CN211596987U

CN211596987U - Automatic sewage cut-off equipment of control

Info

Publication number: CN211596987U
Application number: CN201922367314.6U
Authority: CN
Inventors: 李国炜; 郑芸; 马华; 崔福义
Original assignee: Chongqing University
Current assignee: Chongqing University
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-09-29
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses an automatic control sewage intercepting device, which comprises a water inlet pipe (1), a sewage draining channel (2), a slag blocking filter screen (3), a grit chamber (4), a fold-shaped groove (6) and a sewage intercepting channel (8), wherein the grit chamber (4) is arranged at the middle section of the sewage draining channel (2), the water inlet pipe (1) is connected with the upper section of the sewage draining channel (2), and a first electric flow regulating valve (5) is arranged at the lower section inlet of the sewage draining channel; install suspended solid SS detector (10) in grit chamber (4), fold shape slot (6) and set up the side in grit chamber (4), fold shape slot (6) intercommunication and cut dirty ditch (8), fold shape slot (6) water inlet and install electronic accent flow valve of second (7), suspended solid SS detector (10) and electronic accent flow valve (5, 7) electric connection director (9). The technical effects of the utility model are that: the initial stage rainwater runoff and the later stage rainwater runoff can be separated, the operating parameters can be adjusted to adapt to the pollution control of the rainwater runoff in different areas, and the sewage backflow can be avoided.

Description

Automatic sewage cut-off equipment of control

Technical Field

The utility model belongs to the technical field of the runoff rainwater is handled, concretely relates to automatic control's sewage cut-off equipment.

Background

Most of middle and large-sized cities adopt a shunt system drainage system, only sewage is collected into a sewage treatment plant for treatment, and surface runoff collected by a rainwater pipe network is directly discharged into a natural water body without any treatment. Research has shown that rainwater runoff carries a large amount of pollutants, and direct discharge without treatment can cause serious non-point source pollution. Meanwhile, the literature shows that the turbidity of the rainwater runoff and the concentration of Suspended Solids (SS) both show a descending trend along with the increase of the rainfall time, and the concentration of the Suspended Solids (SS) has good correlation with the concentration of COD. In the whole rainfall process, the runoff is generally calculated from the runoff generation, the runoff in the first 10-20 min is considered as initial runoff, the pollution degree is serious, the pollution degree of the later runoff is relatively light, and even the direct discharge standard can be reached. Strictly speaking, runoff is discharged directly without any treatment and does not meet environmental standards. However, if all the runoff flows are merged into the urban sewage treatment plant, the unstable water amount can cause huge impact on the urban sewage treatment plant, the normal operation of the sewage treatment plant is influenced, and meanwhile, a large amount of cost is required to be added in the construction period to expand the transportation capacity of the rainwater official network.

At present, the intercepting co-flow drainage system is a treatment mode which has relatively less investment and relatively easy modification in China. The existing intercepting mode has three problems: firstly, the sewage intercepting pipe cannot be automatically closed in a waterlogging season, so that all rainwater enters a town sewage treatment plant through the sewage intercepting pipe, the sewage treatment pressure is increased, and the sewage treatment efficiency is reduced; secondly, when continuous rainstorm occurs, the sewage can flow backwards, and the sewage flowing backwards is directly discharged into a natural water body through a discharge pipe, so that the problem of environmental pollution can be caused; thirdly, the degree of rainwater pollution can not be accurately judged, excessive or too little mixed sewage is discharged into a town sewage treatment plant, the economic benefit is low, and meanwhile, certain environmental risks are also caused. Therefore, how to select a proper and efficient intercepting mode becomes a key problem for the implementation of the intercepting co-flow drainage system.

SUMMERY OF THE UTILITY MODEL

The problem that exists to prior art, the utility model aims to solve the technical problem that an automatic control's sewage cut-off equipment is just provided, it can separate serious initial stage runoff rainwater and the lower later stage runoff rainwater of pollution degree, and can adapt to the runoff pollution control in different areas through adjusting the operating parameter, can avoid sewage to flow backward again, realizes stable, reliable rainwater reposition of redundant personnel.

The technical problem to be solved by the utility model is realized by the technical proposal that the sewage treatment device comprises a water inlet pipe, a sewage discharge channel, a slag blocking filter screen, a grit chamber, a folded groove and a sewage blocking channel,the slag blocking filter screen is arranged at the front end of the grit chamberThe sand basin is arranged at the middle section of the sewage draining channel, the water inlet pipe is connected with the upper section of the sewage draining channel, the lower section of the sewage draining channel is communicated with natural water, and the inlet of the lower section of the sewage draining channel is provided with a first electric flow regulating valve; the sand setting tank is internally provided with a suspended matter SS detector, the folded groove is arranged at the side of the sand setting tank and communicated with the sewage interception channel, the water inlet of the folded groove is provided with a second electric flow regulating valve, and the first electric flow regulating valve, the suspended matter SS detector and the second electric flow regulating valve are electrically connected with a controller.

Compared with the prior art, the utility model has the advantages that:

1. the utility model discloses a separation of initial stage runoff rainwater and later stage runoff rainwater only sends into town sewage treatment plant with the initial stage runoff of high pollution, and the later stage runoff rainwater that will be close emission standard directly discharges, can not cause the paralysis of town sewage treatment plant, has reduced sewage treatment plant's cost.

2. The utility model discloses a suspended solid SS detector is to the pollution concentration real time monitoring who mixes sewage to synthesize the comparison to economic benefits, confirm two electronic accent stream valve best and open and close the water level, thereby cut off the pollution load more high-efficiently.

3. The two electric flow regulating valves are used for directly controlling the water inlet of the sewage discharge channel and the sewage interception channel, so that the mixed sewage can be effectively prevented from flowing backwards.

4. Carry out coordinated control to two electronic accent stream valves through the controller, operating personnel can the remote observation operational aspect, convenient operation, and the operation is simple.

5. The utility model discloses can reform transform at current pipe network, realize initial stage runoff rainwater and later stage runoff rainwater's autosegregation, the cost is lower.

Drawings

The drawings of the utility model are as follows:

fig. 1 is a plan view of the structure of the utility model;

in the figure, 1, a water inlet pipe; 2. a sewage draining channel; 3. a slag blocking filter screen; 4. a grit chamber; 5. a first electrically operated flow regulating valve; 6. a zigzag groove; 7. a second electrically operated flow regulating valve; 8. a sewage interception ditch; 9. a controller; 10. suspended substance SS detector.

Detailed Description

The invention will be further explained with reference to the following figures and examples:

as shown in fig. 1, the utility model comprises a water inlet pipe 1, a sewage draining channel 2, a grit chamber 4, a fold-shaped groove 6 and a sewage intercepting channel 8, wherein the grit chamber 4 is arranged at the middle section of the sewage draining channel 2, the water inlet pipe 1 is connected with the upper section of the sewage draining channel 2, the lower section of the sewage draining channel 2 is communicated with natural water, and a first electric flow regulating valve 5 is arranged at the inlet of the lower section of the sewage draining channel; a suspended matter SS detector 10 is installed in the grit chamber 4, the folded groove 6 is arranged at the side of the grit chamber 4, the folded groove 6 is communicated with a sewage interception channel 8, a second electric flow regulating valve 7 is installed at the water inlet of the folded groove 6, and the first electric flow regulating valve 5, the suspended matter SS detector 10 and the second electric flow regulating valve 7 are electrically connected with a controller 9.

A slag blocking filter screen 3 is arranged at the water outlet of the upper section of the sewage draining channel 2.

The utility model discloses a working process is:

during rainfall, rainwater flows into the upper section of the sewage discharge channel 2 through the water inlet pipe 1 and enters the grit chamber 4, at the early stage of rainfall, the concentration of pollutants in mixed sewage is high, when the concentration measured value of suspended solids SS exceeds the set value of the suspended solids SS detector 10 (the specific set value can be determined through experiments), the first electric flow regulating valve 5 at the lower section inlet of the sewage discharge channel 2 is closed, the second electric flow regulating valve 7 at the water inlet of the zigzag groove 6 is opened, so that the mixed sewage with high pollution load enters the sewage interception channel 8 and is conveyed to the town sewage treatment plant to be treated and then reach the standard to be discharged. Along with the increase of rainfall time, the concentration of the mixed sewage is gradually reduced, when the concentration measured value of suspended solids SS is lower than the set value of the instrument, the first electric flow regulating valve 5 at the lower section inlet of the sewage draining channel 2 is opened, the second electric flow regulating valve 7 at the water inlet of the folded groove 6 is closed, and the mixed sewage at the later stage of low concentration is directly discharged into a branch channel or a natural water body after passing through the slag blocking filter screen 3 and settling sand in the sand settling tank 4. The first electric flow regulating valve 5 and the second electric flow regulating valve 7 are controlled in a linkage manner through a controller 9.

After the light wave sent by the emitter on the sensor of the suspended matter SS detector 10 is absorbed, reflected and scattered by the suspended matter SS in the transmission process, a part of the transmitted light can irradiate the detector in the direction of 180 degrees. The intensity of the light received by the detector has a certain relation with the suspended matter value of the detected sewage, so that the suspended matter SS concentration value of the sewage can be calculated by measuring the intensity of the transmitted light. Suspended solid SS has fine correlation with COD, and the concentration of the suspended solid SS that surveys through the suspended solid SS detector can the analysis obtain COD's concentration value (the correlation of suspended solid SS and COD reachs through the experiment) to judge the pollution degree of initial stage rainwater.

The controller 9 determines the opening and closing states or the optimal opening and closing water levels of the first electric flow regulating valve and the second electric flow regulating valve according to the comparison between the actually measured concentration value of the suspended substance SS and the set value of the controller, so as to achieve the purpose of efficiently intercepting pollution load.

The utility model discloses in installing damming device with suspended solid SS detector and electronic flow regulating valve, carry out coordinated control through the controller, improved accuracy, stability, practicality, the adjustability of rainwater runoff cut-off device and the ability of adapting to different regional runoff. The utility model relates to a carry out full automatic device that dams to initial stage rainfall runoff, have full automation, maintenance management is simple, operating stability is high, simple to operate etc. also can adapt to the rainfall runoff pollution control in different areas through the operating parameter on the adjusting device simultaneously, can adapt to multiple abominable operational environment, and steady operation duration is long.

Claims

1. The utility model provides an automatic sewage cut-off equipment of control, includes inlet tube (1), blowdown canal (2) and cuts dirty canal (8), characterized by: the sewage treatment device is characterized by further comprising a grit chamber (4) and a folded groove (6), wherein the grit chamber (4) is arranged at the middle section of the sewage drainage channel (2), the water inlet pipe (1) is connected with the upper section of the sewage drainage channel (2), the lower section of the sewage drainage channel (2) is communicated with a natural water body, and a first electric flow regulating valve (5) is arranged at the inlet of the lower section of the sewage drainage channel; install suspended solid SS detector (10) in grit chamber (4), fold shape slot (6) and set up the side in grit chamber (4), fold shape slot (6) intercommunication and cut dirty canal (8), fold shape slot (6) water inlet and install electronic accent stream valve of second (7), first electronic accent stream valve (5), suspended solid SS detector (10) and electronic accent stream valve of second (7) electric connection director (9).

2. The sewage shut-off device of claim 1, wherein: a slag blocking filter screen (3) is arranged at the water outlet of the upper section of the sewage draining channel (2).