CN2393868Y

CN2393868Y - Bioreactor with pressure membrane for filtering drained water

Info

Publication number: CN2393868Y
Application number: CN99218414U
Authority: CN
Inventors: 陈润明
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-07-26
Filing date: 1999-07-26
Publication date: 2000-08-30
Anticipated expiration: 2009-07-26

Abstract

The utility model relates to a pressure type film filtering drainage biochemical reactor, and a certain internal pressure is generated in the reactor under the combined action of water intake pressure and aeration pressure; a film filtering drainage device is arranged in the reactor; under the action of the internal pressure, sewage which takes the biochemistry action is drained after filtered by the film filtering drainage device, and activated sludge in the water is blocked in the reactor to greatly increase sludge concentration, and thus, treatment efficiency can be greatly enhanced. Because the utility model combines an activated sludge method and a film separation technology, a sedimentation tank and a sludge return flow system of the traditional technology are saved to enable the technology system to be simple, enable management to be convenient, and effectively lower construction cost, and furthermore, water after processed can be cycled as industrial water.

Description

Pressure type membrane filtering drainage biochemical reactor

The present invention is a sewage disposal technology.

Activated sludge process is the most frequently used a kind of sewage biochemical processing of sewage treatment process.Traditional activated sludge process, biochemical good sewage must flow into settling tank and carries out mud-water separation in the aeration tank, and carries out biochemical reaction after the spissated mud of partly precipitated constantly need being passed back into aeration tank and the sewage thorough mixing that enters the aeration tank by the mud return-flow system.This traditional activated sludge method processing technique systematic comparison complexity, many, the complex management of equipment, owing to be difficult to keep having in the aeration tank active sludge of higher concentration, so this traditional technology system handles efficiency ratio is lower, the processing unit volume is big, takes up an area of to cause construction costs very high greatly.In case entering water quality, the water yield of aeration tank bigger load variations takes place or manages to make a fault to be difficult to all guarantee that effluent quality of sedimentation tank reaches the emission standard of regulation.

In view of the existing above-mentioned many disadvantages of existing traditional activated sludge process technology, the objective of the invention is to invent a kind of pressure type membrane filtering drainage biochemical reactor, process system is simple to reach, convenient management, sewage treating efficiency height, effluent quality is good, construction costs is low purpose.

For realizing purpose of the present invention, according to design, the housing of pressure type membrane filtering drainage biochemical reactor of the present invention is a seal and pressure bearing formula tank structure, makes the certain interior pressure of generation in the reactor under intake pressure and the acting in conjunction of aeration pressure.In reactor, be provided with the membrane filtering drainage device, necessary settling tank of traditional activated sludge process and mud return-flow system have been substituted, in reactor under the pressure effect, the membrane filtration module that biochemical good sewage is crossed on the hydathode through film filters the back discharge, active sludge in the water then all is retained in the reactor, activated sludge concentration in the reactor is increased substantially, thereby sewage treating efficiency also is greatly improved thereupon.

In order to further specify implementation detail of the present invention, provide most preferred embodiment of the present invention below in conjunction with accompanying drawing.

Accompanying drawing 1 is a pressure type membrane filtering drainage biochemical reactor.

Accompanying drawing 2 is the membrane filtration module structural map of membrane filtering drainage device.

Shown in accompanying drawing 1, accompanying drawing 2, the housing 1 of pressure type membrane filtering drainage biochemical reactor of the present invention is airtight pressure-bearing type tank structure, reducing valve 2, pressure maintaining valve 3, pressure transmitter 5 and water inlet pipe 8 and shore pipe 9 are installed on it, in reactor, be provided with water level sensor 4 and membrane filtering drainage device 6, reactor bottom is provided with aerating system 7, and the top is provided with into water water distributor 16.Many groups membrane filtration module 10 that membrane filtering drainage device 6 is made by the micro-pore-film filtration material is fixed in that ring-type is catchmented the membrane filtering drainage system that constitutes on the water shoot 11 and the automatic backwash system of the membrane filtration module 10 that is made of backwashing pump 12, electrically operated valve 13, electrically operated valve 14, water level sensor 4 and housing 15 forms.Wherein membrane filtration module 10 is to be placed in percentage of open area greater than also using lock ring 19 with its sealing and fixing on the 50% tubular support frame 18 with the membrane filtration bag 17 that the micro-pore-film filtration material is made.Membrane filtration module 10 tops are that union 20 is used for that membrane filtration module 10 is fixed in ring-type and catchments on the water shoot 11.

Implement the present invention, sewage is entered equably from the top by ring-type water distributor 16 by water inlet pipe 8 and carries out biochemical reaction in the reactor, under intake pressure and the acting in conjunction of aeration pressure, make the certain interior pressure of generation in the reactor, under interior pressure pressure effect, biochemical good sewage is discharged after the membrane module on the membrane filtering drainage device 6 10 filters, the water of discharging is as clear as crystal, the then whole tunicle filter bags 17 of active sludge in the water are retained in the biochemical reactor, the interior activated sludge concentration of reactor is increased substantially, and biochemical efficiency also is improved thereupon significantly.The active sludge flco thing that is adsorbed in membrane filtration bag 17 surfaces behind the operation certain hour is more and more, the filtered water flux of membrane filtration bag 17 is progressively reduced, cause the drainage efficiency reduction of membrane filtering drainage device 6 and the water level in the biochemical reactor is raise, after waiting to reach warning water level, water level sensor 4 arrives housing 15 with message feedback at once, 15 instructions of housing intake pump stops into water, open the interior pressure that reducing valve 2 makes reactor and be kept to zero, close electrically operated valve 14, open electrically operated

valve

13,12 pairs of membrane filtration bags of startup backwashing pump 17 carry out back flushing is recovered its filtered water flux.The pressure maintaining valve 3 that is in operation is in running order all the time, makes and presses total force value that keeps setting in the reactor, works under standard atmosphere pressure to guarantee membrane filtering drainage device 6.Press to surpass set(ting)value in case pressure maintaining valve 3 goes wrong and makes then pressure transmitter 5 with message feedback to housing 15, open reducing valve 2 and press in making and be kept to zero back pressure maintaining valve 3 is keeped in repair.

The present invention is owing to combine activated sludge process with membrane separation technique, process system is fairly simple, management is got up also very convenient, processing efficiency is increased substantially reduced construction costs, and through membrane filtering drainage, effluent quality can be used as industrial reuse water fully, and economic benefit and social benefit are very remarkable.

Claims

1. pressure type membrane filtering drainage biochemical reactor, the housing 1 that it is characterized in that said membrane filtering drainage biochemical reactor is seal and pressure bearing formula tank structure, reducing valve 2, pressure maintaining valve 3, pressure transmitter 5, water inlet pipe 8 and shore pipe 9 are installed on it, in reactor, are provided with membrane filtering drainage device 6, water inlet water distributor 16, water level sensor 4 and aerating system 7.

2. pressure type membrane filtering drainage biochemical reactor according to claim 1, it is characterized in that said membrane filtering drainage device 6, be fixed in by many groups membrane filtration module 10 made from microporous membrane material that ring-type is catchmented the membrane filtering drainage system that constitutes on the water shoot 11 and the automatic backwash system of the membrane filtration module 10 that is made of backwashing pump 12, electrically operated valve 13, electrically operated valve 14, housing 15, water level sensor 4 forms.

3. as pressure type membrane filtering drainage biochemical reactor as described in the claim 1,2, it is characterized in that the membrane filtration module 10 on the said membrane filtering drainage device 6 is to be placed in percentage of open area greater than on 50% the tubular support frame 18 and with lock ring 19 its sealing and fixing being constituted with the membrane filtration bag 17 that the micro-pore-film filtration material is made, the top of membrane filtration module 10 is union 20, is used for that membrane filtration module 10 is fixed in ring-type and catchments on the water shoot 11.