Magnetic coagulating sedimentation treatment device for pharmaceutical wastewater and treatment process thereof

A technology for sedimentation treatment and pharmaceutical wastewater, applied in flocculation/sedimentation water/sewage treatment, multi-stage water treatment, water/sewage treatment, etc., can solve problems such as ineffective removal, damage to mixer blades, high safety requirements, etc., to achieve Avoid damage to mixer blades, avoid risk of wear, reduce the effect of pollutant concentration

Pending Publication Date: 2021-03-26
华夏碧水环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Fenton oxidation method is used as a pretreatment process for pharmaceutical wastewater, and the following problems are found in practice: 1. The amount of sludge is doubled due to the addition of iron salts; 2. The TDS of the effluent will increase by several hundred to several thousand mg/L, adversely affect the subsequent biological treatment
3. Hydrogen peroxide is a dangerous product with high safety requirements
[0008] The air flotation method or coagulation sedimentation method is used as the pretreatment process of pharmaceutical wastewater. In practice, the following problems are found: 1. There are few suspended solids in pharmaceutical wastewater, and most pollutants exist in the wastew

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  • Magnetic coagulating sedimentation treatment device for pharmaceutical wastewater and treatment process thereof

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Embodiment 1

[0042] For an enterprise that produces organic chemical raw materials such as antihypertensive drugs, antirheumatic drugs, cardiovascular and cerebrovascular drugs, antineoplastic drugs, and antibacterial drugs, the production wastewater is divided into high-concentration wastewater and low-concentration wastewater. CODcr 180000mg / L, NH 3 -N 10400mg / L, TN 15600mg / L, SS 100mg / L, TDS 78000mg / L. The high-concentration wastewater is treated by a sewage treatment process using the magnetic coagulation sedimentation treatment device of the present invention.

[0043] The sewage passes through the first fast mixing tank, the second fast mixing tank, the third fast mixing tank, the flocculation reaction tank, and the clarification sedimentation tank in turn, and the residence time is 2min, 5min, 2min, 10min, 60min in turn, and the first fast mixing tank is put into Add PAC, the dosage is 300mg / L, and the air stirring intensity is 3-6m 3 / m 2 .h; Add magnetic powder to the second fa...

Embodiment 2

[0051] For an enterprise that produces amphetamine, methocarbamol, tiapride hydrochloride, glichet and other drugs, the production wastewater is divided into high-concentration wastewater and low-concentration wastewater. CODcr 100000mg / L, NH in high concentration wastewater 3 -N 300mg / L, TN 500mg / L, SS200mg / L, TDS 150000mg / L. The high-concentration wastewater is treated by a sewage treatment process using the magnetic coagulation sedimentation treatment device of the present invention.

[0052] Sewage passes through the first fast mixing tank, the second fast mixing tank, the third fast mixing tank, the flocculation reaction tank, and the clarification sedimentation tank in turn, and the residence time is 1min, 3min, 1min, 15min, 45min, in which the first fast mixing tank Add PAC, the dosage is 500mg / L, and the air stirring intensity is 3-6m 3 / m 2 .h; Add magnetic powder to the second fast mixing tank, the dosage is 30mg / L, and the air stirring intensity is 5-8m 3 / m 2 ...

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Abstract

The invention discloses a magnetic coagulation sedimentation treatment device for pharmaceutical wastewater. The magnetic coagulation sedimentation treatment device comprises a first quick mixing tank, a second quick mixing tank, a third quick mixing tank, a fourth flocculation tank, a clarification sedimentation tank and a magnetic powder recovery system which are connected in sequence, wherein air stirring devices are arranged in the first quick mixing tank, the second quick mixing tank and the third quick mixing tank; a mechanical stirring device is arranged in the fourth flocculation tank;a flocculation dosing pipe is connected with the first quick mixing tank; the magnetic powder passing through the magnetic powder recovery system is added into the second quick mixing tank; and a coagulant aid dosing pipe is connected with the third quick mixing tank. The invention also discloses a magnetic coagulating sedimentation treatment process for pharmaceutical wastewater. Air stirring isadopted in the mixing section of the magnetic coagulation sedimentation process, so that an ideal mixing flocculation effect is achieved, the sewage treatment difficulty of a subsequent treatment process is further reduced, the risk of abrasion of stirring equipment in the prior art is avoided, and the energy consumption of the system is reduced.

Description

technical field [0001] The invention relates to the field of pharmaceutical wastewater pretreatment, in particular to a magnetic coagulation sedimentation treatment device for pharmaceutical wastewater and a treatment process thereof. Background technique [0002] Wastewater from pharmaceuticals produced with grain or molasses as the main raw material mainly comes from high-concentration organic wastewater from separation, extraction, refining and purification processes, such as crystallization liquid, waste mother liquor, etc., washing wastewater from seed tanks and fermentation tanks, and cooling water from fermentation tanks Wait. The production process of most drugs includes microbial fermentation, filtration, extraction and crystallization, refining, refining and other processes. Therefore, this kind of wastewater has the following characteristics: high CODcr, high SS, complex composition, presence of biological toxic substances, high sulfate concentration, high chroma...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F103/34
CPCC02F1/488C02F1/5245C02F1/5281C02F1/56C02F1/72C02F9/00C02F2103/343C02F2209/08C02F2301/046C02F2301/08C02F2303/14
Inventor 侯亚平张传兵郭强赵曙光陈长松李鑫张丁丁陈珊珊徐漫漫张世阳申志华许昌张真张明明
Owner 华夏碧水环保科技股份有限公司
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