CN215288281U

CN215288281U - Sewage treatment device

Info

Publication number: CN215288281U
Application number: CN202120846733.2U
Authority: CN
Inventors: 李陈勇; 陆万林; 周道美; 莫官林; 吴锋; 李天志; 郑海林; 谢嘉宁; 刘登; 李春华; 莫慧明
Original assignee: Guangxi Zhenlong Industrial Co ltd
Current assignee: Guangxi Zhenlong Industrial Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-12-24
Anticipated expiration: 2031-04-23

Abstract

The utility model belongs to the technical field of sewage treatment technique and specifically relates to a sewage treatment plant, including storage system and direct processing system, the storage system is including the effluent water sump, multistage holding vessel and the purifier that communicate in proper order, and direct processing system is including the effluent water sump and the purifier that communicate in proper order. The utility model provides a can deal with the sewage treatment plant of a large amount of sewage of proruption, add multistage holding vessel and communicate with the effluent water sump to carry out reasonable control through control circuit system to valve and supercharging equipment in the device, make the unable unnecessary sewage that holds of multistage holding vessel storage effluent water sump, improved the sewage storage capacity, avoid the sewage of effluent water sump to overflow and discharge to all ring edge borders.

Description

Sewage treatment device

Technical Field

The utility model relates to a sewage treatment technology, in particular to a sewage treatment device.

Background

The corrugated paper box inevitably produces sewage in the production process, and the corrugated paper sewage mainly comes from the working procedures of pulping, jordaning, screening, concentrating, papermaking and the like in the production process. The sewage contains a large amount of fine fibers, fillers and auxiliary agents, and also contains some suspended matters and a large amount of reducing substances (COD).

The sewage amount produced in the process of making paper by corrugated paper is large, the pollutant types are many, and the concentration is large. The sewage equipment can meet the sewage treatment requirement under the normal condition, but under the condition that the equipment breaks down or a large amount of sewage is accidentally produced in the production process, the equipment cannot normally work or cannot be treated in time, so that the sewage in the underground sewage pool is fully discharged to the surrounding environment, and serious harm can be caused to the surrounding environment.

Therefore, the development of the sewage treatment device capable of dealing with a large amount of sudden sewage is of great significance for solving the problem of equipment failure.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, a sewage treatment device is provided.

The utility model provides a sewage treatment device, includes storage system and direct processing system, the storage system is including the effluent water sump, multistage holding vessel and the purifier that communicate in proper order, direct processing system is including the effluent water sump and the purifier that communicate in proper order.

Preferably, the purification device comprises a stirring treatment tank, a primary filter and a filtering storage tank which are sequentially communicated through pipelines to form a circulation loop, the stirring treatment tank is respectively communicated with the multistage storage tank and the sewage tank, and the filtering storage tank is communicated with a secondary filter.

Preferably, the multistage holding vessel includes one-level holding vessel, second grade holding vessel and the tertiary holding vessel that communicates in proper order, one-level holding vessel and effluent water sump intercommunication, tertiary holding vessel and stirring processing pond intercommunication.

Preferably, a stirrer is installed in the stirring treatment tank.

Preferably, a first pneumatic diaphragm pump is arranged between the first-stage storage tank and the sewage pool, a water inlet of the first pneumatic diaphragm pump is communicated with the sewage pool, and a water outlet of the first pneumatic diaphragm pump is communicated with the first-stage storage tank.

Preferably, a section of pipeline is shared between the third-stage storage tank and the stirring treatment pool and between the third-stage storage tank and the second-stage filter, a second pneumatic diaphragm pump is arranged on the pipeline, a water inlet of the second pneumatic diaphragm pump is communicated with the third-stage storage tank, and a water outlet of the second pneumatic diaphragm pump is communicated with the stirring treatment pool and the second-stage filter respectively.

Preferably, a third pneumatic diaphragm pump is arranged between the stirring treatment pool and the primary filter, a water inlet of the third pneumatic diaphragm pump is communicated with the stirring treatment pool, and a water outlet of the third pneumatic diaphragm pump is communicated with the primary filter.

Preferably, the effluent water sump is provided with a first floating ball limit switch, the primary storage tank is provided with a second floating ball limit switch, the normally open contact of the first floating ball limit switch, the normally closed contact of the second floating ball limit switch, the transfer switch, the normally closed contact of the time relay and the intermediate relay form a loop, the normally open contact of the intermediate relay is connected in parallel to two sides of the normally open contact of the first floating ball limit switch, the time relay and the electromagnetic valve are respectively connected in parallel to two sides of the intermediate relay, and the electromagnetic valve is electrically connected to the first pneumatic diaphragm pump.

Advantageous effects

Above-mentioned sewage treatment plant has following effect:

1. the utility model provides a sewage treatment device which can deal with a large amount of sudden sewage, a multi-stage storage tank is added and is communicated with a sewage pool, and a valve and a supercharging device in the device are reasonably controlled by a control circuit system, so that the multi-stage storage tank stores the redundant sewage which can not be accommodated by the sewage pool, the sewage storage capacity is improved, and the sewage of the sewage pool is prevented from overflowing and being discharged to the surrounding environment;

2. polyaluminium chloride and polyacrylamide are added into the stirring treatment tank, and suspended matters in the sewage are effectively removed and the COD concentration is reduced by the stirring action of the blades of the stirrer;

3. the primary filter and the secondary filter are arranged to remove fine fibers and fillers in sewage, and the fine fibers and the fillers can be collected and then sent to a pulping process, so that resource recycling is realized, and the method has good environmental benefits.

Drawings

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

fig. 2 is a control circuit diagram of an embodiment of the present invention;

the figures are labeled as follows:

1-a sewage tank, 2-a stirring treatment tank, 21-a stirrer, 3-a primary filter, 4-a filtering storage tank, 5-a secondary filter, 61-a primary storage tank, 62-a secondary storage tank, 63-a tertiary storage tank, 71-a first pneumatic diaphragm pump, 72-a second pneumatic diaphragm pump, 73-a third pneumatic diaphragm pump, 81-a first ball valve, 82-a second ball valve, 83-a third ball valve, 84-a fourth ball valve, 85-a fifth ball valve, 91-a first floating ball limit switch and 92-a second floating ball limit switch.

Detailed Description

Fig. 1 shows the structure schematic diagram of the sewage treatment device of the utility model. This sewage treatment plant is including storage system and direct processing system, and storage system is including effluent water sump 1, multistage holding vessel and the purifier that communicate in proper order, and direct processing system is including effluent water sump 1 and the purifier that communicate in proper order. The purification device comprises a stirring treatment tank 2, a primary filter 3 and a filtering storage tank 4 which are sequentially communicated through pipelines to form a circulation loop, the stirring treatment tank 2 is respectively communicated with a multistage storage tank and a sewage tank 1, and the filtering storage tank 4 is communicated with a secondary filter 5. The multi-stage storage tank includes a primary storage tank 61, a secondary storage tank 62, and a tertiary storage tank 63. The main path formed by the water outlet pipeline of the sewage tank 1, the water outlet pipeline of the multi-stage storage tank, the water outlet pipeline of the filtering storage tank 4, the water inlet pipeline of the secondary filter 5 and the water inlet pipeline of the stirring treatment tank 2 is communicated through a four-way joint. A first ball valve 81 is arranged between the water outlet pipeline of the sewage tank 1 and the four-way joint, a second ball valve 82 is arranged between the water outlet pipeline of the filtering and storing tank 4 and the four-way joint, a third ball valve 83 is arranged on the water inlet pipeline of the stirring and treating tank 2, a fourth ball valve 84 is arranged on the water inlet pipeline of the secondary filter 5, and a fifth ball valve 85 is arranged between the water outlet pipeline of the multistage storing tank and the four-way joint. A first pneumatic diaphragm pump 71 is arranged between the sewage pool 1 and the primary storage tank 61, a water inlet of the first pneumatic diaphragm pump 71 is communicated with the sewage pool 1, and a water outlet of the first pneumatic diaphragm pump 71 is communicated with the primary storage tank 61 and is used for conveying sewage from the sewage pool 1 to the primary storage tank 61; a section of pipeline is shared between the third-stage storage tank 63 and the stirring treatment tank 2 and between the third-stage storage tank 63 and the second-stage filter 5, a second pneumatic diaphragm pump 72 is arranged on the pipeline, a water inlet of the second pneumatic diaphragm pump 72 is communicated with the third-stage storage tank 63, and a water outlet of the second pneumatic diaphragm pump 72 is respectively communicated with the stirring treatment tank 2 and the second-stage filter 5 and is used for conveying sewage from the third-stage storage tank 63 to the stirring treatment tank 2 and conveying sewage from the filtering storage tank 4 to the second-stage filter 5; a third pneumatic diaphragm pump 73 is arranged between the stirring treatment pool 2 and the primary filter 3, the water inlet of the third pneumatic diaphragm pump 73 is communicated with the stirring treatment pool 2, and the water outlet of the third pneumatic diaphragm pump 73 is communicated with the primary filter 3 and used for conveying sewage to the primary filter 3 by the stirring treatment pool 2.

If the sewage pool 1 cannot contain enough sewage in case of emergency, the sewage in the underground sewage pool 1 is discharged to the surrounding environment in a full-flow manner, and pollution is caused. The conventional method for solving the problems is to expand the sewage tank 1, but the expansion of the sewage tank 1 needs to excavate a foundation, so the construction cost is high, and the problems can not be solved well, therefore, the utility model is designed with two sets of sewage treatment systems, namely a storage system and a direct treatment system, wherein the direct treatment system is used for directly conveying sewage to the purification device for treatment when the treatment capacity of the purification device can meet the sewage amount generated in the production process of corrugated boards; the storage system is based on a direct treatment system, a multi-stage storage tank is additionally arranged, when the sewage amount generated in the production process of corrugated boards exceeds the treatment amount of the purification device, valves and supercharging equipment in the device are reasonably controlled through a control circuit system, so that the multi-stage storage tank stores redundant sewage which cannot be contained in the sewage pool 1, the sewage storage amount is improved, a redundant design is adopted, the device can still normally work when certain parts in the device break down, the failure probability is reduced, and the integral reliability of the sewage treatment device is improved.

In order to effectively remove suspended matters in sewage, reduce COD concentration and lighten the load of suspended matters and organic pollutants of inlet water of a subsequent biological treatment process, the sewage treatment device adopts a coagulation treatment method, and chemical agents are added into sewage to destroy the stability of colloids, so that the colloids and fine suspended matters in the sewage are gathered into flocculating constituents which are easy to separate. Adding polyaluminium chloride and polyacrylamide into the stirring treatment tank 2, fully mixing a coagulant with the sewage by the stirring action of blades of the stirrer 21, generating colloid by hydrolysis of the polyaluminium chloride, destabilizing organic matters, colloid and fine suspended matters in the sewage to generate coagulation, generating fine particles, wherein the polyacrylamide is a high-molecular flocculant, the fine particles rapidly grow, grow and precipitate under the action of the polyacrylamide, and finally pumping the sewage to the primary filter 3 for filtering.

The first-stage filter 3 removes fillers, fine fibers and suspended matters in the sewage, and reduces the treatment load of subsequent treatment equipment. The sewage after the filtration of the first-stage filter 3 freely flows down to the filtering storage pool 4 for standing and precipitation, under the action of gravity, fine solid impurities mixed in the sewage gradually sink to the bottom of the filtering storage pool 4, and the supernatant in the filtering storage pool 4 is pumped to the second-stage filter 5 for secondary filtration, and is discharged to a water body or recycled after reaching the discharge standard.

Because the paper making process for producing corrugated paper has low requirements on water quality, the treated sewage can be conveyed back to the paper making production line for recycling, and the utilization rate of water resources is improved. The substances retained by the primary filter 3 are mainly fine paper fibers and filler added in the papermaking process, and the fine paper fibers and the filler are collected and then sent to the pulping process for reuse in production, so that not only is the resource reuse realized, but also the pollution of sewage and solid waste to the surrounding environment is reduced, and the environment benefit is good.

Fig. 2 shows a control circuit diagram of the sewage treatment device of the utility model. SW1 is a change-over switch, KA is an intermediate relay, KA11 is a normally open contact of the intermediate relay, KT is a time relay, KT11 is a normally closed contact of the time relay for time delay closing, Y is an electromagnetic valve, and the electromagnetic valve Y is electrically connected with the first pneumatic diaphragm pump 71. Wherein change-over switch SW1, the normally open contact of first floater limit switch 91, the normally closed contact of second floater limit switch 92, the time delay closed normally closed contact KT11 and the auxiliary relay KA of time relay KT constitute the return circuit, and the normally open contact KA11 of auxiliary relay KA is parallelly connected in the both sides of the normally open contact of first floater limit switch 91, and time relay KT and solenoid valve Y connect in parallel respectively in the both sides of auxiliary relay KA.

The change-over switch is shifted to the position of 2 from 1, the device enters a to-be-operated state, the water level of the underground sewage tank 1 reaches the position of the action of the first floating ball limit switch 91, the first floating ball limit switch 91 is closed, the intermediate relay is electrified, meanwhile, the normally-open contact KA11 of the intermediate relay KA is changed into a normally-closed contact, the intermediate relay KA is kept electrified all the time to form self-locking, the time relay KT and the electromagnetic valve Y are electrified simultaneously, the first pneumatic diaphragm valve starts to operate and starts to pump sewage, when the water level of the three-stage storage tank 63 does not reach the position of the action of the second floating ball switch and the pumping time reaches the time set by the time KT relay, the normally-closed contact KT11 of the time relay KT is changed into the normally-open contact, the electromagnetic valve Y is powered off, the first pneumatic diaphragm pump 71 stops operating, and the sewage tank 1 stops pumping water to the multi-stage storage tank; when the water level of the third-stage storage tank 63 reaches the position of the second float switch action and the pumping time does not reach the time set by the time relay KT, the second float switch action is changed from the normally closed contact to the normally open contact, the electromagnetic valve Y is powered off, the first pneumatic diaphragm pump 71 stops working, and the sewage pool 1 stops pumping water to the multi-stage storage tanks.

The specific working principle is as follows:

the method comprises the following steps: closing the first ball valve 81, the second ball valve 82 and the fourth ball valve 84, opening the third ball valve 83 and the fifth ball valve 85, starting the second pneumatic diaphragm pump 72 to pump the sewage from the multistage storage tank to the stirring treatment tank 2, closing the second pneumatic diaphragm pump 72 when the sewage reaches the set capacity of the stirring treatment tank 2, adding a medicament to the stirring treatment tank 2, and starting the stirrer 21 to perform stirring treatment;

step two: after the stirring treatment is finished, closing the third ball valve 83 and the fifth ball valve 85, starting the third pneumatic diaphragm pump 73 to pump the sewage to the first-stage filter 3 for filtering, and allowing the filtered water to flow into the filtering storage tank 4 for storage and discharge;

step three: opening the second ball valve 82 and the fourth ball valve 84, starting the second pneumatic diaphragm pump 72 to pump the water in the filtering storage tank 4 to the secondary filter 5 for secondary filtering, and directly discharging the treated sewage which reaches the discharge standard;

step four: and (4) finishing the treatment process, completing one sewage treatment period, and repeatedly circulating.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a sewage treatment device, its characterized in that includes storage system and direct processing system, the storage system is including effluent water sump (1), multistage holding vessel and the purifier who communicates in proper order, direct processing system is including effluent water sump (1) and the purifier who communicates in proper order.

2. The sewage treatment device according to claim 1, wherein the purification device comprises an agitation treatment tank (2), a primary filter (3) and a filtration storage tank (4) which are sequentially communicated through a pipeline to form a circulation loop, the agitation treatment tank (2) is respectively communicated with the multistage storage tank and the sewage tank (1), and the filtration storage tank (4) is communicated with a secondary filter (5).

3. The sewage treatment device according to claim 2, wherein said multi-stage storage tank comprises a primary storage tank (61), a secondary storage tank (62) and a tertiary storage tank (63) which are sequentially communicated, said primary storage tank (61) is communicated with the sewage tank (1), and said tertiary storage tank (63) is communicated with the agitation treatment tank (2).

4. An apparatus for treating wastewater according to claim 2, characterized in that an agitator (21) is installed in the agitation treatment tank (2).

5. A sewage treatment plant according to claim 3, characterised in that a first pneumatic membrane pump (71) is arranged between said primary storage tank (61) and said sewage tank (1), the inlet of said first pneumatic membrane pump (71) being in communication with said sewage tank (1), the outlet of said first pneumatic membrane pump (71) being in communication with said primary storage tank (61).

6. The wastewater treatment device according to claim 3, wherein a section of pipeline is shared between the third-stage storage tank (63) and the agitation treatment tank (2) and between the third-stage storage tank (63) and the second-stage filter (5), and a second pneumatic diaphragm pump (72) is arranged on the pipeline, a water inlet of the second pneumatic diaphragm pump (72) is communicated with the third-stage storage tank (63), and a water outlet of the second pneumatic diaphragm pump (72) is communicated with the agitation treatment tank (2) and the second-stage filter (5), respectively.

7. A sewage treatment plant according to claim 2, characterized in that a third pneumatic diaphragm pump (73) is arranged between said agitation treatment tank (2) and said primary filter (3), the water inlet of said third pneumatic diaphragm pump (73) is connected to said agitation treatment tank (2), and the water outlet of said third pneumatic diaphragm pump (73) is connected to said primary filter (3).

8. The sewage treatment device according to claim 5, wherein said sewage tank (1) is provided with a first floating ball limit switch (91), said primary storage tank (61) is provided with a second floating ball limit switch (92), said normally open contact of said first floating ball limit switch (91), said normally closed contact of said second floating ball limit switch (92), said transfer switch, said normally closed contact of said time relay and said intermediate relay form a loop, said normally open contact of said intermediate relay is connected in parallel to both sides of said normally open contact of said first floating ball limit switch (91), said time relay and said solenoid valve are respectively connected in parallel to both sides of said intermediate relay, said solenoid valve is electrically connected to said first pneumatic diaphragm pump (71).