CN204281508U - A kind of without the need to repeating the domestic sewage processing system adding bacterial classification - Google Patents

Abstract

The utility model relates to a kind of domestic sewage processing system without the need to repeating to add bacterial classification, comprises the water leg connected successively, anaerobism groove, microorganism contact groove, and No. 1 departs from liquid separator tank, microbe filter groove, and No. 2 depart from liquid separator tank, sterilization letdown tank; Be provided with electrolyzer in described anaerobism groove, in described microorganism contact groove, be provided with microorganism contact device; Microbe carrier is provided with in described microbe filter groove.The utility model used device is few, reduce running cost, without the need to adding flocculation agent, adding bacterial classification without the need to repeating.

Description

A kind of without the need to repeating the domestic sewage processing system adding bacterial classification

Technical field

The utility model belongs to sewage treatment area, particularly relates to a kind of domestic sewage processing system without the need to repeating to add bacterial classification.

Background technology

Traditional sewage treatment process: sewage-grid process-settling pit-pond-biological treatment-secondary sedimentation-coagulating sedimentation-water outlet of just forming sediment.

First, sewage disposal needs professional and technical personnel's long-time maintenance, and its maintenance cost is also relatively high.Although it comprises automation system, level of automation is lower.The purifying treatment of sewage is a systems engineering, usually needs multiple operating unit to cooperate.These operating units are isolated the worry that sets the exam, is often difficult to obtain desirable effect.Therefore, how in same sewage disposal system, to realize distributing rationally of each operating unit, thus reduce the gross investment of system facility, the overall operation cost reducing equipment, the minimizing injected volume of chemical agent and the excess sludge discharge amount of whole system, be key subjects of sewage treatment industry.

Secondly, traditional sewage water treatment method cannot remove the organic pollutant nitrogen phosphorus contained in sewage, can not fundamentally contaminated solution problem.In precipitation process process, artificial or other modes can add flocculation agent the material state of reaching capacity of not free settling is precipitated, this can cause trouble to a certain degree.And for different polluted water, often use pressure filter, adsorption unit or refining plant etc.Suitable large of the input of equipment, it is higher to take up an area space requirement.

At present, bio-flocculation process is also a kind of important method of wastewater treatment, requisite operating unit often in engineering of water treatment, especially to the process of high concentrated organic wastewater, used water difficult to degradate, toxic waste water, this technology best at present deals with approach both at home and abroad.The particulate be dispersed in water can not be separated with water effectively because having coagulation stability and sedimentation stability, for making its unstability, usually needs by means of flocculation agent.The flocculation agent used in water treatment is various in style, usually can be divided into several large classes such as inorganic salts flocculation agent, organic polymer coargulator, natural organic high-molecular flocculant, Synthetical Organic Polymeric Flocculants.Inorganic flocculating agent low price, but can have a negative impact to human health and ecotope; Although organic polymer coargulator consumption is few, scum silica frost output is few, and flocculation ability is strong, flco is easily separated, oil removing and oil removal effective, but the residual monomer of this kind of superpolymer has " three cause " effect (teratogenesis, carcinogenic, mutagenesis), thus makes its range of application be restricted.

Needing to add chemical floc in existing sewage water treatment method makes sewage carry out flocculation reaction.At present, domestic sewage work commonly uses polymerize aluminum chloride (PAC) or polyacrylamide (PAM) makees flocculation agent, adds after dissolving in advance during use in large-scale dissolving tank again.A large amount of consumption of these chemical agents not only increase the running cost of enterprise, and mud produced in addition is also easy causes secondary pollution to environment.Except the mud that flocculation unit produces, secondary sedimentation basins also has a large amount of excess sludge and discharges, and this two portions excess sludge is sent between sludge thickener and sludge dewatering.Huge sludge discharge is also allow the problem of numerous sewage disposal enterprises headache.

Therefore utilize the organic pollutant in microbiological deterioration waste water, the usage quantity of minimizing flocculation agent is the task of top priority in Modern sewage process.

Finally, the reason that traditional microbe carrier designs because of materials and structures, has lengthy and tedious and that effect is low weak point.For solving the weak point that traditional wastewater process exists, it is exactly primarily the problem of fundamentally contaminated solution.Organic pollutant-nitrogen phosphorus is separated out by the mode of electrolysis, and microbe carrier can be utilized to be oxidized by the organism in sewage-nitrogen phosphorus, and then thoroughly eliminates the content of nitrogen phosphorus in sewage.The pollution again of water body is eliminated completely, and output moisture is naturally just clean.

Summary of the invention

For above-mentioned the deficiencies in the prior art, the technical problems to be solved in the utility model is to provide and a kind ofly reduces equipment investment, reduces running cost, without the need to adding flocculation agent, adding the domestic sewage processing system of bacterial classification without the need to repeating.

For solving the problems of the technologies described above, the technical solution of the utility model is as follows:

Without the need to repeating the domestic sewage processing method adding bacterial classification, it is characterized in that: comprise the steps:

1) impurity is separated with sewage

Sewage is introduced water leg, and water leg upper strata is anaerobism groove; Contamination precipitation in sewage is at water leg, and moisture swims in upper strata anaerobism groove, usually can also arrange the T-shaped pipe that more flows and prevent scum silica frost from more flowing on anaerobism groove;

2) precipitation of nitrogen phosphorus in sewage

By step 1) in the sewage of anaerobism groove be incorporated into Flow-rate adjustment groove, between anaerobism groove and Flow-rate adjustment groove, arrange electrolyzer, under the electrolytic action of electrolyzer, in sewage, nitrogen phosphorus composition is separated out;

3) microorganism is to the oxide treatment of nitrogen phosphorus and elimination

By step 2) in introduce microorganism contact groove with the sewage of nitrogen phosphorus composition in Flow-rate adjustment groove, be provided with the microorganism contact carrier device of attached microbial in microorganism contact groove, the nitrogen phosphorus composition in microorganism and sewage reacts and eliminates the nitrogen phosphorus in sewage; The abundant aeration of microorganism contact groove, in sewage, amount of oxygen maintains 2 ~ 3ppm, and sewage temperature controls between 15 ~ 25 DEG C, and sewage PH maintains between 6.0 ~ 8.5;

4) primary sedimentation of impurity

By step 3) in introduce No. 1 through the sewage of contact microorganism contact carrier device and depart from liquid separator tank, precipitated impurities departs from liquid separator tank lower end from No. 1 and discharges, and sewage departs from liquid separator tank top from No. 1 and discharges;

5) filtration treatment of microorganism

By step 4) middle sewage introducing microbe filter groove of discharging, the microbial deactivation apparatus of attached microbial is provided with in microbe filter groove, described microbial deactivation apparatus is made up of microbe carrier, and sewage contacts with the microorganism on microbe carrier and filters; The abundant aeration of microbe filter groove, in sewage, amount of oxygen maintains 2 ~ 3ppm, and sewage temperature controls between 15 ~ 25 DEG C, and sewage PH maintains between 6.0 ~ 8.5;

6) secondary sedimentation of residual impurity

By step 5) in the sewage that filters introduce No. 2 and depart from liquid separator tanks, precipitated impurities departs from liquid separator tank lower ends from No. 2 and discharges, and sewage departs from liquid separator tank tops from No. 2 and discharges;

7) water outlet

Step 6) in discharge sewage enter sterilization letdown tank carried out disinfection by solid chlorine, obtain clean water quality.

According to above-mentioned technical process, about of the present utility model a kind of without the need to repeating its treatment system of sanitary sewage of adding bacterial classification, its device comprises the water leg connected successively, anaerobism groove, microorganism contact groove, No. 1 departs from liquid separator tank, microbe filter groove, No. 2 depart from liquid separator tank, sterilization letdown tank; The described device connected successively is regulated by integrated appliance controling plate; Be provided with electrolyzer in described anaerobism groove, in described microorganism contact groove, be provided with microorganism contact carrier device; Microbe carrier is provided with in described microbe filter groove.The sewage flowed in anaerobism groove flows into sewage disposal device by intercepting sewer, and anaerobism groove has the function of larger solids magazins' layout.Microorganism contact carrier device in microorganism contact groove can increase the contact surface of sewage and microorganism, prevents occlusion phenomena.No. 1 departs from the mud that liquid separator tank contacts microorganism microorganism and the disengaging of flowing out in groove, through natural sedimentation, removes mud by solid-liquid separation.Microbe carrier in microbe filter groove has remarkable filtration capacity, efficiently can process the pollution substance of lower concentration.No. 2 functions departing from liquid separator tank are consistent with the function that No. 1 departs from liquid separator tank.Sterilization discharge pond colonizes in the intestinal bacteria of releasing in water and other bacteriums reach emission standard by killing, and is applicable to disinfection by chlorine.

To contact between groove with microorganism at described anaerobism groove and be provided with Flow-rate adjustment groove, electrolyzer is between anaerobism groove and Flow-rate adjustment groove.Arrange Flow-rate adjustment groove reason be because: usually in Flow-rate adjustment groove, effluent stream is fashionable, the influx of different time periods is different with the proterties of pollution substance and concentration, in view of the characteristic that sewage is this, store flow, with in the flow of homogenizing and a certain amount of concentration effluent stream in a subtle way biological groove, can be stable sensitization microorganism is provided.

Described microorganism contact carrier device comprises the net cylinder of both ends open, upper end cover, lower end cover and microorganism contact element; Described upper end cover covers the upper end at net cylinder, and lower end cover covers the lower end at net cylinder; Described microorganism contact element is positioned at the inner chamber of net cylinder and is fixed on upper end cover and lower end cover.

Described microorganism contact element is U-shaped; The two ends of described U-shaped are passed lower end cover and are fastened on upper end cover.

Described microbe carrier comprises net cylinder or the net cage of one end open, can cover the square of net cylinder or net cage, be placed in net cylinder or net cage can the filtering material layer of attached microbial; Described filtering material layer comprises filtering material upper strata and filtering material lower floor; The proportion of described filtering material lower floor is greater than the proportion on filtering material upper strata; The height of described filtering material lower floor is less than 1/2 of net cylinder or net cage height, and the density of described microbe carrier is less than the density of sewage.

Described filtering material upper strata is the porous structural body that resin, fiber and metallic substance are made.

Described filtering material lower floor adds the obtained porous structural body of diatomite, zeolite facies mixing in loess, clay, lime, kaolin.

The utility model is disposed of sewage by biomembrance process, and biomembrance process is a kind of aerobic biological effluent treatment method parallel with activated sludge process, mainly removes organic pollutant that is deliquescent in waste water and colloidal.Its technique makes the sewage containing nutritive substance and microbe inoculation in the surface flow of filtrate, and after certain hour, microbes is attached to filter material surface and breeds and grow, and forms the microbial film that one deck is thin.Generate microbial film on breed a large amount of microorganisms, their absorption and degradation water in organic pollutant, the purify waste water effect same with active sludge can be played.

Microbial film has the wetting ability of height, sewage constantly flows through in the process on its surface, one deck attachment water layer is always there is outside it, microbial film a large amount of various types of microorganisms on surface and certain depth growth and breeding, and---bacterium---the protozoic food chain that is formed with organic pollutants.After biofilm formation and maturation, microorganism constantly breeds, and biomembranous thickness constantly increases, and thickens to a certain degree, is predominantly converted to anaerobic state at subsurface microbial film, forms anaerobe rete; The microbial film formed on liquid level and on liquid level changes aerobic conditions into, forms aerobiont rete, and like this, microbial film is just made up of with anaerobism is two-layer aerobic, and Each performs its own functions.

The beneficial effects of the utility model are:

The utility model be full-automatic brand-new design without the need to manual maintenance, so daily input is almost nil.The wherein cultivation of microorganism and breeding is also that the self-recovery that designed by special carrier coupled system and adjustment reach best effect.By the automatic monitoring measure means of liquid level, ensure the good operation conditions of equipment.

By above-mentioned art breading flow process, can the multiple polluted water of compatible processing, need not use flocculation agent etc. or other off-set facility, the utility model provides and a kind ofly reducing equipment investment, reducing running cost, without the need to adding flocculation agent, without the need to repeating to add the sanitary sewage automated processing system of bacterial classification.

Accompanying drawing explanation

Fig. 1 is the schematic diagram for the treatment of system of the present utility model;

Fig. 2 is process method flow chart of the present utility model;

Fig. 3 is the stereographic map of the utility model microorganism contact carrier device;

Fig. 4 is the sectional elevation in A-A face in Fig. 3;

Fig. 5 is the structural representation of U-shaped of the utility model;

Fig. 6 is the stereographic map of the utility model net cylinder;

Fig. 7 is the stereographic map of the utility model net cage;

Fig. 8 is the structural representation of the utility model microbe carrier;

In figure: 1, net cylinder; 2, lower end cover; 3, upper end cover; 4, U-shaped; 5, net cylinder; 6, net cage; 7, square; 8, filtering material upper strata; 9, filtering material lower floor.

Embodiment

Below in conjunction with embodiment, utility model content of the present utility model is described in further detail.Should understand, embodiment of the present utility model is unrestricted the utility model for illustration of the utility model only, when not departing from the utility model technological thought, according to ordinary skill knowledge and customary means, the various replacement made and change, all should be included in scope of the present utility model.

As shown in Fig. 1 Fig. 2, the water leg connected successively, anaerobism groove, microorganism contact groove, No. 1 departs from liquid separator tank, microbe filter groove, and No. 2 depart from liquid separator tank, sterilization letdown tank; The described device connected successively is regulated by integrated appliance controling plate; Be provided with electrolyzer in described anaerobism groove, in described microorganism contact groove, be provided with microorganism contact carrier device; Microbe carrier is provided with in described microbe filter groove.To contact between groove with microorganism at described anaerobism groove and be provided with Flow-rate adjustment groove.

Described microorganism contact carrier device comprises the net cylinder 1 of both ends open, upper end cover 3, lower end cover 2 and microorganism contact element; Described upper end cover 4 covers in the upper end of net cylinder 1, and lower end cover 2 covers the lower end at net cylinder 1; Described microorganism contact element passes the inner chamber of net cylinder 1 and is fixed on upper end 4 lid and lower end cover 2.Described microorganism contact element is U-shaped 4; The two ends of described U-shaped 4 are passed lower end cover 2 and are fastened on upper end cover 3.

Described microbe carrier comprises net cylinder 5 or the net cage 6 of one end open, can cover the square 7 of net cylinder 5 or net cage 6, be placed in net cylinder 5 or net cage 6 can the filtering material layer of attached microbial; Described filtering material layer comprises filtering material upper strata 8 and filtering material lower floor 9; The proportion of described filtering material lower floor 9 is greater than the proportion on filtering material upper strata 8; The height of described filtering material lower floor 9 is less than 1/2 of net cylinder 5 or net cage 6 height, and the density of described microbe carrier is less than the density of sewage.

Described filtering material upper strata 8 is the porous structural body that resin, fiber and metallic substance are made.

Described filtering material lower floor 9 adds the obtained porous structural body of diatomite, zeolite facies mixing in loess, clay, lime, kaolin.

According to above-mentioned Sewage treatment systems, concrete technology step of the present utility model is as follows:

1) municipal effluent flows into water leg, and water leg upper strata is anaerobism groove; Contamination precipitation in sewage is at water leg, and moisture swims in upper strata anaerobism groove.

Also have accumulated the waste sludge and the precipitation solids that depart from foldback inside liquid separator tank from No. 1 and No. 2 in anaerobism groove, will mud extraction be carried out annually, prevent excessive mud from causing the decline of sewage treatment facility function.Within 1 year, adhere to cleaning at least one times.Sludge settling utilizes pump in water bottom pond, and then the water yield being equivalent to pond 1/3rd is cleaned bottom pond to the transfer of Flow-rate adjustment groove, and the situation preventing the stagnation due to pond base sludge from causing processing efficiency low occurs.

A large amount of domestic refuses flows into, and suspended solid or the former stream pipe of impurity thing blocking, situation flowing water occurring obstructed makes water level rise, and now utilizes the impurity thing in proper implements removal pipe.

The situation that excessive stink occurs, pond internal precipitate thing is regularly process not, and take a breath when organism rots and when fecaluria flows into bad causing, and should check that each several part takes appropriate measures.

2) by step 1) in the sewage of anaerobism groove be incorporated into Flow-rate adjustment groove, between anaerobism groove and Flow-rate adjustment groove, arrange electrolyzer, under the electrolytic action of electrolyzer, in sewage, nitrogen phosphorus composition is separated out;

In order to make in sewage organic substance microorganism contact groove in fully decompose, need in Flow-rate adjustment groove abundant aeration, confirm to stir in Flow-rate adjustment groove whether normally run by ventilation during aeration, oxygen will fully supply, and makes the content of the dissolved oxygen of sewage in Flow-rate adjustment groove maintain 5 ~ 10ppm.Confirm water level in Flow-rate adjustment groove and whether smooth and easyly transmit, utilizing flow valve, the disposable transport of crossing volume of quantitative regulable control.Also can guarantee that sewage in Flow-rate adjustment groove goes bad by aeration, go out stink.

3) by step 2) in introduce microorganism contact groove with the sewage of nitrogen phosphorus composition in Flow-rate adjustment groove, be provided with the microorganism contact carrier device of attached microbial in microorganism contact groove, the nitrogen phosphorus composition in microorganism and sewage reacts and eliminates the nitrogen phosphorus in sewage;

In microorganism contact groove, concerning running, the most important thing is that air capacity (air flow) and quantitative sewage flow into.Maintenance air capacity should be made at dissolved oxygen content 2 ~ 3ppm, abundant oxygen supply.In microorganism contact tank, it is normal that the state of microorganism is rendered as brown, the situation that black or frowziness occur, and explanation is that dissolved oxygen deficiency should increase air flow.The adjustment of air flow regulates according to fan running, and operating intervals regulates and can set difference according to the dustiness flowing into water.

The control of sewage temperature:

Because too low water temperature causes the chemical reaction of microorganism low, (MLSS concentration is writing a Chinese character in simplified form of mixed genetic-neural network now to increase MLSS concentration, it is also called mixed solution sludge concentration, the gross weight of what its represented is activated sludge solids thing contained in the unit volume mixed solution of aeration tank.) reduce F/M (organic loading rate, is also sludge loading, and F refers to organism amount, and M refers to microbial biomass, refers to the quantity of the inorganics that the active sludge of unit weight bears within the unit time) ratio.

The zone of reasonableness of water temperature is about 15 ~ 25 DEG C, during due to less than 10 DEG C or more than 35 DEG C, the growth of microorganism is low, needs to improve DO (dissolved oxygen, molecular oxygen in air is dissolved in water and becomes dissolved oxygen, represents with the milligram number of foreign flavour in every premium on currency).Aeration time maintains long-time aeration state, during DO excessive concentration, makes it to maintain rational DO concentration by regulated valve.

The control of sewage PH:

PH generally maintains 6.0 ~ 8.5, and best PH is 7.2 ~ 7.8.If active sludge decomposes when sewage is strongly-acid, active sludge cohesion when sewage is strong basicity.

The control of Oil in Sewage Water part:

Because the timesharing of floss attaching oil lightens, precipitation threshold is bad, and the oil content of high density installs oily water separation instrument in water inlet.Vegetalitas oil content is easily decomposed by microorganism, and animality oil content can decompose a part on a small quantity, and a large amount of containing time-division solution difficulty, mineral oil content decomposes difficulty, separately will establish separometer.

If the control of toxicant: the inflow that should prevent toxicant to greatest extent, should reduce F/M when flowing into careless.

The control of DO:

DO:1.0 ~ 2.0ppm that aeration tank is suitable.

When DO is too high, cross aeration and bring out sludge decomposition phenomenon, oxidizing reaction occurs, and nitrogen produces in a large number thus brings out sludge bulking.

When DO is too low, the foam of reactive tank rises, and reduction reaction occurs, the dirt that sewage becomes, and reactive tank occurs to rot.

The control of MLSS: MLSS is generally most suitable between 1000 ~ 2000ppm.

The selection of microorganism:

Aerobic heterotrophism bacterium

Bacterial species	Microbial species
		Micrococci	Micrococcus
Staphylococcus	Staphylococcus
		Coryneform bacteria	Coryneforms
Nocardia	Nocardioforms
		Genus bacillus	Bacillus
Chang Gan section bacterium	Enterobacteriaceae
		Aeromonas	Aeromonas
Alcaligenes	Alcaligenes
		Pseudomonas alba	Pseudomonas
Flavobacterium	Flavobacterium
		Catarrhalis	Moraxella
Acinetobacter calcoaceticus	Acinetobacter

The bacterium of oxidation inorganics

Microbial film is formed according on the microorganism contact element that different impurities in sewage, different treatment condition can select above-mentioned different microorganism to be attached to microorganism contact carrier device.

4) by step 3) in introduce No. 1 through the sewage of contact microorganism contact carrier device and depart from liquid separator tank, precipitated impurities departs from liquid separator tank lower end from No. 1 and discharges, and sewage departs from liquid separator tank top from No. 1 and discharges;

Continuously carry mud during initial operating stage, make the activation of microorganism of microorganism contact tank.After certain hour, grasp microbe condition, reduce the extraction that carrying amount increases mud, the mud of discharge enters in anaerobism groove.

Having the situation of bubble or foam generation from departing from liquid separator tank inner bottom part, is that the mud after precipitation becomes anaerobic state, now increases and departs from mud discharge capacity in liquid separator tank.

The extraction of what water level in solid-liquid separation tank reduced is waste sludge is excessive to be caused, and regulated valve or timing register reduce the output of mud.

5) by step 4) middle sewage introducing microbe filter groove of discharging, the microbial deactivation apparatus of attached microbial is provided with in microbe filter groove, described microbial deactivation apparatus is made up of microbe carrier, and sewage contacts with the microorganism on microbe carrier and filters; The abundant aeration of microbe filter groove, in sewage, amount of oxygen maintains 2 ~ 3ppm, and sewage temperature controls between 15 ~ 25 DEG C, and sewage PH maintains between 6.0 ~ 8.5;

As untreated pollution substance 2 treatment process in microorganism contact groove, carrier is had to fill, for the treatment effect increasing organism and inorganics is attached with the strong microorganism of filtering function.Processing parameter is with reference to the processing parameter in microorganism contact groove.

6) by step 5) in the sewage that filters introduce No. 2 and depart from liquid separator tanks, precipitated impurities departs from liquid separator tank lower ends from No. 2 and discharges, and sewage departs from liquid separator tank tops from No. 2 and discharges; No. 2 disengaging liquid separator tanks are consistent with the operation that No. 1 departs from liquid separator tank.

7) step 6) in discharge sewage enter sterilization letdown tank obtain clean water quality.

The utility model adopts solid chlorine to sterilize, and should avoid and fire, heat, butter class during use, by, cloth, other natural materials contact.The most purity of solid chlorine on market is that 70% sealed vessel has foul smell to produce when opening, and should put on mouth mask and plastic glove when taking solid chlorine.Should rinse well with water immediately when solid chlorine touches skin, should be noted during use.

Claims (7)

1. without the need to repeating the domestic sewage processing system adding bacterial classification, it is characterized in that: comprise the water leg connected successively, anaerobism groove, microorganism contact groove, No. 1 departs from liquid separator tank, microbe filter groove, and No. 2 depart from liquid separator tank, sterilization letdown tank; Be provided with electrolyzer in described anaerobism groove, in described microorganism contact groove, be provided with microorganism contact device; Microbe carrier is provided with in described microbe filter groove.

2. according to claim 1ly a kind ofly adding the domestic sewage processing system of bacterial classification without the need to repeating, it is characterized in that: to contact between groove with microorganism at described anaerobism groove and be provided with flow adjustment tank.

3. according to claim 1ly a kind ofly adding the domestic sewage processing system of bacterial classification without the need to repeating, it is characterized in that: described microorganism contact device comprises the net cylinder of both ends open, upper end cover, lower end cover and microorganism contact element; Described upper end cover covers the upper end at net cylinder, and lower end cover covers the lower end at net cylinder; Described microorganism contact element is positioned at the inner chamber of net cylinder and is fixed on upper end cover and lower end cover.

4. according to claim 3 a kind of without the need to repeating the domestic sewage processing system adding bacterial classification, it is characterized in that: described microorganism contact element is U-shaped; The two ends of described U-shaped are passed lower end cover and are fastened on upper end cover.

5. according to claim 1 a kind of without the need to repeating the domestic sewage processing system adding bacterial classification, it is characterized in that: described microbe carrier comprises net cylinder or the net cage of one end open, the square of net cylinder or net cage can be covered, be placed in net cylinder or net cage can the filtering material layer of attached microbial; Described filtering material layer comprises filtering material upper strata and filtering material lower floor; The proportion of described filtering material lower floor is greater than the proportion on filtering material upper strata; The height of described filtering material lower floor is less than 1/2 of net cylinder or net cage height, and the density of described microbe carrier is less than the density of sewage.

6. according to claim 5 a kind of without the need to repeating the domestic sewage processing system adding bacterial classification, it is characterized in that: described filtering material upper strata is the porous structural body that resin, fiber and metallic substance are made.

7. according to claim 5ly a kind ofly adding the domestic sewage processing system of bacterial classification without the need to repeating, it is characterized in that: described filtering material lower floor adds the obtained porous structural body of diatomite, zeolite facies mixing in loess, clay, lime, kaolin.