CN1654358A

CN1654358A - Method for treating dispersant low-temperature domestic sewage by floating stuffing segregating technique

Info

Publication number: CN1654358A
Application number: CNA2004100441693A
Authority: CN
Inventors: 韩洪军
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2004-12-24
Filing date: 2004-12-24
Publication date: 2005-08-17
Anticipated expiration: 2024-12-24
Also published as: CN1276883C

Abstract

The present invention relates to sewage treatment, and is floated stuffing latticing method of treating dispersed low temperature domestic sewage. The method includes burying reaction tanks underground in the depth of 0.5 m; and separating each operation period in each reaction tank into water intake for 6 hr while aerating, still depositing for 2 hr, decanting water and exhausting sludge for 2.5 hr, letting idle for 1.5 hr and water discharging successively. The present invention can raise the dispersed domestic sewage treating effect in cold area and is suitable for application in cold area.

Description

The method of float filler cellular art breading decentralized low-temperature sewage

Technical field:

The present invention relates to a kind of treatment process of sewage.

Background technology:

In the prior art, biological treatment is adopted in sanitary sewage disposal mostly at home, utilizes organic substance in the microbial metabolism sewage as the nutrition source of self growth and breeding, and organic pollution materials is removed.Microorganism in the waste disposal plant mainly exists with active sludge and biomembranous form, and the microorganism with metabolic activity is the core of dirty water living creature processing technique.Activated sludge process is mainly adopted in the sanitary sewage disposal of northern China cold district at present, but these areas are positioned to the north of north latitude 40 degree, the winter climate severe cold, reach 3～6 months ice period, the average water temperature of sanitary sewage in winter is lower than 10 ℃, and the aeration treatment facility of sanitary sewage disposal factory adopts open-air the layout usually, therefore ubiquity active sludge flco volume is less than normal, loosely organized during winter operation, problem such as microbe population that can degradable organic pollutant in the mud is few, metabolic activity is low, this has directly influenced the effect that sewage work moves in the winter time.General employing reduces measures such as sludge loading, increase mud quantity of reflux, increase dwell time of sewage in sewage treatment project at present, some sewage treatment project even will take the way that is incubated or heats, be used for overcoming the water temperature influence that brings on the low side of sewage, this can increase construction investment and working cost undoubtedly, and the effect of handling also is difficult to be guaranteed.The quantity of wastewater effluent of northern China cold district increases day by day at present, Pollutant levels also are and increase progressively trend, some receiving water bodies are polluted, and the float filler cellular PCSBR art breading decentralized low-temperature sewage that adopts buried SBR method and floating stuffing to form yet there are no report.

Summary of the invention:

When moving in the winter time at present northern China cold district sanitary sewage disposal factory, the problem of few, the poor processing effect of microbial strains quantity in the sewage treatment facility, the object of the present invention is to provide a kind of method of float filler cellular art breading decentralized low-temperature sewage, this method is, a. reaction tank 1 is imbedded underground, end distance face of land 0.5m on the reaction tank 1; B. the process of controlling 1 each cycle of operation of reaction tank is followed successively by: intake 6 hours, and carried out aeration in the time of water inlet, quiescent setting is 2 hours then, strains the water spoil disposal again, and straining water and spoil disposal time is 2.5 hours, and idle 1.5 hours at last, water outlet got final product.The present invention adopts buried mode to utilize underground heat that treatment facility is incubated, and this is not have usedly in the sewage disposal in the past, and this lagging facility has reduced the cost of sewage disposal in winter; By in first lattice 1-1 reaction tank, add floating stuffing increased can degradable organic pollutant matter microbe population, overcome the influence of low temperature from another point of view to biological treatment; On the structure of reaction tank, traditional SBR is improved, adopt float filler cellular (PCSBR) technology, the test that the reaction tank of this structure and size thereof are the contrivers by many times obtains, it has flexible operation modes, can be according to amount of inlet water water quality regulation loop cycle and aeration time, can the optimized choice bacterial classification, anti impulsion load.Thereby can also adopt automated control technology minimizing working strength of workers in the inventive method implementation process and adopt the aerobic sludge Decrement Technique not need the processed excess sludge.Through experiment, adopt float filler cellular of the present invention (PCSBR) art breading decentralized low-temperature sewage, the COD clearance reaches 70～85%, the BOD clearance reaches 80～95%, the SS clearance reaches 80～95%, and effluent quality reaches the primary standard in country's " integrated wastewater discharge standard "; In addition, compare with conventional processes, adopt sewage water treatment method of the present invention can save initial cost 20～35%, save working cost 15～30%, can bear 8～10 ℃ low-temperature sewage, to sum up, the present invention has overcome the shortcoming of dispersion type domestic wastewater treatment project poor processing effect when cold operation, more be applicable to the treatment project of cold district dispersion type domestic wastewater, be beneficial to and apply.

Description of drawings:

Fig. 1 is the structural representation of reaction tank 1 of the present invention, Fig. 2 be the A of Fig. 1 to view, Fig. 3 is the structural representation of embodiment two, Fig. 4 is the structural representation of embodiment three.

Embodiment:

Embodiment one: the treatment scheme of present embodiment float filler cellular art breading decentralized low-temperature sewage is: suction well---promotes water pump---float filler cellular PCSBR reaction tank---water outlet.Treatment process is that a. imbeds reaction tank 1 underground, end distance face of land 0.5m on the reaction tank 1; B. the process of controlling 1 each cycle of operation of reaction tank is followed successively by: intake 6 hours, carry out aeration in the time of water inlet, unlimited aeration mode, the aeration while intaking are adopted in the water inlet of reaction tank, water level in the reaction tank utilizes liquidometer to control, and aerating apparatus adopts micro-hole aerator; Quiescent setting is 2 hours then, and at precipitate phase, the denitrifying bacterium that exists in biomembranous deep layer anaerobic layer and the active sludge bottom anaerobic layer is with NO in the water ₃ ^-Be converted into N ₂Discharge reactive system, polyP bacteria is discharged into part phosphorus in the supernatant liquor under anaerobic state.Strained the water spoil disposal again 2.5 hours, reaction tank is strained the water spoil disposal stage, and the water in the preceding lattice flows into the back lattice by the square hole 4 of dividing plate 2 bottoms, and last lattice 1-2 reaction tank utilizes desirable advection sedimentation principle to improve the water outlet effect.PCSBR pond water-out manners adopts water pump type to strain hydrophone, controls water pump type by liquid level and strains the hydrophone height, and the mud in the PCSBR pond drains into sludge thickener by sludge pump, adopts the aerobic sigestion technology to carry out mud decrement.Idle 1.5 hours at last, enter city planting ductwork after water outlet is carried out sterilizing in 0.5 hour through sterilization pool and get final product; The reaction tank 1 of present embodiment is the single reaction pond, with reference to Fig. 1, reaction tank 1 is rectangular, long-width ratio is 1.5～4, be divided into two lattice with dividing plate 2, be first lattice 1-1 and Mo Ge 1-2: first lattice 1-1 is the float filler reaction tank, the pond volume accounts for 30%～65% of total reaction pond 1 volume, the length and width ratio of first lattice is 1～1.5, filler is housed in the pond, and the diameter of filler is the ball-type material of 0.01～0.1m, and the density of filler is 0.95～0.99, headed by the shared volume of described filler 20%～40% of reaction grid pond 1-1 effective volume, filler is levitated state when static in reaction tank.Filler has good hydraulic characteristic, biological adhesiveness and stability as the microbial immobilization carrier.In step of reaction, in the first lattice attached to aerobic microbiological uniform mixing under the aeration effect in the aerobic microbiological on the outer microbial film of float filler and the active sludge, common in the sewage with BOD ₅Be that main organic pollution materials plays Degradation.Ammonifying bacteria in the while aerobic microbiological, nitrobacteria utilizes O ₂With the organic nitrogen compound decomposition and inversion is NO ₃ ^-PolyP bacteria utilizes O ₂Phosphorus in the sewage is enriched in the active sludge; The denitrifying bacterium that exists in the biomembranous deep layer anaerobic layer is with NO in the water ₃ ^-Be converted into N ₂Discharge reactive system.End lattice 1-2 is traditional sbr reactor pond, and the pond volume accounts for 35%～70% of total reaction pond 1 volume, and the length and width ratio of last lattice 1-2 is 1.5～3, is provided with mud-removing bucket 3 in the pond; With reference to Fig. 2, be connected by 2～8 rectangle square holes 4 between two lattice, square hole 4 is positioned at dividing plate 2 bottom positions, the height of square hole 4 is 20%～30% of reaction tank 1 an interior available depth, available depth is 4～6m, the width of square hole 4 be reaction tank 1 wide 10%～30%, be provided with graticule mesh 5 in the square hole 4.

Embodiment two: the difference of present embodiment and embodiment one is that the number of reaction tank 1 is two, with reference to Fig. 3, wherein the cycle of operation in single pond can be 2～12h, single pond cycle of operation of present embodiment is 8 hours, wherein, intakes 4 hours, carry out aeration in the time of water inlet, quiescent setting is 2 hours then, strains the water spoil disposal again, and straining water and spoil disposal time is 1.5 hours, idle at last 0.5 hour, several reaction tanks 1 in chronological order with the spatial order intermittent operation.

Embodiment three: the difference of present embodiment and embodiment two is, the number of reaction tank 1 is four, with reference to Fig. 4, wherein single pond cycle of operation is 6 hours, wherein, intake 4 hours, carry out aeration in the time of water inlet, quiescent setting is 0.5 hour then, strains the water spoil disposal again, straining water and spoil disposal time is 1 hour, idle 0.5 hour at last.Several reaction tanks 1 in chronological order with the spatial order intermittent operation.

The number of reaction tank 1 of the present invention can be 〉=any number of 2, and they are all within protection scope of the present invention.

Claims

1. the method for a float filler cellular art breading decentralized low-temperature sewage, it is underground to it is characterized in that a. imbeds reaction tank (1), and reaction tank (1) is gone up end distance face of land 0.5m; B. the process of controlling reaction tank (1) each cycle of operation is followed successively by: intake 6 hours, and carried out aeration in the time of water inlet, quiescent setting is 2 hours then, strains the water spoil disposal again, and straining water and spoil disposal time is 2.5 hours, and idle 1.5 hours at last, water outlet got final product.

2. the method for float filler cellular art breading decentralized low-temperature sewage according to claim 1, it is characterized in that described reaction tank (1) is rectangular, long-width ratio is 1.5～4, be divided into two lattice with dividing plate (2), be first lattice (1-1) and last lattice (1-2): first lattice (1-1) are the float filler reaction tank, the pond volume accounts for 30%～65% of total reaction pond (1) volume, and the length and width ratio of first lattice (1-1) is 1～1.5, and filler is housed in the pond; End lattice (1-2) are traditional sbr reactor pond, and the pond volume accounts for 35%～70% of total reaction pond (1) volume, and the length and width ratio of last lattice (1-2) is 1.5～3, is provided with mud-removing bucket (3) in the pond; Be connected by 2～8 rectangle square holes (4) between two lattice, square hole (4) is positioned at dividing plate (2) bottom position, the height of square hole (4) is 20%～30% of the interior available depth of reaction tank (1), available depth is 4～6m, the width of square hole (4) is 10%～30% of reaction tank (a 1) width, is provided with graticule mesh (5) in the square hole (4).

3. the method for float filler cellular art breading decentralized low-temperature sewage according to claim 1 and 2, the diameter that it is characterized in that described filler is the ball-type material of 0.01～0.1m, the density of filler is 0.95～0.99, headed by the shared volume of described filler 20%～40% of reaction grid pond (1-1) effective volume.