Novel compositing agglomerant, and riverway, lake in-situ dredging and ecological restoration technology

Abstract

The invention discloses a novel compositing agglomerant, and a riverway, lake in-situ dredging and ecological restoration technology. The novel compositing agglomerant comprises the following components in parts by weight: 70 to 90 parts of diatomite, 20 to 30 parts of aluminium potassium sulfate, 20 to 30 parts of sodium carbonate, 15 to 20 parts of an inorganic chelating agent, 15 to 20 parts of a buffering agent, 8 to 10 parts of an enzyme biological accelerator and 6 to 8 parts of a deodorizing agent. In-situ dredging is adopted, construction is directly conducted in the riverway or the lake, and sludge obtained after treatment does not need to be transported outwards and filled, so that a large amount of manpower and financial resources are saved, and secondary pollution is avoided; due to in-situ dredging, sludge residues at the bottoms of the river and the lake are eliminated maximally, and activation and recovery of soil family microbial culture in riverbed and lake base mud are benefited; the novel compositing agglomerant has the advantages of high agglutination and settling speed, low water content of the sludge and small occupied land during operation, and meets the requiremets of river and lake management, so that water quality is improved, the activity of the river and lake sludge is recovered gradually through management, the river and the lake recover the self-cleaning capability, and ecological balance is achieved.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a novel composite coagulant and in-situ desilting and ecological restoration technology for river courses and lakes. Background technique [0002] The pollution of rivers and lakes can be divided into exogenous pollution and endogenous pollution. [0003] The internal source pollution of rivers and lakes is mainly caused by a large amount of external source pollution entering the river, resulting in the internal source pollution of rivers and lakes after the inherent self-purification ability of rivers and lakes and the destruction of their ecological systems. Effective control of exogenous pollution is a prerequisite for remediation of endogenous pollution. [0004] When exogenous pollution is under control, endogenous pollution is the decisive factor in determining the water quality of rivers and lakes. River and lake treatment, on the basis of sewage interception, clears the ...

AI Technical Summary

Problems solved by technology

[0010] (4) During the construction of the dredging project, the volatile odor pollution of the silt will have a great impact on the surrounding living environment

Although this method uses a physical and chemical treatment method, it still cannot fundamentally eliminate the possibility of secondary pollution in the dredging project; at the same time, there are still silt residues at the bottom of the river and lake, which will affect the soil microbial strains in the river bed and lake base mud in the future. The activation and restoration of large negative impacts, the damage to the ecological environment of rivers and lakes still exists