CN202465364U - Compound type biological carbon filtering device - Google Patents

Abstract

The utility model relates to a compound type biological carbon filtering device, and belongs to a device used for water treatment. The compound type biological carbon filtering device comprises a shell (1), wherein a water storage tank (2) is arranged above a shell inner cavity (1a), the upper part of the water storage tank is provided with an outlet (3), a water outlet of the lower part of the shell is connected with a water outlet pipe (4), and the water outlet pipe (4) is communicated with a water inlet at the lower part of the water storage tank (2) through a water pipe (5); the upper part of the shell inner cavity (1a) is provided with a water distributing pipe (8) connected with a water inlet pipe (7), and a biological activity carbon filtering layer (9), a supporting layer (10) and a secondary filtering layer (11) are sequentially arranged below the water distributing pipe (8) from top to bottom; and the supporting layer (10) is internally provided with a perforation air distributing pipe (13) connected with an air inlet pipe (12), the upper part of the shell is provided with an air pipe (14) communicated with the shell inner cavity (1a), and the water inlet pipe (7) is connected with a back washing drain pipe (15). Outlet water quality is improved, the structure is reasonable, the water after filtration treatment can realize back washing by self, and the operation is simple and convenient.

Description

Composite biochar filter

technical field

The utility model relates to an advanced treatment device in the process of water treatment and purification.

Background technique

The combination of biological activated carbon with ozone or oxygen can effectively treat pollutants in water. Notification number CN2873759Y document discloses a "composite biological filter", its structure includes a shell, a water distributor connected to the water inlet pipe on the top of the inner cavity of the shell, and a soft packing layer, Hard packing layer, microporous aerator at the bottom of the soft packing layer, perforated aerator at the bottom of the hard packing layer, backwash outlet pipe on the top of the shell, outlet pipe connected to the bottom of the shell, and backwash inlet pipe connected to the outlet pipe , The "composite biological filter" uses biochemical effects such as biological oxidation and biological flocculation, and physical and chemical effects such as micro-flocculation, adsorption, and filtration to complete the treatment of sewage. The disadvantage is that the amount of biological flocs in the water after the biological treatment of the soft packing layer increases, and the concentration of suspended solids in the mixed liquid is high. Without solid-liquid separation, it directly enters the hard packing layer, which is easy to cause the hard packing layer to harden. Blockage; since the water treated by the hard packing layer is directly discharged from the outlet pipe, the biofilm formed and shed during the treatment of the hard packing layer will be discharged with the water flow without being filtered, thus affecting the quality of the effluent water; in addition , set up a device for backwashing.

Utility model content

The purpose of this utility model is to propose a composite biochar filter device that can improve the quality of effluent water and has a reasonable structure, and can use the filtered water to realize backwashing by itself, and is easy to operate.

For the technical solution for realizing the purpose of the invention, please refer to the accompanying drawings.

It includes a housing 1 including an inner cavity 1a, a water storage tank 2 is arranged above the inner cavity 1a of the housing, an outlet 3 is provided on the upper part of the water storage tank, and a water inlet 6 is provided on the lower part of the water storage tank;

The water outlet at the bottom of the housing is connected to the water outlet pipe 4, and the water outlet pipe 4 communicates with the water inlet 6 at the bottom of the water storage tank 2 through the water pipe 5;

The upper part of the inner chamber 1a of the housing is provided with a water distribution pipe 8 connected to the water inlet pipe 7, and a biological activated carbon filter layer 9, a supporting layer 10, and a secondary filter layer 11 are sequentially arranged below the water distribution pipe 8 from top to bottom;

The supporting layer 10 is provided with a perforated air distribution pipe 13 connected to the air intake pipe 12, and the upper part of the housing 1 is provided with an air pipe 14 communicating with the inner chamber 1a of the housing.

The working process of the utility model is that after the treated water enters the water distribution pipe 8, the water distribution pipe 8 realizes uniform water distribution to the biological activated carbon filter layer 9 below, and the water enters the biological activated carbon filter layer in the form of downflow, and at the same time, the air enters The perforated air distribution pipe 13 is used to distribute air through the perforated air distribution pipe 13, and the air flow is upward, and through the diversion and guidance of the particles in the support layer 10, the biological activated carbon filter layer 9 is evenly aerated in the form of an upward flow, that is, the biological activated carbon filter layer 9 is evenly aerated. The reverse mixed flow state of gas and water is formed in the layer 9, and the activated carbon is in full contact with the water and the incoming air, and the adsorption capacity of the activated carbon is fully exerted. The increase of dissolved oxygen in water promotes the growth of microorganisms. The oxidative decomposition of microorganisms makes the adsorption capacity of activated carbon continuously restored. The adsorption of activated carbon makes microorganisms obtain rich nutrients and oxygen. The two promote each other to form a relatively stable state. Greatly enhance the ability of activated carbon to adsorb organic matter in water, so as to fully remove organic matter in water and effectively purify the treated water; the water treated by biological activated carbon filter layer 9 enters the secondary filter layer 11 through the supporting layer 10, and the secondary filter layer 11 The filter layer is to filter the biofilm shed by the biological activated carbon to improve the quality of the effluent water. The purified water flows into the water storage tank 2 through the water outlet pipe 4 at the lower part of the housing and through the water pipe 5, and then flows through the outlet at the upper part of the water storage tank 2. 3 flow out;

When backwashing is required, the water inlet pipe 7 is closed and the backwash drain pipe 15 is opened. Since the water in the water storage tank 2 is in a high-level state, the energy of the high-level water enters the inner cavity of the housing by itself or automatically by the water pipe 5 to realize Backwash the secondary filter layer 11, supporting layer 10, and biological activated carbon filter layer 9. During the backwashing process, the perforated air pipe 13 continues to enter the air, and the upwardly flowing airflow rises in the same direction as the backwashing water flow, and the airflow and water flow The combination realizes carrying out effective and quick backwash to support layer 10, bioactive carbon filter layer 9, and the water after backwash is discharged by backwash drainpipe 15.

Compared with the prior art, the technical effect that the utility model has is:

1. Since the secondary filter layer 11 is provided, the secondary filter layer 11 can filter the biofilm shed by the biological activated carbon and improve the quality of the effluent.

2. Since the water storage tank 2 is located above the inner chamber 1a of the shell, and the water outlet pipe at the bottom communicates with the water storage tank 2 on the upper part of the shell, the potential difference formed between the water storage tank 2 and the water distribution pipe 8 makes the inside of the shell The average pressure of the cavity 1a is greater than the pressure environment where the conventional aeration device is located, so it is beneficial to maintain the high activity of the biofilm in the biological activated carbon filter layer and improve the efficiency of removing organic matter in the water; and, because the water distribution pipe 8 directly enters the The biological activated carbon filter layer, due to the aeration effect of the air, can effectively improve the effect of biochar film formation, and the biological activated carbon filter layer is not easy to harden, which is beneficial to prolong its working cycle, reduce the frequency of backwashing, and reduce the water used for backwashing.

3. Since the water storage tank 2 is located above the inner cavity 1a of the housing, and the water storage tank 2 is connected to the water outlet pipe 4 at the lower part of the housing, the energy of the high-level water in the water storage tank 2 can be fully utilized to realize the The secondary filter layer 11, supporting layer 10, and biological activated carbon filter layer 9 are self- or automatically backwashed, and the structure is optimized. The structure of the backwashing system is reasonable and compact, which can greatly simplify the backwashing piping system and reduce manufacturing costs. And easy to operate.

4. Since there is a supporting layer 10 below the bioactive carbon filter layer 9, and the perforated air distribution pipe 13 is located in the supporting layer 10, the particles in the supporting layer 10 can divert and guide the airflow of the perforated air distribution pipe 13, without setting In the case of an aerator, it can satisfy the uniform distribution of air to the biological activated carbon filter layer 9, which simplifies the structure, and the supporting layer 10 has a certain filtering effect;

5. During the backwashing process, due to the air flow entered by the perforated air pipe 13, it can rise in the same direction as the backwashing water flow, and the combination of the airflow and the water flow can realize effective and efficient cleaning of the supporting layer 10 and the biological activated carbon filter layer 9. Fast backwashing can not only improve operation efficiency and save backwashing water consumption, but also reduce the amount of backwashing drainage.

Other characteristics and technical effects of the utility model will be further described in conjunction with specific implementation methods.

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

Description of drawings

Fig. 1 is a structural schematic diagram of the technical solution of the utility model, which is determined as an abstract accompanying drawing.

Detailed ways

See attached picture. The utility model comprises a shell 1 containing an inner cavity 1a, the shell 1 is cylindrical, and a water storage tank 2 is arranged above the inner cavity 1a of the shell. The upper part of the water tank has an outlet 3, and the lower part of the water storage tank has a water inlet 6;

The water outlet at the bottom of the housing 1 is connected to the water outlet pipe 4, and the water outlet pipe 4 communicates with the water inlet 6 at the bottom of the water storage tank 2 through the water pipe 5, and the water inlet 6 should be located at the bottom of the side wall of the water storage tank 2; The size of the volume of the water tank 2 should at least be able to meet the amount of water needed to complete one backwash;

The upper part of the inner chamber 1a of the housing is provided with a water distribution pipe 8 connected to the water inlet pipe 7, and a biological activated carbon filter layer 9, a supporting layer 10, and a secondary filter layer 11 are sequentially arranged below the water distribution pipe 8 from top to bottom;

The supporting layer 10 can use materials such as ceramsite or quartz sand; the secondary filter layer 11 is composed of several existing tubular ceramic sand filter tubes 11a, and the plurality of tubular ceramic sand filter tubes 11a pass through the connecting plate 11b is fixed, the connecting plate 11b is connected with the housing, the connecting plate 11b is also used to carry the supporting layer 10, and the secondary filter layer 11 can also be other filter material structures;

The supporting layer 10 is provided with a perforated air distribution pipe 13 connected to the air intake pipe 12, the perforated air distribution pipe 13 is preferably a lateral hole structure on both sides, and the upper part of the housing is provided with an air pipe communicating with the housing cavity 1a 14. The lower end of the air pipe 14 is connected to the partition 2a, and the air pipe is used for the discharge of the air flow in the inner cavity of the housing or the entry of external air during the operation process;

As shown in the figure, the backwash drain pipe 15 is connected on the water inlet pipe 7; an auxiliary air distribution pipe 16 connected to the air intake pipe 12 is provided below the secondary filter layer 11, and when backwashing is carried out, the auxiliary air distribution pipe 16 The air enters into the perforated air distribution pipe 13 at the same time, and the airflow of the auxiliary air distribution pipe 16 is combined with the backwashing water flow to realize sufficient and rapid flushing of the secondary filter layer 11 .

Various implementation structures described in the description of the utility model and any other modified structures to the technical solution of the utility model belong to the protection scope of the utility model.

Claims (4)

1. complex biological charcoal filter device is characterized in that: comprise the housing (1) that contains inner chamber (1a), housing inner chamber (1a) top is provided with water storage box (2), and outlet (3) is arranged at said water storage box top, and water-in (6) is arranged at the bottom;

The water outlet of said lower housing portion connects rising pipe (4), and rising pipe (4) is communicated with the water-in (6) of water storage box (2) bottom through water pipe (5);

Said housing inner chamber (1a) top is provided with the water distributor (8) that links to each other with water inlet pipe (7), and the below of water distributor (8) is provided with biological activated carbon filtering layer (9), supporting layer (10), secondary filtering layer (11) successively from top to bottom;

Be provided with the perforation gas distribution pipe (13) that links to each other with air intake duct (12) in the said supporting layer (10), said housing top is provided with the tracheae (14) that communicates with housing inner chamber (1a).

2. complex biological charcoal filter device according to claim 1 is characterized in that: water inlet pipe (7) is gone up and is connected back flushing water shoot (15).

3. complex biological charcoal filter device according to claim 2; It is characterized in that: secondary filtering layer (11) is made up of some tubular type pottery sand mold chimney filters (11a); Described some tubular type pottery sand mold chimney filters (11a) are fixing through web plate (11b), and web plate (11b) is connected with described housing.

4. complex biological charcoal filter device according to claim 3 is characterized in that: secondary filtering layer (11) below is provided with the auxiliary gas distribution pipe (16) that links to each other with air intake duct (12).