Combined treatment agent for domestic sewage treatment

Abstract

The invention discloses a combined treatment agent for domestic sewage treatment. The combined treatment agent is prepared from a compound microbial agent, a primary chemical treatment compound agentand a secondary chemical treatment compound agent, wherein the compound microbial agent is prepared from the following compositions: 6 to 8 parts of nitrifying bacteria, 5 to 7 parts of denitrifying bacteria, 3 to 5 parts of bacillus, and 16 to 20 parts of phosphorus-accumulating bacteria; the primary chemical treatment compound agent is prepared from the following components: 40 to 50 parts of ferric trichloride, 22 to 26 parts of ferrous sulfate, 6 to 8 parts of polyaluminium chloride-polyacrylamide, 3 to 5 parts of polyaluminium chloride-chitin, 8 to 10 parts of aluminum cross-linked rectorite, 16 to 20 parts of sodium carbonate, 25 to 35 parts of sodium lauryl sulfate; the secondary chemical treatment compound agent is prepared from the following components: 32 to 34 parts of modifieddiatomaceous earth, 12 to 14 parts of modified fly ash, and 44 to 48 parts of modified attapulgite.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a combined treatment agent for domestic sewage treatment. Background technique [0002] Domestic sewage is mainly various detergents used in urban life, sewage, garbage, feces, etc., mostly non-toxic inorganic salts. Domestic sewage contains a lot of nitrogen, phosphorus, sulfur, and many pathogenic bacteria. The sewage generated in the process of human life is one of the main sources of water pollution, mainly feces and washing sewage. The amount of domestic sewage discharged per person in a city is 150-400L per day, which is closely related to the living standard. [0003] Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar and fatty protein; it also often contains pathogenic bacteria, viruses and parasite eggs; inorganic salts such as chloride, sulfate, phosphate, bicarbonate and Cu 2+ , Pb 2+ 、Ni 2+ 、Cr 3+ and other heavy metal ions....

AI Technical Summary

Problems solved by technology

These indicators are high, one does not meet the discharge standards, and the other leads to the failure of water resources to be reused

There are many types of sewage treatment agents in the prior art, but in order to increase the sewage treatment effect, a large number of additives are added in the preparation process, and the preparation method is relatively complicated, and the process conditions are relatively high, which has caused certain economic pressure on the factory. , and the sewage treatment effect is not ideal, most of them can only be used as reclaimed water

Moreover, most of the water treatment agents in the prior art are a single treatment result, and do not distinguish the uses and needs of the treated water.