Sedimentation basin
Technical field
The utility model relates to environment-protective water process field, is specifically related to a kind of sedimentation basin.
Background technology
China is about 6.74 hundred million people in the countryside at present, and more than 250 ten thousand natural villages, every day, more than 3,000 ten thousand tons of quantity of wastewater effluent, accounted for national Sewage Water Emissions amount more than 50%.From 2006 to 2013, National urban wastewater treatment rate rose to 99.1% from 55.7%, at present close to saturation state; County town wastewater treatment rate rises to 82.6% from 13.6%, and wastewater treatment rate obviously promotes.And village wastewater treatment rate is only 7.0% at present, only the rural domestic sewage treatment ratio of minority developed provinces and cities as Beijing, Tianjin, Shanghai, Jiangsu, Zhejiang, Guangdong etc. can reach about 10%; Shanghai reaches 43%, for the whole nation is the highest; Other most of provinces are also not fully under way, just carried out pilot in part villages and small towns.
" water prevention and cure of pollution action plan " (" ten, water ") is put into effect.According to measuring and calculating, the investment demand that " ten, water " measures is implemented completely will reach 2 trillion yuan.Investment will relate to newly-built sewage treatment facility, mark transformation, pipeline network construction and villages and small towns sewage disposal four bulk are put forward by existing sewage treatment plant, and this is also the major fields of Present Domestic sewage disposal.Villages and small towns market of sewage treatment will welcome " large opportunity+challenge greatly ".Predict that China's country sewage discharge capacity in 2015 is about 14,800,000,000 tons.Suppose to reach 20% calculating with handling rate, then rural sewage treatment potential market scale in 2015 can reach 40,800,000,000 yuan (do not comprise facility build up after operation market scale).Villages and small towns market of sewage treatment has a high potential.
Conventional active sludge treatment process shortcoming: floor space is large, operation is complicated, invests high, and energy consumption is large, and sludge yield is higher, and effluent quality is poor, and nitrogen, tp removal rate are low.
The technique capital costs such as artificial swamp, stabilization pond, land treatment system are low, run in energy consumption low, management is simple, while protection of the environment, improve regional area view, be adapted to new countryside construction.But there is effluent quality instability, treatment effect large, the shortcoming such as dwell time of sewage is long and floor space is large affected by environment, be only applicable to weather suitable, there is a large amount of low-lying lands and the rural area of vacant land.
According to the feature of villages and small towns sewage and country to the requirement of new village of promoting a conservation culture, the technique of suitable China villages and small towns sewage disposal should possess stronger anti impulsion load ability, and removal efficiency is high; Simple process is flexible, stable, maintenance management convenient; Capital expenditure is economized, operating cost is low, save energy and reduce the cost obviously; Present stage process emission request up to standard can be adapted to preferably and consider to carry out the features such as the change of regeneration needs with following.For the treatment process of country sewage dispersion treatment project recommendation in " rural domestic sewage treatment project construction and guide to investment " that national environmental protection portion issues in November, 2013: small-scale artificial wetland, land treatment systems, stabilization pond, purifying biogas generating pit, integrated sewage treating apparatus.
The main Problems existing of wastewater treatment in China has: pipe network is supporting to relatively lag behind, heavy water light mud phenomenon is general, upgrading is very urgent, reuse of wastewater degree is low, the management of the construction operation of sewage treatment plant still needs to strengthen and sewage treatment works is not also carried out on a large scale.
Along with China's population increases sharply, water requirement sharply increases progressively.Developing to middle-size and small-size distributing from centralized on a large scale for adapting to China's national situation sewage disposal scale, forming the situation of " based on large-scale, middle-size and small-size complementation ".The application and development of these integrated water treatment facilities provides new opportunity.
Utility model content
In view of this, the purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of sedimentation basin that both can be used alone the use that also can configure with other sewage-treatment plant independent assortments.
For realizing above object, the utility model adopts following technical scheme: a kind of sedimentation basin, comprise sedimentation basin body and sludge pump, the pool wall of described sedimentation basin body is respectively equipped with water inlet and delivery port, described sedimentation basin top section is clear water zone, underclad portion is buffer-precipitation district, is provided with some swash plates be vertically arranged in parallel between described clear water zone and described buffer-precipitation district; Described sludge pump is arranged in described buffer-precipitation district, and described sludge pump is communicated with sludge pipe, and the mud that described buffer-precipitation district is precipitated by sludge pipe by described sludge pump is discharged.
Described sedimentation basin also comprises inlet channel, and described inlet channel is arranged in described sedimentation basin body, and its one end is communicated with described water inlet, and the other end extends downward below swash plate.
Described buffer-precipitation district cross section is V-shaped, and described sludge pump is arranged on bottom V-arrangement buffer-precipitation district.
On the pool wall of the described clear water zone part that described delivery port is arranged, this delivery port is adjustable for height water outlet crest of weir.
Described sedimentation basin cross section is circular or oval.
Described sedimentation basin body adopts resistance to acids and bases material to make.
Described resistance to acids and bases material is glass fibre or polypropylene.
Described sedimentation basin bodies top is provided with observation panel.
Described sedimentation basin body is embedded in underground.
Described sedimentation basin is also supporting is provided with anaerobic biological treatment apparatus and aerobic biological treatment device, and by described sludge pump by the mud pumpback in buffer-precipitation district extremely described anaerobic biological treatment apparatus and/or Aerobic biological process device.
The utility model adopts above technical scheme, and this sedimentation basin top section is clear water zone, and underclad portion is buffer-precipitation district, by being provided with some swash plates be vertically arranged in parallel between described clear water zone and described buffer-precipitation district; Be arranged on by sludge pump in buffer-precipitation district, the mud that buffer-precipitation district is precipitated by sludge pipe by this sludge pump is discharged simultaneously.The sedimentation basin good airproof performance that the utility model provides, adaptable to various ground situation; Acid and alkali-resistance, resistance to oxidation; High/low temperature without distortion, long service life.
The utility model also tool has the following advantages:
1), this sedimentation basin volume is little, save and take up an area space, carrying flexibly, save construction cost, when equipment runs, noise is little, can adopt buried layout, seldom take surface area, can afforest or Planting Crops after equipment earthing, not affect the utilization again of land resource, reach the effect of equipment and the perfect adaptation of people around's habitat environment;
2), this sedimentation basin profile adopt cylinder design, resistance to compression, resistance to deformation is effective; Cross section Design is the fluidised form that ellipse can improve sewage greatly, reduces the short stream in sewage disposal process and dead angle area, effectively improves the clean-up effect of sewage.
3), this sedimentation basin adopts industrialization modularized production mode, realizes mass, scale, standardized production.The device fabrication cycle is short, can effective control for product quality.It is short that device context installation can realize the standardized work cycle, can come into operation very soon; Early stage, one-time investment was few, and operation cost is low.
4), establish swash plate in this sedimentation basin, greatly reduce the activated sludge sedimentation time, improve deposition efficiency.
5), this sedimentation basin effluent weir adopts the circular ostium excurrens in triangular-notch weir and bottom to combine mode, and the clear water clarity of discharge is high, water outlet is uniform and stable, and there is not mud race mud phenomenon.
Accompanying drawing explanation
Fig. 1 is the utility model sedimentation basin structural representation;
Fig. 2 is the effluent weir mouth structure schematic diagram of the utility model sedimentation basin.
In figure: 1, water inlet; 2, returned sludge pipeline; 3, swash plate; 4, sludge pump; 5, delivery port; 6, the outer discharge pipe of mud; 7, clear water zone; 8, buffer-precipitation district; 9, mud district; 10, triangular-notch weir; 11, water outlet weir plate; 12, apopore; 13, inlet channel, 14, observation panel.
Detailed description of the invention
As shown in Figure 1, the utility model provides a kind of sedimentation basin, comprise sedimentation basin body and sludge pump 4, the pool wall of described sedimentation basin body is respectively equipped with water inlet 1 and delivery port 5, described sedimentation basin top section is clear water zone 7, underclad portion is buffer-precipitation district 8, and floor portions is mud district 9, is provided with some swash plates 3 be vertically arranged in parallel between described clear water zone 7 and described buffer-precipitation district 8; Described sludge pump 4 is arranged in described buffer-precipitation district 8, and described sludge pump 4 is communicated with sludge pipe, and the mud that described buffer-precipitation district is precipitated by sludge pipe by described sludge pump 4 is discharged.
Described sludge pump 4 it should be noted that the buffer-precipitation district 8 described in the utility model comprises described mud district 9, so also can be arranged in the mud district 9 of bottom.
It should be noted that described sludge pipe branches into returned sludge pipeline 2 and the outer discharge pipe 6 of mud, by the mud directly outer row of the outer discharge pipe 6 of described mud, in the Aerobic biological process device (not shown) arranged to matching by the mud pumpback of described returned sludge pipeline 2.
The sedimentation basin that the present embodiment provides also comprises framework (not shown), and described framework is fixed on sedimentation basin inside, for installing the swash plate 4 be vertically arranged in parallel.
Described sedimentation basin also comprises inlet channel 13, and described inlet channel 13 is arranged in described sedimentation basin body, and its one end is communicated with described water inlet 1, and the other end extends downward below swash plate 3.
In the present embodiment, efficient sedimentation tank has coagulation-flocculation-precipitation integral function, and bio-chemical effluent gravity flow enters efficient sedimentation tank via central tube, and central tube water inlet flow velocity is not more than 30mm/s.
Described buffer-precipitation district cross section is V-shaped, and described sludge pump 4 is arranged on bottom V-arrangement buffer-precipitation district.Described sedimentation basin cross section is circular or oval.
On the pool wall of described clear water zone 7 part that described delivery port 5 is arranged, this delivery port 5 is adjustable for height water outlet crest of weir.The clear liquid of described clear water zone enters MBR membrane biological reaction pond by leg-of-mutton water outlet crest of weir and carries out advanced treating.
The Novel state Waste Water Treatment that MBR (Membrane Bio-Reactor) is membrane separation technique and biologic treating technique combination.
As described in Figure 2, this adjustable for height water outlet crest of weir comprises triangular-notch weir 10, water outlet weir plate 11 and apopore 12;
The body of sedimentation basin described in the present embodiment adopts resistance to acids and bases material to make.Described resistance to acids and bases material is glass fibre or polypropylene.Observation panel 14 is provided with in described sedimentation basin bodies top.Described sedimentation basin body is embedded in underground.
Described sedimentation basin is also supporting is provided with anaerobic biological treatment apparatus and aerobic biological treatment device, and by described sludge pump 4 by the mud pumpback in buffer-precipitation district extremely described anaerobic biological treatment apparatus and/or Aerobic biological process device.It should be noted that the sewage after the process of described Aerobic biological process device through described delivery port 5 from flowing in described sedimentation basin.To maintain microorganism concn in reactor, the object of dephosphorization denitrification can be reached simultaneously.Residual active sludge can compost treatment, or recycles as bacterial classification.Sedimentation basin clarification and effluent water quality is lasting, stable reaches national town sewage discharge standard.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the application or akin technical scheme, all drops within protection domain of the present utility model.