Method for treating waste water containing multiple mixed organophosphorus scale and corrosion inhibitors

A scale and corrosion inhibitor, organophosphorus technology, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problem of poor removal of organic phosphorus and unstable operation. , narrow scope of application, etc., to achieve good flocculation effect, reduce operation steps, and facilitate the operation.

Inactive Publication Date: 2016-06-15
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The methods for removing organic phosphorus in the prior art generally have the disadvantages of cumbersome operation, high cost and narrow application range
In addition, the prior art wastewater phosphorus removal methods still have problems such as poor organic phosphorus removal effect and unstable operation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: A wastewater treatment method containing multiple mixed organic phosphorus scale and corrosion inhibitors, the steps are as follows:

[0030] The result of water quality analysis before wastewater treatment is that the total phosphorus concentration is 3mg / L, and the total concentration of three organic phosphorus ATMP, HEDP, PBTCA scale and corrosion inhibitors added is 22mg / L, of which the phosphorus of the three scale and corrosion inhibitors The content ratio is 1:1:1.

[0031] Take 100mL of wastewater in a beaker, add 0.038g of solid calcium hydroxide to the wastewater at room temperature to adjust the wastewater pH to 12. After fully stirring, quickly add 1mL of currently used 100g / L ferrous sulfate solution , Stir well, and then add 2mL, 1g / L PAM to accelerate flocculation and sedimentation. After standing for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated wastewater. The measured phosphorus concentrati...

Embodiment 2

[0032] Embodiment 2: A wastewater treatment method containing multiple mixed organic phosphorus scale and corrosion inhibitors, the steps are as follows:

[0033] The result of water quality analysis before wastewater treatment is that the total phosphorus concentration is 3mg / L, and the total concentration of three organic phosphorus ATMP, HEDP, PBTCA scale and corrosion inhibitors added is 18mg / L, of which the phosphorus of the three scale and corrosion inhibitors The content ratio is 3:2:1.

[0034] Take 100mL of wastewater in a beaker, add 0.04g of solid calcium hydroxide to the wastewater at room temperature to adjust the wastewater pH to 12. After fully stirring, quickly add 1mL of currently used 100g / L ferrous sulfate solution , Stir well, and then add 2mL, 1g / L PAM to accelerate flocculation and sedimentation. After standing for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated wastewater. The measured phosphorus concentra...

Embodiment 3

[0035] Embodiment 3: A wastewater treatment method containing multiple mixed organic phosphorus scale and corrosion inhibitors, the steps are as follows:

[0036] The result of water quality analysis before wastewater treatment is that the total phosphorus concentration is 3mg / L, and the total concentration of three organic phosphorus ATMP, HEDP, PBTCA scale and corrosion inhibitors added is 18mg / L, of which the phosphorus of the three scale and corrosion inhibitors The content ratio is 4:1:1.

[0037] Take 100mL of wastewater in a beaker, add 0.042g of solid calcium hydroxide to the wastewater under normal temperature conditions to adjust the wastewater pH to 12. After fully stirring, quickly add 1mL of the 100g / L ferrous sulfate solution currently used , Stir well, and then add 2mL1g / L PAM to accelerate flocculation and sedimentation. After standing for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated wastewater. The measured p...

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Abstract

The invention relates to a method for treating waste water containing multiple mixed organophosphorus scale and corrosion inhibitors.Calcium hydroxide, ferrous sulfate and a flocculating agent solution are sequentially added to the waste water containing ATMP, HEDP and/or PBTCA organophosphorus scale and corrosion inhibitors, the organophosphorus removal rate effect can reach 95% or above, and the phosphorus concentration in the solution can be reduced to 0.2 mg/L or below.According to the method, the chemical reagents are directly added to remove organophosphorus ATMP, HEDP and PBCA, operation is easy and convenient, cost is low, the total phosphorus concentration of effluent can be controlled at a low level, and the effluent total phosphorus emission standard is met.

Description

Technical field [0001] The invention relates to a wastewater treatment method containing multiple mixed organic phosphorus scale and corrosion inhibitors, and belongs to the field of wastewater treatment methods. Background technique [0002] Wastewater usually contains organic phosphates and inorganic phosphates. The removal of inorganic phosphates in wastewater is usually by directly adding chemical agents to convert them into insoluble phosphate precipitation, and then solid-liquid separation can be removed; while organic phosphates are now The method used is to first oxidize and degrade it into inorganic phosphate, and then add the corresponding chemical agent to remove it. Among them, oxidative degradation methods include photocatalytic oxidative degradation, ozone oxidative degradation, radiation degradation, microbial degradation, and low-temperature plasma degradation. For example, CN101704606A discloses a treatment method for wastewater containing organic phosphorus. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F101/30
CPCC02F1/52C02F1/5245C02F1/56C02F2101/30
Inventor 高灿柱吉瑞娟张晓芸李元镇
Owner SHANDONG UNIV
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