CN106423042B - Precision phosphorus removal nano material, preparation method thereof and conventional power integrated sewage treatment equipment - Google Patents

Precision phosphorus removal nano material, preparation method thereof and conventional power integrated sewage treatment equipment Download PDF

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CN106423042B
CN106423042B CN201610850517.9A CN201610850517A CN106423042B CN 106423042 B CN106423042 B CN 106423042B CN 201610850517 A CN201610850517 A CN 201610850517A CN 106423042 B CN106423042 B CN 106423042B
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precision
phosphorus removal
particles
particle size
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CN106423042A (en
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奉向东
耿亮
宁小飞
袁勇
向阳
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Gftem Environmental Protection Technology Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/12—Naturally occurring clays or bleaching earth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • 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
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • 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
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
    • 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
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1236—Particular type of activated sludge installations
    • C02F3/1268—Membrane bioreactor systems
    • 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

Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a precision phosphorus removal nano material, a preparation method thereof and conventional power integrated sewage treatment equipment. The material is prepared by dry mixing, pugging, firing and the like 20-50 parts of montmorillonite, 30-60 parts of bentonite and 10-30 parts of activated clay. The conventional power integrated sewage treatment equipment comprises an anoxic zone, an aerobic zone, a membrane pool zone, an equipment zone and a precision phosphorus removal zone which are sequentially communicated, wherein a carrier is arranged in the middle of the anoxic zone, a multifunctional nano composite material is loaded in the carrier, a loading box is arranged in the precision phosphorus removal zone, and multiple layers of precision phosphorus removal nano particles are arranged in the loading box. The conventional power integrated treatment system can obviously improve the removal efficiency of pollution factors such as COD, ammonia nitrogen, total phosphorus, heavy metals, SS and the like of the incoming water, the removal efficiency is respectively more than or equal to 95%, 97%, 98% and 99%, and the effluent index is superior to the national first-class A standard.

Description

Precision phosphorus removal nano material, preparation method thereof and conventional power integrated sewage treatment equipment
Technical Field
The invention belongs to the technical field of water treatment, and particularly relates to a precision phosphorus removal nano material, a preparation method thereof and conventional power integrated sewage treatment equipment.
Background
In recent years, with the development of economic level of villages and towns in China, the concentration and the total discharge amount of domestic sewage pollutants in the villages and the towns are increased year by year, and particularly, the ecological environment of the villages and the towns is increasingly severe due to over-standard discharge of nitrogen and phosphorus which are rich in nutrient elements; the village and town sewage has the characteristics of high dispersibility, large water quality and water quantity variability, difficulty in centralized collection and treatment and the like, so that the treatment difficulty is higher, and the attention of people is attracted more and more. Meanwhile, with the increasing living standard of urban residents in China, the urban sewage quality is increasingly complex, and the types and concentrations of pollutants are complex and changeable; part of service industry and industrial sewage is often doped, so that the urban ecological environment, particularly a water system, is seriously polluted, the water body eutrophication and black and odorous phenomena are caused, and the ecological human landscape is seriously influenced.
The conventional power integrated decentralized sewage treatment equipment plays a great role in the treatment of decentralized point source sewage in villages and towns and urban sewage, has the characteristics of compact structure, small occupied area, mobility, convenience in installation, higher automation degree, better effluent quality and the like, and is widely applied. It is in a stage of development and further development is still needed.
Chinese patent 201410556467.4 discloses a sewage treatment system. However, like most of the similar patents, the method is mainly based on the existing processing units, structures and materials, and has certain advantages in specificity, but has certain limitation in comprehensive processing effect.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a precision phosphorus removal nano material, a preparation method thereof and conventional power integrated sewage treatment equipment. Aiming at the current situation that COD, ammonia nitrogen and total nitrogen removal efficiency of domestic sewage in villages and towns and urban sewage is low, especially aiming at heavy metal, nitrogen and phosphorus pollutants in the sewage, the removal effect is improved so as to solve the problems of eutrophication of receiving water and heavy metal pollution of soil, the water outlet transparency is greatly improved, and a solution is provided for avoiding adverse influence of sludge bulking, greatly reducing the yield of excess sludge and treating cost.
The technical scheme provided by the invention is as follows:
a preparation method of a precision phosphorus removal nano material comprises the following steps:
1) and (2) putting 20-50 parts of montmorillonite, 30-60 parts of bentonite and 10-30 parts of activated clay into a high-speed mixer for mixing to obtain the dry mixture.
Preferably, the fineness of the montmorillonite is below 5 microns, and the purity is above 98%; the fineness of the bentonite is below 10 microns, and the purity is above 95%; the fineness of the activated clay is below 8 microns, and the purity is above 95%.
2) Mixing 18-22% of calcium acetate solution with the dry mixture obtained in the step 1) according to the weight ratio of 0.2-0.4: 1, wet mixing, and pugging to obtain the mud block.
Specifically, the pugging time is 20-30 minutes.
3) Extruding and molding the mud blocks obtained in the step 2) into granules.
Preferably, the particle size of the particles is 3-12 mm.
4) Drying the particles obtained in the step 3) in a drying kiln to obtain a dry formed product.
Preferably, the water content of the dried molded product is less than 8%.
5) Heating the dried formed product obtained in the step 4) for 0.5-1.5 hours to a firing temperature of 700-850 ℃ for firing for 0.5-1.5 hours to obtain the phosphorus removal nano material.
The invention also provides the precision phosphorus removal nano material prepared by the preparation method of the precision phosphorus removal nano material.
The invention also provides a conventional power integrated sewage treatment device, which comprises an anoxic zone, an aerobic zone, a membrane pool zone, a facility zone and a precision phosphorus removal zone which are sequentially communicated, wherein a water outlet self-sucking pump is arranged in the facility zone, the upper part of the anoxic zone is communicated with the upper part of the aerobic zone, the lower part of the aerobic zone is communicated with the lower part of the membrane pool zone, the membrane pool zone is communicated with the liquid inlet end of the water outlet self-sucking pump through a water outlet pipeline, the water outlet self-sucking pump is communicated with the precision phosphorus removal zone through a pipeline, a carrier is arranged in the middle of the anoxic zone, a multifunctional nano composite material is carried in the carrier, a denitrification reflux pump is arranged in the aerobic zone and is communicated to the upper part of the anoxic zone through a denitrification reflux pipeline, an MBR flat plate membrane component is arranged in the membrane pool zone, an open carrying box is arranged in the precision phosphorus removal zone, the carrying box is internally provided with a plurality of layers of precision phosphorus removal nano particles, and the liquid outlet end of the water outlet self-sucking pump is communicated to the inner bottom of the carrying box through a pipeline, wherein:
the multifunctional nano composite material comprises the following components in parts by weight: removing 30-40 parts of COD materials, 5-10 parts of heavy metal materials, 10-20 parts of ammonia nitrogen materials, 10-20 parts of total nitrogen materials and 5-10 parts of total phosphorus materials;
the precision phosphorus removal nano-particles are selected from the precision phosphorus removal nano-materials provided by the invention.
Preferably, the particle size of each layer of precision phosphorus removal nano-particles in the loading box is increased from top to bottom in sequence.
Further, an aeration blower is arranged in the equipment area and is respectively communicated to the bottom of the anoxic area, the bottom of the aerobic area and the lower part of the MBR flat membrane module through pipelines.
Furthermore, the anoxic zone is provided with a water inlet which is positioned at one side of the lower part of the carrier far away from the aerobic zone; the water outlet pipeline is positioned above the MBR flat membrane component; the gas stripping reflux device is communicated to the bottom of the aerobic zone and the bottom of the membrane pool zone respectively; and a water outlet is formed in the upper part of the precision phosphorus removal area.
Preferably, the preparation method of the total nitrogen removal material comprises the following steps:
1) putting raw materials into a mixing roll, dry-mixing for 10-20 minutes, adding water 40-60 wt% of the raw materials, mixing for 10-30 minutes to obtain a mud block, wherein the raw materials comprise the following components in percentage by weight: 10-20% of clay with cloud length, 30-45% of loess in Pink countryside, 5-15% of quartz, 10-15% of kaolin, 10-30% of charcoal powder and 2-5% of methyl cellulose;
2) extruding and molding the mud blocks obtained in the step 1) to obtain particles with the particle size of 3-12 mm;
3) drying the particles obtained in the step 2) in a drying kiln until the water content is less than or equal to 3% to obtain dried particles;
4) heating the dried particles obtained in the step 3) to a firing temperature of 1050-1200 ℃ for firing for 0.5-1.5 hours after 1.5-2.5 hours, and air-cooling to obtain particles to be activated;
5) soaking the particles to be activated obtained in the step 4) in 2-4 wt% of nitric acid at 100-130 ℃ for 4-6 hours for activation, and drying after activation to obtain the total nitrogen removal material.
Specifically, the method comprises the following steps: the particle size of the clay with the cloud length is 200 to 325 meshes; the particle size of the Pingxiang loess is 200 to 325 meshes; the particle size of the quartz is 200 to 325 meshes; the particle size of the kaolin is 200 to 325 meshes; the particle size of the charcoal powder is 3000 to 3500 meshes; the methylcellulose has a particle size of 200 to 325 mesh.
Preferably, the material for removing COD is selected from any one of SAMMNS-CT03 nano ceramic material, SAMMNS-CT06 nano ceramic material or SAMMNS-CT016 nano ceramic material provided by the Gefeng environmental protection technology Co.
Preferably, the heavy metal removing material is any one selected from SAMMNS-MW200, SAMMNS-MWX01-R3 or SAMMNS-MWHg01-P200 provided by Gefeng environmental protection technology Co.
Preferably, the material for removing ammonia nitrogen is SAMMNS-NH1 ceramic nano material provided by Gefeng environmental protection technology Co.
Preferably, the total phosphorus removal material is selected from porous materials for removing total phosphorus in wastewater provided by Chinese patent 201410726467.4.
The multifunctional nano composite material used in the conventional power integrated sewage treatment equipment provided by the invention can be formed by different proportions and particle size grading according to different concentrations of pollutants in incoming water, has different particle size ranges of 3.0-12.0mm, and can be used for attachment growth of active microorganisms.
The precision phosphorus removal nano material used in the conventional power integrated sewage treatment equipment provided by the invention is of a multilayer three-dimensional structure formed by reasonable grading of different particle sizes. The precision phosphorus removal nano material is arranged in a carrying box according to a certain sequence, the particle size ranges of the precision phosphorus removal nano material are 1.0-12.0mm, water flow is lifted by a pump and then passes through an overload box from bottom to top, and the precision phosphorus removal nano material carries out high-precision interception and adsorption on solid and dissolved phosphorus in water.
The MBR flat membrane adopted by the conventional power integrated sewage treatment equipment provided by the invention is a structure formed by a modified hydrophilic PVDF material and an ABS material, the SRT and the HRT are thoroughly separated by a particle size screening principle, the adverse effect of sludge expansion is not considered, and the NTU (number of units) of effluent is always ensured to be less than or equal to 1; and the endogenous respiration and digestion of the sludge are caused by low-load aeration, so that the great reduction of the excess sludge is realized, and the sludge discharge period is extremely long.
The conventional power integration equipment provided by the invention has the following advantages:
1. the nano material system with reasonable grain size grading has extremely large specific surface area, and can be attached by high-concentration and high-activity microorganisms;
2. the biological compatibility is good, the special formula contains a large amount of trace elements, and the trace elements can be released for active microorganisms;
3. the material has high mechanical strength, good acid and alkali corrosion resistance and long service life;
4. the material has rich porosity, can adsorb a large amount of pollution factors such as organic matters and the like, and is regenerated and activated by the decomposition of microorganisms;
5. the abundant pore structures form anaerobic, anoxic and aerobic environments, so that different types of microorganisms can play a role in a synergistic manner;
6. different from the traditional materials, the complex compound of COD, heavy metals, ammonia nitrogen, total nitrogen and total phosphorus adsorption degradation materials can greatly enhance the removal capability of the whole system to pollution factors;
7. the precision phosphorus removal nanometer base material can effectively solve the phosphorus removal defect of the traditional biological method, and can carry out high-precision adsorption on the residual phosphorus, especially the dissolved phosphorus, so as to ensure the elimination of the point source eutrophication risk; the service cycle is long, and the product can be regenerated and activated after replacement and can be used for multiple times;
8. an MBR flat membrane structure is adopted, a secondary sedimentation tank is not needed, the activated sludge concentration is high, the impact load resistance is strong, and the effluent transparency is high;
9. the membrane separation blocks most pathogenic microorganisms in the system, so that the dosage and contact time of the subsequent disinfectant are effectively reduced;
10. the volume load is high, the reaction rate is high, the occupied area is small, the transportation is flexible, a gas stripping reflux device is adopted, the power equipment is saved, and the operation cost is low;
11. the method essentially belongs to the category of biomembrane method and membrane bioreactor, greatly reduces the output of residual sludge, has extremely long sludge discharge period and low disposal cost.
According to the conventional power integrated sewage treatment system, on one hand, a high-concentration and high-activity microbial population can be attached to the composite efficient biological carrier at the front end of the system, so that the impact resistance of the system is effectively improved, on the other hand, a large amount of pollution factors such as COD (chemical oxygen demand), ammonia nitrogen, total nitrogen, heavy metals, total phosphorus and the like can be adsorbed through the characteristics of the nano material, and the treatment effect of the system is enhanced; the MBR flat membrane system in the middle part can ensure longer sludge age on the one hand, ensure that nitrifying bacteria and other strains with long generation time can play a role stably and efficiently for a long time, ensure that the NTU of the effluent is less than or equal to 1, and greatly reduce the output of the residual sludge through endogenous respiration on the other hand, and reduce the content of pathogenic microorganisms in the effluent; the precision phosphorus removal nanometer substrate at the rear end carries out precision adsorption removal on residual phosphorus in the incoming water, particularly the phosphorus in a dissolved state, and thoroughly eliminates the pollution risk of point source eutrophication. The conventional power integrated treatment equipment is used for treating domestic sewage of villages and towns and sewage of general towns, the removal rate of COD is more than or equal to 95%, the removal rate of SS is more than or equal to 99%, the removal rate of heavy metal is more than or equal to 98%, the removal rate of phosphorus and nitrogen is more than 97%, the effluent index can stably reach the national standard first-level A standard, and the indexes of COD, ammonia nitrogen, SS and phosphorus pollutants are superior to the first-level A standard; and the power consumption of system matching equipment is low when the power-saving device is used in combination with efficient nano materials, and the operating cost is reduced by 12 percent compared with that of the conventional power integrated equipment.
Drawings
FIG. 1 is a structural view of a conventional power integration sewage treatment apparatus provided by the present invention.
In fig. 1, the structure represented by each reference numeral is listed as follows:
1. anoxic zone, 2, aerobic zone, 3, membrane pool zone, 4, equipment zone, 5, precision dephosphorization zone, 6, water inlet, 7, delivery port, 8, carrier, 9, carrying case, 10, MBR flat membrane module, 11, denitrification reflux pump, 12, water outlet self-priming pump, 13, aeration blower, 14, equipment maintenance port, 15, air stripping reflux unit, 16, partition board, 17, outlet pipeline.
Detailed Description
The principles and features of this invention are described below in conjunction with examples which are set forth to illustrate, but are not to be construed to limit the scope of the invention.
In a specific embodiment, as shown in fig. 1, a conventional power integrated sewage treatment device comprises an anoxic zone 1, an aerobic zone 2, a membrane pool zone 3, a device zone 4 and a precision dephosphorization zone 5 which are communicated in sequence, wherein a water outlet self-sucking pump 12 is arranged in the device zone 4.
The upper portion of anoxic zone 1 and the upper portion intercommunication of aerobic zone 2, the lower part of aerobic zone 2 and the lower part intercommunication of membrane pond district 3, membrane pond district 3 passes through outlet pipe way 17 intercommunication with the income liquid end of play water self priming pump 12, and play water self priming pump 12 and precision remove phosphorus district 5 and pass through the pipeline intercommunication.
A carrier 8 is arranged in the middle of the anoxic zone 1, and the multifunctional nano composite material is loaded in the carrier 8. A denitrification return pump 11 is arranged in the aerobic zone 2, and the denitrification return pump 11 is communicated to the upper part of the anoxic zone 1 through a denitrification return pipeline. An MBR flat membrane module 10 is arranged in the membrane pool area 3, an open carrying box 9 is arranged in the precision phosphorus removal area 5, a plurality of layers of precision phosphorus removal nano-particles are arranged in the carrying box 9, and the liquid outlet end of the water outlet self-sucking pump 12 is communicated to the inner bottom of the carrying box 9 through a pipeline.
An aeration blower 13 is arranged in the equipment area 4, and the aeration blower 13 is respectively communicated to the bottom of the anoxic area 1, the bottom of the aerobic area 2 and the lower part of the MBR flat membrane component 10 through pipelines.
The anoxic zone 1 is provided with a water inlet 6, and the water inlet 6 is positioned on one side, far away from the aerobic zone 2, below the carrier 8; the water outlet pipeline 17 is positioned above the MBR flat membrane module 10; the device is also provided with a gas stripping reflux device 15, and the gas stripping reflux device 15 is respectively communicated to the bottom of the aerobic zone 2 and the bottom of the membrane pool zone 3; the upper part of the precision phosphorus removal area 5 is provided with a water outlet 7. The upper part of the equipment can be provided with an equipment access opening 14. The functional zones in the device may be distinguished by a partition 16.
Example 1
1) Putting 35 parts of montmorillonite, 45 parts of bentonite and 20 parts of activated clay into a high-speed mixer for mixing to obtain dry mixture, wherein the fineness of the montmorillonite is below 5 microns, and the purity is above 98%; the fineness of the bentonite is below 10 microns, and the purity is above 95%; the fineness of the activated clay is below 8 microns, and the purity is above 95%;
2) mixing a 20% calcium acetate solution with the dry mixture obtained in the step 1) according to a ratio of 0.3: 1, carrying out wet mixing, and pugging after the wet mixing, wherein the pugging time is 25 minutes, so as to obtain mud blocks;
3) extruding the mud blocks obtained in the step 2) to form particles, wherein the particle size of the particles is 8 mm;
4) drying the particles obtained in the step 3) in a drying kiln to obtain a dried molding product with the water content of less than 8%;
5) heating the dried formed product obtained in the step 4) to the sintering temperature of 775 ℃ for 1 hour, and sintering for 1 hour to obtain the precision phosphorus removal nano material 1.
Example 2
1) Putting 20 parts of montmorillonite, 60 parts of bentonite and 10 parts of activated clay into a high-speed mixer for mixing to obtain dry mixture, wherein the fineness of the montmorillonite is below 5 microns, and the purity is above 98%; the fineness of the bentonite is below 10 microns, and the purity is above 95%; the fineness of the activated clay is below 8 microns, and the purity is above 95%;
2) mixing a 22% calcium acetate solution with the dry mixture obtained in the step 1) according to a ratio of 0.2: 1, carrying out wet mixing, and pugging after the wet mixing for 30 minutes to obtain mud blocks;
3) extruding the mud blocks obtained in the step 2) to form particles, wherein the particle size of the particles is 3 mm;
4) drying the particles obtained in the step 3) in a drying kiln to obtain a dried molding product with the water content of less than 8%;
5) heating the dried formed product obtained in the step 4) to the sintering temperature of 700 ℃ for 1.5 hours, and sintering for 1.5 hours to obtain the precision phosphorus removal nano material 2.
Example 3
1) Putting 50 parts of montmorillonite, 30 parts of bentonite and 30 parts of activated clay into a high-speed mixer for mixing to obtain dry mixture, wherein the fineness of the montmorillonite is below 5 microns, and the purity is above 98%; the fineness of the bentonite is below 10 microns, and the purity is above 95%; the fineness of the activated clay is below 8 microns, and the purity is above 95%;
2) mixing an 18% calcium acetate solution with the dry mixture obtained in the step 1) according to a ratio of 0.4: 1, carrying out wet mixing, and pugging after the wet mixing, wherein the pugging time is 20 minutes, so as to obtain mud blocks;
3) extruding the mud blocks obtained in the step 2) to form particles, wherein the particle size of the particles is 12 mm;
4) drying the particles obtained in the step 3) in a drying kiln to obtain a dried molding product with the water content of less than 8%;
5) heating the dried formed product obtained in the step 4) to the sintering temperature of 700 ℃ for 1.5 hours after 0.5 hour to obtain the precision phosphorus removal nano material 3.
Example 4
1) Putting raw materials into a mixing mill, dry-mixing for 15 minutes, adding 50 wt% of water into the raw materials, and mixing for 20 minutes to obtain a mud block, wherein the raw materials comprise the following components in percentage by weight: 15% of clay with long cloud size, 39% of loess, 10% of quartz, 12% of kaolin, 20% of charcoal powder and 4% of methyl cellulose, wherein the particle size of the clay with long cloud size is about 260 meshes; the particle size of the Pingxiang loess is about 260 meshes; the particle size of the quartz is about 250 meshes; the particle size of the kaolin is about 250 meshes; the particle size of the charcoal powder is about 3200 meshes; the particle size of the methyl cellulose is about 250 meshes;
2) extruding and molding the mud blocks obtained in the step 1) to obtain particles with the particle size of 8 mm;
3) drying the particles obtained in the step 2) in a drying kiln until the water content is less than or equal to 3% to obtain dried particles;
4) heating the dried particles obtained in the step 3) to the sintering temperature of 1100 ℃ for 2 hours, sintering for 1 hour, and air-cooling to obtain particles to be activated;
5) soaking the particles to be activated obtained in the step 4) in 3 wt% nitric acid at 115 ℃ for 5 hours for activation, and drying after activation to obtain the total nitrogen removal material 1.
Example 5
1) Putting raw materials into a mixing roll, dry-mixing for 10 minutes, adding 60 wt% of water into the raw materials, mixing for 30 minutes to obtain a mud block, wherein the raw materials comprise the following components in percentage by weight: 18% of clay with long cloud size, 30% of loess, 15% of quartz, 10% of kaolin, 25% of charcoal powder and 2% of methyl cellulose, wherein the particle size of the clay with long cloud size is 325 meshes; the particle size of the Pingxiang loess is 200; the particle size of the quartz is 325 meshes; the particle size of the kaolin is 200; the particle size of the charcoal powder is 3500 meshes; the particle size of the methylcellulose is 200;
2) extruding and molding the mud blocks obtained in the step 1) to obtain particles with the particle size of 12 mm;
3) drying the particles obtained in the step 2) in a drying kiln until the water content is less than or equal to 3% to obtain dried particles;
4) heating the dried particles obtained in the step 3) to the sintering temperature of 1200 ℃ for sintering for 0.5 hour after 1.5 hours, and air-cooling to obtain particles to be activated;
5) soaking the particles to be activated obtained in the step 4) in 4 wt% nitric acid at 100 ℃ for 6 hours for activation, and drying after activation to obtain the total nitrogen removal material 2.
Example 6
1) Putting raw materials into a mixing roll, dry-mixing for 20 minutes, adding water with the weight percent of 40 percent of the raw materials, mixing for 10 minutes to obtain a mud block, wherein the raw materials comprise the following components in percentage by weight: 10% of clay with long cloud length, 45% of loess, 10% of quartz, 15% of kaolin, 15% of charcoal powder and 5% of methyl cellulose, wherein the particle size of the clay with long cloud length is 200%; the particle size of the Pingxiang loess is 325 meshes; the particle size of the quartz is 200 meshes; the particle size of the kaolin is 325 meshes; the particle size of the charcoal powder is 3000 meshes; the particle size of the methyl cellulose is 325 meshes;
2) extruding and molding the mud blocks obtained in the step 1) to obtain particles with the particle size of 3 mm;
3) drying the particles obtained in the step 2) in a drying kiln until the water content is less than or equal to 3% to obtain dried particles;
4) heating the dried particles obtained in the step 3) to a sintering temperature of 1050 ℃ for sintering for 1.5 hours after 2.5 hours, and air-cooling to obtain particles to be activated;
5) soaking the particles to be activated obtained in the step 4) in 2 wt% nitric acid at 130 ℃ for 4 hours for activation, and drying after activation to obtain the total nitrogen removal material 3.
Effect example 1
The conventional power integrated sewage treatment equipment provided by the invention is prepared from the following materials:
the selected multifunctional nano composite material comprises the following components in parts by weight: removing 40 parts of COD material, 5 parts of heavy metal material, 20 parts of ammonia nitrogen material, 10 parts of total nitrogen material and 10 parts of total phosphorus material;
the COD removing material is selected from SAMMNS-CT03 nano ceramic material;
the heavy metal removal material is selected from SAMMNS-MW 200;
the ammonia nitrogen removal material is SAMMNS-NH1 ceramic nano material;
the total nitrogen removal material is the total nitrogen removal material provided in example 4;
the total phosphorus removal material is selected from porous materials for removing total phosphorus in wastewater provided by Chinese patent 201410726467.4.
Precision phosphorus removal nanoparticles the precision phosphorus removal nanomaterial provided in example 1.
The particle size of each layer of precision phosphorus removal nano-particles in the loading box is gradually increased from 3mm to 8mm from top to bottom.
Water inflow index: COD less than or equal to 350ppm and Pb2+≤0.3ppm、NH3+≤25ppm、TN≤40ppm、TP≤3.5ppm、SS≤150ppm；
The effluent index is as follows: COD less than or equal to 17ppm and Pb2+≤0.006ppm、NH3+≤0.75ppm、TN≤1.2ppm、TP≤0.1ppm、SS≤1ppm。
According to various effluent indexes, after the sewage is treated by the conventional power integrated sewage treatment equipment, most of pollution factors in the sewage are removed, and indexes of COD, lead, ammonia nitrogen, total phosphorus and SS of the effluent are comprehensively superior to those of GB18918-2002 first-grade A standard, and can be completely and directly discharged.
Effect example 2
The conventional power integrated sewage treatment equipment provided by the invention is prepared from the following materials:
the selected multifunctional nano composite material comprises the following components in parts by weight: removing 30 parts of COD material, 10 parts of heavy metal material, 10 parts of ammonia nitrogen material, 20 parts of total nitrogen material and 5 parts of total phosphorus material;
the COD removing material is selected from SAMMNS-CT06 nano ceramic material;
the heavy metal removing material is selected from SAMMNS-MWX 01-R3;
the ammonia nitrogen removal material is SAMMNS-NH1 ceramic nano material;
the total nitrogen removal material is the total nitrogen removal material provided in example 5;
the total phosphorus removal material is selected from porous materials for removing total phosphorus in wastewater provided by Chinese patent 201410726467.4.
Precision phosphorus removal nanoparticles the precision phosphorus removal nanomaterial provided in example 2.
The particle size of each layer of precision phosphorus removal nano-particles in the loading box is gradually increased from 3mm to 9mm from top to bottom.
Water inflow index: COD less than or equal to 250ppm and Cr3+≤0.5ppm、NH3+≤15ppm、TN≤35ppm、TP≤2.5ppm、SS≤120ppm；
The effluent index is as follows: COD less than or equal to 12ppm and Cr3+≤0.01ppm、NH3+≤0.45ppm、TN≤1ppm、TP≤0.075ppm、SS≤1ppm。
According to various effluent indexes, most of pollution factors in the sewage are removed after the sewage is treated by the conventional power integrated sewage treatment equipment, and indexes of COD, chromium, ammonia nitrogen, total phosphorus and SS of the effluent are comprehensively superior to those of GB18918-2002 first-grade A standard, and can be completely and directly discharged.
Effect example 3
The conventional power integrated sewage treatment equipment provided by the invention is prepared from the following materials:
the selected multifunctional nano composite material comprises the following components in parts by weight: removing 35 parts of COD material, 8 parts of heavy metal material, 15 parts of ammonia nitrogen material, 15 parts of total nitrogen material and 8 parts of total phosphorus material;
the material except COD is selected from SAMMNS-CT016 nano ceramic material;
the heavy metal removing material is selected from SAMMNS-MWHg 01-P200;
the ammonia nitrogen removal material is SAMMNS-NH1 ceramic nano material;
the total nitrogen removal material is the total nitrogen removal material provided in example 6;
the total phosphorus removal material is selected from porous materials for removing total phosphorus in wastewater provided by Chinese patent 201410726467.4.
Precision phosphorus removal nanoparticles the precision phosphorus removal nanomaterial provided in example 3.
The particle size of each layer of precision phosphorus removal nano-particles in the loading box is gradually increased from 3mm to 10mm from top to bottom.
Water inflow index: COD less than or equal to 180ppm and Hg2+≤0.4ppm、NH3+≤20ppm、TN≤33ppm、TP≤1.9ppm、SS≤210ppm；
The effluent index is as follows: COD less than or equal to 9ppm and Hg2+≤0.008ppm、NH3+≤0.6ppm、TN≤1ppm、TP≤0.057ppm、SS≤1ppm。
According to various effluent indexes, after the sewage is treated by the conventional power integrated sewage treatment equipment, most of pollution factors in the sewage are removed, and various indexes of effluent COD, mercury, ammonia nitrogen, total phosphorus and SS are comprehensively superior to GB18918-2002 first-class A standard and can be completely and directly discharged. In the operation of the equipment, the sludge expansion phenomenon appears in the aerobic section, but due to the high-efficiency interception effect of the MBR flat membrane, the NTU of the effluent is always kept to be less than or equal to 1, the adverse effect of the sludge expansion is completely eliminated, and the normal and stable operation of the equipment is ensured.
Generally, according to data obtained by field actual detection, the conventional power integrated treatment system can obviously improve the removal efficiency of pollution factors such as COD, ammonia nitrogen, total phosphorus, heavy metals, SS and the like of incoming water, the removal efficiency is respectively more than or equal to 95%, 97%, 98% and 99%, the effluent index is superior to the national first-class A standard, and in 10 months of field operation, the residual sludge is very little and is discharged only once by using a dung suction truck; the terminal precision dephosphorization nanometer substrate is externally regenerated once only, and the service life is long.
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, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (4)

1. The utility model provides a conventional power integration sewage treatment device which characterized in that: the device comprises an anoxic zone (1), an aerobic zone (2), a membrane pool zone (3), a device zone (4) and a precision phosphorus removal zone (5) which are sequentially communicated, wherein a water outlet self-sucking pump (12) is arranged in the device zone (4), the upper part of the anoxic zone (1) is communicated with the upper part of the aerobic zone (2), the lower part of the aerobic zone (2) is communicated with the lower part of the membrane pool zone (3), the membrane pool zone (3) is communicated with the liquid inlet end of the water outlet self-sucking pump (12) through a water outlet pipeline (17), the water outlet self-sucking pump (12) is communicated with the precision phosphorus removal zone (5) through a pipeline, a carrier (8) is arranged in the middle part of the anoxic zone (1), a multifunctional nano composite material is loaded in the carrier (8), a denitrification reflux pump (11) is arranged in the aerobic zone (2), and the denitrification reflux pump (11) is communicated to the upper part of the anoxic zone (1) through a denitrification reflux pipeline, an MBR flat membrane module (10) is arranged in the membrane pool area (3), an open carrying box (9) is arranged in the precision phosphorus removal area (5), multiple layers of precision phosphorus removal nano-particles are arranged in the carrying box (9), and the liquid outlet end of the water outlet self-sucking pump (12) is communicated to the inner bottom of the carrying box (9) through a pipeline, wherein:
the multifunctional nano composite material comprises the following components in parts by weight: removing 30-40 parts of COD materials, 5-10 parts of heavy metal materials, 10-20 parts of ammonia nitrogen materials, 10-20 parts of total nitrogen materials and 5-10 parts of total phosphorus materials;
the preparation method of the precision phosphorus removal nano material comprises the following steps:
1) putting 20-50 parts of montmorillonite, 30-60 parts of bentonite and 10-30 parts of activated clay into a high-speed mixer for mixing to obtain dry mixed materials;
2) mixing 18-22% of calcium acetate solution with the dry mixture obtained in the step 1) according to the weight ratio of 0.2-0.4: 1, wet mixing, and pugging to obtain mud blocks;
3) extruding and molding the mud blocks obtained in the step 2) into particles;
4) drying the particles obtained in the step 3) in a drying kiln to obtain a dry formed product;
5) heating the dried formed product obtained in the step 4) for 0.5-1.5 hours to a firing temperature of 700-850 ℃ for firing for 0.5-1.5 hours to obtain a precision phosphorus removal nano material;
the preparation method of the total nitrogen removal material comprises the following steps:
1) putting raw materials into a mixing roll, dry-mixing for 10-20 minutes, adding water 40-60 wt% of the raw materials, mixing for 10-30 minutes to obtain a mud block, wherein the raw materials comprise the following components in percentage by weight: 10-20% of clay with cloud length, 30-45% of loess in Pink countryside, 5-15% of quartz, 10-15% of kaolin, 10-30% of charcoal powder and 2-5% of methyl cellulose;
2) extruding and molding the mud blocks obtained in the step 1) to obtain particles with the particle size of 3-12 mm;
3) drying the particles obtained in the step 2) in a drying kiln until the water content is less than or equal to 3% to obtain dried particles;
4) heating the dried particles obtained in the step 3) to a firing temperature of 1050-1200 ℃ for firing for 0.5-1.5 hours after 1.5-2.5 hours, and air-cooling to obtain particles to be activated;
5) soaking the particles to be activated obtained in the step 4) in 2-4 wt% of nitric acid at 100-130 ℃ for 4-6 hours for activation, and drying after activation to obtain the total nitrogen removal material;
the COD removing material is selected from any one of SAMMNS-CT03 nano ceramic materials produced by the Gefeng environmental protection technology Co., Ltd, SAMMNS-CT06 nano ceramic materials produced by the Gefeng environmental protection technology Co., Ltd or SAMMNS-CT016 nano ceramic materials produced by the Gefeng environmental protection technology Co., Ltd;
the heavy metal removing material is selected from any one of SAMMNS-MW200 produced by Gefeng environmental protection technology Co., Ltd, SAMMNS-MWX01-R3 produced by Gefeng environmental protection technology Co., Ltd or SAMMNS-MWHg01-P200 produced by Gefeng environmental protection technology Co., Ltd;
the ammonia nitrogen removal material is SAMMNS-NH1 ceramic nano material produced by Gefeng environmental protection science and technology limited;
the total phosphorus removal material is selected from a porous material for removing total phosphorus in wastewater provided by Chinese patent 201410726467.4;
the particle size of each layer of precision phosphorus removal nano-particles in the carrying box (9) is sequentially increased from top to bottom, and the particle size range of each layer of precision phosphorus removal nano-particles is 3.0-12.0 mm;
the anoxic zone (1) is provided with a water inlet (6), and the water inlet (6) is positioned on one side, far away from the aerobic zone (2), below the carrier (8); the water outlet pipeline (17) is positioned above the MBR flat membrane module (10); the device is also provided with a gas stripping reflux device (15), and the gas stripping reflux device (15) is respectively communicated to the bottom of the aerobic zone (2) and the bottom of the membrane pool zone (3); and a water outlet (7) is formed in the upper part of the precision phosphorus removal area (5).
2. The conventional power integrated sewage treatment plant according to claim 1, wherein: an aeration blower (13) is arranged in the equipment area (4), and the aeration blower (13) is respectively communicated to the bottom of the anoxic area (1), the bottom of the aerobic area (2) and the lower part of the MBR flat membrane component (10) through pipelines.
3. The conventional power integrated sewage treatment plant of claim 1 wherein of the raw materials:
the particle size of the clay with the cloud length is 200 to 325 meshes; the particle size of the Pingxiang loess is 200 to 325 meshes; the particle size of the quartz is 200 to 325 meshes; the particle size of the kaolin is 200 to 325 meshes; the particle size of the charcoal powder is 3000 to 3500 meshes; the methylcellulose has a particle size of 200 to 325 mesh.
4. The conventional power integrated sewage treatment plant according to claim 1, wherein:
in step 1): the fineness of the montmorillonite is below 5 microns, and the purity is more than 98%; the fineness of the bentonite is below 10 microns, and the purity is above 95%; the fineness of the activated clay is below 8 microns, and the purity is above 95%;
in the step 2), the pugging time is 20-30 minutes;
in the step 3), the particle size of the particles is 3-12 mm;
in the step 4), the water content of the dried molded product is less than 8%.
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