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Phosphorus-containing pesticide wastewater treatment method

A treatment method, phosphorus pesticide technology, applied in the field of phosphorus pesticide wastewater treatment, can solve problems such as failure to meet environmental protection standards, complex treatment process, complex components, etc., to improve water treatment efficiency, increase removal rate, and increase reuse rate Effect

Pending Publication Date: 2019-10-22
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex composition of this type of wastewater, even after the above-mentioned treatment, the indicators of the treatment liquid still cannot meet the existing environmental protection standards, and the treatment process is relatively complicated.

Method used

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  • Phosphorus-containing pesticide wastewater treatment method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition of wastewater used in this embodiment is shown in Table 1.

[0032] Table 1

[0033] project pH COD Total Phosphorus Concentrationmg / L 7.4 54869.28 4869.82

[0034] Wastewater treatment methods are as follows:

[0035] (1) After filtering the phosphorus-containing pesticide wastewater, add hydrogen peroxide with a quality of 1.8% of the phosphorus-containing pesticide wastewater, adjust the pH to 3.9, and stir for 1 hour;

[0036] (2) Direct current is used for electrification treatment, the anode material is iron or aluminum, the cathode material is graphite, and the voltage is 25V;

[0037] (3) Adjust the pH to 8.9, add polyacrylamide with 0.8% of the quality of phosphorus-containing pesticide wastewater, stir for 3 minutes, add polyaluminium chloride and potassium aluminum sulfate dodecahydrate of equal weight of 3.2% of the quality of phosphorus-containing pesticide wastewater, and then add Phosphorus-containing pesticid...

Embodiment 2

[0042] Waste water quality condition is the same as embodiment 1.

[0043] Wastewater treatment methods are as follows:

[0044] (1) After filtering the phosphorus-containing pesticide wastewater, add hydrogen peroxide with a quality of 1.8% of the phosphorus-containing pesticide wastewater, adjust the pH to 3.9, and stir for 1 hour;

[0045] (2) Direct current is used for electrification treatment, the anode material is iron or aluminum, the cathode material is graphite, and the voltage is 15V;

[0046] (3) Adjust the pH to 8.9, add polyacrylamide with 0.8% of the quality of phosphorus-containing pesticide wastewater, stir for 3 minutes, add polyaluminium chloride and potassium aluminum sulfate dodecahydrate of equal weight of 3.2% of the quality of phosphorus-containing pesticide wastewater, and then add Phosphorus-containing pesticide wastewater with 2% sodium persulfate, stirred for 4 minutes;

[0047] (4) Heating and pressurizing, the temperature is 360°C, the pressure ...

Embodiment 3

[0051] Waste water quality condition is the same as embodiment 1.

[0052] Wastewater treatment methods are as follows:

[0053] (1) After filtering the phosphorus-containing pesticide wastewater, add hydrogen peroxide with a quality of 1.8% of the phosphorus-containing pesticide wastewater, adjust the pH to 3.9, and stir for 1 hour;

[0054] (2) Direct current is used for electrification treatment, the anode material is iron or aluminum, the cathode material is graphite, and the voltage is 30V;

[0055] (3) Adjust the pH to 8.9, add polyacrylamide containing 0.8% of the quality of phosphorus-containing pesticide wastewater, stir for 3 minutes, add polyaluminum chloride and potassium aluminum sulfate dodecahydrate of equal weight of 3.2% of the quality of phosphorus-containing pesticide wastewater, and then add Phosphorus-containing pesticide wastewater with 2% sodium persulfate, stirred for 5 minutes;

[0056] (4) Heating and pressurizing, the temperature is 360°C, the pressu...

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Abstract

The invention discloses a phosphorus-containing pesticide wastewater treatment method, and belongs to the technical field of sewage treatment. The phosphorus-containing pesticide wastewater treatmentmethod comprises: filtering phosphorus-containing pesticide wastewater, adding an oxidant, adjusting the pH value, and stirring; electrifying with direct current; adding a flocculant and an oxidant; carrying out heating pressurizing, and introducing oxygen and ozone; carrying out ultrasonic treatment; and carrying out solid-liquid separation. According to the present invention, by matching the reasonable process flow and the reasonable treatment method, various process steps are integrated, such that various process steps can be well cooperated with each other so as to substantially improve the removal rate of organic phosphorus, inorganic phosphorus and other harmful substances in the phosphorus-containing pesticide wastewater, wherein organic phosphorus, orthophosphate, metaphosphate, hypophosphite, phosphite and the like in phosphorus-containing pesticide wastewater can be efficiently removed; and the detection results show that the fresh water obtained after the treatment by the treatment method of the present invention can be directly reused so as to improve the reuse rate of wastewater.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for phosphorus-containing pesticide wastewater. Background technique [0002] my country is a big country in the production and use of pesticides, and its annual output ranks second in the world. Pesticides are an indispensable means of production to ensure the sustainable development of agricultural production in our country. However, the wastewater containing phosphorus pesticides has high COD concentration, high toxicity, and poor biodegradability. severe pollution. Phosphorus-containing pesticide wastewater mainly includes organic phosphorus pesticide wastewater and inorganic phosphorus pesticide wastewater. The residual intermediates or finished products in organophosphorus pesticide wastewater are highly toxic and have a stable chemical structure. If effective pretreatment measures can be taken to degrade large molecules into small molecules an...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F101/10C02F101/30
CPCC02F1/001C02F1/36C02F1/46C02F1/5236C02F1/56C02F1/66C02F1/72C02F1/78C02F9/00C02F2101/105C02F2101/306C02F2301/08
Inventor 陆海王晓玲王建辉林英姿李雪琪高铎瑄王一旸
Owner JILIN JIANZHU UNIVERSITY
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