CN206372701U - A kind of middle-size and small-size flat ceramic membrane module - Google Patents

Abstract

The utility model discloses a kind of middle-size and small-size flat ceramic membrane module, it includes film group component, diaphragm unit and aerator, film group component is tower structure or thermoplastic plate overall structure, diaphragm unit includes the flat board diaphragm that some block gaps are arranged in framework ceramic diaphragm, diaphragm unit includes spaced flat board diaphragm, upper plug head and lower end cap, film group member lower is provided with collector pipe, apopore is set on lower end cap, outlet pipe is connected with apopore, outlet pipe is connected by snap joint with connecting tube, connecting tube is connected by snap joint with collector pipe, collector pipe one end is provided with loose joint, L-shaped formula left support plate is vertically disposed with the left of film group component, the film group right member side lower end is provided with right support plate, film group right member side face upper and lower side is movably set with limiting plate respectively.The features such as it has that high mechanical strength, bearing capacity are strong, porosity distribution is uniform, water flux is big, resistance tocrocking is good, is readily cleaned installation, service life is long.

Description

A small and medium-sized flat ceramic membrane module

technical field

The utility model relates to a water treatment device, in particular to a small and medium flat ceramic membrane assembly.

Background technique

As a new type of high-efficiency sewage treatment technology, ceramic flat membrane bioreactor has become an indispensable treatment technology for domestic sewage, especially industrial wastewater and extreme environmental wastewater treatment.

Traditional sewage treatment technology can be divided into primary, secondary and tertiary treatment according to the degree of treatment.

Primary treatment mainly removes suspended solid pollutants in sewage, and most physical treatment methods can only meet the requirements of primary treatment. After primary treatment, BOD can generally be removed by about 30%, which does not meet the discharge standard. Primary treatment belongs to the pretreatment of secondary treatment. The secondary treatment mainly removes colloidal and dissolved organic pollutants (BOD, COD substances) in the sewage, and the removal rate can reach more than 90%, so that the organic pollutants can meet the discharge standards. Tertiary treatment, further treatment of refractory organic matter, nitrogen and phosphorus and other thermoplastic inorganic substances that can lead to eutrophication of water bodies. The main methods are biological nitrogen and phosphorus removal, coagulation sedimentation, sand filtration, activated carbon adsorption, ion exchange and electroosmotic analysis. The traditional process has the following disadvantages: ①COD oxidation and nitrification consume a lot of energy, occupy a large area, and have high investment costs; ②Denitrification and phosphorus bioaccumulation both need to consume COD; ③The amount of residual sludge is large; ④Energy consumption causes a large amount of Carbon dioxide is released and enters the atmosphere.

At present, the membrane bioreactor (MBR) is widely used in membrane bioreactors. MBR has the following main characteristics: high treatment efficiency, good effluent quality; compact equipment, small footprint; easy to realize automatic control, simple operation and management. However, organic membrane-bioreactors also have many deficiencies. Mainly manifested in the following aspects: 1. High membrane cost; 2. Membrane fouling is easy to occur; 3. High energy consumption: firstly, the membrane flux is small, and secondly, it is necessary to maintain sufficient oxygen transfer rate; 4. It cannot adapt to the environment with high pH, and the membrane module Frequent fouling in the middle and difficult backwashing must be replaced, which is difficult to replace. It has a short service life and cannot be regenerated. Now the market has been gradually used: high strength, large water flux, long life, high treatment efficiency, good water quality; compact equipment, small footprint, low unit energy consumption, low operation and maintenance costs; easy to realize automatic control, simple operation and management The flat ceramic membrane replaces the organic membrane as the core component of the MBR, and has achieved good results. However, because the flat ceramic membrane needs to be packaged with a plug and needs to be protected from external impact, it must be assembled in a bracket, which makes installation and replacement difficult.

Utility model content

In order to solve the problems of unstable component structure, inconvenient installation and replacement of diaphragms, and poor sealing of plugs in ceramic membrane bioreactors in the prior art, the utility model provides small and medium-sized flat ceramic membrane components.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the small and medium-sized flat ceramic membrane module includes a membrane component, a membrane component and an aeration device, and the membrane component is a frame structure or a thermoplastic plate overall structure , the diaphragm assembly includes several flat diaphragm upper plugs and lower plugs arranged at intervals in the frame. The upper and lower ends of the sheet, the lower plug is sealed with the lower port of the hollow hole on the flat diaphragm, and the lower plug is provided with a water outlet hole, and a water outlet pipe is connected to the water outlet hole, and the water outlet pipe passes through the quick connector Connected with the connecting pipe, the connecting pipe is connected with the water collecting pipe through a quick joint, one end of the water collecting pipe is provided with a joint, the left side of the membrane group member is respectively provided with an L-shaped left support plate up and down, and the right side of the membrane group member The lower end of the surface is provided with a right support plate, and the upper and lower ends of the right side of the membrane component are respectively movable with limiting plates.

The utility model changes the installation method of the flat diaphragm, and horizontally enters the flat diaphragm from the right side of the membrane group member to the left side, which is more convenient for the installation of the flat diaphragm, taking out, replacing or cleaning, and the upper and lower sides of the right side of the diaphragm group member At the end, the flat diaphragm is fixed on the left support plate and the right support plate of the membrane group member through the bolt and the limit plate, and the joint provided at one end of the water collection pipe can be connected with the water inlet pipe on the aeration device.

The flat diaphragm is a hollow ceramic piece with hollow holes, and the flat diaphragm is combined on a membrane group member at intervals. The filtration area of a single flat diaphragm is 2 square meters, 3 square meters, 5 square meters, and 10 square meters. , 20 square meters and other specifications, flat-plate diaphragms with a width of 110-200mm, a thickness of 3-6mm, and a height of 350-600mm are arranged at intervals, (the above specifications are superimposed to form different specifications components, up to 15 layers superimposed), the membrane components are assembled by connecting and assembling stainless steel and other metal material sheet metal parts through bolts; The upper end of each hollow ceramic flat plate diaphragm on the diaphragm assembly is provided with an upper plug, and the lower end is provided with a lower plug. There is a water outlet hole on the channel of the lower plug, and the water outlet hole is connected with an outlet pipe. Each outlet pipe corresponds to the position of the water inlet on the water collection pipe and is connected with a quick connector and a connecting pipe to pump out the filtered water (negative pressure 0.01-0.05 Mpa) is discharged through the water collection pipe; when the flux drops or the pressure rises, it can be backwashed online with high-pressure filtered air or filtered water through the water collection pipe. The backwashing pressure can be within 1Mpa and is not limited by the number of backwashing times. And when the online washing can not restore the flux to more than 80%, the off-line acid-base washing can be used.

The core element of the utility model adopts the microporous membrane and high-purity Al2O3 composite membrane structure on the flat diaphragm, so that the diaphragm has high mechanical strength, strong pressure bearing capacity, good chemical stability, uniform porosity distribution, and large water flux. , good anti-pollution, easy to clean and regenerate, long service life, high economy, etc., solves the problems of difficult cleaning, cumbersome maintenance, repeated backwashing, frequent replacement, high environmental requirements, short service life, and easy maintenance of organic membrane elements during operation. Corrosion by acid and alkali, intolerance to organic solvents, high operating costs, large floor space, etc., will easily cause difficulties in sewage discharge, effectively improving the service life and reliability of the membrane bioreactor. And the used flat diaphragm can be recycled for other ceramic products, reducing waste. In practical applications, components can be stacked or assembled in parallel according to the needs of the site to form a larger system as a whole.

Description of drawings

Figure 1 is a schematic diagram of the main structure of the utility model,

Fig. 2 is a left view structure diagram of the utility model,

FIG. 3 is a schematic diagram of a partial cross-sectional structure along line X—X in FIG. 2 .

In the figure, 1. Membrane group member 2, water collecting pipe 3, left support plate 4, flat diaphragm 5, limit plate 6, screw rod 7, union 8, upper plug 9, lower plug 10, outlet pipe 11 , connecting pipe 12, quick connector 13, right support plate 14, outlet hole 15, tapered surface 16, hollow hole.

detailed description

As shown in Figure 1, Figure 2, and Figure 3, the small and medium-sized flat ceramic membrane module includes a membrane component 1, a membrane component and an aeration device, and the membrane component is a frame structure or a thermoplastic plate overall structure, The diaphragm assembly includes several flat diaphragms 4 arranged at intervals in the ceramic diaphragm of the frame, the diaphragm assembly includes flat diaphragms 4 arranged at intervals, an upper plug 8 and a lower plug 9, the diaphragm group The lower part of the component is provided with a water collection pipe 2, the upper and lower plugs are respectively located at the upper and lower ends of the flat diaphragm, and the lower plug and the lower port of the hollow hole 16 on the flat diaphragm are sealed and fitted with a tapered surface 15, Water outlet hole 14 is arranged on the lower plug, and water outlet pipe 10 is connected on the water outlet hole, and described water outlet pipe is connected with connecting pipe 11 by quick joint 12, and connecting pipe is connected with water collection pipe 2 by quick joint, and described water collection pipe one end is provided with Joint 7, the left side of the membrane group member is provided with an L-shaped left support plate 3 up and down, the lower end of the right side of the membrane group member is provided with a right support plate 13, and the upper and lower ends of the membrane group member on the right side are provided with a screw rod 6 and Nut activity is provided with limit plate 5. The aeration device includes aeration tubes provided with aeration holes at intervals.

When in use, the flat membrane is directly immersed in the bottom of the sewage tank and filtered by negative pressure suction. The aerated sewage enters the hollow hole in the flat membrane and flows out from the outlet hole into the outlet after being treated by the membrane. water pipe, and enter the water collection pipe through the connecting pipe.

The upper and lower parts of the membrane components are provided with corresponding connection positions. According to the demand for sewage treatment capacity, they can be combined side by side and stacked. The total filtration area of the membrane in a module bracket is 2, 3, 5, and 10 square meters. Each set of membranes One end of the sheet module is provided with a water collection pipe 2 according to different filtration diameters and flow rates, and each set of membrane modules is independently connected to a set of aeration modules at the bottom, which facilitates the operation of increasing or decreasing the membrane modules.

In order to further improve the stability of the membrane components, an independent base needs to be set at the bottom of each set of membrane components. The upper end of the base is correspondingly connected and fixed with the lower part of the membrane module.

When installing the flat diaphragm, remove the limit plate at the upper end first, and insert the flat diaphragm one by one on the left support plate and the right support plate. After the flat diaphragm is installed, there is a small gap to prevent the flat diaphragm from being impacted by water. Rigid cracks. It can effectively protect the diaphragm and prevent damage to the diaphragm caused by impact.

The pore diameters of the micropores on the flat membrane 4 are 0.01 μm, 0.05 μm, 0.1 μm, 1 μm, 2 μm, and 5 μm, and the membrane flux is from 0.03 to 8 m3/(㎡H). This can adapt to places with different requirements. Further improve the efficiency of sewage treatment, thereby saving energy and space.

The height of the flat diaphragm is 350-600mm; the flat diaphragm is arranged in parallel, and the distance between two adjacent flat diaphragms is 7.5-11mm; the height of the aeration tube is 145-150mm, which is convenient for the aeration gas to disperse upwards in a scattering shape onto the diaphragm. The distance between the bottom of the aeration component and the bottom of the membrane support is 180mm. Each aeration component is equipped with multiple 0.5-inch or 1-inch aeration tubes. There are aeration holes on the aeration tube. The diameter of the aeration hole is 6.2mm. There is a movable umbrella-shaped anti-cap in the center to prevent the backflow of sediment and flocs during shutdown. The number of each aeration hole corresponds to the number of diaphragms, and the flow rate of the aeration hole is 10-15m/s.

One of the materials for the above-mentioned membrane components is 304 stainless steel and other metal materials stamped or bent and assembled, and the other is cut and formed by thermoplastic plates and welded into an overall frame. This can adapt to most sewage environments, and the top of each set of membrane components is provided with 3 oppositely arranged hooks. This further facilitates the hoisting of the membrane module. The bottom aeration device is equipped with four supporting feet, and there is a 90mm gap between it and the ground, which is convenient for forklift loading and unloading components. The technology not mentioned in the utility model all refers to prior art.

The lower plug of the flat diaphragm is provided with a water outlet hole, and the water outlet hole is connected with the water outlet pipe. The water outlet pipes of each set of diaphragm components are concentrated on one side, and the water outlets are staggered up and down. Two rows are arranged on the side wall of the water collection pipe. The staggered water inlets correspond to each other, and quick connectors are installed on the outlet pipe and the water inlet, and are connected by nylon flexible connecting pipes, which is convenient for quick installation and removal.

The diameter of the inner hole of the water collection pipe is set according to more than 1.2 times the flux of the flat diaphragm. One end is fixed with hot-melt cap glue, and the other end is connected with union or external thread. The water collection pipe is made of PPR hot-melt pipe or 304 stainless steel pipe. There are two rows of threaded holes staggered at the bottom of the pipe wall. The PE connecting pipe seals the ceramic diaphragm.

The flat diaphragm is extruded with high-purity alumina as the carrier, with dimensions of 110mm in length, 150mm in thickness, 4-6mm in thickness, and 350-600mm in height. The pore diameter of the upper micropore is 0.5-5μm, the middle is coated with a transition layer, and the outer surface is coated with a 0.01-0.2um microporous membrane, so that the membrane pore diameter can range from 0.01um to 5um, and the pore distribution is narrow, and the membrane flux is 0.03-3m3 /( ㎡ H); The left and right ends of the flat diaphragm are provided with plugs made of materials such as ABS or PPS or injection molded with ceramic slurry. The upper and lower plugs are sealed with the flat diaphragm, and the lower plug is Long strip shape, easy to connect and assemble. The end surface of the flat diaphragm is installed in the groove at the bottom of the concave shape. The width of the notch is about less than or equal to the width of the diaphragm, and the length is about less than or equal to the length of the diaphragm.

The overall height of the membrane components is 350-600mm; the flat diaphragms are arranged in parallel. The height of the aeration layer is 140-150mm, the upper part is connected with the ceramic membrane module, and the lower part is equipped with four horizontal stainless steel plates, which can be directly placed on the bottom of the sewage tank and can be fixed on the ground. There are a number of aeration tubes with an outer diameter of 0.5 inch or 1 inch in the middle. There are several aeration holes with a diameter of 6.2mm on the upper surface of each aeration tube. The flow rate of the aeration holes is 10-15m/s. There is an umbrella-shaped anti-reflux cap, and the distance from the center of the aeration tube to the bottom of the ceramic membrane is 180mm. The air flow forms an upward scattering shape in the middle of the diversion plate, so that the sewage flows upward from the bottom of the aeration component to the water collection pipe, which can fully mix the steam and water and make the sewage form cross-flow filtration with the membrane surface.

Claims (2)

1. A small and medium-sized flat ceramic membrane module, which includes a membrane component (1), a membrane component and an aeration device, the membrane component is a frame structure or a thermoplastic plate overall structure, and the membrane component includes A number of flat diaphragms (4), upper plugs (8) and lower plugs (9) are arranged in the frame at intervals, the lower part of the membrane group is provided with a water collection pipe (2), the upper plug and the lower The plugs are respectively located at the upper and lower ends of the flat diaphragm, and the feature is that: the lower port of the lower plug and the hollow hole (16) on the flat diaphragm is a tapered surface (15) for sealing fit, and the lower plug is provided with a water outlet (10), a water outlet pipe (10) is connected to the water outlet hole, the water outlet pipe is connected to the connecting pipe (11) through a quick joint (12), the connecting pipe is connected to the water collecting pipe through a quick joint, and one end of the water collecting pipe is provided with A joint (7), the left side of the membrane component is provided with an L-shaped left support plate (3) respectively, the lower end of the right side of the membrane component is provided with a right support plate (13), the right side of the membrane component is The upper and lower ends of the side are respectively movable to be provided with limiting plates (5). 2. A small and medium-sized flat ceramic membrane module according to claim 1, characterized in that: the pore size of the micropores in the flat diaphragm (4) is 0.5-5 μm, the middle is coated with a transition layer, and the outer surface is coated with 0.01~ The 0.2um microporous membrane enables the membrane pore size to range from 0.01um to 5um.