CN211226526U

CN211226526U - Modified carbon fiber filler sewage treatment plant

Info

Publication number: CN211226526U
Application number: CN201921985429.5U
Authority: CN
Inventors: 高贵平
Original assignee: Guizhou Tongyong Water Conservancy Technology Development Co ltd
Current assignee: Guizhou Tongyong Water Conservancy Technology Development Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-08-11
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a modified carbon fiber filler sewage treatment plant, including packing bucket (1) and biological filter (2) packing bucket (1) in built-in have polyacrylonitrile base modified carbon fiber filler (3) biological filter (2) in fill with rubble, sand and soil, through the pipe connection between packing bucket (1) and biological filter (2). The utility model relates to an utilize microorganism adhesion of Polyacrylonitrile (PAN) base modified carbon fiber to carry out the new technology of handling sewage, it is little to have the input, with low costs, area is few, characteristics such as daily management and protection are simple, need not to build pipe network system and concentrate sewage, but carry out distributed processing to single family or several families, can solve rural sewage treatment problem through establishing miniaturization, the decentralized, low cost, unpowered sewage treatment facility, can compensate rural integration equipment and constructed wetland processing system's not enough, be applicable to rural sewage treatment.

Description

Modified carbon fiber filler sewage treatment plant

Technical Field

The utility model relates to a sewage treatment plant, especially a modified carbon fiber filler sewage treatment plant belongs to sewage treatment device technical field.

Background

For rural domestic sewage treatment, mature technologies are not few, and for example, the sewage is collected and treated by the integrated treatment equipment, and the standard discharge is not problematic. However, the integrated plant process must simultaneously satisfy several conditions: firstly, a sewage collecting pipe network system is needed, and a considerable part of investment is needed for building a sewage collecting pipe network. Secondly, operation and maintenance need electric energy, and electricity consumption needs to pay electricity charge; and thirdly, special management and maintenance are needed, the reward is needed to be paid, and if the capital needed for building the sewage station is supported by the national special capital, the construction is not problematic. The operation and maintenance cost is borne by anyone, and according to the current system, the operation and maintenance cost is not paid by the special money for all levels of finance, so that only farmers collect the cost to bear, but the collection of the cost for the farmers is not practical, so that the rural sewage treatment station is built and cannot be used. After a period of time, the sewage treatment station becomes a decoration, the purposes of treating sewage and improving and protecting the environment cannot be achieved, and as the artificial wetland treatment method, the time-sharing standard-reaching discharge can be realized, but the influence of the temperature is serious, the artificial wetland treatment system needs a large area of land as a carrier, the investment and construction cost is high, malodorous gas is generated when the management and the protection are not good, the water pollution is converted into gas pollution, and the purposes of treating sewage, improving and protecting the environment cannot be achieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a modified carbon fiber filler sewage treatment plant is provided, have drop into little, area is few, dispersion type, with low costs, the simple characteristics of daily management and protection to overcome above-mentioned prior art not enough.

In order to solve the technical problem, the technical scheme of the utility model as follows:

the utility model provides a modified carbon fiber filler sewage treatment plant, includes packing bucket and biological filter the packing bucket in built-in modified carbon fiber filler of polyacrylonitrile group that has the biological filter in fill with rubble, sand and soil, pass through the pipe connection between packing bucket and the biological filter.

As a preferred scheme, the modified carbon fiber filler sewage treatment device is characterized in that the biological filter is divided into three layers from bottom to top, the bottommost part of the biological filter is a water permeable layer, gravels are placed in the water permeable layer, the particle size of each gravel is 1-2cm, and the thickness of the water permeable layer is 10-15 cm; the second floor is for protecting water the layer, and it has the mixed filler of sand and soil to fill in the water-retaining layer, and sand and soil are according to 2: 1, and the thickness of the water-retaining layer is 40-60 cm; the third layer is a soil layer with the thickness of 40-50 cm.

In the modified carbon fiber filler sewage treatment device, plants are planted at the top of the biological filter.

According to the modified carbon fiber filler sewage treatment device, the movable cover is arranged above the filler barrel, and the lifting handle is arranged on the movable cover.

In the sewage treatment device with the modified carbon fiber filler, the filler barrel is a glass fiber reinforced plastic product or a high-quality plastic product or a brick structure; the biological filter is a brick structure.

The modified carbon fiber filler sewage treatment device further comprises a filter vat as an optimal scheme, and a sewage filter screen bucket is installed in the filter vat.

The utility model has the advantages that: compared with the prior art, the utility model relates to a novel technology for treating sewage by utilizing the microbial adhesiveness of Polyacrylonitrile (PAN) -based modified carbon fiber. Compare with traditional sewage treatment station, three kinds of sewage treatment methods of traditional integration treatment facility and constructed wetland purification, the utility model discloses a technical path is different from preceding three kinds of methods, the utility model discloses need not to build pipe network system centralized sewage, but carry out distributed processing to single family or several families, can solve rural sewage treatment problem through establishing miniaturized, decentralized, low cost, unpowered treatment facility, can compensate rural integration equipment and constructed wetland treatment system's not enough, be applicable to rural treatment of domestic sewage, be the use technique that a peasant also used up, it manages and maintains by oneself to deliver villager after system construction accomplishes, responsibility to the family, let vast villager initiative, participate in the environmental protection, alleviate the operating pressure of each grade department of government effectively.

The utility model discloses can effectively get rid of micro pollution factor such as aquatic COD, BOD, ammonia, nitrogen, PH, SS, colourity, stink, the clearance can reach more than 90% to make sewage become clear, colourless, tasteless, the quality of water after the processing reaches "sewage integrated discharge standard" (GB 18918-2002) one-level B standard, can directly discharge into in the ditch river. The utility model has the characteristics of small investment, small occupied area (relative wetland purification mode), simple daily management and protection, home environment beautification and the like, does not need large-scale pipe network construction, occupies less land, and can be used for construction according to local conditions without land acquisition; the unit dosage is small, the price is low, the engineering investment is far lower than the national standard, and the economic advantage is obvious; the ecological energy-saving ecological energy-.

The utility model discloses a main application scope:

1. the domestic sewage discharge condition is serious, and the network management is inconvenient to lay and collect sewage to perform centralized treatment on villages and towns and scattered residents, in particular to villages for test point demonstration such as rural environment treatment, toilet revolution, rural revivification and the like.

2. Villages and dispersed residents, which are closer to the river, especially to the drinking water source, but do not enter the sewerage network, are the focus of the treatment scope.

3. Farmhouse entertainment, tourist sites and hotels without entering a sewage discharge pipe network are also the key points of sewage treatment in the patent. 4. The urban sewage pipe network has no covered area and dead angle, the cost for building the pipe network can be reduced by adopting the method, and the method is an effective supplementary scheme for treating the urban black and odorous water body. 5. The original sewage treatment facilities for purifying the artificial wetland, particularly the waste facilities, can be modified by adopting the method.

6. Livestock and poultry breeding wastewater discharge can be treated by adding electric power or relevant links of micro-electric power on the basis of the method.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Detailed Description

Example 1: as shown in fig. 1, the biological filter comprises a stuffing barrel 1 and a biological filter 2, wherein the stuffing barrel 1 is made of glass fiber reinforced plastic (or made of high-quality plastic or made of brick structures), and the biological filter 2 is made of brick structures. A plurality of polyacrylonitrile-based modified carbon fiber fillers 3 are arranged in the filler barrel 1, the fillers are in a shape of bionic grass, and broken stones, sand and soil are filled in the biological filter 2. The filler barrel 1 and the biological filter 2 are connected through a pipeline. The top of the biological filter 2 is planted with the plant 4, the variety of the plant 4 can be selected according to the preference of self, the flower is selected for planting when the flower is favored, the fruit tree is planted when the fruit is favored (the large fruit tree can not be selected), and the vegetable is planted when the vegetable is favored. Plants planted at the top of the biological filter 2 do not need to be fertilized, otherwise, the nutrition is excessive. The biological filter 2 is divided into three layers from bottom to top, the bottommost part is a water permeable layer 6, broken stones are placed in the water permeable layer, the particle size of the broken stones is 1-2cm, and the thickness of the water permeable layer is 10 cm; the second floor is for protecting water layer 7, and it has the mixed filler of sand and soil to fill in water layer 7, and sand and soil are according to 2: 1, and the thickness of the water retention layer 7 is 50 cm; the third layer is a soil layer 8 with a thickness of 40 cm. Permeable bed 6 and 7 divisions on guarantor's water layer, the four sides are screeded with cement mortar, and the bottom is handled with high-grade cement mortar, prevents that the sewage seepage from polluting groundwater, 8 outer wall tiles on soil horizon. The sewage treatment device also comprises a filter barrel 5, wherein the filter barrel 5 is connected with the sewage inlet, and a sewage filter screen bucket is arranged in the filter barrel 5 and used for removing floating objects and particle impurities in the sewage. A movable cover is arranged above the filling barrel 1, and a handle is arranged on the movable cover. The movable cover is covered on the packing barrel 1 immovably at ordinary times, the movable cover is uncovered when Polyacrylonitrile (PAN) -based modified carbon fibers need to be cleaned, the Polyacrylonitrile (PAN) -based modified carbon fibers are taken out for cleaning, the Polyacrylonitrile (PAN) -based modified carbon fibers are placed back into the packing barrel 1 according to the original shape after cleaning, and the movable cover is covered.

During construction, the filling barrel 1 is placed rightIn the square pool, the pool is arranged at a sewage inlet and is lower than the sewage inlet by about 1m, the four sides and the bottom of the pool are all pasted with ceramic tiles, and a movable reinforced concrete cover plate is arranged above the filling barrel 1. The height difference between the water inlet of the filling barrel 1 and the outlet of the biological filter 2 is set to be 15-30 cm, so that water can be conveniently discharged. The quantity of the filling barrels 1 can be set to be a plurality according to the requirement, and the charging barrels 1 are connected through water conveying pipelines. The polyacrylonitrile-based modified carbon fiber used in the patent is prepared by performing surface modification treatment on polyacrylonitrile carbon fiber to obtain specific surface area larger than 1000m²The preparation process of the novel polyacrylonitrile-based modified carbon fiber comprises the following steps: (1) pre-oxidation treatment: carrying out pre-oxidation treatment on polyacrylonitrile fibers in a six-temperature-zone pre-oxidation furnace, wherein the selected polyacrylonitrile fibers are obtained by binary polymerization or ternary polymerization reaction and wet spinning or dry-jet wet spinning technology, the temperature of each temperature zone in the six-temperature-zone pre-oxidation furnace is 150 ℃, 180 ℃, 210 ℃, 240 ℃, 250 ℃ and 260 ℃, and the pre-oxidation treatment time is 120 min. (2) Carbonizing treatment: carbonizing the pre-oxidized polyacrylonitrile fiber in a four-temperature-zone carbonization furnace, wherein the temperature of each temperature zone in the four-temperature-zone carbonization furnace is 600 ℃, 800 ℃, 1000 ℃ and 1100 ℃, and the carbonizing treatment time is 10 min. (3) Surface activation treatment: and carrying out surface activation treatment on the carbonized fiber for 5min by an active modification method to prepare the novel polyacrylonitrile-based modified carbon fiber. The activity modification method in the step (3) comprises the following steps: taking a graphite plate as an anode and polyacrylonitrile fibers prepared in the step (2) as a cathode, and carrying out active treatment on the polyacrylonitrile fibers in an electrified state in an electrolyte solution, wherein the current density is 0-30A/m². Wherein the electrolyte solution is an acidic electrolyte or an alkaline electrolyte or a neutral electrolyte, and the acidic electrolyte is any one of phosphoric acid, nitric acid, sulfuric acid and boric acid; the alkaline electrolyte is any one of sodium hydroxide, potassium hydroxide, calcium hydroxide, magnesium hydroxide, barium hydroxide, potassium phosphate, monopotassium phosphate, potassium dihydrogen phosphate, sodium phosphate and sodium dihydrogen phosphate; the neutral electrolyte is any one of ammonium phosphate, ammonium carbonate, ammonium bicarbonate, ammonium nitrate, ammonium sulfate and ammonium persulfate.

The good and bad sewage treatment effect depends on the surface structure of the material to a great extent, and the applicant finds that the novel Polyacrylonitrile (PAN) -based modified carbon fiber obtained by surface modification of Polyacrylonitrile (PAN) carbon fiber is an excellent novel microorganism immobilization carrier which has the advantages of good biocompatibility, high immobilization speed, large immobilization amount, microbial decomposition and chemical corrosion resistance, strong regeneration capacity, excellent compatibility, large specific surface area, high adsorption rate, high desorption performance, large treatment capacity, long service cycle and the like, has good wettability and bacterium carrying capacity, can provide habitat for microorganisms under the condition of not blowing air, and microorganisms can decompose by taking soluble organic matters in water as food materials, thereby purifying the waste water and being particularly suitable for sewage purification. And simultaneously, the utility model discloses increase the link that the plant was planted in the system, the absorption effect of performance plant to organic matter nutrient has further strengthened sewage purification effect.

Compare as sewage treatment filler with other, the utility model discloses a novel polyacrylonitrile base modified carbon fiber has advantages such as high porosity, high adsorption efficiency, easy biofilm formation, mainly embodies following several:

(1) the specific surface area of the material is more than 1000m²And g, the sewage purification effect is high. The special shape of the composite material has huge specific surface area, abundant micropores and various functional groups, so the composite material has higher adsorbability, can effectively remove the color, smell and the like of wastewater, can remove refractory substances, and has the ammonia nitrogen removal rate of more than 90 percent by matching with an aerobic process.

(2) The microorganism is fast in biofilm formation, and the aged biofilm is easy to fall off. The novel polyacrylonitrile-based modified carbon fiber is not easy to pulverize, cannot become loose or is excessively dense under the vibration condition, and the biofilm formation speed is high due to the form of the bionic grass, so that the biofilm formation can be completed within 3 days, the weight of the biofilm reaches 1.556g of dry weight, and the average biofilm formation efficiency reaches 0.732g of biofilm/g of carrier. The microorganisms attached to the biological membrane take organic pollutants as energy sources to degrade the organic pollutants in the water body through the metabolism of the microorganisms, and the biological phase on the biological membrane is stable.

(3) The unit dosage is less, the price is cheap, the engineering investment is far lower than the national standard, and the economic advantage is obvious. From the aspect of treatment cost, the cost for treating 1gCOD is 0.2 yuan, and compared with the traditional sewage treatment filler (the cost for 1gCOD is 1-2 yuan), the filler has the absolute cost performance advantage; in terms of engineering investment, the static water engineering investment for treating the material is 200-300 yuan/m³The treatment dynamic is 300-400 yuan/m³The high concentration wastewater is treated at 500-600 yuan/m³The investment is 600-900 yuan/m lower than that of the national development and transformation commission on the purified water treatment project³The standard of (2).

(4) The biological affinity, the biocompatibility are good, and the oxygenation efficiency is high. The microorganism is fixed on the novel polyacrylonitrile-based modified carbon fiber filler, so that the decomposition function of the microorganism is enhanced. The novel polyacrylonitrile-based modified carbon fiber filler has repeated segmentation and blocking effects on bubbles, so that the concentration of dissolved oxygen in wastewater is increased, and the conversion among microorganisms, organic matters and dissolved oxygen is enhanced.

(5) High stability, light weight, high mechanical strength, long service life and convenient installation and maintenance. The novel polyacrylonitrile-based modified carbon fiber filler has the characteristics of high strength, acid resistance, alkali resistance, oxidation resistance, difficult aging and the like, and is firm and durable, less in replacement times, long in service life, very convenient to install and long in service life of more than 20 years.

The working principle is as follows: after single family domestic sewage or multi-family domestic sewage is collected, the collected domestic sewage enters a filter barrel 5, floaters and particle sundries in the sewage are removed through a sewage filter screen bucket, the collected domestic sewage enters a filler barrel 1, organic matters, metal ions, solid particles and the like in the sewage are absorbed and desorbed through a polyacrylonitrile-based modified carbon fiber filler 3 arranged in the filler barrel 1, and then the sewage flows into a biological filter tank 2, the sewage after the two-stage treatment completely reaches the discharge standard and is discharged into an existing drainage ditch to be discharged into a river, and if no drainage ditch exists, the sewage can be discharged into a farmland.

The daily management and protection of the device are simple, the polyacrylonitrile-based modified carbon fiber filler 3 in the filler barrel 1 is observed every 3 months, if more attachments are found, the polyacrylonitrile-based modified carbon fiber filler is taken out, cleaned by water and then placed back to the corresponding position in the filler barrel 1.

This patent is through practical application, and is respond well. Taking more than 50 sets of processing devices practically used in rural areas in a certain county of Bijie city, Guizhou province as an example, the monitoring data are shown in Table 1.

Table 1 units of domestic sewage treatment monitoring data in county of Bijie city: mg/l

Serial number	Index (I)	An inlet	An outlet	Removal rate%	Emission standard
						1	pH	7.42	7.36	---	6～9
2	SS	87	28	67.8	70
						3	COD	238	37.9	84.1	100
4	BOD₅	80.1	12.6	84.3	30
						5	NH₃-N	5.98	0.66	88.9	15
6	TP	0.679	0.111	83.6	0.5
						7	LAS	0.789	0.273	65.4	5
8	Animal and vegetable oil	4.68	1.86	60.2	20

Note: the discharge standard is the integrated wastewater discharge standard (GB 8978-1996)

Table 1 shows that the removal rate of 7 pollutants is more than 60%, wherein COD and BOD are₅、NH₃The removal rate of N, TP is more than 80%, and the discharge concentration of each pollutant is lower than the primary standard of Integrated wastewater discharge Standard (GB N, TP-1996).

Taking sewage treatment (200 t/d) of a certain livestock slaughter house in Guizhou province as an example, in the process of sewage treatment modification and upgrading, due to the fact that the novel polyacrylonitrile-based modified carbon fiber is adopted as the filler, the wastewater discharge successfully passes the acceptance of the local environmental protection bureau. The original wastewater with more than 4000mg/L of COD and more than 300mg/L of ammonia nitrogen is treated by the method of adding the combined filler by using the traditional A/O process, the effluent is light red, the COD is about 1000mg/L, and the ammonia nitrogen is more than 100mg/L, after the novel polyacrylonitrile-based modified carbon fiber is used as the filler to replace the original combined filler, the current effluent is colorless and tasteless, the monitoring data of real-time online water quality detection equipment shows that the COD is reduced to about 60mg/L, and the ammonia nitrogen is lower than 1mg/L, which means that the treatment level of the COD and the ammonia nitrogen is improved by more than 90 percent on the original basis, in other words, the treatment efficiency of the novel polyacrylonitrile-based modified carbon fiber after being used as the filler to adsorb microorganisms is more than ten times that of the traditional filler.

This patent technique is applicable to rural domestic sewage and administers, view fish pond and breed circulating water treatment, river course improvement, city sewage factory upgrading transformation and slaughter waste water treatment etc. to the domestic sewage that has the waste water of breeding to discharge, only need add a device of exposing to the sun a little and just can reach the treatment effect of ideal, and the device energy consumption of exposing to the sun a little is very low, can be by the solar energy supply. For farmer's happy sewage with large sewage quantity, the sewage is preferably subjected to oil separation treatment by the oil separation tank and then enters the sewage treatment device for treatment.

The embodiments of the present invention are not limited to the above embodiments, and various changes made without departing from the spirit and scope of the present invention are within the scope of the present invention.

Claims

1. The utility model provides a modified carbon fiber filler sewage treatment plant which characterized in that: the filler barrel (1) is internally provided with polyacrylonitrile-based modified carbon fiber filler (3), the biological filter (2) is filled with broken stones, sand and soil, and the filler barrel (1) is connected with the biological filter (2) through a pipeline.

2. The sewage treatment plant with the modified carbon fiber filler according to claim 1, wherein: the biological filter (2) is divided into three layers from bottom to top, the bottommost part is a water permeable layer (6), gravels are placed in the water permeable layer (6), the particle size of each gravel is 1-2cm, and the thickness of the water permeable layer is 10-15 cm; the second floor is for protecting water layer (7), and it has the mixed filler of sand and soil to fill in water layer (7), and sand and soil are according to 2: 1, the thickness of the water-retaining layer (7) is 40-60 cm; the third layer is a soil layer (8) with the thickness of 40-50 cm.

3. The sewage treatment plant with the modified carbon fiber filler according to claim 2, wherein: plants (4) are planted at the top of the biological filter (2).

4. The sewage treatment plant with the modified carbon fiber filler according to claim 1, wherein: a movable cover is arranged above the filling barrel (1), and a handle is arranged on the movable cover.

5. The sewage treatment plant with the modified carbon fiber filler according to claim 1, wherein: the filling barrel (1) is a glass fiber reinforced plastic product, a high-quality plastic product or a brick structure; the biological filter (2) is a brick structure.

6. The sewage treatment plant with the modified carbon fiber filler according to claim 1, wherein: the sewage filter screen bucket is characterized by further comprising a filter barrel (5), and a sewage filter screen bucket is installed in the filter barrel (5).