CN110102109A - A kind of small towns sewage treatment unit - Google Patents

Abstract

The invention discloses a township domestic sewage treatment device, which comprises a plurality of coarse filtration equipment and two transfer pools; the coarse filtration equipment comprises a tank body made of stainless steel, the tank body is arranged horizontally, and the tank body The right side is processed with a settling tank, the depth of the settling tank is greater than the depth of the tank body, a water retaining plate is welded inside the settling tank, an overflow tank is formed on the right side of the water retaining plate, and the The front and rear end faces of the tank body are welded with water pipes communicating with the overflow tank, the height of the water pipes is located in the upper half of the height of the sedimentation tank, and the height of the water pipes is lower than that of the water retaining plate. The height of the upper end, a water inlet pipe for entering sewage is inserted on the left side of the tank body, a filter is installed on the right side of the water inlet pipe, and an overflow pipe is welded at the right side of the sedimentation tank; this product can In the primary treatment of sewage, the filter screen can be cleaned without stopping the machine.

Description

A township domestic sewage treatment device

technical field

The invention relates to a township domestic sewage treatment device.

Background technique

Municipal sewage (municipal sewage, municipal waste water) is a general term for the sewage discharged into the urban sewage system. In combined sewer systems, production wastewater and retained stormwater are also included.

Urban sewage mainly includes domestic sewage and industrial sewage, collected by the urban drainage pipe network and transported to sewage treatment plants for treatment.

The urban sewage treatment process generally determines the degree of sewage treatment and the corresponding treatment process according to the utilization or discharge of urban sewage and the natural purification ability of the water body. Whether the treated sewage is used for industry, agriculture or recharge to supplement groundwater, it must meet the relevant water quality standards issued by the state.

Modern sewage treatment technology can be divided into primary, secondary and tertiary treatment processes according to the degree of treatment. Primary sewage treatment applies physical methods, such as sieving, sedimentation, etc., to remove undissolved suspended solids and floating substances in sewage. The secondary treatment of sewage is mainly the application of biological treatment methods, that is, the process of material transformation through the metabolism of microorganisms, to oxidize and degrade various complex organic substances in sewage into simple substances. Biological treatment has certain requirements on sewage water quality, water temperature, dissolved oxygen in water, pH value, etc. The tertiary treatment of sewage is based on the primary and secondary treatment, using coagulation, filtration, ion exchange, reverse osmosis and other physical and chemical methods to remove insoluble organic matter, phosphorus, nitrogen and other nutrients in sewage. The composition of pollutants in sewage is very complex, and it often requires a combination of the above methods to meet the treatment requirements.

The primary treatment of sewage is pretreatment, and the secondary treatment is the main body. The treated sewage can generally meet the discharge standard. The tertiary treatment is advanced treatment, the effluent quality is better, even can meet the drinking water quality standard, but the treatment cost is high, except in some countries and regions that are extremely short of water, it is rarely used. At present, many cities in our country are planning to build and expand secondary sewage treatment plants to solve the increasingly serious water pollution problem.

The first-level sewage treatment is mainly to remove large impurities in the sewage to facilitate subsequent treatment. However, in the existing technology, the filter method of the screen is used, and the screen needs to be cleaned frequently, and the machine needs to be shut down every time the screen is cleaned. operation, resulting in slower processing efficiency.

Based on the above problems, we designed a township domestic sewage treatment device that can clean the filter screen without shutting down during the primary treatment of sewage.

Contents of the invention

The technical problem to be solved by the present invention is to provide a township domestic sewage treatment device that can clean the filter screen without shutting down the sewage during the primary sewage treatment.

The present invention is achieved through the following technical solutions:

A township domestic sewage treatment device, including a plurality of coarse filtration equipment, and two transfer tanks;

The coarse filtration equipment includes a tank made of stainless steel, the tank is arranged horizontally, a sedimentation tank is processed on the right side of the tank, and the depth of the sedimentation tank is greater than the depth of the tank. There is a water retaining plate welded inside the tank, and an overflow tank is formed on the right side of the water retaining plate. The sewage overflowing from the settling tank enters the overflow tank after crossing the water retaining plate. The front and rear end faces are welded with water pipes communicating with the overflow tank, the height of the water pipes is located in the upper half of the height of the sedimentation tank, and the height of the water pipes is lower than the height of the upper end of the water retaining plate, A water inlet pipe for entering sewage is inserted on the left side of the tank body, a filter is installed on the right side of the water inlet pipe, and an overflow pipe is welded at the right side of the sedimentation tank. The height of the overflow pipe is higher than the height of the upper end of the water retaining rod;

The filter includes an end cap, a first end cap and a filter net, the filter net is cylindrical, the filter net is welded between the end cap and the first end cap, and the end cap is connected to the inlet A flange is installed between the water pipes, and a cleaning pipe is welded to the outer wall of the first end cover, the cleaning pipe is arranged vertically, and the cleaning pipe extends upward to the outside of the tank body;

It also includes a conveying pipe, a plurality of branch pipes corresponding to the overflow pipe are welded at the outer wall of the conveying pipe, a first flange is connected between the overflow pipe and the branch pipe, and the conveying pipe The two ends are bent and connected to the transfer pool;

When two coarse filtration devices are combined adjacently, a second flange is connected between the two water pipes, and the water pipe matched with the outermost coarse filtration device is inserted into the transfer tank;

A bracket is welded at the bottom of the tank body, and the lower end surface of the bracket is flush with the lower end surface of the sedimentation tank.

Preferably, a sludge tank is installed on the left side of the water retaining plate in the settling tank, the sludge grass can be taken out upwards, and the purpose of the sludge tank is to collect the sludge settled in the settling tank , when you need to clean the sludge, you only need to take out the sludge tank directly through the lifting device, clean it after taking it out, and put it back after cleaning. The operation is simple and convenient, and there is no need to stop the machine when sewage is being processed , can be operated to avoid delaying the steps of sewage filtration.

Preferably, pull rods are welded at the inner front and rear end faces of the sludge tank, and the upper ends of the pull rods are bent outward to form ears, and the ears have hanging holes. The end face is provided with guide grooves for matching the ears.

Preferably, the filter screen is a steel wire mesh with a wire diameter of 2 mm to 4 mm and a mesh size of M×M, where M=2 to 6 mm.

Preferably, a reinforcement cage is welded on the inner side of the filter screen, the reinforcement cage is welded between the end cover and the first end cover, the reinforcement cage includes a plurality of rings, and the reinforcement cage includes a plurality of rings. A plurality of connecting rods are welded between the circular rings, and the circular rings and the connecting rods are all made of rebar with a diameter of 8 mm to 12 mm.

Preferably, the transfer tanks are made of stainless steel, and each of the transfer tanks has a volume of 1000-5000L.

This product is handled as follows:

1) The sewage enters the filter through the water inlet pipe. The filter adopts a cylindrical filter. The impurities in the sewage are stored inside the filter, while the sewage passes through the filter and is discharged to the outside, located in the filter. The blocked garbage is flushed into the first end cover, and the garbage in the first end cover can be cleaned directly through the cleaning pipe without stopping the operation;

2) After the sewage passes through the filter screen, the large impurities and garbage contained in it are filtered out, and then enters the sedimentation tank, maintaining a small inflow flow, so that the water level of the sewage entering the sedimentation tank rises, and The sludge in the sewage settles, and the topmost sewage overflows through the baffle and enters the overflow tank, and then connects through the water pipe, and transports the sewage to the transfer tank through the water pipe;

3) The sewage entering the transfer tank is sent to the secondary sewage treatment equipment by pumping.

The beneficial effects of the present invention are: in the actual application of this product, the sewage can be filtered through the filter, and the garbage stored in the filter can be cleaned directly through the vertically arranged cleaning pipe, without shutting down the operation, and the cleaning is more efficient. It is labor-saving and safe. At the same time, this product can also carry out sedimentation operation on sewage. Through a small influent flow, water can be precipitated in the sedimentation tank, reducing sludge in sewage, relieving the pressure of subsequent sewage treatment, and providing greater Convenience, the product has simple structure, low cost, convenient layout, and is suitable for popularization and use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the top view of the present invention;

Fig. 2 is the top view of coarse filtration equipment;

Fig. 3 is the front view of coarse filtration equipment;

Fig. 4 is the top view of filter;

Figure 5 is a front view of the reinforcement cage.

Detailed ways

All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

In describing the present invention, it is to be understood that the terms "one end", "the other end", "outer side", "upper", "inner side", "horizontal", "coaxial", "central", "end ", "length", "outer end" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In addition, in the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, terms such as "setting", "socketing", "connecting", "through", and "inserting" should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachable connection, or integrated; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction of two components relationship, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

A township domestic sewage treatment device as shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, including a plurality of coarse filtration equipment 1, and two transfer pools 2;

Described coarse filtration equipment 1 comprises a tank body 101 of stainless steel material, and tank body adopts stainless steel plate to weld and form, and the wall thickness of tank body is 8mm, and described tank body 101 is horizontally arranged, and the right side of described tank body 101 is machined There is a sedimentation tank 102, the depth of the sedimentation tank 102 is greater than the depth of the tank body 101, a water retaining plate 103 is welded inside the sedimentation tank 102, and an overflow tank 104 is formed on the right side of the water retaining plate 103 The sewage overflowing from the settling tank 102 enters the overflow tank 104 after crossing the water retaining plate 103, and the water pipes communicating with the overflow tank 104 are welded at the front and rear end faces of the tank body 101 105, the height of the water pipe 105 is located in the upper half of the height of the sedimentation tank 102, and the height of the water pipe 105 is lower than the height of the upper end of the water retaining plate 103, and a Enter the water inlet pipe 106 that sewage is used, the right side of described water inlet pipe 106 is equipped with a filter 3, is welded with overflow pipe 107 at the right side position of described sedimentation tank 102, and the height of described overflow pipe 107 is higher than described The height of the upper end of the water retaining rod 103;

The filter 3 includes an end cap 301, a first end cap 302 and a filter screen 303, the filter screen 303 is cylindrical, and the filter screen 303 is welded between the end cap 301 and the first end cap 302, A flange 311 is assembled between the end cover 301 and the water inlet pipe 106, and a cleaning pipe 312 is welded to the outer wall of the first end cover 302, the cleaning pipe 312 is vertically arranged, and the cleaning pipe 312 is upward extending to the outside of the tank body 101;

It also includes a delivery pipe 4, the outer wall of the delivery pipe 4 is welded with a plurality of branch pipes 401 corresponding to the overflow pipe 107, and a first flange is connected between the overflow pipe 107 and the branch pipe 401 411. Both ends of the delivery pipe 4 are bent and connected to the transfer tank 2;

When two coarse filtration devices 1 are combined adjacently, a second flange 155 is connected between the two water pipes 105 , and the water pipe 105 matched with the outermost coarse filtration device 1 is inserted into the transfer tank 2 Inside;

A bracket 121 is welded at the bottom of the tank body 101, and the lower end surface of the bracket 121 is flush with the lower end surface of the sedimentation tank.

In a preferred embodiment of the present invention, a sludge tank 5 is installed in the settling tank 102 on the left side of the water retaining plate 103, the sludge grass 5 can be taken out upwards, and the sludge tank The purpose of the design is to collect the sludge settled in the sedimentation tank. When the sludge needs to be cleaned, it is only necessary to take out the sludge tank directly through the lifting device, clean it after taking it out, and put it back after cleaning. The operation is simple It is convenient, and it can be operated without shutting down when the sewage is being processed, so as to avoid delaying the steps of sewage filtration.

In a preferred embodiment of the present invention, pull rods 511 are welded at the inner front and rear end faces of the sludge tank 5, and the upper ends of the pull rods 511 are bent outward to form ear parts 512, and the ear parts 512 have The suspension hole 513 is provided with a guide groove 122 for fitting the ear portion 512 at the front and rear end faces of the settling tank 102 .

In a preferred embodiment of the present invention, the filter screen 303 is a steel wire mesh with a wire diameter of 3mm and a mesh size of M×M, where M=4mm.

In a preferred embodiment of the present invention, a reinforcing cage 6 is welded inside the filter screen 303, and the reinforcing cage 6 is welded between the end cover 301 and the first end cover 302, and the reinforcing bar Cage 6 comprises a plurality of circular rings 611, and a plurality of connecting rods 612 are welded between a plurality of said circular rings 611, and said circular rings and connecting rods all adopt threaded steel with a diameter of 8 mm to 12 mm, and one end of the connecting rods 612 It is welded with the end cap, and the other end is welded with the first end cap.

In a preferred embodiment of the present invention, the transfer pool 2 is made of stainless steel, and the volume of each transfer pool is 3000L.

The above is only a specific implementation of the present invention, but the scope of protection of the present invention is not limited thereto, and any changes or replacements that do not come to mind through creative work shall be covered within the scope of protection of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope defined in the claims.

Claims (6)

1. a kind of small towns sewage treatment unit, it is characterised in that: including multiple coarse filtration equipment and two transfer ponds；

The coarse filtration equipment includes the groove body of a stainless steel material, and the groove body is laterally arranged, the right side processing of the groove body There is precipitation tank, the depth of the precipitation tank is greater than the depth of the groove body, has a water fender in the interior welds of the precipitation tank, Overflow groove is formed on the right side of the water fender, the sewage overflowed from the precipitation tank enters to described overflow after crossing water fender In sink, the water pipe communicated with the overflow groove, the height position of the water pipe are welded at the front and rear end of the groove body In the top half of the precipitating groove height, and the height of the water pipe is lower than the upper end level of the water fender, described The water inlet pipe that the left side of groove body enters sewage inserted with one is equipped with a filter on the right side of the water inlet pipe, described heavy Overflow pipe is welded at the right positions of shallow lake slot, the height of the overflow pipe is higher than the upper end level of the water-stop rod；

The filter includes end cap, first end cover and filter screen, and the filter screen is tubular, and the filter screen is welded on described Between end cap and first end cover, it is equipped with flange between the end cap and the water inlet pipe, is welded at the outer wall of the first end cover It is connected to a cleaning pipe, the cleaning pipe is vertically arranged, and the cleaning pipe extends upwardly to the outside of the groove body；

Further include a delivery pipe, the branched pipe of the more correspondence overflow pipes is welded at the outer wall of the delivery pipe, it is described It is connected with first flange between overflow pipe and the branched pipe, the transfer pond is connected to after the bending two ends of the delivery pipe；

When the adjacent combination of two coarse filtration equipment, second flange, institute on the outermost side are connected between two water pipes Water pipe joined together by coarse filtration equipment is stated to be inserted into the transfer pond；

It is welded with bracket in the bottom of the groove body, the lower end surface of the bracket is flushed with the lower end surface of the precipitation tank.

2. small towns sewage treatment unit according to claim 1, it is characterised in that: in the precipitation tank, be located at A sludge sump is equipped at the leftward position of the water fender, the sludge grass can take out upwards.

3. small towns sewage treatment unit according to claim 2, it is characterised in that: the sludge sump it is interior forward and backward Endface is welded with pull rod, ear is formed after the outside lateral bend in the upper end of the pull rod, the ear has hanging hole, in institute State the guide groove for being provided at the front and rear end of precipitation tank and agreeing with the ear.

4. small towns sewage treatment unit according to claim 1, it is characterised in that: the filter screen uses steel wire Net, string diameter are 2mm ~ 4mm, and mesh size is M × M, M=2 ~ 6mm.

5. small towns sewage treatment unit according to claim 1, it is characterised in that: welded in the inside of the filter screen It is connected to a steel reinforcement cage, the steel reinforcement cage is welded between the end cap and the first end cover, and the steel reinforcement cage includes multiple circles Ring, is welded with more connecting rods between multiple annulus, and the annulus and connecting rod are all made of the screw thread that diameter is 8mm ~ 12mm Steel.

6. small towns sewage treatment unit according to claim 1, it is characterised in that: the transfer pond is stainless steel Matter, the volume in each transfer pond are 1000 ~ 5000L.