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How to discharge and treat sludge from sewage treatment plants?

August 9, 2024

Sludge is one of the important sources of environmental pollution, and proper and effective sludge treatment is crucial for environmental protection and human health. This article starts with sludge discharge, introduces the entire process of sludge treatment, explores the key technologies and measures of sludge treatment, and introduces the professional sludge treatment technology services of Balos Group.

1、 Sludge discharge

Sludge is a byproduct of sewage treatment and an important source of environmental pollution. Incorrect handling can cause serious environmental damage and have an impact on human health. Therefore, sludge discharge should be subject to strict supervision and control.

In China, the current regulations related to sludge discharge mainly include the "Utilization and Disposal of Sludge in Sewage Treatment Plants" and the "Technical Policy for Sludge Treatment in Urban Sewage Treatment Plants". These regulations stipulate the discharge standards and treatment requirements for sludge, and strengthen the supervision and control of sludge discharge.

2、 Sludge pretreatment

Sludge needs to undergo pretreatment before treatment, including dehydration, concentration, and drying steps. The main purpose of dewatering is to remove water from sludge for subsequent treatment. Concentration is the process of concentrating dehydrated sludge to reduce its volume and weight. Drying is the process of treating concentrated sludge through drying for subsequent utilization and disposal.

Barlow Group provides robot dredging services that can effectively remove sludge and reduce its moisture content.

3、 Sludge treatment technology

1. Thermal decomposition treatment technology

Pyrolysis is the process of treating sludge at high temperatures to decompose organic matter into water and carbon dioxide. The advantage of this treatment technology is that the dried sludge after treatment is easy to handle and lightweight. Barlow Group provides sludge drying technology services, using solar drying technology to naturally dry sludge without the need for energy.

2. Anaerobic digestion technology

Anaerobic digestion is the process of placing sludge in a closed container, applying appropriate pressure and temperature to ferment and decompose the organic matter in the sludge, producing biogas as an energy source. In anaerobic digestion treatment, it is necessary to pay attention to controlling the changes in temperature and pH value in order to achieve optimal results.

4. Sludge reduction

Sludge reduction refers to the use of certain technological means to reduce the amount of treated sludge, in order to reduce its impact on the environment and lower treatment costs. The main methods of reduction treatment include biological deodorization and pressure screening technology.

5. Resource utilization of sludge

After sludge treatment, it can be disposed of through incineration, landfilling, or converted into resource utilization. There are various ways to convert sludge into resources, such as for agricultural fertilizers, soil improvement, fuel, and building materials.

Barlow Group provides technical services for sludge resource utilization, including fertilizer production, building material production, and factory electricity production using sludge as raw material.

Sludge treatment is one of the key measures for environmental protection, which requires the use of various technological means to achieve efficient treatment and resource utilization based on the types and characteristics of pollutants. Balos Group provides professional sludge treatment technology services, which can effectively solve the problem of sludge treatment. In the future, sludge treatment technology needs further development and research to achieve more efficient, economical, and environmentally friendly treatment methods.