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Decentralized alternating type sewage treatment device and method
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A sewage treatment device and sewage treatment technology, applied in water/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc., can solve the problem of easy clogging of resin and achieve the effect of avoiding damage
Active Publication Date: 2020-10-02
JIANGSU NJU ENVIRONMENTAL TECH
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Problems solved by technology
[0006] Aiming at the problem that the resin is prone to clogging when the existing resin phosphorus removal method is applied to the rural domestic sewage phosphorus removal, the present invention provides a decentralized and alternating sewage treatment device and method. At the same time as the solid particles of the sewage to be treated, the aeration of the aeration unit prevents the clogging of the filter element, thereby protecting the resin and effectively preventing the clogging of the resin
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Embodiment 1
[0058] In this example, the biochemically treated domestic sewage COD50mg / L, SS20mg / L, TP3.5mg / L, pH6~9, sewage water volume is 30m 3 / d, the initial ORP of sewage is 5mV. In order to deeply remove the total phosphorus content in sewage, NDA-P resin with larger pores is selected according to the SS concentration.
[0059] First, calculate the number of resin units 100 applicable to the environment of this embodiment according to the amount of sewage water, and the number N of resin units 100 is calculated by the following formula:
[0060] N=kQ / (nV) (1)
[0061] where Q is water volume, m 3 / h; n is the adsorption flow rate, BV / h; V is the amount of resin filled in the upper part of the filter element 111, m 3 ; k, correction factor.
[0062] According to engineering experience, it is determined that the adsorption flow rate n of sewage in this embodiment is 15BV / h, and the amount of resin 120 filled in the upper part of the filter element 111 is 16.7L; the correction coef...
Embodiment 2
[0073] In this example, the domestic sewage COD40mg / L after biochemical treatment, SS10mg / L, TP2mg / L, pH6~9, sewage water volume is 50m 3 / d, the initial ORP of sewage is 10mV. In order to deeply remove the total phosphorus content in the sewage, due to the low concentration of TP in this embodiment, NDA-(PF) resin with strong selectivity was selected.
[0074] First, calculate the number of resin units 100 applicable to the environment of this embodiment according to the amount of sewage water, and the number N of resin units 100 is calculated by the following formula:
[0075] N=kQ / (nV)(1)
[0076] where Q is water volume, m 3 / h; n is the adsorption flow rate, BV / h; V is the amount of resin filled in the upper part of the filter element 111, m 3 ; k, correction factor.
[0077] According to engineering experience, it is determined that the adsorption flow rate n of sewage in this embodiment is 10BV / h, and the amount of resin 120 filled in the upper part of the filter el...
Embodiment 3
[0087] In this example, the domestic sewage after biochemical treatment is COD60mg / L, SS15mg / L, TP5mg / L, pH6~9, and the sewage water volume is 60m 3 / d, the initial ORP of sewage is 20mV. In order to deeply remove the total phosphorus content in sewage, NDA-P resin is selected according to the SS concentration.
[0088] First, calculate the number of resin units 100 applicable to the environment of this embodiment according to the amount of sewage water, and the number N of resin units 100 is calculated by the following formula:
[0089] N=kQ / (nV)(1)
[0090] where Q is water volume, m 3 / h; n is the adsorption flow rate, BV / h; V is the amount of resin filled in the upper part of the filter element 111, m 3 ; k, correction factor.
[0091] According to engineering experience, it is determined that the adsorption flow rate n of sewage in this embodiment is 12BV / h, and the amount of resin 120 filled in the upper part of the filter element 111 is 20L; the correction coefficie...
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Abstract
The invention discloses a decentralized alternating type sewage treatment device and method, and belongs to the technical field of deep phosphorus removal. The device comprises a plurality of resin units, wherein each resin unit comprises a filter element and resin; each filter element comprises a filter element upper part and a filter element lower part which are separated by a porous baffle, theside wall of the filter element upper part is non-porous, and holes are formed in the side wall and the bottom surface of the filter element lower part, and the upper part of the filter element is filled with resin; an aeration unit which is positioned below the filter element and is used for providing upward shearing force for the filter element; a device body which is used for accommodating theresin unit, the aeration unit and to-be-treated sewage; after entering the device body, sewage to be treated enters resin through the lower part of the filter element and the porous baffle for adsorption treatment, and is discharged from the top end of the upper part of the filter element. During desorption, the filter element is pulled out by hand and then reaches a specified desorption point, and desorption regeneration can be completed by sequentially soaking the filter element in the desorption agent tank, the primary rinsing tank, the secondary pickling tank and the tertiary rinsing tankfor specific time. The treatment device is free of any other power consumption and is simple and convenient in desorption.
Description
technical field [0001] The invention belongs to the technical field of deep dephosphorization of rural domestic sewage, and more specifically relates to a decentralized and alternating sewage treatment device and method. Background technique [0002] In recent years, with the continuous improvement of my country's rural economic income and changes in lifestyles, sanitary ware, washing machines, bathing and other facilities have entered the homes of ordinary people, making the per capitadomestic water consumption and sewage discharge in rural areas continue to increase. Most of these sewage are directly discharged into the environment without treatment or after simple treatment, which not only has a negative impact on the water environment quality of surrounding river basins, but also gradually poses a threat to human health. The pollutants contained in rural domestic sewage are mainly organic matter, nitrogen, and phosphorus. Among them, water bodies polluted by phosphorus ...
Claims
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Application Information
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