CN201406344Y

CN201406344Y - Biologic fixed bed reactor

Info

Publication number: CN201406344Y
Application number: CN2009200256949U
Authority: CN
Inventors: 于桂英; 张喜玲; 孙海丽; 梅媛
Original assignee: Shandong H-Shine Tezone Environmental Engineering Co Ltd
Current assignee: Shandong H-Shine Tezone Environmental Engineering Co Ltd
Priority date: 2009-05-19
Filing date: 2009-05-19
Publication date: 2010-02-17
Anticipated expiration: 2019-05-19

Abstract

The utility model relates to a biologic fixed bed reactor. A water distributing channel is arranged on the bottom of a reactor body, and is communicated with a water inlet pipe. The utility model is characterized in that a filter material layer is arranged in the reactor body, and is formed by arranging and overlapping a plurality of spherical filter materials with the specific gravity smaller than 1, and microbial films are attached to the surfaces of the spherical filter materials; a filter plate which prevents filter materials from being lost is covered above the filter material layer, anda plurality of water outlet filter heads are arranged on the filter plate; a water outlet is formed on the reactor body wall above the filter plate; and an aerated pipe is arranged under the filter material layer in the reactor body. The utility model has the advantages of small ground occupation, no odious smell pollution and stable sewage treatment performance, can be used for secondary sewage treatment, can also be used for deep sewage treatment with other requirements such as treated water reuse and the like, and can reach high discharge water quality standard.

Description

A kind of biological fixation bed bioreactor

Technical field

The utility model relates to a kind of waste disposal plant, specifically is a kind of biological fixation bed bioreactor, and pollutents such as COD and N are used for disposing of sewage.

Background technology

At present, at sewage treatment area, activated sludge process is undoubtedly a kind of dirty water living creature processing technique that is widely used and good result is arranged.But along with city size constantly enlarges, taking up an area of continuous expansion of huge population makes the city become crowded, many urban lands are rare, and the sewage work that builds activated sludge process needs to take up an area of several hectares easily, even tens hectares, the too big and urban development formation contradiction of floor space, thus its development restricted.

In addition, environment is abominable, the sewage treatment structure big area of bulky is exposed in the air, very easily produces odor pollution, and surrounding resident can't be stood.Therefore increasing resident's refusal is adjacent with sewage work.

Also have, active sludge treatment sewage unstable properties, because active sludge is a kind of microorganism micelle of suspended state, its concentration is usually below 6000 mg/litre, external environment (as temperature, Pollutant levels etc.) very easily exerts an influence to treatment effect, even cause sludge bulking, water quality treatment is worsened.

The utility model content

In order to overcome the shortcoming that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of biological fixation bed bioreactor, and its floor space is little, can not produce stink and pollute the stable performance of disposing of sewage.

The technical solution of the utility model is: this biological fixation bed bioreactor, and the reactor body bottom is provided with distributing flue, is communicated with water inlet pipe; Be provided with filter material layer in the reactor body, filter material layer is had a microbial film by several surface attachment proportion is arranged to be stacked less than 1 spherical filtrate and is formed; The top of filter material layer is coated with the filter plate that prevents that filtrate runs off, and filter plate is provided with several filters that is used for water outlet; On the reactor body wall above the filter plate, be provided with water outlet; The inherent filter material layer of reactor body below is provided with aeration tube.

As further technical scheme of the present utility model:

In this biological fixation bed bioreactor, described filter material layer thickness is 3～3.5m.

In this biological fixation bed bioreactor, described reactor body bottom also is connected with the recoil inlet pipe, and the recoil inlet pipe is positioned at the below of aeration tube.

The beneficial effects of the utility model are:

1, because filter tank and biochemical reactor are combined, therefore no longer needs settling tank;

2, floor space is little, is 1/4～1/5 of common process, saves a large amount of expropriations of land and ground processing costs;

3, Chi Rongxiao, civilwork engineering quantity lacks 20%～40% than other technology;

4, whole modular constructions, reorganization and expansion is easy, and the duration is short;

5, the top water outlet is a clear water, and filter is difficult for stopping up, and maintenance and replacing are easily.Need not filtrate in the emptying filter tank;

6, can carry out totally-enclosedly to plant area, no stink pollutes, and vision and landscape effect are good;

3, do not need independent recoil Xian Shui and backwash pump, reduced facility investment and working cost;

7, perforated pipe aerating regulation is saved facility investment and maintenance cost, the efficient height.And the membrane type aeration head begins to lose its efficient in operation after 2 years usually;

9, level of automation height, operator are few; Cold operation is stable, and temperature influence is very little;

10, because it has successive physical filtering ability, in case biological respinse generation problem, the suspended substance of the overwhelming majority still can be removed in the filter tank; And only needed several days can recover the biological treatment ability, and activated sludge process needs could recover in several weeks;

11, technological operation is flexible, can finish nitrated denitrifying function simultaneously in the same filter tank.

It both can be used for the second-stage treatment of sewage, also can be used for the advanced treatment of wastewater that treat effluent needs other requirements such as reuse, and can reach very high discharging water quality standard.

Description of drawings

Below in conjunction with drawings and Examples the utility model is described further:

Fig. 1 is a structural representation of the present utility model,

Among the figure: 1 filter material layer, 2 aeration tubes, 3 reactor bodies, 4 filter plates, 41 filters, 5 distributing flues, 6 recoil inlet pipe, 7 water outlets.

Embodiment

As shown in Figure 1, this biological fixation bed bioreactor, same as the prior art is that these reactor body 3 bottoms also are provided with distributing flue 5, is used for being communicated with water inlet pipe.Difference is, is provided with filter material layer 1 in this reactor body 3, and filter material layer thickness is 3～3.5m.Filter material layer 1 is had a microbial film by several surface attachment proportion is arranged to be stacked less than 1 spherical filtrate and is formed.This filtrate has very big specific surface area, has higher detergent power, and it is high to handle load; And mechanical property and physical and chemical performance are good, not easy to wear.The filtrate loss is minimum, hardly with changing.The starting material of filtrate come from domestic industrial raw material, but produce in situ processing is with low cost.

The top of filter material layer 1 is coated with the filter plate 4 that prevents that filtrate runs off, and filter plate 4 is provided with several filters that is used for water outlet 41.Because these filters only with the water contact after handling, have therefore been avoided obstruction; Simultaneously, because these do not have filtrate above filter, so be easy to safeguard.

Be provided with water outlet 7 on the reactor body wall above the filter plate 4, the water outlet after being used to handle is flowed out.The inherent filter material layer of reactor body below is provided with aeration tube 2.Its aeration tube 2 is divided into lower, anaerobic and top aerobic zone with reactor body inside, and it can remove all degradable pollutents, carbon based pollutants (COD and BOD), suspended substance (SS), ammonia nitrogen and nitrate (being total nitrogen).

The reactor body bottom also is connected with recoil inlet pipe 6, and recoil inlet pipe 6 is positioned at the below of aeration tube 2.

During work, be assigned to the inlet channel of each biological fixation bed bioreactor equably by the water distribution weir from the water that one-level is handled or second-stage treatment is come out, flow into the distributing flue 5 of biological fixed-bed reactor bottom then by water inlet pipe gravity, sewage enters in the whole reactor body by the distributing flue of biological fixed-bed reactor bottom, and reactor body is realized uniform water distribution on the inherent whole cross section.Current are through being attached with the filtrate of microorganism, and under the effect of the oxygen that bottom aeration tube 2 is provided, the carbon based pollutants in the sewage (COD and BOD) is degraded, and ammonia nitrogen then is oxidized to nitrate.Because the huge and abundant microbial film that adheres on the filtrate, this biological fixed-bed reactor for treatment ability is much higher than activated sludge process.In addition, effluent stream is the direction of compression filtrate through the direction of filter material layer, rather than the direction of expansion filtrate, has also strengthened the crown_interception to suspended matter thus, thereby has no longer needed settling tank.

Under nitrated/denitrifying situation, water outlet after the processing need reflux, and continues to enter in the reactor body after recirculation water and former water mix in inlet channel, and sewage at first enters the anaerobic zone of reactor body bottom, carry out anti-nitration reaction at this, the nitrate in the recirculation water is removed; Enter the aerobic zone on top then, carbon based pollutants is decomposed, ammonia nitrogen is converted into nitrate at this.

Carry out nitration reaction (ammonia nitrogen is had requirement) for common only needing, shared one is positioned at pipe when aeration and recoil air inlet, thereby makes whole filter bed be in oxygen condition, removes most of degradable pollutent, carbon based pollutants (COD and BOD), suspended substance (SS) and ammonia nitrogen.

This reactor recoil Xian Shuili clear water layer of the certain altitude of filter plate top storage, Xian's water pump that need not to recoil can be realized.During back flushing, stop in reactor, to intake and (can on water inlet pipe or canal, automatic valve be installed, be used to stop into water), the gravity that utilizes the clear water layer is along be directed downwards the flow through filter material layer opposite with normal filtration, the flushing of downward water can be gone out filter material layer to trapped substance in minimal path, and be the direction that trapped substance gravity falls, energy efficient and efficient height.Regular reverse flow back flushing can be removed superfluous microbial film and the suspended substance of being held back.In the backwash process, can unite the gas recoil, also annoying recoil, water backwashing hocket, and only use water backwashing at last.After flushing finishes, can pass through distributing flue draining emptying.

According to the difference of removing pollutent, biological fixation bed bioreactor of the present utility model can be divided into the de-carbon type, nitrated type, nitrated/denitrification type and back denitrification type.

If a plurality of reactor co-operation of the present utility model, the aeration tube of each reactor and recoil inlet pipe all are by the confession of same gas blower dike, and gas blower is not out-of-work.Only in the reactor that carries out nitrated/denitrification type, their gas distribution pipe network separates, and is switched by valve.And in single nitrated filter tank, process air and recoil air inlet are same gas distribution pipe networks, and the air feed of dual mode is regulated by the variable valve of reactor inlet.

Claims

1, a kind of biological fixation bed bioreactor, the reactor body bottom is provided with distributing flue, be communicated with water inlet pipe, it is characterized in that: be provided with filter material layer in the reactor body, filter material layer is had a microbial film by several surface attachment proportion is arranged to be stacked less than 1 spherical filtrate and is formed; The top of filter material layer is coated with the filter plate that prevents that filtrate runs off, and filter plate is provided with several filters that is used for water outlet; On the reactor body wall above the filter plate, be provided with water outlet; The inherent filter material layer of reactor body below is provided with aeration tube.

2, a kind of biological fixation bed bioreactor according to claim 1, it is characterized in that: described filter material layer thickness is 3～3.5m.

3, a kind of biological fixation bed bioreactor according to claim 1 and 2 is characterized in that: described reactor body bottom also is connected with the recoil inlet pipe, and the recoil inlet pipe is positioned at the below of aeration tube.