Sewage purifier and sewage purification method

Abstract

The invention discloses a sewage purifier, which comprises polyhydroxyalkanoate, diatomite, humic acid, a bioactivator, inorganic metal salt and other substances. The invention also discloses a sewage purification method by utilizing the sewage purifier. A completely biodegradable material polyhydroxyalkanoate is used as a sustained material of the bioactivator, and the completely biodegradable material is slowly degraded and releases the bioactivator so as to realize the long-term high-efficiency purification function of the bioactivator; and by combining the effects of aquatic plants, phosphorus, nitrogen, polycyclic aromatic hydrocarbon and heavy metals in the sewage are purified and treated, so the sewage purifier has better sewage treatment effect.

Description

【Technical field】 [0001] The invention relates to a sewage purifying agent and a sewage purifying method using the sewage purifying agent. 【Background technique】 [0002] With the acceleration of modern urbanization and industrialization, the pollution of rivers and water sources on which human beings depend is becoming more and more serious, and the water body appears to be black and smelly seasonally or all the year round. For example, the Suzhou Creek in Shanghai, the Outer City River in Suzhou, the Qinhuai River in Nanjing, the Pearl River in Guangdong, the Yongding River in Beijing, etc., as well as countless drainage ditches, ponds, seaside or riverside wetlands, park wetlands, etc. Serious pollution, in some places even threatens human drinking water sources, reservoirs, etc. Water pollution seriously threatens the quality of life and health of residents, restricts the development of the city itself, and destroys the beautiful image of the city. Therefore, after dec...

AI Technical Summary

Problems solved by technology

Patent CN03117968 proposes to use a variety of microbial composite preparations to deeply degrade pollutants in sewage, but there are ecological risks; patent CN02137442 proposes to use zeolite powder to adsorb microorganisms to jointly purify sewage, and the microorganisms used are domesticated special microorganisms; patent CN03114800.X It is proposed to use suspended packing bed as a flocculant to absorb and cultivate microorganisms to treat urban sewage; patent CN03111808.9 proposes to use nutrients required for microbial growth as a bioactivator to realize microbial in-situ purification of sewage; patent CN02148674.3 proposes immobilized microorganisms to treat Sewage, the microorganisms are fixed on the modified foam plastic, and then stacked in the sewage pool; patent CN02114538.5 proposes to use plastic bottles as microbial carriers, and stack the cultured microbial plastic bottles in the filter tank for purification

[0005] However, some of the above sewage purification methods require huge treatment equipment, some have a long treatment cycle, and some methods may even have ecological risks or cause secondary pollution to the environment, which cannot meet the current needs for sewage treatment.

[0006] In-situ purification of bioactive agents is an advanced sewage purification method in recent years, but the current purification method is expensive and not widely used.