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High-concentration organic phosphorus wastewater pretreatment device

A pretreatment device and organic phosphorus technology, applied in the field of water treatment, can solve the problems of complex treatment device, poor treatment effect, secondary pollution, etc., and achieve the effect of reducing phosphorus concentration, reducing load and cost, and convenient operation

Active Publication Date: 2017-05-31
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a pretreatment device for high-concentration organic phosphorus wastewater, which is used to solve the problem of complex treatment devices in the prior art, poor treatment effects and easy to cause secondary pollution, etc. The problem

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  • High-concentration organic phosphorus wastewater pretreatment device

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Effect test

Embodiment 1

[0056] The wastewater containing organophosphorus concentration of 200 mg / L was first subjected to plasma advanced oxidation treatment in plasma processor 1. The hydraulic retention time of plasma processor 1 was 2h, the discharge power was 300W, the current frequency was 3kHz, and the air flow rate was is 100L / min, and the treated effluent is the primary treatment liquid; the primary treatment liquid enters the tubular mixer 2, and 8 L / m of lime milk (effective calcium content 75%) is added. 3 Primary treatment liquid and flocculant 5L flocculant / m 3 The primary treatment liquid, wherein the added flocculant is prepared by compounding diatomite, polyaluminum chloride, and polyacrylamide in a mass ratio of 2:1.2:0.5. After the precipitant and flocculant are mixed and the chemical precipitation reaction and flocculation reaction are carried out, the effluent enters the inclined tube precipitation device 3 to continue the chemical precipitation reaction and flocculation reaction...

Embodiment 2

[0060] The wastewater containing organophosphorus concentration of 200mg / L was subjected to advanced plasma oxidation treatment in plasma processor 1. The hydraulic retention time of plasma processor 1 was 1.5h, the discharge power was 800W, the current frequency was 3kHz, and the air The flow rate is 100L / min, and the treated effluent is the primary treatment liquid; the primary treatment liquid enters the tubular mixer 2, and 20L / m of lime milk (effective calcium content 80%) is added. 3 Primary treatment liquid and flocculant 12L flocculant / m 3 The primary treatment liquid, wherein the added flocculant is prepared by compounding diatomite, polyaluminum chloride, and polyacrylamide in a mass ratio of 2.5:1.1:0.4. After the precipitant and flocculant are mixed and the chemical precipitation reaction and flocculation reaction are carried out, the effluent enters the inclined tube precipitation device 3 to continue the chemical precipitation reaction and flocculation reaction a...

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Abstract

The invention provides a high-concentration organic phosphorus wastewater pretreatment device which comprises a plasma treatment device (1), a tubular mixer (2), a pipe chute precipitator (3), an adsorptive filter (4), a baffle (5), a back flush pipe (6), a second water outlet weir (7), a sludge bucket (8) and a sludge discharge pipe (9). In the pretreatment device, the plasma treatment device is used as the organic phosphorus preoxidation unit, thereby maximally converting organic phosphorus into inorganic phosphorus without secondary pollution. The plasma treatment device is organically combined with the tubular mixer, pipe chute precipitator, adsorptive filter and other reactors, thereby effectively lowering the phosphorus concentration in water. The pretreatment device is convenient to operate.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a pretreatment device for high-concentration organic phosphorus wastewater. Background technique [0002] At present, there are more than 10,000 kinds of organophosphorus compounds produced in the world. Due to the expanded production and widespread use of organophosphorus chemical industry, the high-concentration toxic organic wastewater produced in the production process is large and polluted, causing great harm to the environment. Therefore, the effective treatment of such wastewater is imminent. [0003] Phosphorus-containing wastewater with a concentration greater than 100 mg / L is called high-concentration phosphorus-containing wastewater. For the pretreatment of high-concentration organic phosphorus wastewater, physicochemical processes are mostly used. Among them, chemical methods include Fenton oxidation method, electrocatalytic oxidation method, etc., physical method Incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F101/30
CPCC02F1/001C02F1/28C02F1/32C02F1/52C02F1/725C02F9/00C02F2001/007C02F2101/30
Inventor 冯景伟彭璐袁守军沈子君陈君杨
Owner HEFEI UNIV OF TECH