CN209113612U - Sewage treatment system with zero discharge - Google Patents

Abstract

The utility model relates to a zero-discharge system for sewage treatment, which comprises a sand-gravel separation system for sand-gravel separation, a fine-sand recovery system for fine-sand recovery, a sewage stirring system for preventing sewage from precipitation and solidification, and a sewage-adjusting system. Concentrated sewage concentration adjustment system and sewage reuse system for sewage recycling, the fine sand recovery system, sewage mixing system, sewage concentration adjustment system and sewage reuse system are sequentially connected through sewage pipelines. The utility model separates the sand and gravel in the waste, recycles the sand and the stone, and the sewage is recycled and recycled through the concentration adjustment, so as to achieve zero discharge of sewage in the environmental protection mixing station, and effectively solve the problem that various wastes and mud water exceeding the standard in the mixing station It also solves the problem that waste cannot be effectively utilized.

Description

Sewage treatment zero discharge system

technical field

The utility model relates to the technical field of sewage treatment, relates to concrete sewage treatment equipment, in particular to a sewage treatment zero-discharge system, which is mainly used for separating out stones, sand and mortar water and recycling them in the sewage recycling process , can achieve zero discharge of fine sand.

Background technique

Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. The term concrete usually refers to cement concrete as cementing material, sand and stone as aggregate; it is mixed with water (may contain admixtures and admixtures) in a certain proportion, and the cement concrete obtained by stirring is also called ordinary concrete. Concrete, which is widely used in the field of civil engineering construction. In the concrete mixing plant, the main sources of sewage generated are as follows: 1. Part of the concrete left in the tanker after the concrete has been transported will produce mortar water when cleaning this part of the wet concrete; The concrete is unqualified and needs to be cleaned and reprocessed. When cleaning this part of the wet concrete, a large amount of mud water will be generated; 3. The waste collected in the mixing station and other places is cleaned and the sewage generated when the mixing station site is washed. In order to protect the environment and save energy, a sewage treatment system is used to treat the sewage generated in the mixing plant.

At present, although the sewage treatment system has been widely used in concrete mixing plants, it can complete the separation of sand, stone and sewage, but the sewage treatment has not been realized. The sewage contains a lot of fine sand and mortar, and the cleanliness is not high. If it is discharged into nature, it will pollute the environment, or put it into production and use. Due to the uncertainty of sewage concentration, the strength and slump of concrete will be affected, resulting in potential safety hazards; and other wastes cannot be effectively used.

Utility model content

The purpose of the present utility model is to provide a zero-discharge system for sewage treatment in view of the above-mentioned deficiencies in the existing slurry water treatment process, which is used to separate out stones, sand and slurry water in the sewage recycling process and recycle them. , can achieve zero discharge of fine sand and sewage.

In order to achieve the above purpose, the technical scheme of the present utility model is: a zero-discharge system for sewage treatment, including a sand and gravel separation system, a fine sand recovery system, a sewage mixing system, a sewage concentration adjustment system and a sewage reuse system, the fine sand The recovery system, the sewage mixing system, the sewage concentration adjustment system and the sewage reuse system are connected in sequence through the sewage pipeline.

Preferably, the sand and gravel separation system includes a sand and gravel separator, a first sedimentation tank, a sewage bucket, a second sedimentation tank connected to the fine sand recovery system through a sewage pipeline, a clean water tank, and a connection with the clean water tank The spray pipe is located above the linear vibrating screen of the sand and gravel separator, the first settling tank is located below the linear vibrating screen of the sand and gravel separator, and the first settling tank is provided with The first slurry pump, the first slurry pump is connected to the sewage bucket through the sewage pipeline, the second sedimentation tank corresponds to the overflow port of the sewage bucket, and the clean water tank is provided with a spray Pipe-connected clean water pump.

Further, it also includes a conveying device, the conveying device includes a motor and an inclined belt driven by the motor, and the bottom end of the inclined belt is located at the discharge port of the linear vibrating screen.

Preferably, the fine sand recovery system includes a cyclone settling tank, a second slurry pump arranged in the second settling tank, and a sand outlet screw connected to the cyclone settling tank, the second slurry pump passing through a sewage pipeline Connected to the cyclone settling tank.

Preferably, the sewage stirring system includes a stirring box and a stirring device arranged in the stirring box, and the stirring box is connected to the swirling sedimentation tank through a sewage pipeline.

Preferably, the sewage concentration adjustment system includes an adjustment tank, a sewage concentration tester and a liquid level gauge installed in the adjustment tank, a first sewage pump installed in the mixing tank, and a make-up pump installed in the clear water tank. A sewage pump is connected to the adjustment tank through a sewage pipeline, and the make-up pump is connected to the clean water tank through a clean water pipeline.

Preferably, it also includes a controller, the controller is respectively connected with the first slurry pump, the second slurry pump, the clean water pump, the sewage concentration tester, the liquid level gauge, the The make-up water pump and the first sewage pump are electrically connected.

Preferably, the sewage reuse includes a finished slurry tank and a second sewage pump arranged in the conditioning tank, the finished slurry tank is connected to the second sewage pump through a sewage pipeline, and the second sewage pump is connected to the second sewage pump. A sewage pump is electrically connected to the controller.

The beneficial effects of the present utility model are:

(1) The zero-discharge system for sewage treatment of the present utility model separates the sand and gravel in the waste, recycles the sand and the stone, and recycles and recycles the sewage through concentration adjustment, so as to achieve zero discharge of sewage in the environmental protection mixing station, effectively solving the problem of mixing The problem of excessive discharge of various wastes and mud water at the station site and environmental pollution has also been solved, and the problem of ineffective utilization of wastes has also been solved.

(2) The zero-discharge system for sewage treatment of the present utility model fully realizes automatic screening of wet concrete waste and sewage treatment, realizes the recycling of sand and gravel and zero discharge of sewage, and the recycling of waterways is more in line with the environmental protection concept of energy saving, energy saving and environmental protection. .

(3) The sewage treatment zero-discharge system of the present utility model adopts a cyclone sedimentation tank to perform secondary filtration on fine sand to realize zero discharge of fine sand.

(4) The sewage treatment zero-discharge system of the present utility model adopts a sewage concentration tester, which can detect the concentration of sewage, automatically adjust the concentration of sewage to reach the set standard, and then recycle it to the mixing station for reuse, so that the sewage can be reused. achieve zero emissions.

(5) The sewage treatment zero-discharge system of the present utility model adopts an overall open structure design, which is more convenient and quick to maintain and use.

(6) The zero-discharge system for sewage treatment of the present utility model, the waste in the concrete tanker is directly injected into the sand and gravel separator for sand and gravel separation after cleaning, without the need for ground slope design, the sewage mixing, concentration adjustment and reuse equipment adopts a box structure, in addition to The sinking tank needs no foundation, the overall equipment is free of foundation, and there is no need to make a complex concrete foundation, which solves the problems of long construction time and high cost for users, saves time, labor, and cost, and can be transported as a whole, and the installation is convenient and fast.

Description of drawings

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

FIG. 3 is a B-B cross-sectional view of FIG. 1 .

In the figure, 1, sewage pipeline, 2, first sedimentation tank, 3, second sedimentation tank, 4, clear water tank, 401, clean water pump, 402, make-up pump, 5, spray pipe, 6, linear vibrating screen, 7. Inclined belt, 8. Swirl settling tank, 9. Sand outlet screw, 10. Mixing tank, 1001, First sewage pump, 11, Regulating tank, 1101, Second sewage pump, 12, Clear water pipeline, 13, Finished Slurry Tank, 1301, Third Sewage Pump, 14, Sand and Gravel Separation Area, 15, Concrete Tanker, 16, Stone Stockyard, 17, Sand Stockyard.

Detailed ways

Hereinafter, the present invention will be specifically described through exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially combined in other embodiments without further recitation.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", etc. is based on the positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

As shown in Figure 1-3, a zero-discharge system for sewage treatment can be seen, the zero-discharge system for sewage treatment includes a sand and gravel separation system, a fine sand recovery system, a sewage mixing system, a sewage concentration adjustment system and a sewage reuse system. The fine sand recovery system, the sewage mixing system, the sewage concentration adjustment system and the sewage reuse system are connected in sequence through the sewage pipeline 1 .

The above-mentioned sewage treatment zero-discharge system of the utility model reuses the sand and stones separated by the sand and gravel separation system, and the generated sewage containing a part of the fine sand is recovered by the fine sand recovery system, and then the fine sand is recovered by the fine sand recovery system. The sewage is mixed into the sewage mixing system to prevent the sewage from precipitation and solidification, and then enters the sewage concentration adjustment system for concentration adjustment, so that it reaches the sewage concentration required by the mixing station site, and is recycled through the sewage reuse system. It realizes the separation and recycling of sand and gravel of wet concrete and zero discharge of sewage, energy saving and environmental protection, and effectively protecting the environment.

Continue to refer to FIG. 1, the sand and gravel separation system includes a sand and gravel separator, a first sedimentation tank 2, a sewage bucket, a second sedimentation tank 3 connected to the fine sand recovery system through a sewage pipeline, a clean water tank 4, and a The spray pipe 5 connected to the clear water tank 4, the spray pipe 5 is located above the linear vibrating screen 6 of the sand and gravel separator, and the first settling tank 2 is located at the linear vibrating screen of the sand and gravel separator. 6 Below, the first sedimentation tank 2 is provided with a first slurry pump, the first slurry pump is connected to the sewage bucket through the sewage pipeline 1, and the second sedimentation tank 3 is connected to the sewage bucket. Corresponding to the overflow port of , the clean water tank 4 is provided with a clean water pump 401 connected with the spray pipe 5 . The waste or unqualified wet concrete in the concrete tanker is injected into the linear vibrating screen of the sand and gravel separator, and the clean water pump cleans the waste on the linear vibrating screen through the spray pipe. The sewage generated by cleaning the concrete tanker or unqualified wet concrete first flows into the first settling tank, and then is pumped into the sewage bucket by the first slurry pump through the sewage pipeline, and then flows into the second settling tank through the overflow port of the sewage bucket. ;The cleaned stones are transported to the stone yard to realize the separation of sand and gravel.

Continuing to refer to FIG. 1 , the zero-discharge system for sewage treatment further includes a conveying device, the conveying device includes a motor and an inclined belt 7 driven by the motor, and the bottom end of the inclined belt 7 is located at the discharge port of the linear vibrating screen 6 place. The stones pass through the continuous vibrating linear vibrating screen, are fully cleaned by the spray pipe, and are transported to the stone yard by the inclined belt for recycling.

Continue to refer to FIG. 1 , the fine sand recovery system includes a cyclone settling tank 8, a second slurry pump arranged in the second settling tank 3, and a sand producing screw 9 connected to the cyclone settling tank 8. The second The slurry pump is connected to the cyclone sedimentation tank 8 through the sewage pipeline 1 . The sewage is pumped into the cyclone sedimentation tank by the second slurry pump through the sewage pipeline. The cyclone sedimentation tank filters the sewage and filters out the fine sand. The filtered sewage overflows into the cyclone sedimentation tank and enters through the sewage pipeline. In the sewage mixing system, the filtered fine sand enters the sand yard through the sand screw for recycling.

Continuing to refer to FIG. 1 , the sewage stirring system includes a stirring box 10 and a stirring device disposed in the stirring box. The stirring box 10 is connected to the cyclone sedimentation tank through a sewage pipeline 1 . The mixing box collects the sewage after the fine sand is recovered by the cyclone sedimentation tank, and is stirred by the mixing device to avoid the precipitation and solidification of the mortar.

Continuing to refer to FIG. 1 , the sewage concentration adjustment system includes an adjustment tank 11 , a sewage concentration tester and a liquid level gauge arranged in the adjustment tank 11 , a first sewage pump 1001 arranged in the mixing tank 10 , and a clean water tank 4 . The first sewage pump 1001 is connected to the adjustment tank 11 through the sewage pipeline 1 , and the replenishment pump 402 is connected to the clean water tank 4 through the clean water pipeline 12 . According to the sewage concentration measured by the sewage concentration tester in the adjustment tank, the make-up pump is started, and the clean water in the clean water tank is replenished into the adjustment tank to adjust the sewage concentration so that it can reach the sewage concentration required by the mixing station site for recycling. .

In order to realize the automation of the sewage treatment zero-discharge system, the sewage treatment zero-discharge system further includes a controller, and the controller is respectively connected with the first slurry pump, the second slurry pump, the clean water pump 401, The sewage concentration tester, the liquid level gauge, the make-up water pump 402 and the first sewage pump 1001 are electrically connected. The controller controls the first slurry pump, the second slurry pump, the clean water pump, the make-up pump, and the first sewage pump to work. When adjusting the sewage concentration, the controller receives the sewage concentration and the sewage concentration measured by the sewage concentration tester. The sewage water level measured by the liquid level gauge controls the replenishment pump, replenishes water into the adjustment tank, and adjusts the concentration of the sewage in the adjustment tank to make it reach the sewage concentration required by the mixing station site, which can be recycled and reused.

Continuing to refer to FIG. 1 , the sewage reuse includes a finished slurry tank 13 and a second sewage pump 1101 arranged in the conditioning tank 11 , and the finished slurry tank 13 communicates with the second sewage through a sewage pipeline 1 . The pump 1101 is connected, the second sewage pump 1101 is electrically connected to the controller, and the controller controls the operation of the second sewage pump to realize automatic operation. After the sewage concentration in the adjustment tank reaches the fixed sewage concentration required on site, the sewage is recycled into the finished slurry tank through the second sewage pump and sewage pipeline, and then enters the concrete mixer together with the clean water for recycling and reuse. , so that the sewage on site of the batching plant can be recycled, and the zero discharge of sewage in the environmental-friendly batching plant can be achieved.

When the above-mentioned zero-discharge system for sewage treatment processes the remaining materials in the concrete tanker, its working process is as follows:

Waste direction: After the concrete tanker with leftover materials returns to the mixing station, it enters the sand and gravel separation area. The single-shot photoelectric switch located in the sand and gravel separation area senses the concrete tanker, and the sand and gravel separator begins to prepare. After it is in place, the driver stops, and the clean water pump fills the tanker with water through the clean water pipeline connected to it. After adding water, the operator injects the waste in the concrete tanker into the linear vibrating screen of the sand and gravel separator, and the clean water pump passes the spray pipe to the straight line. The waste on the vibrating screen is cleaned, the cleaned sand and the generated sewage enter the first settling tank through the linear vibrating screen, and the cleaned stones are transported to the stone yard by the inclined belt. At the same time, other wastes can also be cleaned, separated, loaded and collected through the spray pipe and the sand and gravel separator.

Sewage direction: The sewage for cleaning the concrete tanker first flows into the first settling tank, and then is pumped into the sewage bucket by the first slurry pump through the sewage pipeline, and then flows into the second settling tank through the overflow port of the sewage bucket. The sewage in the sedimentation tank is pumped into the cyclone sedimentation tank by the second slurry pump through the sewage pipeline. The sewage in the mixing box is continuously stirred by the stirring device, and then pumped into the adjustment tank by the first sewage pump through the sewage pipeline. The make-up pump in the clean-water tank pumps the clean water in the clean-water tank into the adjustment tank for replenishment, and adjusts the sewage in the adjustment tank to make it reach the concentration required on site of the mixing station, and then the second sewage pump passes through the sewage pipeline. The adjusted sewage is pumped into the finished slurry tank for temporary storage and used for the production of new concrete. During the production of new concrete, the sewage in the finished slurry tank can be pumped into the sewage metering hopper of the mixing station by the third sewage pump through the sewage pipeline.

When the above-mentioned zero-discharge sewage treatment system treats unqualified wet concrete, its working process is as follows:

Waste direction: The operator injects unqualified wet concrete into the linear vibrating screen of the sand and gravel separator, the clean water pump cleans the waste on the linear vibrating screen through the spray pipe, and the cleaned sand and the generated sewage enter through the linear vibrating screen In the first settling tank, the cleaned stones are transported to the stone quarry by the inclined belt. At the same time, other wastes can also be cleaned, separated, loaded and collected through the spray pipe and the sand and gravel separator.

Sewage direction: The sewage for cleaning concrete first flows into the first settling tank, and then is pumped into the sewage bucket by the first slurry pump through the sewage pipeline, and then flows into the second settling tank through the overflow port of the sewage bucket. The sewage in the pool is pumped into the cyclone sedimentation tank by the second slurry pump through the sewage pipeline. The cyclone sedimentation tank filters out the fine sand and overflows the sewage through the pressure, and enters the mixing tank through the sewage pipeline; The sewage in the tank is continuously stirred by the stirring device, and then pumped into the adjustment tank by the first sewage pump through the sewage pipeline. The sewage in the adjustment tank is measured by the sewage concentration tester to obtain the current concentration of sewage, and the clean water is started according to the concentration. The make-up pump in the pool pumps the clean water in the clean-water pool into the adjustment tank for replenishment, and adjusts the sewage in the adjustment tank to make it reach the concentration required by the mixing station site, and then the second sewage pump will adjust the adjustment through the sewage pipeline. The last sewage is pumped into the finished slurry box for the production of new concrete. During the production of new concrete, the sewage in the finished slurry tank can be pumped into the sewage metering hopper of the mixing station by the third sewage pump through the sewage pipeline.

The above examples are only used to illustrate the present invention for convenience, and are not intended to limit the protection scope of the present invention. Included in the scope of the above patent application.

Claims (8)

1. a sewage treatment zero discharge system, is characterized in that, comprises sand and gravel separation system, fine sand recycling system, sewage mixing system, sewage concentration adjustment system and sewage reuse system, described fine sand recycling system, sewage mixing system, The sewage concentration adjustment system and the sewage reuse system are connected in sequence through the sewage pipeline. 2 . The zero discharge system for sewage treatment according to claim 1 , wherein the sand and gravel separation system comprises a sand and gravel separator, a first settling tank, a sewage bucket, a sewage pipeline and the fine sand recovery system. 3 . The connected second sedimentation tank, the clear water tank and the spray pipe connected with the clear water tank, the spray pipe is located above the linear vibrating screen of the sand and gravel separator, and the first sedimentation tank is located in the sand and gravel Below the linear vibrating screen of the separator, the first sedimentation tank is provided with a first slurry pump, the first slurry pump is connected to the sewage bucket through a sewage pipeline, and the second sedimentation tank is connected to the sewage The overflow port of the bucket corresponds, and the clean water tank is provided with a clean water pump connected with the spray pipe. 3. The zero-discharge system for sewage treatment according to claim 2, further comprising a conveying device comprising a motor and an inclined belt driven by the motor, the bottom end of the inclined belt being located at the linear vibration At the sieve outlet. 4. The zero discharge system for sewage treatment according to claim 2 or 3, wherein the fine sand recovery system comprises a cyclone settling tank, a second slurry pump arranged in the second settling tank, and a cyclone settling tank. The sand outlet screw connected to the tank, the second slurry pump is connected to the cyclone sedimentation tank through the sewage pipeline. 5 . The zero-discharge system for sewage treatment according to claim 4 , wherein the sewage stirring system comprises a stirring box and a stirring device arranged in the stirring box, and the stirring box is connected to the swirling flow through a sewage pipeline. 6 . Settling tank connection. 6 . The zero-discharge system for sewage treatment according to claim 5 , wherein the sewage concentration adjustment system comprises a regulation box, a sewage concentration tester and a liquid level gauge arranged in the regulation box, and a A first sewage pump and a make-up pump arranged in the clean water tank, the first sewage pump is connected to the adjustment tank through a sewage pipeline, and the make-up pump is connected to the clean water tank through a clean water pipeline. 7 . The zero-discharge system for sewage treatment according to claim 6 , further comprising a controller, the controller is respectively connected with the first slurry pump, the second slurry pump, and the clean water pump. 8 . , The sewage concentration tester, the liquid level gauge, the make-up water pump and the first sewage pump are electrically connected. 8 . The zero-discharge system for sewage treatment according to claim 7 , wherein the sewage reuse comprises a finished slurry tank and a second sewage pump arranged in the conditioning tank, and the finished slurry tank passes through the The sewage pipeline is connected with the second sewage pump, and the second sewage pump is electrically connected with the controller.