News- Yixing Hengye Environmental Protection Technology Co., Ltd.

2026-10-21

Sewerage System Equipment: Bar Screens, Grit Removal and Sludge Dewatering

A municipal sewerage system carries more than domestic wastewater. By the time the flow reaches the treatment headworks, it contains wet wipes, rags, grit, plastic debris, and industrial solids that were never meant to enter the sewer. They block pumping stations, wear out impellers, and reduce do...

2026-10-14

Industrial Waste Water Treatment Equipment Selection Guide for Plants and Contractors

Industrial waste water is a process-driven problem before it is a treatment problem. A textile dye house can run at neutral pH for hours and then hit an alkaline peak when a dye batch is dumped; a chemical plant can switch from a clean rinse line to a solvent-strong waste stream between product ru...

2026-10-07

Definition of a Water Treatment Plant: What Each Equipment Unit Actually Does

A municipal works handling hundreds of thousands of cubic metres a day and a plating shop polishing its own rinse water look nothing alike on site. Both are water treatment plants, and both are assembled from the same short list of machine types: a screen at the inlet, a dosing unit feeding chemic...

2026-09-30

Disinfection in Water Treatment: Chlorine, UV and Ozone Compared for Plants

In a typical industrial discharge permit, the first number to fail is rarely BOD or suspended solids - it is bacteria. Plants that sit comfortably inside their organic limits for most of the year get caught out in summer, when warmer effluent lets fecal coliform populations rebound and a single re...

2026-09-23

BOD in Wastewater: Typical Values, Removal Stages and Equipment Choices

The BOD5 bottle goes into the incubator on Monday morning, and the number that decides whether last Wednesday's discharge passed the permit will not exist until Friday. That five-day lag is why BOD in wastewater deserves attention long before results arrive: every blower, tank and press downstream...

2026-09-16

Total Suspended Solid (TSS) in Wastewater: Limits, Testing and Removal Methods

A failed effluent sample can idle a production line faster than a broken pump, and the parameter that usually trips first is total suspended solids (TSS): the particles larger than about 2 microns that stay suspended in water and get caught on a laboratory filter. Push 1,200 mg/L of tannery solids...

2026-09-09

Activated Sludge Process: Key Operating Parameters, Failure Modes and Equipment

Pull a glass jar of mixed liquor from a healthy aeration basin and the answer is visible in minutes: brown, fluffy flocs that settle into a clear layer within half an hour. That living floc is activated sludge, the biological workhorse behind most industrial and municipal wastewater plants, and it...

2026-09-03

Sludge Dewatering Machine: Why the Full System Matters

A Sludge Dewatering Machine only performs as well as everything feeding into it. Sludge feeding, polymer dosing, mixing, and cake handling shape the final result, often more than the machine's own nominal capacity does. This guide explains why the main machine is rarely the reason dewatering underp...

2026-09-03

How to Choose the Right Dosing Device for Industry

A Dosing Device delivers a controlled quantity of chemical, liquid, or polymer into a process stream, and getting that specification wrong shows up fast: chemical overfeeding, inconsistent treatment, or unplanned downtime. This guide covers how a Dosing Device works, where it earns its keep across ...