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Domestic sewage treatment agent capable of efficiently removing phosphorus and preparation method thereof

A treatment agent and ultra-pure water technology, applied in water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as difficult treatment, high treatment cost, and weak descaling effect , to achieve the effects of simplifying raw material allocation, optimizing the preparation process, and reducing the risk of heavy metals exceeding the standard

Pending Publication Date: 2021-11-05
深圳研源环境控股有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The mud cake caused by high phosphorus anti-solubility re-releases a large amount of phosphorus during the filter press process, which makes some phosphorus removal agents with good phosphorus removal effect in the sewage treatment stage have weak descaling effect in actual application.
Therefore, in order to achieve the goal of descaling in sewage treatment, there are problems of high treatment cost and difficult treatment.

Method used

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  • Domestic sewage treatment agent capable of efficiently removing phosphorus and preparation method thereof
  • Domestic sewage treatment agent capable of efficiently removing phosphorus and preparation method thereof
  • Domestic sewage treatment agent capable of efficiently removing phosphorus and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation method of modified WTR comprises the following steps:

[0034] S1: Add WTR to Na 2 SO 4 solution, stirred for 6-8h; the WTR and Na 2 SO 4 The solid-liquid mass ratio of the solution is 1:20-30, Na 2 SO 4 The concentration of the solution is 0.1-0.5mol / L; the specific operation of the stirring reaction is as follows: stir slowly for 1-3 minutes, and then stir at a speed of 150-180r / min in a water bath environment of 30°C.

[0035] S2: After the stirring reaction is completed, centrifugally filter and wash with ultrapure water to remove residual Na 2 SO 4 , get WTR filtrate;

[0036] S3: Dry the WTR filtrate in an environment of 90-110°C for 10-12 hours. 2 Calcined at 350-450° C. for 3-5 hours under gas protection, and cooled to obtain modified WTR.

[0037] The preparation method of modified WTR sodium alginate beads comprises the following steps,

[0038] Adding the modified WTR to ultrapure water, placing it under an ultrasonic instrument and ...

Embodiment 2

[0042] The preparation method of modified WTR comprises the following steps:

[0043] S1: Add WTR to Na 2 SO 4 solution, stirred for 6-8h; the WTR and Na 2 SO 4 The solid-liquid mass ratio of the solution is 1:20-30, Na 2 SO 4 The concentration of the solution is 0.1-0.5mol / L; the specific operation of the stirring reaction is to first stir slowly for 1-3 minutes, and then stir at a speed of 150-180r / min in a water bath environment of 30±3°C.

[0044] S2: After the stirring reaction is completed, centrifugally filter and wash with ultrapure water to remove residual Na 2 SO 4 , get WTR filtrate;

[0045] S3: Dry the WTR filtrate in an environment of 90-110°C for 10-12 hours. 2 Calcined at 350-450° C. for 3-5 hours under gas protection, and cooled to obtain modified WTR.

[0046] The preparation method of modified WTR sodium alginate beads comprises the following steps,

[0047] Adding the modified WTR to ultrapure water, placing it under an ultrasonic instrument and u...

Embodiment 3

[0051] The preparation method of modified WTR comprises the following steps:

[0052] S1: Add WTR to Na 2 SO 4 solution, stirring reaction 6h; the WTR and Na 2 SO 4 The solid-to-liquid mass ratio of the solution is 1:20, and Na 2 SO 4 The concentration of the solution is 0.1 mol / L; the specific operation of the stirring reaction is to stir slowly for 1 min, then stir at a speed of 150 r / min in a water bath environment of 30±1°C.

[0053] S2: After the stirring reaction is completed, centrifugally filter and wash with ultrapure water to remove residual Na 2 SO 4 , get WTR filtrate;

[0054] S3: Dry the WTR filtrate at 90°C for 10 hours, after drying in the muffle furnace, pass through the tube furnace N 2 Calcined at 350°C for 3h under gas protection, and cooled to obtain modified WTR.

[0055] The preparation method of modified WTR sodium alginate beads comprises the following steps,

[0056] Add the modified WTR to ultrapure water, place it under an ultrasonic instr...

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Abstract

The invention discloses a domestic sewage treatment agent capable of efficiently removing phosphorus and a preparation method thereof, and relates to the technical field of sewage treatment. The domestic sewage treatment agent capable of efficiently removing phosphorus comprises the following components in parts by weight: 10-40 parts of modified WTR sodium alginate beads, 30-90 parts of a flocculating agent, 3-20 parts of a chelating agent, 3-10 parts of ferrous sulfate, 1-3 parts of citric acid and 3-10 parts of reduced iron powder. Through salt modification and roasting, the modified WTR has a phosphorus adsorption rate of 70% or above; the prepared modified WTR sodium alginate beads can be desorbed through a NaOH solution, and have good reusability; and the domestic sewage treatment agent applying the modified WTR sodium alginate beads has a phosphorus adsorption rate of 95% or above.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a modified WTR, a preparation method and the modified WTR sodium alginate beads used therefor, and a domestic sewage treatment agent for highly efficient phosphorus removal. Background technique [0002] Phosphorus in domestic urban domestic sewage is a common phenomenon. Phosphorus is an essential nutrient for living organisms, and its toxicity is very low, but a large amount of phosphorus-containing sewage will cause eutrophication of water bodies and deteriorate the water environment. Even if the average phosphorus content in domestic sewage is in a low range, due to the large amount of sewage, the sewage without phosphorus removal treatment will be discharged directly, which will cause serious damage to the surrounding environment in the long run. [0003] The current mainstream sewage phosphorus removal methods, such as adding iron salt phosphorus removal agent, ca...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F101/10C02F101/20
CPCC02F9/00C02F1/5236C02F1/58C02F1/001C02F2101/105C02F2101/20
Inventor 刘民华田守能何俊杰
Owner 深圳研源环境控股有限公司
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