Method for ecologically restoring polluted water by applying compound microorganism technology

Abstract

The invention discloses a method for ecologically restoring polluted water by applying a compound microorganism technology. A compound microorganism thallus concentrated solution consists of the following 10 thalluses in parts by weight: 5 to 15 parts serratia, 5 to 15 parts of photosynthetic bacteria, 5 to 15 parts of yeast cell, 5 to 15 parts of denitrifying bacteria, 5 to 15 parts of lactic acid bacteria, 5 to 15 parts of actinomycetes, 5 to 15 parts of BD bacteria, 5 to 15 parts of nitrogen-fixing bacteria, 5 to 15 parts of nitrifying bacteria and 5 to 15 parts of bacillus subtilis, wherein the total bacterial count in the compound microorganism thallus concentrated solution is not less than 109 pic / ml. According to the invention, the treating process is environment-friendly, healthful and safe, undesirable odor such as hydrogen sulfide and ammonia nitrogen is not easy to generate, the transparency of the restored water is more than 1.5 m, and the removal ratio on algae, total nitrogen, total phosphorus and COD is 95-99%, 95-99% , 90-95% and 90-95% respectively.

Description

technical field [0001] The invention relates to a method for treating sewage, in particular to a method for ecological restoration of polluted water bodies using composite microorganism technology. Background technique [0002] The treatment methods of urban black and odorous rivers can be roughly attributed to physical methods, chemical methods and biological methods, and physical methods are currently the main method. Generally, the bottom mud of the river channel is relatively thick, and the bottom mud contains a large amount of pollutants, such as organic matter, nitrogen, phosphorus, etc. Most of the urban rivers are open, and there are two main pollution sources of the river water, one is the sewage discharged into the river, and the other is the pollutants released from the sediment into the river. The conventional method of river channel management is dredging and sewage interception. The method of dredging is to use the gates of the river channel or artificial coff...

AI Technical Summary

Problems solved by technology

[0005] 1. The amount of dredging of the river is large, the cycle is long, and the cost of the project is high;

[0006] 2. The management of river sewage interception is very difficult and cannot be implemented in a short period of time;

[0007] 3. After the water quality is improved, it is difficult to maintain. Since it is difficult to prevent and control the discharge of pollutants in the open river, after a period of treatment, the river will gradually become black and smelly, and new polluted sediment will gradually form.

[0009] 1. Chemical methods, such as adding chemical agents to kill algae, adding iron salts to promote the precipitation of phosphorus, adding lime to denitrify, etc., but it is easy to cause secondary pollution;

[0010] 2. Physical methods, such as dredging sediment, mechanical algae removal, diversion of water to wash away silt, etc., but often treat the symptoms but not the root cause;

[0012] In the regulation of landscape lakes, dredging, bank revetment, plant greening and sewage interception are used to remediate the lake body. Not only is the project complicated, the investment cost is high, and it cannot fundamentally improve the water quality and self-purification ability of the river.