CN214829716U

CN214829716U - Wastewater treatment equipment

Info

Publication number: CN214829716U
Application number: CN202022282117.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenyang Geerun Technology Co ltd
Current assignee: Shenyang Geerun Technology Co ltd
Priority date: 2020-10-14
Filing date: 2020-10-14
Publication date: 2021-11-23
Anticipated expiration: 2030-10-14

Abstract

The utility model discloses a wastewater treatment equipment, include: a water inlet pipeline, a water inlet baffle, a pretreatment chamber, an outlet, an aeration chamber, a biomembrane supporting medium, an aerator tip aeration part, a baffle box, a first supporting wall, a second supporting wall, an aeration/sedimentation chamber wall, a corner part, a sedimentation chamber, a baffle and a waste water pipe. The utility model provides a mixed liquid mixes, and circulation and waste water collection have created suitable water conservancy condition for handle waste water, make the mud in the treatment tank pile up the minimum simultaneously. The utility model is not limited by sewage amount, flexible and small in occupied area.

Description

Wastewater treatment equipment

Technical Field

The utility model relates to a water treatment field. More specifically, the utility model relates to a waste water treatment equipment.

Background

Since the 70's of the 20 th century, various types of water tanks have been developed for wastewater treatment. In these tanks, aeration of the wastewater is a critical step in the treatment, with part of the treated wastewater being circulated along with untreated wastewater. Blowers, air compressors, floor aerators are used in different wastewater treatment systems, all of which interact with the tank in which they are located. Part of the function of these aerators is to create a circulation flow in the treatment tank to allow the organic waste digestion process to proceed efficiently.

The aeration step of wastewater treatment requires a chamber in which aerobic digestion of organic solids can be carried out. Typically, driving a sludge process or biofilm process occurs in the presence of such aeration. Most aeration chambers are cubic in shape. In these chambers there are "dead spots" where low flow rates can lead to the accumulation of organic solids and the efficiency of the process is affected by these "dead spots" where the organic solids are not efficiently digested. This, in turn, results in the accumulation of sludge at the bottom of the tank, which must then be removed.

Therefore, the utility model provides a wastewater treatment device which can circulate the fluid in an aeration chamber to eliminate dead angles, thereby digesting organic solids to the maximum extent; enhancing the settling action in the settling chamber, thereby increasing digestion of the organic matter; providing support for a biofilm immersed in the wastewater being treated in the aeration chamber.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at overcoming the defects existing in the prior art and providing a wastewater treatment device. In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

an apparatus for treating wastewater, comprising: the device comprises a water inlet pipeline, a water inlet baffle, a pretreatment chamber, an outlet, an aeration chamber, a biomembrane supporting medium, an aeration device tip aeration part, a baffle box, a first supporting wall, a second supporting wall, an aeration/sedimentation chamber wall, a corner part, a sedimentation chamber, a baffle and a waste water pipe; wherein the pretreatment chamber and the aeration chamber share a first support wall that separates the pretreatment chamber from the aeration chamber, and the aeration chamber and the settling chamber share a second support wall that separates the aeration chamber from the settling chamber; the outlet is used for guiding the wastewater from the settling chamber to the outside of the wastewater treatment equipment; the aeration part at the tip end of the aerator is positioned in the aeration chamber and is used for aerating the wastewater in the aeration chamber.

Preferably, the first support wall comprises first passage means for conducting wastewater from the pretreatment chamber to the aeration chamber.

Preferably, said second support wall comprises second passage means for conducting wastewater from the aeration chamber to the settling chamber, the second passage means being the only means for conducting a flow of wastewater between the aeration chamber and the settling chamber.

Preferably, the aeration chamber comprises a first support wall that is straight at the bottom and a second support wall that is straight, the first support wall and the second support wall being attached to the aeration chamber and oriented substantially perpendicular to the total wastewater flow direction.

The equipment design of the utility model comprises three chambers (a pretreatment chamber, an aeration chamber and a settling chamber). The pretreatment chamber has an inlet and an outlet to allow wastewater to flow from the pretreatment chamber to the aeration chamber. In the aeration chamber, the wastewater is aerated and flows from the bottom of the aeration chamber to the settling chamber. The settling chamber has an outlet through which the treated wastewater flows for discharge or further treatment. The common wall separates the pretreatment chamber from the aeration chamber and separates the aeration chamber from the settling chamber. Both the pretreatment chamber and the settling chamber provide static settling conditions to allow any suspended solids to settle out of solution. Wastewater recirculation is generated in the aeration chamber to allow aerobic digestion of organic solids as part of the wastewater treatment process.

The circulating flow in the aeration chamber of the utility model is generated by the rotary immersion aerator and two supporting walls. Any suspended solids in the aeration chamber are mixed with the wastewater in the pretreatment chamber. One embodiment of the present invention includes an immersed biofilm process wherein the biofilm carrier is supported by a support wall.

The "biofilm process" is a wastewater treatment process in which a support medium made of plastic, metal, ceramic or other suitable material is immersed in the wastewater to be treated, and bacteria that digest the organic solids grow on the support medium to form a layer of bacteria or "biofilm". The biofilm then digests other organic material in contact therewith, thereby eliminating organic suspended solids in solution. However, in order for the biofilm process to digest suspended solids, these suspended solids must circulate through the biofilm and cannot fall to the bottom of the aeration tank and accumulate in the form of sludge.

To eliminate the effects of treatment tanks with little or no recirculation and to prevent or minimize sludge accumulation, new shapes for aeration chambers of wastewater treatment plants have been developed. The bottom of the aeration/settling chamber wall is modified to be inclined or curved with the slope at an angle of between 10 ° and 60 ° to the apex. The effect of the slope is to create fluid forces to make the settling in the settling chamber more efficient and to draw the settled organic solids back into the aeration chamber for subsequent digestion. The sloped portion also creates a fluid force at the bottom of the plenum.

Drawings

Fig. 1 is a side view of the present invention.

Reference numerals: a water inlet pipeline 1, a water inlet baffle 2, a pretreatment chamber 3, an outlet 4, an aeration chamber 5, a biofilm support medium 6, an aerator tip aeration part 7, a baffle box 8, a first support wall 9, a second support wall 10, an aeration/settling chamber wall 11, an angle part 12, a settling chamber 13, a baffle 14 and a waste water pipe 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

FIG. 1 is a side view of a wastewater treatment facility of the present invention. The inlet water enters the pretreatment chamber 3 through the inlet water pipeline 1 and the inlet water baffle 2. Influent water may come from a variety of sources, such as sewage from a house or community dwelling. The large amount of organic and inorganic solids settled out of the water inlet remain at the bottom of the primary pretreatment chamber 3 and are removed and disposed of by conventional means. The settled liquid then flows from the pretreatment chamber to the aeration chamber 5 through baffle box 8 and outlet 4.

In aeration chamber 5, a submerged rotary aerator injects air into the wastewater to digest the suspended organic solids, a process known as "activated sludge". In this way, untreated wastewater is mixed with treated wastewater and then the digestion of organic particles is continued.

When the biofilm process is used, the aeration chamber 5 further comprises a plastic biofilm support medium 6 coated with biofilm and two support walls. The liquid in the pre-treatment chamber 3 is immediately mixed with a mixed liquor (i.e. a mixture of treated and untreated wastewater) which may have been treated in the treatment chamber, by means of the biofilm support medium 6, the first support wall 9 and the second support wall 10. In an embodiment of the invention, the first support wall 9 and the second support wall 10 are used to support the biofilm support medium 6 and to guide a part of the circulating flow. Thus, solid particles from the influent water or dislodged from the biofilm support media 6 circulate within the chamber and pass through the aerator tip aeration section 7 and are surface treated by the biofilm on the biofilm support media 6.

The current passing through the channel between the second support wall 10 and the aeration/settling chamber wall 11 flows down to the bottom of the biofilm aeration chamber 5. The angular portion 12 of the bottom of the aeration/settling chamber wall 11 forces the current to flow at an angle. The underflow is generated by this current. The settled solids in the settling chamber 13 are returned to the aeration chamber 5 by the force of the fluid drawn from the settling chamber to the aeration chamber. The corner portion 12 prevents turbulence at the bottom of the settling chamber by creating laminar flow while improving the efficiency of solids removal in the settling chamber. The supernatant in the settling chamber 13 is collected and flows out through a waste water collection assembly in the form of a baffle 14 and a waste water pipe 15. The supernatant was collected at a depth from the water surface. The baffle box or baffle 14 prevents floating solids from being flushed out.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. An apparatus for treating wastewater, comprising: the device comprises a water inlet pipeline (1), a water inlet baffle (2), a pretreatment chamber (3), an outlet (4), an aeration chamber (5), a biofilm supporting medium (6), an aerator tip aeration part (7), a baffle box (8), a first supporting wall (9), a second supporting wall (10), an aeration/settling chamber wall (11), an angle part (12), a settling chamber (13), a baffle (14) and a wastewater pipe (15); wherein a first supporting wall (9) common to said pre-treatment chamber (3) and said aeration chamber (5) separates said pre-treatment chamber (3) from said aeration chamber (5), and a second supporting wall (10) common to said aeration chamber (5) and said settling chamber (13) separates said aeration chamber (5) from said settling chamber (13); the outlet (4) is used for guiding the wastewater from the settling chamber to the outside of the wastewater treatment equipment; the aerator tip aeration part (7) is positioned in the aeration chamber (5) and is used for aerating the wastewater in the aeration chamber (5).

2. A waste water treatment plant according to claim 1, characterized in that said first support wall (9) comprises first passage means for leading waste water from the pretreatment chamber (3) to the aeration chamber (5).

3. A wastewater treatment plant according to claim 1, characterized in that said second support wall (10) comprises second passage means for conducting wastewater from the aeration chamber (5) to the settling chamber (13), the second passage means being the only means for conducting the flow of wastewater between the aeration chamber (5) and the settling chamber (13).

4. A wastewater treatment plant according to claim 1, characterized in that the aeration chamber (5) comprises a first support wall (9) which is straight at the bottom and a second support wall (10) which is straight, the first support wall (9) and the second support wall (10) being attached to the aeration chamber (5) and being oriented substantially perpendicular to the total wastewater flow direction.