Classification of sludge:

Due to the different sources of sludge and water treatment methods, the nature of the generated sludge is different, there are many types of sludge, the classification is more complex, and it can generally be classified according to the following methods.

(1) According to the source, it is mainly divided into domestic sewage sludge, industrial wastewater sludge and water supply sludge;

(2) According to the treatment method and separation process can be divided into: primary sludge, activated sludge, humus sludge, chemical sludge;

(3) According to the different production stages of sludge: precipitation sludge, humus sludge, raw sludge, digested sludge, concentrated sludge, dehydration and drying sludge, dry sludge, etc.

(4) According to the composition and properties of sludge can be divided into: organic sludge, inorganic sludge, hydrophilic sludge, hydrophobic sludge.

Use of sludge air heat pump:

River and canal sludge with a variety of microorganisms has been ignored by people for a long time, and it also brings a lot of difficulties for urban environmental governance. The sludge air energy heat pump equipment developed by Guangzhou Clariant can dry the sludge, which is convenient for the production of sludge bio-organic fertilizer, and is the preferred drying equipment for organic fertilizer manufacturing enterprises. With the enhancement of national economic strength and the improvement of national environmental protection awareness, the urban sewage treatment industry has developed rapidly, the output of urban sludge is increasing day by day, and the disposal and development and utilization of sludge are increasingly concerned by people. The drying treatment of sludge makes it possible to use sludge for agriculture, as a fuel, incineration and even to reduce landfill land.

It can fully realize the "reduction, stabilization, harmfulness and resource" treatment of sludge, and the final sludge particles can be used as fertilizer, fuel, incineration, building materials, biofuels, landfill soil cover, land use, etc.

2, the use of continuous mesh belt drying mode, suitable for all types of sludge drying system (including large sand content sludge), long service life.

3, can dry 80% water content mud cake into 10% water content sludge particles; The sludge reduction capacity is 1/4-1/5, and the sludge calorific value after drying of urban sludge can reach 3000kcal/kg.

4, sludge extrusion molding and grinding molding patented technology, according to the sludge solid content of different using different laying mode.

5, low temperature (40-75℃) fully closed drying process, no exhaust emissions, no odor treatment system; The use of low temperature drying can fully avoid volatilization of different types of organic matter in the sludge to avoid volatilization of malodorous gases (the volatilization temperature of chain alkanes and aromatic hydrocarbons is 100-300℃, the volatilization temperature of cycloalkanes is mainly 250-300℃, and the volatilization temperature of nitrogen compounds, amines and oximes is mainly 200-300℃. The volatilization temperature of alcohols, ethers, fat ketones, amides and nitriles is above 300℃. In addition, the volatilization temperature of aldehydes and anilines is mainly 150℃, and the volatilization temperature of lipids is 150-250℃).

6, the whole drying process can be carried out under closed environmental conditions, there will be no gas discharged to the external environment, will not cause secondary environmental pollution; No pollution is discharged during the drying process, and the sanitary conditions of the drying workshop are good. Select the centralized water cooling mode, the cooling effect is good, and the working temperature of the workshop is excellent.

7, the system operation is safe, no explosion danger, no need to flush nitrogen operation; The oxygen content of the sludge drying process is <12%, the dust concentration is <60g/m3, the particle temperature is <70℃, and the whole drying process is dust-free (the air flow rate is <2 m/s).

8, the transmission speed of the mesh belt is controlled by frequency conversion, and the water content of the sludge discharge is adjustable (10-30%), which meets the requirements of various types of processes.

9, the use of leading heat pump dehumidification technology, energy saving more than 40%, per 1kg.H20 power consumption of about 0.3~0.4kw.h; Traditional sludge drying equipment 1 kg.H20 needs to consume 1kw.h energy, in addition to consumption of electricity, cooling water, chemicals, etc. The use of off-peak power consumption mode can save more than 60% of energy.

10, the equipment covers a small area, easy to install; Every 1000kg of water evaporation equipment covers an area of about 3.5m2.

11, a single drying line daily processing capacity of up to 45 tons (80% moisture content mud cake), water content of 55% mud cake daily processing capacity of up to 140 tons, can be suitable for sludge dispersion or centralized processing mode, through the mud biscuit treatment to achieve capacity reduction, Save sludge transportation costs (about 100 yuan per ton of sludge transportation costs depending on the road) and reduce environmental pollution during transportation.

12, using PLC+ touch screen control system, automatic operation, easy operation and management; Wet and dry bulb temperature and humidity control, feed frequency control, molding control, discharge solid content control, laying control, manual control, etc.