CN1316393A

CN1316393A - Process for treating sewage by wind-driven oxygenation and aeration

Info

Publication number: CN1316393A
Application number: CN01105471A
Authority: CN
Inventors: 章永泰; 肖伟良
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-28
Filing date: 2001-02-28
Publication date: 2001-10-10

Abstract

A process for treating sewage by combined wind-driven oxygenation and aeration features that the wind-driven electric generator drives the submerged pump and mixer for deep-layer oxygenation and aeration, the wind-driven vane drives blade wheel for surface-layer oxygenation and aeration, and both methods are combined. Its advantages is no need of electric energy.

Description

The method for the treatment of sewage by wind-driven oxygenation and aeration

What the present invention relates to is the method for a kind of method of oxygenic aeration, particularly a kind for the treatment of sewage by wind-driven oxygenation and aeration, belongs to the waste water control field.

City a large amount of sanitary sewage, trade effluents every day, because in time do not administer, these dirty contaminated wastewaters the river course and the environment in city, are having a strong impact on city resident's life, severe contamination is regional even endanger vegeto-animal life and human living condition, has destroyed the eubiosis.In the big lake of China near the city, in the pollution, have 50% approximately from municipal effluent, 50% from basin non-point source rainwash and lake region precipitation, far away from the city or be subjected to urban industry waste water, sanitary sewage discharging to influence less lake, reservoir, about 70% pollution of area source from lake drainage, so improvement river course, lake eutrophication is an important step in the waste water control.Utilize wind energy directly to be the existing very long history of human service, be to utilize wind-power electricity generation mostly, also utilize the wind driver tool, as the mill, water storage etc., utilize wind-force half congealed in addition at Xiao Chi, fishpond shines the equipment of water as ventilation, a kind of fish pond oxygenate apparatus of using of producing as Canadian Trillium Windmill Inc. company, its power is to adopt to be positioned at the above windmill generating in ground, drive the pump running that is positioned at pond bottom by windmill rotation generating back and stir whole water body, surperficial water body and bottom water body are exchanged, mix turning down with the water of bottom oxygen level the end of than with the hyperoxic water in top layer, eliminate the concentration difference of the inner dissolved oxygen of water body, thereby reach purpose to the pond oxygenation, its basic effect just reaches the purpose of safeguarding water quality, it just utilizes pump stirring water body that the oxygen in whole pond is evenly distributed, and can not be used for processing to sewage, more can not combine deep aerating and top layer aerating apparatus a large amount of air are charged in the water, also do not have the oxygenic aeration that water field of big area is carried out deep layer when making water body form convective exchange, it is black smelly to eliminate water body, destroy the living environment ability of algae.Oxygenating and aerating unit and pool oxygenation device that part is usually used in the sewage disposal have experienced small-bore aeration, air pocket aerator and the present several developmental stage of micro-hole aerator of seeing more, but all there are some still unsolved defectives, wide aperture aeration disadvantage is that energy consumption is excessive, and there are the serious problems of stopping up easily in micro-hole aerator.Through the document Investigation retrieval, still there is not the bibliographical information of administering river course, lake sewage about the aerating apparatus that utilizes wind energy combination top layer and deep layer so far.

The objective of the invention is to overcome deficiency of the prior art, a kind of method for the treatment of sewage by wind-driven oxygenation and aeration is provided.

Technical scheme of the present invention is as follows: 1, utilize wind energy, method in conjunction with deep layer and top layer oxygenic aeration, aerogenerator drives submersible pump and flow mixing device carries out the deep layer oxygenic aeration, the wind wheel impeller is carried out the top layer aeration to water body, none need electric energy consumption, solve the high energy consumption problem in the water body treating engineering, saved the energy; 2, top layer oxygenic aeration and the effective bonded method of deep aerating, enlarged the oxygenation zone, and make oxygenation even: the method for 1. effectively utilizing the wind speed oxygenic aeration on the water surface, when wind speed reaches 6m/s, the water screw of wind-driven generator rotates and drives the power pack operation, electric power can reach 20KW, give submersible pump and flow mixing device electrical transmission by switch box, water body is carried out the oxygenic aeration of deep layer, when wind speed during greater than 1.6m/s, wind wheel drives and is positioned at the following impeller rotation of the water surface and makes the water body convective exchange, breaks the concentration difference of dissolved oxygen between the water body different levels, realized oxygenation, solved energy consumption problem of higher in the oxygenation process surface water.2. the wind energy aeration bonded method on the flow-mixing oxygen-enriching of deep layer and top layer, with the flow-mixing oxygen-enriching device is the center, it is on the circle at center that some typhoon aerators are distributed in the flow mixing device, be petal arrangement, on mixed flow tube and wind energy aeration machine are all bubbled through the water column, its bottom all links to each other with floating drum, and with anchoring below the water body, solved the water surface and located and stable problem.

The present invention has substantive distinguishing features and marked improvement, the present invention is used for river or lake, and during greater than 6m/s, aerogenerator is started working at wind speed, drive submersible pump and mixed flow device and carry out deep aerating, five typhoons energy aerator is also worked simultaneously and is carried out surface aeration.The wind energy aerator is the arrangement of plum blossom shape in this device, considers to have the wind comes from of different directions when working that on the river and lake water surface no lobe plum-shaped structure can both keep stable to the wind comes from of all directions; At wind direction single and wind speed hour, five typhoons can have at least two can work in the aerator, have guaranteed certain aeration rate.The service area of every typhoon energy aerator can reach 600m ², such five aerators are used in combination area coverage and can reach 1500m at least ²Water surface area.

The present invention is applicable to the blue-green algae district occurred frequently, device can cover bigger waters after starting, and under very little wind speed, also can carry out the top layer aeration, destroy the hydrostatic layer, according to algae grows mechanism: under hydrostatic condition, nutrition such as nitrogen, phosphorus makes algal grown vigorous, the hydrostatic layer is in a single day destroyed, and the dissolving gradient in the water does not exist, and dissolved oxygen is evenly distributed, quickened the utilization ratio of the oxygen of water body mid-deep strata, blue-green algae has lost life condition and can not survive.Therefore, the present invention plays certain restraining effect to the ubiquitous body eutrophication problem of the present great water body of China.The present invention does not need power, not power consumption, operation simply, and operational cost only is a maintenance cost, meets the present economic situation of China, is specially adapted to the oxygenic aeration of Chinese large-sized water body.

Below in conjunction with accompanying drawing embodiments of the invention are further described:

Fig. 1 embodiment of the invention synoptic diagram (one)

Fig. 2 embodiment of the invention synoptic diagram (two)

Concrete mode of the invention process can have multiple, wherein can deeply feel layer embodiment of combination oxygenating and aerating unit and can be used as an example with wind energy, as shown in Figure 1 and Figure 2: when wind speed reaches 1.6m/s, when starting wind speed, wind wheel 1 rotates, and promotes the rotation of central shaft, drives underwater impeller 2 and rotates, stir water body, carry out surface aeration.During aeration, impeller 2 stirs surface water, makes the water body top layer produce hydraulic jump, macro-mixing liquid water droplet and membranaceous water are got rid of in air, carry the air-water mixture of air formation then and get back in the water, the aqueous vapor contact area is big more, and airborne oxygen is easier dissolving in the water just.Along with the moving wind wheel 1 of continuous wind, drive rotation axis and impeller 2 and constantly rotate, surface water is brought in constant renewal in, and oxygen constantly dissolves in, and the mixed solution that content is little in the lower layer of water is under impeller 2 stirring actions simultaneously, and circulation makes progress; The downward circulation of mixed solution that top layer oxygenation zone oxygen level is many, the different water layer of dissolved oxygen concentration exchanges up and down, thereby has improved the dissolved oxygen content of water body, makes the dissolved oxygen levels of each layer water body under the top layer that in various degree raising be arranged.

When wind speed during greater than 6m/s, aerogenerator 3 work drives submersible pumps 4 feedwater pressurizations and enters in the tube along barrel along the barrel high-speed rotational with tangential direction along flow mixing device 5 barrels by water inlet pipe, in tube, form certain vacuum condition, the outside is imported the cylindrical shells bottom to air or pure oxygen by admission gear 7 by air compressor machine or oxygen gas-holder again, and gas enters the entire body cylindrical shell under the effect of external pressure, interior suction.The high velocity flow of tangential direction carries out the hydraulic shear effect again, and the gas in the input tube is cut into small bubble population, has strengthened water oxygen contact area.High pressure water is flowed out by discharge mechanism 6 behind the multilayer sleeve owing to the high speed centrifugation effect forms high-strength eddy flow, and multilayer sleeve embedded structure has prolonged the duration of contact of water oxygen, has strengthened the dissolution rate of oxygen.The source of the gas of air intake structure 7 is gone into air pressure in the tube by air compressor machine or oxygen canister, discharges microbubble by small pore, and the current that entered by tangential direction cut into microbubble, and with high speed turbulent water thorough mixing after form the water of high oxygen rich air; When mixed flow stirring and dissolving oxygen, water fully stirs in this multilayer with bubble and mixes, and gas forms micro-bubble under the cutting of high velocity flow, and pressure makes the moment that gas phase and liquid interface disappear simultaneously, finishes the transmission of gas phase to liquid phase matter; Well-mixed aqueous vapor is flowed out by the mixed flow water part, be with into water arm in the inside of discharge mechanism, mixing the back once more with the water that enters from arm when steam water interface is discharged discharges, the pressure that has increased sleeve inner makes water outlet be easy to discharge, mixing of also favourable and aqueous vapor, realized efficient oxygenation to water body.

Claims

1, a kind of method for the treatment of sewage by wind-driven oxygenation and aeration, it is characterized in that 1, utilize wind energy, method in conjunction with deep layer and top layer oxygenic aeration, aerogenerator drives submersible pump and flow mixing device carries out the deep layer oxygenic aeration, the wind wheel impeller is carried out the top layer aeration to water body, none need electric energy consumption has solved the high energy consumption problem in the water body treating engineering, has saved the energy; 2, top layer oxygenic aeration and the effective bonded method of deep aerating, comprising: 1. effectively utilize the method for the wind speed oxygenic aeration on the water surface, 2. the wind energy aeration bonded method on the flow-mixing oxygen-enriching of deep layer and top layer.

2, the method of this treating sewage by wind-driven oxygenation and aeration according to claim 1, its feature is that also aerogenerator drives submersible pump and flow mixing device carries out the deep layer oxygenic aeration, the wind wheel impeller is carried out the top layer aeration to water body, when wind speed reaches 6m/s, the water screw of wind-driven generator rotates and drives the power pack operation, give submersible pump and flow mixing device electrical transmission, water body is carried out the oxygenic aeration of deep layer, when wind speed during greater than 1.6m/s, wind wheel drives the impeller rotation that is positioned at below the water surface and makes the water body convective exchange, with the flow-mixing oxygen-enriching device is the center, it is on the circle at center that some typhoon aerators are distributed in the flow mixing device, is petal arrangement, on mixed flow tube and wind energy aeration machine are all bubbled through the water column, its bottom all links to each other with floating drum, and schedules below the water body with anchoring.