Category: HDD mud recycling system

GN Solids will attend Trenchless Technology Exhibition in Tianjin

GN solids control will participate in Trenchless Technology Exhibition in Tianjin. The exhibition information is as below:


Exhibition Name: The 29th China International Trenchless Technology Conference and Exhibition (ITTC2026)
Exhibition location：Tianjin National Convention and Exhibition Center
Date: April 22th to 24th, 2026
GN Stand No.：B27
What equipment will be showed at the ITTC 2026 exhibition?
1. HDD mud recycling system: GN HDD Mud Recycling System (Horizontal Directional Drilling Mud Recycling System) is a modular solids control solution designed to recover and reuse drilling fluids (bentonite mud) in trenchless industry. It reduces waste disposal costs, minimizes environmental impact, and protects high-pressure pumps by removing excavated solids .The system typically integrates multi-stage separation and auxiliary components on a single skid mounted mud tank or trailer mounted mud tank. Here is the standard configuration breakdown: the 1st stage: shale shaker to separate coarse solids; the 2nd stage: desander cone to separate the cut point 45~75 microns; 3rd stage: desilter cone to separate cut point 25~45 microns; the 4th stage: decanter centrifuge to remove ultra fine solids; The other equipments including customized design mud tank, mixing hopper, mixing pump, electrical control system, lightings, mud agitators, etc.


2. TBM slurry separation system: GN TBM (Tunnel Boring Machine) Slurry Separation System is a high-capacity solids control solution engineered specifically for Slurry Shield TBM and Microtunneling projects. It is designed to separate excavated soil and sand from bentonite slurry, allowing for continuous recycling of the drilling fluid and efficient management of muck disposal. GN offers standardized skid-mounted or containerized plants based on TBM diameter and excavation rate: GNTBM-260 (260m3/h), GNTBM-360 (360m3/h), GNTBM-500 (500m3/h), GNTBM-800B (800m3/h), GNTBM-1000B (1000m3/h), GNTBM-1500B (1500m3/h) and higher treating capacity TBM slurry separation plant up to 3000m3/h for Large Diameter Road/Rail Tunnels.


3. Drilling fluids decanter centrifuge
For more information about the exhibition, pls visit the website: https://en.cstt.org.cn/index.html.

4 Sets GN Mud Cleaning System for Europe HDD company

Recently 4 sets of GN mud cleaning system are ready for delivery to Europe HDD company, including 3 sets of GNMS-200C HDD mud recycling system with treating capacity 200gpm, 1 set of GNMS-1500 HDD mud recycling system with treating capacity 1500gpm.


GNMS-200C HDD mud recycling system is a 200gpm self contained mud recycling system, the cut point is 25 microns, the total volume is 5m3. It is a 2 phase cleaning mud system, the first phase cleaning is double deck shale shaker bottom screen for coarse solids separation, the second phase cleaning is 4pcs of 4 inch desilter cone with mud cleaner. 2 units of centrifugal pumps in same model as desilter feeding pump and a mud mixing pump.


GNMS-1500C HDD mud recycling system is a customized 1500gpm mud recycling system, the cut point is 25 microns. Except for high configuration mud recycling system, GN solids control also produce compact design mud cleaning unit for trenchless HDD project, Bored pile project and micro TBM project, diamond core drilling, water well drilling project. GNMS-200K mud cleaning unit with 200gpm capacity, GNMS-500K with 500gpm capacity, GNMS-1000K with 1000gpm capacity.


Compared with the compact design mud recycling system and the self contained mud recycling system, the table below breaks down the key differences between the two types of systems:

Feature Compact design mud cleaning unit Self contained mud recycling system
Primary function Focus on cleaning Performs mud cleaning, mixing and storage
System complexity Simpler, often a two stage separation process More complex, typically a 4 stage separation process for finer solids separation
Footprint Smaller, skid mounted design for easy transportation Larger, skid mounted or trailer mounted with bigger tanks for greater fluids volume
Application For smaller jobs, supporting smaller drill rig Suited for middle sized to large projects requiring high volume, fine cleaned mud.

Three sets of GN mud recycling system and 40 units pumps shipped to HDD clients

Recently three sets of GN mud recycling system and 40 units of slurry pumps are shipped to HDD clients.


GN Solids control successfully delivered 3 sets of GNMS-1000 mud treatment systems and 40 units of strong wear resistant slurry pumps to HDD (trenchless) customers, to enhance their overall trenchless construction efficiency.
Each set of mud cleaning system integrates one shale shaker, one mud cleaner, one unit of mud tank, centrifugal pump, and mud agitator, enabling mud cleaning and mixing, as well as efficient mud storage, thus meeting the needs of complex working conditions of trenchless projects.
The 40 sets of submersible slurry pumps feature high chromium alloy pump casings and impellers, offering strong wear resistance and a maintenance free design. They are specifically designed for slurry transfer in non excavation mud pits, to ensure uninterrupted construction.


GN Solids Control- From separation to transportation, we provide a one stop mud cleaning solution to our customers, helping to reduce engineering costs and enhance engineering reliability.


GNMS-1000K mud cleaning unit technical specifications are as below:
The treating capacity is 240m3/h ( 1000gpm), the separation cut point is 40 microns, the function of the mud system is cleaning, without mixing and storage, if the client need mud mixing function and also storage capacity, one extra storage tank with mud mixing hopper and mud mixing tank can be provided separately, and the client can prepare storage tank locally. One double deck mud cleaner is installed on the fluids catching tank, the bottom layer shaker screen is used as coarse solids shale shaker, the top layer shaker screen works as mud cleaner bottom screen, 2 units of 10 inch desander cone are installed on top of the double deck shale shaker.
If you need a customized HDD mud cleaning solution, pls contact with GN solids control.

3 Package HDD Mud Reycling Unit for Europe Client

Recently three packages of HDD mud recycling unit are ready for delivery to Europe client, including 2 sets of GNMS-400C HDD mud recycling system and 1 set of GNMS-200C HDD mud recycling unit.


There are 2 types mud recycling unit produced by GN, the economic HDD mud recycling system are largely used in HDD mud cleaning and recycling without mud storage and mixing function, an extra storage tank and a mixing unit are needed. The self contained mud recycling system integrated with the function of mud recycling, mud storage and mud mixing, it can meet the large drilling rigs mud recycling requirement. We can produce different treating capacity mud recycling system, such as 200gpm, 400gpm, 600gpm, 1000 gpm and customized treating capacity mud system. They can be used for trenchless HDD project, CBM drilling, geothermal drilling, tunnel boring machine or bored pile project, water well drilling and diamond core drilling.


GNMS-200C HDD mud recycling unit is a 200gpm treating capacity mud recycling system, including double deck mud cleaner with hydrocyclones, feeding pump, mixing pump, mixing hopper, mud agitator and mud gun, the mud tank can be shipped by standard contaianer,
GNMS-400C HDD mud recycling system is a 400gpm capacity mud system, the total storage capacity is 8.5m3, the container shipping dimension is 6000mm x 2220mm x 2158mm. The mud cleaner is a double deck bottom shaker with 8ea of 4 inch desilter cone, with feeding pump and mixing pump.
Except for HDD mud recycling unit, we also produce TBM slurry separation plant, the features of TBM slurry separation plant including:
1. Complete package for Turnkey solution
2. Modular, pre-assembled and small footprint unit for easy and fast installation
3. 5 phase separation system to separate fine solids
If you need a customized mud recycling system solution, pls contact with GN solids control.

2 Sets 1000GPM HDD mud cleaning system for Australia Customer

2 sets of 1000 gpm treating capacity HDD mud cleaning system are ready for delivery to Australia customer for HDD projects.
Each set of 1000gpm treating capacity HDD mud cleaning system consists of the items as below:


One set of 11.5 m length mud tank with walkway, guardrail and stairs., 3 sets of centrifugal pump, 2ea as feeding pump of desander cone and desilter cone, 1 ea centrifugal pump as mixing pump, 1ea mixing hopper, 1 ea of mud agitator.
2 sets of double deck shale shaker installed on the mud tank, one shaker with 2 ea of desander cone and another shaker with 10 ea of 5 inch desilter cone, the mud cleaner treating capacity is 1000gpm, the bottom shaker deck as primary shale shaker to separate the coarse solids, then the mud dropped into the mud tank, the desander feeding pump transfer the mud to desander cone, the separation cut point is 75 microns, the treated mud dropped into the mud tank and the desilter feeding pump transfer the mud to desilter cone, the separation cut point is 25 microns, the clean mud dropped into the mud tank, after mixing with proper chemicals by the mixing hopper, the clean mud can be reused by HDD rig.


The electrical control system and other standard are comply with Australia standard to meet the requirement of our Australia clients, GN Solids Australia will provide professional pre-sales and after sales service.


GN also provide the submersible slurry pump as picking up pump to pick up the mud from waste pit to feed to the double shaker bottom layer shaker deck. GN engineer team can fly to client’s jobsite to provide the first time commissioning and installation service.
If you need a customized HDD mud cleaning system, pls contact with GN Solids control.