CN105617733A - Continuous sand filter water purifying device and filter and back flushing method - Google Patents

Continuous sand filter water purifying device and filter and back flushing method Download PDF

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Publication number
CN105617733A
CN105617733A CN201410581028.9A CN201410581028A CN105617733A CN 105617733 A CN105617733 A CN 105617733A CN 201410581028 A CN201410581028 A CN 201410581028A CN 105617733 A CN105617733 A CN 105617733A
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CN
China
Prior art keywords
water
sand
pipe
filter
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201410581028.9A
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Chinese (zh)
Inventor
李树军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HARBIN JINDA ENVIRONMENT ENGINEERING Co Ltd
Original Assignee
HARBIN JINDA ENVIRONMENT ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HARBIN JINDA ENVIRONMENT ENGINEERING Co Ltd filed Critical HARBIN JINDA ENVIRONMENT ENGINEERING Co Ltd
Priority to CN201410581028.9A priority Critical patent/CN105617733A/en
Publication of CN105617733A publication Critical patent/CN105617733A/en
Withdrawn legal-status Critical Current

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Abstract

A continuous sand filter water purifying device and a filter and back flushing method are provided. A traditional sand filter device comprises a fast filter pool, a double-layer filter pool, a pressure filter and a variety of forms, but the devices all have a common problem of stopping for back flushing, that is to say, a medium is fixed in the filtration process, after a period of time of filtration, the filtration medium is blocked by suspended solids, the filtration speed is reduced, the filtration resistance is increased, and water production capacity is decreased. The continuous sand filter water purifying device comprises a sand filter tank (10); the sand filter tank is connected with a clear water outlet pipe (3); the clear water outlet pope is connected with a sand-water separator (7); the sand-water separator is connected with a sewage discharge pipe (2) and an air sand extraction pipe (4); the air sand extraction pipe is connected with a water inlet pipe (1), a gas lift pump (9) and a water inlet and distribution pipe (5); the water inlet and distribution pipe is connected with a backflow sand bucket (6). The continuous sand filter water purifying device is applied to further purification of subsequent-treated water of sewage treatment.

Description

Continuous sand filtration purifier and filtration, back-flushing method
Technical field:
The present invention relates to a kind of continuous sand filtration purifier and filtration, back-flushing method, be applied to sand filtration water purification field
Background technology:
Traditional sand filtering device comprises rapid filter, double layer filter, filter-press, the various ways such as diatomaceous earth filter, but all there is common issue in them, shut down backwash problem, namely it is fixed in filter process medium, after the temporal filtering of a section, filter medium is suspended thing blocking, its rate of filtration reduces, filtration resistance increases, water-yielding capacity declines, now it is necessary for carrying out backwash and realizes the regeneration of filter bed, when carrying out backwash, filter operation must be interrupted, a defecator must be increased as standby or be used alternatingly time special, although so having reached the purpose of continuous filtration, but complex process. cost of equipment is high, floor space greatly, not easily operation, management difficulty big.
Summary of the invention:
It is an object of the invention to provide a kind of continuous sand filtration purifier and filtration, back-flushing method.
Above-mentioned purpose is realized by following technical scheme:
A kind of continuous sand filtration purifier, its composition includes: sandfiltration pot, described sandfiltration pot is connected with going out clear water pipe, the described clear water pipe that goes out is connected with grit water separator, described grit water separator is connected with blow-off pipe, air sand extraction pipe respectively, described air sand extraction pipe is connected with water inlet pipe, air lift pump, water inlet water distributor respectively, and described water inlet water distributor is connected with refluence sand hopper respectively.
Described continuous sand filtration purifier, described sandfiltration pot is connected with filtering layer, bracing frame respectively, is provided with the fixing plate in ground under described bracing frame.
Described continuous sand filtration purifier, described water conservancy diversion sand hopper is cone, and described grit water separator is arranged on for wrong ring type that sand filtration cylinder top is vertical with air sand extraction pipe to be connected, and described water inlet pipe pipe becomes 30 degree of angles to be connected with described air sand extraction pipe.
The sand filtration process for purifying water of described continuous sand filtration purifier, the method comprises the steps:
(1) filter process is: the former water after dosing coagulant or biochemical treatment is through water inlet pipe, enter uniform cyclone water distributor device, current are when flowing out from the aperture of water distribution branch pipe, run into uniform flute profile energy dissipating, water distributing plate, decrease unlifting pressure, thus playing the effect of water distribution uniformity, float in former water is from bottom to top by filtering layer process, dammed to get off by filtrate, filter and waterborne be raised to water leg, enter clear water reserviors through going out clear water pipe.
(2) backwash process is: arrange air sand extraction pipe at the middle part of sand filter, when the compression air that density is little passes into, negative pressure is formed bottom sand filter, the dirty sand bottom filter is driven together to rise by gas stripping, elevated mixture falls into sand washing trough from air sand extraction pipe top, and sand grains enters " wrong ring type " grit water separator with current. Filtering water outlet with under the effect of the water-head of backwash water outlet, in sand extraction tube, the flushing water in air stripping water mixing sand-washing device together discharges filter tank from blow-off pipe, and the filtrate cleaned under gravity returns to filtering layer, completes filtrate wash cycles process inside filter tank.
Beneficial effects of the present invention:
1. present device investment is low, energy consumption is low, operating cost is low, without being equipped with high-power backwashing pump, aerator, and laying Backwash pipeline, only need to be equipped with low-powered air compressor, this equipment if disposal ability is 50m3/h only need to be equipped with the air compressor of 185W, is greatly saved equipment investment and operating cost.
Present device floor space is little, saves space, and continuous sand filtration water purifier filtering velocity, up to 10��12m/h, improves the disposal ability in unit are filter tank, reduces filter tank quantity, saves floor occupying area.
The present invention is stable, good filtration effect, and filtering layer is constantly cleaned by friction, is in clean conditions all the time, will not blockage phenomenon, it is ensured that the stability of operation and the stability of filter effect; Equipment operating efficiency is high, and water inlet adopts up flow type, cuts the filtrate after dirt bottom filtering layer, is constantly promoted backwash so that all filtrates can play a role.
The present invention cleans displacement and continuously and processes simple, and automaticity is high, need not shut down backwash; Filtrate gives full play to filtration, is suitable for water quality and is widely varied, and can process the former water that outstanding dirt content is high; Management is safeguarded simple and safe, adopts single special filtrate, installation, convenient disassembly, and auxiliary equipment is few, and air compressor power used is little, and utilization voltage is only 220V.
The present invention completes mixing, coagulation, filtration and backwash in a device, filtration continuously, continuous backwash, it is not necessary to backwashing pump and backwash water tank.
Accompanying drawing illustrates:
Accompanying drawing 1 is the structural representation of the present invention.
Detailed description of the invention:
Embodiment 1:
A kind of continuous sand filtration purifier, its composition includes: sandfiltration pot 10, described sandfiltration pot is connected with going out clear water pipe 3, the described clear water pipe that goes out is connected with grit water separator 7, described grit water separator is connected with blow-off pipe 2, air sand extraction pipe 4 respectively, described air sand extraction pipe is connected with water inlet pipe 1, air lift pump 9, water inlet water distributor 5 respectively, and described water inlet water distributor is connected with refluence sand hopper 6 respectively.
Embodiment 2:
Continuous sand filtration purifier according to embodiment 1, described sandfiltration pot is connected with filtering layer 8, bracing frame 11 respectively, is provided with the fixing plate 12 in ground under described bracing frame.
Embodiment 3:
Continuous sand filtration purifier according to embodiment 1 or 2, described water conservancy diversion sand hopper is cone, described grit water separator is arranged on for wrong ring type that sand filtration cylinder top is vertical with air sand extraction pipe to be connected, and described water inlet pipe pipe becomes 30 degree of angles to be connected with described air sand extraction pipe.
Embodiment 4:
The sand filtration process for purifying water of the continuous sand filtration purifier according to embodiment 13, the method comprises the steps:
(1) filter process is: the former water after dosing coagulant or biochemical treatment is through water inlet pipe, enter uniform cyclone water distributor device, current are when flowing out from the aperture of water distribution branch pipe, run into uniform flute profile energy dissipating, water distributing plate, decrease unlifting pressure, thus playing the effect of water distribution uniformity, float in former water is from bottom to top by filtering layer process, dammed to get off by filtrate, filter and waterborne be raised to water leg, enter clear water reserviors through going out clear water pipe.
(2) backwash process is: arrange air sand extraction pipe at the middle part of sand filter, when the compression air that density is little passes into, negative pressure is formed bottom sand filter, the dirty sand bottom filter is driven together to rise by gas stripping, elevated mixture falls into sand washing trough from air sand extraction pipe top, and sand grains enters " wrong ring type " grit water separator with current. Filtering water outlet with under the effect of the water-head of backwash water outlet, in sand extraction tube, the flushing water in air stripping water mixing sand-washing device together discharges filter tank from blow-off pipe, and the filtrate cleaned under gravity returns to filtering layer, completes filtrate wash cycles process inside filter tank.

Claims (4)

1. a continuous sand filtration purifier, its composition includes: sandfiltration pot, it is characterized in that: described sandfiltration pot is connected with going out clear water pipe, the described clear water pipe that goes out is connected with grit water separator, described grit water separator is connected with blow-off pipe, air sand extraction pipe respectively, described air sand extraction pipe is connected with water inlet pipe, air lift pump, water inlet water distributor respectively, and described water inlet water distributor is connected with refluence sand hopper respectively.
2. continuous sand filtration purifier according to claim 1, is characterized in that: described sandfiltration pot is connected with filtering layer, bracing frame respectively, is provided with the fixing plate in ground under described bracing frame.
3. continuous sand filtration purifier according to claim 1 and 2, it is characterized in that: described water conservancy diversion sand hopper is cone, described grit water separator is arranged on for wrong ring type that sand filtration cylinder top is vertical with air sand extraction pipe to be connected, and described water inlet pipe pipe becomes 30 degree of angles to be connected with described air sand extraction pipe.
4. a sand filtration process for purifying water for the continuous sand filtration purifier that one of claim 13 is described, is characterized in that: the method comprises the steps:
(1) drainage filter process is: the former water after dosing coagulant or biochemical treatment is through water inlet pipe, enter uniform cyclone water distributor device, current are when flowing out from the aperture of water distribution branch pipe, run into uniform flute profile energy dissipating, water distributing plate, decrease unlifting pressure, thus playing the effect of water distribution uniformity, float in former water is from bottom to top by filtering layer process, dammed to get off by filtrate, filter and waterborne be raised to water leg, enter clear water reserviors through going out clear water pipe;
(2) backwash process is: arrange air sand extraction pipe at the middle part of sand filter, when the compression air that density is little passes into, negative pressure is formed bottom sand filter, the dirty sand bottom filter is driven together to rise by gas stripping, elevated mixture falls into sand washing trough from air sand extraction pipe top, sand grains enters " wrong ring type " grit water separator with current, under filtering the effect of water-head of water outlet and backwash water outlet, in sand extraction tube, the flushing water in air stripping water mixing sand-washing device together discharges filter tank from blow-off pipe, the filtrate cleaned under gravity returns to filtering layer, filtrate wash cycles process is completed inside filter tank.
CN201410581028.9A 2014-10-27 2014-10-27 Continuous sand filter water purifying device and filter and back flushing method Withdrawn CN105617733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410581028.9A CN105617733A (en) 2014-10-27 2014-10-27 Continuous sand filter water purifying device and filter and back flushing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410581028.9A CN105617733A (en) 2014-10-27 2014-10-27 Continuous sand filter water purifying device and filter and back flushing method

Publications (1)

Publication Number Publication Date
CN105617733A true CN105617733A (en) 2016-06-01

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CN201410581028.9A Withdrawn CN105617733A (en) 2014-10-27 2014-10-27 Continuous sand filter water purifying device and filter and back flushing method

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105833577A (en) * 2016-05-31 2016-08-10 镇江中化聚氨酯工业设备有限公司 Filter
CN105920889A (en) * 2016-06-24 2016-09-07 江苏尚昆生物设备有限公司 Filter
WO2018103534A1 (en) * 2016-12-06 2018-06-14 欧盛腾水处理技术(杭州)有限公司 Horizontal-flow continuous sand filtration apparatus and water treatment process thereof
CN110917676A (en) * 2019-12-17 2020-03-27 四川海天生环科技有限公司 A whirl grit chamber for town sewage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105833577A (en) * 2016-05-31 2016-08-10 镇江中化聚氨酯工业设备有限公司 Filter
CN105920889A (en) * 2016-06-24 2016-09-07 江苏尚昆生物设备有限公司 Filter
WO2018103534A1 (en) * 2016-12-06 2018-06-14 欧盛腾水处理技术(杭州)有限公司 Horizontal-flow continuous sand filtration apparatus and water treatment process thereof
CN110917676A (en) * 2019-12-17 2020-03-27 四川海天生环科技有限公司 A whirl grit chamber for town sewage

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Application publication date: 20160601