aspects, features and embodiments of the invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Further, for numerical ranges in this disclosure, it is understood that each intervening value, between the upper and lower limit of that range, is also specifically disclosed. Every smaller range between any stated value or intervening value in a stated range and any other stated or intervening value in a stated range is encompassed within the invention. The upper and lower limits of these smaller ranges may independently be included or excluded in the range.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein can be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference herein for the purpose of disclosing and describing the methods and/or materials associated with the documents. In case of conflict with any incorporated document, the present specification will control.
It will be apparent to those skilled in the art that various modifications and variations can be made in the specific embodiments of the present disclosure without departing from the scope or spirit of the disclosure. Other embodiments will be apparent to those skilled in the art from consideration of the specification. The description and examples are intended to be illustrative only.
As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.
The activated sludge method and the biofilm method used in the embodiment of the invention are conventional technical means in the field, and are not regarded as the invention point and are not described in detail.
In the embodiment of the invention, the floor area of the biochemical pool and the comprehensive treatment cost are calculated according to the floor area of the biochemical pool used actually and the comprehensive treatment cost generated actually, and the actual data provided by a factory is used for accounting, which is not the invention point of the invention and is not described in detail.
The technical solution of the present invention is further illustrated by the following examples.
The food wastewater treatment method based on the modified basalt fiber filler and the biological treatment agent comprises the following steps:
fully stirring and mixing food wastewater in a mixing tank, performing oil separation treatment by adopting a advection type, allowing the food wastewater treated in the mixing tank to enter an adjusting tank in a self-flowing mode through a water inlet provided with a grid with the aperture specification of 38.1mm x 38.1mm and the thickness of 38mm, and controlling a stirrer and a lift pump in the adjusting tank to enable the flow of the food wastewater to be 10-20 kg/m3D, then flowing into an aeration tank, under the action of modified basalt filler and a biological treatment agent in the aeration tank, enabling the whole aeration tank to be in a low-oxygen operation state (1.5-2.0 mg/L), enabling the food wastewater treated by the aeration tank to enter a sedimentation tank to realize sludge-water separation, enabling part of separated sludge to flow back to the aeration tank, enabling the reflux ratio to be 50% -100%, enabling the rest sludge to enter a sludge tank to be treated, enabling supernatant to enter a sludge tank containing specific surface area larger than 1000m2The filter chamber of the active carbon per gram is discharged through the water outlet tank, and the discharged water can reach the discharge standard of the first class A.
The preparation method of the modified basalt fiber filler used in the embodiment of the invention comprises the following steps: the method comprises the steps of carrying out surface modification treatment on basalt fibers by using a physical coating method to prepare modified basalt fibers, wherein the surfaces of the modified basalt fibers are positively charged, the Zeta potential is +10-30mV, and the modified basalt fibers are woven into umbrella-shaped modified basalt fiber fillers shown in figure 2 (a). The modified basalt fiber filler can form a multi-layer biological nest structure (the diameter is more than or equal to 10cm) rich in various microorganisms such as anaerobic heterotrophic bacteria, aerobic autotrophic bacteria and the like in about one month, and the biological nest structure is shown in (b) in figure 2 and is composed of a large amount of biomass, various gaps, holes and channels are filled inside the biological nest structure, nutrient transfer and mass transfer effects among layers are facilitated, the activity of microorganisms is high, and therefore the biological nest structure has the functions of aerobic, anoxic and anaerobic.
The basalt fibers used in the embodiment of the invention are obtained by commercial purchase, the diameter is 9-17 μm, the length is 10cm, and the fiber density is 1200 tex.
The dosage of the modified basalt fiber filler used in the embodiment of the invention is 200-250 bundles/m3The biological treatment agent is oxidoreductase mainly containing Fe2+/Fe3+Component (b) is added in an amount of 50mL/m3。
Example 1
Simulation of high concentration organic wastewater treatment test
The contents of the components of the high-concentration organic wastewater are shown in Table 1.
TABLE 1 high concentration organic wastewater quality
The modified basalt fiber-based filler (200-250 bundles/m) is adopted3) And biological treatment agent (50 mL/m)3) The food wastewater treatment method comprises the steps of maintaining for 8-12 hours in Hydraulic Retention Time (HRT) in an aeration tank, controlling the sludge reflux ratio to be 40% -50% and controlling the dissolved oxygen to be 1.5-2.0 mg/L, and the treatment results are shown in Table 2. Wherein the occupied area of the biochemical pool after the sludge reduction is compared with that of the activated sludge method.
TABLE 2 treatment Effect
Example 2
Wastewater treatment test in food processing plant
Collecting food wastewater generated in the production process of soybean, vinegar, soy sauce, etc., and discharging wastewater of about 500m3Daily, food waste waterThe contents of the components are shown in Table 3.
TABLE 3 quality of wastewater from food processing plants
The modified basalt fiber-based filler (200-250 bundles/m) is adopted3,) and a biological treatment agent (50 mL/m)3) The food wastewater treatment method comprises the steps of maintaining for 8-12 hours in a Hydraulic Retention Time (HRT) in an aeration tank, controlling the sludge reflux ratio to be 50-100% and controlling the dissolved oxygen to be 1.5-2.0 mg/L, and the treatment results are shown in Table 4. Wherein the sludge reduction and the overall treatment cost saving are compared with those of the biofilm method, wherein 1 blower is also reduced in the aeration tank.
TABLE 4 treatment Effect
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. A food wastewater treatment method based on modified basalt fiber filler and a biological treatment agent is characterized by comprising the following steps:
the food wastewater sequentially passes through a mixing tank, a regulating tank, an aeration tank, a sedimentation tank, an activated carbon filter tank and a water outlet tank, so that the food wastewater is treated to reach the discharge standard, wherein modified basalt fiber filler and a biological treatment agent are added into the aeration tank, the food wastewater treated by the aeration tank enters the sedimentation tank to realize mud-water separation, part of separated sludge flows back to the aeration tank, the rest sludge enters the sludge tank to be treated, and supernatant enters the activated carbon filter tank and is discharged through the water outlet tank.
2. The food wastewater treatment method according to claim 1, wherein a water inlet of the adjusting tank is provided with a grating, a stirrer and a lift pump are arranged in the adjusting tank, the grating has a pore size of 38.1mm by 38.1mm and a thickness of 38mm, and the stirrer and the lift pump control the flow rate of the food wastewater to be 10-20 kg/m3.d。
3. The food wastewater treatment method according to claim 1, wherein the preparation method of the modified basalt fiber filler is: the method comprises the steps of carrying out surface modification treatment on basalt fibers by using a physical coating method to prepare modified basalt fibers, and weaving the modified basalt fibers into umbrella-shaped modified basalt fiber fillers.
4. The food wastewater treatment method according to claim 3, wherein the basalt fiber has a diameter of 9 to 17 μm, a length of 10cm, and a fiber density of 1200 tex.
5. The food wastewater treatment method according to claim 3, wherein the surface of the modified basalt fiber is positively charged, the Zeta potential is +10 to 30mV, and the amount of the modified basalt fiber filler in the aeration tank is 200 to 250 bundles/m3。
6. The method for treating food waste water according to claim 1, wherein the biological treatment agent is an oxidoreductase and is added in an amount of 50mL/m3。
7. The food wastewater treatment method according to claim 1, wherein a reflux ratio of the sludge to the aeration tank is 50% to 100%.
8. The food wastewater treatment method according to claim 1, wherein the specific surface area of activated carbon in the activated carbon filter is more than 1000m2/g。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117776389A (en) * | 2024-01-22 | 2024-03-29 | 江苏大学 | Quick culture method and application of chopped modified basalt fiber aerobic granular sludge |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492225A (en) * | 2009-03-03 | 2009-07-29 | 山东科技大学 | Method for treating wastewater of starch factory with complex enzyme/activated sludge process |
| CN101624253A (en) * | 2009-08-11 | 2010-01-13 | 福州晨翔环保工程有限公司 | High efficient complex enzyme sewage treatment process and high efficient complex enzyme sewage treatment device |
| CN102964021A (en) * | 2011-09-01 | 2013-03-13 | 中国石油化工股份有限公司 | Method for processing organic waste water |
| CN103086574A (en) * | 2013-02-27 | 2013-05-08 | 青岛理工大学 | Waste water treatment equipment for processing aquatic product |
| CN203159399U (en) * | 2013-03-28 | 2013-08-28 | 厦门绿动力环境治理工程有限公司 | Catering and food comprehensive wastewater treatment system |
| CN106277315A (en) * | 2016-08-12 | 2017-01-04 | 江苏艾特克环境工程设计研究院有限公司 | A kind of denitrification microorganism nest based on basalt fibre filler and cultural method thereof |
| CN108330686A (en) * | 2018-01-02 | 2018-07-27 | 江苏大学 | The preparation method of the chitin modified basalt fibre carrier of hydrophily |
| CN108558011A (en) * | 2018-06-22 | 2018-09-21 | 江苏艾特克环境工程设计研究院有限公司 | A kind of efficient water treatment facilities |
| CN108751746A (en) * | 2018-05-07 | 2018-11-06 | 江苏大学 | A kind of sewage/wastewater processing micro inorganic basalt fibre carrier surface modification method |
| CN109019859A (en) * | 2018-07-30 | 2018-12-18 | 江苏大学 | A kind of sewage/wastewater treatment reactor based on basalt fibre filler |
| CN109368811A (en) * | 2018-11-19 | 2019-02-22 | 北京正和恒基滨水生态环境治理股份有限公司 | Microbial compound enzyme filler and preparation method thereof and application method |
| CN109593685A (en) * | 2019-01-11 | 2019-04-09 | 江苏艾特克环境工程设计研究院有限公司 | A kind of anaerobic ammonoxidation bacterium concentrating method and device based on treated basalt fiber filler |
| CN112028384A (en) * | 2020-08-05 | 2020-12-04 | 浙江竟成环保科技有限公司 | Food wastewater treatment process |
| CN214004356U (en) * | 2020-06-03 | 2021-08-20 | 江苏艾特克环境工程设计研究院有限公司 | Biological nest processing apparatus to printing and dyeing waste water |
-
2022
- 2022-01-29 CN CN202210116219.2A patent/CN114409198A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492225A (en) * | 2009-03-03 | 2009-07-29 | 山东科技大学 | Method for treating wastewater of starch factory with complex enzyme/activated sludge process |
| CN101624253A (en) * | 2009-08-11 | 2010-01-13 | 福州晨翔环保工程有限公司 | High efficient complex enzyme sewage treatment process and high efficient complex enzyme sewage treatment device |
| CN102964021A (en) * | 2011-09-01 | 2013-03-13 | 中国石油化工股份有限公司 | Method for processing organic waste water |
| CN103086574A (en) * | 2013-02-27 | 2013-05-08 | 青岛理工大学 | Waste water treatment equipment for processing aquatic product |
| CN203159399U (en) * | 2013-03-28 | 2013-08-28 | 厦门绿动力环境治理工程有限公司 | Catering and food comprehensive wastewater treatment system |
| CN106277315A (en) * | 2016-08-12 | 2017-01-04 | 江苏艾特克环境工程设计研究院有限公司 | A kind of denitrification microorganism nest based on basalt fibre filler and cultural method thereof |
| CN108330686A (en) * | 2018-01-02 | 2018-07-27 | 江苏大学 | The preparation method of the chitin modified basalt fibre carrier of hydrophily |
| CN108751746A (en) * | 2018-05-07 | 2018-11-06 | 江苏大学 | A kind of sewage/wastewater processing micro inorganic basalt fibre carrier surface modification method |
| CN108558011A (en) * | 2018-06-22 | 2018-09-21 | 江苏艾特克环境工程设计研究院有限公司 | A kind of efficient water treatment facilities |
| CN109019859A (en) * | 2018-07-30 | 2018-12-18 | 江苏大学 | A kind of sewage/wastewater treatment reactor based on basalt fibre filler |
| CN109368811A (en) * | 2018-11-19 | 2019-02-22 | 北京正和恒基滨水生态环境治理股份有限公司 | Microbial compound enzyme filler and preparation method thereof and application method |
| CN109593685A (en) * | 2019-01-11 | 2019-04-09 | 江苏艾特克环境工程设计研究院有限公司 | A kind of anaerobic ammonoxidation bacterium concentrating method and device based on treated basalt fiber filler |
| CN214004356U (en) * | 2020-06-03 | 2021-08-20 | 江苏艾特克环境工程设计研究院有限公司 | Biological nest processing apparatus to printing and dyeing waste water |
| CN112028384A (en) * | 2020-08-05 | 2020-12-04 | 浙江竟成环保科技有限公司 | Food wastewater treatment process |
Non-Patent Citations (1)
| Title |
|---|
| 河北环境保护丛书编委会: "《河北环境污染防治》", 30 September 2011, 北京：中国环境科学出版社, pages: 139 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117776389A (en) * | 2024-01-22 | 2024-03-29 | 江苏大学 | Quick culture method and application of chopped modified basalt fiber aerobic granular sludge |
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