CN2773061Y

CN2773061Y - Biological-membrane waste water treater

Info

Publication number: CN2773061Y
Application number: CNU2005200809262U
Authority: CN
Inventors: 张成禄; 张洪昌; 刘贤伟
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2005-03-18
Filing date: 2005-03-18
Publication date: 2006-04-19
Anticipated expiration: 2015-03-18

Abstract

A new-type biological-membrane waste water treating device belongs to the technical field of environmental science and engineering. The utility model comprises an upper part, a middle part and a lower part, wherein the upper part, the middle part and the lower part respectively form the shape of a cylindrical tower, the upper part is provided with an aerobic biological-membrane reactor, the middle part is provided with an aerobic biological filtering tank, the lower part is provided with an amphoteric amaerobic zone, the upper part and the middle part are added with fillers and provided with perforated pipes or shower heads, the lower part is provided with an aging resistant plastic rope knot with toughness and the fillers are of granulating slag. The utility model has good treating capacity for waste water with high BOD, and furthermore, the height of an amaerobic segment can be adjusted according to the size of BOD of waste water so as to realize the optimum utilization of the device and to remove the BOD to the maximum extent. The device uses granulating slag as the fillers, wherein the granulating slag is waste for a steel plant; thereby, the utilization of waste is realized. Due to the adoption of the biological-membrane process, the amount of sludge of the biological-membrane process is larger than that of the activated sludge process; thereby, sludge treatment devices and the expenses of the sludge treatment devices are decreased and the treatment expenses are decreased.

Description

A kind of novel membrane-biological membrane sewage treatment equipment

(1) technical field

The utility model relates to a kind of novel amphimicrobian expanded bed, aerobic filter tank, the integrated sewage treatment equipment of aerobic biologic membrane, belongs to the Environmental Science and Engineering field.

(2) background technology

Traditional sewage treatment equipment mostly is simple aerobic or simple anaerobism greatly, aerobic process such as activated sludge process, and biological filter or bio-disc system etc., to high BOD loading waste water, treatment effect can not be satisfactory; Anaerobism method such as digester, anaerobic mud bed, various anaerobe embrane methods etc., though anaerobic process has stronger processing power to high BOD waste water, the BOD of its water outlet is still higher, independent anaerobism method is difficult to reach the requirement of qualified discharge.

(3) summary of the invention

Many shortcomings at present Processes and apparatus existence, the utility model purpose provides a kind of with amphimicrobian expanded bed, aerobic biofilter and biomembrance process coupling, and with triplicity in same equipment, realized that the anaerobic treatment, aerobic treatment of waste water and biomembrance process handle the novel membrane-biological membrane sewage treatment equipment that carries out in same reactor.

This novel membrane-biological membrane sewage treatment equipment comprises the upper, middle and lower part, the upper, middle and lower part is constituted cylinder turriform formula, wherein, top is divided into aerobic biofilm reactor, the middle part is divided into aerobic biofilter, and the bottom is the amphimicrobian district, adds filler in last, middle part, and be furnished with perforated pipe or shower nozzle, be provided with toughness and aging-resistant plastics knot in the lower section.

Described filler is a grain slag.

The utility model is entered waste water by reactor lower part, amphimicrobian expanded bed through the bottom, filler wherein adopts the grain slag of steel mill, it is a kind of industrial waste, again upwards through aerobic biofilter, in the aerobic biofilter, used filler also is a grain slag, water enters aerobic biofilm reactor behind aerobic filter tank, in conversion unit, realize organic degraded and removal, by the top water outlet, and with a part of effluent recycling, not only realize organic degraded, and realized the removal of N (nitrogen) in the water.

The whole flow process of the utility model purification of waste water is as follows: waste water enters conversion unit by the water-in of bottom, its flow velocity should reach and make filler be in swelling state, so just make the waste water filtrate of can flowing through more equably, avoided short flow phenomenon, and make filtrate be difficult for stopping up, give full play to the function of filtrate.In the amphimicrobian expanded bed, organism in the waste water is realized preliminary degraded, and macromole changes small molecules into, is attended by portion gas, as the generation of sulfurous gas etc.On the current direction, through gas distribution system, oxygenation in the water.Arrive aerobic filter bed, here, it is big that the cross section of reactor becomes, and the flow velocity of water reduces, and filler can not expand.The aerobic biologic membrane that organism adheres on filter bed further decomposes, and with the gas partial oxidations frowzy such as sulfurous gas that anaerobic stages produces, has reduced the secondary pollution of anaerobic treatment, and the N in the water (nitrogen) is nitre attitude N (nitrogen) by partial oxidation.After waste water was handled through this two step, the BOD in the water reduced greatly, can't support the large number of biological growth, therefore, establishes an aerobic biofilm reactor that biomass is less relatively on top.Waste water enters aerobic biofilm reactor, and residual organic substances is further decomposed, and with reducing gas oxidations such as remaining sulfurous gas, the secondary pollution that anaerobic stages is produced drops to minimum.Water is overflowed by top after this three step handles, and collects through water leg, and with a part of effluent recycling to water-in, then the nitre attitude N in the water outlet can be reduced to nitrogen by the nitrate reduction bacterium in amphimicrobian stage, thereby escapes into atmosphere, realizes the removal of N (nitrogen) in the water.Like this, organism in the water and N (nitrogen) have obtained effective degraded and removal, realize standard wastewater discharge.

Use the utlity model has following advantage:

1. because anaerobism combines with aerobic, and this equipment is to high BOD waste water good treatment ability again, and, can be according to the size of waste water BOD, the height of adjusting anaerobism section is realized the optimum utilization of this equipment, at utmost removes BOD.

2. the filler that this equipment adopted is a grain slag, is the waste material of steel mill, has realized utilization of waste material.

3. grain slag surface in waste water is weakly alkaline, is easier to bio-film colonization, and treatment effect is good,

4. waste water is handled through amphimicrobian earlier, after aerobic treatment again with effluent recycling, has realized the removal of N (nitrogen) in the water.

5. because the part effluent recycling, the more difficult obstruction of filtrate.

6. because this equipment with three reactor vertical displays, is constructed in unified equipment, reduced floor space, and a part can be built in undergroundly,, also can utilize in winter, and can reduce the part power consumption than being easier to insulation on the ground.

7. owing to adopt biomembrance process, its sludge quantity is wanted specific activity mud method much less, has reduced that mud is got treatment unit and expense, and processing costs reduces.

Description of drawings

Accompanying drawing is the utility model structural representation.

Wherein, 1, the amphimicrobian expanded bed, 2, aerobic biofilter, 3, aerobic biofilm reactor, 4, grain slag, 5, water-in, 6, inlet mouth, 7, overflow the mouth of a river, 8, gas distribution system, 9, the effluent recycling pipe, 10, contact filtrate.

Embodiment

Embodiment: structure as shown in drawings, comprise the upper, middle and lower part, the upper, middle and lower part is constituted cylinder turriform formula, wherein, top is divided into aerobic biofilm reactor 3, and the middle part is divided into aerobic biofilter 2, the bottom is an amphimicrobian expanded bed 1, add grain slag 4 in last, middle part, and be furnished with perforated pipe or shower nozzle, be provided with toughness and aging-resistant plastics knot in the lower section.Working process: waste water enters amphimicrobian expanded bed 1 by the water-in 5 of bottom, and wherein flow velocity is bigger, makes filler 4 be in swelling state, make the waste water filtrate of can flowing through more equably, avoid short flow phenomenon, and made filtrate be difficult for stopping up, given full play to the function of filtrate.In the amphimicrobian expanded bed, organism in the waste water is realized preliminary degraded, and macromole changes small molecules into, is attended by portion gas, as the generation of sulfurous gas etc.Between amphimicrobian expanded bed 1 and the aerobic filter bed 2 gas distribution system is arranged, inlet mouth 6 bubbling airs are arranged, through gas distribution system 8 oxygenation in water.On the current direction, arrive aerobic filter bed 2, here, it is big that the cross section of reactor becomes, and the flow velocity of water reduces, and filler 4 can not expand.The aerobic biologic membrane that organism adheres on filter bed further decomposes, and with the gas partial oxidations frowzy such as sulfurous gas that anaerobic stages produces, has reduced the secondary pollution of anaerobic treatment, and the N in the water (nitrogen) is nitre attitude N (nitrogen) by partial oxidation.After waste water was handled through this two step, the BOD in the water reduced greatly, can't support the large number of biological growth, therefore, establishes an aerobic biofilm reactor 3 that biomass is less relatively on top.Waste water enters aerobic biofilm reactor 3, and the microorganism that residual organic substances is touched on the filtrate 10 is further decomposed, and with reducing gas oxidations such as remaining sulfurous gas, the secondary pollution that anaerobic stages is produced drops to minimum.Water is after this three step handles, overflowing the mouth of a river 7 by top flows out, collect through water leg, and a part of water outlet is back to water-in through return line 9, then the nitre attitude N in the water outlet can be reduced to nitrogen by the nitrate reduction bacterium in amphimicrobian stage, thereby escape into atmosphere, realize the removal of N (nitrogen) in the water.Like this, organism in the water and N (nitrogen) have obtained effective degraded and removal, realize standard wastewater discharge.

Claims

1, a kind of novel membrane-biological membrane sewage treatment equipment, comprise the upper, middle and lower part, it is characterized in that, constitute cylinder turriform formula by the upper, middle and lower part, top is divided into aerobic biofilm reactor, and the middle part is divided into aerobic biofilter, the bottom is the amphimicrobian expanded bed, add filler in last, middle part, and be furnished with perforated pipe or shower nozzle, be provided with toughness and aging-resistant plastics knot on top.

2, a kind of novel membrane-biological membrane sewage treatment equipment according to claim 1 is characterized in that described filler is a grain slag.