CN113213707A - Process method for municipal sewage in-situ standard-lifting and capacity-expanding - Google Patents
Process method for municipal sewage in-situ standard-lifting and capacity-expanding Download PDFInfo
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
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- B01D71/54—Polyureas; Polyurethanes
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/148—Combined use of inorganic and organic substances, being added in the same treatment step
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- C02F3/00—Biological treatment of water, waste water, or sewage
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a municipal sewage in-situ standard-lifting capacity-expanding process method, and belongs to the technical field of sewage treatment improvement. The invention is improved on the basis of the traditional municipal sewage treatment process, and a biomembrane blanket process is added in the biochemical pond, so that the symbiosis of sludge and membranes is realized, and the broad-spectrum adaptability is enhanced. Meanwhile, the sludge conditioner and the biological activity growth promoter are added in the treatment process, the two substances and the biological membrane blanket are mutually cooperated, the biological activity of the activated sludge can be greatly improved, and the sludge conditioner and the biological activity growth promoter are mixed with trace elements and stimulating factors required by the growth and proliferation of microorganisms, so that the biochemical reaction activity of the sludge can be improved, and the rapid metabolism and proliferation of the biological membrane are promoted. Compared with the prior art, the method can improve the sludge amount of the biochemical system by 50-200%, improve the biological activity by 30-50% and improve the mass transfer efficiency by 20-30%.
Description
Technical Field
The invention relates to a municipal sewage in-situ standard-lifting capacity-expanding process method, belonging to the technical field of sewage treatment improvement.
Background
The urban building construction is higher and higher, the sewage discharge amount in unit areas is larger and larger, and the national requirements on pollutant discharge standards are increased year by year. Therefore, the existing municipal sewage treatment plants face the dual pressure of expansion and upgrading, but cities have little excess land for expansion and upgrading of sewage plants. Therefore, the method for upgrading and expanding the capacity is either in-situ upgrading and expanding the capacity or remote transmission. However, the cost of long-distance transfer is high, the construction is difficult, and the in-situ upgrading and expansion become the urgent need of upgrading and expanding the urban sewage plant at present.
At present, in the prior art, the sludge concentration of a biochemical pond is improved by adding a fluidized filler or increasing MBR membrane concentrated sludge, but the two methods have great defects: firstly, the added fluidized filler has low quality and small specific surface area, and the required sludge concentration is difficult to achieve; secondly, as the filler flows along with water, the microbial flora is difficult to form a degradation gradient, strains are seriously homogenized, the degradation efficiency is greatly reduced, and if the fluidized filler is intercepted by a net, the problems of blockage and accumulation exist, the uniform distribution, the biological activity and the mass transfer efficiency of the biomass in the biochemical pond are influenced, so that the problems of succession of the biological flora, the biomass and the biological activity cannot be well solved by the method for adding the biological fluidized filler; thirdly, if MBR membrane is added to concentrate sludge, the concentration of the sludge is multiplied, but the problems of strain aging and poor activity are caused, the engineering investment is increased (about 30-40 percent) and the operation cost of sewage treatment is greatly increased (about 40-60 percent), and the problems of membrane blockage and high cost of membrane replacement are caused. In conclusion, the existing sewage treatment still faces the following three problems: (1) the activated sludge method is limited by sludge concentration, cannot expand capacity and improve the standard in situ, can expand capacity or transfer in a long distance in different places, cannot obtain required land, and has high construction cost and difficult realization; (2) the added fluidized filler flows along with water, so that a microbial flora is difficult to form a degradation gradient, strains are seriously homogenized, the degradation efficiency is greatly reduced, and the fluidized filler is generally small in specific surface area and biomass at present and easy to block; (3) when the MBR membrane concentrated sludge is added, the concentration of the sludge can be increased by times, but the problems of strain aging and poor activity can also be caused, the construction and operation cost can be increased, and the operation difficulty is higher. Therefore, the method capable of realizing municipal sewage in-situ scaling and expansion is provided, and is necessary to solve the problems of low sludge amount, low biological activity and low mass transfer efficiency of the existing sewage treatment biochemical system.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a process method for municipal sewage in-situ standard-raising and capacity-expanding.
The technical scheme of the invention is as follows:
a municipal sewage in-situ standard-lifting and capacity-expanding process method comprises the following steps: adding a sludge conditioner and a biological activity growth promoter into the biochemical tank, and suspending a biological membrane blanket device in the biochemical tank;
the sludge conditioner consists of an inorganic polymeric flocculant, an organic flocculant, a regulator and a sludge conditioning bulking agent;
the biological activity growth promoter consists of tourmaline, active zeolite, a biological growth regulator, xylanase and pectinase.
Further limiting, the mass ratio of the inorganic polymeric flocculant, the organic flocculant, the regulator and the sludge conditioning bulking agent in the sludge conditioner is 1:1:2: 2;
the adding amount of the sludge conditioner is 10 percent of the absolute dry weight of the sludge; the addition amount of the bioactive growth promoter is 2 ppm.
Further limiting, the inorganic polymeric flocculant in the sludge conditioner is polyaluminium chloride, the organic flocculant is beta-cyclodextrin-polyacrylamide, the sludge conditioner bulking agent is lime, and the conditioner is sodium bicarbonate.
Further limiting, the mass ratio of the tourmaline, the active zeolite, the biological growth regulator, the xylanase and the pectinase in the biological activity growth promoter is 1:1:2:1: 1.
Further limited, the biological growth regulator is fulvic acid, the particle size of the tourmaline is 800-1200 meshes, and the particle size of the active zeolite is 100-500 meshes.
Further inject, the vertical unsettled setting of biomembrane blanket device is in biochemical pond, and the orientation of placing of biomembrane blanket device for sewage treatment in biochemical pond is that the surface of biomembrane blanket is parallel with sewage water flow direction, and the bottom in biochemical pond needs to set up mud plug flow device, and mud plug flow device is greater than 1000mm apart from the bottom of biomembrane blanket device for sewage treatment.
Still further, the biofilm blanket device for sewage treatment comprises a stainless steel combined bracket, a plurality of membrane blankets supporting a stainless steel pipe and a plurality of biofilm blankets.
Further, the biofilm blanket in the biofilm blanket device is an inorganic ion doped modified polyurethane biofilm, and the preparation method of the inorganic ion doped modified polyurethane biofilm comprises the following steps:
(1) in the presence of dicumyl peroxide (DCP), polypropylene (PP) and hydroxyethyl methacrylate (HEMA) are melted and mixed, the reaction temperature is 180 ℃, the reaction time is 8min, and the use amount of HEMA is 6 wt% of PP.
(2) Then, 5-20% of inorganic ions (iron ions), 5-60% of polyurethane elastomer PU and 20-90% of polymer matrix are melted and blended to prepare the master batch containing the polyurethane elastomer and the polyurethane graft modification inorganic ions, wherein the dosage of the PU is 150 wt% of the inorganic ions.
(3) And finally, melting and blending the master batch, the functionalized polypropylene and the polymer matrix calcium carbonate particles in a ratio of 1:1:3 at the temperature of 180 ℃, the reaction time of 10 minutes and the rotor speed of 60rpm to prepare the inorganic ion doped modified polyurethane biomembrane.
The invention has the following beneficial effects: this application reforms transform on the basis of traditional municipal sewage treatment flow, adds biomembrane blanket technology in biochemical pond, realizes the mud membrane intergrowth, strengthens broad-spectrum adaptability, and because the biomembrane blanket is the modularization device, does benefit to transportation and field assembly, is particularly suitable for sewage plant's the dilatation of proposing the mark, the sludge concentration of improvement biochemical system that can be stable, the high-efficient biological bacterial of reservation to be convenient for the whole transfer of bacterial between the biochemical pond of different sewage plants. And the sludge conditioner and the biological activity growth promoter are added in the treatment process, the two substances and the biomembrane blanket are mutually cooperated, so that the biological activity of the activated sludge can be greatly improved, and the sludge conditioner and the biological activity growth promoter are mixed with trace elements (copper, zinc, cobalt and the like) and stimulating factors (carbon source, nitrogen source, inorganic salt and the like) required by the growth and proliferation of microorganisms, so that the biochemical reaction activity of the sludge can be improved, and the rapid metabolism and proliferation of the biomembrane can be promoted. In addition, the invention also has the following advantages:
(1) increasing the sludge concentration: after the biological membrane blanket device is added, the total sludge concentration of the biochemical pool can be increased from 3000-;
(2) improving the biological activity: due to the addition of the biomembrane blanket and the cooperation of the special sludge conditioner and the bioactive growth promoter, the bioactivity of the activated sludge can be greatly improved, and the aged biomembrane on the surface of the biomembrane blanket continuously falls off and can be kept fresh all the time due to the flushing disturbance of aeration at the bottom of the biomembrane blanket;
(3) mass transfer efficiency is increased: when the bottom of the biological membrane blanket is aerated, the instability of the air flow leads to the random self-rotation of the biological membrane blanket, and the random swinging of the biological membrane blanket around is realized under the turbulent motion of the air flow, thereby realizing more efficient material mass transfer and promoting the efficient implementation of biochemical reaction. Sludge reduction and aeration saving can be realized: because the sludge concentration is improved in multiples and the biological activity is increased, the biochemical pool with the same volume can treat more sewage, the degradation of organic matters is carried out under low load, the sludge reduction is facilitated, and the aeration quantity is not obviously increased, so that the sludge discharge is reduced by more than 30%, the energy consumption is saved by more than 20%, and meanwhile, the residual sludge contains ammonia nitrogen sediment substances, so that the biological sewage treatment device can be used as a fertilizer for plants and provides nutrient substances for the growth of the plants.
(4) Remote transfer of domesticated mature strains: the modularized biological membrane blanket enables sludge inoculation to be more convenient, after the biological membrane blanket of the biochemical pool is debugged, the biological membrane on the biological membrane blanket is mature biological strains which can be output as a strain source, and the modularized structure enables the strains to be more conveniently and efficiently transferred and saves cost.
(5) Water supply non-stop, lifting the mark and expanding the volume: the modularized biofilm blanket design realizes the direct hoisting operation mode without stopping water, can carry out the upgrading, the expanding and the changing of the sewage plant under the normal operation condition of the sewage plant, and reduces the changing cost and the influence to the lowest.
(6) Short time, low cost, energy conservation and emission reduction: the biological membrane blanket modification mode of the sewage plant can greatly shorten the modification time of the sewage plant, can be completed in about one month basically, takes 1/6 as the time, cannot cause the overflow of sewage during modification, and avoids secondary environmental pollution and emission reduction loss brought during modification.
(7) The standard is high: the sewage plant which is subjected to the upgrading and the capacity expansion of the biomembrane blanket can realize the upgrading of one discharge standard on the basis of the original standard, namely, can realize better denitrification and dephosphorization effects, and the discharge standard can be improved to the class A or the class IV.
(8) The biomembrane blanket is a modified biomembrane blanket and is characterized in that the modification is carried out by compounding inorganic particles and polyurethane, thereby improving the thermal stability and the tensile resistance of a matrix material of the biomembrane blanket and improving the hydrophilicity and the mass transfer of the membrane.
(9) The inorganic polymeric flocculant in the sludge conditioner adopts polyaluminium chloride, the organic flocculant adopts beta-cyclodextrin-polyacrylamide, and the sludge conditioning bulking agent adopts lime. The inorganic polymeric flocculant and the sludge extracellular LB-EPS are mutually polymerized, the capillary water absorption time of the sludge is reduced, the dehydration performance of the sludge is increased, the reticular skeleton structure of the organic flocculant structure increases the flocculation degree, the organic polymeric flocculant interacts with a biomembrane blanket, the membrane is convenient to hang, the water osmotic pressure is improved, the sludge dehydration performance is also increased, the tourmaline in the biological activity growth promoter improves the activity of xylanase and pectinase, macromolecular organic matters can be degraded, water molecule clusters are reduced, microcirculation is improved, the activity of bacteria is improved simultaneously, the viscosity capability and the sedimentation performance are improved, the denitrification capability of denitrifying bacteria is improved, and the fulvic acid serving as a growth regulator can also improve the growth and the nutrition absorption capability of the bacteria.
Drawings
FIG. 1 is a process flow diagram of example 1;
FIG. 2 is a COD comparison graph before and after sewage treatment under various working conditions in example 1;
FIG. 3 is a comparative TN curve before and after sewage treatment under various working conditions in example 1;
FIG. 4 is a comparison graph of TP before and after sewage treatment under various working conditions in example 1;
FIG. 5 is a COD comparison graph before and after sewage treatment under various working conditions in example 2;
FIG. 6 is a comparative TN curve before and after sewage treatment under various working conditions in example 2;
FIG. 7 is a comparison graph of TP before and after sewage treatment under various conditions in example 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The experimental procedures used in the following examples are conventional unless otherwise specified. The materials, reagents, methods and apparatus used, unless otherwise specified, are conventional in the art and are commercially available to those skilled in the art.
Example 1:
working condition 1: using only bio-film blanket
In original A2The original A is transformed on the basis of the sewage treatment process2The main process of O sewage treatment comprises water inlet → grille → anaerobic tank → anoxic tank → aerobic tank → sedimentation tank → water outlet, in the original A2O sewage treatment is added in the good oxygen pond and is used biomembrane blanket device, this sewage treatment is used biomembrane blanket device for sewage treatment that patent number is ZL201922130741.2 discloses, includes the following step:
(1) the bottom of the biomembrane blanket device is supported and installed, the two ends of the supporting steel structure are fixed on the inner wall of the aerobic tank at the position 1500mm above the aerator at the bottom of the aerobic biochemical tank, and then the glass fiber reinforced plastic grating is placed on the upper end surface of the supporting steel structure.
(2) Placing the inorganic ion doped modified polyurethane biomembrane as a biomembrane blanket on a glass fiber reinforced plastic grid, and finally fastening the biomembrane blanket device for sewage treatment with the glass fiber reinforced plastic grid and a supporting steel structure by using a fixing bolt, namely completing the installation of the biomembrane blanket device for sewage treatment in a bottom bearing mode.
The preparation process of the inorganic ion doped modified polyurethane biological membrane comprises the following steps:
1) in the presence of dicumyl peroxide (DCP), polypropylene (PP) and hydroxyethyl methacrylate (HEMA) are melted and mixed, the reaction temperature is 180 ℃, the reaction time is 8min, and the consumption of HEMA is 6 wt% of PP.
2) Then melting and blending the inorganic ions, the polyurethane elastomer PU and the polymer matrix to prepare the master batch containing the polyurethane elastomer and the polyurethane graft modified inorganic ions, wherein the dosage of the PU is 150 wt% of the inorganic ions.
3) And finally, melting and blending the master batch, the functionalized polypropylene and the polymer matrix at the temperature of 180 ℃, the reaction time of 10min and the rotor speed of 60rpm to prepare the inorganic ion doped modified polyurethane biomembrane.
(3) The biological membrane blanket device for sewage treatment is placed in the aerobic tank in a direction that the surface of the biological membrane blanket is parallel to the sewage water flow direction, a sludge plug-flow device is required to be arranged at the bottom of the aerobic tank, and the distance from the sludge plug-flow device to the bottom of the biological membrane blanket device for sewage treatment is 1200 mm.
(4) The sewage enters a treatment process, flows into an aerobic reaction tank through a series of original treatment equipment, passes through a biomembrane blanket device, is combined with a biomembrane method to realize the symbiosis of sludge membranes, increase the sludge amount and the sludge activity and realize the reduction of the degradation load of organic matters.
(5) And the wastewater treated by the biomembrane device enters a sedimentation tank for treatment, and then the effluent is discharged after reaching the standard.
Working condition 2: unused biological film blanket
In original A2The original A is transformed on the basis of the sewage treatment process2The main process of O sewage treatment comprises water inlet → grille → anaerobic tank → anoxic tank → aerobic tank → sedimentation tank → water outlet, in the original A2And adding a sludge conditioner and a bioactive growth promoter into the aerobic pool for treating the O sewage, wherein the adding amount of the sludge conditioner is larger than that of the bioactive growth promoter.
Working condition 3: adding the biological film blanket, the conditioner and the growth promoter
In original A2The original A is transformed on the basis of the sewage treatment process2The main process of O sewage treatment comprises water inlet → grille → anaerobic tank → anoxic tank → aerobic tank → sedimentation tank → water outlet, specifically in the original A2O sewage treatment adds biofilm blanket device for sewage treatment in the good oxygen pond to add sludge conditioning agent and biological activity growth promoter in good oxygen pond, what is what the sludge conditioning agent addition, what is the biological activity growth promoter addition, this biofilm blanket device for sewage treatment is the biofilm blanket device for sewage treatment that patent number is ZL201922130741.2 discloses, specifically includes the following step:
(1) the bottom of the biomembrane blanket device is supported and installed, the two ends of the supporting steel structure are fixed on the inner wall of the biochemical tank at the position 1500mm above the aerator at the bottom of the aerobic biochemical tank, and then the glass fiber reinforced plastic grating is placed on the upper end surface of the supporting steel structure.
(2) Placing the inorganic ion doped modified polyurethane biomembrane as a biomembrane blanket on a glass fiber reinforced plastic grid, and finally fastening the biomembrane blanket device for sewage treatment with the glass fiber reinforced plastic grid and a supporting steel structure by using a fixing bolt, namely completing the installation of the biomembrane blanket device for sewage treatment in a bottom bearing mode.
(3) The biological membrane blanket device for sewage treatment is placed in the biochemical pool in a direction that the surface of the biological membrane blanket is parallel to the sewage water flow direction, a sludge plug-flow device is required to be arranged at the bottom of the biochemical pool, and the distance from the sludge plug-flow device to the bottom of the biological membrane blanket device for sewage treatment is 1200 mm.
(4) The sewage enters a treatment process, flows into an aerobic reaction tank through a series of original treatment equipment, passes through a biomembrane blanket device, is combined with a biomembrane method to realize the symbiosis of sludge membranes, increase the sludge amount and the sludge activity and realize the reduction of the degradation load of organic matters.
(5) And the wastewater treated by the biomembrane device enters a sedimentation tank for treatment, and then the effluent is discharged after reaching the standard.
The COD, TN and TP comparison curve before and after sewage treatment under various working conditions of the embodiment is shown in FIG. 1.
Example 2:
working condition 1: using only bio-film blanket
The method is characterized in that the method is modified on the basis of the original SBR sewage treatment process, the main process of the original SBR sewage treatment process comprises the steps of water inlet → a grid → an anaerobic pool → an adjusting pool → a SBR reaction pool → a precipitation disinfection pool → water outlet, a biomembrane blanket device for sewage treatment is added into the original SBR reaction pool, and the biomembrane blanket device for sewage treatment disclosed as patent No. ZL201922130741.2 comprises the following steps:
(1) the upper part of the biological membrane device is fixedly arranged: the inorganic ion-doped modified polyurethane biomembrane similar to that in example 1 is used as a biomembrane blanket and is placed on a glass fiber reinforced plastic grid, and then two ends of the upper part of the supporting steel structure are fixed at the upper edge of the SBR reaction tank, so that the biomembrane blanket device for sewage treatment is fixedly installed on the upper part.
(2) The biological membrane blanket device for sewage treatment is placed in the biochemical pool in a direction that the surface of the biological membrane blanket is parallel to the sewage water flow direction, a sludge plug flow device needs to be arranged at the bottom of the biochemical pool, and the distance from the sludge plug flow device to the bottom of the biological membrane blanket device for sewage treatment is 1300 mm.
(3) The sewage enters a treatment process, flows into an SBR reaction tank through a series of original treatment equipment, passes through a biomembrane blanket device, is combined with a biomembrane method to realize the symbiosis of sludge membranes, increase the sludge amount and the sludge activity and realize the reduction of the degradation load of organic matters.
(4) And the wastewater treated by the biomembrane device enters a sedimentation tank for treatment, and then the effluent is discharged after reaching the standard.
Working condition 2: unused biological film blanket
The method is improved on the basis of the original SBR sewage treatment process, the main process of the original SBR sewage treatment process comprises water inlet → a grid → an anaerobic tank → an adjusting tank → an SBR reaction tank → a precipitation and disinfection tank → water outlet, and a sludge conditioner and a bioactive growth promoting agent are added into the SBR reaction tank of the original SBR sewage treatment process, wherein the adding amount of the sludge conditioner is more than that of the bioactive growth promoting agent.
Working condition 3: adding the biological film blanket, the conditioner and the growth promoter
The sewage treatment device is modified on the basis of the original SBR sewage treatment process, the main process of the original SBR sewage treatment process comprises the steps of water inlet → a grid → an anaerobic pool → an adjusting pool → a SBR reaction pool → a precipitation disinfection pool → water outlet, a biomembrane blanket device for sewage treatment is added into the original SBR reaction pool, a sludge conditioner and a biological activity growth promoting agent are added, the adding amount of the sludge conditioner is ZL, the adding amount of the biological activity growth promoting agent is ZL, and the biomembrane blanket device for sewage treatment is the biomembrane blanket device for sewage treatment disclosed by the patent number of ZL201922130741.2 and comprises the following steps:
(1) the upper part of the biological membrane device is fixedly arranged: the inorganic ion-doped modified polyurethane biomembrane similar to that in example 1 is used as a biomembrane blanket and is placed on a glass fiber reinforced plastic grid, and then two ends of the upper part of the supporting steel structure are fixed at the upper edge of the SBR reaction tank, so that the biomembrane blanket device for sewage treatment is fixedly installed on the upper part.
(2) The biological membrane blanket device for sewage treatment is placed in the biochemical pool in a direction that the surface of the biological membrane blanket is parallel to the sewage water flow direction, a sludge plug flow device needs to be arranged at the bottom of the biochemical pool, and the distance from the sludge plug flow device to the bottom of the biological membrane blanket device for sewage treatment is 1300 mm.
(3) The sewage enters a treatment process, flows into an SBR reaction tank through a series of original treatment equipment, passes through a biomembrane blanket device, is combined with a biomembrane method to realize the symbiosis of sludge membranes, increase the sludge amount and the sludge activity and realize the reduction of the degradation load of organic matters.
(4) And the wastewater treated by the biomembrane device enters a sedimentation tank for treatment, and then the effluent is discharged after reaching the standard.
The COD, TN and TP comparison curve before and after sewage treatment under various working conditions of the embodiment is shown in FIG. 2.
And (3) effect analysis:
as can be seen from fig. 1 and 2, in the embodiments 1 and 2, the sewage treated under the condition of the working condition 3 can reduce the secondary environmental pollution to the maximum extent, bring a large scale-raising and capacity-expanding space to the original sewage plant, greatly save the once investment cost for the modification of the sewage plant, and simultaneously shorten the construction modification period and difficulty. The engineering application method for treating sewage by the biomembrane blanket can realize multiple beneficial effects of benefit, efficiency, saving, environmental protection and the like. Compared with the prior art, the method can improve the sludge content of the biochemical system by 50-200%, improve the biological activity by 30-50% and improve the mass transfer efficiency by 20-30%.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A municipal sewage in-situ standard-lifting capacity-expanding process method is characterized by comprising the following steps: adding a sludge conditioner and a biological activity growth promoter into the biochemical tank, and suspending a biological membrane blanket device in the biochemical tank;
the sludge conditioner consists of an inorganic polymeric flocculant, an organic flocculant, a regulator and a sludge conditioning bulking agent;
the biological activity growth promoter consists of tourmaline, active zeolite, a biological growth regulator, xylanase and pectinase;
the addition amount of the sludge conditioner is 10 percent of the absolute dry weight of the sludge; the addition amount of the bioactive growth promoter is 2 ppm.
2. The process method for in-situ scaling and dilatation of municipal sewage according to claim 1, wherein the mass ratio of the inorganic polymeric flocculant, the organic flocculant, the regulator and the sludge conditioning bulking agent in the sludge conditioner is 1:1:2: 2.
3. The process method for in-situ scaling and dilatation of municipal sewage according to claim 1 or 2, wherein the inorganic polymeric flocculant in the sludge conditioner is polyaluminium chloride, the organic flocculant is beta-cyclodextrin-polyacrylamide, the sludge conditioning bulking agent is lime, and the conditioning agent is sodium bicarbonate.
4. The process method for in-situ scaling and expansion of municipal sewage according to claim 1, wherein the mass ratio of tourmaline, active zeolite, biological growth regulator, xylanase and pectinase in the biological activity promoter is 1:1:2:1: 1.
5. The in-situ scaling and expansion process method for municipal sewage according to claim 1 or 4, wherein the biological growth regulator is fulvic acid, the particle size of the tourmaline is 800-1200 meshes, and the particle size of the active zeolite is 100-500 meshes.
6. The process method for in-situ labeling and dilatation of municipal sewage according to claim 1, wherein the biofilm blanket device is vertically suspended in the biochemical tank, the biofilm blanket device for sewage treatment is placed in the biochemical tank in a direction that the surface of the biofilm blanket is parallel to the sewage flow direction, a sludge plug flow device is required to be arranged at the bottom of the biochemical tank, and the distance between the sludge plug flow device and the bottom of the biofilm blanket device for sewage treatment is greater than 1000 mm.
7. The process of in-situ labeling and dilatation of municipal sewage according to claim 1, wherein the biofilm blanket device for sewage treatment comprises a stainless steel composite bracket, a plurality of membrane blankets supporting a stainless steel tube and a plurality of biofilm blankets.
8. The process method for in-situ labeling and dilatation of municipal sewage according to claim 7, wherein the biofilm blanket in the biofilm blanket device is an inorganic ion doped modified polyurethane biofilm, and the preparation method of the inorganic ion doped modified polyurethane biofilm comprises:
(1) in the presence of dicumyl peroxide (DCP), melting and mixing polypropylene (PP) and hydroxyethyl methacrylate (HEMA), wherein the reaction temperature is 180 ℃, the reaction time is 8 minutes, and the consumption of HEMA is 6 wt% of PP;
(2) then melting and blending the inorganic ions, the polyurethane elastomer PU and the polymer matrix to prepare a master batch containing the polyurethane elastomer and the polyurethane graft modified inorganic ions, wherein the dosage of the PU is 150 wt% of the inorganic ions;
(3) and finally, melting and blending the master batch, the functionalized polypropylene and the polymer matrix at the temperature of 180 ℃, the reaction time of 10 minutes and the rotor speed of 60rpm to prepare the inorganic ion doped modified polyurethane biomembrane.
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113217A (en) * | 1995-05-10 | 1995-12-13 | 宋乾武 | Biological treatment method for waste water |
| US20040058430A1 (en) * | 2000-12-27 | 2004-03-25 | Christian Uphoff | Method and conditioning agent for treating waste water and air pollutants |
| CN101280080A (en) * | 2008-05-23 | 2008-10-08 | 中山大学 | Inorganic nano-particle/urethane elastomer/polymer composite material and preparation thereof |
| CN101717154A (en) * | 2009-11-30 | 2010-06-02 | 沈阳大学 | Complex biological growth promoter used for recovering river bottom sediment |
| CN101767865A (en) * | 2010-02-24 | 2010-07-07 | 哈尔滨工业大学 | Filler for sewage treatment and preparation method thereof |
| US20100206808A1 (en) * | 2007-08-28 | 2010-08-19 | Diamond Engineering Co., Ltd. | Activated sludge material, method for reducing excess sludge production in bioreactor, and method of controlling bioreactor |
| CN104058570A (en) * | 2014-06-19 | 2014-09-24 | 陕西九环新材料有限责任公司 | Slurry destabilizing agent for membrane filter press and using method thereof |
| CN106277286A (en) * | 2016-08-30 | 2017-01-04 | 中蓝连海设计研究院 | The removing method of activated sludge sticky inflation in biochemical system |
| CN107903494A (en) * | 2017-11-22 | 2018-04-13 | 西安交通大学 | A kind of polypropylene-base blending type nanocomposite and preparation method thereof |
| CN108751391A (en) * | 2018-08-01 | 2018-11-06 | 武汉大学 | A kind of biofilm packing and its preparation method and application that gutta-percha is modified |
| CN109019874A (en) * | 2018-09-08 | 2018-12-18 | 佛山市森昂生物科技有限公司 | A kind of biological growth promoter and preparation method thereof for paper waste |
| CN110790398A (en) * | 2019-12-02 | 2020-02-14 | 哈尔滨工业大学环境股份有限公司 | Biological membrane blanket device for sewage treatment and engineering application method |
| CN111018115A (en) * | 2020-01-09 | 2020-04-17 | 成都市农林科学院 | Biological membrane device and freshwater aquaculture tail water treatment method |
| CN211056808U (en) * | 2019-12-02 | 2020-07-21 | 工大环境股份有限公司 | Biomembrane blanket device for sewage treatment |
| CN112174492A (en) * | 2020-09-30 | 2021-01-05 | 神美科技有限公司 | Composite sludge conditioner |
| AU2020103389A4 (en) * | 2020-11-11 | 2021-01-28 | Harbin Institute Of Technology | Novel Filler Magic Cube-XQ (Magic Cube-XQ) for Sewage Treatment and Preparation Method |
-
2021
- 2021-05-31 CN CN202110599481.2A patent/CN113213707B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1113217A (en) * | 1995-05-10 | 1995-12-13 | 宋乾武 | Biological treatment method for waste water |
| US20040058430A1 (en) * | 2000-12-27 | 2004-03-25 | Christian Uphoff | Method and conditioning agent for treating waste water and air pollutants |
| US20100206808A1 (en) * | 2007-08-28 | 2010-08-19 | Diamond Engineering Co., Ltd. | Activated sludge material, method for reducing excess sludge production in bioreactor, and method of controlling bioreactor |
| CN101280080A (en) * | 2008-05-23 | 2008-10-08 | 中山大学 | Inorganic nano-particle/urethane elastomer/polymer composite material and preparation thereof |
| CN101717154A (en) * | 2009-11-30 | 2010-06-02 | 沈阳大学 | Complex biological growth promoter used for recovering river bottom sediment |
| CN101767865A (en) * | 2010-02-24 | 2010-07-07 | 哈尔滨工业大学 | Filler for sewage treatment and preparation method thereof |
| CN104058570A (en) * | 2014-06-19 | 2014-09-24 | 陕西九环新材料有限责任公司 | Slurry destabilizing agent for membrane filter press and using method thereof |
| CN106277286A (en) * | 2016-08-30 | 2017-01-04 | 中蓝连海设计研究院 | The removing method of activated sludge sticky inflation in biochemical system |
| CN107903494A (en) * | 2017-11-22 | 2018-04-13 | 西安交通大学 | A kind of polypropylene-base blending type nanocomposite and preparation method thereof |
| CN108751391A (en) * | 2018-08-01 | 2018-11-06 | 武汉大学 | A kind of biofilm packing and its preparation method and application that gutta-percha is modified |
| CN109019874A (en) * | 2018-09-08 | 2018-12-18 | 佛山市森昂生物科技有限公司 | A kind of biological growth promoter and preparation method thereof for paper waste |
| CN110790398A (en) * | 2019-12-02 | 2020-02-14 | 哈尔滨工业大学环境股份有限公司 | Biological membrane blanket device for sewage treatment and engineering application method |
| CN211056808U (en) * | 2019-12-02 | 2020-07-21 | 工大环境股份有限公司 | Biomembrane blanket device for sewage treatment |
| CN111018115A (en) * | 2020-01-09 | 2020-04-17 | 成都市农林科学院 | Biological membrane device and freshwater aquaculture tail water treatment method |
| CN112174492A (en) * | 2020-09-30 | 2021-01-05 | 神美科技有限公司 | Composite sludge conditioner |
| AU2020103389A4 (en) * | 2020-11-11 | 2021-01-28 | Harbin Institute Of Technology | Novel Filler Magic Cube-XQ (Magic Cube-XQ) for Sewage Treatment and Preparation Method |
Non-Patent Citations (3)
| Title |
|---|
| 姬爱民等: "《污泥热处理》", 31 August 2014, 冶金工业出版社 * |
| 杜振峰等: "化学氧化-铁离子覆盖改性聚氨酯泡沫塑料填料的特性", 《化工进展》 * |
| 谭冲等: "电气石强化生物膜系统处理中药废水的启动及生物膜特性分析", 《环境工程学报》 * |
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