CN101205108A

CN101205108A - Highly effective composite hydrolytic acidation cell having both sewage treatment and sludge reduction functions

Info

Publication number: CN101205108A
Application number: CNA2007101302206A
Authority: CN
Inventors: 王鹤立; 程丽
Original assignee: China University of Geosciences Beijing
Current assignee: China University of Geosciences Beijing
Priority date: 2007-07-16
Filing date: 2007-07-16
Publication date: 2008-06-25
Anticipated expiration: 2027-07-16
Also published as: CN101205108B

Abstract

The invention provides an efficient composite hydrolysis acidification pool having both waste water treatment and sludge reduction function, which belongs to an environmental protection device technology field and relates to improvement of the process and device for waste water treatment.Large energy consumption and high operation cost have handicapped the construction and operation of sewage plants in our country for a long time.The sludge is a byproduct of waste water treatment. The sludge disposal charge takes one third of the operation cost in the sewage plant, and the solid waste secondary pollutant is caused at the same time.In order to solve the problem, the invention provides an efficient hydrolysis acidification technique for the sludge reducing and the synchronous processing of waste water and solid pollutants. Due to the invention, a primary sedimentation pond is replaced, interception efficiency of suspended substance is strengthened, returning excess sludge is hydrolysis liquefied; meanwhile, the reduction processing of solid waste and sludge is achieved.The invention also increases turbulent flow and mass transfer by the arrangement of folding and wing panel in the pool to strengthen the removal rate of hydrolysis acidification pool on dissolved organic pollutants.

Description

Have the high-efficiency composite hydrolysis acidification pool of sewage disposal and sludge reduction functions concurrently

Technical field

Patent of the present invention belongs to the environmental protection equipment technical field, relates to a kind of improvement of sewage treatment process equipment.

Background technology

Sewage disposal is the complex art of energy intensive.For a long time, big, high construction and the operation that hinders China municipal sewage plant to a certain extent of working cost of energy consumption.Investigation shows that China's municipal sewage plant's energy consumption is mainly used in biological treatment oxygen supply and sludge handling process, accounts for more than 60% of Sewage Plant direct operating cost.

Mud is the by product of sewage disposal, calculate with water ratio 97%, volume account for dispose of sewage 0.3～0.5%, the advanced treatment sludge output also will further increase.The dewatered sludge of the annual discharging of China at present is approximately 1.3 * 106t, and is increasing with the speed above 10%.The sewage work of Beijing's maximum---Gaobeidian City's sludge of sewage treatment plant is disposed expense and is accounted for more than 1/3 of full factory working cost.A large amount of generations of mud have also caused increasingly serious secondary pollution, and become another bottleneck of municipal sewage treatment industry.Sludge treatment disposal rate is low, and a wherein very important reason is exactly the restriction of investment and running cost aspect.Therefore, mud decrement and resource utilization receive very big concern always, and the less sewage treatment process of research and development sludge yield also is one of important channel that addresses this problem.

In addition, equally also there is " three wastes " problem in sewage work as industrial enterprise, and " cleaner production " of himself enough paid attention to for a long time.Wherein " waste residue " sewage plant sludge of having mentioned promptly according to the principle of " cleaner production ", should be controlled from the source the disposal of mud.The mud decrement technology can be when reducing mud, do not influence the efficient of entire sewage treatment process, though still be in the development research stage now,, certainly will draw attention along with popularizing and the exposure of the existing drawback of mud now of small and medium-sized cities sewage work.

Summary of the invention

In order to address the above problem, patent of the present invention provides a kind of high-efficiency composite hydrolysis acidification pool technology that has sewage disposal and sludge reduction functions concurrently.Promptly before the technology of the aeration tank of sewage aerobic biochemical treatment, adopt this effectively hydrolyzing acidification technique to replace primary sedimentation pond, and by its water side efficient three-phase separation area is set and further strengthens suspended substance and hold back efficient; Simultaneously the second pond excess sludge partly or entirely is back to this effectively hydrolyzing acidification pool, separates liquefaction, realize the decrement treatment of solid-phase contaminants and mud at pool inner water.In addition, patented technology of the present invention increases the current turbulence and improves thing phase mass transfer, with the clearance of enhanced hydrolysis acidification pool to the solvability organic pollutant also by water conservancy diversion and flow-disturbing members such as flap, fin are set in the pond, and can be used as pre-treatment, improve the efficient of subsequent biological treatment technology.

Description of drawings:

Fig. 1, Fig. 2, Fig. 3 are the principle of work synoptic diagram;

Among the figure: (1) is that sewage inlet pipe, (2) are that batch pipe, (3) of backflow excess sludge is that water conservancy diversion flap, (4) are that Turbulent wing panel, (5) are that perforation tracery wall, (6) are that efficient sloping plate deposition equipment, (7) are that water leg, (8) are that rising pipe, (9) are that storage bucket, (10) are shore pipes.

Embodiment

Workflow and principle are: sewage enters hydrolysis acidification pool through sewage inlet pipe (1), flow-disturbing through water conservancy diversion flap (3) Turbulent wing panel (4), increase the current turbulence and improve thing phase mass transfer, organic pollutant is separated under the acidification bacteria effect at pool inner water efficiently to be removed, enter efficient three-phase separation area through perforation tracery wall (5) again, current obtain clarification by efficient sloping plate deposition equipment (6), catchment through water leg (7), are discharged by rising pipe (8) at last; Solid-phase contaminants in the current and anaerobic bacterium after efficient sloping plate deposition equipment precipitate and separate or sedimentation on the way, are accumulated in storage bucket (9), can be discharged or backflow by shore pipe (10); The excess sludge of follow-up aerobe processing unit, can enter hydrolysis acidification pool by the backflow excess sludge pipe (2) of batching, in the unitary lower section of the every lattice of hydrolysis acidification pool, with sewage current hybrid perturbation, by obtaining liquefaction and degraded under the acidication bacteriological action in the acidication, reach the usefulness of mud decrement.

The water conservancy diversion flap can be divided into setback plate, different setback plate in the pond, also can will adopt different form combinations with setback plate and different setback plate; The unitary length L of every width of cloth flap ₁Be 200～2000mm, angle α is 90 °～150 ° between adjacent two width of cloth flaps; The Turbulent wing panel length L ₂Be 1～200mm, the angle β between fin and the flap is 30 °～150 °; Adopt the water side to adopt efficient sloping plate deposition equipment that solid-phase contaminants is carried out high efficiency separation and held back, efficient swash plate adopts engineering plastics or glass reinforced plastic, and its swash plate spacing is 20～200mm.

Claims

1. high-efficiency composite hydrolysis acidification pool technology that has sewage disposal and sludge reduction functions concurrently comprises: 1. sewage inlet pipe, 2. batch pipe, 3. water conservancy diversion flap, 4. Turbulent wing panel, 5. perforation tracery wall, 6. efficient sloping plate deposition equipment, 7. water leg, 8. rising pipe, 9. storage bucket, 10. shore pipe of backflow excess sludge.It is characterized in that: have simultaneously in hydrolysis acidification pool that the backflow excess sludge is batched, water conservancy diversion flap and Turbulent wing panel strengthen function facilities such as reaction mass transfer, efficient sloping plate deposition, thereby can in same hydrolysis acidification pool, realize anerobic sowage biological degradation, solid-phase contaminants high efficiency separation and hold back, function such as mud is subdued.

2. according to claim 1 described a kind of high-efficiency composite hydrolysis acidification pool technology that has sewage disposal and sludge reduction functions concurrently, it is characterized in that: the water conservancy diversion flap can be divided into setback plate, different setback plate, also can will adopt different form combinations with setback plate and different setback plate; The unitary length L of every width of cloth flap ₁Be 200～2000mm, angle α is 90 °～150 ° between adjacent two width of cloth flaps.

3. according to claim 1 described a kind of high-efficiency composite hydrolysis acidification pool technology that has sewage disposal and sludge reduction functions concurrently, it is characterized in that: the Turbulent wing panel length L ₂Be 1～200mm, the angle β between fin and the flap is 30 °～150 °.

4. according to claim 1 described a kind of high-efficiency composite hydrolysis acidification pool technology that has sewage disposal and sludge reduction functions concurrently, it is characterized in that: adopt the water side to adopt efficient sloping plate deposition equipment that solid-phase contaminants is carried out high efficiency separation and held back, efficient swash plate adopts engineering plastics or glass reinforced plastic, and its swash plate spacing is 20～200mm.