CN203922839U - A kind of Novel small-sized sewage treatment unit - Google Patents

Abstract

The utility model provides a kind of Novel small-sized sewage treatment unit, it includes sewage water inlet pipe, back flushing effluent collection overflow weir, wherein, sewage water inlet pipe one end is connected with outer water tube, the other end is connected with Ni Keni pump, and sewage water inlet pipe is provided with water intaking valve, and the water inlet pipe between water intaking valve and Ni Keni pump is provided with vacuum meter, Ni Keni pump top is provided with suction line upwards, and Ni Keni pump discharge end is connected with air water separator; Air water separator top is provided with vent valve, and air water separator one side is connected with main reaction device bottom, biological filter by distribute water and air pipe, and distribute water and air pipe is provided with tensimeter and pressure valve; Biological filter main reaction device inner chamber bottom is provided with bed course, bed course top is provided with gac filtering layer, the biological filter main reaction device inner side-wall of gac filtering layer top is provided with water outlet and receives water overflow weir, and water outlet is received water overflow weir and is connected with outside Water collection unit by rising pipe; Main reaction device top, biological filter is provided with back flushing effluent collection overflow weir.This programme has been simplified equipment structure, and has eliminated blower fan or the sound pollution of jet aerator to environment.

Description

A new type of small domestic sewage treatment device

technical field

The utility model relates to the field of sewage treatment equipment, in particular to a novel small domestic sewage treatment device.

Background technique

At present, the microbial carriers mainly used in the biological aerated filter mainly include: spherical ceramsite, expanded slate, etc., and a few use ordinary activated carbon biological filters. The oxygen supply methods used are mainly bottom blast aeration and jet aeration. For the treatment of high-concentration domestic sewage, there are problems such as small specific surface area of filter material and insufficient oxygen supply for microorganisms, which affect the biochemical reaction efficiency of the filter.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a new type of small domestic sewage treatment device with simple structure and good treatment effect.

In order to achieve the above purpose, the technical solution provided by the utility model is: a new type of small-scale domestic sewage treatment device, which includes a sewage inlet pipe, a water inlet valve, a vacuum gauge, a suction pipeline, a Niconi pump, an air-water Separator, exhaust valve, pressure gauge, pressure valve, water distribution pipe, biofilter main reaction device, cushion layer, activated carbon filter layer, effluent water collection overflow weir, outlet pipe, backwash effluent collection overflow weir, Among them, one end of the sewage inlet pipe is connected to the external water pipe, and the other end is connected to the Niconi pump. The sewage inlet pipe is provided with a water inlet valve, and the inlet pipe between the water inlet valve and the Niconi pump is provided with a vacuum gauge. There is an upward suction pipeline on the top of the Niconi pump, and the outlet end of the Niconi pump is connected to the gas-water separator; there is an exhaust valve on the top of the gas-water separator, and one side of the gas-water separator is connected to the The lower part of the main reaction device of the biological filter is connected, and a pressure gauge and a pressure valve are installed on the air pipe of the water distribution device; The inner wall of the main reaction device of the biofilter is provided with an outlet water collection overflow weir, and the outlet water collection overflow weir is connected to the external water collection part through the outlet pipe; the top of the main reaction device of the biofilter is provided with a backwash outlet water collection overflow weir .

The water distribution air pipe extends through the shell of the main reaction device of the biological filter into the cushion layer.

This scheme mainly uses the Niconi pump as the dissolved air system to provide biological oxygen supply to the activated carbon aerated biological filter for treatment, which solves the problems of small specific surface area of the filter material of the aerated biological filter and insufficient microbial oxygen supply, and improves aeration The volume utilization rate of the biological filter in the filter material makes the equipment miniaturized. The aerated biological filter involved in the utility model has tolerance to higher BOD load (the operating BOD load can reach more than 10kg/(m ³ filter material/d)), can directly treat the domestic sewage in the community, and pass through the microbial The quality of the treated effluent can stably meet the discharge standard. There is no need to repeatedly design the blower aeration system and jet aeration system, which simplifies the equipment structure and eliminates the noise pollution of the fan or jet aerator to the environment.

Description of drawings

Fig. 1 is the pipeline schematic diagram of the present utility model.

Fig. 2 is a schematic diagram of the main reaction device of the biological filter of the present invention.

Detailed ways

Below in conjunction with all accompanying drawings the utility model is further described, the preferred embodiment of the utility model is: referring to accompanying drawing 1 and accompanying drawing 2, the small domestic sewage treatment device described in the present embodiment comprises sewage inlet pipe 1, inlet Water valve 2, vacuum gauge 3, suction pipeline 4, Niconi pump 5, gas-water separator 6, exhaust valve 7, pressure gauge 8, pressure valve 9, water distribution air pipe 10, main reaction of biological filter Device 11, cushion layer 12, activated carbon filter layer 13, outlet water collection overflow weir 14, outlet pipe 15, backwash outlet water collection overflow weir 16, wherein one end of the sewage inlet pipe 1 is connected to an external water pipe, and the other end is connected to a Nico The Niconi pump 5 is connected, and the Niconi pump is a small-flow high-lift vortex pump (gas-liquid mixing pump); the sewage inlet pipe 1 is provided with a water inlet valve 2, and the water inlet valve 2 and the Niconi pump 5 A vacuum gauge 3 is provided on the water inlet pipe between them, an upward suction pipeline 4 is provided on the top of the Niconi pump 5, and the outlet end of the Niconi pump 5 is connected with the gas-water separator 6; the top of the gas-water separator 6 An exhaust valve 7 is provided, and one side of the gas-water separator 6 is connected to the lower part of the main reaction device 11 of the biological filter through the water distribution air pipe 10, and the water distribution air pipe 10 is provided with a pressure gauge 8 and a pressure valve 9; The lower part of the inner cavity of the main reaction device 11 is provided with a cushion layer 12, and the water distribution air pipe 10 extends through the shell of the main reaction device 11 of the biofilter into the cushion layer 12; an activated carbon filter layer 13 is arranged above the cushion layer 12, and the activated carbon It is a new type of activated carbon filter material, which is a modified activated carbon filter material produced from lignite. The filter material of the utility model adopts improved coal-based activated carbon, which not only has the high mechanical strength and physical and chemical stability of ordinary biological filter materials, but also has a larger specific surface area and porosity than ordinary biological filter materials, and has certain surface electrical properties. And high hydrophilicity, with a relatively moderate wet density, providing greater and more convenient conditions for the attachment of microorganisms. The water inlet pump used is a Niconi pump, which inhales air at the same time as water inflow, and mixes the air into small bubbles into the water to increase the aeration efficiency, increase the contact ratio between microorganisms and air, and the gas-liquid mixing noise is small. The inner wall of the biofilter main reaction device 11 above the activated carbon filter layer 13 is provided with an outlet water collection overflow weir 14, and the outlet water collection overflow weir 14 is connected with an external water collection part through an outlet pipe 15; the biofilter main reaction device The top of 11 is provided with backwash effluent collecting overflow weir 16.

The domestic sewage enters the gas-liquid mixing system from the sewage inlet pipe 1, adjusts the inlet water flow through the water inlet valve 2, observes the negative pressure reading of the dissolved air pump through the vacuum gauge 3, and then opens the suction valve according to the reading, and the air flows from the suction pipeline 4 enters the Niconi pump 5 to fully mix with the sewage, and then the gas-water mixture enters the gas-water separator 6, and in the gas-water separator, the air release volume is adjusted through the exhaust valve 7 to separate excess gas and control the dissolved pressure. Forms very small uniform bubbles in water. The pressure of the air-water mixture entering the main body of the biofilter is controlled by a pressure gauge 8 and a pressure regulating valve 9 . The gas-water mixture enters the main reaction device 11 of the biofilter through the perforated water distribution pipe 10, passes through the cushion layer 12 with a large gap at the bottom of the main reaction device, and then enters the improved coal-based activated carbon filter layer 13. There are a large number of sewage treatment microorganisms attached to the layer. Since the influent water contains a large number of air bubbles, the oxygen in the bubbles provides sufficient oxygen for the biochemical reaction, so that the biochemical reaction can be fully carried out, and the COD in the sewage is fully obtained here. The removal of SS is also intercepted and adsorbed in the process of passing through the filter layer. The purified sewage is collected at the outlet water collection overflow weir 14 on the upper part of the main reaction device, and then discharged out of the device through the outlet pipe 15 . For backwashing, water is drawn in from the discharge pool or clear water pool through another pipe, and enters from the sewage inlet pipe 1. It flows through the same gas-water mixing process as domestic sewage treatment, and controls a certain gas-water ratio and pressure to enter the main reaction of the biofilter. The device 11 washes away the intercepted substances in the improved coal-based activated carbon filter layer 13, reduces the resistance of the filter layer, and finally collects the backwash water from the overflow weir 16 and returns it to the regulating tank or the upper-level processing unit through the pipeline.

The above-described embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of implementation of the present utility model, so all changes made according to the shape and principle of the present utility model should be covered by the scope of the present utility model. within the scope of protection.

Claims (2)

1. A new type of small domestic sewage treatment device, characterized in that it includes a sewage inlet pipe (1), water inlet valve (2), vacuum gauge (3), suction pipeline (4), Niconi pump (5), gas-water separator (6), exhaust valve (7), pressure gauge (8), pressure valve (9), water distribution pipe (10), main reaction device of biological filter (11), pad Layer (12), activated carbon filter layer (13), outlet water collection overflow weir (14), outlet pipe (15), backwash outlet water collection overflow weir (16), wherein, one end of the sewage inlet pipe (1) is connected to the outside The other end is connected to the water pipe, and the other end is connected to the Niconi pump (5). The sewage inlet pipe (1) is provided with a water inlet valve (2), and the water inlet pipe between the water inlet valve (2) and the Niconi pump (5) There is a vacuum gauge (3) on the top, an upward suction pipeline (4) is provided on the top of the Niconi pump (5), and the outlet end of the Niconi pump (5) is connected to the gas-water separator (6); The top of the water separator (6) is provided with an exhaust valve (7), and one side of the gas-water separator (6) is connected to the lower part of the main reaction device (11) of the biological filter through the water distribution pipe (10). (10) is provided with a pressure gauge (8) and a pressure valve (9); a cushion (12) is provided at the lower part of the inner cavity of the main reaction device (11) of the biological filter, and an activated carbon filter layer (12) is provided above the cushion (12) 13), the inner wall of the biofilter main reaction device (11) above the activated carbon filter layer (13) is provided with an outlet water collection overflow weir (14), and the outlet water collection overflow weir (14) passes through the outlet pipe (15) It is connected with external water collecting parts; the top of the main reaction device (11) of the biofilter is provided with an overflow weir (16) for backwashing effluent collection. 2. A new type of small-scale domestic sewage treatment device according to claim 1, characterized in that: the water distribution air pipe (10) passes through the shell of the main reaction device (11) of the biological filter and extends into the cushion (12).