CN201614321U - New pulse water distribution UASB water treatment device - Google Patents

Abstract

A novel pulse water distribution UASB water treatment method and device relates to a waste water treatment equipment technology. The utility model is an improved device proposed to solve the phenomenon of uneven water distribution, blockage and short flow that easily occur in the UASB reactor. The mud and water are mixed in the reactor; the new water distribution device includes a water distribution bracket and closely arranged water distribution plates, and the water flow enters the reactor through the gap between the water distribution plates; a backflow baffle is set in the air chamber of the three-phase separator , which is helpful for the backflow of the mixed liquid in the gas chamber, prevents clogging, and facilitates the release and collection of gas. The utility model has the advantages of less investment, high water treatment efficiency, effective recovery of biogas resources, stable operation, and convenient operation and management.

Description

New pulse water distribution UASB water treatment device

technical field

The utility model relates to a waste water treatment device, in particular to a water treatment method and device of a pulse water distribution UASB.

Background technique

Anaerobic biological treatment uses the metabolism of anaerobic microorganisms to use the reduced organic matter as a hydrogen acceptor without providing external energy, and at the same time produce methane gas with energy value. It is not only suitable for high-concentration organic wastewater, the highest concentration of BOD in the influent can reach tens of thousands of milliliters, but also suitable for low-concentration organic wastewater, such as urban sewage. Today, when the whole society advocates circular economy and pays attention to the recycling of industrial waste, anaerobic biological treatment is obviously the preferred process for recycling sewage. Upflow Anaerobic Sludge Blanket (UASB) process is a technology that can convert pollutants in sewage into renewable clean energy—biogas because of its dual characteristics of anaerobic filtration and anaerobic activated sludge process. It also has strong adaptability to sewage with different solid content, and its structure, operation, operation, maintenance and management are relatively simple, and its cost is relatively low. It is increasingly valued by the sewage treatment industry and widely welcomed and applied.

However, there are still some problems in the actual operation of UASB. The water flow in UASB is relatively complicated. As a result of gas production, a rising air flow is formed in the reactor, which drives part of the mud-water mixture to move upward. At the same time, the medium around the gas and water flow moves downward. , resulting in reverse mixing, this flow state has caused a short flow of water, and it is easy to form a dead angle in a place far away from this rising air and water flow. Therefore, the stable operation of the UASB system requires reasonable water intake and water distribution methods. In actual projects, UASB is prone to problems such as uneven water distribution and blockage.

Utility model content

The purpose of this utility model is to propose a new pulse water distribution UASB water treatment method and device for the defects of traditional UASB reactors. The utility model uses a pulse water distributor to provide pulse water intake, and a new water distribution device to cooperate with it , On the one hand, it provides uniform pulsed water flow for the reactor, intermittently provides rising water flow and sludge sinking time, promotes mud-water mixing, and on the other hand solves the problem of water blockage; and the air chamber of the three-phase separator is set The backflow baffle promotes the backflow of the mixed liquid in the gas chamber, prevents clogging, and facilitates the release and collection of gas.

The utility model is realized through the following scheme: the device includes a pulse water distributor 1, a new water distribution device 2, a UASB reactor 3 and a three-phase separator 4; it is characterized in that the three-phase separator 4 is provided with an air chamber backflow baffle , the new water distribution device 2 is composed of a water distribution bracket 9 and closely arranged water distribution boards 10, the water distribution board 10 is placed obliquely on the water distribution bracket 9, and forms a water distribution chamber with the water distribution bracket 9; the water flow Flow into the reactor through the gap between the water distribution plates 10; the new water distribution device 2 is circular, square or rectangular, including two or more sets of water distribution plates, and the water distribution plates are in the form of rings, loops or straight lines type arrangement.

A new pulse water distribution UASB water treatment method using the above-mentioned device, characterized in that the incoming water is provided with pulse water flow by the pulse water distributor 1, and enters the reactor through the new water distribution device 2; the special design of the new water distribution device 2 Make the water flow and the sludge layer 5 in the reactor fully contact and react and effectively prevent clogging; the air bubbles generated after the muddy water reaction carry the sewage mixture through the suspension layer 6 into the three-phase separator, and the air bubbles disperse when they hit the backflow baffle, Enter the air chamber 7 and lead out through the conduit at the top of the air chamber 7; the sewage mixture in the air chamber 7 flows back to the suspension layer 6 through the return baffle of the three-phase separator 4; the sludge in the sewage flocculates and accumulates under the action of gravity Sinking; the sewage mixed solution enters the sedimentation zone 8 to settle out of the water; this method provides the pulse water inlet mode by the pulse water distributor, which provides intermittent rising water flow and sludge sinking time for the reactor, and promotes the mixing of mud and water; new water distribution device While providing uniform water inflow, it can effectively prevent clogging; the water distribution chamber provides conditions for the uniform distribution of inflow water; the three-phase separator is equipped with an air chamber return baffle, which can return the sludge accumulated in the air chamber to the suspension layer, prevent the clogging of the air chamber, and facilitate the release and collection of gas.

The utility model overcomes the short flow and dead angle phenomenon in the traditional UASB reactor, adopts the method of combining the pulse water inlet mode and the new water distribution device to provide uniform water distribution, promote the mixing of mud and water in the reactor, and the backflow block of the three-phase separator The plate helps the gas chamber mixture to flow back, prevents clogging, and facilitates gas release and collection. The utility model has the advantages of less investment, high water treatment efficiency, effective recovery of biogas resources, stable operation, and convenient operation and management.

Description of drawings

Fig. 1 is the schematic diagram of the utility model device.

In the figure: 1-pulse water distributor, 2-new water distribution device, 3-UASB reactor, 4-three-phase separator, 5-sludge layer, 6-suspension layer, 7-air chamber, 8-sedimentation area .

Fig. 2 is a sectional view and a plan view of the new water distribution device provided by the utility model.

Among the figure, 9-water distribution bracket, 10-water distribution plate.

Fig. 3 is a top view of the new water distribution device provided by the utility model.

Among the figure, 10-water distribution board.

Detailed ways

Below in conjunction with accompanying drawing, the principle of the utility model and working process are further described.

As shown in Figure 1, the water inflow is provided by the pulse water distributor 1 and enters the reactor through the new water distribution device 2; the pulse water inflow mode can provide the reactor with intermittent rising water flow and sludge sinking time, Promote the mixing of mud and water; the inclined setting of the water distribution plate 10 in the new water distribution device 2 can effectively prevent the clogging problem, so that the incoming water enters the reactor through the deflection of the water distribution plate, resulting in an oblique water flow, causing the sludge layer in the reactor 5 Disturbance and mixing, and fully contact and react with the incoming water; the water distribution chamber composed of the water distribution bracket 9 and the water distribution plate 10 can relieve the impact of single-point water entry and provide conditions for the uniform distribution of the incoming water; the pulse water entry method and the new The combination of the water distribution device 2 makes the influent water flow evenly distributed, avoiding short flow and dead angle; the air bubbles generated after the muddy water reaction carry the sewage mixture through the suspension layer 6 and enter the three-phase separator 4, and the air bubbles disperse when they hit the return baffle, Enter the air chamber 7 and lead out through the conduit at the top of the air chamber 7; the sewage mixture in the air chamber 7 flows back to the suspension layer 6 through the backflow baffle of the three-phase separator 4, which can prevent the air chamber from being blocked and facilitate gas release and collection; The sludge in the sewage flocculates and accumulates and sinks under the action of gravity; the sewage mixed solution enters the sedimentation zone 8 to settle out of water.

Claims (2)

1. A novel pulse water distribution UASB water treatment device, the device comprises a pulse water distributor (1), a novel water distribution device (2), a UASB reactor (3) and a three-phase separator (4); it is characterized in that , the three-phase separator (4) is provided with an air chamber return baffle (11), and the new water distribution device (2) is composed of a water distribution bracket (9) and closely arranged water distribution plates (10), the water distribution plate (10) Place it obliquely on the water distribution bracket (9), and form a water distribution chamber with the water distribution bracket (9); the water flows into the reactor through the gap between the water distribution plates (10). 2. A new type of pulse water distribution UASB water treatment device as claimed in claim 1, characterized in that, the new type of water distribution device (2) is circular, square or rectangular, containing two or more groups of cloth The water board and the water distribution board are arranged in a ring, a circle or a straight line.

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