CN103469882B - Inspection well for automatically supplementing oxygen to downstream sewage pipeline by water flow - Google Patents

Abstract

The invention discloses an inspection well for automatically supplementing oxygen to a downstream sewage pipeline by water flow. The inspection well comprises an inspection well body, an upstream branch sewage pipeline is arranged on one side of the inner wall of the inspection well body, a main sewage pipeline is arranged at the bottom of the inspection well body, water in the upstream branch sewage pipeline flows downwards into the main sewage pipeline, and a water-raising waterwheel is mounted at the bottom of the inspection well body, positioned on the water surface of the main sewage pipeline and fixed onto walls on two sides of the inspection well body by fixing supports. The inspection well is simple in structure and convenient to mount, detach and maintain. The used water-raising waterwheel has a certain buoyancy, the submerged depth of the water-raising waterwheel in the inspection well body can be properly adjusted according to the water levels of the pipelines, the water-raising waterwheel is prevented from stopping rotation due to excessively low water levels, rotation energy of the water-raising waterwheel comes from the flow speed of the water in the pipelines, external power and a complete energy supply device are omitted, and the inspection well is convenient to construct.

Description

Rely on water body flow to the manhole of the automatic oxygenating of downstream sewage conduct

Technical field

The present invention relates to automatic oxygenating technology in urban sewage pipe sewage, be specifically related to a kind of water body flow that relies on to the manhole of the automatic oxygenating of downstream sewage conduct, the waterwheel that pumps up water independently rotated by dependence flow power built-in in manhole, the sewage flowing through main sewer road in manhole is constantly made to carry out oxygenation, riser tubing dissolved oxygen levels, strengthen the degrading activity of the aerobic microbiological in sewage, make in the flowing of sewage in pipeline constantly by microbial consumption organic pollution, reach and reduce pollutant index, the effect of purifying waste water.

Background technology

The Water drainage system design mechanism in current China city is comparatively complicated, especially the old town in city, because design year is for Problems existing, mostly have employed the confluence of rainwater and sewage even not treated design mechanism also directly entering urban sewage system of industrial wastewater, although the advantage that this mode has expense low on building, the harm of its interflow discharge is more and more obvious; And rainwater lower for degree of contamination is adopted the discharge mode of confluence of rainwater and sewage, for the water resource be becoming tight current day, this is also a kind of waste, is not suitable for the long-run development in city; And the old industrial area in some cities may occur that, because supervision is not tight, production waste is directly entered urban duct by some producers.May there is variety of problems in above urban sewage pipe, adopt the discharge mode of combined system: the total amount of disposing of sewage for a moment increasing Wastewater Treatment Plant; Second make the sewage pollution characteristic entering Sewage Plant become more complicated, promote its intractability, add the operating load of Sewage Plant.

Therefore, the design of current Novel urban drainage pipeline networks, must be allowed for access after its certain process in inside reaches the standard of discharging to the urban sewage pipe sewage network in city of the segregation system discharge i.e. discharge of industrial wastewater that adopts collaborates finally to enter Wastewater Treatment Plant and processes again with sanitary sewage; Rainwater then adopts separately a set of drainage pipeline networks rainwater can be entered urban landscape river rainwater is fully used.

The composition of current drainage system comprises sewage network, municipal wastewater pipe network, the Wastewater Treatment Plant three part composition of resident residential community.First Domestic sewage collecting is imported city planting ductwork by community pipe network, relies on transferring of city planting ductwork to enter Wastewater Treatment Plant, enters natural water after harmless treatment.

Pollutant component in municipal wastewater comes from the daily life sewage of resident mostly, sanitary sewage refers to the water used in people's daily life, comprise from lavatory, water that bathroom, lavatory etc. are discharged, the pollutant component of this kind of sewage is organic matter mostly, if protein, andvegetable fats, carbohydrate, urea and ammonia nitrogen etc. are also containing soap and synthetic detergent etc., sanitary sewage all needs just can discharge through Sewage Plant process to enter natural water.

Current municipal wastewater arrives Wastewater Treatment Plant from resident family and adopts Cemented filling, the construction of Sewage Plant is general all near river, the timely discharge being beneficial to its process water ensures the normal operation of Wastewater Treatment Plant, therefore municipal wastewater need through growing distance, carrying for a long time from arrival Wastewater Treatment Plant of resident family, in this flow process, there is sufficient nutriment to absorb for microbial digestion in municipal wastewater, be beneficial to the propagation of self.

For the sewage conduct in city old city, due to long neglected and in disrepair, the depositional phenomenon of larger particles will certainly be there is in duct bottom in sewage through conveying year in year out, and along with the increase of bed mud deposition, dissolubility oxygen in bed mud can reduce gradually, long to causing the environment occurring anoxic in the bed mud in duct bottom under dissolved oxygen depletion, anoxia condition then only can be beneficial to the growth and breeding of anaerobe, and suppresses the vital movement of aerobic quasi-microorganism.

Anaerobe carries out anaerobic digestion to organic matter in anaerobic environment, can produce the stench such as hydrogen sulfide, methane and incendive gas.This kind of gas can not get certain dilution because ducted oxygen is not enough, if the accident that long-term accumulation then may meet accident.In such as on June 23rd, 2012, in Jinan City, Shandong Province one place sewage conduct maintenance desilting process, constructor falls in a swoon suddenly because anoxic is poisoning when lower well operations, and aboveground personnel also fall in a swoon because of anoxic in succession going into the well in the process of suing and labouring.Constructor caused 3 people all rescue measures proved ineffectual dead because anoxic is poisoning when maintenance of underground breaks sewage conduct in Yangzhou development zone, Jiangsu Province on August 12nd, 2010.Above two routine accidents, all because accumulating a large amount of methane class toxic and harmful in sewage conduct, causing oxygen content in the sewage conduct of down-hole not enough, in the unwitting situation of operating personnel, causing anoxic poisoning symptom.And when methane concentration reaches finite concentration, when meeting naked light, danger that even can be explosion caused, causes serious people's property loss.

The conveying of sewage all needs the Flows through long distance, and in the course of conveying of long distance, current pipeline only plays a part to transfer sewage, is not made full use of the inner space of pipeline.Pipeline is only transfer but be a good reaction vessel for each quasi-microorganism in sewage for sewage, such as not only there is anaerobic environment but also have abundant nutriment as source of nutrition in the duct, therefore the decomposition active of anaerobe just very active meeting can discharge poisonous class gas with this understanding; And the aerobic microbiological be present in equally in sewage is owing to lacking sufficient dissolved oxygen source, cause the vital movement of aerobic microbiological to be suppressed, conventional innoxious decomposition cannot be carried out to the organic matter in water.

Therefore for promoting the decompose themselves ability of aerobic microbiological, then must to increase in sewage premised on oxygen content.Dissolved oxygen concentration is only had to reach the requirement of microorganism normal activities, just can give full play to the ability of its decomposing organic matter, to promote that it is to decomposition organic in sewage, and microorganism directly will promote the decline of the organic matter processing load amount of Sewage Plant to organic decomposition in pipeline, improve the disposal ability of Sewage Plant, reduce the cost of production of Sewage Plant.

Dissolved oxygen for how in lifting sewage, the oxygen content in current sewage conduct roughly has following source:

1, in the junction in main sewer road; often have in the branch sewer access main pipeline of side; the exit position of branch sewer generally all can higher than main pipeline, and when sewage flows into main pipeline from arm, current can form the fierce ponding drop at this moment impacting manhole of drop and can bring a large amount of extraneous air into like this.

2, the non-flowing full conveying of the many employings of pipeline of sewage is carried, thus more than water level can leave this part space of segment space in the duct and can accumulate the air that the external world enters, the dissolubility that air self has in the flow process of water body slowly can be dissolved in sewage and sewage oxygen content is increased.

3, current can produce vortex phenomenon at manhole when being entered downstream by upstream, and these whirlpools can produce interlaced flow phenomenon in various degree, stir air-flow and enter water body, oxygenous dissolving.

4, in city, pipeline junction everywhere often has to make upstream line access downstream line smoothly and arranges drop well, and fail to be convened for lack of a quorum because the drop of height produces the phenomenon that drops rapidly at drop well place upper water, water velocity strengthens instantaneously.In its accelerator, current contact with air and directly make current carry large quantity of air secretly to enter downstream line.

But all there is certain defect in above-mentioned four kinds of oxygenation modes:

1) air that the impact force that the oxygenation Method compare of the 1st class is confined to arm current is formed is brought in, and when current are less, the more weak air dissolves that can drive of its impact force is more limited.

2) the 2nd class oxygenation mode relies on the ducted air of non-flowing full to dissolve gradually to increase oxygen content, even if but for the non-flowing full of pipeline current municipal pipeline but the oxygen content of its inside is seldom little to sewage oxidation effect, as the personnel occurred normal in the maintenance of current municipal pipeline enter after in manhole, gassing phenomenon occurs, its reason is exactly because inner oxygen content is very few and lodge in ducted factor because the decomposition active of the anaerobe in sewage generates the toxic gases such as hydrogen sulfide.

3) the oxygenation mode of the 3rd class and the 4th class relies on the draught effect of manhole by drop or air to be brought into and made sewage obtain oxygenation by whirlpool, but the manhole proportion that this mode can produce drop or vortex phenomenon in the overall pipe network in city is not too many, and therefore its oxidation effect neither be obvious especially.

Defect above existing for a few class oxygenation measure and the restriction of suffered pipeline, therefore, be badly in need of in actual environment a class convenient, reliable and efficiently oxygenating technical measures to promote supplementing of its dissolved oxygen.

Summary of the invention

Aerobic microbiological is caused to can not get good growth in the duct for current municipal wastewater pipeline is inner in course of conveying containing hypoxgia, and pipeline only serves the effect of transport sewage, waste the problem can carrying out the effect of sewerage treatment therein, the object of the invention is to, there is provided a kind of water body flow that relies on to the manhole of the automatic oxygenating of downstream sewage conduct, waterpower agitating device is installed in this manhole, being used for stirring current enters in downstream line to drive outside air to supplement rapidly, thus the vigor of aerobic microbiological in raising downstream line, make it can carry out decomposition to dirty organic pollutants to absorb, obtain the effect reducing water pollutant content, and make the processing load reduction of Wastewater Treatment Plant to help the processing cost reducing Wastewater Treatment Plant.

In order to realize above-mentioned task, the present invention takes following technical solution:

A kind of water body flow that relies on is to the manhole of the automatic oxygenating of downstream sewage conduct, comprise manhole, upstream branch sewer is had in the side of manhole inwall, the bottom of manhole is main sewer road, flow into main sewer road under the current direction of upstream branch sewer, it is characterized in that, bottom manhole, the waterwheel that pumps up water is installed, this waterwheel that pumps up water is positioned on the water surface in main sewer road, and is fixed on by fixed support on the borehole wall of manhole both sides.

Dependence water body flow of the present invention is to the manhole of the automatic oxygenating of downstream sewage conduct, and structure is simple, easy for installation, is convenient to carry out detachable maintaining.The waterwheel that pumps up water used possesses the depth of immersion that certain buoyancy suitably can adjust in manhole with the height of pipeline middle water level, prevent water level too low and the waterwheel that causes pumping up water stops operating, and the rotational energy of the waterwheel that pumps up water is originated as ducted water velocity does not need outside to provide power to save the energy supply device of complete set, convenient construction.Its advantage is:

1, rely on the rotary action of waterwheel of pumping up water to serve the oxidation effect good to sewage, make sewage oxygen content obviously increase and positive role is served to the growth and breeding of aerobic quasi-microorganism.

2, owing to improving into the oxygen content in factory's sewage after sewage oxygenation, can the aeration rate of favourable minimizing in the aeration in sewage treatment process of Sewage Plant, reduction Sewage Plant energy consumption is very helpful.

3, in pipeline, the increase of oxygen content is to the pernicious gas accumulated in pipeline such as: the gases such as methane, hydrogen sulfide, carbon monoxide have certain diluting effect, in order to avoid these pernicious gas over-burdens produce, negative effect is as usual has some pipe-line maintenances workman to occur intoxicating phenomenon to during pipeline maintenance because ducted harmful gas concentration is too high.

Accompanying drawing explanation

Fig. 1 dependence of the present invention water body flow is to the manhole longitudinal plan of the automatic oxygenating of downstream sewage conduct.

Fig. 2 pumps up water the service diagram of waterwheel.

Water tray detail drawing on Fig. 3 waterwheel rotating disk.

Fig. 4 pumps up water the plan-position figure of waterwheel in manhole.

Label in figure represents respectively: 1, mark time, 2, pump up water waterwheel, 3, fixed support, 4, water tray, 5, reinforcing bar annulus, 6, the soft bottom land that makes of elastomeric material, 7, floral disc, 8, upstream branch sewer, 9, main sewer road, 10, manhole.

Below in conjunction with Figure of description, structure of the present invention and operating principle are described further.

Detailed description of the invention

The mentality of designing of applicant is, manhole is relied on to have good air permeability with extraneous, a current agitating device can be placed at manhole place, the principle of this device is according to the 1st of oxygen content in above-mentioned sewage conduct of the prior art, 2, 4 sources, a current mixing plant (namely pump up water waterwheel) is placed in manhole, upstream current are relied on to be energy source to its impact force, ducted sewage is raised out the water surface, rely on the low-priced spray opened to make it skyborne oxygen and be dissolved in sewage, and the waterwheel that pumps up water has certain perturbation action at manhole place to current makes current be in not plateau, increase the touch opportunity of itself and air.

The waterwheel that pumps up water relies on the waterwheel support on wall to be fixed in manhole, the waterwheel height that pumps up water is determined according to the vertical distance between the outlet of upstream branch sewer and the delivery port of upstream branch sewer, the overall dimensions size of waterwheel of pumping up water then determine according to the size checking well head, the requirement that the waterwheel that must satisfied pump up water normally runs.The water tray of waterwheel of will making during installation to pump up water is right against the discharge opening place of upstream branch sewer.According to the horizontal flow velocity of upstream current and the lower sluicing Flow Velocity of upstream branch sewer as the power of rotation promoting waterwheel, the water tray when waterwheel side of pumping up water then can surface and takes sewage out of the water surface due to the fall water tray of its corresponding opposite side of water impact.

The water tray structure of pumping up water on waterwheel is groove shapes, can carry the sewage of certain volume when it surfaces and sewage be raised out the water surface, current is aloft flowed out from hole and forms the chance that spray shape increases its ingress of air, and then accelerate the dissolving of air.Main Function relies on the waterwheel that pumps up water to carry out constantly stirring the chance of increase water stream contacts air to manhole place current to obtain supplementing of dissolved oxygen.

It is below the embodiment that inventor provides.

See Fig. 1, the present embodiment provides a kind of water body flow that relies on to the longitudinal plan of the manhole of the automatic oxygenating of downstream sewage conduct, comprise manhole 10, the borehole wall of manhole 10 is marked time 1, in manhole 10, there is upstream branch sewer 8 side, the bottom of manhole 10 is that 9(upstream, main sewer road sewage conduct is communicated with at this with downstream wastewater pipeline), in the bottom of manhole 10, the waterwheel 2 that pumps up water is installed, this waterwheel 2 that pumps up water is positioned on the water surface in main sewer road 9, and is fixed on by fixed support 3 on the borehole wall of manhole 10 both sides.

Pump up water on waterwheel 2 and have rotating disk, this rotating disk is centered by bearing, in bearing both sides according to floral disc 7, the hollow cylinder structure of shoe is wrapped by soft bottom land 6, the outer of soft bottom land 6 is with reinforcing bar annulus 5, reinforcing bar annulus 5 is evenly fixed with water tray 4, and such structure design too increases the stability of water tray 4, can prevent because water flow impact pressure is excessive and cause water tray 4 from accidental reinforcing bar annulus 5.

In the present embodiment, water tray 4 is groove shapes, and bottom is porose, is prepared from by rubber.

Rotating disk can rely on rotating disk be positioned at water surface bottom volume number and produce the buoyancy of different size, rely on the difference of buoyancy and waterwheel self gravitation, make it be in all the time and float on the water surface.

Fig. 2 is the carrying out practically schematic diagram of waterwheel of pumping up water.Pump up water the main water of main sewer road, upstream 9 and upstream branch sewer 8 that relies in rotational energy source of waterwheel 2 to the impact force of the waterwheel 2 that pumps up water; The water of main sewer road, upstream 9 and upstream branch sewer 8 directly can impact the water tray 4 of the groove shapes on the left of the waterwheel 2 that pumps up water, its inside is made to be full of sewage, hole bottom water tray 4 can constantly make water shed discharge, and the miniaturization of water body can make it be easy to dissolved oxygen.Sewage is raised out pipeline by the water tray 4 of the groove shapes on the right side of it that rotates counterclockwise and make of waterwheel 2 of pumping up water, and aloft constantly discharge make it obtain oxidation effect.

Fig. 3 (a) and 3(b) be two kinds of working condition charts of left and right sides water tray 4 on rotating disk, water tray 4 permanent position is the upper edge at soft bottom land 6, is convenient to water tray 4 and constantly produces and leak.Wherein, Fig. 3 (a) becomes full sewage sewage by the constantly outer row of the eyelet bottom water tray 4 for the end soft when groove on the right side of the waterwheel 2 that pumps up water leaves the water surface.And when soft bottom land 6 turns to opposite side as Fig. 3 (b), upstream branch sewer is let out water impact 8 times and is entered water tray 4, water tray 4 drives the waterwheel 2 that pumps up water to rotate in filled with water state, and the current in main sewer road, upstream 9 can promote waterwheel 2 rotation in the horizontal direction of pumping up water bottom manhole simultaneously.The process of oxygenation all realizes in the process of the continuous externally discharged waste water of water tray 4, and the current that the eyelet due to water tray 4 flows out are small to be made itself and air contact surfaces amass to be beneficial to air dissolves more greatly, to promote its dissolved oxygen amount.

Fig. 4 is the mounting plane figure of waterwheel 2 in manhole 10 that pump up water.It is installed and main relies on two supports 3 to make on its borehole wall being fixed on manhole 10, and the waterwheel 2 that pumps up water is positioned on the water surface in main sewer road 9, is convenient to masses hit and enters and pump up water in the water tray 4 of waterwheel 2.

Claims (2)

1. one kind relies on water body flow to the manhole of the automatic oxygenating of downstream sewage conduct, comprise manhole (10), upstream branch sewer (8) is had in the side of manhole (10) inwall, the bottom of manhole (10) is main sewer road (9), main sewer road (9) is flowed under the current direction of upstream branch sewer (8), it is characterized in that, in manhole (10) bottom, the waterwheel that pumps up water (2) is installed, this waterwheel that pumps up water (2) is positioned on the water surface of main sewer road (9), and be fixed on the borehole wall of manhole (10) both sides by fixed support (3),

The described waterwheel that pumps up water (2) there is rotating disk, this rotating disk is centered by bearing, in bearing both sides, floral disc (7) is installed, the hollow cylinder structure of carrying out is wrapped by soft bottom land (6), be with reinforcing bar annulus (5) at the outer of soft bottom land (6), reinforcing bar annulus (5) is evenly fixed with water tray (4).

2. the water body flow that relies on as claimed in claim 1 is to the manhole of the automatic oxygenating of downstream sewage conduct, and it is characterized in that, described water tray (4) is groove shapes, and bottom is porose.