CN205759943U - A kind of novel active sand filter - Google Patents

Abstract

This utility model relates to a kind of novel active sand filter, it includes filter body, it is provided with stripping tube in the middle part of described filter body, it is provided with pipeline on tube wall bottom described stripping tube, it is connected with air switch board, it is provided with water-locator in described filter body, described water-locator is connected with water inlet pipe, it is provided with sand hopper below described water-locator, it is provided with washed-out sand room at described stripping tube top, ripple sand developing tube it is provided with bottom washed-out sand room, described washed-out sand room is connected with discharge pipeline, by described washed-out sand room, overflow groove is set, annular gas distribution pipe it is provided with between described water-locator and sand hopper, it is connected with air inlet pipe.This utility model structure arranges rationally, effectively removes NH₄‑N。

Description

A New Type of Active Sand Filter

technical field

The utility model relates to a filtering device, in particular to an active sand filtering device.

Background technique

The existing active sand filter mainly includes an air lift pump, a sand washer, a water distributor, a water collector, a sand bucket and a control system. Nowadays, water pollution is becoming more and more serious, and the discharge standards are getting higher and higher. Ordinary activated sand filters cannot meet the current sewage treatment requirements and cannot remove NH ₄ -N in water.

Contents of the invention

Purpose of the invention: The purpose of this utility model is to overcome the deficiencies in the prior art and provide a new type of active sand filter with reasonable structure and effective removal of NH ₄ -N.

Technical solution: In order to solve the above technical problems, a new type of activated sand filter described in the utility model includes a filter body, an air lift tube is arranged in the middle of the filter body, and a tube at the bottom of the air lift tube There is a pipeline on the wall, which is connected with the air control cabinet, and a water distributor is arranged in the filter body, and the water distributor is connected with the water inlet pipe, and a sand bucket is arranged under the water distributor, and the A sand washing chamber is provided on the top of the air lift pipe, and a corrugated sand washing pipe is provided at the bottom of the sand washing chamber. There is an annular air distribution pipe between the sand bucket and the sand bucket, which is connected with the air intake pipe.

The bottom of the filter body is conical.

At least two corrugated sand washing pipes are arranged at the bottom of the sand washing chamber.

The horizontal length of the annular air distribution pipe is the same as that of the water distributor port, accounting for 4/5-9/10 of the horizontal length of the filter body.

Beneficial effects: Compared with the prior art, the utility model has the remarkable advantages that the structure of the utility model is reasonable, and an annular gas distribution pipe is set between the water distributor and the sand bucket, forming a microbial film on the sea sand layer, and effectively removing sewage The NH ₄ -N in the filter can remove 75% of the ammonia nitrogen. It adopts the annular gas distribution pipe which accounts for 4/5-9/10 of the horizontal length of the filter body. The gas distribution efficiency is high, the use effect is good, and the microbial film can be formed quickly. The sand washing tube has good sand washing effect. The device runs smoothly and is reliable in use. It can work continuously for a long time and meets the actual use requirements.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

detailed description

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

As shown in Figure 1, a novel active sand filter described in the utility model includes a filter body 1, an air lift pipe 2 is arranged in the middle of the filter body 1, and a A pipe 3 is provided on the pipe wall, which is connected to the air control cabinet 4, and a water distributor 5 is provided in the filter body 1, and the water distributor 5 is connected to the water inlet pipe 6. In the water distributor 5 A sand bucket 7 is arranged below, a sand washing chamber 8 is arranged on the top of the airlift pipe 2, and a corrugated sand washing pipe 9 is arranged at the bottom of the sand washing chamber 8, and the sand washing chamber 8 is connected with the mud discharge pipe 10, and An overflow tank 11 is set beside the sand washing chamber 8, and an annular air distribution pipe 12 is arranged between the water distributor 5 and the sand bucket 7, which is connected with the air intake pipe 13; the bottom of the filter body 1 is conical At least two corrugated sand washing pipes 9 are provided at the bottom of the sand washing chamber 8; the horizontal length of the annular air distribution pipe 12 is the same as that of the water distributor 5 ports, accounting for 4/5 of the horizontal length of the filter body 1 -9/10. The structure of the utility model is reasonable, and an annular air distribution pipe is arranged between the water distributor and the sand bucket, forming a microbial film on the sea sand layer, effectively removing NH ₄ -N in the sewage, and the removal capacity of ammonia nitrogen reaches 75%. The annular air distribution pipe with a horizontal length of 4/5-9/10 has high air distribution efficiency, good use effect, and can quickly form microbial film. The corrugated sand washing pipe has good sand washing effect. The device runs smoothly and is reliable in use. Continuously work for a long time, in line with the actual use requirements.

The utility model provides a kind of train of thought and method, and there are many methods and approaches for realizing the technical solution. The above description is only a preferred embodiment of the utility model. Under the premise of not departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model, and each component that is not clear in the present embodiment can be improved by the prior art. accomplish.

Claims (4)

1. null1. a novel active sand filter，It is characterized in that: it includes filter body (1)，It is provided with stripping tube (2) at described filter body (1) middle part，Described stripping tube (2) bottom tube wall is provided with pipeline (3)，It is connected with air switch board (4)，Water-locator (5) it is provided with in described filter body (1)，Described water-locator (5) is connected with water inlet pipe (6)，It is provided with sand hopper (7) in described water-locator (5) lower section，It is provided with washed-out sand room (8) at described stripping tube (2) top，It is provided with ripple sand developing tube (9) in washed-out sand room (8) bottom，Described washed-out sand room (8) is connected with discharge pipeline (10)，On described washed-out sand room (8) side, overflow groove (11) is set，Annular gas distribution pipe (12) it is provided with between described water-locator (5) and sand hopper (7)，It is connected with air inlet pipe (13).
2. Novel active sand filter the most according to claim 1, it is characterised in that: the bottom of described filter body (1) is taper.
3. Novel active sand filter the most according to claim 1, it is characterised in that: in described washed-out sand room (8) bottom at least provided with two ripple sand developing tubes (9).
4. Novel active sand filter the most according to claim 1, it is characterised in that: the horizontal length of described annular gas distribution pipe (12) is identical with the horizontal length of water-locator (5) port, accounts for the 4/5-9/10 of filter body (1) horizontal length.