CN218491558U - Biological trickling filter bag and system for household washing wastewater treatment - Google Patents

Abstract

The utility model provides a bio-trickling filter package and system for dividing family formula washing wastewater handles, make into the cloth in advance that inside has the separate layer, the outside has the bag of suspender, below the filler form bio-trickling filter in the bag below the separate layer, the filler forms the buffer memory packing layer more than the separate layer in the bag, the water that gets into the buffer memory packing layer passes through the cloth water distribution uniformity to the bio-trickling filter layer of separate layer, bio-trickling filter effect through taking place in the bio-trickling filter layer carries out purification treatment, water after the processing is in situ to permeate lower part soil horizon in order to realize final drainage. The bag is low in manufacturing cost, so that the bag can be used as a packaging material for internal fillers and a material for modularized shaping of the bio-trickling filter, has the composite advantages of reducing the packaging and transportation cost, the standardized prefabrication cost of the bio-trickling filter, the installation cost of the bio-trickling filter system and the like, and is particularly suitable for treatment of dispersed domestic sewage in application scenes such as rural areas.

Description

Biological trickling filter bag and system for household washing wastewater treatment

Technical Field

The utility model provides a device that is arranged in handling the washing waste water who discharges and the drainage in to the life, especially relates to a bio-trickling filter package that is used for the family style washing waste water to handle, in addition the utility model discloses still include a system that uses the family style washing waste water that bio-trickling filter package and handle.

Background

The method for treating the household sewage is suitable for buildings which are dispersed in living and are difficult to discharge domestic sewage into a municipal drainage system which is built uniformly. The method is beneficial to reducing the cost of drainage and sewage treatment. The washing wastewater mainly refers to the wastewater generated by taking washing as the main purpose in life, such as the wastewater of bathing, washing and the like, occupies most of the domestic wastewater in terms of water discharge, has low concentration of pollutants, particularly the pollutants containing nitrogen and phosphorus hardly need to be treated so as to meet the standard requirement of sewage discharge, and is a good choice for purifying the washing wastewater of a single household or an independent building by a method of arranging a biological trickling filter bed underground and then discharging the washing wastewater into an underground soil layer in situ or recycling the washing wastewater. The technical specification CECS 294 of layered bio-trickling filtration (MBTF) for rain and sewage treatment (MBTF) standardizes the process flow, the process unit setting, the installation and debugging, the operation and maintenance and the like of the process for treating rain and sewage with large water amount by using a bio-trickling filtration method, but the system setting is more complex and has higher cost, and the method is not suitable for single household drainage. Therefore, the utility model provides a bio-trickling filter bag device and a sewage treatment system thereof, which are used for purifying the washing wastewater discharged by a single household or an independent building so as to meet the purpose of in-situ drainage or recycling.

SUMMERY OF THE UTILITY MODEL

The utility model provides a biological trickling filter package for dividing family formula washing wastewater treatment, its appearance is the column body by the cloth parcel, including last bottom surface, interior division face, lower bottom surface, side, wherein have evenly distributed's micropore that can allow water and gas to pass through on interior division face and the lower bottom surface, interior division face divides the column body into the cushion chamber that is located upper portion and the trickling filter chamber that is located the below, fill buffering biofilm carrier in the cushion chamber, pack trickling filter biofilm carrier in the trickling filter chamber, set up the input port that can be used for inserting pending water on last bottom surface or the side that surrounds the cushion chamber, this input port allows gaseous entering or discharge biological trickling filter package simultaneously. The bulk density of the buffering biological filler and the trickling filtration biological filler is more than 200 kg/cubic meter, and the granularity is less than 30mm.

Further, a bio-trickling filter package for being divided family formula washing wastewater treatment, make into the sack unanimous with the column body with the cloth in advance, the sack includes last feed inlet, interior feed inlet, lower bottom surface, a side, the area of lifting by crane, when loading the filler, earlier load the trickling filter biofilm carrier through interior feed inlet, treat that the trickling filter chamber is full of the back, with interior feed inlet seal formation interior plane of separation, then load the buffering biofilm carrier through outer feed inlet again, treat that the cushion chamber is full of the back and seal outer feed inlet and form the bottom surface, the area of lifting by crane is fixed on the side, be used for in transportation and installation to lift by crane bio-trickling filter package.

Bulk materials having a specific gravity of greater than 200 kg/cubic meter and a particle size of less than 30mm are suitable for use as a filler in an underground biological trickling filter. The general method for setting the biological trickling filter bed is that an installation pit is excavated underground, then the pit is filled with the dispersive materials, then a uniform water distribution layer is arranged above a packing layer, a layer of the dispersive materials is laid above the uniform water distribution layer and is connected with the washing wastewater to be treated, and finally soil covering or no soil covering is carried out. When used for rural sewage treatment, each household needs about 1 cubic meter of material. The method for directly using the bulk materials and installing the underground biological trickling filter on site has the defects of high requirement on the quality of constructors and difficulty in controlling the construction quality. The core innovation of the utility model is to modularize and finalize the bio-trickling filter bed by using the cloth bag with the inner separation layer, thereby effectively overcoming the defects. The separation layer is made of cloth with micropores, so that the requirement of a biological trickling filter process on uniform water distribution can be met, and compared with the common water distribution technology, the cost is lower. The bulk materials used in bio-trickling filter beds are a large group of low value materials and the transportation and transfer costs from the source of production to the final installation of these materials into the formation are significant in the overall cost of the underground trickling filter setup. During the transportation and transfer of materials, the materials are usually loaded and unloaded many times by manpower. The cost of manpower loading and unloading often occupies a large part of the transportation and transfer cost, and the cost of manpower transportation is higher and higher along with the development of the society. Adopt the utility model discloses a prefabricated cloth bag can be directly just will pile the shaping of decentralization material package in raw and other materials production end to be convenient for load and unload the operation with machinery at subsequent all transports and shift in-process, reduce artifical handling cost, this is the utility model discloses an another big advantage that the innovation was brought.

The utility model discloses only require inside separate layer and lower bottom surface must use the cloth of water-permeable, go up bottom surface and side and do not restrict the use and permeate water or waterproof cloth, the actual manufacture process is certainly to use the material the same with interior separate layer more economical. Water has a natural tendency to move downwards under the action of gravity, but water entering the bio-trickling filter bag may also enter the formation through the permeable side, and since the soil also has the ability to filter and purify water, no special restrictions need to be taken on the small amounts of water that penetrate into the soil through the side.

The utility model provides an outside is cloth, inside for having the biological trickling filter package of the bulk material of heap of certain bulk density and granularity, and wherein the cloth bag cost of manufacture is low, and the rigidity exterior packaging material and the method far more general are with low costs. When the bio-trickling filter is embedded underground, the bio-trickling filter bag has a supporting function on the stratum, is wrapped by the stratum and forms a water storage space and a reaction space together with pores among the filler particles, so that the requirements of sanitary drainage and sewage treatment can be met simultaneously. The design of the container with a stable interior space and a strong support capacity for the exterior without the need for an external rigid container is particularly suited to the needs of packaging transportation and underground installation, facilitating cost reduction. Generally, when the exterior is a rigid material, measures are taken to prevent the rigid surface from being crushed or broken during transportation and installation. The bio-trickling filter bag for the household washing wastewater treatment does not have the worry. The purpose of providing a lifting strap on the cloth bag is to facilitate handling of the bio-trickling filter bag by lifting during transport and installation.

The bio-trickling filter bag for household washing wastewater treatment is mainly used for treating the washing wastewater discharged in life. Due to the low concentration of pollutants in the water to be treated, wherein biologically utilizable pollutants are decomposed, even if trace amounts of non-decomposable substances enter the interior of the bio-trickling filter bag, the bio-trickling filter bag will not be blocked within the designed life span (usually 15-25 years). The biological trickling filter bag which is blocked can be dug out, cleaned and then installed, the purchase cost of the biological trickling filter bag is not high, the installed biological trickling filter bag can be abandoned, and a new trickling filter bag can be additionally installed

The washing waste water discharged from indoor is firstly automatically flowed into preprocessor to remove solid impurity, the outlet water of preprocessor is automatically flowed into input port of biological trickling filter bag, the described biological trickling filter is embedded in the ground near the water outlet of preprocessor, and the water treated by biological trickling filter bag is discharged into the stratum under the ground.

The pre-processor is mainly used for removing solid impurities in water to be treated and preventing the impurities from entering the bio-trickling filter bag to cause blockage. The preprocessor is usually provided with a slag removing port, which is convenient for removing slag regularly.

Further, a system for family formula washing wastewater treatment who contains above-mentioned bio-trickling filter package sets up out water collection device in bio-trickling filter package below, is convenient for recycle the play water.

Furthermore, a system for household washing wastewater treatment containing the biological trickling filter packet comprises a through pipe vertically placed above the upper bottom surface of the biological trickling filter packet, the bottom end of the through pipe penetrates through the upper bottom surface of the biological trickling filter packet to be in contact with a buffer packing layer, the top end of the through pipe is exposed out of the ground, a water inlet is arranged in the middle of the through pipe, a bulk material is filled in the through pipe below the water inlet, washing wastewater discharged from a room enters the through pipe through the water inlet, then enters the biological trickling filter packet through the bulk material filled in the through pipe and a contact surface of the bulk material and the upper bottom surface of the biological trickling filter packet, and the through pipe is simultaneously used as a channel for exchanging the biological trickling filter packet with the external atmosphere.

Designing the preconditioner as a tube to the atmosphere filled with bulk material (e.g., gravel) and placed above the bio-trickling filter package further reduces the set-up costs of the above-described system for the treatment of household wash wastewater. The piled materials filled below the water inlet can play a role in pre-treatment for intercepting sundries, and prevent impurities from entering the biological trickling filter bag arranged underground to cause blockage. The top end of the preprocessor is higher than the ground, the filled gravels have a large number of pores, and especially under the condition of no water inlet, the air on the ground surface can enter the interior of the bio-trickling filter bag to reoxygenate the ceramsite layer filled in the interior of the bio-trickling filter bag, thereby being beneficial to improving the function of biodegradation.

Further, the bio-trickling filter bag in the system for treating household washing wastewater and the pre-processor are covered with heap materials to strengthen the exchange between the interior of the bio-trickling filter bag and the surface atmosphere.

Covering the bio-trickling filter bag with the bulk material instead of soil above the bio-trickling filter bag increases the amount of the bulk material, but improves the oxygenation of the bio-trickling filter bag.

Through the biotrickling filter bag for household washing wastewater treatment and the system thereof can greatly reduce the cost of washing water drainage and purification treatment of household or independent buildings, and are particularly suitable for the scene of rural sewage treatment.

The above description is only an outline of the technical solution of the present invention, and in order to make the technical means of the present invention more clearly understood and to embody the same in accordance with the content of the specification, the embodiments of the present invention are described in detail below.

Drawings

FIG. 1 is a perspective and sectional view of a bio-trickling filter cartridge for household washing wastewater treatment; FIG. 2 is a cross-sectional view of a bio-trickling filter for use in the treatment of household wash wastewater; FIG. 3 is a perspective external view of the bag;

FIG. 4 is a perspective cross-sectional view of the bag; fig. 5 is an installation diagram of a bio-trickling filter for household washing wastewater treatment.

In the figure, a lifting belt is 1, a bag is 2, an upper bottom surface is 3, a buffer cavity is 4, an inner separation surface is 5, a side surface is 6, a trickling filter cavity is 7, a lower bottom surface is 8, an outer feeding port is 9, an inner feeding port is 10, an input port is 11, a preprocessor is 12, a preprocessing filler is 13, and a sewage input pipe is 14.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

Referring to the drawings, the present embodiment discloses a bio-trickling filter packet, which is shaped like a rectangular parallelepiped wrapped by cloth, and has a height, length, width, and a height of about 90cm, 80cm. The cloth is woven material cloth, and the buffer filler and the bio-trickling filter filler filled inside are ceramsite with bulk density of 450 kg/cubic meter and granularity of less than or equal to 30mm. In this embodiment, the bag 2 is made of woven fabric by sewing, the main body of the bag 2 is a rectangular parallelepiped with height, length, width =90cm, 80cm, the input port 11 is arranged at the center of the upper bottom surface 3, the outer feed port 9 is sewn at the upper bottom surface 3, the inner feed port 10 is sewn at the center of the inner partition surface 5, and the sling 1 is fixed in advance at the side surface 6. When the bio-trickling filter bag is manufactured, firstly, ceramsite is filled to the height position of the suture line of the inner feed port 10 through the inner feed port 10, the inner feed port 10 is folded and paved inwards to form the side surface 6 of the trickling filter bag, then, the ceramsite is continuously filled on the inner partition surface 5 through the outer feed port 9 to the height of the upper edge of the side surface 6, and finally, the outer feed port 9 is folded and paved inwards to form the upper bottom surface 3 of the bio-trickling filter bag. The rated processing capacity of the underground biological trickling filter of the embodiment is 500 liters/day, the rated maximum inflow flow rate is less than or equal to 100 liters/10 minutes, and the rated inflow concentration: COD is less than or equal to 300mg/L, TN is less than or equal to 15mg/L, and TP is less than or equal to 1mg/L, and the method is suitable for the washing wastewater treatment of 3-5 families in a rural area.

Before a system wastewater treatment system is arranged, firstly, washing wastewater and other wastewater are drained indoors in different openings and are connected to the outdoors through pipelines, then a biological trickling filter bag installation pit is excavated near an outdoor drainage opening, the height and the width of the installation pit =140cm 100cm, after the biological trickling filter bag is placed in the installation pit in a mechanical hoisting mode, soil is returned around the biological trickling filter bag, then a PVC pipe with the height of 700mm and the pipe diameter of D300 is placed in the center of the biological trickling filter bag to serve as a main body of a preprocessor 12, a PVC pipe water inlet of D110 is arranged in the middle of the PVC pipe, the center of the water inlet is 35cm away from the bottom surface, a washing wastewater drainage pipe and the water inlet are connected, gravels are filled below the lower edge of the water inlet to serve as a preprocessing filler 13, and the periphery of the preprocessor 12 and the upper side of the biological trickling filter bag are covered with soil until the water inlet is flush with the ground.

In the embodiment, biofilm formation is performed on the surface of the filler filled in the biological trickling filter system in a natural growth mode, and the time for completely starting the biological trickling filter system is about 3 months.

A bio-trickling filter package for dividing family formula washing wastewater treatment, through the setting of wrapping bag 2, made things convenient for transport and the installation work of operating personnel to this bio-trickling filter package. Meanwhile, an inner partition surface 5 is provided in the bag 2 so that the inner cavity of the bag 2 can be partitioned into a buffer chamber 4 for filling the buffered biological filler and a drip filter chamber 7 for filling the drip filter biological filler. And the micropores distributed on the surface of the inner partition surface 5 enable the washing wastewater in the buffer chamber 4 to drop into the trickling filter chamber 7 below the buffer chamber in the form of small droplets through the micropores. And the setting of buffering biofilm carrier has realized depositing and prefiltering washing wastewater's buffering, trickling filter biofilm carrier's setting for by the droplet of micropore output, can drip and strain in trickling filter chamber 7, thereby further realize the processing and the filtration to sewage.

The bio-trickling filter bag realizes the integral packaging of all fillers and components through the bag 2, so that the bio-trickling filter bag is very suitable for the dispersed living application in rural areas. When the bag is used, an operator only needs to place the whole bag 2 in an installation pit dug beside a residential house and connect the bag with a washing wastewater outlet through a corresponding pipeline, and the operation is very convenient.

The washing wastewater discharged from the living room first enters the preprocessor 12 through the wastewater input pipe 14, is buffered and freed of suspended impurities, and then enters the buffer packing layer. When the water volume is larger for a short time, the buffer filling layer can buffer the water and uniformly distribute the water to the bio-trickling filter layer through the micropores on the internal separation surface. Because the biological trickling filter layer is filled with the light ceramsite, the ceramsite is internally provided with a large number of micropores which have retention effect on water migrating downwards, organic matters, ammonia nitrogen and total nitrogen in the washing wastewater are removed through the degradation effect of a biological film growing on the ceramsite, and total phosphorus is removed through the adsorption effect on the surface of the ceramsite. All the filler layers have the function of removing suspended matters in the washing wastewater. The effluent passing through the lower bottom surface 8 of the bio-trickling filter bag can continue to be purified through the soil layer below.

Therefore, the system for treating the household washing wastewater replaces all functions of a water collecting well, an adjusting tank, a bio-trickling filter module, a tail water collecting well, a pump station, a subsequent wetland purification system and the like which are required to be independently built in the conventional bio-trickling filter method, and is simple, practical and low in cost.

It should be noted that the system for treating household washing wastewater is suitable for the functional requirements of drainage, treatment and discharge of washing wastewater of buildings such as free-standing residences, and can be used for drainage, treatment and discharge of other wastewater, such as reducing environmental protection requirements, although the system is not recommended to be used for drainage, treatment and discharge of other wastewater.

The above are only preferred embodiments of the present invention, which are used to assist the skilled person in realizing the corresponding technical solutions, and are not used to limit the protection scope of the present invention, which is defined by the appended claims. It should be noted that, for those skilled in the art, on the basis of the technical solutions of the present invention, several modifications and variations can be made, and these modifications and variations should also be regarded as the protection scope of the present invention. Also, it should be understood that although the present description has been described in terms of the above embodiments, not every embodiment may include only a single embodiment, and such description is for clarity only, and those skilled in the art will recognize that the description is taken as a whole, and that the embodiments may be suitably combined to form other embodiments as will be appreciated by those skilled in the art.

Claims (6)

1. A bio-trickling filter package for household washing wastewater treatment, which is characterized in that: the appearance is a cylindrical body wrapped by cloth, and the cylindrical body comprises an upper bottom surface, an inner separation surface, a lower bottom surface and side surfaces, wherein micropores which are uniformly distributed and can allow water and air to pass through are formed in the inner separation surface and the lower bottom surface; the upper bottom surface or the side surface surrounding the buffer cavity is provided with a water inlet to be treated.

2. The bio-trickling filter cartridge of claim 1 for use in household washing wastewater treatment, wherein: the bulk specific gravity of the buffering biological filler and the trickling filtration biological filler is more than 200 kg/cubic meter, and the granularity is less than 30mm.

3. A system for household washing wastewater treatment, characterized by: a preprocessor is arranged in front of the bio-trickling filter bag; washing wastewater discharged from a room automatically flows into a preprocessor to remove solid impurities, and effluent of the preprocessor automatically flows into an input port of a bio-trickling filter bag; the water treated by the bio-trickling filter bag is discharged into the stratum below in situ.

4. The system for household washing wastewater treatment of claim 3, wherein: the preprocessor comprises a straight-through pipe vertically placed above the upper bottom surface of the biological trickling filter bag, the bottom end of the straight-through pipe penetrates through the upper bottom surface of the biological trickling filter bag to be contacted with the buffer packing layer, the top end of the straight-through pipe is exposed out of the ground, a water inlet is arranged in the middle of the straight-through pipe, the straight-through pipe below the water inlet is filled with piled and dispersed materials, washing wastewater discharged from an indoor enters the straight-through pipe through the water inlet, then enters the biological trickling filter bag through the piled and dispersed materials filled in the straight-through pipe and a contact surface between the piled and the upper bottom surface of the biological trickling filter bag, and the straight-through pipe is simultaneously used as a channel for exchanging the biological trickling filter bag with the external atmosphere.

5. The system for household washing wastewater treatment according to claim 3, wherein: and covering the bio-trickling filter bag and the periphery of the preprocessor with the bulk material.

6. The system for household washing wastewater treatment of claim 3, wherein: a water outlet collecting device is arranged below the biological trickling filter bag, so that the discharged water is convenient to recycle.

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