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A kind of organic phosphorus wastewater treatment process

A wastewater treatment and organic phosphorus technology, applied in multi-stage water treatment, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of low concentration, low treatment efficiency, unsatisfactory treatment effect, etc., and achieve water content Low, high separation precision, good dehydration performance

Active Publication Date: 2020-09-04
广西碧清源环保投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low concentration of organic phosphorus in general content wastewater, these methods have low treatment efficiency and unsatisfactory treatment effects.

Method used

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Embodiment 1

[0023] A kind of organophosphorus wastewater treatment process of the present invention, this organophosphorus wastewater is the chemical industry wastewater that anthraquinone method produces hydrogen peroxide, mainly contains trioctyl phosphate (concentration is 184mg / L), comprises the following steps:

[0024] (1) Filter the above-mentioned organophosphorus wastewater through a microfiltration membrane, the average pore size of the microfiltration membrane is 1 μm to 2 μm, to remove solid impurities, colloidal particles and suspended particles;

[0025] (2) separating and concentrating the organophosphorus wastewater after impurity removal through a membrane separation device composed of a nanofiltration membrane and a reverse osmosis membrane to obtain a concentrated solution and a clear liquid; the nanofiltration membrane is prepared by the following method:

[0026] a. Preparation of ceramic membrane matrix: foamed asphalt with an average pore size of 300 μm was used as a...

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Abstract

The invention discloses an organophosphorus waste water treatment process. The process comprises steps as follows: (1) organophosphorus waste water is filtered through a micro-filtration membrane, so that solid impurities, colloidal particles and suspending particles are removed; (2) organophosphorus waste water with the impurities removed are separated and concentrated through a membrane separation device comprising a nanofiltration membrane and a reverse osmosis membrane, and concentrated liquor and a clear liquid are obtained; (3) the concentrated liquor obtained in the step (2) is subjected to inorganic phosphating treatment, so that organic phosphorus in the concentrated liquor is converted into inorganic phosphor salt; (4) ammonium salt and magnesium salt are added to the concentrated liquor subjected to inorganic phosphating treatment, the inorganic phosphor salt is subjected to a struvite precipitation reaction, a supernatant liquid is separated out, and treatment of the organophosphorus waste water is finished. The organophosphorus waste water treatment process has the advantages of high efficiency, good effect, technical applicability, economical performance, feasibility and the like.

Description

technical field [0001] The invention relates to the technical field of phosphorus-containing wastewater treatment, in particular to an organic phosphorus wastewater treatment process. Background technique [0002] Organophosphorus compounds mainly include phosphoric acid esters, phosphite esters, pyrophosphoric acid esters, hypophosphorous esters, etc. Some of the phosphoric acid ester compounds are very toxic, such as trioctyl phosphate. A large amount of organic phosphorus wastewater will be produced during the production of organic phosphorus, which has complex components, high toxicity, and poor biodegradability. Discharging these wastewater into natural water bodies will destroy the water ecosystem and have a great impact on the living environment of human beings. [0003] There are many conventional treatment methods for phosphorus-containing wastewater, but the industrial applications are mainly chemical phosphorus removal and biological phosphorus removal, such as ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04B01D71/02B01D69/12B01D67/00C02F101/30
CPCB01D67/0044B01D67/0067B01D69/12B01D71/02C02F1/441C02F1/442C02F1/444C02F1/5236C02F1/5254C02F1/72C02F9/00C02F2001/007C02F2101/105C02F2101/30C02F2301/08
Inventor 秦玉兰高明河黄付平代晋国黄智宁陈泽凤
Owner 广西碧清源环保投资有限公司
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