Detection of high and low calorific values of sludge

Wastewater treatment plants are a line of defense for urban and rural water pollution control. During sewage treatment, a large amount of sludge is generated, which has a complex composition and containsillnessSource microorganisms, parasite eggs, toxic and harmful heavy metals, and large amounts of recalcitrant substances, if not handled properly, can easily cause secondary pollution to the environment. Industry insiders point out that the large amount of toxic and harmful substances contained in sludge, including heavy metals, persistent organic pollutants, parasite eggs, and pathogenic microorganisms, if not properly disposed of, will inevitably become the "timing" for triggering environmental crises, greatly reducing pollution reduction achievements.

Detection of high and low calorific values of sludgeSludge testing report project:

1. Elemental analysis: Total sulfur, carbon, hydrogen, nitrogen, oxygen, chlorine, sulfur, etc.

2. Physical and chemical index testing: chloride ions, low-level heat generation, high-level heat generation, particle size, sediment content, bulk density, etc.

3. Pollution indicators: pH, fatty acids, total alkalinity, organic matter content, moisture content, mixed sludge concentration, phenols, total bacterial count, total mercury, arsenic and its compounds, total nitrogen, total phosphorus, total potassium, petroleum hydrocarbons, etc.

4. Industrial analysis: moisture, volatile matter, ash content, fixed carbon.

5. Loss on ignition and radioactive nuclide indicators: Loss on ignition, radioactive nuclide.

6. Ash component detection: silicon dioxide, aluminum oxide, calcium oxide, magnesium oxide, titanium oxide, potassium oxide, sodium oxide, manganese dioxide, etc.

7. Leaching toxicity items: lead, arsenic, copper, nickel, zinc, chromium, hexavalent chromium, cadmium, mercury, beryllium, inorganic calcium fluoride, alkylmercury, etc.

8. Ash melting detection: deformation temperature, softening temperature, hemisphere temperature, flow temperature, etc.

Detection of high and low calorific values of sludgeSludge detection indicators:

1. Microorganisms: The types and quantities of microorganisms in sludge will show significant changes after digestion and composting treatment, especially before greening, agriculture, and other treatments, which require detection of pathogenic microorganisms.

2. Volatile substances and ash content: Volatile substances represent the amount of organic impurities contained in sludge, while ash content represents the amount of inorganic impurities contained in sludge.

3. Toxic substances: In order to avoid environmental impact, it is necessary to detect toxic substances such as mercury and lead in sludge and its products.

4. Moisture content and solid content: Sludge with high moisture content has low solid content, while sludge with low moisture content has high solid content. The remaining sludge undergoes concentration, digestion, and dewatering treatment, and the moisture content of the dewatered sludge will significantly change. Changes in moisture or solid content can reflect the effectiveness of the concentration, digestion, dewatering, and other treatment processes.

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