CN1038258A

CN1038258A - Handle the biologic spiral bed process and the floating stuffing of organic waste water

Info

Publication number: CN1038258A
Application number: CN89102637A
Authority: CN
Inventors: 田刚; 孙天华; 张洁; 刘国信; 方慕一
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-04-29
Filing date: 1989-04-29
Publication date: 1989-12-27

Abstract

A kind of biologic spiral bed process and filler special that utilizes the immersion biomembrance process to handle organic waste water is in the water body that circulates in the water outlet place is provided with the structures of graticule mesh or grid, adds special-purpose floating stuffing.The proportion of control filler is 0.99 to 1.07, makes filler under the drive of waterpower, is the cyclic motion state with processed water.The shape size of locating of filler satisfies that not see through the aperture be the requirement of 10mm circular hole.The acting as of graticule mesh or grid held back filler and made water outlet and the microbial film that comes off passes through smoothly.The processing efficiency of waste water is higher than fixed bed, and is easy to operate, and performance is better than other bioremediation.

Description

Handle the biologic spiral bed process and the floating stuffing of organic waste water

The present invention relates to a kind of filler special biologic spiral bed and that adapt therewith that utilizes, handle the method for organic waste water.Biologic spiral bed method is an immersion microbial film in a kind of utilization bed, decomposes organic method in the waste water; Floating stuffing is biologic spiral bed middle indispensable filler special.

At present, the multiple operation scheme of utilizing the immersion biomembrance process to handle organic waste water is arranged, except that fluidized-bed, often there are problems such as auxiliary facility complexity such as filler obstruction, waterpower short circuit, back flushing, maintenance difficulty, and fluidized-bed exists the bad disadvantage of operability, has therefore limited its industrial applications.

Biologic spiral bed structure and operation scheme are: in being the processed waste water that circulates, add proportion and equal or be slightly larger than the filler special of water, make filler under the drive of current, also be the cyclic motion state with water body, purify liquid waste by the biomembranous biological decomposition that is grown on the filler, water outlet place at the bed body is provided with graticule mesh or grid, make water outlet and come off under microbial film by holding back filler.Present method is divided into vertical bed and horizontal bed by operation scheme.The track that water body circulates is parallel to the horizontal bed that is referred to as of horizontal plane perpendicular to the vertical bed that is referred to as of horizontal plane.

Present method can be used for aerobe and handles and anaerobic biological treatment.When being used for anaerobic treatment, preferably select vertical bed for use, can adopt pump as promoting water body mobile device, when being used for aerobic treatment, can adopt any oxygenation mode and any water body to promote form, but in vertical bed with blast aeration for well, in horizontal with jet-flow aeration for well, generally should when finishing oxygenation, realize the promotion of water body.

Floating stuffing specific gravity range used in the present invention is 0.99 to 1.07, the bulk of filler, and should meet to be the requirement in the hole, garden of 10mm by the aperture.In vertical bed, the outer shape of filler can be that bidimensional stretches, and in horizontal bed, the outer shape of filler should be a three-dimensional extension.The combination of preferably various flat boards of the agent structure of filler or bent plate, the thickness of plate is satisfying under the mechanical conditions, and is thin as much as possible.The basic material of filler is generally selected polyethylene, polypropylene or second, propylene copolymer for use.Add inorganic filler, its proportion be increased between 0.99 to 1.07, according to the different selections of filler, adopts different chemical or (with) physical method carries out surface treatment, purpose is to make it be beneficial to adhering to of microorganism and grow.

According to the difference of different packing specific areas, select different packing dosing rates for use, generally select 20%-60% for use.Filler proportion is similar to water, thus be easy to be driven by the less circulating water body of kinetic energy, thus needn't the device of high energy consumption be set for dragging filler.Because the granularity of filler is bigger, after being provided with graticule mesh or grid, needn't leave the certain protection district as fluidized-bed, and the fluidic circulation velocity is less demanding, so processing property is higher than fluidized-bed.Filler is directly rendered in the body, needn't be arranged on essential framework or dividing plate in the fixed bed, thereby makes a body structure simple, and easy to maintenance.Filler selects for use chemistry and all good polyolefin plastics of physicals to manufacture, and shape requirement is not high, and when selecting the good profile of stress condition for use, life cycle is longer than honeycomb, soft and semi soft packing.Because filler is kinestate, under the gentle stirring of washing away of water, microbial film upgrades fast, the biological activity height, and almost do not have the filler latch up phenomenon, therefore, under the situation of equal biomass, the biological load of this law is higher than fixed bed 20-50%.Fluid is selected recurrent state, is mainly and avoids the accumulation of filler in a certain zone, has avoided the fluidic short circuit again simultaneously, does not almost have the dead band in biologic spiral bed, so the space availability ratio of structures is higher than additive method 10-30%.Because the interior available filling surface of the volume of unit structures is greatly long-pending and biomembrane activity is high, the comparable fixed bed of volumetric loading improves 50-100%.In vertical bed, to the not too big restriction of height of bed, so the comparable fixed bed of floor space save more than 60%, less demanding to the cross-sectional shape of bed in horizontal bed, trapezoidally build by laying bricks or stones so that cost saving so can adopt with masonry.In service at bed, the dosing rate of filler can fluctuate within a large range, can utilize the method that structures are allowed some leeway when design, relying on increases the problem that packing dosing rate solves the increase of the processing water yield, also can utilize mud backflow intensified operation process.

Claims

1, a kind of biologic spiral bed process and floating stuffing with immersion biomembrance process processing organic waste water is characterized in that being provided with graticule mesh or grid at the water outlet place.

2,, it is characterized in that processed water and floating stuffing all are the recurrent state motion according to claim 1 predetermined process method and floating stuffing.

3, according to claim 1 and 2 predetermined process method and floating stuffings, the proportion that it is characterized in that filler is 0.99 to 1.07, the requirement of the clumsy section of the worried waste Gorgon euryale ü  of outer latitude sound of a bird chirping plaited straw  of filler 0mm circular hole.