CN214141802U - Multistage sewage filter - Google Patents

Abstract

The utility model discloses a multistage sewage filter, include: the sewage filter comprises a sewage containing box and a filter packing box, wherein the sewage containing box is provided with a water inlet pipe, the filter packing box is provided with a water outlet pipe, the bottom of the sewage containing box is provided with a through hole, and the filter packing box is arranged below the sewage containing box and is communicated with the sewage containing box through the through hole; a tubular filter column is arranged at the position, covered by the through hole, of the bottom of the sewage containing box, an inner through pipe of the filter column is communicated with the through hole, sewage enters from the outer wall of the filter column, flows to the inner through pipe from the inner wall after being filtered by the filter column, and then flows to the filter stuffing box from the through hole; the filtering stuffing box is respectively provided with an empty layer, a fine sand filtering layer and a coarse sand filtering layer from top to bottom, and the water outlet pipe is positioned at the coarse sand filtering layer. Utilize the multistage filtering principle, can also handle sewage, purify water quality when depositing excessive sewage in sewage holding box, reduce sewage discharge.

Description

Multistage sewage filter

Technical Field

The utility model belongs to the technical field of sewage treatment technique and specifically relates to a multistage sewage filter is related to.

Background

In recent years, China's society is developed at a high speed, industry-related industries are developed vigorously, the living standard of people is improved day by day, and meanwhile, a large amount of polluted waste is generated, wherein industrial sewage and domestic sewage occupy a large part of the polluted waste, and untreated discharged sewage affects local water quality and further harms human health. Sewage treatment has always been a concern for the relevant practitioners. The sewage regeneration effectively relieves the contradiction between supply and demand between people and water resources, and is an effective way for saving fresh water resources. At present, the domestic sewage treatment system is mainly characterized in that sewage is purified by a sewage treatment plant and then discharged, but the sewage treatment rate is generally low, the treatment period is longer, the floor area of the sewage treatment plant is larger, a large amount of electric power resources are consumed, the sewage treatment plant is not suitable for moving after being built, and the flexibility is poor; physical water purification, chemical water purification and biological water purification are basic methods for sewage treatment, but the forms are single, and the treatment effect is limited.

The multi-layer filtration is a filtration method which combines various filtration methods and adopts multi-layer filter materials to achieve the purpose of sewage treatment. The standing precipitation is a natural precipitation that separates insoluble impurities from water by gravity, and is a simple primary filter that is slow and widely used. The process of filtering and removing impurities is complex, and the filter material is an important factor influencing the filtering effect. The single-layer filter material is generally quartz sand filter material, and the earlier sewage treatment plant filter tank mostly adopts a filter bed formed by the single-layer filter material, but only can play a role in surface filtration, and the filtering effect is poor; the selection of the particle size and the thickness of the filter material has an important influence on the filtering effect, the multilayer mixed filter material considers the arrangement of the particle composition and the specific gravity of the filter material, the whole filter bed is fully utilized as far as possible, and the filtering speed and the purified water quality are improved.

The movable sewage containing box is combined with a multi-layer filtering principle, and the box body has the function of temporarily storing a certain amount of sewage, so that the condition of sewage backflow caused by the blockage of a filtering system is avoided; the sewage in the box body is purified orderly through multiple filtering devices, and the storage-purification integration of sewage treatment is realized. The movable characteristic of the box body provides convenience for water quality treatment of dynamic pollution sources, saves cost while reasonably utilizing space, and accords with the instruction of China on the pollution prevention and control plan of ecological environment-friendly working water.

At present, a small-sized movable sewage treatment device which integrates sewage collection and purification is not available.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: in order to overcome the not enough of background art, the utility model discloses a multistage sewage filter can remove the place operation that has the requirement to play water quality of water, utilizes the multiple-layer filtering principle, and temporary storage sewage can obtain purifying by the very fast after sewage flows in.

The technical scheme is as follows: multistage sewage filter, include: the sewage filter comprises a sewage containing box and a filter packing box, wherein the sewage containing box is provided with a water inlet pipe, the filter packing box is provided with a water outlet pipe, the bottom of the sewage containing box is provided with a through hole, and the filter packing box is arranged below the sewage containing box and is communicated with the sewage containing box through the through hole;

a tubular filter column is arranged at the position, covered by the through hole, of the bottom of the sewage containing box, an inner through pipe of the filter column is communicated with the through hole, sewage enters from the outer wall of the filter column, flows to the inner through pipe from the inner wall after being filtered by the filter column, and then flows to the filter stuffing box from the through hole;

the filtering stuffing box is respectively provided with an empty layer, a fine sand filtering layer and a coarse sand filtering layer from top to bottom, and the water outlet pipe is positioned at the coarse sand filtering layer.

Furthermore, the filtering column is sequentially provided with a ceramsite-quartz sand filtering layer and a zeolite filtering layer from the outer wall to the inner wall.

Further, the ceramsite-quartz sand filtering layer is formed by mixing ceramsite with the particle size of 2-5mm and quartz sand with the particle size of 1-2mm according to the mass ratio of 1: 1; the zeolite filter layer medium is zeolite with the particle size of 1-2 mm.

Furthermore, the zeolite filter layer is internally added with washed and dried lumpy peat and powdered copper-zinc alloy.

Furthermore, the inner wall and the outer wall of the filter column are water permeable walls, wherein the bottom of the outer wall is provided with a section of water impermeable pipe wall.

Furthermore, a screen is arranged at the through hole.

Further, the height of the empty layer is 10% of the height of the filter stuffing box, and the height of the fine sand filter layer is 35% of the height of the filter stuffing box.

Further, the fine sand filtering layer is a quartz sand and zeolite mixed filler, and the mass ratio of the quartz sand to the zeolite mixed filler is 1:3, wherein the diameters of the quartz sand and the zeolite particles are both between 0.5 and 1 mm; the coarse sand filtering layer is made of active carbon and coarse quartz sand mixed filler in a volume ratio of 1:3, wherein the particle diameter of the coarse quartz sand is 2-4 mm.

Furthermore, the inner diameter of the water outlet pipe is larger than that of the water inlet pipe.

Has the advantages that: compared with the prior art, the utility model has the advantages that: (1) by utilizing the multi-stage filtering principle, the excess sewage can be stored in the sewage containing box, and meanwhile, the sewage can be treated, the water quality can be purified, and the sewage discharge can be reduced; (2) sewage holds the case both can regard as the temporary storage place of sewage, can carry out initial stage sedimentation treatment to the pollutant again, deposits the large granule part in the sewage, effectively avoids the granule to block up the filter column. In addition, the bottom sieve can be taken out under proper conditions periodically to remove particle impurities precipitated by pollutants; (3) the filter column is second-stage treatment equipment of the sewage containing box and is mainly used for removing grease, heavy metals, partial nutrient substances and bacteria in the sewage; the sewage is treated in the second stage, so that the premature failure of a filter medium applied in the filter stuffing box in the third stage is effectively avoided, and the service life of the device is prolonged; the filter column is convenient to clean and replace periodically; (4) the filtering stuffing box is the third stage of sewage treatment of the device, and heavy metals, nutrient substances and bacteria which cannot be intercepted in the sewage after passing through the filtering column are removed, so that the sewage reaches the standard of direct discharge; (5) after the sewage is filtered by the sewage containing box, the sewage is discharged into the water delivery pipe through the filtered water outlet pipe, and the purified water is delivered to a water using area, so that the utilization rate of water resources is improved, and the pressure of water resource shortage in China is relieved.

Drawings

FIG. 1 is a perspective view of the present invention;

fig. 2 is a sectional view of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

The multistage sewage filter shown in fig. 1 and 2 includes: sewage holds case 1 and filtration stuffing box 2, sewage holds case 1 and is equipped with inlet tube 101, filtration stuffing box 2 is equipped with outlet pipe 201, the internal diameter of outlet pipe 201 is greater than inlet tube 101 internal diameter. The diameter of the water inlet pipe 101 is set to be 15cm, and the water inlet pipe is communicated with the sewage containing box 1 from the circle center to the bottom of the sewage containing box 1 by 20cm, and the water is lifted by a small water pump due to the fact that the position of the water inlet pipe 101 possibly has a height difference with the incoming sewage. The diameter of outlet pipe 201 sets up to 20cm, and the size slightly is greater than the sewage inlet tube, avoids filtering in the water retention case, and the timely discharge of the drainage of being convenient for improves the purification efficiency of whole device. The water outlet pipe is communicated with the filtering filler box from the circle center to the position 20cm away from the bottom of the filtering filler box.

Through-hole 3 is seted up to sewage containing box 1 bottom, filter stuffing box 2 locates sewage containing box 1 below, holds box 1 intercommunication through-hole 3 and sewage. The position that sewage held case 1's bottom cover through-hole 3 is equipped with pipy filter column 4, siphunculus and through-hole 3 intercommunication in the filter column 4, sewage gets into by filter column 4 outer wall, flows to interior siphunculus by the inner wall after filtering through filter column 4, flows to filtration filling box 2 by through-hole 3 again. The through hole 3 with the diameter of 20cm is positioned in the center of the bottom of the sewage containing box, and the sewage box can perform initial precipitation treatment on pollutants when being used as a temporary sewage storage place, so that large particles in partial sewage are precipitated, and the filter column 4 is prevented from being blocked by the particles. The whole size can be adjusted according to the change of the demand of domestic sewage treatment.

The filtering column 4 is divided into an inner through pipe and an outer diameter pipe, and the height of the column is set to be 0.8m as the same as that of the sewage containing box. The filtering column 4 is sequentially provided with a ceramsite-quartz sand filtering layer 401 and a zeolite filtering layer 402 from the outer wall to the inner wall. The ceramsite-quartz sand filtering layer 401 is formed by mixing ceramsite with the particle size of 2-5mm and quartz sand with the particle size of 1-2mm according to the mass ratio of 1:1, and is used as second-stage treatment equipment of the integral device to mainly remove grease, heavy metals, partial nutrients and bacteria in sewage, and simultaneously prolong the service life of a filtering medium of a filtering stuffing box in the third stage; the zeolite filter layer 402 medium is zeolite with a particle size of 1-2 mm. The zeolite filter layer 402 is added with washed and dried lumpy peat and a small amount of powdered copper-zinc alloy. The inner wall and the outer wall of the filter column 4 are permeable walls, wherein the bottom of the outer wall is provided with a section of impermeable pipe wall 403, namely the upper part of the outer wall is permeable, the lower part is impermeable, preferably 50cm permeable and 30cm impermeable, sewage enters from the water inlet pipe 101 and is firstly precipitated in one stage, and then enters the filter column 4 from the permeable part at the upper part of the outer wall, the through hole 3 is provided with a screen 8, and the screen 8 can be directly and completely paved at the bottom of the sewage containing tank and is used for removing particle impurities precipitated at the bottom of the sewage containing tank.

The size of the filter stuffing box 2 is consistent with that of the sewage containing box 1, wherein the filter stuffing box is communicated with the filter columns through the through holes 3, a screen 8 is arranged at the communication position, three layers are divided in the filter stuffing box 2 and are respectively arranged as a hollow layer 5, a fine sand filter layer 6 and a coarse sand filter layer 7 from top to bottom, and the water outlet pipe 201 is positioned at the coarse sand filter layer 7.

The height of the empty layer 5 is 10% of the height of the filter stuffing box 2, and the height of the fine sand filter layer 6 is 35% of the height of the filter stuffing box 2. The fine sand filtering layer 6 is a quartz sand and zeolite mixed filler, and the mass ratio is 1:3, wherein the diameters of the quartz sand and the zeolite particles are both between 0.5 and 1 mm; the coarse sand filter layer 7 is a mixed filler of activated carbon and coarse quartz sand, the volume ratio is 1:3, and the particle diameter of the coarse quartz sand is 2-4 mm.

Through this device, can realize the collection and the processing of sewage, specifically include following work flow.

The working process is as follows: sewage is recycled through treatment of sewage containing box

Sewage comes the water natural inflow sewage inlet tube, perhaps comes water to have under the condition of height difference when sewage inlet tube and sewage, uses little water pump to carry water and gets into sewage and hold the incasement, only under the action of gravity, does not subside the back with the help of the big granule pollutant in the incasement sewage of external force, sewage inflow filter column, high-efficient environmental protection when reducing the energy consumption. The impervious part of filter column external diameter pipe effectively avoids filter column to be blockked up by the large granule. The sewage sequentially passes through the zeolite layer and the ceramsite-quartz sand layer in the filter column system from outside to inside, and grease, heavy metals, partial nutrients and bacteria in the sewage are removed. The double-layer filtering layer of the filtering column prevents the filtering stuffing box in the next stage from premature failure, and the service life is prolonged. After passing through the filter column, the sewage reaches the filter stuffing box through the screen. The sewage sequentially passes through an empty layer, a fine sand layer and a coarse sand layer in the stuffing box system from top to bottom. The top of the box body is provided with the empty layer, so that the situation that sewage blocks the screen of the mounting hole is effectively avoided, and the sewage treatment efficiency is improved; the fine sand and the coarse sand layer with the particle size difference of one order of magnitude are selected in sequence below the empty layer, heavy metal, nutrient substances and bacteria which are not intercepted after sewage flow passes through the filter column are mainly removed from the fine sand layer, the coarse sand layer avoids pollutants to block a filtered water outlet pipe when pollutants such as heavy metal omitted from the fine sand layer are removed, the service life of the drain pipe is prolonged, and the drain pipe is convenient to timely discharge and effectively utilize reclaimed water.

The movable characteristic of sewage containing box provides convenience for the water quality treatment of dynamic pollution sources, saves cost while reasonably utilizing space, and accords with the instruction of China on the pollution prevention and control plan of ecological environment-friendly working water. The size of the box body is set according to the field situation, and the sizes of all parts in the box are adjusted in proportion.

The industrial agriculture of China is developed rapidly, and a large amount of pollutants are generated while the economic assistance is achieved, wherein sewage occupies a large part, and the sewage discharge becomes a critical urgency for environmental protection. As a big population country in China, the per-capita water resource occupancy is only 1/4 which is the average level in the world, and the problem of water resource shortage promotes the related problems of sewage reuse in China. Through the biological sewage after sewage holds the case processing, reach direct discharge standard, the recycled water can directly discharge or be used for washing ground, washing, watering flowers, if the recycled water satisfies the production needs, can also directly recycle in the production.

Table one: experimental data sheet for treating sewage by using filter

As can be seen from the experimental data in table one: the filter has excellent filtering effect on suspended particles and heavy metal substances in sewage, the removal efficiency is basically more than ninety percent, and nutrient substances such as nitrogen, phosphorus, fluoride and the like are better filtered through the sewage containing box. From this it can be concluded that: movable sewage holds case based on the multiple-layer filtering principle has splendid treatment effect to sewage, effectively removes the pollutants in the sewage, behind the biological sewage treatment for dischargeable recycled water, discharges or recycles.

Claims (8)

1. A multi-stage sewage filter, comprising: the sewage filter device comprises a sewage containing box (1) and a filter stuffing box (2), wherein the sewage containing box (1) is provided with a water inlet pipe (101), the filter stuffing box (2) is provided with a water outlet pipe (201), the bottom of the sewage containing box (1) is provided with a through hole (3), and the filter stuffing box (2) is arranged below the sewage containing box (1) and is communicated with the sewage containing box (1) through the through hole (3);

a tubular filter column (4) is arranged at the position, which covers the through hole (3), at the bottom of the sewage containing box (1), an inner through pipe of the filter column (4) is communicated with the through hole (3), sewage enters from the outer wall of the filter column (4), flows to the inner through pipe from the inner wall after being filtered by the filter column (4), and then flows to the filter stuffing box (2) from the through hole (3);

filter stuffing box (2) and from top to bottom establish respectively to empty layer (5), fine sand filter layer (6) and coarse sand filter layer (7), outlet pipe (201) are located coarse sand filter layer (7) department.

2. The multi-stage sewage filter of claim 1 wherein: the filtering column (4) is sequentially provided with a ceramsite-quartz sand filtering layer (401) and a zeolite filtering layer (402) from the outer wall to the inner wall.

3. The multi-stage sewage filter of claim 2 wherein: the medium of the zeolite filtering layer (402) is zeolite with the grain diameter of 1-2 mm.

4. The multi-stage sewage filter of claim 3 wherein: the zeolite filter layer (402) is added with washed and dried lumpy peat and powdered copper-zinc alloy.

5. The multi-stage sewage filter of claim 2 wherein: the inner wall and the outer wall of the filter column (4) are water permeable walls, wherein the bottom of the outer wall is provided with a section of water impermeable pipe wall (403).

6. The multi-stage sewage filter of claim 1 wherein: and a screen (8) is arranged at the through hole (3).

7. The multi-stage sewage filter of claim 1 wherein: the height of the empty layer (5) is 10% of the height of the filter stuffing box (2), and the height of the fine sand filter layer (6) is 35% of the height of the filter stuffing box (2).

8. The multi-stage sewage filter of claim 1 wherein: the inner diameter of the water outlet pipe (201) is larger than that of the water inlet pipe (101).

Images