CN103058466A - Water treatment device in FBMBR (fluidized bed membrane bioreactor) - Google Patents

Abstract

The invention provides a water treatment device in an FBMBR, which comprises an anoxic tank, an FBMBR (fluidized bed membrane bioreactor) biochemical reaction tank and a clean water disinfection tank which are connected sequentially. The FBMBR biochemical reaction tank is connected with a sludge digestion tank. The water treatment device further comprises a suction pump. The treated sewage is sent to the biochemical reaction tank by the anoxic tank through automatic flow. The water treated by the biochemical reaction tank is pumped into the clean water disinfection tank for disinfection treatment by the suction pump through a membrane module. The water treatment device can be widely applied to the fields of reclaimed water treatment and recycled water treatment.

Description

A FBMBR reclaimed water treatment device

technical field

The invention relates to the technical field of reclaimed water treatment, and provides a FBMBR ((fluidized bed membrane bioreactor)) reclaimed water treatment device.

Background technique

Worldwide fresh water resources are finite and threatened by pollution. With the continuous growth of the world's population and the rapid development of industry and agriculture, water consumption and drainage are increasing year by year, while limited surface water and groundwater resources are constantly polluted, coupled with regional uneven distribution of water resources and periodic droughts , leading to the increasing shortage of fresh water resources, and the increasingly acute contradiction between supply and demand of water resources, which has become a factor affecting social stability and restricting economic development.

With the rapid development of my country's national economy and the continuous improvement of people's living standards, urban water demand is increasing day by day, and the water supply in most large and medium-sized cities in my country is seriously insufficient. The sewage is treated by specific equipment and reused as water resources.

Contents of the invention

The purpose of the present invention is to provide a FBMBR reclaimed water treatment device, which prolongs the service life of the membrane, reduces the operating cost, basically produces no sludge during the treatment process, and has no impact on the surrounding environment.

The technical scheme of the present invention is: a kind of FBMBR reclaimed water treatment device, it is characterized in that: comprise anoxic pond, FBMBR biochemical reaction pond, clean water disinfection pond connected in sequence, also include to anoxic pond and FBMBR biochemical reaction pond exposing The FBMBR biochemical reaction tank is connected to the sludge digestion tank, and a suction pump is installed between the FBMBR biochemical reaction tank and the clean water disinfection tank. The treated sewage in the reaction tank is sent to the clean water disinfection tank by suction pump.

In the above scheme, the biochemical reaction tank of the FBMBR is provided with a biological fluidization carrier. The biological fluidization carrier is composed of a mesh spherical shell and a built-in carrier. The shell is made of high molecular polymer injection molding, and the spherical surface is in the form of a grid Shaped openings, the built-in carrier is made of polyurethane through chemical modification.

In the above scheme, the aeration device includes a fan, and an aeration pipeline arranged at the bottom of the anoxic tank and the FBMBR biochemical reaction tank.

In the above solution, the FBMBR biochemical reaction tank is provided with a sludge lifting pump for lifting the sludge in the tank into the sludge digestion tank.

In the above scheme, the FBMBR biochemical reaction tank is provided with a FBMBR membrane assembly, and the FBMBR membrane assembly includes a flat membrane, a support, a sealing plate, and a suction water pipeline, and the flat membrane is fixed on the support through a diaphragm positioning hole plate, The sealing plate is arranged around the frame to form a closed filter chamber, and the suction water pipes are all arranged along the support, and the suction water pipes are connected with the suction pump.

In the above scheme, the aeration pipeline at the bottom of the FBMBR biochemical reaction tank includes a peripheral aeration pipeline arranged at the bottom of the pond and an aeration pipeline arranged below the FBMBR membrane module, and the peripheral aeration pipeline and the membrane aeration pipeline are connected with the Fan connection.

In the above scheme, a sludge collecting hopper is installed at the bottom of the sludge digester to facilitate sludge collection, a weir and water tank is installed at the upper part to facilitate the return of the supernatant to the FBMBR biochemical reaction tank, and a sludge discharge port is opened at the bottom.

In the above solution, the upper part of the clear water disinfection tank is provided with an overflow drain and an anti-mosquito ventilator.

In the above scheme, a water inlet is provided on one side of the anoxic pool, and a weir water tank and a water outlet are provided on the upper part of the other side.

In the above scheme, an overflow port is opened on the upper part of the FBMBR biochemical reaction tank, and an empty port is opened on one side of the lower part.

The present invention has the following beneficial effects:

1. The aeration pipeline of the FBMBR biochemical reaction tank of the present invention is divided into two paths, one path aerates the surrounding activated sludge, and the other path aerates the diaphragm of the membrane module. The scouring force generated by the aeration of the membrane of the FBMBR membrane module makes the membranes rub against each other, which can shake off the sludge attached to the surface of the membrane pores, greatly improve the membrane flux, prolong the service life of the membrane, and reduce the Operating costs.

2. The present invention integrates sewage treatment and water purification processes into the same device, which can be buried shallowly in the ground or placed on the surface; basically no sludge is generated during the treatment process, and it has no impact on the surrounding environment, with good operating effect and high reliability. The effluent water quality is stable and the operating cost is low.

Description of drawings

Fig. 1 is a system block diagram of the present invention.

Fig. 2 is a structural schematic diagram of the present invention.

Fig. 3 is an I-I sectional view of Fig. 2 .

Fig. 4 is a schematic structural view of the FBMBR membrane module.

Fig. 5 is a schematic diagram of the structure of the sludge digestion tank.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

Attachment No. Suction pump 1, aeration pipe 2, carrier 3, sludge lift pump 4, bracket 5, flat membrane 6, sealing plate 7, suction water pipe 8, peripheral aeration pipe 9, diaphragm aeration pipe 10. Sludge pipe 11, sludge tank weir tank 12, sludge outlet 13, mosquito and fly ventilator 14, overflow drain 15, water inlet 16, anoxic tank weir tank 17, water outlet 18, overflow port 19. Evacuation port 20

As shown in Fig. 1 and Fig. 2, a kind of FBMBR reclaimed water treatment device comprises the anoxic pond, FBMBR biochemical reaction pond, clear water disinfection pond connected in sequence, FBMBR biochemical reaction pond is connected with sludge digester, FBMBR biochemical reaction pond and A suction pump 1 is installed between the clean water disinfection tanks. The sewage treated in the anoxic tank flows into the FBMBR biochemical reaction tank by itself, and the sewage treated by the FBMBR biochemical reaction tank is sent to the clean water disinfection tank by suction pump.

As shown in Figure 3, one side of the anoxic pool is provided with a water inlet 16, and the upper part of the other side is provided with a weir water tank 17 and a water outlet 18, so that the sewage can flow stably and naturally into the FBMBR biochemical reaction pool, and the pool is filled with floating biological fluidization carriers 3. For anoxic sludge, the HRT (hydraulic retention time) of sewage in the anoxic tank is 3-8h, and oxygen is given intermittently to effectively carry out acidification, nitrification and denitrification.

As shown in Figure 4, the FBMBR biochemical reaction tank is provided with a submerged flat panel membrane module, which contains activated sludge. The membrane 6 is fixed on the bracket 5 through the membrane positioning orifice, the sealing plate 7 is arranged around the frame to form a closed filter cavity, and the suction water pipes 8 are all arranged along the bracket 5 .

The aeration pipeline 2 includes a peripheral aeration pipeline 9 and a membrane aeration pipeline 10, and the peripheral aeration pipeline 9 and the membrane aeration pipeline 10 are all connected with the fan. The aeration pipeline of the FBMBR biochemical reaction tank of the present invention is divided into two paths , one way aerates the surrounding activated sludge, and the other way aerates the diaphragm of the membrane module. The scouring force generated by the aeration of the membrane of the FBMBR membrane module makes the membranes rub against each other, which can shake off the sludge attached to the surface of the membrane pores, greatly improve the membrane flux, prolong the service life of the membrane, and reduce the Operating costs.

The supporting suction water pipe 8 on the membrane module is connected with the suction pump 1, and the sewage to be treated enters the FBMBR biochemical reaction tank through the outlet 18 of the anoxic tank, and the HRT of the sewage in the reaction tank is 5 hours. After the activated sludge in the FBMBR biochemical reaction tank is degraded, it passes through the flat membrane module, and then is pumped into the clean water disinfection tank by the suction pump 1. The FBMBR biochemical reaction tank is also equipped with a sludge lifting pump 4, which can lift excess sludge into the sludge digestion tank; the upper part of the FBMBR biochemical reaction tank has an overflow port 19, and the lower part has an empty port 20, which is convenient for structure maintenance in the tank , clean up.

As shown in Figure 5, the sludge enters the sludge digester through the upper sludge pipe 11, and a sludge collecting bucket is arranged at the bottom of the sludge digester to facilitate sludge collection, and a weir tank 12 is arranged at the upper part to facilitate the return of the supernatant to the FBMBR tank. The bottom has a mud discharge port 13, which relies on static pressure to automatically discharge mud.

The upper part of the clear water disinfection tank is provided with an anti-mosquito ventilator 14 and an overflow drain 15, and the disinfection measures of the disinfection tank adopt safe physical disinfection methods to further purify the water quality.

It should be noted that: the above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced.

Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. water treatment device among the FBMBR, it is characterized in that: comprise the anoxic pond, FBMBR biochemical reaction tank, the clear water sterilization pool that are linked in sequence, also comprise for the aerating apparatus to anoxic pond and FBMBR biochemical reaction tank aeration, described FBMBR biochemical reaction tank is connected with sludge digestion tank, be provided with suction pump (1) between FBMBR biochemical reaction tank and the clear water sterilization pool, sewage self-flowing after anoxic pond is processed enters the FBMBR biochemical reaction tank, and the sewage after the FBMBR biochemical reaction tank is processed is delivered to the clear water sterilization pool by suction pump.

2. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: described aerating apparatus comprises blower fan, and is arranged on the aerated conduit (2) at the bottom of anoxic pond and the FBMBR biochemical reaction tank pond.

3. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: be provided with organism fluidization carrier (3) in the described FBMBR biochemical reaction tank, this organism fluidization carrier is comprised of netted spherical shell and built-in carrier two portions, housing is that high molecular polymer is injection molded, sphere is latticed perforate, and built-in carrier is formed by chemical modification by urethane.

4. water treatment device among a kind of FBMBR according to claim 1 is characterized in that: be provided with in the described FBMBR biochemical reaction tank for the sludge lifting pump (4) of the sludge lifting in the pond in the sludge digestion tank.

5. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: be provided with the FBMBR membrane module in the described FBMBR biochemical reaction tank, described FBMBR membrane module comprises support (5), flat sheet membrane (6), shrouding (7), pump up water pipeline (8), described flat sheet membrane (6) is fixed on the support (5) by diaphragm location orifice plate, described shrouding (7) is arranged on framework all around to form the filtering chamber of a sealing, described pump up water pipeline (8) all arranges along support (5), and pump up water pipeline (8) is connected with suction pump (1).

6. water treatment device among a kind of FBMBR according to claim 5, it is characterized in that: the aerated conduit at the bottom of the described FBMBR biochemical reaction tank pond comprises the peripheral aerated conduit (9) that is arranged on the pond bottom perimeter and is arranged on the diaphragm aerated conduit (10) of FBMBR membrane module below, peripheral aerated conduit (9) and diaphragm aerated conduit (10) and equal blower fan UNICOM.

7. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: mud enters sludge digestion tank by sludge pipe (11), the sludge digestion tank bottom arranges sludge hopper, sludge digestion tank top is established sluice groove (12) and is beneficial to supernatant liquor and is back to the FBMBR biochemical reaction tank, and the bottom has mud discharging mouth (13).

8. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: described clear water sterilization pool top is provided with anti-mosquito ventilator (14) and Overflow drainage mouth (15).

9. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: anoxic pond one side is provided with water-in (16), and opposite side top is provided with sluice groove (17) and water outlet (18).

10. water treatment device among a kind of FBMBR according to claim 1, it is characterized in that: FBMBR biochemical reaction tank top has overflow port (19), bottom one side eat dishes without rice or wine (20) that begin to rehearse.

Images