CN106348538B

CN106348538B - Multifunctional sewage treatment system

Info

Publication number: CN106348538B
Application number: CN201610922512.2A
Authority: CN
Inventors: 崔育倩; 谢文霞; 杨瑞霞; 曾倩
Original assignee: Qingdao University
Current assignee: Qingdao University
Priority date: 2016-10-26
Filing date: 2016-10-26
Publication date: 2020-02-21
Anticipated expiration: 2036-10-26
Also published as: CN106348538A

Abstract

The invention discloses a multifunctional sewage treatment system which comprises a drawer type sealing box body, wherein a plurality of filtering matrixes are laid inside the drawer type sealing box body, a plurality of drawer layers with placing cavities are arranged in the box body, the filtering matrixes for purifying sewage are respectively placed in the drawer layers, and large bluestones, small gravels, fine sand, modified zeolite, a nano composite material and a soil layer are respectively placed on the drawer layers from bottom to top. The multifunctional sewage treatment system disclosed by the invention enhances the nitrogen and phosphorus removal efficiency of the sewage treatment process, solves the problem that the traditional sewage treatment process is difficult to eliminate heavy metal pollution, and simultaneously reduces the workload of later maintenance of the sewage treatment system.

Description

Multifunctional sewage treatment system

Technical Field

The invention relates to the technical field of sewage purification treatment systems, in particular to a multifunctional sewage treatment system.

Background

Sewage treatment is a process of purifying sewage to meet the requirement of draining a certain water body or reusing the water body. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. Domestic sewage is sewage generated in daily life, and refers to various forms of complex mixtures of inorganic matters and organic matters, including floating and suspended solid particles with different sizes, colloidal and gelatinous diffusants and pure solutions.

In China, with the increase of urban population and the development of industrial and agricultural production, the sewage discharge amount is increasing day by day, the water pollution is serious, and the water pollution is almost spread all over the country. According to statistics, at the end of 2000 years, 310 cities in 663 cities in the national city are provided with sewage treatment facilities, 427 seats of sewage treatment plants are built, the annual sewage treatment capacity is 113.6 billion cubic meters, and the sewage treatment rate is only 34.23%. In recent years, the urbanization process is gradually accelerated, some basic supporting facilities cannot be built synchronously (such as sewage treatment plants), and the building of the sewage treatment plants needs a large amount of capital investment, which is undoubtedly a huge expense for villages and towns. However, with the rapid deterioration of pollution, a facility which is practical in the towns, has low capital investment and is simple to operate is urgently needed for treating domestic sewage in the towns.

In the existing sewage treatment system, the following problems exist when the substrate is used: on one hand, some matrix materials have low phosphorus removal rate and low denitrification efficiency, such as traditional soil, gravel, fine sand and the like; on the other hand, some substrates are stones, gravels, fine sands and the like, the laying area is large, and the workload of later maintenance is greatly increased.

Disclosure of Invention

Aiming at the defects or shortcomings in the prior art, the invention innovatively provides a multifunctional sewage treatment system, which strengthens the nitrogen and phosphorus removal efficiency of the artificial wetland sewage treatment process, solves the problem that the traditional artificial wetland treatment process is difficult to eliminate heavy metal pollution, and simultaneously reduces the workload of later maintenance of the sewage treatment system.

The technical scheme of the invention is realized as follows:

a multifunctional sewage treatment system comprises a drawer type sealed box body, wherein multiple filtering matrixes are laid inside the drawer type sealed box body, multiple drawer layers with placing cavities are arranged in the box body, the filtering matrixes for purifying sewage are placed in the drawer layers respectively, and large bluestone, small gravel, fine sand, modified zeolite, a nano composite material and a soil layer are placed on the multiple drawer layers from bottom to top respectively;

the box body is internally provided with a slide rail, a pulley which is in sliding fit with the slide rail is arranged on a drawer layer, the drawer layer comprises a panel, a bottom plate and a side plate, the panels of the drawer layers are adjacently arranged, guide grooves for drawing out or pushing in the drawer layer are arranged on the panels of the adjacent drawer layers, the inner side walls of the guide grooves are baffle plates fixedly connected with the back surfaces of the panels, the outer side walls of the guide grooves are lower than the baffle plates, and the bottom plate is provided with a plurality of water through holes which facilitate water body to permeate layer by layer;

the bottom of the sealed box body is provided with a water inlet pipe for injecting sewage into the box body, and one end of the water inlet pipe is fixedly connected with a water seepage pipe paved at the bottom of the sealed box body; and the top of the sealed box body is provided with a water outlet pipe for allowing water which is subjected to sewage treatment and sequentially filtered to the top drawer layer from the bottom drawer layer to flow out of the sealed box body.

Preferably, the other end of inlet tube is provided with and is arranged in filtering the screen drum that filters out particle impurity in the sewage, the one end opening of filtering the screen drum, the other end are fixed with the filter screen, the one end that filtering the screen drum is fixed with the filter screen is provided with the external screw thread with inlet tube internal thread matched with.

Preferably, the water inlet pipe is laid on the bottom layer of the box body in a spiral or snake-shaped bent pipe mode.

Preferably, the bottom of the sealed box body is provided with an impermeable layer.

Preferably, the thickness ratio of the large block bluestone, the small gravel, the fine sand, the modified zeolite and the nano composite material is 300: 200: 100: 60: 1.

Preferably, the nanocomposite is MuFe-Na.

Preferably, the particle size of the filtering matrix in the sealed box body decreases progressively from bottom to top.

Preferably, the water outlet pipe is provided with a water pump for pumping the filtered water body to the water outlet pipe and a valve for adjusting the water flow and preventing the water body from flowing backwards.

Compared with the prior art, the invention has the beneficial effects that:

the invention discloses a multifunctional sewage treatment system, which is characterized in that a synthesized iron-based nano composite material is applied to a sewage treatment process, and the nitrogen and phosphorus removal efficiency of the sewage treatment process is enhanced by virtue of the strong adsorption capacity, photocatalytic efficiency and high photodegradation efficiency of the nano composite material, so that the problem that the heavy metal pollution is difficult to eliminate in the traditional sewage treatment process is solved, and the sewage purification effect is effectively improved.

The multifunctional sewage treatment system adopts the drawer type sealed box body, each filtering substrate is respectively placed in each drawer layer from top to bottom, and the filtering substrates are placed in layers, so that the filtering substrates are prevented from being mixed into a whole and cannot be maintained independently; when the filtering matrix is maintained in the later period, each drawer layer is drawn out, the filtering matrix is replaced, and the like, so that the workload of the later maintenance of the sewage treatment system is reduced; the filter screen cylinder is arranged at the water inlet pipe at the bottom of the sealed box body, so that large-particle impurities in the sewage can be prevented from flowing into the water seepage pipe along with the sewage to block the water seepage pipe or small holes; the detachable filter screen cylinder can be replaced according to requirements in later maintenance without replacing the whole water inlet pipe, so that the cost is saved; the infiltration pipe is the mode of spiral or snakelike return bend and lays in the bottom of sealed box, has increased the inflow of the volume of laying of infiltration pipe and sewage, simultaneously, can prevent that the infiltration pipe from taking place to buckle, has improved the life of infiltration pipe.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the sealed housing of the present invention;

FIG. 3 is a schematic view of the drawer layer of the present invention;

FIG. 4 is a side sectional view of the solid housing of the present invention;

FIG. 5 is a schematic view of the laying of the water intake riser of the present invention;

FIG. 6 is a schematic view of the construction of a screen cartridge of the present invention;

FIG. 7 is a schematic view of example 1 of the present invention;

FIG. 8 is a side view of the water intake riser and the sleeve of embodiment 2 of the present invention;

FIG. 9 is a schematic view of the structure of a water intake pipe 1 according to embodiment 2 of the present invention;

FIG. 10 is a schematic view of the structure of a water inlet pipe according to embodiment 2 of the present invention;

FIG. 11 is a side view of embodiment 3;

fig. 12 is a top view of the baffle of example 3;

reference numerals: 1. wetland plants; 2. a drawer layer; 3. a large block of bluestone; 4. small gravel; 5. fine sand; 6. a modified zeolite; 7. a nanocomposite; 8. a soil layer; 9. a slide rail; 10. a pulley; 11. a panel; 12. a base plate; 13. a side plate; 14. a baffle plate; 15. an outer side arm; 16. a water through hole; 17. a water inlet pipe; 18. a water seepage pipe; 19. a water outlet pipe; 20. a small hole; 21. a sleeve; 22. a diversion trench; 23. an impermeable layer; 24. a water pump; 25. a valve; 26. a filter screen cylinder; 27. a filter screen; 28. an external thread; 29. a baffle; 30. a water inlet cavity; 31. a filter chamber; 32. and (4) flow guide holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in attached figure 1, the invention provides a multifunctional sewage treatment system, which comprises a water inlet pipe 17, a water seepage pipe 18, a sealed box body and a water outlet pipe 19. The box body is a drawer type sealed box body, a plurality of drawer layers 2 with placing cavities are arranged in the sealed box body, the number of the drawer layers 2 is at least six, each drawer layer 2 can be respectively placed with different filtering matrixes for purifying sewage, and the plurality of drawer layers 2 are respectively placed with a large block of bluestone 3, small gravel stone 4, fine sand 5, modified zeolite 6, a nano composite material 7 and a soil layer 8 from top to bottom; the thickness ratio of each layer of the filter substrate is as follows: the mass green stone 3, the small gravel stone 4, the fine sand 5, the modified zeolite 6 and the nano composite material 7 are 300: 200: 100: 60: 1, and the thickness of the soil layer 8 is not limited; the particle size of each layer of the filter substrate is as follows: 3 portions of large blocks of bluestone, 4 portions of small gravel, 4 portions of fine sand, 5 portions of modified zeolite, 6 portions of modified zeolite and 7 portions of nano composite material; the nano composite material 7 is MuFe-Na, and the nitrogen and phosphorus removal efficiency of the sewage treatment process is enhanced by means of the strong adsorption capacity, photocatalytic efficiency and high photodegradation efficiency of the nano composite material 7; the bottom of sealing box is provided with barrier layer 23, and barrier layer 23 is waterproof ventilated membrane, contains the hole that gas molecule can pass through and liquid hydrone can not permeate in the waterproof ventilated membrane.

As shown in the attached drawings 2-4, a slide rail 9 is arranged in the sealed box body, a pulley 10 which is matched with the slide rail 9 to slide is arranged on the drawer layer 2 and is used for drawing out or pushing in the drawer layer 2, and by using the drawer type sealed box body, each filtering substrate can be separately placed, so that each filtering substrate is prevented from being mixed into a whole, the later maintenance of the filtering substrates in the sealed box body is facilitated, and the working difficulty of the later maintenance is reduced; the drawer layers 2 comprise panels 11, bottom plates 12 and side plates 13, the panels 11 of the drawer layers 2 are arranged adjacently, guide grooves for drawing out or pushing in the drawer layers 2 are formed in the panels 11 of the adjacent drawer layers 2, the inner side walls of the guide grooves are baffle plates 14 fixedly connected with the back surfaces of the panels 11, and the height of the outer side walls 15 of the guide grooves is lower than that of the baffle plates 14; the outer surface of the panel 11 can be provided with a handle for drawing out or pushing in the drawer layer 2, and can be used alternatively with the guide groove; the bottom plate 12 is provided with a plurality of limber holes 16, which is convenient for water to be introduced into the drawer layer 2 of each layer of filtering substrate from bottom to top, so that sewage can be infiltrated layer by layer, and the effective purifying effect can be achieved.

As shown in fig. 5 and 6, the bottom of the sealed box is provided with a water inlet pipe 17 for injecting sewage into the box, one end of the water inlet pipe 17 is fixedly connected with a water seepage pipe 18 spirally laid at the bottom of the wetland box, the other end of the water inlet pipe 17 is provided with a filter screen cylinder 26 for filtering out particle impurities in the sewage, one end of the filter screen cylinder 26 is open, the other end is fixed with a filter screen 27, one end of the filter screen cylinder 26, which is fixed with the filter screen 27, is provided with an external thread 28 matched with the internal thread of the water inlet pipe 17 for filtering out the large particle impurities in the sewage, preventing the large particle impurities from flowing into the water seepage pipe 18 along with the sewage, blocking the water seepage pipe 18, and a detachable filter screen cylinder 26, which can be replaced according to needs in later maintenance; the water outlet pipe 19 is arranged at the top of the sealed box body and used for discharging the water body which is filtered to the sewage treatment of the top drawer layer through the bottom drawer layer in sequence out of the sealed box body and collecting the water body, and the water outlet pipe 19 is provided with a water pump 24 used for pumping the water body after filtering treatment to the water outlet pipe 19 and a valve 25 used for adjusting the water body flow and preventing the water body from flowing reversely.

Example 1:

as shown in fig. 7, the bottom of the sealed box is provided with a water inlet pipe 17 for injecting sewage into the box, one end of the water inlet pipe 17 is fixedly connected with a water seepage pipe 18, and the water seepage pipe 18 is laid at the bottom of the sealed box in a snake-shaped bent pipe manner, so that the laying amount of the water seepage pipe 18 at the bottom of the sealed box and the inflow amount of the sewage are increased.

Example 2:

as shown in fig. 8-9, small holes 20 are drilled in the water seepage pipe 18 at intervals of 40cm-50cm, sleeves 21 are arranged at the positions of the small holes 20 in the water seepage pipe 18, the arrangement of the small holes 20 can effectively control the inflow of sewage, the arrangement of the sleeves 21 can prevent silt flowing into the water seepage pipe 18 along with the sewage from blocking the water seepage pipe 18 and the small holes 20 after long-time sedimentation, the inflow of the sewage is influenced, flow guide grooves 22 which are arranged in a staggered mode with the small holes are arranged in the sleeves 21, and the arrangement of the flow guide grooves 22 can increase the inflow of the sewage within the controllable range of the inflow of the sewage.

Example 3:

as shown in fig. 11 and 12, a guide plate 29 is arranged at the lower middle part of the sealed box body, the guide plate 29 divides the sealed box body into an inlet cavity 30 and a filter cavity 31 from bottom to top, and a water inlet pipe for injecting sewage into the inlet cavity is arranged at the bottom of the wetland box bottom; a plurality of filtering matrixes are laid in the filtering cavity, and a plurality of layers of filtering matrixes in the filtering cavity are sequentially laid with large bluestones, small gravels, fine sand, modified zeolite, nano composite materials and soil layers from bottom to top; the top of the sealed box body is provided with a water outlet pipe 19 which is used for discharging and collecting the water body which is treated by the sewage of various filtering matrixes from bottom to top out of the sealed box body; the guide plate 29 is provided with a guide hole 32 communicating the water inlet cavity 30 and the filter cavity 31.

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

1. A multifunctional sewage treatment system is characterized by comprising a drawer type sealing box body, wherein a plurality of filtering matrixes are laid inside the drawer type sealing box body, a plurality of drawer layers with placing cavities are arranged in the box body, the filtering matrixes for purifying sewage are respectively placed in the drawer layers, and large bluestones, small gravels, fine sand, modified zeolite, a nano composite material and a soil layer are respectively placed on the drawer layers from bottom to top;

the bottom of the sealed box body is provided with a water inlet pipe for injecting sewage into the box body, and one end of the water inlet pipe is fixedly connected with a water seepage pipe paved at the bottom of the sealed box body; the top of the sealed box body is provided with a water outlet pipe for enabling water after sewage treatment from the bottom drawer layer to the top drawer layer to flow out of the sealed box body sequentially through infiltration filtration, the water seepage pipe is laid at the bottom of the box body in a spiral or snake-shaped bent pipe mode, small holes are drilled in the water seepage pipe at intervals of 40cm-50cm, sleeves are arranged at the positions of the small holes in the water seepage pipe, and guide grooves staggered with the small holes are formed in the sleeves.

2. The multifunctional sewage treatment system of claim 1, wherein: the other end of inlet tube is provided with and is arranged in filtering the screen section of thick bamboo that filters out particulate impurity in the sewage, the one end opening of a screen section of thick bamboo is filtered, and the other end is fixed with the filter screen, the one end that a screen section of thick bamboo is fixed with the filter screen is provided with the external screw thread with inlet tube internal thread matched with.

3. The multifunctional sewage treatment system of claim 1, wherein: and the bottom of the sealing box body is provided with an impermeable layer.

4. The multifunctional sewage treatment system of claim 1, wherein: the thickness ratio of the large block bluestone, the small gravel, the fine sand, the modified zeolite and the nano composite material is 300: 200: 100: 60: 1.

5. The multifunctional sewage treatment system of claim 1, wherein: the particle size of the filtering substrate in the sealed box body is as follows: large bluestone > small gravel > fine sand > modified zeolite > nano composite material.

6. The multifunctional sewage treatment system of claim 1, wherein: and the water outlet pipe is provided with a water pump for pumping the filtered water body to the water outlet pipe and a valve for adjusting the water body flow and preventing the water body from flowing reversely.