CN2898003Y

CN2898003Y - Landscape sewage ecological treating pool in residential estate

Info

Publication number: CN2898003Y
Application number: CNU2006200830728U
Authority: CN
Inventors: 张成禄; 李燕; 张建; 何淑仲
Original assignee: Shandong University
Current assignee: Shandong University
Priority date: 2006-04-14
Filing date: 2006-04-14
Publication date: 2007-05-09
Anticipated expiration: 2016-04-14

Abstract

The utility model relates to a sewage treatment ecological pool for landscape of residential area, the pool surface is elliptic or rectangular, 90 percent of the pool body is buried under the ground, the pool wall is made of anti-penetration reinforced concrete or is replaced by anti-penetration film, the interior of the pool body is provided with a water distribution layer, a penetration layer, a thin sand layer and a water layer from up to down, a hollowed-out flowerpot is arranged on the thin sand layer, the water distribution layer is composed of a diameter of 25 to 55mm gravel or scree and a diameter of 0.5 to 1.2mm river sand. annular water distribution tubes with perforations are buried in the interior of the water distribute layer, the penetration layer is made of the mixture of the soil and slag or truves, a gas distribution tube is arranged in the interior of the penetration layer, the thin sand layer is composed of a diameter of 0.2 to 0.5mm thin sands. The water layer provides the existent environment for aquatic plants. The utility model can change the anaerobic and aerobic environment alternately; the soil microbial degradation, interception filtering, absorption, sedimentation and purification of aquatic plants are utilized to realize the sewage treatment.

Description

Sub-district view sewage disposal ecological pool

(1) technical field

The utility model belongs to sewage treatment area, particularly a kind of sub-district view sewage disposal ecological pool.

(2) background technology

The sub-district, comprise service for life district of resident living sub-district on the ordinary meaning, park, tourist resort, motorway etc., these geographic water exhaust system are not usually within the city planting ductwork coverage of city, again owing to there is not sewage treatment facility, a large amount of unprocessed lakes, river that directly enter of sanitary sewage, severe contamination water body environment.

At present, for community wastewater, treatment process commonly used has: activated sludge process, biological contact oxidation process, BAF (BAF) etc.Though but the water outlet of these technologies can qualified discharge, can not satisfy the purpose of reuse.In addition, the Membrane Bioreactor for Wastewater Treatment technology also progressively is applied in community wastewater is handled, but also has the cost height of film own, the more high shortcoming of operating system complexity and running cost.And above-mentioned these treatment process are not considered the view problem of sewage treatment facility.

(3) summary of the invention

The utility model is for overcoming above-mentioned the deficiencies in the prior art, provide a kind of simple in structure, capital cost is low, convenient management, treatment effect are good, and the sub-district view sewage disposal ecological pool that sewage disposal and ecoscape can be combined as a whole.

The purpose of this utility model is achieved through the following technical solutions: a kind of sub-district view sewage disposal ecological pool, and the pond face of its pond body is ellipse or rectangle, pond body about 90% is embedded in underground.Pool wall adopts impervious concrete to be built into, or substitutes with anti seepage membrane, prevents to ooze polluted underground water under the sewage.Body top, pond is built into grouan, marble or white marble, sets out water pipe on pool wall below the stone, and rising pipe is positioned at underground.

Body inside, described pond is divided into water distribution layer, filter layer, fine sand layer and water layer from bottom to top, and the hollow out flowerpot is set on the fine sand layer.Water distribution layer is that the rubble of 25～50mm or cobble and particle diameter are that the river sand of 0.5～1.2mm is formed by diameter, plays the support filter layer and makes the equally distributed effect of sewage, and inside is buried the annular perforations water distributor underground, and at the front end of water distributor arm is set; Filter layer is formulated with soil blending slag or peat, is the main active layer of sewage purification, establishes the annular gas distribution pipe in the filter layer.Fine sand layer is that the fine sand of 0.2～0.5mm is formed by particle diameter, will endure water, swim and submerged plant such as floral leaf reed, cattail, lotus, water lily kind in the hollow out flowerpot; Water layer provides the control environment of existence for waterplant.

The utility model is owing to adopt above technical scheme, and during work, sewage at first enters annular water distributor, flows into metalling by the perforation on the water distributor, carries out the distribution again of sewage here, to reach the purpose of water distribution uniformity.Owing to the setting of gas distribution pipe, caused the aerobic and anaerobic environment of gas distribution pipe upper and lower.Sewage carries out anaerobic digestion in water distribution layer the time, and macromolecular organism is decomposed into micromolecular material, and pollutent is tentatively degraded.Then under the soil wicking action, sewage soaks into to upper layer of soil lentamente, soil particle is held back the suspended matter in the waste water, because the gas distribution pipe oxygen supply is abundant, the very fast breeding of microorganism is got up, the material of suspended matter, colloid and dissolved state in the further again planar water of these microorganisms forms microbial film gradually, and the organism in the waste water is mainly decomposed by the microorganism aerobic on the microbial film.Soil can also be held back filtration, absorbs absorption, precipitate some pollutents simultaneously, has further reduced Pollutant levels.When sewage is upwards flowed through fine sand layer, filter through fine sand, the excess sludge that the filter layer that dams is taken out of, but waterplant absorption portion nitrogen, phosphorus such as floral leaf reed, cattail carry out advanced treatment as nutritive substance to sewage in this one deck, have improved effluent quality.Simultaneously plant degradable excess sludge also makes fine sand layer be difficult for stopping up.The water surface rises gradually, and last treated water flows out the pond body through rising pipe.

During actual motion, gas distribution pipe and water distributor are used alternatingly, to change aerobic, the anaerobic environment in the water distribution layer, the microorganism that grows under aerobic condition can be decomposed the microbial film of anaerobic condition growth, make water distribution layer be difficult for stopping up, the variation of environment simultaneously also can be turned out the new microorganism that is fit to this environmental change.

When system is carried out back flushing, water inlet pipe is closed, backwashing water flows into annular water distributor from arm, and then each layer carried out backwash.

The utility model is handled community life sewage, under the hydraulic load less than 20cm/d, all can reach more than 91.2% the clearance of ammonia nitrogen, COD, total phosphorus, and nitrogen removal rate is reached 63.8%.

The utility model has following advantage:

(1) treatment process is simple and practical, stable performance, and effluent quality is good.

(2) initial cost is low, convenient management.

(3) system adopts the form of underground type, makes full use of the underground space, saves land used.

(4) water outlet can be back to greening, spray road, carwash or additional landscape water after sterilization, realizes the sewage recycling utilization, has certain economic benefits.

(5) the utility model is combined as a whole sewage disposal with beautifying the environment, and has both handled sewage, can form good sub-district ecoscape, environmental benefit and obvious social benefit again.

(4) description of drawings

Accompanying drawing is the utility model structural representation

1 pond body among the figure, 2 stones, 3 gas distribution pipes, 4 water distributors, 5 rising pipes, 6 water distribution layer, 7 filter layers, 8 fine sand layers, 9 water layers, 10 hollow out flowerpots, 11 arms.

(5) embodiment

Below in conjunction with drawings and Examples the utility model is further specified.

Embodiment: a kind of sub-district view sewage disposal ecological pool, the pond face of its pond body 1 is ellipse or rectangle, pond body 1 about 90% is embedded in underground.Pool wall adopts impervious concrete to be built into, or substitutes with anti seepage membrane.Body 1 top in pond is built into grouan, marble or white marble stone 2, sets out water pipe 5 on pool wall below the stone 2, and rising pipe 5 is positioned at underground.

Body 1 inside, described pond is divided into water distribution layer 6, filter layer 7, fine sand layer 8 and water layer 9 from bottom to top, and hollow out flowerpot 10 is set on the fine sand layer.Water distribution layer 6 is that the rubble of 25～50mm or cobble and particle diameter are that the river sand of 0.5～1.2mm is formed by diameter, plays support filter layer 7 and makes the equally distributed effect of sewage, and inside is buried annular perforations water distributor 4 underground, and at the front end of water distributor 4 arm 11 is set; Filter layer 7 usefulness soil blending slag or peat are formulated, are the main active layers of sewage purification, establish annular gas distribution pipe 3 in the filter layer 7.Fine sand layer 8 is that the fine sand of 0.2～0.5mm is formed by particle diameter, will endure water, swim and submerged plant such as floral leaf reed, cattail, lotus, water lily kind in 10 li in hollow out flowerpot; Water layer 9 provides the control environment of existence for waterplant.

Claims

1. sub-district view sewage disposal ecological pool, it is characterized in that: body inside, pond is divided into water distribution layer, filter layer, fine sand layer and water layer from bottom to top, the hollow out flowerpot is set on the fine sand layer, water distribution layer is that the rubble of 25～50mm or cobble and particle diameter are that the river sand of 0.5～1.2mm is formed by diameter, inside is buried the annular perforations water distributor underground, and at the front end of water distributor arm is set; Filter layer is formulated with soil blending slag or peat, in establish the annular gas distribution pipe; Fine sand layer is that the fine sand of 0.2～0.5mm is formed by particle diameter.

2. view sewage disposal ecological pool in sub-district according to claim 1, it is characterized in that: gas distribution pipe and water distributor are used alternatingly; Backwashing water flows into the pond body by the arm that the water distributor front end is provided with.