Carbon-sand double filter tank with central canals

A carbon sand and filter technology, which is applied in filtration treatment, special treatment targets, water/sludge/sewage treatment, etc., can solve the problems of poor combination of treatment process pools, difficulty in uniform water distribution, lack of pool structure, etc. , to achieve the effect of reasonable and feasible pool type combination, small water head loss, saving operating costs and water consumption

Pending Publication Date: 2021-02-26
SHANGHAI MUNICIPAL ENG DESIGN INST GRP +1
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AI Technical Summary

Problems solved by technology

[0003] Although the treatment effect of the upward flow activated carbon adsorption pool is good, due to the lack of a suitable pool structure, the difficulty of uniform water distribution and the high cost of the filter, there are many restrictions in the actual layout of the water plant, and the pool type of the subsequent treatment process poor composition

Method used

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  • Carbon-sand double filter tank with central canals
  • Carbon-sand double filter tank with central canals
  • Carbon-sand double filter tank with central canals

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Embodiment 2

[0035] When the influent water quality is better, it can go beyond the charcoal pool 25 and directly enter the sand pool 26 for processing. The carbon-sand double filter tank has reserved the layout space for the surpassing facilities. When there is a demand for surpassing in practical applications, a sand tank surpassing the water inlet main channel 32 and a single surpassing water inlet valve can be added on the upper side wall of the sand tank 26. 33 and beyond the water inlet weir 34, the incoming water can go beyond the charcoal pond 25 and directly enter the sand pond 26 for processing.

[0036] During water treatment, close the water inlet electric butterfly valve 30, and the water to be treated enters the transcending water inlet main canal 32 through the transcending water inlet pipe 31, and enters the single lattice sand tank 26 through the single lattice surpassing water inlet valve 33 and the surpassing water inlet weir 34, It passes through the sand filter materia...

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Abstract

The invention provides a carbon-sand double filter tank with central canals. Three layers of central canals, namely an upper-layer produced water drainage channel, a middle-layer sand tank drainage channel and a lower-layer carbon tank water inlet channel, are arranged in the center of a carbon tank, and the lower-layer carbon tank water inlet channel is also used as a back-washing gas distribution channel; two layers of central channels, namely an upper-layer drainage channel and a lower-layer back-washing water and gas distribution channel, are arranged in the center of a sand tank; and thecarbon tank and the sand tank are separated by a partition wall and are communicated only through upper-layer water passing holes of the central channels. After entering, the water to be treated is treated by an upward flow activated carbon adsorption tank, then enters the sand tank from the water passing holes in the partition wall, is filtered in the sand tank and then is discharged. The carbon-sand double filter tank with central canals provided by the invention is reasonable and feasible in tank type combination, compact in arrangement, simple in structure, low in manufacturing cost, few in pipelines and small in occupied area.

Description

technical field [0001] The invention relates to the field of water supply treatment, in particular to a carbon-sand double filter tank with a central channel used in advanced treatment of water supply plants, treatment of sewage plants and special water treatment. Background technique [0002] At present, the ozone biological activated carbon process and sand filter process are mostly used in the advanced treatment of waterworks, sewage treatment and special water treatment. The ozone biological activated carbon process has a better removal rate for natural organic matter and ammonia nitrogen in raw water. Sand filtration The pool process has a better removal rate for particulate matter in water. There are two forms of biological activated carbon adsorption pools in the ozone biological activated carbon process: downflow fixed bed and upflow fluidized bed. It is more common to use a downward-flowing fixed-bed biological activated carbon adsorption tank, but in recent years,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F9/14
CPCC02F1/001C02F1/283C02F3/00C02F2303/14C02F2303/16
Inventor 邬亦俊芮旻杨友强许龙刘志远张增荣吴国荣
Owner SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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