In view of the problems of small and slow municipal sludge feed and high water content, it can be considered and solved from the following aspects:
1. Sludge feeding problem
Source control:
Check the inlet water quality and quantity of the sewage treatment plant to ensure the stability of the inlet water and avoid the instability of the sludge production caused by water quality fluctuations.
Optimize the wastewater treatment process, improve the sludge capture rate, and thus increase the sludge feed amount.
Sludge storage and transport:
Improve sludge storage facilities to ensure that sludge is not lost and not corrupt during storage.
Optimize the sludge transport system, such as using more efficient sludge pumps or pipeline transport methods, to improve the efficiency of sludge transport.
Two, sludge moisture content problem
Chemical conditioning:
The use of sludge dehydrating agents (also known as sludge conditioning agents), such as organic flocculants, inorganic flocculants, composite flocculants, etc., through chemical reactions to change the nature of the sludge, so that it loses the ability to absorb water.
Select the appropriate type and dosage of conditioner according to the nature of sludge to achieve the best dewatering effect.
Mechanical dehydration:
The use of filter press, plate and frame filter press, belt filter press and other mechanical dewatering equipment, through physical means to remove the water in the sludge.
Optimize the operating parameters of the mechanical dehydration equipment, such as pressure, filtration time, etc., to improve the efficiency of dehydration.
Heat treatment:
Heat treatment equipment such as steam dryers and hot blast furnaces are used to heat sludge to evaporate the water in it.
Considering the high energy consumption of heat treatment methods, the selection should be combined with the actual situation and economy.
Biological treatment:
Using the action of microorganisms to degrade organic matter in the sludge, thereby reducing the water content in it.
Biological treatment methods are environmentally friendly and pollution-free, but the treatment time is longer and the requirements for operators are higher.
3. Comprehensive Measures
Optimization of sludge treatment process:
According to the actual situation, choose the most suitable sludge treatment process combination, such as chemical conditioning + mechanical dehydration, biological treatment + heat treatment, etc.
The sludge treatment efficiency and dewatering effect were improved through process optimization.
Strengthen sludge management:
Establish and improve the sludge management system, and standardize the storage, transportation, treatment and disposal process of sludge.
Strengthen the maintenance and maintenance of sludge treatment equipment to ensure its normal operation and efficient use.
Promotion of advanced technology:
Pay attention to the latest technological progress in the field of sludge treatment, and actively introduce and promote advanced sludge treatment technology and equipment.
Improve the overall level and efficiency of sludge treatment through technological innovation and upgrading.
In summary, in view of the small and slow feed of municipal sludge, the problem that the water cut is too high to fall can be solved from the source control, sludge storage and transportation, chemical conditioning, mechanical dehydration, heat treatment, biological treatment and comprehensive measures. By adopting a series of effective measures and technical means, the sludge treatment condition can be gradually improved, and the sludge treatment efficiency and dewatering effect can be improved.