City and town medium-and-small river sludge ecological treatment system

Abstract

The invention discloses a city and town medium-and-small river sludge ecological treatment system. The system comprises five subsidiary modules of a river dredging subsidiary module, a slurry pumpingsubsidiary module, an agent adding device subsidiary module, a reaction device subsidiary module and a slurry dehydration and solidification subsidiary module; the city and town medium-and-small riverdredging subsidiary module is connected with the slurry pumping subsidiary module and the agent adding device subsidiary module, macromolecular flocculation agent for water treatment is selected according to analysis of river sediment properties, the agent is put into the slurry pumping subsidiary module through the agent adding device subsidiary module, slurry is fully reacted with the agent inthe reaction device subsidiary module, and finally solidification is conducted in a dehydration container of the slurry dehydration and solidification subsidiary module to achieve slurry-water separation. The sludge is subjected to reduction, stabilization, hazard-free treatment and resourceful treatment; the construction noise is low, secondary pollution is not easily caused, the treatment and volume reduction effect of the wastewater and the slurry is good, the treatment and volume reduction efficiency of the wastewater and the slurry is high, the size of the sludge can basically be reducedby 50% or above within one month, a fixed plant is not needed, the treatment cost is low, the treatment capability can be flexibly adjusted, and the application range is wide.

Description

technical field [0001] The invention belongs to the treatment technology of IPC classification C02F water, waste water, sewage or sludge, especially an ecological treatment system for sludge in small and medium rivers in cities and towns. Background technique [0002] my country's per capita water resources only account for 1 / 4 of the world's average level. Urban lakes and rivers are an important part of urban ecosystems. Carrying out comprehensive water environment improvement is of great significance for maintaining urban ecological balance and improving the living environment. The main projects of water environment improvement include: comprehensive improvement of backbone rivers, ecological management of small and medium-sized rivers, cleaning of rivers, ponds and ditches in cities and towns, ecological management of lakes and reservoirs, etc. The guiding ideology of water environment improvement is: pay attention to source control and strengthen water pollution control....

AI Technical Summary

Problems solved by technology

However, this treatment method adds additional transportation costs, the sludge drying speed is slow, and the harmful substances in the river sludge are not treated, which is likely to cause secondary pollution to the environment, especially the heavy metals in the sludge will Serious harm to drinking water and food safety, endangering human health and survival

[0011] Among them, the mechanical dehydration method is to dehydrate the river sludge through mechanical equipment such as filter press and vacuum system. After the treatment, the sludge can be reduced and recycled, but the equipment investment is large and the treatment cost is high.

The mechanical dehydration method uses centrifugal machinery, filter press machinery or vacuum methods for mechanical dehydration. The equipment occupies a large area, consumes electricity, and requires a large investment. After dehydration, the sludge needs to be buried deep, incinerated or other secondary harmless treatment

Mechanical dehydration is carried out by centrifugal machinery, filter press machinery or vacuum. The equipment occupies a large area, consumes electricity, and requires a large investment. After dehydration, the sludge needs to be buried deep, incinerated or other secondary harmless treatment

Images