CN2690382Y

CN2690382Y - Intermittent ceramic biological membrane reactor

Info

Publication number: CN2690382Y
Application number: CNU2003201104113U
Authority: CN
Inventors: 张文艺
Original assignee: Anhui University of Technology AHUT
Current assignee: Anhui Polytechnic University; Anhui University of Technology AHUT
Priority date: 2003-10-22
Filing date: 2003-10-22
Publication date: 2005-04-06
Anticipated expiration: 2013-10-22

Abstract

The utility model provides an intermittent ceramic biological membrane reactor used for processing municipal sewage, industrial sewage and domestic sewage, comprising a water inlet, a water outlet, a water distributing device, a ceramic filler layer, an aeration grating, a bracket and a float ball type hydathode. A perforated pipe water distributing device is adopted in the water charging of the reactor, which is good for the sewage to mix and contact with the filler layer rapidly. The measures are adopted in the filler layer such as column annular ceramics immobilized microorganism and complete mixture, etc. Synchronously, the utility model has two actions including a biological adsorption and a biological oxidation, and the utility model can achieve the actions of a common aeration tank and a secondary pool, having the advantages of small volume, high efficiency, good quality of discharging water, simple technology, high automatic degree, etc.

Description

Intermittent type pottery biofilm reactor

Technical field:

The utility model relates to a kind of waste disposal plant, is specifically related to a kind of intermittent type pottery biofilm reactor.

Background technology:

Along with the raising of living standards of the people, environmental consciousness strengthens, and people improve day by day to the requirement of sewage treatment facility, and the migration and variation of organism in environment more and more paid close attention to.Conventional sewage treatment process is for example: Process for Treating Municipal such as traditional activated sludge process, oxidation ditch process, A/O method, biological filter or trade effluent have energy consumption height, investment big, take up an area of defectives such as big, that working cost is high, complex process, level of automation are low.And the utility model provides a kind of new waste disposal plant: intermittent type pottery biofilm reactor.

Summary of the invention:

The purpose of this utility model is achieved in that this reactor is made up of water inlet pipe 4, rising pipe 6, ceramic packing layer 7, water distributor 8, aeration grid 9, float-ball type hydathode 5, collection mud mud discharging device 10 etc., reactor bottom is installed collection mud mud discharging device 10, aeration grid 9 are installed in collection mud mud discharging device 10 tops, and aeration grid 9 are connected by the outer gas meter 2 of pipeline and reactor, blower fan 1; Water distributor 8 is installed in directly over the aeration grid 9, and water distributor 8 is connected by outer liquid meter 3 of pipeline and reactor and water inlet pipe 4; Float-ball type hydathode 5 float-ball type hydathodes 5 are installed on the reactor upper inside wall are connected, be positioned at the reactor upper right side with rising pipe 6; Ceramic packing layer 7 is positioned at directly over the water distributor 8, form by through metal, ring-shaped pottery filler, thin plastic ties, through metal is fixed by bolts on the reactor wall, and the ring-shaped pottery filler lies on the through metal with thin plastic ties series connection, and ceramic ring surface length has microbial film.

The perforated pipe water distributor is adopted in the water inlet of this reactor, helps sewage and contacts with the packing layer mixing rapidly.Packing layer is made filler with ring-shaped pottery, on support, forms crisscross netted three-dimensional arrangement with thin plastic ties bolt.Ring-shaped pottery is for what form through some sintering, and long 20mm, inner and outer diameter are respectively 15mm-25mm.Ceramic packing is through biological treatment or cultivate its surperficial long microbial film that has in the pond.The packing layer bottom is a water distributor, and the aeration grid are below water distributor, and the aeration grid link so that pressurized air to be provided by pipeline and blower fan, and mud discharging device is installed at the bottom of the pond, regularly get rid of the microbial film that wears out, comes off.

Owing to used novel ring-shaped pottery filler, surface-area is big, reaches 3000m ²/ m ³, therefore have good filtration and biological adsorption.Sewage enters reactor in batches, and under aeration stirred effect, all contaminations was at first suspended or immobilized biomembrane absorption, and then was utilized by Institute of Micro-biology, at the bottom of SS that is trapped and the microbial film settling tank that comes off, regularly discharges.Therefore, reactor plays the effect of common aeration tank, second pond simultaneously.Because the existing fixed microorganism of microorganism in the reactor has part suspended biological film cenobium again,, can reach the purpose of removal by the inoculation domestication for some hardly degraded organic substance waste water.Because a large amount of microorganism growth are at the porous ceramics uneven surface, microorganism can not run off, and does not move for a long time to keep its bacterial classification yet.Can realize discontinuous running for some seasonal factory effluents or intermittently discharged sewage.Microbial film is in anoxic or anaerobic state in the pottery annular distance, has good nitrification and denitrification function.Thereby can also have any different with general contact oxidation method as active sludge SBR substitute technology.

The utility model can play the effect of common aeration tank, second pond.Have that volume is little, efficient is high, effluent quality is good, technology is simple, the level of automation advantages of higher.Be applicable to Treating Municipal Sewage, trade effluent and sanitary sewage.The utility model has following advantage compared to existing technology:

(1) floor space is little, and technical process is simple

Because ceramic microbial film volumetric loading is big, can reach 4-7kgBOD ₅/ m ³.d, for the 3-8 of routine biological treatment doubly, so its floor space also is the 1/4-1/6 of common process.The packing layer high-specific surface area can make the interior microbial biomass of reactor reach 10-12g/L.High concentration microorganism makes the volumetric loading in the reactor increase.In addition, existing sewage treatment facility (for example SBR) can not satisfy current environmental requirement, can transform again, changes filler and other facility, can reach dilatation and purpose up to standard, thereby saves a large amount of initial investments.

(2) high-quality treat effluent;

When volumetric loading is 5kgBOD ₅/ m ³.d the time, its water outlet BOD, COD can be stabilized in 30mg/L, below the 100mg/L, satisfy state environmental emissioning standard.Water reuse in after sterilization, can be used for.Service data shows, uses ceramic biofilm reactor to handle when the pretreated coking chemical waste water of anaerobism, and volumetric loading is 4.0kgCOD/m ³.d the time, its COD, NH ₃-N goes out water concentration average out to 86.3mg/L, and 12.7mg/L has reached discharging standards.The city domestic sewage result shows, when volumetric loading is 4.5kgBOD ₅/ m ³.d the time, water outlet COD, BOD ₅, NH ₃-N, TP are respectively 14mg/L, 2.8mg/L, and 0.4mg/L, 0.05mg/L has reached city domestic sewage reuse water quality standard.

(3) reduced investment, working cost are low

Because entire operation is all carried out in a pond, be water inlet aeration phase, aeration biochemical reaction period, precipitation phase, drainage period, lay-up period (with the SBR resemble process) by the time sequence, its operating device and SBR are also basic identical, the technical equipment maturation.

(4) level of automation height is easy to computer program control, realizes unmanned.

Because technical equipment is few, flow process is simple, and expense is significantly less than conventional secondary biochemical treatment, while ceramic packing oxygen-transfer efficiency height, less energy consumption.Ceramic packing is the inorganic sintered material, and is durable in use, and equipment maintenance cost is lower, need not staff on duty, can save most people's expenses of labour.

Description of drawings:

Accompanying drawing 1 intermittent type pottery biofilm reactor structural representation

Among the figure: 1-blower fan, 2-gas meter, 3-liquid gas meter, 4-water inlet pipe, 5-float-ball type hydathode, 6-rising pipe, 7-ceramic packing layer, 8-water distributor, 9-aeration grid, 10-collection mud mud discharging device, 11-shore pipe

Process flow diagram when accompanying drawing 2 the utility model use

Accompanying drawing 3 packing layer vertical views

Among the figure: 12-DN32 water pipe, 13-DN20 tracheae, 14-ceramic packing

Accompanying drawing 4 gas distributions, water distributor master drawing

Among the figure: 15-aeration grid, 16-aerator nipple orifice φ 10,17-DN15 water distribution transverse tube (the water distribution transverse tube is a perforated pipe, and the below of water distribution transverse tube is the aeration grid, and the aerator nipple orifice is arranged on the aeration grid)

Accompanying drawing 5 ring-shaped potteries

Embodiment:

Describe the utility model in detail below in conjunction with drawings and Examples:

As Fig. 1, shown in Figure 3, the utility model is made up of water inlet pipe 4, blower fan 1, gas meter 2, liquid meter 3, water distributor 8, aeration grid 9, collection mud mud discharging device 10, float-ball type hydathode 5, rising pipe 6, shore pipe 11, ceramic packing layer 7 and ring-type porous ceramics filler etc., mud discharging device is installed in the round pool bottom of reactor, the aeration grid are installed in the mud discharging device top, in pool wall, the aeration grid are connected by the outer gas meter of pipeline and reactor, blower fan the aeration grid with bolting; Water distributor is installed in directly over the aeration grid, also uses bolting on reactor wall, and water distributor is connected by the outer liquid meter of pipeline and reactor; Packing layer is positioned at directly over the water distributor; The float-ball type hydathode is installed on the reactor upper inside wall.Packing layer is made up of through metal, ring-type porous ceramics ring, thin plastic ties, and through metal is fixed by bolts on the pool wall, is the packing layer bracing member, and ring-type porous ceramics ring lies on the through metal with thin plastic ties series connection; Ceramic ring surface length has microbial film;

Technical process intention when Fig. 2 uses for the utility model.Its uses ring-type porous ceramics filler, after biological culture, domestication, microbial film is arranged in that its surface is long, and aeration grid aeration at the bottom of the pond, sewage adhere to these and the microbial film that comes off fully contacts, and the organism in the waste water is fully degraded.After aeration stopped, whole reactor just was equivalent to an inclined tube (plate) settling tank, and the ring-shaped pottery string is exactly inclined tube (plate), and its sedimentation function is far above general SBR pond.The part biological film that propagation comes off is regularly discharged by the collection mud at the bottom of the pond, mud discharging device.Clear liquid is discharged by the float-ball type hydathode on the precipitation.

The water distributor of sewage at the bottom of being located at the pond evenly enters reactor, and the pressurized air that the while blower fan provides enters reactor through the aeration grid.Because aeration is in the bottom of water distributor, thereby help fully mixing up of sewage and air, the transfer rate of raising oxygen.Compressed-air actuated vigorous agitation simultaneously makes sewage fully contact with microbial film on the packing layer, helps the carrying out of biochemical reaction.In the mixing process of air and sewage, the part biological film on the ceramic packing comes off.These microbial films that come off are finished degraded, purification to organic pollutant in the sewage with constituting microflora in the ceramic biofilm reactor attached to microbial film on the ceramic packing.

As shown in Figure 4, be water distribution of the present utility model, gas distribution (aeration grid) master drawing, water distributor is descending at last, aeration grid, and air water thorough mixing, stirring are guaranteed in the two acting in conjunction.

Be illustrated in figure 5 as single ceramic ring of the present utility model.Its long 20mm, inner and outer diameter is respectively the porous ceramics of 15mm～25mm.In the reactor with thin plastic ties bolt on support, form crisscross netted 3-D filler layer.

The utility model is except that carrying out sewage biochemical reactor, and itself is the double as settling tank again, ceramic packing layer double as precipitation inclined plate (inclined tube), and the bottom also is provided with collection mud, mud discharging device.Its essence is an integral type sewage processing reaction equipment.It is little to have floor space, and technical process is simple, and reduced investment, working cost are low, is easy to computer program control, realizes advantages such as unmanned.Being particularly suitable for big, the seasonal occasion strong and that be interrupted draining of existing saprobia aeration tank, second pond and the transformation of SBR pool process and soil anxiety, the fluctuation of the sewage water yield uses.

Embodiment: in planar diameter is 8m, highly is that packing layer is the cylindrical ceramic ring in the cylindrical intermittent type pottery biofilm reactor of 6m, and height 2.8m. packing layer top is 2.3m to reactor top, packing layer bottom 0.9m at the bottom of the reactor.Aeration grid and water distributor are installed in 0.4m, 0.6m place at the bottom of the pond respectively.Cycle of operation of reactor is 6h, wherein restraint-type water inlet 0.5h, aeration 4h, precipitation 0.5h, draining 0.5-1.0h.4 cycles of one day operation.When the BOD5 volumetric loading is 5.5kg/m ³.d, NH ₃-N load is 0.9kg/m ³.d, gas-water ratio 5: 1 o'clock, this reactor every day can be with 700m ³Sanitary sewage in BOD ₅Reduce to 10mg/L from 150mg/L, NH ₃-N reduces to 3.5mg/L from 28.5mg/L.

Claims

1, a kind of intermittent type pottery biofilm reactor, form by water inlet pipe (4), rising pipe (6), ceramic packing layer (7), water distributor (8), aeration grid (9), float-ball type hydathode (5), collection mud mud discharging device (10) etc., it is characterized in that: reactor bottom is installed collection mud mud discharging device (10), aeration grid (9) are installed in collection mud mud discharging device (10) top, and aeration grid (9) are connected by gas meter (2), blower fan (1) outside pipeline and the pond; Water distributor (8) is installed in directly over the aeration grid (9), and water distributor (8) is connected by liquid meter (3) outside pipeline and the pond and water inlet pipe (4); Body upper inside wall upper right side, pond is installed float-ball type hydathode (5) and is connected with rising pipe (6); Ceramic packing layer (7) is positioned at directly over the water distributor (8), form by through metal, ring-shaped pottery filler, thin plastic ties, through metal is fixed by bolts on the pool wall, and the ring-shaped pottery filler lies on the through metal with thin plastic ties series connection, and ceramic ring surface length has microbial film.