Method for water purification by biological decontamination

Abstract

The invention discloses a method for water purification by biological decontamination. The method includes: firstly, sludge stirring and separation, to be more specific, adopting mobile sludge exposure equipment for re-deposition of sludge at bottoms of treated rivers and lakes; secondly, establishment of a microorganism survival carrier system, to be more specific, adding carbon sources and microorganism bacterial beds into the treated rivers and lakes to provide a reproduction, parasitism and growth environment for dominant bacterial communities; thirdly, culture and feeding of the dominant bacterial communities, to be more specific, extracting microorganisms with a water purification function from the treated rivers and lakes to form the dominant bacterial communities, and feeding into polluted water engineering sections; fourthly, installation of water aeration equipment; finally, promotion of a water self-purification function, to be more specific, allowing the dominant bacterial communities to quickly reproduce under the aeration action so as to realize in-situ nitrification and degradation of organics in sludge and water and degradation and conversion of ammonia, nitrogen and phosphorus pollutants. The method has advantages that in-situ nitrification and degradation of sludge can be realized, effectiveness in treatment, low investment, short duration and convenience in maintenance are realized, water treatment effects can be kept for a long time, and the problem of a vicious circle of treatment and pollution is solved thoroughly.

Description

technical field [0001] The invention relates to sewage treatment, in particular to a biological pollution-clearing and water-purifying method with quick results, easy operation, no secondary pollution, and treatment of both symptoms and root causes. Background technique [0002] At present, most of the domestic urban lakes and rivers are responsible for urban flood storage and flood detention. When there is heavy rain, the discharged rainwater carries a large amount of domestic garbage and mud and dust to form silt, and the silt is anaerobically fermented into black and smelly sludge, which is seriously polluted The water body cannot be kept clean for a long time. [0003] The urban infrastructure and underground drainage pipe network are relatively old, and the discharge and deposition of organic pollutants cause the imbalance of the river's oxygen balance system. Sewage has aggravated the pollution of urban lakes and rivers. After the water quality deteriorates, the bact...

AI Technical Summary

Problems solved by technology

This method can nitrify and degrade sludge on site, has good treatment effect, low investment, short construction period, convenient maintenance, can maintain the effect of water body treatment for a long time, and completely solve the problem of remediation-pollution-re-remediation-re-pollution; at the same time, lakes, rivers The quality of gushing water has been improved, and the main indicators such as ammonia nitrogen can reach the standard of surface water V; it provides an economical, convenient and practical method for the treatment of black and odorous sludge in many urban lakes and rivers