CN216039160U - Sewage treatment system - Google Patents

Abstract

The embodiment of the application provides a sewage treatment system. This sewage treatment system includes: a primary sedimentation tank, a biochemical reaction sedimentation system and a cloth filter system; the primary sedimentation tank comprises a first secondary primary sedimentation tank and a second secondary primary sedimentation tank; the biochemical reaction sedimentation system is arranged in the first primary sedimentation tank; the cloth filter system is arranged in the second primary sedimentation tank; the water outlet of the first sub primary sedimentation tank is communicated with the water inlet of the second sub primary sedimentation tank. This application embodiment adds biochemical reaction sedimentation system and cloth filter system in original preliminary sedimentation tank, and first sub-preliminary sedimentation tank replaces biochemical reaction sedimentation tank, need not to build biochemical reaction sedimentation tank in addition, and the secondary preliminary sedimentation tank also can play the guard action to cloth filter system, can use biochemical reaction sedimentation system and cloth filter system to further handle sewage at original sewage treatment plant promptly, can improve the treatment effeciency of sewage under the condition that does not change area.

Description

Sewage treatment system

Technical Field

The application relates to the technical field of sewage treatment, particularly, this application relates to a sewage treatment system.

Background

With the development and progress of the times, the requirement on sewage treatment is higher and higher, the sewage intercepting pipe network is gradually improved, a plurality of sewage treatment plants are about to or enter a full load or overload running state, and the sewage treatment plants need to be expanded to add more efficient sewage treatment devices.

However, the location of the existing sewage treatment plant is already established and difficult to expand, and no redundant area is arranged at the peripheral geographical position of the original plant to build more efficient sewage treatment systems, so that the existing sewage treatment plant is difficult to improve the sewage treatment efficiency without changing the occupied area.

SUMMERY OF THE UTILITY MODEL

This application provides a sewage treatment system to the shortcoming of current mode for solve the current sewage treatment plant that prior art exists and be difficult to improve technical problem such as sewage treatment efficiency under the condition that does not change the area.

In a first aspect, an embodiment of the present application provides a sewage treatment system, including: a primary sedimentation tank, a biochemical reaction sedimentation system and a cloth filter system; the primary sedimentation tank comprises a first secondary primary sedimentation tank and a second secondary primary sedimentation tank;

the biochemical reaction sedimentation system is arranged in the first primary sedimentation tank;

the cloth filter system is arranged in the second primary sedimentation tank;

the water outlet of the first sub primary sedimentation tank is communicated with the water inlet of the second sub primary sedimentation tank.

Optionally, the bottom of the first primary sedimentation tank further has: a settling zone;

the water inlet of the first secondary primary sedimentation tank is arranged at the bottom of the sedimentation zone;

the water outlet of the second sub-primary sedimentation tank is arranged on a first side wall of the second sub-primary sedimentation tank, and the first side wall is positioned on one side of the cloth filter system far away from the biochemical reaction sedimentation system.

Optionally, the first secondary primary sedimentation tank further has: a first sludge discharge port; the second primary sedimentation tank further comprises: a second sludge discharge port; the sewage treatment system further comprises: a sludge dewatering system;

the first sludge discharge port is formed in the second side wall of the first sub primary sedimentation tank in the sedimentation area;

the second sludge discharge port is formed in the bottom of the second sub primary sedimentation tank between the cloth filter system and the first side wall;

the sludge dewatering system is communicated with the first sludge discharge port and the second sludge discharge port.

Optionally, the biochemical reaction precipitation system further comprises: a water distribution system and at least one loop clarifier;

the circulation clarifier is arranged in the first sub primary sedimentation tank and is spaced from the bottom of the first sub primary sedimentation tank;

the water distribution system is communicated with the sedimentation area and the circulation clarifier.

Optionally, the wastewater treatment system further comprises: a blower system; the biochemical reaction precipitation system further comprises: at least one aerator;

the air blowing system is communicated with an aerator, and the aerator is arranged on the bottom surface of the first primary sedimentation tank in the sedimentation zone.

Optionally, the wastewater treatment system further comprises: a cover body;

the cover body is arranged at the top of the primary sedimentation tank.

Optionally, the wastewater treatment system further comprises: a first deodorizing pipe and a first deodorizing means;

the first deodorization pipeline is communicated with the first deodorization device and the cloth filter system.

Optionally, the wastewater treatment system further comprises: the aeration grit chamber, a second deodorization pipeline and a second deodorization device;

the aeration grit chamber is communicated with the first secondary primary sedimentation tank;

a grid and a sand discharge device are arranged in the aeration grit chamber;

the second deodorization pipeline is communicated with the second deodorization device and the aeration grit chamber.

Optionally, the wastewater treatment system further comprises: a water distribution well and a first dosing room;

the water inlet of the water distribution well is communicated with the water outlet at one end of the aeration grit chamber, which is provided with the sand discharge device;

the first dosing room is communicated with a first dosing inlet of the water distribution well;

the water outlet of the distributing well is communicated with the water inlet of the first secondary primary sedimentation tank.

Optionally, the sewage treatment system further comprises a second dosing room;

the second dosing room is respectively communicated with a second dosing port of the water distribution well and a third dosing port of the cloth filter system.

The beneficial technological effect that sewage treatment system that this application embodiment provided brought includes: the primary sedimentation tank is divided into a first secondary primary sedimentation tank and a second secondary primary sedimentation tank, a biochemical reaction sedimentation system is arranged in the first secondary primary sedimentation tank, and the first secondary primary sedimentation tank plays a role of a biochemical reaction sedimentation tank and can purify sewage to a certain degree; the filter cloth filter system is arranged in the second sub primary sedimentation tank, the second sub primary sedimentation tank contains the filter cloth filter system, the second sub primary sedimentation tank is equivalent to the filter cloth filter, the filter cloth filter does not need to be arranged outside the primary sedimentation tank, sewage from the first sub primary sedimentation tank and the biochemical reaction sedimentation system is directly further purified in the primary sedimentation tank, the second sub primary sedimentation tank also plays a role in protecting the filter cloth filter system, the efficiency of sewage treatment is improved, the original primary sedimentation tank is reformed and utilized, the biochemical reaction sedimentation tank and the filter cloth filter do not need to be built in other sites, and the cost of sewage treatment is reduced.

Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of a sewage treatment system according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 2 at B;

fig. 4 is a schematic structural diagram of a circulation clarifier provided in an embodiment of the present application.

In the figure:

1-a sewage treatment system;

11-a primary sedimentation tank; 110-a first secondary primary sedimentation tank; 111-a second sidewall; 112-a precipitation zone; 120-second primary settling tank; 121-a first sidewall; 101-a cover body;

12-cloth filter system; 13-biochemical reaction precipitation system; 130-loop clarifier; 1301-a flow guide through hole; 1302-a swash plate; 1303-flow guide; 1304-a drain pipe; 131-an aerator;

14-a blower system;

15-a first deodorizing means;

16-an aeration grit chamber; 161-a grid; 162-a sand discharge device;

17-a second deodorizing means;

18-distributing well;

19-a first dosing chamber;

20-a second dosing room;

s-a water pipeline; JY-medicine-feeding pipeline; n-a blowdown line; f1 — first deodorizing duct; f2 — second deodorizing duct; k-gas pipeline.

Detailed Description

Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It is to be understood that the term "and/or" as used herein is intended to include all or any and all combinations of one or more of the associated listed items.

The inventor of the present application has found that:

general sewage treatment plants are all provided with a primary sedimentation tank for treating sewage. However, the existing primary sedimentation tank is difficult to meet the high requirements of sewage treatment. In the prior art, the expansion is usually carried out on the basis of the original sewage treatment plant, a biochemical reaction sedimentation tank and a cloth filter are additionally arranged, the sewage is further treated, the quality of the treated sewage is improved, and the treatment efficiency of the sewage is further improved. Therefore, the floor area of the original sewage treatment plant needs to be enlarged, and a biochemical reaction sedimentation tank and a cloth filter tank can be newly built to reach the standard of sewage treatment. However, at present, no space is reserved around a plurality of sewage treatment plants, and the expansion is difficult.

The application provides a sewage treatment system aims at solving prior art technical problem as above.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.

Referring to fig. 1, an embodiment of the present application provides a sewage treatment system 1, including: a primary sedimentation tank 11, a biochemical reaction sedimentation system 13 and a cloth filter system 12.

The primary sedimentation tank 11 includes a first sub primary sedimentation tank 110 and a second sub primary sedimentation tank 120.

The biochemical reaction sedimentation system 13 is arranged in the first primary sedimentation tank 110.

The cloth filter system 12 is arranged in the second primary sedimentation tank 120.

The water outlet of the first sub primary sedimentation tank 110 is communicated with the water inlet of the second sub primary sedimentation tank 120.

In this embodiment, the sewage treatment system 1 includes a primary sedimentation tank 11, a biochemical reaction system 13 and a cloth filter system 12, the primary sedimentation tank 11 is divided into a first secondary primary sedimentation tank 110 and a second secondary primary sedimentation tank 120, the biochemical reaction sedimentation system 13 is disposed in the first secondary primary sedimentation tank 110, and the first secondary primary sedimentation tank 110 functions as a biochemical reaction sedimentation tank and can purify sewage to a certain extent; the cloth filter system 12 is arranged in the second sub primary sedimentation tank 120, the cloth filter system 12 is contained in the second sub primary sedimentation tank 120, a cloth filter is not required to be additionally arranged outside the primary sedimentation tank 11, sewage from the first sub primary sedimentation tank 110 and the biochemical reaction sedimentation system 13 is directly further purified in the primary sedimentation tank 11, the cloth filter system 12 is protected by the second sub primary sedimentation tank 120, the sewage treatment efficiency is improved, meanwhile, the original primary sedimentation tank is reformed and utilized, a biochemical reaction sedimentation tank and a cloth filter do not need to be additionally constructed by site selection, and the sewage treatment cost is reduced.

In this embodiment, the water outlet of the biochemical reaction sedimentation system 13 is communicated with the water inlet of the cloth filter system 12, the sewage purified by the biochemical reaction sedimentation system 13 enters the cloth filter system 12 again for further purification, and the sewage is discharged after reaching the standard after treatment, and compared with the original purification system using the primary sedimentation tank 11 for purification, the purification efficiency of the biochemical reaction sedimentation system 13 and the cloth filter after modification is higher.

It is understood that the sewage in the present application is delivered to each treatment unit or treatment equipment through the water delivery pipeline S.

It is to be understood that the dashed box at a in fig. 1 in this application is not present for purposes of following the enlarged partial views, and is purposely provided for the convenience of the reader. The pipeline network in fig. 1 is also a schematic diagram for easy understanding, and the practical application is not limited to this.

In some possible embodiments, referring to fig. 2, the bottom of the first primary sedimentation tank 110 further has: a settling zone 112.

The water inlet of the first sub primary sedimentation tank 110 is opened at the bottom of the sedimentation zone 112.

The water outlet of the second sub-primary sedimentation tank 120 is arranged on a first side wall 121 of the second sub-primary sedimentation tank 120, and the first side wall 121 is positioned on one side of the cloth filter system 12 far away from the biochemical reaction sedimentation system 13.

In this embodiment, the water inlet of the first sub primary sedimentation tank 110 is opened at the bottom of the sedimentation zone 112, and the heavier sand and mud in the sewage from the water inlet of the first sub primary sedimentation tank 110 can directly fall into the sedimentation zone 112. In the process of sewage treatment by the biochemical reaction sedimentation system 13, the sludge mixed in the sewage can be filtered into the sedimentation zone 112 again, and the sedimentation zone 112 can collect the sludge and sand in the sewage.

The water purified by the biochemical reaction sedimentation system 13 enters the cloth filter system 12 again, and is discharged from the water outlet of the second primary sedimentation tank 120 after being purified again. The water outlet of the second sub-primary sedimentation tank 120 is positioned at one side of the cloth filter system 12 far away from the biochemical reaction sedimentation system 13. The cloth filter system 12 is mainly a sewage treatment unit for treating suspended matters and total phosphorus, and sewage treated by the cloth filter system 12 can reach the discharge standard.

Since much sludge is collected in the settling zone 112, in some possible embodiments, the first sub-primary settling tank 110 further has: a first sludge discharge port. The second sub-primary sedimentation tank 120 further has: and a second sludge discharge port. The sewage treatment system 1 further includes: a sludge dewatering system.

The first sludge discharge port is arranged on a second side wall 111 of the first sub primary sedimentation tank 110 positioned in the sedimentation zone 112.

The second sludge discharge port is opened at the bottom of the second sub primary sedimentation tank 120 between the cloth filter system 12 and the first side wall 121.

The sludge dewatering system is communicated with the first sludge discharge port and the second sludge discharge port.

In this embodiment, the first sludge discharge opening is opened on the second sidewall 111 of the settling zone 112, so as to discharge the sludge from the settling zone 112. The sludge filtered by the cloth filter system 12 is also collected at the bottom of the second primary sedimentation tank 120, and the second sludge discharge port is opened at the bottom of the second primary sedimentation tank 120, so that the sludge at the bottom of the second primary sedimentation tank 120 can be conveniently discharged. The sewage treatment system 1 further comprises a sludge dewatering system, the first sludge discharge port and the second sludge discharge port are communicated with the sludge dewatering system, the discharged sludge is conveyed to the sludge dewatering system through a sewage discharge pipeline N for dewatering treatment, and then the discharged sludge is conveyed to an external sludge receiving device for treatment.

Alternatively, the sludge dewatering system may include, but is not limited to, any one of a belt sludge dewatering machine, a box sludge press, a stack sludge dewatering machine, and a horizontal centrifugal sludge dewatering machine.

Optionally, the sewage treatment system 1 further comprises:

and the sludge conditioning tank is communicated with the first sub primary sedimentation tank 110 and is used for receiving the sludge discharged by the first sub primary sedimentation tank 110 and carrying out sludge property conditioning process treatment on the sludge.

The sludge thickening tank is communicated with the sludge conditioning tank and the sludge dewatering system, and the sludge thickening tank is used for receiving sludge discharged by the sludge conditioning tank, performing sludge thickening treatment and then outputting the sludge to the sludge dewatering system.

In some possible embodiments, referring to fig. 2 and 4, the biochemical reaction precipitation system 13 further includes: a water distribution system and at least one loop clarifier 130.

The loop clarifier 130 is disposed in the first sub-primary settling tank 110 and spaced apart from the bottom of the first sub-primary settling tank 110.

The water distribution system communicates with the settling zone 112 and the loop clarifier 130.

In this embodiment, the biochemical reaction sedimentation system 13 mainly performs water purification treatment through the loop clarifier 130, the water distribution system is communicated with the water inlet of the first sub-primary sedimentation tank 110, and the sewage entering from the water inlet of the first sub-primary sedimentation tank 110 is distributed to the treatment units such as the loop clarifier 130 in the biochemical reaction sedimentation system 13 for treatment. Wherein, sewage enters the interior of the loop clarifier 130 from the diversion through hole 1301 of the loop clarifier 130 through the water distribution system, sludge with higher density can be collected to the diversion element 1303 along the inclined plate 1302 of the loop clarifier 130, the diversion element 1303 is in an inverted triangle shape and can also play a role of guiding, so that the sludge is discharged to the sedimentation area 112, and supernatant liquid left after the sewage is treated enters the overflow groove of the loop clarifier 130 and is discharged to the second primary sedimentation tank 11 or the cloth filter system 12 through the drain pipe 1304.

Optionally, there may be one or more loop clarifiers 130, which may be configured to handle the volume of wastewater, and which may be flexible and controllable.

In some possible embodiments, the wastewater treatment system 1 further comprises: a blower system 14; the biochemical reaction precipitation system further comprises: at least one aerator 131;

the air blowing system 14 is communicated with an aerator 131, and the aerator 131 is arranged on the bottom surface of the first sub-primary sedimentation tank 110 in the sedimentation zone 112.

In the present embodiment, referring to fig. 2 and 3, an aerator 131 is disposed in the biochemical reaction sedimentation tank 2 for providing oxygen and air lift. In practice, the aerator 131 is disposed at the bottom of the first primary sedimentation tank 110, and the blower system 14 is communicated with the aerator 131 through the gas transmission pipeline K, and is used for transmitting gas into the aerator 131. The aerator 131 aerates the bottom of the biochemical reaction sedimentation system 13 to generate bubbles, the bubbles stir the mud-water mixture at the bottom of the biochemical reaction sedimentation system 13 to form a circular flow in the ascending process, wherein, the sludge and other substances with higher density can be settled in the sedimentation area 112, and the supernatant enters the second primary sedimentation tank 120 after passing through the circular flow clarifier 130 and is subjected to advanced treatment through the cloth filter system 12. It will be understood that the two upward arrows drawn in the figures of the present application in the settling zone are understood to be the upward direction after the water flow has been disturbed.

Optionally, there may be one or more aerators 131, which can be flexibly set according to the amount of sewage to be treated.

Optionally, the gas transmission pipeline K of the blower system 14 is also communicated to the biochemical reaction sedimentation system 13 so as to stir the muddy water mixture in the biochemical reaction sedimentation system 13 to form a circular flow.

In some possible embodiments, the wastewater treatment system 1 further comprises: a cover 101.

The cover body 101 is arranged on the top of the primary sedimentation tank 11.

In this embodiment, the cover 101 is disposed at the top of the whole primary sedimentation tank 11, and can cover the primary sedimentation tank 11 and the biochemical reaction sedimentation system 13 and the cloth filter system 12 in the primary sedimentation tank 11, so as to protect the primary sedimentation tank 11 and the biochemical reaction sedimentation system 12, and prevent the influence of sunlight on the processing unit in the primary sedimentation tank 11, for example, the overflow trough and the like can be blocked by algae bred in the biochemical reaction sedimentation system 13 due to sunlight irradiation.

In some possible embodiments, referring to fig. 1, the sewage treatment system 1 further includes: a first deodorizing duct F1 and a first deodorizing means 15.

The first deodorizing duct F1 communicates the first deodorizing means 15 with the cloth filter system 12.

In this embodiment, the first deodorizing device 15 is newly provided to deodorize the cloth filter system 12, thereby preventing the surrounding environment from being affected by the odor generated from the system.

It can be understood that the sewage is inevitably mixed with silt in the process of gathering, and if the silt in the sewage is not settled and separated in advance, the sand in the sewage can cause great influence on the operation of subsequent treatment equipment, for example, a pump required by the operation of the equipment can be abraded, a water pipeline S pipe network is blocked, and the like. The present application thus also provides some embodiments as follows: referring to fig. 1, the sewage treatment system 1 further includes: an aerated grit chamber 16, a second deodorising duct F2 and a second deodorising block 17.

The aerated grit chamber 16 is in communication with a first sub-primary settling tank 110.

A grating 161 and a sand discharge device 162 are arranged in the aeration grit chamber 16.

The second deodorization pipeline F2 communicates the second deodorization device 17 with the aerated grit chamber 16.

In the embodiment, the aeration grit chamber 1 introduces sewage, removes particulate matters in the sewage and discharges the sewage to other treatment equipment or treatment units, so as to avoid the particulate matters in the sewage from blocking or wearing equipment in subsequent process units. Wherein, the grating 161 is close to the water inlet direction, and the sand discharging device 162 can perform sand discharging treatment on the sewage flowing through the grating 161. And, the sewage introduced into the sand discharging device 162 is deodorized by the second deodorizing device 17.

Alternatively, the aerated grit chamber 16 may employ any one of a advection aerated grit chamber and a swirl aerated grit chamber. Taking the advection aeration grit chamber as an example, the advection aeration grit chamber can remove sand grains with larger grain diameters in sewage so as to protect facilities such as a water pipeline S, a valve and the like and avoid abrasion and blockage.

In some possible embodiments, the wastewater treatment system 1 further comprises: a distribution well 18 and a first dosing room 19.

The water inlet of the distributing well 18 is communicated with the water outlet of the end of the aeration grit chamber 16 with the sand discharging device 162.

The first medicine adding room 19 is communicated with a first medicine inlet of the water distribution well 18.

The water outlet of the distributing well 18 is communicated with the water inlet of the first secondary primary sedimentation tank 11.

In this embodiment, the distribution well 18 is communicated with the aeration grit chamber 16, the sewage treated by the aeration grit chamber 16 is discharged into the distribution well 18, and the first dosing room 19 can put a phosphorus removal agent and a carbon source agent into the distribution well 18 through the dosing pipeline JY to perform phosphorus removal treatment on the sewage in the distribution well 18. And a water purifying agent or a coagulant can be added according to actual needs.

In some possible embodiments, the wastewater treatment system 1 further comprises a first dosing compartment 20.

The first dosing room 20 is respectively communicated with a second dosing port of the water distribution well 18 and a third dosing port of the cloth filter system 12.

In this embodiment, the original first dosing room 20 is used for adding sodium carbonate into the distribution well 18, and the first dosing room 20 may also be directly provided with a dosing pipeline JY which is communicated to the modified filter cloth filter system 12, and agents such as sodium hypochlorite are added into the filter cloth filter system 12 to sterilize and disinfect the sewage treated by the filter cloth filter system 12.

By applying the embodiment of the application, at least the following beneficial effects can be realized:

1. the primary sedimentation tank 11 is divided into a first secondary primary sedimentation tank 110 and a second secondary primary sedimentation tank 120, a biochemical reaction sedimentation system 13 is arranged in the first secondary primary sedimentation tank 110, and the first secondary primary sedimentation tank 110 plays a role of a biochemical reaction sedimentation tank and can purify sewage to a certain degree; the second sub-primary sedimentation tank 120 is internally provided with the cloth filter system 12, the second sub-primary sedimentation tank 120 contains the cloth filter system 12, the second sub-primary sedimentation tank 120 is equivalent to the cloth filter, no cloth filter needs to be additionally arranged outside the primary sedimentation tank 11, sewage from the first sub-primary sedimentation tank 110 and the biochemical reaction sedimentation system 13 is directly further purified in the primary sedimentation tank 11, the second sub-primary sedimentation tank 120 also plays a role in protecting the cloth filter system 12, the efficiency of sewage treatment is improved, and meanwhile, no other site selection is needed for building the biochemical reaction sedimentation tank and the cloth filter, and the cost of sewage treatment is reduced.

2. The first sludge discharge opening is opened on the second side wall 111 of the settling zone 112 to facilitate the discharge of sludge from the settling zone 112. The sludge filtered by the cloth filter system 12 is also collected at the bottom of the second primary sedimentation tank 120, and the second sludge discharge port is opened at the bottom of the second primary sedimentation tank 120, so that the sludge at the bottom of the second primary sedimentation tank 120 can be conveniently discharged. The sewage treatment system 1 further comprises a sludge dewatering system, the first sludge discharge port and the second sludge discharge port are communicated with the sludge dewatering system, discharged sludge is conveyed to the sludge dewatering system to be dewatered, and then conveyed to an external sludge receiving device to be treated.

3. The lid 101 is located the top of whole preliminary sedimentation tank 11, can cover the preliminary sedimentation tank 11 and the biochemical reaction sedimentation system 13 and the filter cloth filter system 12 in the preliminary sedimentation tank 11, plays the effect of protection, avoids the sunshine to cause the influence to the processing unit in the preliminary sedimentation tank 11, for example because the alga that the sunshine shines and breed can block up overflow launder etc. in biochemical reaction sedimentation system 13.

4. The newly-built deodorizing device is used for deodorizing the cloth filter system 12, so that the odor generated by the system is prevented from influencing the surrounding environment.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (10)

1. A wastewater treatment system, comprising: a primary sedimentation tank, a biochemical reaction sedimentation system and a cloth filter system; the primary sedimentation tank comprises a first secondary primary sedimentation tank and a second secondary primary sedimentation tank;

the biochemical reaction sedimentation system is arranged in the first primary sedimentation tank;

the cloth filter system is arranged in the second primary sedimentation tank;

and the water outlet of the biochemical reaction sedimentation system is communicated with the water inlet of the cloth filter system.

2. The wastewater treatment system according to claim 1, wherein the bottom of the first sub-primary sedimentation tank further has: a settling zone;

the water inlet of the first secondary primary sedimentation tank is arranged at the bottom of the sedimentation zone;

and the water outlet of the second sub primary sedimentation tank is arranged on a first side wall of the second sub primary sedimentation tank, and the first side wall is positioned on one side of the cloth filter system, which is far away from the biochemical reaction sedimentation system.

3. The wastewater treatment system according to claim 2, wherein the first sub-primary sedimentation tank further has: a first sludge discharge port; the second primary sedimentation tank further comprises: a second sludge discharge port; the sewage treatment system further comprises: a sludge dewatering system;

the first sludge discharge port is formed in the second side wall of the first sub primary sedimentation tank, which is positioned in the sedimentation zone;

the second sludge discharge port is formed in the bottom of the second sub primary sedimentation tank between the cloth filter system and the first side wall;

the sludge dewatering system is communicated with the first sludge discharge port and the second sludge discharge port.

4. The wastewater treatment system of claim 2, wherein the biochemical reaction precipitation system further comprises: a water distribution system and at least one loop clarifier;

the circulation clarifier is arranged in the first sub primary sedimentation tank and is spaced from the bottom of the first sub primary sedimentation tank;

the water distribution system is communicated with the settling zone and the circulation clarifier.

5. The wastewater treatment system of claim 2, further comprising: a blower system; the biochemical reaction precipitation system further comprises: at least one aerator;

the air blowing system is communicated with the aerator, and the aerator is arranged on the bottom surface of the first primary sedimentation tank in the sedimentation zone.

6. The wastewater treatment system of claim 1, further comprising: a cover body;

the cover body is arranged at the top of the primary sedimentation tank.

7. The wastewater treatment system of claim 1, further comprising: a first deodorizing pipe and a first deodorizing means;

the first deodorization pipeline is communicated with the first deodorization device and the cloth filter system.

8. The wastewater treatment system of claim 1, further comprising: the aeration grit chamber, a second deodorization pipeline and a second deodorization device;

the aeration grit chamber is communicated with the first secondary primary sedimentation tank;

a grid and a sand discharge device are arranged in the aeration grit chamber;

the second deodorization pipeline is communicated with the second deodorization device and the aeration grit chamber.

9. The wastewater treatment system of claim 8, further comprising: a water distribution well and a first dosing room;

the water inlet of the water distribution well is communicated with the water outlet at one end of the aeration grit chamber, which is provided with the sand discharge device;

the first dosing room is communicated with a first dosing inlet of the water distribution well;

and the water outlet of the distribution well is communicated with the water inlet of the first secondary primary sedimentation tank.

10. The wastewater treatment system of claim 9, further comprising a second dosing chamber;

and the second dosing room is respectively communicated with a second dosing port of the water distribution well and a third dosing port of the cloth filter system.

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