Pharmaceutical wastewater treatment process

A pharmaceutical wastewater and process technology, applied in water/sewage treatment, natural water body treatment, biological water/sewage treatment, etc., can solve problems such as non-conformity of effluent, reduction of wastewater biodegradability, difficulty in achieving treatment effects, etc., to reduce the burden Effect

Pending Publication Date: 2021-02-05
苏州仕净科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Pharmaceutical wastewater often contains heterocycles, macromolecules and even polymers that are difficult to biodegrade, and some toxic components in pharmaceutical wastewater can inhibit the growth of microorganisms, reducing the biodegradability of wastewater and making the effluent not meet the requirements; At the same time, some pharmaceutical wastewater contains a large amount of granular, suspended, and emulsified impurities. In addition, due to raw materials, intermediates, and processes, it may also contain high levels of ammonia nitrogen and total phosphorus. As a result, it is difficult to achieve stable compliance with biological methods. Emission Control Effect

Method used

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Effect test

Embodiment 1

[0047] Add 200-400ppm to one cubic meter of pharmaceutical wastewater containing CODcr=2000mg / L, BOD5=1300mg / L, SS=500mg / L, TP=130mg / L, NH3-N=160mg / L, total nitrogen=400mg / L After the polyaluminum chloride (PAC) is precipitated through the grit chamber, it enters the next slag separation tank, and after adding 100-300ppm of polyoxyethylene polyoxypropylene stearyl ether, 100-300ppm of polyaluminum chloride (PAC) is added. ), remove the floating substances through the grid, and then carry out dissolved air flotation to further gather small particles and small specific gravity substances in the wastewater, and then remove them through the fine grid.

[0048] After the above treatment, add 50-60 grams of sodium hydroxide and 50-60 grams of magnesium oxide in sequence, and after precipitation and separation, add H 2 o 2 After about 20-30g / L (relative to the volume of waste water), pass it into an ultra-high temperature and high pressure water oxidation reactor, keep the temperatu...

Embodiment 2

[0051] Add 400-700ppm to one cubic meter of pharmaceutical wastewater containing CODcr=3000mg / L, BOD5=1800mg / L, SS=600mg / L, TP=150mg / L, NH3-N=180mg / L, total nitrogen=450mg / L After the polymeric ferric sulfate (PFS) is precipitated through the grit chamber, it enters the next slag separation tank. After adding 150-350ppm of nonylphenol polyether, add 100-300ppm of polymeric ferric sulfate (PFS), and remove the floating through the grid. After that, dissolved air flotation is carried out, and the small particles and small specific gravity substances in the wastewater are further collected and floated, and then removed through fine grids.

[0052] After the above treatment, add 40-65 grams of sodium hydroxide and 40-65 grams of magnesium oxide in sequence, and after precipitation and separation, add about 15-40 g / L of oxygen, Cu (NO 3 ) 2 After about 15-30mg / L (relative to the volume of wastewater), pass it into an ultra-high temperature and high pressure water oxidation reactor...

Embodiment 3

[0055] Add 300-500ppm to one cubic meter of pharmaceutical wastewater containing CODcr=4000mg / L, BOD5=2000mg / L, SS=800mg / L, TP=180mg / L, NH3-N=200mg / L, total nitrogen=500mg / L Polyaluminum chloride (PAC) and 200-400ppm polyferric sulfate (PFS) are then precipitated through the grit chamber, and then enter the next slag separation tank, where 200-400ppm of polyoxyethylene polyoxypropylene stearyl ether is added, Add 100-300ppm polymerized ferric sulfate (PFS), remove the floating substances through the grid, and then carry out dissolved air flotation, and further gather and float the small particles and small specific gravity substances in the wastewater, and then remove them through the fine grid.

[0056] After the above-mentioned treatment, 60-90 grams of sodium hydroxide and 60-90 grams of magnesium oxide were sequentially added thereto, and after precipitation and separation, O was added therein. 3 After about 20-45g / L (relative to the volume of waste water), pass it into an...

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Abstract

The invention relates to a pharmaceutical wastewater treatment process which comprises the following steps of: adding a flocculating agent into wastewater and precipitating, adding a demulsifier and the flocculating agent into the precipitated wastewater, removing slag at the same, adding bivalent magnesium ions into the slag-removed wastewater and carrying out reaction precipitation, introducingthe wastewater subjected to reaction precipitation into water oxidation equipment containing an oxidizing agent and a catalyst for reaction, controlling the temperature in the water oxidation equipment to be higher than 374.3 DEG C and the pressure to be higher than 22.05 MPa, and performing biological treatment and coagulation separation on the reacted wastewater. On the basis of the existing biological treatment method, a plurality of chemical and physical treatment means are added to treat various pollutants and toxicological components in the wastewater, so that the burden of a biologicaltreatment system is greatly reduced, and the purpose of final up-to-standard emission is achieved.

Description

technical field [0001] The invention belongs to the fields of chemical and pharmaceutical wastewater treatment and environmental protection, and in particular relates to a process for treating pharmaceutical wastewater. Background technique [0002] Judging from the current development situation, my country's pharmaceutical industry is faced with the dilemma that there are many types of pharmaceutical products and few pharmaceutical companies. In the daily pharmaceutical production process, there are many raw materials required, serious pollution, and poor recovery rate. Therefore, increasing the research intensity of wastewater treatment technology is of great significance to protect the ecological environment of our country. In the new era, my country has successively promulgated waste water pollution discharge standards, which put forward higher requirements for the treatment and discharge of pharmaceutical waste water. The types of restricted drugs, including chemical sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F103/34
CPCC02F9/00C02F1/5245C02F1/40C02F1/24C02F1/001C02F1/586C02F1/58C02F1/725C02F1/722C02F1/78C02F3/00C02F2103/343C02F2209/16C02F2209/10C02F2209/08C02F2209/14
Inventor 董仕宏吴倩倩何文
Owner 苏州仕净科技股份有限公司
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