1. A contact tank is a key unit used in wastewater treatment in chemical equipment. It primarily disinfects the effluent from the sedimentation tank. It inactivates harmful microorganisms by extending the contact time between the wastewater and the disinfectant. 2. The principle of a contact tank is to utilize the
1. An accident emergency tank (also known as an accident buffer tank or emergency accident tank) has the core function of collecting and storing wastewater generated during an accident (such as leaked materials, firefighting water, and contaminated rainwater), preventing it from entering the external environment or sewage treatment systems. This prevents environmental
1. Functions of a sewage treatment regulating tank: 1.1 Used to balance water quality and quantity, improving the stability and efficiency of subsequent treatment processes. 1.2 Effectively balances peaks and troughs in water flow to prevent overload of treatment equipment. 1.3 Promotes the sedimentation of suspended solids and the degradation
1. Rotary disc filter components: It includes a raw water receiving device, a central water inlet and distribution device, filter discs, a drive unit, a backwash device (including a backwash pump and spray system), a sludge removal system, a liquid level tank, and supporting liquid level instrumentation and control systems.
Wastewater disinfection is a water treatment process that uses disinfectants such as chlorine, sodium hypochlorite, and chlorine dioxide to kill harmful pathogenic microorganisms in domestic sewage and certain industrial wastewater. After secondary biochemical treatment, microorganisms such as E. coli may still remain in the sewage, requiring disinfection to prevent the
The sludge treatment process includes four treatment or disposal stages. The first stage is sludge concentration, the main purpose of which is to initially reduce the volume of sludge and reduce the volume of subsequent treatment structures or equipment capacity; the second stage is sludge digestion, which decomposes the organic
The sewage pumps can be categorized into five main types based on their structure, operating principle, and application scenarios: submersible, in-line, self-priming, vertical, and horizontal. Key differences lie in installation methods, media handling capacity, and applicable environments. 1.1 Structure Types and Installation Features 1.1.1 Submersible Sewage Pumps: These pumps operate
1. Screen Scrubber: Used to intercept large floating particles (such as plastic and paper scraps) in sewage, preventing clogging of subsequent equipment and ensuring the normal operation of the treatment system. 2. Grit Chamber: Removes grit and inorganic matter from sewage through gravity separation, reducing the load on subsequent treatment.
1.1 Pressure Instruments: Local pressure gauges, remote differential pressure transmitters, or pressure switches that transmit digital signals. 1.2 Temperature Instruments: Contact and non-contact thermometers. 1.3 Flow Meters: Volumetric flow meters output signals reflecting volumetric flow rate, including electromagnetic flow meters, vortex flow meters, and ultrasonic flow meters. Mass flow meters
1. Composting is a process in which organic matter is continuously degraded and stabilized under specific conditions through microbial activity, producing a product suitable for land application. 2. The four core processes of sludge composting include pretreatment, primary fermentation, secondary fermentation, and post-treatment. These processes utilize microbial activity to achieve
