KR20000003714U - Submerged membrane separation activated sludge process - Google Patents

Abstract

The present invention is an immersion membrane separation activated sludge process for wastewater treatment, which combines MEMBRANE (hollow fiber membrane) with biological treatment, removes organic matter by high MLSS during biological treatment, and solids by MEMBRANE (hollow fiber membrane) It is a device that efficiently performs solid-liquid separation of E. coli, etc., by directly immersing MEMBRANE (hollow fiber membrane) in water and operating the filtration method by suction filtration method. It is the latest method to keep the water stable and to maintain the quality of treated water.

Description

Submerged membrane separation activated sludge process

Immersion type membrane separation activated sludge method is aimed at securing stable water quality with less required site (area), smooth maintenance and high treatment efficiency compared to the existing standard activated sludge method.

The present invention relates to an immersion membrane separation activated sludge process that can secure stable water quality with small required area, smooth maintenance, and high treatment efficiency.

In general, the standard activated sludge method, which applies aerobic microorganisms to eat organic substances such as sugars and proteins and decomposes them into water and carbon dioxide as metabolites, is widely used as a wastewater treatment method to prevent environmental pollution. The structure sends raw water stored in the adjustment tank to the aeration tank and supplies oxygen to the aerobic microorganism by aeration at this speed to promote the activity, oxidizes and decomposes BOD components. To discharge it.

However, there are many difficulties in maintenance. The biggest of them is bulking caused by filamentous fungi. When bulking occurs, the sludge rises, so that the sedimentation tank cannot sediment segregation due to specific gravity difference and is mixed and discharged into the effluent.

The present invention is to solve the problems as described above, the flow chart consisting of flow control tank, membrane separation tank (1, 2), disinfection tank, drainage tank in order to immersion membrane separation activated sludge method (Fig. 2), and existing sedimentation Suction filtration MEMBRANE UNIT (FIG. 3) deposited in the membrane separation tanks (1, 2) and membrane separation tank (2) installed in place of the separation tank and the activated sludge aeration tank (Fig. 3), and the installation area is reduced as described above. It can solve the bulking problem and ensure stable water quality (clean water) with smooth maintenance and high treatment efficiency.

Drawing 1

Top view of immersion membrane separation activated sludge process

Drawing 2

Flow Sheet of Submerged Membrane Activated Sludge Process

Drawing 3

Detailed drawing of MEMBRANE UNIT immersed in membrane separation vessel

(Description of main parts of drawing)

Ⓐ FIXED BAR SCREEN ⓑ AUTO BAR SCREEN

Ⓒ CONTROL PUMP ⓓ SIEVE SCREEN

Ⓔ MEMBRANE UNIT ⓕ SURGE TANK

Ⓖ PRESSURE GAUGE (SWITCH) ⓗ SUCTION PUMP

Ⓘ FLOW METER ⓙ CHEMICAL PUMP

Ⓚ EFFLUENT PUMP ⓛ FLOW METER

Ⓜ SLUDGE FEED PUMP ⓝ BACK WASHING TANK

(SPRAY PUMP)

Ⓞ BLOWER ⓟ AIR LIFT PUMP

Referring to the process of another immersion membrane separation activated sludge method of the present invention in detail based on the accompanying drawings as follows.

1 is a plan view (LOW PLAN) of the immersion membrane separation activated sludge process, the flow rate adjustment tank, the membrane separation tank (1, 2), sterilization tank, drainage tank in order to form a sludge concentration tank.

2 is a flow chart of the immersion membrane separation activated sludge method, which flows into the flow control tank through SCREEN ⓐ, ⓑ, which removes contaminants by introducing sewage, and flows into SIEVE-SCREENⓓ by CONTROL PUMPⓒ. Remove and enter into membrane separation tank. In addition, the sewage flowed into the membrane separation tank is suction filtered through SUMBTION PUMPⓗ through MEMBRANE UNITⓔ, and the filtered treated water is sterilized in the disinfection tank and discharged from the drain tank. Check the instantaneous flow rate by using the flow filtration (FLOW METER ⓘ) and adjust the suction filtration constant to prevent damage to the MEMBRANE (hollow fiber membrane). BACK WASHING TANKⓝ is a backwash tank used for backwashing with a valve operation to prevent clogging of MEMBRANE during suction filtration in membrane separation tank. SLUDGE PUMPⓜ removes bubbles from membrane separation tank and transfers excess sludge to sludge concentration tank. BLOWERⓞ is operated by 24 hour timer.

As described above, when the sewage treatment is performed by the immersion membrane separation activated sludge method according to the present invention, the installation area of the treatment facility is reduced, and the discharge water quality can be improved by smooth maintenance and high treatment efficiency.

Claims (2)

In the method of treating the wastewater for smooth maintenance and stable water quality, A flow chart (Fig. 1, Fig. 2) consisting of flow rate adjusting tanks, membrane separation tanks 1, 2, sterilization tanks, and drain tanks; A membrane separation tank (1, 2) installed in place of the existing sedimentation separation tank and the activated sludge aeration tank; MEMBRANE UNIT (Fig. 3) which deposits and filters by suction in the membrane separation tank 2; Immersion type membrane separation activated sludge method using MEMBRANE (hollow fiber membrane) as the treatment method. The method of claim 1, The MEMBRANE (hollow fiber membrane) was ONE TOUCH HOSE. ONE TOUCH FITTING, MEMBRANE UNIT manufactured using SUS PIPE (Fig. 3).