DE2919221A1 - Revolving biological trickle drum - with spirally wound plastic tubes inside oxygen filled enclosure - Google Patents

Abstract

In a biological treatment of sewage and industrial wastes, a totally enclosed housing for a revolving trickling drum is kept at an oxygen atmosphere with the effluent. A spiral arrangement of plastic tubes on the partly immersed drum ensures constantly changing osmotic pressures of the microorganisms. Such a system requires a minimum of space and material. It is entirely free from smells and can be installed even inside factories of the food industry.

Description

Rotating spiral dropper for chemophy-

sikalisch - biological wastewater treatment The method and the device concerns the chemically and physically supported biological partial or full cleaning of wastewater in a horizontally rotating hollow spiral drip system that It can be set up free as well as completely encapsulated charged with wastewater that is mechanically pre-cleaned.

This procedure is not known. There are sewage treatment plants of a similar external nature, based on the principle of the England and the USA developed immersion bodies and subsequently further developed them Immersion drip or disc immersion body work. These are z. B. around plastic hoses that are spirally wound lengthways around an axis or circular discs made of plastic or other material that are used as organic turf supports alternately with the rotation of about up to half in a sewage flow-through basin Have contact with sewage and air. This creates the bio-mass on the one hand Food, on the other hand Oxygen in more or some adequate Amount offered because these systems operate under normal atmospheric conditions. The specific cleaning performance of conventional systems is accordingly limited. This means that depending on the type and degree of pollution of the sewage spacious resp.

large-scale systems to achieve adequate wastewater treatment required are.

The object of the invention is to provide a method and a device Significantly lower mass and area requirements, i.e. a high-performance unit create that wastewater, physically supported, bio - chemically only in the open air as well as in a completely encapsulated system.

The object is achieved according to the invention in that 1. the wastewater after the mechanical primary clarification in a closed and encapsulated system the goes through further cleaning stages and thus no evaporation or aerosols and odorous substances penetrate to the outside, so that it is possible to use such systems themselves to install in production buildings of the food industry 2. the sewage conveyed up from a tub in a rotor block rotating around a horizontal axis and with a free gradient to further cleaning stages or

can run for clarification 3. the Hotorblock out several discs, each made of one or more spirally wound plastic tubes exist, is joined together so that there is a space between the panes remains or alternatively the disks press against each other are 4. that of the rotating Spirals that plunge into the wastewater basin at a given depth, wastewater at Immersion recorded and when surfacing, oxygen-air mixture is sucked in. This ensures that all of the wastewater is covered with the organic turf Inner surfaces of the spiral tubes get in contact and short-circuit currents are excluded 5. there is oxygen in such a large quantity and concentration in the rotor block chamber it is introduced that there is an oversupply for the oxygen demand of the biomass 6. is the air - oxygen mixture in hollow spirals due to the increase in hydrostatic pressure as a result of the spiral rejuvenation is compressed and the micro - organisms in stress require more energy due to the constant pressure change. As a result, the Food intake increases, metabolism accelerates and oxygen uptake be favored by the change in esmotic pressures in the bio-cell In The present procedure differs significantly from points 1 - 6 known immersion drip or disc immersion method.

The invention is explained in more detail below using an exemplary embodiment explains that is shown in the accompanying drawing.

FIG. 1 shows the front elevation with a longitudinal section through the spiral hollow drip body system (1) and the cross section through a secondary clarifier (2) Figure 2 shows the floor plan of the spiral drip body system (1) and a secondary clarifier (2), Figure 3 shows the cross section of the spiral drip system (1) The spiral drip (i) Consists of circular disks made from plastic tubes (3) through spiral-shaped Winding made and strung together on a Rototachse (4). In the vicinity of the rotor axis (4), the disks are designed so that the rotating movement Liquid conveyed up in the spiral disks in a subsequent to the rotor axis Longitudinal channel (5) is received and into the collecting channel (6) of the supply line (7) to Secondary clarifier (2) runs out. The mechanically pre-treated wastewater is through a Float valve (8) controlled in the same amount in the system basin (9) let in, in which it is carried up through the spiral hollow drip body (i).

The hollow spiral drip head (1) dips so deep into the system basin (9) that 1/3 of its circumference is below the surface of the water. From this it follows that when rotating around its own axis, the plastic pipes (3) to be cleaned Absorb water and suck in a mixture of oxygen and air when surfacing. Through the Tapering of the spirals in the direction of the rotor axis (4) builds up in the disks made of plastic pipes (3) in the shape of a parabolic water column, which has a hydrostatic Exerts pressure on the trapped oxygen - air mixture, which is physically supports the biochemical cleaning performance in this process.

The on the inner and outer surfaces of the hollow spiral drip body (1) growing organic lawn is constantly renewing itself, d. H. new bacteria form and multiply old bacteria are flushed out with them and in the secondary clarifier (2) through sedimentation or separated from the purified water by a sieve or filter system.

The hollow spiral drip body (i) is encapsulated in a tight housing (10), introduced into the pure oxygen (ii) in gaseous form under pressure or also in liquid form will. The pressure is determined by the adjustable immersion depth (13) of the inlet manifold (12) in the secondary clarifier (2), which is also hermetically sealed and with the further cleaning stages or with the clear water drain (i4). Of the Sedimented sludge is withdrawn from the secondary clarifier (2) for further treatment (15).

Claims (1)

PATENT CLAIMS claim 1 method and device for chemophysical -biological wastewater treatment, characterized in that bacteria are concentrated in Oxygen environment get in contact with wastewater and the same or different hydraulic ones and pneumatic pressures to change their osmotic pressures. Ans method and device according to claim 1, characterized in that that in an airtight enclosure and in a concentrated oxygen environment a hollow spiral drip body rotates, the inner and outer surfaces of which are covered with organic turf from microorganisms overgrown and during the rotation by partial Immersion in a basin of wastewater to be cleaned and oxygen when surfacing absorbs, promotes and thereby different hydrostatic in the hollow spirals Pressures builds up that change the osmotic pressures of the microorganisms, the metabolism promote the vitality of the organic lawn and its growth through forced bacterial multiplication increase the uptake of food and oxygen through the cell membranes of the bacteria enlarge and thus the biological cleaning process compared to the known chemobiological Physically support and accelerate processes.