Wastewater Treatment Technology

Introduction to Grit Chambers in Wastewater Treatment

Functions and Comparison of Aerated and Horizontal-Flow Grit Chambers

With the growing population and continuous advancements in medical technology, the number and scale of hospital laboratories have been gradually expanding, bringing the issue of wastewater treatment into sharp focus. Hospital laboratories must strengthen their wastewater treatment efforts to reduce pollution of the public environment and faithfully fulfill their environmental protection responsibilities.

Principle of Screw Press Sludge Dewatering Machine

Inadequate design parameters (e.g., insufficient HRT, excessive surface overflow rate) in secondary clarifiers can lead to sludge flotation, resulting in effluent SS violations. Over-optimization for cost reduction is a common cause, requiring balanced design and operational considerations.

Wastewater treatment: Learn what is Biological rope media

Biological Rope Media

The water treatment principle of biological rope media also falls under the biofilm method,primarily relying on microbial biofilms immobilized on the carrier surface to degrade organic pollutants.

Chemical Dosing System

A chemical dosing system is an integrated equipment designed for the precise dosing, mixing, liquid transfer, and automated control of chemicals. It is widely used in circulating water systems requiring the addition of corrosion inhibitors, scale inhibitors, and biocides for water quality treatment.

A chemical dosing system is an integrated equipment designed for dosing, mixing, liquid transportation, and automatic control. It is used in circulating water systems that require the addition of corrosion inhibitors, scale inhibitors, and biocides to achieve precise dosing and measurement of water treatment chemicals.

Aeration and oxygen supply should be relatively simple for experts, and mainly involves three items: calculation of aeration volume (which has a lot to do with water quality and water volume), aeration fans and aeration devices. There are many methods to calculate aeration volume, each method has its own advantages and disadvantages (mainly simplicity and deviation rate). Everyone can choose a method according to the project situation and their own needs.

The A/O process was produced in the 1970s. Because it has the functions of degrading organic matter and denitrification at the same time, and is easy to operate and manage, it has been widely used. Since the sewage treatment process is determined based on many factors such as the amount of sewage, water quality, effluent requirements and local actual conditions, small and medium-sized urban domestic sewage treatment stations generally use A/O and other processes.

The oxidation ditch process, as a mature activated sludge sewage treatment process, has been widely used throughout the country.

The biofilm method is an artificial enhancement of the soil self-purification process. It mainly removes soluble and colloidal organic pollutants in wastewater, and also has a certain nitrification ability for ammonia nitrogen in wastewater. The biofilm method is widely used in the treatment of industrial wastewater.

A2/O process is the abbreviation of Anaerobic-Anoxic-Oxic, which is the abbreviation of anaerobic-anoxic-aerobic biological denitrification and phosphorus removal process. The treatment efficiency of this process can generally reach: BOD5 and SS are 90% to 95%, total nitrogen is more than 70%, and phosphorus is about 90%.

In recent years, the wastewater treatment industry has undergone significant transformations, driven by advancements in intelligent technologies such as the Internet of Things (IoT), big data, and artificial intelligence (AI). These technologies have allowed for enhanced automation, real-time monitoring, and more efficient management of wastewater treatment processes, leading to significant improvements in operational efficiency and energy savings.

The sedimentation tank is a commonly used device in the water treatment process. Its main function is to make the solid particles in the water settle to the bottom of the tank through gravity, achieving water purification. Sedimentation tanks are widely seen in diverse water treatment systems, including tap - water treatment, sewage treatment, and industrial wastewater treatment.