Sludge water treatment system applied to waterworks

Abstract

The utility model discloses a sludge water treatment system applied to a waterworks, which comprises a horizontal flow sedimentation tank, a sludge discharge vehicle, a sludge discharge channel, a conditioning tank, a hot-pressing filtration dehumidifying and drying device and a sludge collection tank, the sludge discharge vehicle is arranged on the horizontal flow sedimentation tank and used for discharging sludge water into the sludge discharge channel on the periphery of the horizontal flow sedimentation tank, and the conditioning tank is arranged on the sludge discharge channel. Sludge water is sequentially fed into a conditioning tank and hot-pressing filtration dehumidifying and drying equipment through a sludge discharge channel for dehydration treatment, and sludge cakes with the water content being about 35% are formed through treatment of the hot-pressing filtration dehumidifying and drying equipment and enter a sludge collection pool to be collected and transported outwards for disposal; the solid content of sludge water discharged by the sludge discharging vehicle is larger than 3%. The sludge discharge vehicle with the sludge water solid content larger than 3% is adopted, and the sludge discharge channel of the horizontal flow sedimentation tank of the waterworks is fully utilized, so that sludge water treatment buildings such as a collection tank and a concentration tank do not need to be newly built, the treatment specification of a dehydrator is reduced, the water quality risk of recycled water is avoided, the construction period is short, and about 50%-80% of land occupation and investment of a sludge water treatment system can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sludge water treatment system applied to a waterworks. BACKGROUND

[0002] Before the mid-1990s, there were few complete sludge water treatment units in domestic waterworks, and most of the sludge water of the waterworks was basically directly discharged. After the mid-1990s, in order to meet the environmental protection acceptance requirements, the sludge water treatment units were considered simultaneously in the design and construction of the newly-built waterworks in China, but most of them were basically in idle state after completion. Nowadays, in the face of the increasingly severe ecological environment and water resource shortage problem, with the increasing size of the water supply plant under construction, the pollution to the environment and the waste of water resources caused by direct discharge are gradually paid attention to, and the sludge water treatment of the waterworks is put back on the agenda. Direct discharge of sludge water of the waterworks into rivers, lakes not only has the policy risk of environmental protection violation, but also harms the ecological environment. Therefore, the reasonable treatment and disposal of the sludge water of the waterworks is extremely important, and it is necessary to carry out the construction of the sludge water treatment project of the waterworks.

[0003] The sludge water of the waterworks mainly comes from the sludge water of the flocculation tank and the sedimentation tank and the backwashing water of the filter tank, especially the sludge water of the sedimentation tank, the concentration of which is as high as 1000 mg / L or more. If these sludge waters are directly discharged into rivers, lakes and other water bodies without treatment, not only the water resources are wasted and the water quality of the water bodies is deteriorated, but also the sludge and blockage of some river channels and lakes are easily caused, which has a destructive effect on the water environment. At present, the phenomenon of "paying attention to water and ignoring sludge" is common in domestic waterworks, and most of the waterworks do not reserve land for sludge water treatment projects in planning and construction, and do not have the ability to treat sludge water. It is difficult to build a sludge water treatment system within a limited period. At the same time, because the design of the sludge water treatment system started late, the design institute and the user have little experience, so there are different opinions in the selection of the sludge water treatment system.

[0004] The "Outdoor Water Supply Design Standard" (GB50013-2018) makes corresponding provisions for the treatment of sludge water from waterworks, and requires that the water quality of sludge water discharged into rivers, ditches and other natural water bodies should meet the relevant provisions of the current national standard "Integrated Wastewater Discharge Standard" GB8978. The environmental protection department also clearly points out in the completion of the environmental protection acceptance opinion of the waterworks construction project that the sludge wastewater generated in the production process should be treated and discharged after reaching the standard. The "National Water Saving Action Plan" issued by the National Development and Reform Commission and the Ministry of Water Resources in April 2019 clearly proposes that the water resource utilization efficiency should be comprehensively improved to guarantee the national water safety and promote the high-quality development of the country, and the reuse rate of industrial water should be greater than 91%. Therefore, it is urgent to seek a sludge water treatment system that saves land occupation, is energy-efficient, reduces investment and operation costs, and guarantees water supply quality.

[0005] The utility model patent with the patent authorization announcement number CN 215288108 U discloses a sludge water treatment system for waterworks, which comprises a mixing device, a flocculation tank, a sedimentation device, a thickening device, a sludge lifting device, a dewatering device and a conveying device. The mixing device comprises a mixing pipe, an electromagnetic flowmeter, a pipeline mixer and a water inlet valve. One end of the mixing pipe is communicated with the flocculation tank. The electromagnetic flowmeter is a conventional electromagnetic flowmeter arranged on the mixing pipe to detect the flow rate of the sludge water in the mixing pipe. The pipeline mixer is a micro-resistance pipeline mixer with two ends connected to the mixing pipe to add flocculating agent into the mixing pipe. The water inlet valve is arranged at the tail end of the mixing pipe to control the opening and closing of the mixing pipe. The sludge water is collected and treated, then enters the micro-resistance mixer, and the flocculating agent is added for hydraulic mixing. Then, the sludge water enters the flocculation tank for flocculation, and then enters the inclined plate thickening tank for solid-liquid separation, thickening and sedimentation. The supernatant is collected by the supernatant collecting tank and then directly discharged or recycled. The bottom sludge is concentrated by the mud scraper and then scraped into the sludge storage tank. The concentrated sludge in the sludge storage tank is lifted by the sludge lifting pipe to the sludge storage tank for further concentration. The concentrated sludge is self-flowed into the screw machine for dewatering. The dewatered sludge is conveyed by the screw conveyor to the sludge storage bin for storage and transportation. This method has a complex treatment structure, requires multiple sedimentation and thickening, has a large land occupation area, and has a high use cost, which cannot be applied to the transformation of other waterworks.

[0006] Therefore, the present inventors propose the following technical solutions. Utility model content:

[0007] The utility model aims at overcoming the defects of the prior art and provides a sludge water treatment system applied to waterworks.

[0008] To solve the above technical problems, the utility model adopts the following technical scheme: A kind of sludge water treatment system applied to waterworks, it include: horizontal flow sedimentation tank, sludge car, sludge channel, conditioning jar, hot pressure filtration dehumidification drying equipment and sludge collecting tank, wherein, sludge car is arranged on horizontal flow sedimentation tank and is used to discharge sludge water to the sludge channel of the periphery of horizontal flow sedimentation tank, sludge water is sent into conditioning jar and hot pressure filtration dehumidification drying equipment in turn by sludge channel and is treated by dewatering, and the sludge cake with moisture content of about 35% formed by hot pressure filtration dehumidification drying equipment treatment enters sludge collecting tank and is collected and transported for disposal;The solid content of sludge water discharged by the sludge car is greater than 3%.

[0009] Further, in the above technical solution, a transmission pipeline is arranged between the sludge channel and the conditioning jar.

[0010] Further, in the above technical solution, at least a first valve, a lifting pump, a second valve and a flowmeter are arranged on the transmission pipeline.

[0011] Further, in the above technical solution, the depth of the sludge channel is greater than 0.5 m, and the volume is greater than 5 m 3 .

[0012] Further, in the above technical solution, the conditioning jar, the hot pressure filtration dehumidification drying equipment and the sludge collecting tank are integrated.

[0013] Further, in the above technical solution, the hot pressure filtration dehumidification drying equipment includes, but is not limited to, any one of the following dewatering devices: hot pressure filtration dehumidification drying equipment, full-automatic diaphragm plate-frame dewatering device, plate-frame dewatering device and high-pressure belt-type deep dewatering device.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: in the utility model, the sludge car with solid content of sludge water greater than 3% is used, and the sludge channel of the horizontal flow sedimentation tank of waterworks is fully utilized, so that it is not necessary to newly build sludge water treatment structures such as collection tank and concentration tank, and the processing specification of dewatering machine is reduced, there is no risk of reused water quality, the construction period is short, the land occupation and investment of sludge water treatment system can be reduced by about 50%-80%, and the utility model is suitable for the reconstruction of sludge water treatment system of waterworks using the conventional water treatment process of "coagulation-horizontal flow sedimentation-filtration-disinfection". BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0016] The utility model will be further described below in combination with specific embodiments and drawings.

[0017] See Figure 1As shown, it is a sludge water treatment system applied to a waterworks, which comprises: a horizontal flow sedimentation tank 1, a sludge car 2, a sludge channel 3, a conditioning tank 4, a hot pressure filtration and dehumidification drying device 5 and a sludge collecting tank 6, wherein the sludge car 2 is arranged on the horizontal flow sedimentation tank 1 and is used for discharging sludge water into the sludge channel 3 outside the horizontal flow sedimentation tank 1, the sludge water is sequentially sent into the conditioning tank 4 and the hot pressure filtration and dehumidification drying device 5 through the sludge channel 3 for dewatering treatment, the sludge cake with a water content of about 35% formed by the treatment of the hot pressure filtration and dehumidification drying device 5 enters the sludge collecting tank 6 for collection and external transportation and disposal; the sludge water discharged by the sludge car 3 has a solid content of more than 3%. The sludge car 2 with a solid content of more than 3% in the sludge water is adopted, and the sludge channel 3 of the horizontal flow sedimentation tank 1 of the waterworks is fully utilized, so that it is unnecessary to newly build sludge water treatment buildings such as a collecting tank and a concentration tank, the treatment specification of the dewatering machine is reduced, there is no risk of reused water quality, the construction period is short, the land occupation and investment of the sludge water treatment system can be reduced by about 50%-80%, and the sludge water treatment system is suitable for the reconstruction of a sludge water treatment system of a waterworks adopting a conventional water treatment process of "coagulation-horizontal flow sedimentation-filtration-disinfection".

[0018] A transmission pipeline is arranged between the sludge channel 3 and the conditioning tank 4. At least a first valve 10, a lifting pump 9, a second valve 8 and a flow meter 7 are arranged on the transmission pipeline.

[0019] The depth of the sludge channel 3 is greater than 0.5 m, and the volume is greater than 5 m 3 By adopting the sludge channel 3 with a certain storage volume, the overflow of the sludge water caused by the excessively large instantaneous sludge water amount is prevented.

[0020] The conditioning tank 4, the hot pressure filtration and dehumidification drying device 5 and the sludge collecting tank 6 are integrated into an integrated structure.

[0021] The hot pressure filtration and dehumidification drying device 5 includes but is not limited to any one of a hot pressure filtration and dehumidification drying device, a full-automatic diaphragm plate frame dewatering device, a plate frame dewatering device and a high-pressure belt type deep dewatering device.

[0022] The solid content of the sludge water discharged by the sludge car 2 in the utility model should be more than 3%. For example, a device for collecting and concentrating sludge on a pool bottom to a suction port for sludge discharge is disclosed in Chinese Patent No. CN220968185U, which is applied by the applicant on October 30, 2023, and can meet the requirement that the solid content of the sludge water should be more than 3%.

[0023] In summary, the utility model discloses a work, by sludge car 2 the sludge water in horizontal flow sedimentation tank 1 is extracted and is discharged to sludge ditch 3, of course sludge car 2 discharges the sludge water and contains solid rate 3-5%, again by sludge ditch 3 the sludge water flows into collection, of course sludge ditch 3 should have certain storage capacity, prevent instantaneous sludge water amount too big and lead to sludge water overflow;Further, sludge ditch 3 collects sludge water after, through the lifting pump 9 on transmission pipeline sludge water is extracted into conditioning jar 4 and hot pressure filtration and dewatering drying equipment 5 dewatering treatment, and by first valve 10 and second valve 8 control transmission pipeline's opening and closing and control flow, of course also convenient lifting pump 9 and flowmeter 7 replacement and maintenance;Further, through hot pressure filtration and dewatering drying equipment 5 sludge water dewatering treatment forms the mud cake containing water rate about 35% after, enters the sludge pool 6 collection and external transport disposal.

[0024] The utility model discloses a work, by sludge car 2 the sludge water in horizontal flow sedimentation tank 1 is extracted and is discharged to sludge ditch 3, of course sludge car 2 discharges the sludge water and contains solid rate 3-5%, again by sludge ditch 3 the sludge water flows into collection, of course sludge ditch 3 should have certain storage capacity, prevent instantaneous sludge water amount too big and lead to sludge water overflow;Further, sludge ditch 3 collects sludge water after, through the lifting pump 9 on transmission pipeline sludge water is extracted into conditioning jar 4 and hot pressure filtration and dewatering drying equipment 5 dewatering treatment, and by first valve 10 and second valve 8 control transmission pipeline's opening and closing and control flow, of course also convenient lifting pump 9 and flowmeter 7 replacement and maintenance;Further, through hot pressure filtration and dewatering drying equipment 5 sludge water dewatering treatment forms the mud cake containing water rate about 35% after, enters the sludge pool 6 collection and external transport disposal.

[0025] Of course, the above only for the specific embodiment of the utility model has been, not to limit the utility model implementation range, all equivalent changes or modifications, which are made according to the utility model application patent range described structure, features and principles, should be included in the utility model application patent range.

Claims

1. A sludge water treatment system applied to a waterworks, characterized by, It comprises: The horizontal flow sedimentation tank (1), the sludge removal vehicle (2), the sludge removal channel (3), the conditioning tank (4), the hot pressure filtration and dehumidification drying equipment (5) and the sludge collecting tank (6), wherein the sludge removal vehicle (2) is arranged on the horizontal flow sedimentation tank (1) and is used for discharging sludge water outside the horizontal flow sedimentation tank (1) into the sludge removal channel (3) outside the horizontal flow sedimentation tank (1), the sludge water is sequentially sent into the conditioning tank (4) and the hot pressure filtration and dehumidification drying equipment (5) through the sludge removal channel (3) for dewatering treatment, the sludge cake with a water content of about 35% formed by the hot pressure filtration and dehumidification drying equipment (5) treatment enters the sludge collecting tank (6) for collection and external transportation disposal; the sludge water discharged by the sludge removal vehicle (2) has a solid content of more than 3%.

2. The sludge water treatment system for a water treatment plant according to claim 1, wherein: The transmission pipeline is connected between the sludge removal channel (3) and the conditioning tank (4).

3. The sludge water treatment system for a water treatment plant according to claim 2, wherein: At least a first valve (10), a lifting pump (9), a second valve (8) and a flow meter (7) are arranged on the transmission pipeline.

4. The sludge water treatment system for use in a water treatment plant according to claim 1, wherein: The depth of the sludge removal channel (3) is greater than 0.5 m, and the volume is greater than 5 m³.

5. The sludge water treatment system for use in a water treatment plant according to any one of claims 1 to 4, characterized in that: The conditioning tank (4), the hot pressure filtration and dehumidification drying equipment (5) and the sludge collecting tank (6) are integrated.

6. The sludge water treatment system for use in a water treatment plant according to any one of claims 1 to 4, characterized in that: The hot pressure filtration and dehumidification drying equipment (5) includes but is not limited to any one of the following dewatering equipment: hot pressure filtration and dehumidification drying equipment, full-automatic diaphragm plate frame dewatering equipment, plate frame dewatering equipment and high-pressure belt type deep dewatering equipment.

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