CN114804512A

CN114804512A - Sewage treatment device

Info

Publication number: CN114804512A
Application number: CN202210342311.0A
Authority: CN
Inventors: 肖羽堂; 张文君; 陈伟文; 潘卓铭; 许艺; 杜鑫睿
Original assignee: South China Normal University
Current assignee: South China Normal University
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-07-29

Abstract

The invention discloses a sewage treatment device. The sewage treatment device comprises an adjusting tank, a filter net film, a circular pipeline, a deoiling device, a valve and a disinfection tank which are connected in sequence; the circular pipeline is internally provided with glass pumice; a first baffle and a second baffle which are parallel to each other are arranged in the circular pipeline; the length of the first baffle and the length of the second baffle are not less than the diameter of the circular pipeline. The sewage treatment device obviously improves the water quality of sewage.

Description

Sewage treatment device

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment device.

Background

With the progress of times and the development of science and technology, the modernization process of China is continuously accelerated, and certain water pollution problem is brought along. The rapid development of rural urbanization causes a certain degree of damage to the water environment, the sewage treatment speed cannot keep pace with the discharge, and the application of the fertilizer containing nitrogen and phosphorus in partial rural areas causes partial fertilizer, domestic sewage and the like to be directly discharged into rivers, so that the nitrogen, phosphorus and organic pollution amount in the water body is greatly increased, the content of dissolved oxygen in the water body is reduced and exceeds the self-purification capacity of the water body, and finally the black and odorous phenomenon of the river water body is caused. Meanwhile, with the urbanization process of the village accelerated, more rural pollutants enter the river, so that the restoring force and stability of a river ecosystem are reduced, and the river pollution is increasingly intensified. River sewage treatment cost is often limited, and secondary water pollution treatment fields cannot be built on a large scale. How to realize the purification and reuse of river water becomes an important subject of the current water pollution control.

The current river water treatment technology mainly comprises the steps of using a filter membrane machine, establishing an underwater ecosystem, a KIC (biological contact oxidation) in-situ treatment technology, developing an artificial floating island and the like. The cost of the membrane filter is high, a large amount of biological support is needed for building an underwater ecosystem, and a large amount of expenses are needed for benefits brought by a small ecosystem which can be formed by a research institute. The KIC in-situ treatment technology comprises the steps and measures of aerating and oxygenating a river channel, adding a microbial agent, biologically repairing bottom mud, setting a biological nest system and the like. Aeration and oxygenation aim at arranging aeration facilities in sections in a river course to strengthen aeration and oxygenation on a water body, improve the content of dissolved oxygen, promote water layer exchange and water body circulation and strengthen the activity of aerobic microorganisms. And (3) adding a compound microbial agent in the river channel in cooperation with water aeration and oxygenation, and rapidly propagating compound microorganisms in water to form stable dominant flora. During the treatment period, the sediment bioremediation agent is directly put in the river channel regularly, the anaerobic habitat of the sediment and the bottom water layer is changed, the bottom microorganisms are promoted to be replaced from anaerobes to aerobes, the degradation and the mineralization of the organic pollutants in the sediment are accelerated, the release of oxygen-consuming substances in the sediment to an overlying water body is controlled, a small ecological system can be constructed by a biological nest system, the biological diversity is increased, and the purification effect of an aquatic biological chain on the water body is exerted. Although the KIC technology is mature, the cost is also high in aeration and addition of biological agents.

In addition, the current infrastructure for river water treatment mainly comprises a septic tank and a sewage methane purification tank. Septic tanks are not effective and can only be used for the treatment of fecal matter. The sewage methane purification tank can only use the primary treatment of sewage, and cannot achieve good effect.

Disclosure of Invention

The technical problem to be solved by the invention is as follows:

provides a sewage treatment device. The sewage treatment device is characterized in that glass pumice is arranged in the circular pipeline, the first baffle and the second baffle are arranged in the circular pipeline, and under the combined action, the water quality of sewage is obviously improved.

In order to solve the technical problem, the technical scheme adopted by the invention is as follows:

a sewage treatment device comprises a regulating tank, a filter net film, a circular pipeline, a deoiling device, a valve and a disinfection tank which are connected in sequence;

the circular pipeline is filled with glass pumice;

the inner wall of the circular pipeline is provided with a first baffle and a second baffle which are parallel to each other; the first baffle and the second baffle are respectively arranged on two sides of the axis of the circular pipeline;

the length of the first baffle and the length of the second baffle are not more than the inner diameter of the circular pipeline.

The round pipeline is internally provided with a space three-dimensional filler glass pumice. The glass pumice is a novel environment-friendly regeneration material, has the characteristics of cleanness, environment friendliness, excellent adhesion performance, no pollution and the like, and greatly promotes the sewage treatment effect due to the microbial adhesion and biofilm formation of the glass pumice. The circular pipeline adopts a high-efficiency dominant bacteria biofilm filtration technology, the polluted water can degrade most organic pollutants by flowing through the pipeline, the water quality is obviously improved, most water quality indexes are qualified, and the water quality can be used for irrigating farmlands or wetland on the basis of retaining proper nutrients.

The water body treated by the device is used for farmland or wetland irrigation, so that the burden of farmers can be reduced, and the water resource can be reused and the nutrient components can be fully utilized.

According to one embodiment of the invention, the glass pumice is an absorbent filler made from glass by remelting.

According to one embodiment of the invention, the sewage is subjected to an anaerobic purification treatment in said circular pipe.

According to one embodiment of the invention, the regulating reservoir is 1-10m 0.8-5m 0.6-3m in size and is used for regulating the amount of water.

According to one embodiment of the invention, the aperture of the filter net membrane is 3-25mm, and the filter net membrane is a detachable net membrane. The filtering net film filters out larger particles in the sewage.

The glass pumice is a porous material made of waste glass, and is mainly applied to the construction of sponge cities at present. The inside of the glass pumice is of a uniform pore structure. For the glass pumice with high water absorption, the pores inside the glass pumice are mainly of an open structure, and the pore channels are communicated with each other, so that the glass pumice has extremely strong adsorption performance on gas or liquid.

The glass pumice is an adsorptive filler prepared by recovering and re-melting (waste) glass products, and has high environmental protection value. The glass pumice is a carrier attached by microorganisms, and the microorganisms grow in the pores. The adsorbent is strong, is a good carrier of microorganism, and is easy to form a biological film on the surface.

According to one embodiment of the invention, the glass pumice has pores therein, the porosity being greater than 90% and the pore diameter being from 0.1 to 5 mm. The particle density range of the glass pumice is 0.2-1.6g/cm ³ . The porosity of the glass pumice is more than 90%, the pore diameter is 0.1-5mm, and the glass pumice has a very large specific surface area which can reach 2.0268m ² The/g is a good carrier for microorganisms and a good filter material. The glass pumice with high porosity is used as a carrier for attaching microorganisms, and the microorganisms can grow well in pores and can be better used as a biofilm formation material. The glass pumice filling material is preferably processed into a pebble shape, and can ensure that water flows smoothly when being filled.

The glass pumice is not easy to wear and crush, has certain mechanical strength and long service life. Dense bubbles and micropores are formed in the glass pumice, so that the quality of the product is greatly reduced, and the transportation cost is reduced; meanwhile, the specific surface area is large, which is more beneficial to the biofilm formation of microorganisms, thereby improving the water purification efficiency. The product is roasted at high temperature in the production process of the glass pumice, and no other complex links are needed in the production process without adding additional raw materials, so that the product is sterile, free of insects, non-toxic, harmless and non-radioactive, and the whole production process is environment-friendly. The glass pumice has good chemical stability, is not easy to generate any chemical reaction with substances in the water purification process, is dissolved in water, does not participate in biological reaction to cause degradation, and therefore, the service life of the product is long. The glass pumice has high flexibility and strong adaptability, has various types, and can be divided into various types according to the aperture. Different glass pumice can be adopted for application according to different treatment conditions.

According to an embodiment of the invention, the round pipe is further filled with an auxiliary agent, the auxiliary agent is dispersed and distributed in the glass pumice, and the auxiliary agent comprises a foaming agent and a stabilizing agent.

According to one embodiment of the invention, the adjuvant comprises at least one of calcium carbonate, sodium carbonate and sodium hydroxide.

According to one embodiment of the invention, the circular pipeline is provided with an upper rail and a lower rail, the upper rail is connected with the first baffle, and the lower rail is connected with the second baffle. The first baffle can slide on the upper track, the second baffle can slide on the lower track, the upper track and the lower track are respectively connected with an electric wire, and the sliding power sources of the first baffle and the second baffle are electric energy.

The first baffle and the second baffle regulate and control the flow velocity of the water body by regulating and controlling the distance between the first baffle and the second baffle, and on the other hand, the glass pumice is pushed by regulating and controlling the relative position between the first baffle and the second baffle, so that the glass pumice is not accumulated at one position, and the filtering effect of the glass pumice on sewage is influenced.

According to an embodiment of the present invention, the first baffle is provided with a square hole. The square hole is used for water flow to pass through, and the square hole is arranged to avoid that the water body cannot flow due to the blocking of the glass pumice or other barriers when the first baffle and the second baffle are too close to each other.

According to one embodiment of the invention, the axial distance between the first baffle and the second baffle is X, wherein X is more than 10m and is more than or equal to 0m, and preferably, the first baffle and the second baffle are arranged in a staggered mode in the axial direction of the circular pipeline; x is more than or equal to 1.5m and more than or equal to 0.5 m.

According to one embodiment of the invention, the lower part of the deoiling device is funnel-shaped, and a grease adsorption net is arranged in the deoiling device. Deoiling device lower part is the infundibulate, does benefit to the grease outflow that adsorbs out the deoiling device collects the grease that the below flows through the infundibulate.

According to an embodiment of the present invention, a grease adsorbent is disposed on the grease adsorbing net for adsorbing grease.

According to one embodiment of the invention, the grease adsorbent comprises 10-30 parts by weight of attapulgite, 10-20 parts by weight of shell activated carbon and 5-10 parts by weight of carbonized soybean shell ash. Wherein the shell comprises at least one of coconut shell, peach shell, walnut shell and jujube shell.

According to one embodiment of the invention, the grease adsorbing net is a double-layer detachable net, and the pore diameter of the grease adsorbing net is 5-10 nm.

One of the technical solutions has at least one of the following advantages or beneficial effects:

the glass pumice is arranged in the circular pipeline in the sewage treatment device, and has the characteristics of cleanness, environmental protection, excellent adhesion performance and no pollution, the microorganism adhesion hanging film of the glass pumice greatly promotes the sewage treatment effect, and the polluted water can degrade most organic pollutants through the pipeline, so that the water quality is obviously improved.

The first baffle and the second baffle in the sewage treatment device regulate and control the flow velocity of a water body on one hand and regulate and control the position of the glass pumice on the other hand.

The oil removal device in the sewage treatment device adsorbs grease in the water body, and the water body is further purified.

The sewage treatment device overcomes a series of problems caused by aerobic biological treatment in the existing sewage treatment process, such as high energy consumption, difficult maintenance, long treatment time, odor, high cost and the like, and provides the biological treatment device for the sewage in the rural river, which has the advantages of low investment, low operation cost, simple process equipment and wide application range.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

FIG. 1 is a schematic view of a sewage treatment apparatus according to an embodiment.

FIG. 2 is a schematic view of a circular pipe in the sewage treatment apparatus according to the embodiment.

FIG. 3 is a schematic view of a deoiling apparatus in a sewage treatment apparatus according to an embodiment.

Reference numerals:

100-adjusting tank, 200-filter screen membrane, 300-sterilizing tank, 400-round pipeline, 410-upper track, 420-lower track, 430-first baffle, 431-square hole, 440-second baffle, 450-glass pumice, 500-deoiling device, 510-grease adsorption net and 600-valve.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout.

The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, if there are first, second, third, etc. described only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplicity of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly defined, terms such as arrangement, installation, connection and the like should be broadly understood, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention in combination with the detailed contents of the technical solutions.

Examples

A sewage treatment device comprises a regulating tank 100, a filter net membrane 200 with the aperture of 12mm, a circular pipeline 400, a deoiling device 500, a valve 600 and a disinfection tank 300 which are connected in sequence;

the size of the regulating reservoir 100 is 5m × 2 m.

The diameter of the circular pipe 400 is 1m, and the length of the pipe is 5 m.

The circular pipeline 400 is filled with the glass pumice 450, and the diameter of the pores of the glass pumice 450 is 0.1-5 mm; the round pipeline 400 is further filled with an auxiliary agent, the auxiliary agent is dispersed and distributed in the glass pumice 450, and the auxiliary agent comprises the following components in parts by weight: 1 calcium carbonate and sodium hydroxide.

An upper rail 410 and a lower rail 420 are arranged in the circular pipeline 400, the upper rail 410 is connected with the first baffle 430, the lower rail 420 is connected with the second baffle 440, the first baffle 430 can slide on the upper rail 410, the second baffle 440 can slide on the lower rail 420, the upper rail 410 and the lower rail 420 are respectively connected with electric wires, and the power for sliding the first baffle 430 and the second baffle 440 is derived from electric energy;

the circular duct 400 is provided with a first baffle 430 and a second baffle 440 which are parallel to each other; a square hole 431 is formed on the first baffle 430; the first baffle 430 and the second baffle 440 are provided so as to be "offset" in the axial direction of the circular duct 400, and the axial distance between the first baffle 430 and the second baffle 440 is 0.5 m.

The lengths of the first baffle 430 and the second baffle 440 are smaller than the diameter of the circular pipe 400;

the lower part of the deoiling device 500 is funnel-shaped, and a grease adsorption net 510 is arranged in the deoiling device 500; the grease adsorption net 510 is provided with a grease adsorbent, and the grease adsorbent comprises 10 parts by weight of attapulgite, 20 parts by weight of coconut shell activated carbon and 8 parts by weight of carbonized soybean shell ash; the grease adsorption net 510 is a double-layer detachable net, and the diameter of the grease adsorption net 510 is 10 nm.

The disinfectant used in the disinfection tank 300 is an environment-friendly disinfectant which does not corrode equipment and consists of the following components in parts by weight: 0.1 part by weight of isovalerylshikonin, 1.5 parts by weight of sodium silicate and 0.5 part by weight of sodium citrate.

Comparative example

The comparative examples differ from the examples only in that: the circular pipeline is not provided with glass pumice.

And (3) performance testing:

1. taking the comprehensive sewage discharged by guan-shan gushes, and carrying out water body test on the comprehensive sewage, wherein an instrument used for the test is a KLAB QX water quality analyzer. Turbidity was 11.89; the pH was 8.28; COD is 228 mg/L; the total phosphorus is 0.194 mg/L; ammonia nitrogen is 15 mg/L; the oil content is 125 mg/L.

Dividing the comprehensive sewage discharged by guan-shan gushes into two parts, wherein the first part is treated by the sewage treatment device provided by the embodiment of the invention, and the turbidity of the treated water body is 1.60; the pH was 7.26; COD is 58 mg/L; TP (total phosphorus) is 0.105 mg/L; the ammonia nitrogen content is basically unchanged; the oil content is 2.0 mg/L. The second part is treated by the device of the comparative example, and the turbidity of the treated water body is 7.53; the pH was 7.55; COD is 182 mg/L; the total phosphorus is 0.177 mg/L; the ammonia nitrogen content is basically unchanged; the oil content was 1.9 mg/L.

The treated first water body is used for irrigating pumpkin seedlings, the pumpkin seedlings germinate after one day of irrigation, the pumpkin seedlings grow 2cm after two days of irrigation, and the pumpkin seedlings grow 8cm after three days of subsequent irrigation, so that the pumpkin seedlings grow well.

2. Taking comprehensive sewage discharged by guan-shan gushes, and carrying out a water body test on the comprehensive sewage, wherein the turbidity is 11.33; the pH was 8.01; COD is 224 mg/L; the total phosphorus is 0.176 mg/L; the ammonia nitrogen content is 13 mg/L. The comprehensive sewage discharged from the guan-shan gushes is divided into eight equal parts, and the eight parts are respectively treated by the sewage treatment device, wherein the distance X between the first baffle and the second baffle in the sewage treatment device is a unique variable, and the test result and the test parameters are shown in table 1.

TABLE 1

The above description is only an example of the present invention and is not intended to limit the scope of the present invention, and all equivalent modifications made by the present invention in the specification or the related technical fields, which are directly or indirectly applied, are included in the scope of the present invention.

Claims

1. A sewage treatment device is characterized in that:

comprises a regulating tank, a filter net film, a circular pipeline, a deoiling device, a valve and a sterilizing tank which are connected in sequence;

the circular pipeline is filled with glass pumice;

2. The sewage treatment apparatus according to claim 1, wherein: the glass pumice is an absorbent filler made from glass by remelting.

3. The sewage treatment apparatus according to claim 1, wherein: the glass pumice has pores with a porosity of more than 90 percent and a pore diameter of 0.1-5 mm.

4. The sewage treatment apparatus according to claim 1, wherein: the aperture of the filter net membrane is 3-25mm, and the filter net membrane is a detachable net membrane.

5. The sewage treatment apparatus according to claim 1, wherein: the round pipeline is further filled with auxiliaries, the auxiliaries are dispersed in the glass pumice, and the auxiliaries comprise a foaming agent and a stabilizing agent.

6. The sewage treatment apparatus according to claim 1, wherein: an upper rail and a lower rail are arranged in the circular pipeline, the upper rail is connected with the first baffle, and the lower rail is connected with the second baffle.

7. The sewage treatment apparatus according to claim 1, wherein: the axial distance between the first baffle and the second baffle is X, wherein X is more than 10m and is more than or equal to 0m, and preferably, the first baffle and the second baffle are arranged in a staggered mode in the axial direction of the circular pipeline; x is more than or equal to 1.5m and more than or equal to 0.5 m.

8. The sewage treatment apparatus according to claim 1, wherein: the lower part of the oil removing device is funnel-shaped, and a grease adsorption net is arranged in the oil removing device.

9. The sewage treatment apparatus according to claim 8, wherein: and a grease adsorbent is arranged on the grease adsorption net.

10. The sewage treatment apparatus according to claim 8, wherein: the grease adsorption net is a double-layer detachable net, and the aperture of the grease adsorption net is 5-10 nm.