CN217549090U

CN217549090U - Device for improving sludge concentration capacity of sludge storage tank

Info

Publication number: CN217549090U
Application number: CN202221272409.5U
Authority: CN
Inventors: 程琼; 赖相桥; 黄柱钦; 陈乐�
Original assignee: Guangzhou Zhong Ye Sewage Treatment Co ltd; Beikong Technical Service Guangdong Co ltd
Current assignee: Guangzhou Zhong Ye Sewage Treatment Co ltd; Beikong Technical Service Guangdong Co ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2022-10-11
Anticipated expiration: 2032-05-25

Abstract

The utility model relates to a device for improving sludge concentration capacity of a sludge storage tank, which structurally comprises a sludge storage tank, N sludge storage tanks, a sludge inlet pipe network, an overflow pipe network and a sludge discharge pipe network, wherein the N sludge storage tanks are all connected in parallel with the sludge storage tank, sludge outlets of the sludge inlet pipe network extend into the middle lower parts of the sludge storage tank and the sludge storage tanks, and a sludge outlet regulating valve is arranged at the upstream of each sludge outlet on the sludge inlet pipe network; overflow ports of the overflow pipe network extend into the upper parts of the sludge storage tank and the sludge storage tank, and an overflow regulating valve is arranged on the overflow pipe network and positioned at the downstream of each overflow port; the mud discharging port of the mud discharging pipe network extends into the bottoms of the mud storage pool and the mud storage tank, and a mud discharging regulation and control valve is arranged at the downstream of each mud outlet on the mud discharging pipe network. The beneficial effects are that: the water content of the sludge is reduced, the installation cost is low, the construction is rapid, the flexibility is high, the management is convenient, the production continuity is ensured, the medicament cost is saved, and the sludge discharge efficiency is improved.

Description

Device for improving sludge concentration capacity of sludge storage tank

Technical Field

The utility model relates to a sludge treatment technical field especially relates to an improve device that stores up mud pond sludge thickening ability.

Background

The concentration and dehydration capability of the excess sludge of the sewage treatment plant is one of the key factors influencing the sludge water content of the dehydrator and the sludge treatment cost. The sludge concentration process generally comprises three processes of gravity concentration, mechanical concentration and air flotation concentration, and the retention time of muddy water and the sludge feeding and discharging modes of a concentration tank are key factors influencing the gravity concentration effect.

The existing municipal sewage treatment plant generally sets up the standard of the water content of sludge discharged from a sludge storage tank to be 80% during design, extracts excess sludge to the sludge storage tank through an excess sludge pump, and conveys the sludge with the water content of more than 99% in the sludge storage tank to a dehydrator for mechanical dehydration through the sludge pump. The design does not consider the sludge concentration process, the pressure of sludge treatment is completely placed in the treatment capacity of a subsequent dehydrator, the concentration of sludge entering the dehydrator is low, the dehydration effect is poor, the water content of sludge discharged from part of sewage treatment plants is more than 80%, the environment-friendly requirement is not met, and the sludge treatment cost is influenced.

The sludge storage tank which is generally constructed without considering the design of the sludge concentration process has small volume, short sludge retention time and insufficient sludge sedimentation, so that the water content of the sludge entering the dehydrator is high (more than 99 percent), the dehydration effect of the dehydrator is poor and exceeds the sludge discharge environmental protection standard. The moisture content of the sludge entering the dehydrator is high, so that the chemical adding amount of the dehydrator is large, the moisture content of the discharged sludge is high, and the sludge transportation and disposal cost is high. Most of the residual sludge entering the sludge storage tank does not settle in time and flows back to the lift pump room from the overflow port, so that the effective sludge discharge rate is reduced, and the energy consumption is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above problem that prior art exists, provide a device that improves storage mud pond sludge thickening ability.

In order to realize the technical purpose, the technical effect is achieved, the utility model discloses a following technical scheme realizes:

a device for improving the sludge concentration capacity of a sludge storage tank structurally comprises the sludge storage tank, N sludge storage tanks, a sludge inlet pipe network, an overflow pipe network and a sludge discharge pipe network, wherein the N sludge storage tanks are connected with the sludge storage tank in parallel; overflow ports of the overflow pipe network extend into the upper parts of the sludge storage tank and the sludge storage tank, and an overflow regulating valve is arranged on the overflow pipe network and positioned at the downstream of each overflow port; the mud discharging port of the mud discharging pipe network extends into the bottoms of the mud storage pool and the mud storage tank, and a mud discharging regulation and control valve is installed at the downstream of each mud outlet on the mud discharging pipe network.

Wherein, the total export of arranging the mud pipe network communicates with the import of a screw pump, the export of screw pump communicates with the entry of hydroextractor.

The sludge storage tank is characterized by further comprising a backwashing pipe network, the water spray ports of the backwashing pipe network extend into the bottom of the sludge storage tank, a backwashing regulation and control valve is installed at the upper part of each water spray port of the backwashing pipe network, a clear water inlet of the backwashing pipe network is connected with a water suction pump, and a water inlet of the water suction pump is communicated with the clear water tank.

Furthermore, a mud outlet of the mud inlet pipe network is provided with a flow retarder, the flow retarder comprises an installation cylinder with a circular cross section, a plurality of annular flexible rubber rings and a conical bottom plate, the bottom plate is fixedly installed at the bottom end of the installation cylinder, a plurality of hollowed holes are formed in the side wall of the lower portion of the installation cylinder, and the flexible rubber rings are installed on the lower portion of the installation cylinder, so that the plurality of flexible rubber rings are uniformly distributed outside the hollowed holes.

The utility model has the advantages that: by adding the sludge storage tank, the sludge storage tank and the sludge storage pool are matched to alternately inject the sludge and discharge the supernatant, so that the retention time of the sludge is prolonged, the sludge content in the supernatant is reduced, and the water content of the sludge is reduced; a sludge feeding mode is improved, and disturbance of the injected sludge water to the precipitated sludge and the supernatant is reduced; the installation cost is low, and the construction is swift, the flexibility is high, the management of being convenient for, assurance production continuity, saving medicament cost improve the mud discharging efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

FIG. 1 is a schematic view of the apparatus of the present invention;

fig. 2 is a schematic view of the apparatus of the present invention;

the reference numbers in the figures illustrate: the sludge storage device comprises a sludge storage pool 1, a sludge storage tank 2, a sludge inlet pipe network 3, an overflow pipe network 4, a sludge discharge pipe network 5, a backwash pipe network 6, a screw pump 7, a dehydrator 8, a water suction pump 9, a sludge discharge control valve 10, a flow retarder 11, an installation cylinder 12, a flexible rubber ring 13, a bottom plate 14, a hollow hole 15, an overflow control valve 16, a sludge discharge control valve 17 and a backwash control valve 18.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 and fig. 2, the device for improving the sludge concentration capability of the sludge storage tank structurally comprises a sludge storage tank 1, three sludge storage tanks 2, a sludge inlet pipe network 3, an overflow pipe network 4, a sludge discharge pipe network 5, a back flush pipe network 6, a screw pump 7, a dehydrator 8, a water pump 9 and a clean water tank, wherein the sum of the volumes of the three sludge storage tanks 2 is 0.5 to 1 time of the total volume of the sludge storage tank 1, the volumes of the three sludge storage tanks 2 are the same, the three sludge storage tanks 2 are all connected with the sludge storage tank 1 in parallel, and the normal use of the sludge storage tank and other sludge storage tanks is not influenced when any one sludge storage tank 2 is overhauled.

The mud outlet of the mud inlet pipe network 3 extends into the middle lower part of the mud storage pool 1 and the mud storage tank 2, specifically, the height difference between the mud outlet of the mud inlet pipe network 3 and the bottom surface of the mud storage pool 1 is 1/5 to 1/2 of the depth of the mud storage pool 1, and the height difference between the mud outlet of the mud inlet pipe network 3 and the bottom surface of the mud storage tank 2 is 1/5 to 1/2 of the depth of the mud storage tank 2. And a sludge outlet control valve 10 is arranged at the upstream of each sludge outlet on the sludge inlet pipe network 3, and the sludge outlet control valve 10 controls the opening and closing of the sludge outlet, namely, the sludge is controlled to be conveyed to the sludge storage tank 1 or the sludge storage tank 2. Advance mud pipe network 3's play mud mouth and install current retarder 11, current retarder 11 includes that the cross section is circular shape installation section of thick bamboo 12, the annular flexible rubber ring of multi-disc 13 and the bottom plate 14 of a conical surface type, the installation section of thick bamboo is installed on the play mud mouth of advancing mud pipe network 3, bottom plate 14 fixed mounting is in the bottom of installation section of thick bamboo 12, a plurality of fretwork holes 15 have been seted up on the lower part lateral wall of installation section of thick bamboo 12, the lower part at installation section of thick bamboo 12 is installed to multi-disc flexible rubber ring 13, make the even distribution of multi-disc flexible rubber ring 13 in the outside of fretwork hole 15. The muddy water flowing out of the mud outlet is buffered by the flexible rubber ring 13.

The overflow gap of the overflow pipe network 4 extends into the upper parts of the sludge storage tank 1 and the sludge storage tank 2, an overflow regulating valve 16 is arranged at the downstream of each overflow gap on the overflow pipe network 4, and the overflow regulating valve 16 is opened to enable the supernatant in the sludge storage tank 1 and the sludge storage tank 2 to enter the overflow gap and be discharged through the overflow pipe network 4.

The sludge discharge port of the sludge discharge pipe network 5 extends into the bottoms of the sludge storage tank 1 and the sludge storage tank 2, a sludge discharge regulating valve 17 is arranged at the downstream of each sludge outlet on the sludge discharge pipe network 5, the total outlet of the sludge discharge pipe network 5 is communicated with the inlet of a screw pump 7, and the outlet of the screw pump 7 is communicated with the inlet of a dehydrator 8. And opening a sludge discharge regulating valve 17 to ensure that the sludge precipitated in the sludge storage tank 1 and the sludge storage tank 2 enters a sludge discharge port and is discharged into a dehydrator 8 through a sludge discharge pipe network 5 and a screw pump 7 to be mechanically dehydrated.

The water spray ports of the backwashing pipe network 6 extend into the bottom of the sludge storage tank 2, a backwashing regulation and control valve 18 is installed at the upstream of each water spray port of the backwashing pipe network 6, a clean water inlet of the backwashing pipe network 6 is connected with a water suction pump 9, and a water inlet of the water suction pump 9 is communicated with a clean water tank. And (3) starting the water suction pump 9 and the back flush regulating valve 18, pumping the clean water in the clean water tank into the sludge storage tank 2, and flushing the inner wall of the sludge storage tank 2 to avoid sludge accumulation at the bottom of the sludge storage tank 2.

Arranging the mud storage tank into a No. 0 tank, arranging the three mud storage tanks into a No. 1 tank, a No. 2 tank and a No. 3 tank respectively, and numbering the pipe orifices and valves in the mud storage tank and the mud storage tank with the mud storage tank and the mud storage tank.

In this technical scheme, all valves are normal close formula valves, and initial condition is closed state.

The specific working process of this embodiment is as follows:

1. opening a No. 0 sludge discharge regulating valve, injecting sludge water into the No. 0 tank until the liquid level in the No. 0 tank is at the height of the No. 0 overflow port, and closing the No. 0 sludge discharge regulating valve; the No. 1 pool, the No. 2 pool and the No. 3 pool are analogized until the No. 1 pool, the No. 2 pool and the No. 3 pool are filled with muddy water;

2. opening the No. 0 sludge discharge regulating valve again, opening the No. 0 overflow regulating valve, injecting the sludge water into the No. 0 tank again, discharging the clarified supernatant in the No. 0 tank through an overflow port until the supernatant in the No. 0 tank becomes turbid, and closing the No. 0 sludge discharge regulating valve and the No. 0 overflow regulating valve; and adding muddy water in the same way as in the 1 st pool, the 2 nd pool and the 3 rd pool.

3. When the height of the sludge precipitated on the lower layer in the No. 0 tank reaches a preset height (for example, the preset height is 2/3 of the depth of the sludge storage tank or the sludge storage tank), the No. 0 sludge discharge control valve and the No. 0 overflow control valve are kept closed, and the No. 0 sludge discharge control valve is opened to discharge the sludge in the No. 0 tank into the dehydrator for physical dehydration; and discharging the sludge by analogy of the No. 1 pool, the No. 2 pool and the No. 3 pool. This embodiment utilizes 3 to store up mud jar and the cooperation of storing up the mud pond, prolongs muddy water settling time, reduces the moisture content in the mud.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides an improve device that stores up mud pond sludge thickening ability which characterized in that: the device comprises a mud storage pool, N mud storage tanks, a mud inlet pipe network, an overflow pipe network and a mud discharge pipe network, wherein the N mud storage tanks are connected with the mud storage pool in parallel, mud outlets of the mud inlet pipe network extend into the mud storage pool and the middle lower part of the mud storage tank, and a mud outlet regulating valve is arranged on the upper stream of each mud outlet on the mud inlet pipe network; overflow ports of the overflow pipe network extend into the upper parts of the sludge storage tank and the sludge storage tank, and an overflow regulating valve is arranged on the overflow pipe network and positioned at the downstream of each overflow port; the mud discharging port of the mud discharging pipe network extends into the bottoms of the mud storage pool and the mud storage tank, and a mud discharging regulation and control valve is installed at the downstream of each mud outlet on the mud discharging pipe network.

2. The apparatus of claim 1, wherein: the general outlet of the sludge discharge pipe network is communicated with the inlet of a screw pump, and the outlet of the screw pump is communicated with the inlet of the dehydrator.

3. The apparatus of claim 1, wherein: the sum of the volumes of the N sludge storage tanks is 0.5 to 1 time of the total volume of the sludge storage pool.

4. The apparatus of claim 1, wherein: the sludge storage tank is characterized by further comprising a backwashing pipe network, the water spray ports of the backwashing pipe network extend into the bottom of the sludge storage tank, a backwashing regulation and control valve is installed at the upper portion, located at each water spray port, of the backwashing pipe network, a clean water inlet of the backwashing pipe network is connected with a water suction pump, and a water inlet of the water suction pump is communicated with a clean water tank.

5. The apparatus of claim 1, wherein: the mud outlet of the mud inlet pipe network is provided with a flow damper, the flow damper comprises an installation cylinder with a circular cross section, a plurality of annular flexible rubber rings and a conical bottom plate, the bottom plate is fixedly installed at the bottom end of the installation cylinder, the side wall of the lower portion of the installation cylinder is provided with a plurality of hollowed holes, and the flexible rubber rings are installed at the lower portion of the installation cylinder, so that the plurality of flexible rubber rings are uniformly distributed outside the hollowed holes.

6. The apparatus of claim 1, wherein: the height difference between the mud outlet of the mud inlet pipe network and the bottom surface of the mud storage pool is 1/5 to 1/2 of the depth of the mud storage pool, and the height difference between the mud outlet of the mud inlet pipe network and the bottom surface of the mud storage tank is 1/5 to 1/2 of the depth of the mud storage tank.