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Removal method for 2-phosphomobutane-1,2,4-tricarboxylic acid in organophosphorus-containing wastewater

A technology of butane phosphonate and organophosphorus, which is applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of unstable operation, poor removal effect, cumbersome steps, etc., and achieve good flocculation effect. , The removal effect is good, the effect of accelerating the sedimentation speed

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

[0005] Aiming at the deficiencies in the prior art for removing organic phosphorus PBTCA in wastewater such as cumbersome steps, high cost, unstable operation, and poor removal effect, the present invention provides an efficient and rapid removal of organic phosphorus 2-phosphonic acid butane- 1,2,4-Tricarboxylic acid (PBTCA) treatment method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: The removal method of 2-phosphonic acid butane-1,2,4-tricarboxylic acid in waste water containing organic phosphorus, the steps are as follows:

[0029] Take 100mL of waste water in a beaker, and at room temperature, add 0.049g of solid calcium hydroxide to the waste water to adjust the pH of the waste water to 12. After fully stirring, quickly add 1mL of ferrous sulfate of 100g / L that is currently in use. solution, stir evenly, and then add 1mL, 1g / L PAM to accelerate flocculation and precipitation. After standing still for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated waste water. The measured phosphorus concentration was 0.109 mg / L, and the removal rate of PBTCA was 90.6%.

Embodiment 2

[0030] Example 2: The removal method of 2-phosphonic acid butane-1,2,4-tricarboxylic acid in waste water containing organic phosphorus, the specific steps are as follows:

[0031] Take 100mL of waste water in a beaker, and at room temperature, add 0.068g of solid calcium hydroxide to the waste water to adjust the pH of the waste water to 12. After fully stirring, quickly add 1mL of the 250g / L aluminum sulfate solution that is currently in use. , Stir evenly, and then add 2mL, 1g / L PAM to accelerate flocculation and precipitation. After standing still for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated waste water. The measured phosphorus concentration was 0.097 mg / L, and the removal rate of PBTCA was 91.6%.

Embodiment 3

[0032] Embodiment 3: The removal method of 2-phosphonic acid butane-1,2,4-tricarboxylic acid in wastewater containing organic phosphorus, the specific steps are as follows:

[0033] Take 100mL of waste water in a beaker, and at room temperature, add 0.079g of solid calcium hydroxide to the waste water to adjust the pH of the waste water to 12. After fully stirring, quickly add 1mL of the current 142g / L polymer chloride Aluminum solution, stir evenly, then add 3mL, 1g / L PAM to accelerate flocculation and precipitation. After standing still for 30 minutes, the precipitate in the solution was filtered, and the discharged supernatant was treated waste water. The measured phosphorus concentration was 0.125 mg / L, and the removal rate of PBTCA was 89.1%.

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Abstract

The invention relates to a removal method for 2-phosphomobutane-1,2,4-tricarboxylic acid in organophosphorus-containing wastewater.The method comprises the steps that calcium hydroxide, ferric salt or aluminum salt and a flocculant solution are sequentially added into the wastewater containing organophosphorus 2-phosphomobutane-1,2,4-tricarboxylic acid, the removal rate of organophosphorus 2-phosphomobutane-1,2,4-tricarboxylic acid can reach 89% or above, and the concentration of phosphorus in the solution can be lowered to 0.5 mg / L or below.The method is easy and convenient to operate, low in cost and stable in operation, the total phosphorus concentration of effluent can be controlled to be in a low level, and the total phosphorus discharge standard of the effluent is met.

Description

technical field [0001] The invention relates to a method for removing 2-phosphonic acid butane-1,2,4-tricarboxylic acid in waste water containing organic phosphorus, and belongs to the field of waste water treatment methods. Background technique [0002] 2-Phosphonic acid butane-1,2,4-tricarboxylic acid, referred to as PBTCA, molecular formula C 7 h 11 o 9 P, is an organic phosphonate. PBTCA has low phosphorus content, because it has the structural characteristics of phosphonic acid and carboxylic acid, it has good scale and corrosion inhibition performance, which is better than other commonly used organic phosphonic acids, especially at high temperatures. Commonly used organic phosphonic acid. PBTCA is the most widely used compound of high-efficiency scale and corrosion inhibitors, and is one of the products with the best performance. PBTCA is widely used in circulating cooling water systems, and the dosage is 5-15mg / L. Since PBTCA is an organic phosphate commonly use...

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 高灿柱吉瑞娟赵亮贾玉柱
Owner SHANDONG UNIV
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