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12-25

Attend the 2024 Spring Qingdao Pharmacy Exhibition

01-12

Key points for softening water equipment installation

Softened water equipment installation requirements

01-07

Polishing resin function and filling method of ultrapure water equipment

Polishing resin is generally used at the end of ultrapure water treatment systems to ensure that the system's effluent water quality meets the water use standards. The effluent water quality generally has a resistivity of 18.25MΩ or higher, and has a certain control ability over TOC and SiO2. Good polishing resin can achieve TOC <5ppb, silica <10ppb, resin models are MB-106up & MB-115, and the polishing resin ion type is H, OH type. It can be used directly after filling without regeneration, and is generally used in the semiconductor industry.

12-22

MBR knowledge

In the field of wastewater treatment and water reuse, MBR, also known as membrane bioreactor, is a new type of water treatment technology that combines membrane separation units with biological treatment units. Membranes come in a wide variety of types. Classified by separation mechanism, there are reaction membranes, ion exchange membranes, and permeation membranes; classified by membrane properties, there are natural membranes (biological membranes) and synthetic membranes (organic and inorganic membranes); classified by membrane structure, there are flat plate type, tubular type, spiral type, and hollow fiber type, etc.

12-06

What is severe fouling of reverse osmosis membranes?

As a deep filtration method, reverse osmosis membrane elements inevitably have colloids, microorganisms, impurity particles, and the precipitation of sparingly soluble salts remaining on their surface. Therefore, reverse osmosis devices used in various fields ultimately require cleaning once put into use, although the cleaning cycle varies. However, online cleaning, as a means of cleaning, maintenance, shock sterilization, and regular protection of reverse osmosis systems, is powerless when faced with severe pollution of reverse osmosis membrane elements. In this case, offline cleaning of the reverse osmosis membrane elements is required.

11-30

How to deal with reverse osmosis membrane blockage

In reverse osmosis desalination systems, the selective permeability of the membrane allows water molecules to continuously pass through the membrane from the high-pressure side, while solute molecules remain in the original solution. This creates a concentration difference between the feed solution on the membrane surface and the inlet feed solution. In severe cases, a high concentration gradient can occur, a phenomenon known as concentration polarization. Concentration polarization increases the osmotic pressure of the feed solution, reduces the effective driving force, and causes a decrease in water permeation rate and desalination rate.

11-19

What are some ways that membranes can be arranged?

Multiple membrane components can be arranged in series, in one, two, or even multiple stages, according to requirements. Each stage can be further divided into one, two, or multiple sections. A single stage refers to a single-pass pressure-driven reverse osmosis separation of the feed liquid; a two-stage process refers to a two-pass pressure-driven reverse osmosis separation, and so on. Within the same stage, identical membrane components are arranged into a single section.

11-15

Principle and operation method of industrial EDI ultrapure water equipment

Ultrapure water equipment adopts advanced reverse osmosis membrane water treatment technology and mature ion exchange water treatment technology, which is an irreplaceable means in the current high-purity water production process. Ultrapure water production equipment has high water quality, can produce water continuously, does not produce wastewater, and saves labor costs, making it popular with industrial enterprises.

11-04

What is oxidation-reduction potential (ORP)?

1. Concept of ORP ORP stands for oxidation-reduction potential. It is the difference between the oxidation-reduction potential of an indicator electrode in a liquid and the oxidation-reduction potential of a reference electrode. It provides a comprehensive indicator of the oxidation-reduction state of the entire system.

11-01

Summary of 31 pure water process problems

What pre-treatment equipment do you know? Answer: Pre-treatment equipment includes: mechanical filter, high-efficiency fiber filter, activated carbon filter, precision filter, ultrafiltration, microfiltration, sodium ion softener, iron and manganese removal filter, chemical dosing device, raw water tank, aeration tank.

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Shijiazhuang Tianwang Environmental Protection Technology Co., Ltd.

Shijiazhuang Tianwang Environmental Protection Technology Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing and sales of water treatment equipment.

Contact Information

Production address: No. 9, Fengchan Road, Economic and Technological Development Zone, Shijiazhuang City

Office Address: 25th Floor, Block C, No. 310 Changjiang Avenue, Shijiazhuang High-tech Development Zone

Contact Number:
0311-89272359 0311-68039237

Enterprise Email:
twhbkj@163.com

Website: en.sjztwhb.com

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