CN211111609U

CN211111609U - Multistage filtration edulcoration system of municipal administration sewage

Info

Publication number: CN211111609U
Application number: CN201922147798.3U
Authority: CN
Inventors: 张自美; 王磊
Original assignee: Zhongtuo Construction Co ltd
Current assignee: Zhongtuo Construction Co ltd
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-07-28
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses a multistage filtration edulcoration system of municipal administration sewage, including the filtering ponds, the filtering ponds are connected with the grit chamber, the grit chamber is connected with primary sedimentation tank, primary sedimentation tank is connected with the activated sludge system, the activated sludge system is connected with the secondary sedimentation tank, the secondary sedimentation tank is connected with the neutralization pond, the neutralization pond is connected with A2O process system, vertically in the filtering ponds be provided with the baffle, baffle upper portion is solid structure, the baffle lower part is hollow out construction, the baffle both sides are provided with the filter basket, be provided with the through-hole that supplies sewage to flow through on one lateral wall of filter basket, the lateral wall that the filter basket has the through-hole is laminated with the baffle, be equipped with the filtering stone in the filter basket, be provided with the coarse strainer below the water inlet of filtering ponds, be provided with the fine filter screen below the delivery port of filtering ponds, be provided with resin filter between activated sludge system and the secondary sedimentation tank; the utility model discloses can effectively filter the impurity in the sewage, improve the treatment effect to sewage.

Description

Multistage filtration edulcoration system of municipal administration sewage

Technical Field

The utility model belongs to the technical field of sewage treatment and specifically relates to a multistage filtration edulcoration system of municipal sewage.

Background

Municipal sewage includes domestic sewage, industrial wastewater and runoff sewage etc. in the city, and municipal sewage contains pollutants such as a large amount of suspended solids, organic matter, nitrogen, phosphorus, so municipal sewage must can discharge after handling up to standard.

In the current municipal sewage treatment system, only be provided with filtration system at the entrance for get rid of the great impurity of volume in the sewage, but some less impurity of volume will be along with in sewage gets into subsequent processing system, influence the treatment effect of sewage.

Disclosure of Invention

The utility model aims at providing a municipal administration sewage's multistage filtration edulcoration system, this system can effectively filter the impurity in the sewage, improves the treatment effect to sewage.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a multi-stage filtration and impurity removal system for municipal sewage comprises a filter tank, wherein the filter tank is connected with a grit chamber, the grit chamber is connected with a primary sedimentation tank, the primary sedimentation tank is connected with an activated sludge system, the activated sludge system is connected with a secondary sedimentation tank, the secondary sedimentation tank is connected with a neutralization tank, the neutralization tank is connected with an A2O process system, a partition plate is vertically arranged in the filter tank and divides the filter tank into two spaces, a water inlet of the filter tank and a water outlet of the filter tank are respectively positioned in the two spaces, the upper part of the partition plate is of a solid structure, the lower part of the partition plate is of a hollow structure, filter baskets are arranged on the two sides of the partition plate, openings of the filter baskets are upward, a through hole for sewage to flow through is arranged on one side wall of each filter basket, the height of each filter basket is higher than or equal to the height of the partition plate part, the side wall, the bottom of the filtering basket is attached to the bottom of the filtering tank, filtering stones are arranged in the filtering basket, a coarse filter screen is arranged below a water inlet of the filtering tank, a fine filter screen is arranged below a water outlet of the filtering tank, the coarse filter screen and the fine filter screen are both located above the filtering basket, a resin filter is arranged between the activated sludge system and the secondary sedimentation tank, and an activated carbon filter is arranged at an outlet of the A2O process system.

Optionally, the bottom of the two side walls of the filtering tank parallel to the partition plate is provided with an opening, the width of the opening is the same as that of the side wall of the filtering tank, the height of the opening is slightly higher than that of the filtering basket, the bottom and the side wall in the filtering tank are provided with a slide way which is perpendicular to the partition plate, the bottom and the side wall of the filtering basket are provided with grooves matched with the slide way, the filtering basket is connected with the filtering tank in a sliding manner, one end, close to the opening, of the filtering basket is provided with a sealing element, the sealing element is attached to the side wall of the opening, and the outer side.

Optionally, the filter stone is medical stone or zeolite.

Optionally, a W-shaped groove for storing sand is formed in the bottom of the grit chamber, a sand discharge pipeline is arranged at the bottom of the W-shaped groove, and a sand discharge valve is arranged on the sand discharge pipeline.

Optionally, a first dosing tank is arranged at the top of the primary sedimentation tank, a flocculating agent is filled in the first dosing tank, a V-shaped groove for storing sludge is formed in the bottom of the primary sedimentation tank, a sewage discharge pipeline is arranged at the bottom of the V-shaped groove, and a sewage discharge valve is arranged on the sewage discharge pipeline.

Optionally, a second dosing tank is arranged at the top of the secondary sedimentation tank, a sodium hydroxide solution is filled in the second dosing tank, a sedimentation groove for storing heavy metal sediments is arranged at the bottom of the secondary sedimentation tank, a discharge pipeline is arranged at the bottom of the sedimentation groove, and a discharge valve is arranged on the discharge pipeline.

Optionally, a third dosing tank is arranged at the top of the neutralization tank, and hydrochloric acid for reducing the pH value of the sewage is filled in the third dosing tank.

The utility model discloses a multistage filtration edulcoration system of municipal administration sewage has following advantage:

(1) the coarse filter screen in the filter tank can filter out the impurity with larger volume, the filter stone has certain filtering action on the impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in the sewage, the concentration of the pollutants in the sewage can be reduced, and the fine filter screen can filter out the impurity with smaller volume, so that the influence on the operation of subsequent treatment equipment is prevented.

(2) The resin filter adopts ion exchange resin, can filter partial ion pollutants in the sewage, and creates favorable conditions for subsequent precipitation treatment and biological treatment.

(3) The activated carbon filter can carry out final filtration on the treated sewage, remove residual trace pollutants in the sewage and improve the treatment effect of the sewage.

(4) Filter basket sliding connection in filtering ponds bottom, the change of the convenient filter stone.

Drawings

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

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

Fig. 3 is a schematic view of the structure of the separator.

Fig. 4 is a schematic view of the connection of the filter basket to the filter tank.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in figures 1-4, a municipal sewage multistage filtration and impurity removal system comprises a filtration tank 1, a partition plate 22 is vertically arranged in the filtration tank 1, the partition plate 22 divides the filtration tank 1 into two spaces, a water inlet of the filtration tank 1 and a water outlet of the filtration tank 1 are respectively positioned in the two spaces, the upper part of the partition plate 22 is of a solid structure, the lower part of the partition plate 22 is of a hollow structure, filtration baskets 23 are arranged at two sides of the partition plate 22, openings of the filtration baskets 23 are upward, a side wall of each filtration basket 23 is provided with a through hole for sewage to flow through, the height of each filtration basket 23 is higher than or equal to the height of the hollow part of the partition plate 22, the side wall of each filtration basket 23 with the through hole is attached to the partition plate 22, the bottoms of two parallel side walls of the filtration tank 1 and the partition plate 22 are provided with openings, the widths of the openings are the same as the widths of the side walls of the filtration tank 1, the slide way 26 is perpendicular to the partition board 22, the bottom and the side wall of the filtering basket 23 are provided with grooves 27 matched with the slide way 26, the filtering basket 23 is connected with the filtering tank 1 in a sliding manner, one end, close to the opening, of the filtering basket 23 is provided with a sealing element 24, the sealing element 24 is attached to the side wall of the opening, the sealing element 24 can prevent sewage from leaking, the outer side of the sealing element 24 is provided with a handle 25, the sliding connection structure of the filtering basket 23 and the filtering tank 1 can facilitate the replacement of the filtering stone 10, the filtering stone 10 is arranged in the filtering basket 23, a coarse filter screen 9 is arranged below a water inlet of the filtering tank 1, a fine filter screen 11 is arranged below a water outlet of the filtering tank 1, the coarse filter screen 9 and the fine filter screen 11 are both positioned above the filtering basket 23, in the embodiment, the filtering stone 9 is medical stone, the sewage needs to bypass the partition board 22, the time for sewage to flow through the filter stone 10 is increased to improve the filtering effect, and the filter basket 23 can be pulled out from the bottom of the filtering tank 1 when the filter stone 10 needs to be replaced.

The filtration tank 1 is connected with a grit chamber 2, the bottom of the grit chamber 2 is provided with a W-shaped groove 16 for storing sand, the bottom of the W-shaped groove 16 is provided with a sand discharge pipeline 17, the sand discharge pipeline is provided with a sand discharge valve, the grit chamber 2 is connected with a primary sedimentation tank 3, the top of the primary sedimentation tank 3 is provided with a first dosing tank 12, the first dosing tank 12 is internally provided with a flocculating agent, the bottom of the primary sedimentation tank 3 is provided with a V-shaped groove 18 for storing sludge, the bottom of the V-shaped groove 18 is provided with a sewage discharge pipeline 19, the sewage discharge pipeline is provided with a sewage discharge valve, the primary sedimentation tank 3 is connected with an activated sludge system 4, the activated sludge system 4 is connected with a secondary sedimentation tank 6, the top of the secondary sedimentation tank 6 is provided with a second dosing tank 13, the second dosing tank 13 is internally provided with a sodium hydroxide solution, the bottom of the secondary sedimentation tank 6 is provided, the sewage treatment system is characterized in that a discharge valve is arranged on a discharge pipeline, ion exchange resin 5 is arranged between the activated sludge system 4 and the secondary sedimentation tank 6, the secondary sedimentation tank 6 is connected with a neutralization tank 7, a third dosing tank 14 is arranged at the top of the neutralization tank 7, hydrochloric acid for reducing the pH value of sewage is filled in the third dosing tank 14, the neutralization tank 7 is connected with an A2O process system 8, an activated carbon filter 15 is arranged at the outlet of the A2O process system 8, and a water suction pump and an isolation valve are arranged between adjacent tanks or between adjacent tanks and systems.

The utility model discloses a work flow as follows: when the system is in a working state, the adjacent tanks are communicated with each other or the adjacent tanks are communicated with the system, municipal sewage enters the filtering tank 1, the coarse filter 9 filters out impurities with large volume in the sewage, then the sewage flows through the filtering stone 10, the filtering stone 10 can primarily filter the impurities such as organic matters, nitrogen, phosphorus, suspended matters and the like in the sewage, the concentration of pollutants in the sewage is reduced, the fine filter 11 can filter out impurities with small volume, and the influence of the impurities with small volume on the operation of subsequent equipment is prevented; the sewage enters the grit chamber 2 after passing through the filter tank 1, a regulating valve is arranged between the filter tank 1 and the grit chamber 2, and the regulating valve controls the water inlet flow rate of the grit chamber 2, so that granular impurities with high specific gravity in the sewage are precipitated in the W-shaped groove 16 and can be discharged through a sand discharge pipeline 17; the sewage passing through the grit chamber 2 enters a primary sedimentation tank 3, colloid and floccule organic matters in the sewage react with a flocculating agent in the primary sedimentation tank 3 and then precipitate, and precipitated impurities are accumulated in a V-shaped groove 18 and can be discharged through a sewage discharge pipeline 19; then the sewage enters an activated sludge system 4, the system degrades soluble organic matters in the sewage by using microorganisms, and organic pollutants in the sewage can be treated by using a flocculating agent and the microorganisms; then the sewage passes through the ion exchange resin 5, and partial ion pollutants in the sewage can be filtered by the ion exchange resin 5; then the sewage enters a secondary sedimentation tank 6, heavy metal ions in the sewage are combined with hydroxide radicals in the secondary sedimentation tank 6 to form sediment, the sediment is accumulated in a sedimentation groove 20 and then discharged through a discharge pipeline 21, the pH value of the sewage is higher due to the addition of sodium hydroxide and needs to enter a neutralization tank 7 to be neutralized with hydrochloric acid, the pH value of the sewage is reduced, the neutralized sewage enters an A2O process system 8 to remove nitrogen and phosphorus, and then is discharged through an activated carbon filter 15, and the activated carbon filter 15 can filter out residual pollutants and toxic substances in the sewage.

The above-described embodiments are only some embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

Claims

1. The utility model provides a multistage filtration edulcoration system of municipal administration sewage, includes the filtering ponds, and the filtering ponds are connected with the grit chamber, and the grit chamber is connected with a sedimentation tank, and a sedimentation tank is connected with the activated sludge system, and the activated sludge system connection has the secondary sedimentation tank, and the secondary sedimentation tank is connected with the neutralization pond, and the neutralization pond is connected with A2O processing system, its characterized in that: a partition board is vertically arranged in the filtering tank, the partition board divides the filtering tank into two spaces, a water inlet of the filtering tank and a water outlet of the filtering tank are respectively positioned in the two spaces, the upper part of the partition board is of a solid structure, the lower part of the partition board is of a hollow structure, filtering baskets are arranged on two sides of the partition board, openings of the filtering baskets are upward, a through hole for sewage to flow through is arranged on one side wall of each filtering basket, the height of each filtering basket is higher than or equal to the height of the hollow part of the partition board, the side wall of each filtering basket with the through hole is attached to the partition board, the rest side wall of each filtering basket is attached to the inner wall of the filtering tank, the bottom of each filtering basket is attached to the bottom of the filtering tank, filtering stones are arranged in the filtering baskets, a coarse strainer is arranged below the water inlet of the filtering tank, a fine filter screen is arranged below, an activated carbon filter is arranged at the outlet of the A2O process system.

2. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: the bottom of the both sides wall that the filtering ponds are parallel with the baffle is provided with the opening, the opening width is the same with the width of filtering ponds lateral wall, open-ended height and a little higher than the height of filtering the basket, be provided with the slide on bottom in the filtering ponds and the lateral wall, the slide sets up with the baffle is perpendicular, be provided with the recess that matches with the slide on the bottom of filtering the basket and the lateral wall, filter basket and filtering ponds sliding connection, the one end that the filtering basket is close to the opening is provided with sealing element, sealing element and the laminating of open-ended lateral wall, sealing element's the outside is provided with the handle.

3. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: the filter stone is medical stone or zeolite.

4. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: the sand basin bottom is provided with the W type recess that is used for depositing the grit, and W type recess bottom is provided with the sand discharge pipe way, is provided with the sand discharge valve on the sand discharge pipe way.

5. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: the top of the primary sedimentation tank is provided with a first dosing tank, a flocculating agent is arranged in the first dosing tank, the bottom of the primary sedimentation tank is provided with a V-shaped groove used for storing sludge, the bottom of the V-shaped groove is provided with a sewage discharge pipeline, and a sewage discharge valve is arranged on the sewage discharge pipeline.

6. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: the secondary sedimentation tank top is provided with the second dosing tank, is equipped with the sodium hydroxide solution in the second dosing tank, and secondary sedimentation tank bottom is provided with the sediment recess of depositing heavy metal precipitate, and sediment recess bottom is provided with discharge pipe, is provided with the discharge valve on the discharge pipe.

7. The municipal sewage multistage filtration edulcoration system of claim 1, wherein: and a third dosing tank is arranged at the top of the neutralization tank, and hydrochloric acid for reducing the pH value of the sewage is filled in the third dosing tank.