CN210656233U

CN210656233U - Permeable reactive barrier sewage treatment test device

Info

Publication number: CN210656233U
Application number: CN201921690555.8U
Authority: CN
Inventors: 王瑞; 郑刘根; 姜春露
Original assignee: Anhui University
Current assignee: Anhui University
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-02
Anticipated expiration: 2029-10-10

Abstract

The utility model provides a permeable reactive wall sewage treatment test device, including permeable reactive wall, medium groove, case and play water tank of intaking, the case of intaking sets up the both sides and the medium groove water pipe intercommunication on the medium groove length direction respectively with the play water tank, the parallel interval arrangement of permeable reactive wall just closes on out water tank place side in the medium groove and arranges, close on the case place side of intaking in the medium groove and arrange the foul material and throw the pipe. The utility model discloses can be suitable for the multiple groundwater pollution condition, judge under the different conditions, the ability of permeable reactive barrier treatment sewage.

Description

Permeable reactive barrier sewage treatment test device

Technical Field

The utility model belongs to the sewage treatment field, concretely relates to permeable reactive barrier sewage treatment test device.

Background

Groundwater pollution mainly refers to the phenomenon that groundwater quality changes due to changes in chemical components, physical properties and biological characteristics of groundwater caused by human activities. The formations below the surface of the earth are complex, and the groundwater flows very slowly, so that the groundwater pollution has the characteristics of slow process, difficult discovery and difficult treatment. Once the ground water is polluted, even if the pollution source is completely eliminated, the water quality can be recovered for more than ten years or even several decades. Permeable reactive barrier technology is also called PRB technology, and is an in-situ remediation technology for underground water pollution, which is formed by constructing a permeable reactive barrier or a reactive zone underground and removing pollutants when polluted underground water flows through the reactive barrier or the reactive zone.

According to different target pollutants and different reaction principles, the permeable reactive barrier technology can adopt various reaction media, and before the permeable reactive barrier is put into use formally, the performance of the permeable reactive barrier filled with the media needs to be tested to detect the sewage treatment capacity of the permeable reactive barrier. Because the groundwater pollution condition is different, the effect that permeable reactive barrier played is handled sewage is also different, and present test device all can only carry out analogue test to a water pollution condition alone, can not be suitable for multiple groundwater pollution condition.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a permeable reactive barrier sewage treatment test device can be suitable for the multiple groundwater pollution condition.

In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a permeable reactive barrier sewage treatment test device, includes permeable reactive barrier, medium groove, water inlet tank and play water tank, its characterized in that: the water inlet tank and the water outlet tank are respectively arranged on two sides of the medium tank in the length direction and communicated with the medium tank through water pipes, the permeable reaction walls are arranged in the medium tank in parallel at intervals and close to the side where the water outlet tank is arranged, and the dirt feeding pipe is arranged in the medium tank close to the side where the water inlet tank is arranged.

Further, the water inlet tank and the water outlet tank are respectively connected with the medium groove through a lifting mechanism, the lifting mechanism comprises a vertical rod, a fixing plate with a threaded hole, a nut and a screw rod, the vertical rod is fixedly arranged on the groove wall of the medium groove, the fixing plate is horizontally fixed at the top end of the vertical rod, the nut is arranged on the upper plate surface of the fixing plate, the threaded hole of the fixing plate is penetrated by the upper end portion of the screw rod, the nut and the screw rod form a screw rod nut mechanism, and the water inlet tank and the water outlet tank are respectively connected with the screw rod of the lifting mechanism.

Furthermore, a plurality of detection ports are uniformly arranged at the bottom of the medium groove at intervals, and valves are arranged on the detection ports.

Further, be equipped with the medium in the medium groove, the medium is fine sand and clay, the tank bottom department in medium groove is equipped with the first water barrier that the clay was filled and is constituted, the first aquifer that fine sand was filled and is constituted has been laid to first water barrier top, first aquifer closes on the delivery box place side top and has laid the second water barrier, first aquifer closes on the delivery box place side top and has laid the second aquifer.

Further, a plurality of through holes are evenly formed in the dirty material feeding pipe, and a filter screen is wrapped on a pipe body of the dirty material feeding pipe and used for blocking fine sand from entering the pipe.

Through adopting above-mentioned technical scheme, at the incasement of intaking add sewage, make sewage circulate to the play water tank place side along the medium groove, the condition that the simulation groundwater runoff pollutes, or at the incasement of intaking add the clear water, put in dirty material to dirty material input pipe, the clear water becomes sewage after dirty material, continue to circulate to the play water tank place side, the condition that the simulation groundwater point source pollutes, the pollutant of aquatic is disposed away to sewage when through the permeable reaction wall, it detects to gain water from play water tank department, thereby judge the ability that permeable reaction wall handled sewage.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural diagram of the present invention after being filled with a medium;

fig. 3 is a cross-sectional view vertically downward in the length direction of the present invention in fig. 2.

Detailed Description

The present invention is further described with reference to fig. 1 to 3:

the utility model provides a permeable reactive barrier sewage treatment test device, includes permeable reactive barrier 10, medium groove 20, inlet tank 30 and play water tank 40, its characterized in that: the water inlet tank 30 and the water outlet tank 40 are respectively arranged at two sides of the medium tank 20 in the length direction and are communicated with the medium tank 20 through water pipes, the permeable reactive barrier 10 is arranged in the medium tank 20 at intervals in parallel and is arranged close to the side where the water outlet tank 40 is located, and the sewage material feeding pipe 50 is arranged in the medium tank 20 close to the side where the water inlet tank 30 is located. Adding sewage into the water inlet tank 30, enabling the sewage to flow to the side where the water outlet tank 40 is located along the medium groove 20, simulating the condition of groundwater runoff pollution, or adding clear water into the water inlet tank 30, putting dirty materials into the dirty material putting pipe 50, enabling the clear water to become sewage after the dirty materials pass through, continuing flowing to the side where the water outlet tank 40 is located, simulating the condition of groundwater point source pollution, removing pollutants in the water when the sewage passes through the permeable reactive barrier 10, and obtaining water from the water outlet tank 40 for detection, thereby judging the capability of the permeable reactive barrier 10 for treating the sewage.

The water inlet tank 30 and the water outlet tank 40 are respectively connected with the medium tank 20 through a lifting mechanism 60, the lifting mechanism 60 comprises a vertical rod 61, a fixing plate 62 with a threaded hole, a nut 63 and a screw rod 64, the vertical rod 61 is fixedly arranged on the tank wall of the medium tank 20, the fixing plate 62 is horizontally fixed at the top end of the vertical rod 61, the nut 63 is arranged on the upper plate surface of the fixing plate 62, the upper end part of the screw rod 64 penetrates through the threaded hole of the fixing plate 62 to form a screw rod nut mechanism with the nut 63, and the water inlet tank 30 and the water outlet tank 40 are respectively connected with the screw rod 64 of the lifting mechanism 60. The height of the water inlet tank 30 and the height of the water outlet tank 40 are adjusted by arranging the lifting mechanism 60, so that the control of water quantity and water level is facilitated, the lifting mechanism 60 mainly adopts a screw rod nut mechanism, the up-and-down movement of a screw rod is controlled by rotating a nut 63, the up-and-down movement of the screw rod drives the water inlet tank 30 and the water outlet tank 40 which are connected with the screw rod to move up and down, and therefore the height of the water inlet tank 30 and the height of the water outlet.

The bottom of the medium groove 20 is provided with a plurality of detection ports 21 at uniform intervals, and the detection ports 21 are provided with valves. The sewage in the medium tank 20 can be sampled and detected at any time by arranging the plurality of detection ports 21, and the opening and closing of the detection ports 21 are controlled by arranging valves.

Be equipped with the medium in the medium groove 20, the medium is fine sand and clay, the tank bottom department in medium groove 20 is equipped with the first water barrier 22 that the clay was filled and is constituted, the first aquifer 23 that fine sand was filled and is constituted has been laid to first water barrier 22 top, first aquifer 23 is close to the delivery box 40 place and has been laid second water barrier 24 in the side top, first aquifer 23 is close to the delivery box 30 place and has been laid second aquifer 25 in the side top. The underground condition is simulated by setting the medium, so that the environment where underground water is located is truly simulated, the condition of simulating the pollution of the runoff of the underground water and the condition of simulating the pollution of the point source of the underground water are realized, the condition of simulating the pollution of the surface source of the underground water is realized by using the sewage which is dispersed in a large area and poured on the second aquifer 25, various underground water pollution conditions are realized by the device, and the capability of treating sewage by the permeable reactive barrier 10 is judged under different conditions.

A plurality of through holes are evenly formed in the dirty material feeding pipe 50, and a filter screen is wrapped on a pipe body of the dirty material feeding pipe 50 and used for blocking fine sand from entering the pipe. Through set up the through-hole on dirty material is thrown pipe 50 and is convenient for dirty material and does not intervene the external environment when melting into the clear water, and the secondary usage of being convenient for sets up the filter screen and blocks that fine sand gets into intraductally.

Claims

1. The utility model provides a permeable reactive barrier sewage treatment test device, includes permeable reactive barrier (10), medium groove (20), water inlet tank (30) and goes out water tank (40), its characterized in that: the water inlet tank (30) and the water outlet tank (40) are respectively arranged on two sides of the medium tank (20) in the tank length direction and communicated with the medium tank (20) through a water pipe, the permeable reactive barrier (10) is parallelly arranged in the medium tank (20) at intervals and is arranged close to the side where the water outlet tank (40) is located, and the dirt feeding pipe (50) is arranged close to the side where the water inlet tank (30) is located in the medium tank (20).

2. The permeable reactive barrier wastewater treatment test device of claim 1, wherein: the utility model discloses a medium tank, including intaking case (30) and play water tank (40), it is connected with medium groove (20) through elevating system (60) respectively to intake case (30) and play water tank (40), elevating system (60) include montant (61), fixed plate (62), nut (63) and lead screw (64) that have the screw hole, montant (61) are fixed to be set up on the cell wall of medium groove (20), the top at montant (61) is fixed to fixed plate (62) level, nut (63) set up on the last face of fixed plate (62), the screw hole that fixed plate (62) were passed to the upper end of lead screw (64) constitutes lead screw nut mechanism with nut (63), intake case (30) and play water tank (40) are connected with lead screw (64) of elevating system (60) respectively.

3. The permeable reactive barrier wastewater treatment test device of claim 1, wherein: the tank bottom of medium groove (20) is equipped with a plurality of at even interval and detects mouth (21), be equipped with the valve on detecting mouth (21).

4. The permeable reactive barrier wastewater treatment test device of claim 1, wherein: be equipped with the medium in medium groove (20), the medium is fine sand and clay, the tank bottom department in medium groove (20) is equipped with first water barrier (22) that the clay was filled and is constituted, first aquifer (23) that fine sand was filled and is constituted have been laid to first water barrier (22) top, first aquifer (23) are close to outlet box (40) place side top and have been laid second water barrier (24), first aquifer (23) are close to inlet box (30) place side top and have been laid second aquifer (25).

5. The permeable reactive barrier wastewater treatment test device of claim 1, wherein: a plurality of through holes are uniformly formed in the dirty material feeding pipe (50), and a filter screen is wrapped on a pipe body of the dirty material feeding pipe (50) and used for blocking fine sand from entering the pipe.