CN217148732U - Sewage treatment system based on modularization constructed wetland - Google Patents

Abstract

The utility model discloses a sewage treatment system based on modular constructed wetland, including the district of intaking, modular constructed wetland area, catchment area, the modular constructed wetland area is provided with water distributor and catchment pipe in order to communicate respectively the district of intaking, catchment area, the modular constructed wetland area can contain 1 or more constructed wetland modules, and the constructed wetland module adopts the differentiation to fill that the lower floor fills basic matrix, and the modular matrix is filled to the top layer, in addition, can also be fixed with the microorganism of supplementary sewage treatment on the modular matrix in order to promote the water treatment capacity of system; in addition, a liquid level regulator can be arranged at the tail end of a drain pipe connected with the water collecting pipe, so that the water level of the system can be flexibly regulated, and functions of water quantity regulation, wetland backwashing and the like can be realized. The utility model discloses a sewage treatment system has that water treatment is effectual, anti jam, advantage such as maintain the convenience.

Description

Sewage treatment system based on modularization constructed wetland

Technical Field

The utility model belongs to the technical field of sewage treatment, a sewage treatment system is related to, especially relate to a sewage treatment system based on modularization constructed wetland.

Background

The artificial wetland is a sewage biological treatment technology developed in the late 70 th of the 20 th century, and is an engineering system which consists of aquatic plants, substrates and microorganisms and utilizes the natural process of the aquatic plants to purify sewage. Compare with traditional sewage treatment system, constructed wetland has huge economic advantages in the aspect of construction cost and working costs etc. according to the student's calculation: under the same treatment effect, the energy consumption of the artificial wetland system is lower than one fourth of that of the activated sludge method; in addition, the artificial wetland also has important ecological service values of ecological restoration, landscape beautification, climate regulation and the like. In conclusion, the constructed wetland treatment system is particularly suitable for rural areas with relatively laggard funds and technologies, and the technology is widely applied under the policy background of centralized control of rural environments in China.

However, in the actual operation process, the problem of filler blockage is gradually generated under the conditions of artificial wetland design defects, poor management, long-term operation and the like. The blockage can cause the phenomena of shortened hydraulic retention time, surface flow, short flow and the like of the wetland, thereby seriously reducing the purification capacity of the wetland and even influencing the surrounding ecological environment. A great deal of research shows that organic matters accumulated in the artificial wetland are mainly concentrated on the surface layer, which indicates that wetland blockage mainly occurs on the upper layer, so that the function of the artificial wetland can be effectively recovered by replacing the surface substrate of the artificial wetland, but for large-scale artificial wetlands, the work amount for replacing the surface substrate is huge, the difficulty is high, the artificial wetland needs to be stopped during replacement, and the replacement time is long.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an aim at to current constructed wetland sewage treatment system exist to the pollutant get rid of inefficiency, the running life is short, easily block up and difficult clear draw the scheduling problem, provide one kind can effectively promote the pollutant and get rid of efficiency, anti jam, maintain convenient based on modularization constructed wetland's sewage treatment system, reduce current constructed wetland system clearly draw and change the matrix degree of difficulty, engineering volume and cost, reduce the constructed wetland and maintain the degree of difficulty.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sewage treatment system based on a modular constructed wetland comprises a water inlet area, a modular constructed wetland area and a water collecting area, wherein the modular constructed wetland area is provided with a water distribution pipe and a water collecting pipe, the water distribution pipe is communicated with the water inlet area, the water collecting pipe is communicated with the water collecting area, and the water collecting area is also provided with a drain pipe; the modular constructed wetland area may comprise 1 or more constructed wetland modules. The artificial wetland module is filled in a differentiated mode, namely a basic matrix is filled in the lower layer, and a modular matrix is filled in the surface layer; the basic matrix can be one or a combination of more of macadam, ceramsite, zeolite, aluminum sludge and the like; the modularized matrix can be a permeable matrix module which is made and formed by adopting an inorganic matrix or an organic matrix and has high porosity and a regular shape; the modularized matrix has good water permeability, is not easy to block and is convenient to install. The thickness of the modular substrate can be generally 5-30 cm. The concrete filling modes of the artificial wetland modules can be the same or different.

Furthermore, microorganisms for assisting sewage treatment can be fixed in the modularized matrix, so that the removal rate of the system on organic matters, nitrogen and phosphorus in sewage can be effectively improved, and the water treatment effect of the system is enhanced.

Furthermore, a plurality of plant growing holes can be reserved on the modularized matrix, so that the wetland plants can be planted and positioned conveniently; the wetland plant can be selected from Thalia dealbata, canna, Acorus calamus, etc.

Furthermore, the water collecting pipe is communicated with the water collecting area through a water discharging pipe, and the height of an outlet at the tail end of the water discharging pipe is adjustable. Furthermore, a liquid level regulator can be arranged at the tail end of the drain pipe to regulate the height of the water outlet; the liquid level regulator can be realized in a mode of electric drive or mechanical connection drive. The water level of the system can be flexibly adjusted to adjust the water quantity, and the system can be matched with the emptying pipe to realize functions of wetland backwashing and the like, wherein the emptying pipe is plugged when the system normally works, and is combined with the liquid level regulator to complete the cleaning of the wetland when the wetland is maintained.

Furthermore, the water distribution pipe and the water collecting pipe are perforated pipes, and the perforation mode can be preferably that the holes are staggered obliquely downwards and are uniformly distributed and collected.

The utility model has the advantages that:

1. the modularized constructed wetland is filled differentially, the lower layer is filled with basic matrixes, and the upper layer is filled with modularized matrixes with a certain thickness, so that the modularized matrixes have good water permeability and high porosity, are not easy to block and are convenient to install; if the wetland is blocked, the modularized matrix can be directly replaced, is regular in shape, easy to detach and carry and convenient to replace, reduces the time for stopping the bed compared with the traditional mode, and greatly reduces the engineering quantity and labor cost caused by replacing the matrix;

2. specific microorganisms are fixed on the modular matrix, and the microorganisms perform metabolic activity under aerobic conditions, so that the removal rate of organic matters, nitrogen and phosphorus in sewage is improved, and the water treatment effect of the artificial wetland is enhanced;

3. the water collecting area drain pipe is provided with the liquid level regulator, so that the water level of the system can be conveniently regulated, the wetland can be cleaned by opening the high-low liquid level of the liquid level regulator and the emptying pipe, the maintenance difficulty of the wetland is greatly reduced, the blockage of the wetland is slowed down, and the replacement period of the matrix is effectively prolonged.

Drawings

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

FIG. 2 is a schematic structural view of an embodiment of a modular substrate.

Wherein, 1-water inlet area; 2-modular artificial wet area; 3-a water collecting area; 4-water inlet pipe; 5-water distribution pipe; 6-a water collecting pipe; 7-a drain pipe; 8-emptying the pipe; 9-a liquid level regulator; 2-1-a base matrix; 2-2-modular substrate; 2-21-plant growing holes.

Detailed Description

The technical scheme of the invention is further described in detail by combining the drawings and the specific examples as follows:

as shown in the attached figure 1, for the utility model discloses a sewage treatment system based on modularization constructed wetland's a concrete example, it includes into water district 1, modularization artifical wet area 2, catchment area 3 and pipe-line system. The modular artificial wet area 2 may comprise 1 or more artificial wet land modules, and the differential filling is adopted: filling a basic matrix 2-1 with a certain thickness at the lower layer of each artificial wetland module, wherein the basic matrix is one or a combination of more of gravel, ceramsite, zeolite, aluminum sludge and the like; the surface layer is filled with a modularized matrix 2-2, and the modularized matrix is a permeable matrix module which is made and formed by an inorganic matrix or an organic matrix and has high porosity and a regular shape; the pipeline system comprises a water inlet pipe 4 and a water distribution pipe 5 which are connected with a water inlet area 1 and a modularized artificial wet area 2, a water collecting pipe 6 and a water discharging pipe 7 which are connected with the artificial wet area and a water collecting area, and an emptying pipe 8 arranged in the water collecting area. The water distribution pipe 5 and the water collection pipe 6 are perforated pipes, and the perforation mode is that the inclined lower opposite sides are staggered perforated; the tail end (namely the water outlet end) of the water discharge pipe 7 is provided with a liquid level regulator 9, the water level of the system can be flexibly regulated, and the functions of water quantity regulation, wetland backwashing and the like are achieved.

The thickness of the modularized substrate is 5-30 cm; the water-permeable anti-blocking agent is arranged on the surface layer of the wetland, and has a certain anti-blocking effect due to good water permeability and high porosity; because the modular matrix has a loose and porous structure, specific water-purifying microorganisms such as candida, bacillus cereus, pseudomonas and the like can be fixed in modes of surface biological modification, soaking, mixed culture and the like and are positioned on the surface layer of the wetland, and the aerobic environment formed in pores can activate the immobilized microorganisms, degrade pollutants such as organic matters, nitrogen, phosphorus and the like in sewage and strengthen the water treatment effect of the artificial wetland;

as shown in figure 2, a plurality of plant growing holes 2-21 can be reserved in the modularized substrate, so that wetland plants can be planted and positioned conveniently, and the wetland plants can be selected from Thalia dealbata, canna, calamus and the like, so that the modularized substrate has the function of beautifying the environment while enhancing the treatment effect.

When the system normally operates, the emptying pipe 8 is blocked. Sewage flows through the water distribution pipe 5 from the water inlet area 1 through the water inlet pipe 4 and is uniformly distributed on the front section of the artificial wet area 2, the concentration of organic matters and nitrogen and phosphorus pollutants in the sewage is reduced through the filtering action of the modular matrix 2-2 and the basic matrix 2-1 and the degradation action of microorganisms attached to the matrix, the sewage is purified, and the purified sewage flows into the water collection area through the water collection pipe 6 and the water discharge pipe 7 to be treated or discharged in the next step.

When the treatment capacity of the system is reduced, the height of the tail end of the drain pipe is increased through the liquid level regulator, the water level of the wetland is slowly raised, fine particles or biological membranes blocked around the matrix are loosened, then the emptying pipe is opened, the liquid level regulator is adjusted to the lowest water level, the water level of the wetland sewage is instantly reduced under the action of gravity, and the fine particles and the aged biological membranes are discharged along with the sewage, so that the purposes of cleaning and dredging are achieved.

When the system is seriously blocked, the modularized matrix on the surface layer of the wetland is removed, and a new modularized matrix is installed, so that the blockage can be quickly solved, and the treatment capacity is recovered; the porosity of the disassembled modular matrix is recovered through natural air drying, and the modular matrix can be reused after being completely air dried.

The above embodiments are intended to illustrate the present invention, but not to limit the present invention, and any modifications and changes made to the present invention are applicable to the protection scope of the present invention within the spirit and scope of the claims.

Claims (7)

1. The sewage treatment system based on the modular artificial wetland is characterized by comprising a water inlet area, a modular artificial wet area and a water collecting area, wherein the modular artificial wet area is communicated with the water inlet area through a water distribution pipe and is communicated with the water collecting area through the water collecting pipe, the modular artificial wet area comprises one or more artificial wetland modules, a lower layer of each artificial wetland module is filled with a basic matrix, and a surface layer of each artificial wetland module is filled with a modular matrix.

2. The sewage treatment system based on the modular constructed wetland according to claim 1, wherein the modular matrix is a water-permeable matrix module with a regular shape.

3. The sewage treatment system based on the modular constructed wetland according to claim 1, wherein the thickness of the modular substrate is 5-30 cm.

4. The sewage treatment system based on the modular constructed wetland as claimed in claim 1, wherein microorganisms for assisting sewage treatment are immobilized in the modular substrate.

5. The sewage treatment system based on the modular constructed wetland as recited in claim 1, wherein the water collecting pipe is communicated with the water collecting area through a water discharging pipe, and the outlet at the tail end of the water discharging pipe is adjustable in height.

6. The sewage treatment system based on the modular constructed wetland as recited in claim 5, wherein a liquid level regulator is installed at the tail end of the drain pipe.

7. The sewage treatment system based on the modular constructed wetland according to claim 1, wherein the water distribution pipes and the water collection pipes are perforated pipes.

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