Treatment method of pharmaceutical chemical industry park hybrid waste water

Abstract

The invention discloses a method for processing mixed waste water in a pharmaceutical chemical industry park, and belongs to the water processing field. The method comprises the following steps: after regulation of water quantity and water quality is performed to the mixed waste water in the pharmaceutical chemical industry park, the mixed waste water flows into a hydrolytic tank, the hydrolytic tank is filled with suspension type filling material inside, and an up-flow type water distribution method is adopted; the water outlet of the hydrolytic tank enters into an anaerobic tank, the anaerobic tank also adopts an up-flow type water distributing method; the water outlet of the anaerobic tank enters into a moving bed biofilm reactor, suspended filling is added into the moving bed biofilm reactor, and an aeration device is arranged on the bottom of the tank; the water outlet of the moving bed biofilm reactor enters into a biological aerated filter through adopting the form of sprinkling at upper part, and ceramic filling is added into the biological aerated filter; the water outlet of the biological aerated filter enters into a sedimentation tank and a coagulation reaction tank for deposition in sequence. According to the characteristics of high concentration and complex component of the organic matter of the mixed waste water in the pharmaceutical chemical industry park, the invention can perform rapid and highly efficient treatment at a proper time, the water outlet can meet the latest pharmaceutical waste water discharge standard of the state, and the COD is less than 100 mg / L.

Description

technical field [0001] The invention relates to a method for treating organic waste water in industrial and industrial parks, and more particularly to a method for treating mixed waste water in pharmaceutical and chemical industry parks. Background technique [0002] There are more than 5,000 pharmaceutical industry enterprises in my country, producing nearly 1,500 kinds of chemical raw materials, with a total output of 430,000 tons, ranking second in the world; the pharmaceutical industry uses an average of 6 tons of chemical raw materials to produce 1 ton of raw materials, and some of them are as high as dozens of tons. tons or even hundreds of tons. The pharmaceutical industry is one of the 12 important industries under the national environmental protection plan. According to statistics, the pharmaceutical industry accounts for 1.7% of the country's total industrial output value, while the sewage discharge (24.31 billion tons in 2005) is about 2% of the total industrial wa...

AI Technical Summary

Problems solved by technology

Microbial biochemical treatment method is recognized as one of the methods with high treatment efficiency and good effect, but there are still many defects in the simple application of biochemical treatment to the treatment of pharmaceutical industry wastewater

At present, the biochemical treatment method of "hydrolysis + biological contact oxidation" is often used in China to treat pharmaceutical industrial wastewater, but the biochemical treatment method of "hydrolysis + biological contact oxidation" has strict requirements on nutrients and pH values ​​in wastewater, and it is difficult to adapt to the mixing of pharmaceutical and chemical industry parks. Wastewater has the characteristics of many types of organic matter, large fluctuations in water quality, and high toxicity

[0005] There have been a lot of researches on the sewage treatment of specific pharmaceutical and chemical factories, but due to the high concentration and refractory characteristics of mixed wastewater in pharmaceutical and chemical industrial parks, it is still difficult to completely decompose and completely treat some of the refractory characteristic organic substances.