AU2005100784B4

AU2005100784B4 - A filtering reactor

Info

Publication number: AU2005100784B4
Application number: AU2005100784A
Authority: AU
Inventors: Shusen Yu
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-27
Filing date: 2005-09-22
Publication date: 2005-12-01
Anticipated expiration: 2013-09-22
Also published as: CN2804080Y; AU2005100784A4

Description

AUSTRALIA

Patents Act 1990 COMPLETE SPECIFICATION INNOVATION PATENT Applicants: Yuan Yu Shusen Yu Jian Yu Invention Title: A FILTERING REACTOR The following statement is a full description of this invention, including the best method of performing it known to me/us: 2 A FILTERING REACTOR STechnical Field eC This invention relates to a filtering reactor and sewage treatment apparatus.

00 SBackground Technology O Currently there are physical, chemical, biochemical V) 10 and other methods in the field of sewage treatment.

SBecause of the complicated and different components of sewage, there are many different methods in sewage treatment. The most widely used methods now inside and outside the nation is anaerobic and aerobic method, assisted by the chemical and physical means. The anaerobic method, represented by USAB, is now widely used.

The anaerobic method for sewage treatment is acidifying by water solution the big molecule groups into small molecule groups, and thus increasing the ratio of BOD/COD, laying a firm basis for the aerobic treatment.

The current aerobic method is usually using the active mud method and the biomembrane method. The key of these methods is the using ratio of oxygen. The supplying method is most often mechanical effluxing machine, such as Roci Effluxer to efflux. The effluxer is often made of high molecule material or plastics, and the venthole is often 0.5mm, the effluxed air filtered from the effluxer is larger than 1mm. Tests and practice proves that the oxygen using rate of the traditional device is 6-20%. The oxygen using rate is low and the resting time of water is long. All these contribute to the fact the traditional equipment is in large size, consumes high energy, produces low efficiency, occupies a large area, requires high investment and the high operational cost.

The purpose of this invention is to provide a H:\melindaf\keep\Speci's\A FILTERING REACTOR.doc 22/09/05 3 Q- practical new type of filtering reactor with low energy CL demand, high efficiency, small size, low cost of Sinvestment and operation, convenient operation, safe and C- clean usage.

Summary of the Invention 0According to the present invention there is provided a filtering reactor for sewage treatment comprising a Shousing supporting a centrally located through pipe V) 10 surrounded by a biomembrane filtering device, an efflux pump positioned at the top of the reactor in communication with the through pipe to feed sewage and air to the reactor, the height to diameter ratio of the reactor being between 3 and 7, the housing having a first outlet for returning matter to be recycled into the reactor and a second outlet for filtered matter positioned above the first outlet.

The invention also includes a sewage treatment apparatus comprising means to feed sewage to the efflux pump of the filtering reactor of claim 1 and a deposition tank fed from the second outlet of the reactor, the deposition tank having an upper outfall for cleaning water and a mud outlet at the base, the mud outlet being selectively in communication with a pump that recycles the mud to the reactor or a releasing tank.

Description of the Drawing One embodiment of the invention will now be described with reference to the accompanying drawing which is a schematic illustration of the circuit of a sewage treatment apparatus.

Description of the Embodiment The structure of this particular new type of filtering reactor is the sewage flows from the sewage pipes through the infalling pump 2 and the cycling pump 3 H:\melindaf\keep\Speci's\A FILTERING REACTOR.doc 22/09/05 4 0 to the top of the reactor 5 and the outfalling mouth 12 a set in the upper part of the reactor deals with the sewage Sduring the process the sewage flows to the deposition tank C 15, on the top of which an outfalling mouth for cleaning water 16 is installed and on the bottom an outfalling mouth for mud 17. The special feature is that the O contrast between the height H of the reactor and its diameter D is H:D=3-7, and the cycling outfalling mouth 8 0 in the upper part of the reactor is connected to the mud it pump 18 and infalling pump 2 through pipes, and one end of Sthe mud outfalling mouth is connected to the mud pump 18 through pipes while the other end of the mud outfalling mouth is connected to the releasing tank. The efflux pump 9 is set on the very middle of the top of the reactor, and the upper end of the efflux pump is connected to the pipes extended from the cycling pump 3 and its lower end is plugged into the reflux pipe 6, and the reflux pipe is thoroughfare, a biomembrane filtering device 7 is installed between the internal wall of the reactor and the reflux pipe.

By using this new type of effluxer, the organic combination of the internal aeration and the biomembrane filtering device, the contrast between the height and diameter of the reactor H:D=3-7, the efflux pump can atomize air and lead it through the reflux pipe into the bottom of the reactor, and the sewage is filtered to the top of the reactor while going up through the biomembrane, then goes into the next cycling after flowing out from the cycling pump. During this process, the oxygen in the air is solute into the sewage and the sewage, after many times of solution with oxygen, filtering and cycling reaches the standard of treatment and goes into the deposition tank.

After garrulous coagulation and deposition, the clean water on the top of the deposition tank becomes the clean water qualified for being released, while the mud on the bottom of the tank can go back into the mud pump and H:\melindaf\keep\Speci's\A FILTERING REACTOR.doc 22/09/05 5 Q- undergo another cycling, which reduces the releasing of Q^ quantities of mud. The atomised air bubble is in micro- Smeter size, this largely increases the contact area and ^C the rate of using oxygen. A magnetizer may be installed on the infalling pipes of this new type, so that when sewage goes through the strong magnetic field, the 0molecule chain of the water is cut off and chemical and physical change happens, which increases the oxygen O solution, the tension, penetrating pressure and solution V) 10 rate of water. This practical new type is simply structured with proper design and can be widely used in the treatment of industrial and living sewage.

Furthermore, it costs little but has high efficiency. The volume of the equipment is small so the investment and utilising is in low cost, while it is very convenient to operate and manage. And it is clean and safe.

The reactor 5 is preferably made of steel with metres for diameter and 15 metres for the height. The afflux pump 9 is installed on the very top middle of the reactor. The upper end of the afflux pump is connected to the pipes 1 extended from the infalling pump 2 and the cycling pump 3. The bottom end of the afflux pump is plugged into the reflux pipe 6, and the lower part of the reflux pipe is a thoroughfare, and soft filling material specially used for sewage treatment is hung in clusters between the internal wall of the reactor and the reflux pipe. Biomembrane 7 is naturally grown or planted in the said soft filling material. The cycling outfalling mouth 8 set on the upper part of the reactor is connected to the mud pump 18 through pipes and the mud pump is connected to the infalling pump by a pipe, the outfalling mouth after treatment 12 is connected to the deposition tank through a pipe, on which visualiser 14 and a valve 13 is installed. A valve could be positioned in a suitable place and a container could be used to contain the water under treatment in order to study and analyse the nature H:\meiindaf\keep\Speci's\A FILTERING REACTOR.doc 22/09/05 6 Q- of the water. An outfalling mouth of clean water 16 is CL installed on the top of the deposition tank, and a mud Sreleasing mouth 17 is installed in the bottom of the ^C deposition tank. A three-way pipe is used for the installation of the releasing mouth, with one hole connected to the mud releasing tank, and the other to the Smud pump 18. On each pipe a valve 13 is installed. A magnetiser 4 is made from Nd iron boron magnet. A pressurised lid 11 convenient to open is installed on the top of the reactor 5, in order to isolate the stink and ensure safe and clean usage.

The working procedure of the treatment apparatus is the sewage after anaerobic treatment goes into the afflux pump 9 through the infalling pump 2 and cycling pump 3 along the pipe, and the afflux pump atomizes the air into the sewage, which goes to the bottom of the reactor by pressure through the reflux pipe 6. The sewage flows out of the recycling outfalling mouth 8 after filtering by the biomembrane during its rising process, and goes into another cycling through mud pump and the infalling pump.

During this process, the oxygen in the air is solute into the sewage. The sewage undergoes several times of oxygen solution and filtering during the cycling, and reaches the standard of treatment. It then goes into the deposition tank. After garrulous coagulation and deposition, the clean water on the top of the depository tank becomes the clean water qualified for being released, while the part of the mud on the bottom of the tank can go back into the mud pump and undergo another cycling, and the rest of the mud shall flow to the mud tank. The installation of a magnetiser on the infalling pump can magnetise the sewage going through, and cause physical and chemical reactions, so that the solution of oxygen, tensibility, penetrating pressure and rate of solution is increased.

H:\melindaf\keep\Speci's\A FILTERING REACTORdoc 22/09/05

Claims

2. The filtering reactor according to claim i, wherein the filtering device comprises soft filling material suspended in clusters between the through pipe and the wall of the housing of the reactor.
3. The filtering reactor according to either claim 1 or claim 2, wherein the top of the reactor is sealed by a pressure tight lid.
4. A sewage treatment apparatus comprising means to feed sewage to the efflux pump of the filtering reactor of claim 1 and a deposition tank fed from the second outlet of the reactor, the deposition tank having an upper outfall for cleaning water and a mud outlet at the base, the mud outlet being selectively in communication with a pump that recycles the mud to the reactor or a releasing tank. The sewage treatment apparatus according to claim 4, wherein an infalling pump feeds sewage to the efflux pump via an infalling pipe that includes a device to subject the sewage to a magnetic field. H:\melindaf\keep\Speci's\A FILTERING REACTOR.dOC 22/09/05