Sludge treatment engineering
The company makes full use of diversified technology featuring“sanitary landfill, land utilization, building material and incineration”in terms of sludge treatment and disposition project. It provides customer with all-around sludge treatment solution to reach national standard of“minimization, stabilization, harmless and reutilization” .
Emergent treatment technology-lime stabilization method
Reaction Principle
1kgCaO+0.32kgH2O→1.32kgCa (OH) 2+1177KJ
1.32kg Ca (OH) 2+0.78kgCO2→1.78kgCaCO3+0.32kgH2O+2212KJ
2AlPO4+3Ca (OH) 2→Ca3 (PO4) 2+2Al (OH) 3
Technical Process
Land utilization technology-aerobic composting
Technical Process
Technical Advantage
Harmless: temperature rise to 60 degree, pathogenic bacteria and parasitic ovum die, foul smell disappear
Stabilizing: organic matter decomposes and turns to stable humus by microbial action
Reducing quantity: moisture is evaporated, organic matter decomposes, piles reduce in volume and weight reduces
Reclamating: fermented product can be used for land improvement, landscaping, refuse landfill coverage, construction material
Technical Feature
Feature 1: saving occupied area
Feature 2: control bad smell overflow
Feature 3: no need of many auxiliary materials
Feature 4: system is safe and reliable
Incineration technology——separate drying incineration
This technology guarantees requirement on economy and environment protection by sludge treatment by balance of waste heat from sludge incineration system and head demanded by dry system. If heat demanded by dry system is too much, and waste heat supplied by incineration system is not sufficient to dry sludge to self burning, increase auxiliary thermal source. However, compared with direct combustion, increase of auxiliary heat source reduces significantly. During operation process, regulate heat source and inlet air temperature according to temperature inside the furnace, which saves energy consumption to the largest extent and increases adaption of furnace to each sludge heat value.
Technical Process
Technical Equipment
Incineration technology——collaborative incineration
Technical Process
Technical Requirement
Garbage sludge collaborative incineration is mainly for generating electricity through refuse incineration, and for sludge treatment partially.It extracts certain steam from power generation process as heat source for sludge drying, recycle some heat source by sending dry sludge to furnace for incineration. Sludge in the furnace should meet technical requirement by garbage incineration:
(1)Sludge in furnace should meet with requirement on heat value by garbage incineration. It should not affect or should have minimum impact on incineration environment in the furnace;
(2)Sludge in furnace should not be higher than 15% of waste incineration amount to ensure waste heat reduction rate <5%.
(3) The way of sludge entering furnace should meet with the requirement that sludge is mixed with garbage at certain rate. The technical part of sludge entering furnace is a key point to realize mixed combustion of garbage.